Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1 | SkPaint Reference |
| 2 | === |
| 3 | |
| 4 | # <a name="Paint"></a> Paint |
Cary Clark | e4aa371 | 2017-09-15 02:56:12 -0400 | [diff] [blame] | 5 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 6 | ## <a name="Overview"></a> Overview |
| 7 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 8 | ## <a name="Overview_Subtopic"></a> Overview Subtopic |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 9 | |
| 10 | | name | description | |
| 11 | | --- | --- | |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 12 | | <a href="#Class_or_Struct">Class or Struct</a> | embedded struct and class members | |
| 13 | | <a href="#Constant">Constant</a> | enum and enum class, const values | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 14 | | <a href="#Constructor">Constructor</a> | functions that construct <a href="#SkPaint">SkPaint</a> | |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 15 | | <a href="#Member_Function">Member Function</a> | static functions and member methods | |
| 16 | | <a href="#Operator">Operator</a> | operator overloading methods | |
| 17 | | <a href="#Related_Function">Related Function</a> | similar methods grouped together | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 18 | |
Cary Clark | e4aa371 | 2017-09-15 02:56:12 -0400 | [diff] [blame] | 19 | # <a name="SkPaint"></a> Class SkPaint |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 20 | <a href="#Paint">Paint</a> controls options applied when drawing and measuring. <a href="#Paint">Paint</a> collects all |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 21 | options outside of the <a href="SkCanvas_Reference#Clip">Canvas Clip</a> and <a href="SkCanvas_Reference#Matrix">Canvas Matrix</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 22 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 23 | Various options apply to text, strokes and fills, and images. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 24 | |
| 25 | Some options may not be implemented on all platforms; in these cases, setting |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 26 | the option has no effect. Some options are conveniences that duplicate <a href="SkCanvas_Reference#Canvas">Canvas</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 27 | functionality; for instance, text size is identical to matrix scale. |
| 28 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 29 | <a href="#Paint">Paint</a> options are rarely exclusive; each option modifies a stage of the drawing |
| 30 | pipeline and multiple pipeline stages may be affected by a single <a href="#Paint">Paint</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 31 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 32 | <a href="#Paint">Paint</a> collects effects and filters that describe single-pass and multiple-pass |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 33 | algorithms that alter the drawing geometry, color, and transparency. For instance, |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 34 | <a href="#Paint">Paint</a> does not directly implement dashing or blur, but contains the objects that do so. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 35 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 36 | The objects contained by <a href="#Paint">Paint</a> are opaque, and cannot be edited outside of the <a href="#Paint">Paint</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 37 | to affect it. The implementation is free to defer computations associated with the |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 38 | <a href="#Paint">Paint</a>, or ignore them altogether. For instance, some GPU implementations draw all |
| 39 | <a href="SkPath_Reference#Path">Path</a> geometries with Anti-aliasing, regardless of how <a href="#SkPaint_kAntiAlias_Flag">SkPaint::kAntiAlias Flag</a> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 40 | is set in <a href="#Paint">Paint</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 41 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 42 | <a href="#Paint">Paint</a> describes a single color, a single font, a single image quality, and so on. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 43 | Multiple colors are drawn either by using multiple paints or with objects like |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 44 | <a href="undocumented#Shader">Shader</a> attached to <a href="#Paint">Paint</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 45 | |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 46 | ## <a name="Related_Function"></a> Related Function |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 47 | |
| 48 | | name | description | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 49 | | --- | --- | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 50 | | <a href="#Alpha_Methods">Alpha Methods</a> | get and set <a href="undocumented#Alpha">Alpha</a> | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 51 | | Anti-alias | approximating coverage with transparency | |
| 52 | | <a href="#Automatic_Hinting">Automatic Hinting</a> | always adjust glyph paths | |
| 53 | | <a href="#Blend_Mode_Methods">Blend Mode Methods</a> | get and set <a href="undocumented#Blend_Mode">Blend Mode</a> | |
| 54 | | <a href="#Color_Filter_Methods">Color Filter Methods</a> | get and set <a href="undocumented#Color_Filter">Color Filter</a> | |
| 55 | | <a href="#Color_Methods">Color Methods</a> | get and set <a href="undocumented#Color">Color</a> | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 56 | | <a href="#Device_Text">Device Text</a> | increase precision of glyph position | |
| 57 | | <a href="#Dither">Dither</a> | distributing color error | |
| 58 | | <a href="#Draw_Looper_Methods">Draw Looper Methods</a> | get and set <a href="undocumented#Draw_Looper">Draw Looper</a> | |
| 59 | | <a href="#Fake_Bold">Fake Bold</a> | approximate font styles | |
| 60 | | <a href="#Fast_Bounds">Fast Bounds</a> | approximate area required by <a href="#Paint">Paint</a> | |
| 61 | | <a href="#Fill_Path">Fill Path</a> | make <a href="SkPath_Reference#Path">Path</a> from <a href="undocumented#Path_Effect">Path Effect</a>, stroking | |
| 62 | | <a href="#Filter_Quality_Methods">Filter Quality Methods</a> | get and set <a href="undocumented#Filter_Quality">Filter Quality</a> | |
| 63 | | <a href="#SkPaint_Flags">Flags</a> | attributes represented by single bits | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 64 | | <a href="#Font_Embedded_Bitmaps">Font Embedded Bitmaps</a> | custom sized bitmap <a href="undocumented#Glyph">Glyphs</a> | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 65 | | <a href="#Font_Metrics">Font Metrics</a> | common glyph dimensions | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 66 | | <a href="#Full_Hinting_Spacing">Full Hinting Spacing</a> | glyph spacing affected by hinting | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 67 | | <a href="#SkPaint_Hinting">Hinting</a> | glyph outline adjustment | |
| 68 | | <a href="#Image_Filter_Methods">Image Filter Methods</a> | get and set <a href="undocumented#Image_Filter">Image Filter</a> | |
| 69 | | <a href="#Initializers">Initializers</a> | constructors and initialization | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 70 | | <a href="#LCD_Text">LCD Text</a> | text relying on the order of <a href="undocumented#RGB">Color RGB</a> stripes | |
| 71 | | <a href="#Linear_Text">Linear Text</a> | selects text rendering as <a href="undocumented#Glyph">Glyph</a> or <a href="SkPath_Reference#Path">Path</a> | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 72 | | <a href="#Management">Management</a> | paint copying, moving, comparing | |
| 73 | | <a href="#Mask_Filter_Methods">Mask Filter Methods</a> | get and set <a href="undocumented#Mask_Filter">Mask Filter</a> | |
| 74 | | <a href="#Measure_Text">Measure Text</a> | width, height, bounds of text | |
| 75 | | <a href="#Miter_Limit">Miter Limit</a> | maximum length of stroked corners | |
| 76 | | <a href="#Path_Effect_Methods">Path Effect Methods</a> | get and set <a href="undocumented#Path_Effect">Path Effect</a> | |
| 77 | | <a href="#Shader_Methods">Shader Methods</a> | get and set <a href="undocumented#Shader">Shader</a> | |
| 78 | | <a href="#Stroke_Cap">Stroke Cap</a> | decorations at ends of open strokes | |
| 79 | | <a href="#Stroke_Join">Stroke Join</a> | decoration at corners of strokes | |
| 80 | | <a href="#Stroke_Width">Stroke Width</a> | thickness perpendicular to geometry | |
| 81 | | <a href="#SkPaint_Style">Style</a> | geometry filling, stroking | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 82 | | <a href="#Style_Fill">Style Fill</a> | fill and stroke | |
| 83 | | <a href="#Style_Hairline">Style Hairline</a> | lines and curves with minimal width | |
| 84 | | <a href="#Style_Stroke">Style Stroke</a> | lines and curves with width | |
| 85 | | <a href="#Subpixel_Text">Subpixel Text</a> | uses pixel transparency to represent fractional offset | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 86 | | <a href="#Text_Align">Text Align</a> | text placement relative to position | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 87 | | <a href="#Text_Encoding">Text Encoding</a> | text encoded as characters or <a href="undocumented#Glyph">Glyphs</a> | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 88 | | <a href="#Text_Intercepts">Text Intercepts</a> | advanced underline, strike through | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 89 | | <a href="#Text_Path">Text Path</a> | geometry of <a href="undocumented#Glyph">Glyphs</a> | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 90 | | <a href="#Text_Scale_X">Text Scale X</a> | text horizontal scale | |
| 91 | | <a href="#Text_Size">Text Size</a> | overall height in points | |
| 92 | | <a href="#Text_Skew_X">Text Skew X</a> | text horizontal slant | |
| 93 | | <a href="#Typeface_Methods">Typeface Methods</a> | get and set <a href="undocumented#Typeface">Typeface</a> | |
Cary Clark | 78de751 | 2018-02-07 07:27:09 -0500 | [diff] [blame] | 94 | | <a href="#Utility">Utility</a> | rarely called management functions | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 95 | | <a href="#Vertical_Text">Vertical Text</a> | orient text from top to bottom | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 96 | |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 97 | ## <a name="Constant"></a> Constant |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 98 | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 99 | | name | description | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 100 | | --- | --- | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 101 | | <a href="#SkPaint_Align">Align</a> | glyph locations relative to text position | |
| 102 | | <a href="#SkPaint_Cap">Cap</a> | start and end geometry on stroked shapes | |
| 103 | | <a href="#SkPaint_Flags">Flags</a> | values described by bits and masks | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 104 | | <a href="#SkPaint_Hinting">Hinting</a> | level of glyph outline adjustment | |
| 105 | | <a href="#SkPaint_Join">Join</a> | corner geometry on stroked shapes | |
| 106 | | <a href="#SkPaint_Style">Style</a> | stroke, fill, or both | |
| 107 | | <a href="#SkPaint_TextEncoding">TextEncoding</a> | character or glyph encoded size | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 108 | | _anonymous | number of <a href="#SkPaint_Style">Style</a> defines | |
| 109 | | _anonymous_2 | number of <a href="#Text_Align">Text Align</a> values | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 110 | |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 111 | ## <a name="Class_or_Struct"></a> Class or Struct |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 112 | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 113 | | name | description | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 114 | | --- | --- | |
| 115 | | <a href="#SkPaint_FontMetrics">FontMetrics</a> | values computed by <a href="undocumented#Font_Manager">Font Manager</a> using <a href="undocumented#Typeface">Typeface</a> | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 116 | |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 117 | ## <a name="Constructor"></a> Constructor |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 118 | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 119 | | name | description | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 120 | | --- | --- | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 121 | | <a href="#SkPaint_empty_constructor">SkPaint()</a> | constructs with default values | |
| 122 | | <a href="#SkPaint_move_SkPaint">SkPaint(SkPaint&& paint)</a> | moves paint without copying it | |
| 123 | | <a href="#SkPaint_copy_const_SkPaint">SkPaint(const SkPaint& paint)</a> | makes a shallow copy | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 124 | | <a href="#SkPaint_destructor">~SkPaint()</a> | decreases <a href="undocumented#Reference_Count">Reference Count</a> of owned objects | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 125 | |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 126 | ## <a name="Operator"></a> Operator |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 127 | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 128 | | name | description | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 129 | | --- | --- | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 130 | | <a href="#SkPaint_notequal_operator">operator!=(const SkPaint& a, const SkPaint& b)</a> | compares paints for inequality | |
| 131 | | <a href="#SkPaint_move_operator">operator=(SkPaint&& paint)</a> | moves paint without copying it | |
| 132 | | <a href="#SkPaint_copy_operator">operator=(const SkPaint& paint)</a> | makes a shallow copy | |
| 133 | | <a href="#SkPaint_equal_operator">operator==(const SkPaint& a, const SkPaint& b)</a> | compares paints for equality | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 134 | |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 135 | ## <a name="Member_Function"></a> Member Function |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 136 | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 137 | | name | description | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 138 | | --- | --- | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 139 | | <a href="#SkPaint_breakText">breakText</a> | returns text that fits in a width | |
| 140 | | <a href="#SkPaint_canComputeFastBounds">canComputeFastBounds</a> | returns true if settings allow for fast bounds computation | |
| 141 | | <a href="#SkPaint_computeFastBounds">computeFastBounds</a> | returns fill bounds for quick reject tests | |
| 142 | | <a href="#SkPaint_computeFastStrokeBounds">computeFastStrokeBounds</a> | returns stroke bounds for quick reject tests | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 143 | | <a href="#SkPaint_containsText">containsText</a> | returns if all text corresponds to <a href="undocumented#Glyph">Glyphs</a> | |
| 144 | | <a href="#SkPaint_countText">countText</a> | returns number of <a href="undocumented#Glyph">Glyphs</a> in text | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 145 | | <a href="#SkPaint_doComputeFastBounds">doComputeFastBounds</a> | returns bounds for quick reject tests | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 146 | | <a href="#SkPaint_getAlpha">getAlpha</a> | returns <a href="undocumented#Alpha">Color Alpha</a>, color opacity | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 147 | | <a href="#SkPaint_getBlendMode">getBlendMode</a> | returns <a href="undocumented#Blend_Mode">Blend Mode</a>, how colors combine with <a href="undocumented#Device">Device</a> | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 148 | | <a href="#SkPaint_getColor">getColor</a> | returns <a href="undocumented#Alpha">Color Alpha</a> and <a href="undocumented#RGB">Color RGB</a>, one drawing color | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 149 | | <a href="#SkPaint_getColorFilter">getColorFilter</a> | returns <a href="undocumented#Color_Filter">Color Filter</a>, how colors are altered | |
| 150 | | <a href="#SkPaint_getDrawLooper">getDrawLooper</a> | returns <a href="undocumented#Draw_Looper">Draw Looper</a>, multiple layers | |
| 151 | | <a href="#SkPaint_getFillPath">getFillPath</a> | returns fill path equivalent to stroke | |
| 152 | | <a href="#SkPaint_getFilterQuality">getFilterQuality</a> | returns <a href="undocumented#Filter_Quality">Filter Quality</a>, image filtering level | |
| 153 | | <a href="#SkPaint_getFlags">getFlags</a> | returns <a href="#SkPaint_Flags">Flags</a> stored in a bit field | |
| 154 | | <a href="#SkPaint_getFontBounds">getFontBounds</a> | returns union all glyph bounds | |
| 155 | | <a href="#SkPaint_getFontMetrics">getFontMetrics</a> | returns <a href="undocumented#Typeface">Typeface</a> metrics scaled by text size | |
| 156 | | <a href="#SkPaint_getFontSpacing">getFontSpacing</a> | returns recommended spacing between lines | |
| 157 | | <a href="#SkPaint_getHash">getHash</a> | returns a shallow hash for equality checks | |
| 158 | | <a href="#SkPaint_getHinting">getHinting</a> | returns <a href="#SkPaint_Hinting">Hinting</a>, glyph outline adjustment level | |
| 159 | | <a href="#SkPaint_getImageFilter">getImageFilter</a> | returns <a href="undocumented#Image_Filter">Image Filter</a>, alter pixels; blur | |
| 160 | | <a href="#SkPaint_getMaskFilter">getMaskFilter</a> | returns <a href="undocumented#Mask_Filter">Mask Filter</a>, alterations to <a href="undocumented#Mask_Alpha">Mask Alpha</a> | |
| 161 | | <a href="#SkPaint_getPathEffect">getPathEffect</a> | returns <a href="undocumented#Path_Effect">Path Effect</a>, modifications to path geometry; dashing | |
| 162 | | <a href="#SkPaint_getPosTextHIntercepts">getPosTextHIntercepts</a> | returns where lines intersect horizontally positioned text; underlines | |
| 163 | | <a href="#SkPaint_getPosTextIntercepts">getPosTextIntercepts</a> | returns where lines intersect positioned text; underlines | |
| 164 | | <a href="#SkPaint_getPosTextPath">getPosTextPath</a> | returns <a href="SkPath_Reference#Path">Path</a> equivalent to positioned text | |
| 165 | | <a href="#SkPaint_getShader">getShader</a> | returns <a href="undocumented#Shader">Shader</a>, multiple drawing colors; gradients | |
| 166 | | <a href="#SkPaint_getStrokeCap">getStrokeCap</a> | returns <a href="#SkPaint_Cap">Cap</a>, the area drawn at path ends | |
| 167 | | <a href="#SkPaint_getStrokeJoin">getStrokeJoin</a> | returns <a href="#SkPaint_Join">Join</a>, geometry on path corners | |
| 168 | | <a href="#SkPaint_getStrokeMiter">getStrokeMiter</a> | returns <a href="#Miter_Limit">Miter Limit</a>, angles with sharp corners | |
| 169 | | <a href="#SkPaint_getStrokeWidth">getStrokeWidth</a> | returns thickness of the stroke | |
| 170 | | <a href="#SkPaint_getStyle">getStyle</a> | returns <a href="#SkPaint_Style">Style</a>: stroke, fill, or both | |
| 171 | | <a href="#SkPaint_getTextAlign">getTextAlign</a> | returns <a href="#SkPaint_Align">Align</a>: left, center, or right | |
| 172 | | <a href="#SkPaint_getTextBlobIntercepts">getTextBlobIntercepts</a> | returns where lines intersect <a href="undocumented#Text_Blob">Text Blob</a>; underlines | |
| 173 | | <a href="#SkPaint_getTextEncoding">getTextEncoding</a> | returns character or glyph encoded size | |
| 174 | | <a href="#SkPaint_getTextIntercepts">getTextIntercepts</a> | returns where lines intersect text; underlines | |
| 175 | | <a href="#SkPaint_getTextPath">getTextPath</a> | returns <a href="SkPath_Reference#Path">Path</a> equivalent to text | |
| 176 | | <a href="#SkPaint_getTextScaleX">getTextScaleX</a> | returns the text horizontal scale; condensed text | |
| 177 | | <a href="#SkPaint_getTextSize">getTextSize</a> | returns text size in points | |
| 178 | | <a href="#SkPaint_getTextSkewX">getTextSkewX</a> | returns the text horizontal skew; oblique text | |
| 179 | | <a href="#SkPaint_getTextWidths">getTextWidths</a> | returns advance and bounds for each glyph in text | |
| 180 | | <a href="#SkPaint_getTypeface">getTypeface</a> | returns <a href="undocumented#Typeface">Typeface</a>, font description | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 181 | | <a href="#SkPaint_glyphsToUnichars">glyphsToUnichars</a> | converts <a href="undocumented#Glyph">Glyphs</a> into text | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 182 | | <a href="#SkPaint_isAntiAlias">isAntiAlias</a> | returns true if Anti-alias is set | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 183 | | <a href="#SkPaint_isAutohinted">isAutohinted</a> | returns true if <a href="undocumented#Glyph">Glyphs</a> are always hinted | |
| 184 | | <a href="#SkPaint_isDevKernText">isDevKernText</a> | returns true if <a href="#Full_Hinting_Spacing">Full Hinting Spacing</a> is set | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 185 | | <a href="#SkPaint_isDither">isDither</a> | returns true if <a href="#Dither">Dither</a> is set | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 186 | | <a href="#SkPaint_isEmbeddedBitmapText">isEmbeddedBitmapText</a> | returns true if <a href="#Font_Embedded_Bitmaps">Font Embedded Bitmaps</a> is set | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 187 | | <a href="#SkPaint_isFakeBoldText">isFakeBoldText</a> | returns true if <a href="#Fake_Bold">Fake Bold</a> is set | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 188 | | <a href="#SkPaint_isLCDRenderText">isLCDRenderText</a> | returns true if <a href="#LCD_Text">LCD Text</a> is set | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 189 | | <a href="#SkPaint_isLinearText">isLinearText</a> | returns true if text is converted to <a href="SkPath_Reference#Path">Path</a> | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 190 | | <a href="#SkPaint_isSrcOver">isSrcOver</a> | returns true if <a href="undocumented#Blend_Mode">Blend Mode</a> is <a href="undocumented#SkBlendMode_kSrcOver">SkBlendMode::kSrcOver</a> | |
| 191 | | <a href="#SkPaint_isSubpixelText">isSubpixelText</a> | returns true if <a href="#Subpixel_Text">Subpixel Text</a> is set | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 192 | | <a href="#SkPaint_isVerticalText">isVerticalText</a> | returns true if <a href="#Vertical_Text">Vertical Text</a> is set | |
| 193 | | <a href="#SkPaint_measureText">measureText</a> | returns advance width and bounds of text | |
| 194 | | <a href="#SkPaint_nothingToDraw">nothingToDraw</a> | returns true if <a href="#Paint">Paint</a> prevents all drawing | |
| 195 | | <a href="#SkPaint_refColorFilter">refColorFilter</a> | references <a href="undocumented#Color_Filter">Color Filter</a>, how colors are altered | |
| 196 | | <a href="#SkPaint_refDrawLooper">refDrawLooper</a> | references <a href="undocumented#Draw_Looper">Draw Looper</a>, multiple layers | |
| 197 | | <a href="#SkPaint_refImageFilter">refImageFilter</a> | references <a href="undocumented#Image_Filter">Image Filter</a>, alter pixels; blur | |
| 198 | | <a href="#SkPaint_refMaskFilter">refMaskFilter</a> | references <a href="undocumented#Mask_Filter">Mask Filter</a>, alterations to <a href="undocumented#Mask_Alpha">Mask Alpha</a> | |
| 199 | | <a href="#SkPaint_refPathEffect">refPathEffect</a> | references <a href="undocumented#Path_Effect">Path Effect</a>, modifications to path geometry; dashing | |
| 200 | | <a href="#SkPaint_refShader">refShader</a> | references <a href="undocumented#Shader">Shader</a>, multiple drawing colors; gradients | |
| 201 | | <a href="#SkPaint_refTypeface">refTypeface</a> | references <a href="undocumented#Typeface">Typeface</a>, font description | |
| 202 | | <a href="#SkPaint_reset">reset</a> | sets to default values | |
| 203 | | <a href="#SkPaint_setARGB">setARGB</a> | sets color by component | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 204 | | <a href="#SkPaint_setAlpha">setAlpha</a> | sets <a href="undocumented#Alpha">Color Alpha</a>, color opacity | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 205 | | <a href="#SkPaint_setAntiAlias">setAntiAlias</a> | sets or clears Anti-alias | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 206 | | <a href="#SkPaint_setAutohinted">setAutohinted</a> | sets <a href="undocumented#Glyph">Glyphs</a> to always be hinted | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 207 | | <a href="#SkPaint_setBlendMode">setBlendMode</a> | sets <a href="undocumented#Blend_Mode">Blend Mode</a>, how colors combine with destination | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 208 | | <a href="#SkPaint_setColor">setColor</a> | sets <a href="undocumented#Alpha">Color Alpha</a> and <a href="undocumented#RGB">Color RGB</a>, one drawing color | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 209 | | <a href="#SkPaint_setColorFilter">setColorFilter</a> | sets <a href="undocumented#Color_Filter">Color Filter</a>, alters color | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 210 | | <a href="#SkPaint_setDevKernText">setDevKernText</a> | sets or clears <a href="#Full_Hinting_Spacing">Full Hinting Spacing</a> | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 211 | | <a href="#SkPaint_setDither">setDither</a> | sets or clears <a href="#Dither">Dither</a> | |
| 212 | | <a href="#SkPaint_setDrawLooper">setDrawLooper</a> | sets <a href="undocumented#Draw_Looper">Draw Looper</a>, multiple layers | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 213 | | <a href="#SkPaint_setEmbeddedBitmapText">setEmbeddedBitmapText</a> | sets or clears <a href="#Font_Embedded_Bitmaps">Font Embedded Bitmaps</a> | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 214 | | <a href="#SkPaint_setFakeBoldText">setFakeBoldText</a> | sets or clears <a href="#Fake_Bold">Fake Bold</a> | |
| 215 | | <a href="#SkPaint_setFilterQuality">setFilterQuality</a> | sets <a href="undocumented#Filter_Quality">Filter Quality</a>, the image filtering level | |
| 216 | | <a href="#SkPaint_setFlags">setFlags</a> | sets multiple <a href="#SkPaint_Flags">Flags</a> in a bit field | |
| 217 | | <a href="#SkPaint_setHinting">setHinting</a> | sets <a href="#SkPaint_Hinting">Hinting</a>, glyph outline adjustment level | |
| 218 | | <a href="#SkPaint_setImageFilter">setImageFilter</a> | sets <a href="undocumented#Image_Filter">Image Filter</a>, alter pixels; blur | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 219 | | <a href="#SkPaint_setLCDRenderText">setLCDRenderText</a> | sets or clears <a href="#LCD_Text">LCD Text</a> | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 220 | | <a href="#SkPaint_setLinearText">setLinearText</a> | converts to <a href="SkPath_Reference#Path">Path</a> before draw or measure | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 221 | | <a href="#SkPaint_setMaskFilter">setMaskFilter</a> | sets <a href="undocumented#Mask_Filter">Mask Filter</a>, alterations to <a href="undocumented#Mask_Alpha">Mask Alpha</a> | |
| 222 | | <a href="#SkPaint_setPathEffect">setPathEffect</a> | sets <a href="undocumented#Path_Effect">Path Effect</a>, modifications to path geometry; dashing | |
| 223 | | <a href="#SkPaint_setShader">setShader</a> | sets <a href="undocumented#Shader">Shader</a>, multiple drawing colors; gradients | |
| 224 | | <a href="#SkPaint_setStrokeCap">setStrokeCap</a> | sets <a href="#SkPaint_Cap">Cap</a>, the area drawn at path ends | |
| 225 | | <a href="#SkPaint_setStrokeJoin">setStrokeJoin</a> | sets <a href="#SkPaint_Join">Join</a>, geometry on path corners | |
| 226 | | <a href="#SkPaint_setStrokeMiter">setStrokeMiter</a> | sets <a href="#Miter_Limit">Miter Limit</a>, angles with sharp corners | |
| 227 | | <a href="#SkPaint_setStrokeWidth">setStrokeWidth</a> | sets thickness of the stroke | |
| 228 | | <a href="#SkPaint_setStyle">setStyle</a> | sets <a href="#SkPaint_Style">Style</a>: stroke, fill, or both | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 229 | | <a href="#SkPaint_setSubpixelText">setSubpixelText</a> | sets or clears <a href="#Subpixel_Text">Subpixel Text</a> | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 230 | | <a href="#SkPaint_setTextAlign">setTextAlign</a> | sets <a href="#SkPaint_Align">Align</a>: left, center, or right | |
| 231 | | <a href="#SkPaint_setTextEncoding">setTextEncoding</a> | sets character or glyph encoded size | |
| 232 | | <a href="#SkPaint_setTextScaleX">setTextScaleX</a> | sets the text horizontal scale; condensed text | |
| 233 | | <a href="#SkPaint_setTextSize">setTextSize</a> | sets text size in points | |
| 234 | | <a href="#SkPaint_setTextSkewX">setTextSkewX</a> | sets the text horizontal skew; oblique text | |
| 235 | | <a href="#SkPaint_setTypeface">setTypeface</a> | sets <a href="undocumented#Typeface">Typeface</a>, font description | |
| 236 | | <a href="#SkPaint_setVerticalText">setVerticalText</a> | sets or clears <a href="#Vertical_Text">Vertical Text</a> | |
| 237 | | <a href="#SkPaint_textToGlyphs">textToGlyphs</a> | converts text into glyph indices | |
| 238 | | <a href="#SkPaint_toString">toString</a> | converts <a href="#Paint">Paint</a> to machine readable form | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 239 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 240 | ## <a name="Initializers"></a> Initializers |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 241 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 242 | <a name="SkPaint_empty_constructor"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 243 | ## SkPaint |
| 244 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 245 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 246 | SkPaint() |
| 247 | </pre> |
| 248 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 249 | Constructs <a href="#Paint">Paint</a> with default values. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 250 | |
| 251 | | attribute | default value | |
| 252 | | --- | --- | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 253 | | Anti-alias | false | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 254 | | <a href="undocumented#Blend_Mode">Blend Mode</a> | <a href="undocumented#SkBlendMode_kSrcOver">SkBlendMode::kSrcOver</a> | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 255 | | <a href="undocumented#Color">Color</a> | <a href="undocumented#SK_ColorBLACK">SK ColorBLACK</a> | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 256 | | <a href="undocumented#Alpha">Color Alpha</a> | 255 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 257 | | <a href="undocumented#Color_Filter">Color Filter</a> | nullptr | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 258 | | <a href="#Dither">Dither</a> | false | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 259 | | <a href="undocumented#Draw_Looper">Draw Looper</a> | nullptr | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 260 | | <a href="#Fake_Bold">Fake Bold</a> | false | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 261 | | <a href="undocumented#Filter_Quality">Filter Quality</a> | <a href="undocumented#kNone_SkFilterQuality">kNone_SkFilterQuality</a> | |
| 262 | | <a href="#Font_Embedded_Bitmaps">Font Embedded Bitmaps</a> | false | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 263 | | <a href="#Automatic_Hinting">Automatic Hinting</a> | false | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 264 | | <a href="#Full_Hinting_Spacing">Full Hinting Spacing</a> | false | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 265 | | <a href="#SkPaint_Hinting">Hinting</a> | <a href="#SkPaint_kNormal_Hinting">kNormal Hinting</a> | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 266 | | <a href="undocumented#Image_Filter">Image Filter</a> | nullptr | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 267 | | <a href="#LCD_Text">LCD Text</a> | false | |
| 268 | | <a href="#Linear_Text">Linear Text</a> | false | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 269 | | <a href="#Miter_Limit">Miter Limit</a> | 4 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 270 | | <a href="undocumented#Mask_Filter">Mask Filter</a> | nullptr | |
| 271 | | <a href="undocumented#Path_Effect">Path Effect</a> | nullptr | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 272 | | <a href="undocumented#Shader">Shader</a> | nullptr | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 273 | | <a href="#SkPaint_Style">Style</a> | <a href="#SkPaint_kFill_Style">kFill Style</a> | |
| 274 | | <a href="#Text_Align">Text Align</a> | <a href="#SkPaint_kLeft_Align">kLeft Align</a> | |
| 275 | | <a href="#Text_Encoding">Text Encoding</a> | <a href="#SkPaint_kUTF8_TextEncoding">kUTF8 TextEncoding</a> | |
| 276 | | <a href="#Text_Scale_X">Text Scale X</a> | 1 | |
| 277 | | <a href="#Text_Size">Text Size</a> | 12 | |
| 278 | | <a href="#Text_Skew_X">Text Skew X</a> | 0 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 279 | | <a href="undocumented#Typeface">Typeface</a> | nullptr | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 280 | | <a href="#Stroke_Cap">Stroke Cap</a> | <a href="#SkPaint_kButt_Cap">kButt Cap</a> | |
| 281 | | <a href="#Stroke_Join">Stroke Join</a> | <a href="#SkPaint_kMiter_Join">kMiter Join</a> | |
| 282 | | <a href="#Stroke_Width">Stroke Width</a> | 0 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 283 | | <a href="#Subpixel_Text">Subpixel Text</a> | false | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 284 | | <a href="#Vertical_Text">Vertical Text</a> | false | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 285 | |
| 286 | The flags, text size, hinting, and miter limit may be overridden at compile time by defining |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 287 | paint default values. The overrides may be included in "SkUserConfig.h" or predefined by the |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 288 | build system. |
| 289 | |
| 290 | ### Return Value |
| 291 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 292 | default initialized <a href="#Paint">Paint</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 293 | |
| 294 | ### Example |
| 295 | |
| 296 | <div><fiddle-embed name="c4b2186d85c142a481298f7144295ffd"></fiddle-embed></div> |
| 297 | |
| 298 | --- |
| 299 | |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 300 | <a name="SkPaint_copy_const_SkPaint"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 301 | ## SkPaint |
| 302 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 303 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 304 | SkPaint(const SkPaint& paint) |
| 305 | </pre> |
| 306 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 307 | Makes a shallow copy of <a href="#Paint">Paint</a>. <a href="undocumented#Typeface">Typeface</a>, <a href="undocumented#Path_Effect">Path Effect</a>, <a href="undocumented#Shader">Shader</a>, |
Update Docs | 949cfd4 | 2018-01-22 05:50:26 +0000 | [diff] [blame] | 308 | <a href="undocumented#Mask_Filter">Mask Filter</a>, <a href="undocumented#Color_Filter">Color Filter</a>, <a href="undocumented#Draw_Looper">Draw Looper</a>, and <a href="undocumented#Image_Filter">Image Filter</a> are shared |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 309 | between the original <a href="#SkPaint_copy_const_SkPaint_paint">paint</a> and the copy. Objects containing <a href="undocumented#Reference_Count">Reference Count</a> increment |
Cary Clark | bad5ad7 | 2017-08-03 17:14:08 -0400 | [diff] [blame] | 310 | their references by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 311 | |
Update Docs | 949cfd4 | 2018-01-22 05:50:26 +0000 | [diff] [blame] | 312 | The referenced objects <a href="undocumented#Path_Effect">Path Effect</a>, <a href="undocumented#Shader">Shader</a>, <a href="undocumented#Mask_Filter">Mask Filter</a>, <a href="undocumented#Color_Filter">Color Filter</a>, |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 313 | <a href="undocumented#Draw_Looper">Draw Looper</a>, and <a href="undocumented#Image_Filter">Image Filter</a> cannot be modified after they are created. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 314 | This prevents objects with <a href="undocumented#Reference_Count">Reference Count</a> from being modified once <a href="#Paint">Paint</a> refers to them. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 315 | |
| 316 | ### Parameters |
| 317 | |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 318 | <table> <tr> <td><a name="SkPaint_copy_const_SkPaint_paint"> <code><strong>paint </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 319 | original to copy</td> |
| 320 | </tr> |
| 321 | </table> |
| 322 | |
| 323 | ### Return Value |
| 324 | |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 325 | shallow copy of <a href="#SkPaint_copy_const_SkPaint_paint">paint</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 326 | |
| 327 | ### Example |
| 328 | |
| 329 | <div><fiddle-embed name="b99971ad0ef243d617925289d963b62d"> |
| 330 | |
| 331 | #### Example Output |
| 332 | |
| 333 | ~~~~ |
| 334 | SK_ColorRED == paint1.getColor() |
| 335 | SK_ColorBLUE == paint2.getColor() |
| 336 | ~~~~ |
| 337 | |
| 338 | </fiddle-embed></div> |
| 339 | |
| 340 | --- |
| 341 | |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 342 | <a name="SkPaint_move_SkPaint"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 343 | ## SkPaint |
| 344 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 345 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 346 | SkPaint(SkPaint&& paint) |
| 347 | </pre> |
| 348 | |
Cary Clark | d0530ba | 2017-09-14 11:25:39 -0400 | [diff] [blame] | 349 | Implements a move constructor to avoid increasing the reference counts |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 350 | of objects referenced by the <a href="#SkPaint_move_SkPaint_paint">paint</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 351 | |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 352 | After the call, <a href="#SkPaint_move_SkPaint_paint">paint</a> is undefined, and can be safely destructed. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 353 | |
| 354 | ### Parameters |
| 355 | |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 356 | <table> <tr> <td><a name="SkPaint_move_SkPaint_paint"> <code><strong>paint </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 357 | original to move</td> |
| 358 | </tr> |
| 359 | </table> |
| 360 | |
| 361 | ### Return Value |
| 362 | |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 363 | content of <a href="#SkPaint_move_SkPaint_paint">paint</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 364 | |
| 365 | ### Example |
| 366 | |
| 367 | <div><fiddle-embed name="8ed1488a503cd5282b86a51614aa90b1"> |
| 368 | |
| 369 | #### Example Output |
| 370 | |
| 371 | ~~~~ |
| 372 | path effect unique: true |
| 373 | ~~~~ |
| 374 | |
| 375 | </fiddle-embed></div> |
| 376 | |
| 377 | --- |
| 378 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 379 | <a name="SkPaint_reset"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 380 | ## reset |
| 381 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 382 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 383 | void reset() |
| 384 | </pre> |
| 385 | |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 386 | Sets all <a href="#Paint">Paint</a> contents to their initial values. This is equivalent to replacing |
| 387 | <a href="#Paint">Paint</a> with the result of <a href="#SkPaint_empty_constructor">SkPaint()</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 388 | |
| 389 | ### Example |
| 390 | |
| 391 | <div><fiddle-embed name="ef269937ade7e7353635121d9a64f9f7"> |
| 392 | |
| 393 | #### Example Output |
| 394 | |
| 395 | ~~~~ |
| 396 | paint1 == paint2 |
| 397 | ~~~~ |
| 398 | |
| 399 | </fiddle-embed></div> |
| 400 | |
| 401 | --- |
| 402 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 403 | <a name="SkPaint_destructor"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 404 | ## ~SkPaint |
| 405 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 406 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 407 | ~SkPaint() |
| 408 | </pre> |
| 409 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 410 | Decreases <a href="#Paint">Paint</a> <a href="undocumented#Reference_Count">Reference Count</a> of owned objects: <a href="undocumented#Typeface">Typeface</a>, <a href="undocumented#Path_Effect">Path Effect</a>, <a href="undocumented#Shader">Shader</a>, |
Update Docs | 949cfd4 | 2018-01-22 05:50:26 +0000 | [diff] [blame] | 411 | <a href="undocumented#Mask_Filter">Mask Filter</a>, <a href="undocumented#Color_Filter">Color Filter</a>, <a href="undocumented#Draw_Looper">Draw Looper</a>, and <a href="undocumented#Image_Filter">Image Filter</a>. If the |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 412 | objects containing <a href="undocumented#Reference_Count">Reference Count</a> go to zero, they are deleted. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 413 | |
| 414 | --- |
| 415 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 416 | ## <a name="Management"></a> Management |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 417 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 418 | <a name="SkPaint_copy_operator"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 419 | ## operator= |
| 420 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 421 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 422 | SkPaint& operator=(const SkPaint& paint) |
| 423 | </pre> |
| 424 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 425 | Makes a shallow copy of <a href="#Paint">Paint</a>. <a href="undocumented#Typeface">Typeface</a>, <a href="undocumented#Path_Effect">Path Effect</a>, <a href="undocumented#Shader">Shader</a>, |
Update Docs | 949cfd4 | 2018-01-22 05:50:26 +0000 | [diff] [blame] | 426 | <a href="undocumented#Mask_Filter">Mask Filter</a>, <a href="undocumented#Color_Filter">Color Filter</a>, <a href="undocumented#Draw_Looper">Draw Looper</a>, and <a href="undocumented#Image_Filter">Image Filter</a> are shared |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 427 | between the original <a href="#SkPaint_copy_operator_paint">paint</a> and the copy. Objects containing <a href="undocumented#Reference_Count">Reference Count</a> in the |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 428 | prior destination are decreased by one, and the referenced objects are deleted if the |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 429 | resulting count is zero. Objects containing <a href="undocumented#Reference_Count">Reference Count</a> in the parameter <a href="#SkPaint_copy_operator_paint">paint</a> |
| 430 | are increased by one. <a href="#SkPaint_copy_operator_paint">paint</a> is unmodified. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 431 | |
| 432 | ### Parameters |
| 433 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 434 | <table> <tr> <td><a name="SkPaint_copy_operator_paint"> <code><strong>paint </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 435 | original to copy</td> |
| 436 | </tr> |
| 437 | </table> |
| 438 | |
| 439 | ### Return Value |
| 440 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 441 | content of <a href="#SkPaint_copy_operator_paint">paint</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 442 | |
| 443 | ### Example |
| 444 | |
| 445 | <div><fiddle-embed name="b476a9088f80dece176ed577807d3992"> |
| 446 | |
| 447 | #### Example Output |
| 448 | |
| 449 | ~~~~ |
| 450 | SK_ColorRED == paint1.getColor() |
| 451 | SK_ColorRED == paint2.getColor() |
| 452 | ~~~~ |
| 453 | |
| 454 | </fiddle-embed></div> |
| 455 | |
| 456 | --- |
| 457 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 458 | <a name="SkPaint_move_operator"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 459 | ## operator= |
| 460 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 461 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 462 | SkPaint& operator=(SkPaint&& paint) |
| 463 | </pre> |
| 464 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 465 | Moves the <a href="#SkPaint_move_operator_paint">paint</a> to avoid increasing the reference counts |
| 466 | of objects referenced by the <a href="#SkPaint_move_operator_paint">paint</a> parameter. Objects containing <a href="undocumented#Reference_Count">Reference Count</a> in the |
Cary Clark | bad5ad7 | 2017-08-03 17:14:08 -0400 | [diff] [blame] | 467 | prior destination are decreased by one; those objects are deleted if the resulting count |
| 468 | is zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 469 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 470 | After the call, <a href="#SkPaint_move_operator_paint">paint</a> is undefined, and can be safely destructed. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 471 | |
| 472 | ### Parameters |
| 473 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 474 | <table> <tr> <td><a name="SkPaint_move_operator_paint"> <code><strong>paint </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 475 | original to move</td> |
| 476 | </tr> |
| 477 | </table> |
| 478 | |
| 479 | ### Return Value |
| 480 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 481 | content of <a href="#SkPaint_move_operator_paint">paint</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 482 | |
| 483 | ### Example |
| 484 | |
| 485 | <div><fiddle-embed name="9fb7459b097d713f5f1fe5675afe14f5"> |
| 486 | |
| 487 | #### Example Output |
| 488 | |
| 489 | ~~~~ |
| 490 | SK_ColorRED == paint2.getColor() |
| 491 | ~~~~ |
| 492 | |
| 493 | </fiddle-embed></div> |
| 494 | |
| 495 | --- |
| 496 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 497 | <a name="SkPaint_equal_operator"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 498 | ## operator== |
| 499 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 500 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 501 | bool operator==(const SkPaint& a, const SkPaint& b) |
| 502 | </pre> |
| 503 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 504 | Compares <a href="#SkPaint_equal_operator_a">a</a> and <a href="#SkPaint_equal_operator_b">b</a>, and returns true if <a href="#SkPaint_equal_operator_a">a</a> and <a href="#SkPaint_equal_operator_b">b</a> are equivalent. May return false |
Update Docs | 949cfd4 | 2018-01-22 05:50:26 +0000 | [diff] [blame] | 505 | if <a href="undocumented#Typeface">Typeface</a>, <a href="undocumented#Path_Effect">Path Effect</a>, <a href="undocumented#Shader">Shader</a>, <a href="undocumented#Mask_Filter">Mask Filter</a>, <a href="undocumented#Color_Filter">Color Filter</a>, |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 506 | <a href="undocumented#Draw_Looper">Draw Looper</a>, or <a href="undocumented#Image_Filter">Image Filter</a> have identical contents but different pointers. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 507 | |
| 508 | ### Parameters |
| 509 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 510 | <table> <tr> <td><a name="SkPaint_equal_operator_a"> <code><strong>a </strong></code> </a></td> <td> |
| 511 | <a href="#Paint">Paint</a> to compare</td> |
| 512 | </tr> <tr> <td><a name="SkPaint_equal_operator_b"> <code><strong>b </strong></code> </a></td> <td> |
| 513 | <a href="#Paint">Paint</a> to compare</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 514 | </tr> |
| 515 | </table> |
| 516 | |
| 517 | ### Return Value |
| 518 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 519 | true if <a href="#Paint">Paint</a> pair are equivalent |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 520 | |
| 521 | ### Example |
| 522 | |
| 523 | <div><fiddle-embed name="7481a948e34672720337a631830586dd"> |
| 524 | |
| 525 | #### Example Output |
| 526 | |
| 527 | ~~~~ |
| 528 | paint1 == paint2 |
| 529 | paint1 != paint2 |
| 530 | ~~~~ |
| 531 | |
| 532 | </fiddle-embed></div> |
| 533 | |
| 534 | --- |
| 535 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 536 | <a name="SkPaint_notequal_operator"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 537 | ## operator!= |
| 538 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 539 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 540 | bool operator!=(const SkPaint& a, const SkPaint& b) |
| 541 | </pre> |
| 542 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 543 | Compares <a href="#SkPaint_notequal_operator_a">a</a> and <a href="#SkPaint_notequal_operator_b">b</a>, and returns true if <a href="#SkPaint_notequal_operator_a">a</a> and <a href="#SkPaint_notequal_operator_b">b</a> are not equivalent. May return true |
Update Docs | 949cfd4 | 2018-01-22 05:50:26 +0000 | [diff] [blame] | 544 | if <a href="undocumented#Typeface">Typeface</a>, <a href="undocumented#Path_Effect">Path Effect</a>, <a href="undocumented#Shader">Shader</a>, <a href="undocumented#Mask_Filter">Mask Filter</a>, <a href="undocumented#Color_Filter">Color Filter</a>, |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 545 | <a href="undocumented#Draw_Looper">Draw Looper</a>, or <a href="undocumented#Image_Filter">Image Filter</a> have identical contents but different pointers. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 546 | |
| 547 | ### Parameters |
| 548 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 549 | <table> <tr> <td><a name="SkPaint_notequal_operator_a"> <code><strong>a </strong></code> </a></td> <td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 550 | <a href="#Paint">Paint</a> to compare</td> |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 551 | </tr> <tr> <td><a name="SkPaint_notequal_operator_b"> <code><strong>b </strong></code> </a></td> <td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 552 | <a href="#Paint">Paint</a> to compare</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 553 | </tr> |
| 554 | </table> |
| 555 | |
| 556 | ### Return Value |
| 557 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 558 | true if <a href="#Paint">Paint</a> pair are not equivalent |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 559 | |
| 560 | ### Example |
| 561 | |
| 562 | <div><fiddle-embed name="b6c8484b1187f555b435ad5369833be4"> |
| 563 | |
| 564 | #### Example Output |
| 565 | |
| 566 | ~~~~ |
| 567 | paint1 == paint2 |
| 568 | paint1 == paint2 |
| 569 | ~~~~ |
| 570 | |
| 571 | </fiddle-embed></div> |
| 572 | |
| 573 | --- |
| 574 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 575 | <a name="SkPaint_getHash"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 576 | ## getHash |
| 577 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 578 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 579 | uint32_t getHash() const |
| 580 | </pre> |
| 581 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 582 | Returns a hash generated from <a href="#Paint">Paint</a> values and pointers. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 583 | Identical hashes guarantee that the paints are |
| 584 | equivalent, but differing hashes do not guarantee that the paints have differing |
| 585 | contents. |
| 586 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 587 | If <a href="#SkPaint_equal_operator">operator==(const SkPaint& a, const SkPaint& b)</a> returns true for two paints, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 588 | their hashes are also equal. |
| 589 | |
| 590 | The hash returned is platform and implementation specific. |
| 591 | |
| 592 | ### Return Value |
| 593 | |
| 594 | a shallow hash |
| 595 | |
| 596 | ### Example |
| 597 | |
| 598 | <div><fiddle-embed name="7f7e1b701361912b344f90ae6b530393"> |
| 599 | |
| 600 | #### Example Output |
| 601 | |
| 602 | ~~~~ |
| 603 | paint1 == paint2 |
| 604 | paint1.getHash() == paint2.getHash() |
| 605 | ~~~~ |
| 606 | |
| 607 | </fiddle-embed></div> |
| 608 | |
| 609 | --- |
| 610 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 611 | ## <a name="Hinting"></a> Hinting |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 612 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 613 | ## <a name="SkPaint_Hinting"></a> Enum SkPaint::Hinting |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 614 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 615 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 616 | enum <a href="#Hinting">Hinting</a> { |
| 617 | <a href="#SkPaint_kNo_Hinting">kNo Hinting</a> = 0, |
| 618 | <a href="#SkPaint_kSlight_Hinting">kSlight Hinting</a> = 1, |
| 619 | <a href="#SkPaint_kNormal_Hinting">kNormal Hinting</a> = 2, |
| 620 | <a href="#SkPaint_kFull_Hinting">kFull Hinting</a> = 3, |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 621 | }; |
| 622 | </pre> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 623 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 624 | <a href="#Hinting">Hinting</a> adjusts the glyph outlines so that the shape provides a uniform |
| 625 | look at a given point size on font engines that support it. <a href="#Hinting">Hinting</a> may have a |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 626 | muted effect or no effect at all depending on the platform. |
| 627 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 628 | The four levels roughly control corresponding features on platforms that use FreeType |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 629 | as the <a href="undocumented#Engine">Font Engine</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 630 | |
| 631 | ### Constants |
| 632 | |
| 633 | <table> |
| 634 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 635 | <td><a name="SkPaint_kNo_Hinting"> <code><strong>SkPaint::kNo_Hinting </strong></code> </a></td><td>0</td><td>Leaves glyph outlines unchanged from their native representation. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 636 | With FreeType, this is equivalent to the FT_LOAD_NO_HINTING |
| 637 | bit-field constant supplied to FT_Load_Glyph, which indicates that the vector |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 638 | outline being loaded should not be fitted to the pixel grid but simply scaled |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 639 | to 26.6 fractional pixels. |
| 640 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 641 | </tr> |
| 642 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 643 | <td><a name="SkPaint_kSlight_Hinting"> <code><strong>SkPaint::kSlight_Hinting </strong></code> </a></td><td>1</td><td>Modifies glyph outlines minimally to improve constrast. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 644 | With FreeType, this is equivalent in spirit to the |
| 645 | FT_LOAD_TARGET_LIGHT value supplied to FT_Load_Glyph. It chooses a |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 646 | lighter hinting algorithm for non-monochrome modes. |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 647 | Generated <a href="undocumented#Glyph">Glyphs</a> may be fuzzy but better resemble their original shape. |
| 648 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 649 | </tr> |
| 650 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 651 | <td><a name="SkPaint_kNormal_Hinting"> <code><strong>SkPaint::kNormal_Hinting </strong></code> </a></td><td>2</td><td>Modifies glyph outlines to improve constrast. This is the default. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 652 | With FreeType, this supplies FT_LOAD_TARGET_NORMAL to FT_Load_Glyph, |
| 653 | choosing the default hinting algorithm, which is optimized for standard |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 654 | gray-level rendering. |
| 655 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 656 | </tr> |
| 657 | <tr> |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 658 | <td><a name="SkPaint_kFull_Hinting"> <code><strong>SkPaint::kFull_Hinting </strong></code> </a></td><td>3</td><td>Modifies glyph outlines for maxiumum constrast. With FreeType, this selects |
| 659 | FT_LOAD_TARGET_LCD or FT_LOAD_TARGET_LCD_V if <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a> is set. |
| 660 | FT_LOAD_TARGET_LCD is a variant of FT_LOAD_TARGET_NORMAL optimized for |
| 661 | horizontally decimated LCD displays; FT_LOAD_TARGET_LCD_V is a |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 662 | variant of FT_LOAD_TARGET_NORMAL optimized for vertically decimated LCD displays. |
| 663 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 664 | </tr> |
| 665 | </table> |
| 666 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 667 | On Windows with DirectWrite, <a href="#Hinting">Hinting</a> has no effect. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 668 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 669 | <a href="#Hinting">Hinting</a> defaults to <a href="#SkPaint_kNormal_Hinting">kNormal Hinting</a>. |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 670 | Set <a href="undocumented#SkPaintDefaults_Hinting">SkPaintDefaults Hinting</a> at compile time to change the default setting. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 671 | |
| 672 | |
| 673 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 674 | <a name="SkPaint_getHinting"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 675 | ## getHinting |
| 676 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 677 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 678 | Hinting getHinting() const |
| 679 | </pre> |
| 680 | |
| 681 | Returns level of glyph outline adjustment. |
| 682 | |
| 683 | ### Return Value |
| 684 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 685 | one of: <a href="#SkPaint_kNo_Hinting">kNo Hinting</a>, <a href="#SkPaint_kSlight_Hinting">kSlight Hinting</a>, <a href="#SkPaint_kNormal_Hinting">kNormal Hinting</a>, <a href="#SkPaint_kFull_Hinting">kFull Hinting</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 686 | |
| 687 | ### Example |
| 688 | |
| 689 | <div><fiddle-embed name="329e2e5a5919ac431e1c58878a5b99e0"> |
| 690 | |
| 691 | #### Example Output |
| 692 | |
| 693 | ~~~~ |
| 694 | SkPaint::kNormal_Hinting == paint.getHinting() |
| 695 | ~~~~ |
| 696 | |
| 697 | </fiddle-embed></div> |
| 698 | |
| 699 | --- |
| 700 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 701 | <a name="SkPaint_setHinting"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 702 | ## setHinting |
| 703 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 704 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 705 | void setHinting(Hinting hintingLevel) |
| 706 | </pre> |
| 707 | |
| 708 | Sets level of glyph outline adjustment. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 709 | Does not check for valid values of <a href="#SkPaint_setHinting_hintingLevel">hintingLevel</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 710 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 711 | | <a href="#Hinting">Hinting</a> | value | effect on generated glyph outlines | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 712 | | --- | --- | --- | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 713 | | <a href="#SkPaint_kNo_Hinting">kNo Hinting</a> | 0 | leaves glyph outlines unchanged from their native representation | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 714 | | <a href="#SkPaint_kSlight_Hinting">kSlight Hinting</a> | 1 | modifies glyph outlines minimally to improve contrast | |
| 715 | | <a href="#SkPaint_kNormal_Hinting">kNormal Hinting</a> | 2 | modifies glyph outlines to improve contrast | |
| 716 | | <a href="#SkPaint_kFull_Hinting">kFull Hinting</a> | 3 | modifies glyph outlines for maximum contrast | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 717 | |
| 718 | ### Parameters |
| 719 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 720 | <table> <tr> <td><a name="SkPaint_setHinting_hintingLevel"> <code><strong>hintingLevel </strong></code> </a></td> <td> |
| 721 | one of: <a href="#SkPaint_kNo_Hinting">kNo Hinting</a>, <a href="#SkPaint_kSlight_Hinting">kSlight Hinting</a>, <a href="#SkPaint_kNormal_Hinting">kNormal Hinting</a>, <a href="#SkPaint_kFull_Hinting">kFull Hinting</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 722 | </tr> |
| 723 | </table> |
| 724 | |
| 725 | ### Example |
| 726 | |
| 727 | <div><fiddle-embed name="78153fbd3f1000cb33b97bbe831ed34e"> |
| 728 | |
| 729 | #### Example Output |
| 730 | |
| 731 | ~~~~ |
| 732 | paint1 == paint2 |
| 733 | ~~~~ |
| 734 | |
| 735 | </fiddle-embed></div> |
| 736 | |
| 737 | --- |
| 738 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 739 | ## <a name="Flags"></a> Flags |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 740 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 741 | ## <a name="SkPaint_Flags"></a> Enum SkPaint::Flags |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 742 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 743 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 744 | enum <a href="#Flags">Flags</a> { |
| 745 | <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a> = 0x01, |
| 746 | <a href="#SkPaint_kDither_Flag">kDither Flag</a> = 0x04, |
| 747 | <a href="#SkPaint_kFakeBoldText_Flag">kFakeBoldText Flag</a> = 0x20, |
| 748 | <a href="#SkPaint_kLinearText_Flag">kLinearText Flag</a> = 0x40, |
| 749 | <a href="#SkPaint_kSubpixelText_Flag">kSubpixelText Flag</a> = 0x80, |
| 750 | <a href="#SkPaint_kDevKernText_Flag">kDevKernText Flag</a> = 0x100, |
| 751 | <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a> = 0x200, |
| 752 | <a href="#SkPaint_kEmbeddedBitmapText_Flag">kEmbeddedBitmapText Flag</a> = 0x400, |
| 753 | <a href="#SkPaint_kAutoHinting_Flag">kAutoHinting Flag</a> = 0x800, |
| 754 | <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> = 0x1000, |
| 755 | <a href="#SkPaint_kGenA8FromLCD_Flag">kGenA8FromLCD Flag</a> = 0x2000, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 756 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 757 | <a href="#SkPaint_kAllFlags">kAllFlags</a> = 0xFFFF, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 758 | }; |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 759 | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 760 | </pre> |
| 761 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 762 | The bit values stored in <a href="#Flags">Flags</a>. |
| 763 | The default value for <a href="#Flags">Flags</a>, normally zero, can be changed at compile time |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 764 | with a custom definition of <a href="undocumented#SkPaintDefaults_Flags">SkPaintDefaults Flags</a>. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 765 | All flags can be read and written explicitly; <a href="#Flags">Flags</a> allows manipulating |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 766 | multiple settings at once. |
| 767 | |
| 768 | ### Constants |
| 769 | |
| 770 | <table> |
| 771 | <tr> |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 772 | <td><a name="SkPaint_kAntiAlias_Flag"> <code><strong>SkPaint::kAntiAlias_Flag </strong></code> </a></td><td>0x0001 </td><td>mask for setting Anti-alias</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 773 | </tr> |
| 774 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 775 | <td><a name="SkPaint_kDither_Flag"> <code><strong>SkPaint::kDither_Flag </strong></code> </a></td><td>0x0004</td><td>mask for setting <a href="#Dither">Dither</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 776 | </tr> |
| 777 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 778 | <td><a name="SkPaint_kFakeBoldText_Flag"> <code><strong>SkPaint::kFakeBoldText_Flag </strong></code> </a></td><td>0x0020</td><td>mask for setting <a href="#Fake_Bold">Fake Bold</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 779 | </tr> |
| 780 | <tr> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 781 | <td><a name="SkPaint_kLinearText_Flag"> <code><strong>SkPaint::kLinearText_Flag </strong></code> </a></td><td>0x0040</td><td>mask for setting <a href="#Linear_Text">Linear Text</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 782 | </tr> |
| 783 | <tr> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 784 | <td><a name="SkPaint_kSubpixelText_Flag"> <code><strong>SkPaint::kSubpixelText_Flag </strong></code> </a></td><td>0x0080</td><td>mask for setting <a href="#Subpixel_Text">Subpixel Text</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 785 | </tr> |
| 786 | <tr> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 787 | <td><a name="SkPaint_kDevKernText_Flag"> <code><strong>SkPaint::kDevKernText_Flag </strong></code> </a></td><td>0x0100</td><td>mask for setting <a href="#Full_Hinting_Spacing">Full Hinting Spacing</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 788 | </tr> |
| 789 | <tr> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 790 | <td><a name="SkPaint_kLCDRenderText_Flag"> <code><strong>SkPaint::kLCDRenderText_Flag </strong></code> </a></td><td>0x0200</td><td>mask for setting <a href="#LCD_Text">LCD Text</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 791 | </tr> |
| 792 | <tr> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 793 | <td><a name="SkPaint_kEmbeddedBitmapText_Flag"> <code><strong>SkPaint::kEmbeddedBitmapText_Flag </strong></code> </a></td><td>0x0400</td><td>mask for setting <a href="#Font_Embedded_Bitmaps">Font Embedded Bitmaps</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 794 | </tr> |
| 795 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 796 | <td><a name="SkPaint_kAutoHinting_Flag"> <code><strong>SkPaint::kAutoHinting_Flag </strong></code> </a></td><td>0x0800</td><td>mask for setting <a href="#Automatic_Hinting">Automatic Hinting</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 797 | </tr> |
| 798 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 799 | <td><a name="SkPaint_kVerticalText_Flag"> <code><strong>SkPaint::kVerticalText_Flag </strong></code> </a></td><td>0x1000</td><td>mask for setting <a href="#Vertical_Text">Vertical Text</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 800 | </tr> |
| 801 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 802 | <td><a name="SkPaint_kGenA8FromLCD_Flag"> <code><strong>SkPaint::kGenA8FromLCD_Flag </strong></code> </a></td><td>0x2000</td><td>not intended for public use</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 803 | </tr> |
| 804 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 805 | <td><a name="SkPaint_kAllFlags"> <code><strong>SkPaint::kAllFlags </strong></code> </a></td><td>0xFFFF</td><td>mask of all <a href="#Flags">Flags</a>, including private flags and flags reserved for future use</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 806 | </tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 807 | <a href="#Flags">Flags</a> default to all flags clear, disabling the associated feature. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 808 | |
| 809 | </table> |
| 810 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 811 | ## <a name="SkPaint_ReserveFlags"></a> Enum SkPaint::ReserveFlags |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 812 | |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 813 | soonOnly valid for Android framework. |
| 814 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 815 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 816 | enum <a href="#SkPaint_ReserveFlags">ReserveFlags</a> { |
| 817 | <a href="#SkPaint_kUnderlineText_ReserveFlag">kUnderlineText ReserveFlag</a> = 0x08, |
| 818 | <a href="#SkPaint_kStrikeThruText_ReserveFlag">kStrikeThruText ReserveFlag</a> = 0x10, |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 819 | }; |
| 820 | </pre> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 821 | |
| 822 | ### Constants |
| 823 | |
| 824 | <table> |
| 825 | <tr> |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 826 | <td><a name="SkPaint_kUnderlineText_ReserveFlag"> <code><strong>SkPaint::kUnderlineText_ReserveFlag </strong></code> </a></td><td>0x0008</td><td>soon</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 827 | </tr> |
| 828 | <tr> |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 829 | <td><a name="SkPaint_kStrikeThruText_ReserveFlag"> <code><strong>SkPaint::kStrikeThruText_ReserveFlag </strong></code> </a></td><td>0x0010</td><td>soon</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 830 | </tr> |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 831 | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 832 | </table> |
| 833 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 834 | <a name="SkPaint_getFlags"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 835 | ## getFlags |
| 836 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 837 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 838 | uint32_t getFlags() const |
| 839 | </pre> |
| 840 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 841 | Returns paint settings described by <a href="#Flags">Flags</a>. Each setting uses one |
| 842 | bit, and can be tested with <a href="#Flags">Flags</a> members. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 843 | |
| 844 | ### Return Value |
| 845 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 846 | zero, one, or more bits described by <a href="#Flags">Flags</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 847 | |
| 848 | ### Example |
| 849 | |
| 850 | <div><fiddle-embed name="8a3f8c309533388b01aa66e1267f322d"> |
| 851 | |
| 852 | #### Example Output |
| 853 | |
| 854 | ~~~~ |
| 855 | (SkPaint::kAntiAlias_Flag & paint.getFlags()) != 0 |
| 856 | ~~~~ |
| 857 | |
| 858 | </fiddle-embed></div> |
| 859 | |
| 860 | --- |
| 861 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 862 | <a name="SkPaint_setFlags"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 863 | ## setFlags |
| 864 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 865 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 866 | void setFlags(uint32_t flags) |
| 867 | </pre> |
| 868 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 869 | Replaces <a href="#Flags">Flags</a> with <a href="#SkPaint_setFlags_flags">flags</a>, the union of the <a href="#Flags">Flags</a> members. |
| 870 | All <a href="#Flags">Flags</a> members may be cleared, or one or more may be set. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 871 | |
| 872 | ### Parameters |
| 873 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 874 | <table> <tr> <td><a name="SkPaint_setFlags_flags"> <code><strong>flags </strong></code> </a></td> <td> |
| 875 | union of <a href="#Flags">Flags</a> for <a href="#Paint">Paint</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 876 | </tr> |
| 877 | </table> |
| 878 | |
| 879 | ### Example |
| 880 | |
| 881 | <div><fiddle-embed name="54baed3f6bc4b9c31ba664e27767fdc7"> |
| 882 | |
| 883 | #### Example Output |
| 884 | |
| 885 | ~~~~ |
| 886 | paint.isAntiAlias() |
| 887 | paint.isDither() |
| 888 | ~~~~ |
| 889 | |
| 890 | </fiddle-embed></div> |
| 891 | |
| 892 | --- |
| 893 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 894 | ## <a name="Anti-alias"></a> Anti-alias |
| 895 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 896 | Anti-alias drawing approximates partial pixel coverage with transparency. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 897 | If <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a> is clear, pixel centers contained by the shape edge are drawn opaque. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 898 | If <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a> is set, pixels are drawn with <a href="undocumented#Alpha">Color Alpha</a> equal to their coverage. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 899 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 900 | The rule for <a href="undocumented#Alias">Aliased</a> pixels is inconsistent across platforms. A shape edge |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 901 | passing through the pixel center may, but is not required to, draw the pixel. |
| 902 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 903 | <a href="undocumented#Raster_Engine">Raster Engine</a> draws <a href="undocumented#Alias">Aliased</a> pixels whose centers are on or to the right of the start of an |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 904 | active <a href="SkPath_Reference#Path">Path</a> edge, and whose center is to the left of the end of the active <a href="SkPath_Reference#Path">Path</a> edge. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 905 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 906 | A platform may only support Anti-aliased drawing. Some GPU-backed platforms use |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 907 | <a href="undocumented#Supersampling">Supersampling</a> to Anti-alias all drawing, and have no mechanism to selectively |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 908 | <a href="undocumented#Alias">Alias</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 909 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 910 | The amount of coverage computed for Anti-aliased pixels also varies across platforms. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 911 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 912 | Anti-alias is disabled by default. |
| 913 | Anti-alias can be enabled by default by setting <a href="undocumented#SkPaintDefaults_Flags">SkPaintDefaults Flags</a> to <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 914 | at compile time. |
| 915 | |
| 916 | ### Example |
| 917 | |
| 918 | <div><fiddle-embed name="a6575a49467ce8d28bb01cc7638fa04d"><div>A red line is drawn with transparency on the edges to make it look smoother. |
| 919 | A blue line draws only where the pixel centers are contained. |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 920 | The lines are drawn into <a href="SkBitmap_Reference#Bitmap">Bitmap</a>, then drawn magnified to make the |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 921 | <a href="undocumented#Alias">Aliasing</a> easier to see. |
| 922 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 923 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 924 | <a name="SkPaint_isAntiAlias"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 925 | ## isAntiAlias |
| 926 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 927 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 928 | bool isAntiAlias() const |
| 929 | </pre> |
| 930 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 931 | If true, pixels on the active edges of <a href="SkPath_Reference#Path">Path</a> may be drawn with partial transparency. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 932 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 933 | Equivalent to <a href="#SkPaint_getFlags">getFlags</a> masked with <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 934 | |
| 935 | ### Return Value |
| 936 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 937 | <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 938 | |
| 939 | ### Example |
| 940 | |
| 941 | <div><fiddle-embed name="d7d5f4f7da7acd5104a652f490c6f7b8"> |
| 942 | |
| 943 | #### Example Output |
| 944 | |
| 945 | ~~~~ |
| 946 | paint.isAntiAlias() == !!(paint.getFlags() & SkPaint::kAntiAlias_Flag) |
| 947 | paint.isAntiAlias() == !!(paint.getFlags() & SkPaint::kAntiAlias_Flag) |
| 948 | ~~~~ |
| 949 | |
| 950 | </fiddle-embed></div> |
| 951 | |
| 952 | --- |
| 953 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 954 | <a name="SkPaint_setAntiAlias"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 955 | ## setAntiAlias |
| 956 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 957 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 958 | void setAntiAlias(bool aa) |
| 959 | </pre> |
| 960 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 961 | Requests, but does not require, that <a href="SkPath_Reference#Path">Path</a> edge pixels draw opaque or with |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 962 | partial transparency. |
| 963 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 964 | Sets <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a> if <a href="#SkPaint_setAntiAlias_aa">aa</a> is true. |
| 965 | Clears <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a> if <a href="#SkPaint_setAntiAlias_aa">aa</a> is false. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 966 | |
| 967 | ### Parameters |
| 968 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 969 | <table> <tr> <td><a name="SkPaint_setAntiAlias_aa"> <code><strong>aa </strong></code> </a></td> <td> |
| 970 | setting for <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 971 | </tr> |
| 972 | </table> |
| 973 | |
| 974 | ### Example |
| 975 | |
| 976 | <div><fiddle-embed name="c2ff148374d01cbef845b223e725905c"> |
| 977 | |
| 978 | #### Example Output |
| 979 | |
| 980 | ~~~~ |
| 981 | paint1 == paint2 |
| 982 | ~~~~ |
| 983 | |
| 984 | </fiddle-embed></div> |
| 985 | |
| 986 | --- |
| 987 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 988 | ## <a name="Dither"></a> Dither |
| 989 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 990 | <a href="#Dither">Dither</a> increases fidelity by adjusting the color of adjacent pixels. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 991 | This can help to smooth color transitions and reducing banding in gradients. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 992 | Dithering lessens visible banding from <a href="SkImageInfo_Reference#kRGB_565_SkColorType">kRGB_565_SkColorType</a> |
| 993 | and <a href="SkImageInfo_Reference#kRGBA_8888_SkColorType">kRGBA_8888_SkColorType</a> gradients, |
| 994 | and improves rendering into a <a href="SkImageInfo_Reference#kRGB_565_SkColorType">kRGB_565_SkColorType</a> <a href="SkSurface_Reference#Surface">Surface</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 995 | |
| 996 | Dithering is always enabled for linear gradients drawing into |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 997 | <a href="SkImageInfo_Reference#kRGB_565_SkColorType">kRGB_565_SkColorType</a> <a href="SkSurface_Reference#Surface">Surface</a> and <a href="SkImageInfo_Reference#kRGBA_8888_SkColorType">kRGBA_8888_SkColorType</a> <a href="SkSurface_Reference#Surface">Surface</a>. |
| 998 | <a href="#Dither">Dither</a> cannot be enabled for <a href="SkImageInfo_Reference#kAlpha_8_SkColorType">kAlpha_8_SkColorType</a> <a href="SkSurface_Reference#Surface">Surface</a> and |
| 999 | <a href="SkImageInfo_Reference#kRGBA_F16_SkColorType">kRGBA_F16_SkColorType</a> <a href="SkSurface_Reference#Surface">Surface</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1000 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1001 | <a href="#Dither">Dither</a> is disabled by default. |
| 1002 | <a href="#Dither">Dither</a> can be enabled by default by setting <a href="undocumented#SkPaintDefaults_Flags">SkPaintDefaults Flags</a> to <a href="#SkPaint_kDither_Flag">kDither Flag</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1003 | at compile time. |
| 1004 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1005 | Some platform implementations may ignore dithering. Setto ignore <a href="#Dither">Dither</a> on <a href="undocumented#GPU_Surface">GPU Surface</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1006 | |
| 1007 | ### Example |
| 1008 | |
| 1009 | <div><fiddle-embed name="8b26507690b71462f44642b911890bbf"><div>Dithering in the bottom half more closely approximates the requested color by |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 1010 | alternating nearby colors from pixel to pixel. |
| 1011 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1012 | |
| 1013 | ### Example |
| 1014 | |
| 1015 | <div><fiddle-embed name="76d4d4a7931a48495e4d5f54e073be53"><div>Dithering introduces subtle adjustments to color to smooth gradients. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1016 | Drawing the gradient repeatedly with <a href="undocumented#SkBlendMode_kPlus">SkBlendMode::kPlus</a> exaggerates the |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 1017 | dither, making it easier to see. |
| 1018 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1019 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1020 | <a name="SkPaint_isDither"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1021 | ## isDither |
| 1022 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1023 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1024 | bool isDither() const |
| 1025 | </pre> |
| 1026 | |
| 1027 | If true, color error may be distributed to smooth color transition. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1028 | Equivalent to <a href="#SkPaint_getFlags">getFlags</a> masked with <a href="#SkPaint_kDither_Flag">kDither Flag</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1029 | |
| 1030 | ### Return Value |
| 1031 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1032 | <a href="#SkPaint_kDither_Flag">kDither Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1033 | |
| 1034 | ### Example |
| 1035 | |
| 1036 | <div><fiddle-embed name="f4ce93f6c5e7335436a985377fd980c0"> |
| 1037 | |
| 1038 | #### Example Output |
| 1039 | |
| 1040 | ~~~~ |
| 1041 | paint.isDither() == !!(paint.getFlags() & SkPaint::kDither_Flag) |
| 1042 | paint.isDither() == !!(paint.getFlags() & SkPaint::kDither_Flag) |
| 1043 | ~~~~ |
| 1044 | |
| 1045 | </fiddle-embed></div> |
| 1046 | |
| 1047 | --- |
| 1048 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1049 | <a name="SkPaint_setDither"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1050 | ## setDither |
| 1051 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1052 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1053 | void setDither(bool dither) |
| 1054 | </pre> |
| 1055 | |
| 1056 | Requests, but does not require, to distribute color error. |
| 1057 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1058 | Sets <a href="#SkPaint_kDither_Flag">kDither Flag</a> if <a href="#SkPaint_setDither_dither">dither</a> is true. |
| 1059 | Clears <a href="#SkPaint_kDither_Flag">kDither Flag</a> if <a href="#SkPaint_setDither_dither">dither</a> is false. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1060 | |
| 1061 | ### Parameters |
| 1062 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1063 | <table> <tr> <td><a name="SkPaint_setDither_dither"> <code><strong>dither </strong></code> </a></td> <td> |
| 1064 | setting for <a href="#SkPaint_kDither_Flag">kDither Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1065 | </tr> |
| 1066 | </table> |
| 1067 | |
| 1068 | ### Example |
| 1069 | |
| 1070 | <div><fiddle-embed name="69b7162e8324d9239dd02dd9ada2bdff"> |
| 1071 | |
| 1072 | #### Example Output |
| 1073 | |
| 1074 | ~~~~ |
| 1075 | paint1 == paint2 |
| 1076 | ~~~~ |
| 1077 | |
| 1078 | </fiddle-embed></div> |
| 1079 | |
| 1080 | ### See Also |
| 1081 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1082 | <a href="SkImageInfo_Reference#kRGB_565_SkColorType">kRGB_565_SkColorType</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1083 | |
| 1084 | --- |
| 1085 | |
| 1086 | ### See Also |
| 1087 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1088 | Gradient <a href="undocumented#RGB">Color RGB</a>-565 |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1089 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 1090 | ## <a name="Device_Text"></a> Device Text |
| 1091 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1092 | <a href="#LCD_Text">LCD Text</a> and <a href="#Subpixel_Text">Subpixel Text</a> increase the precision of glyph position. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1093 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1094 | When set, <a href="#SkPaint_Flags">Flags</a> <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a> takes advantage of the organization of <a href="undocumented#RGB">Color RGB</a> stripes that |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1095 | create a color, and relies |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1096 | on the small size of the stripe and visual perception to make the color fringing imperceptible. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1097 | <a href="#LCD_Text">LCD Text</a> can be enabled on devices that orient stripes horizontally or vertically, and that order |
| 1098 | the color components as <a href="undocumented#RGB">Color RGB</a> or <a href="undocumented#RBG">Color RBG</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1099 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1100 | <a href="#SkPaint_Flags">Flags</a> <a href="#SkPaint_kSubpixelText_Flag">kSubpixelText Flag</a> uses the pixel transparency to represent a fractional offset. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1101 | As the opaqueness |
| 1102 | of the color increases, the edge of the glyph appears to move towards the outside of the pixel. |
| 1103 | |
| 1104 | Either or both techniques can be enabled. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1105 | <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a> and <a href="#SkPaint_kSubpixelText_Flag">kSubpixelText Flag</a> are clear by default. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1106 | <a href="#LCD_Text">LCD Text</a> or <a href="#Subpixel_Text">Subpixel Text</a> can be enabled by default by setting <a href="undocumented#SkPaintDefaults_Flags">SkPaintDefaults Flags</a> to |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1107 | <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a> or <a href="#SkPaint_kSubpixelText_Flag">kSubpixelText Flag</a> (or both) at compile time. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1108 | |
| 1109 | ### Example |
| 1110 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1111 | <div><fiddle-embed name="4606ae1be792d6bc46d496432f050ee9"><div>Four commas are drawn normally and with combinations of <a href="#LCD_Text">LCD Text</a> and <a href="#Subpixel_Text">Subpixel Text</a>. |
| 1112 | When <a href="#Subpixel_Text">Subpixel Text</a> is disabled, the comma <a href="undocumented#Glyph">Glyphs</a> are identical, but not evenly spaced. |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 1113 | When <a href="#Subpixel_Text">Subpixel Text</a> is enabled, the comma <a href="undocumented#Glyph">Glyphs</a> are unique, but appear evenly spaced. |
| 1114 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1115 | |
| 1116 | ## <a name="Linear_Text"></a> Linear Text |
| 1117 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1118 | <a href="#Linear_Text">Linear Text</a> selects whether text is rendered as a <a href="undocumented#Glyph">Glyph</a> or as a <a href="SkPath_Reference#Path">Path</a>. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1119 | If <a href="#SkPaint_kLinearText_Flag">kLinearText Flag</a> is set, it has the same effect as setting <a href="#SkPaint_Hinting">Hinting</a> to <a href="#SkPaint_kNormal_Hinting">kNormal Hinting</a>. |
Cary Clark | d0530ba | 2017-09-14 11:25:39 -0400 | [diff] [blame] | 1120 | If <a href="#SkPaint_kLinearText_Flag">kLinearText Flag</a> is clear, it is the same as setting <a href="#SkPaint_Hinting">Hinting</a> to <a href="#SkPaint_kNo_Hinting">kNo Hinting</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1121 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1122 | <a name="SkPaint_isLinearText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1123 | ## isLinearText |
| 1124 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1125 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1126 | bool isLinearText() const |
| 1127 | </pre> |
| 1128 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1129 | If true, text is converted to <a href="SkPath_Reference#Path">Path</a> before drawing and measuring. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1130 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1131 | Equivalent to <a href="#SkPaint_getFlags">getFlags</a> masked with <a href="#SkPaint_kLinearText_Flag">kLinearText Flag</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1132 | |
| 1133 | ### Return Value |
| 1134 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1135 | <a href="#SkPaint_kLinearText_Flag">kLinearText Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1136 | |
| 1137 | ### Example |
| 1138 | |
| 1139 | <div><fiddle-embed name="2890ad644f980637837e6fcb386fb462"></fiddle-embed></div> |
| 1140 | |
| 1141 | ### See Also |
| 1142 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1143 | <a href="#SkPaint_setLinearText">setLinearText</a> <a href="#SkPaint_Hinting">Hinting</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1144 | |
| 1145 | --- |
| 1146 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1147 | <a name="SkPaint_setLinearText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1148 | ## setLinearText |
| 1149 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1150 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1151 | void setLinearText(bool linearText) |
| 1152 | </pre> |
| 1153 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1154 | If true, text is converted to <a href="SkPath_Reference#Path">Path</a> before drawing and measuring. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1155 | By default, <a href="#SkPaint_kLinearText_Flag">kLinearText Flag</a> is clear. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1156 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1157 | Sets <a href="#SkPaint_kLinearText_Flag">kLinearText Flag</a> if <a href="#SkPaint_setLinearText_linearText">linearText</a> is true. |
| 1158 | Clears <a href="#SkPaint_kLinearText_Flag">kLinearText Flag</a> if <a href="#SkPaint_setLinearText_linearText">linearText</a> is false. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1159 | |
| 1160 | ### Parameters |
| 1161 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1162 | <table> <tr> <td><a name="SkPaint_setLinearText_linearText"> <code><strong>linearText </strong></code> </a></td> <td> |
| 1163 | setting for <a href="#SkPaint_kLinearText_Flag">kLinearText Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1164 | </tr> |
| 1165 | </table> |
| 1166 | |
| 1167 | ### Example |
| 1168 | |
| 1169 | <div><fiddle-embed name="c93bb912f3bddfb4d96d3ad70ada552b"></fiddle-embed></div> |
| 1170 | |
| 1171 | ### See Also |
| 1172 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1173 | <a href="#SkPaint_isLinearText">isLinearText</a> <a href="#SkPaint_Hinting">Hinting</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1174 | |
| 1175 | --- |
| 1176 | |
| 1177 | ## <a name="Subpixel_Text"></a> Subpixel Text |
| 1178 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1179 | <a href="#SkPaint_Flags">Flags</a> <a href="#SkPaint_kSubpixelText_Flag">kSubpixelText Flag</a> uses the pixel transparency to represent a fractional offset. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1180 | As the opaqueness |
| 1181 | of the color increases, the edge of the glyph appears to move towards the outside of the pixel. |
| 1182 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1183 | <a name="SkPaint_isSubpixelText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1184 | ## isSubpixelText |
| 1185 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1186 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1187 | bool isSubpixelText() const |
| 1188 | </pre> |
| 1189 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1190 | If true, <a href="undocumented#Glyph">Glyphs</a> at different sub-pixel positions may differ on pixel edge coverage. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1191 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1192 | Equivalent to <a href="#SkPaint_getFlags">getFlags</a> masked with <a href="#SkPaint_kSubpixelText_Flag">kSubpixelText Flag</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1193 | |
| 1194 | ### Return Value |
| 1195 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1196 | <a href="#SkPaint_kSubpixelText_Flag">kSubpixelText Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1197 | |
| 1198 | ### Example |
| 1199 | |
| 1200 | <div><fiddle-embed name="abe9afc0932e2199324ae6cbb396e67c"> |
| 1201 | |
| 1202 | #### Example Output |
| 1203 | |
| 1204 | ~~~~ |
| 1205 | paint.isSubpixelText() == !!(paint.getFlags() & SkPaint::kSubpixelText_Flag) |
| 1206 | paint.isSubpixelText() == !!(paint.getFlags() & SkPaint::kSubpixelText_Flag) |
| 1207 | ~~~~ |
| 1208 | |
| 1209 | </fiddle-embed></div> |
| 1210 | |
| 1211 | --- |
| 1212 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1213 | <a name="SkPaint_setSubpixelText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1214 | ## setSubpixelText |
| 1215 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1216 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1217 | void setSubpixelText(bool subpixelText) |
| 1218 | </pre> |
| 1219 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1220 | Requests, but does not require, that <a href="undocumented#Glyph">Glyphs</a> respect sub-pixel positioning. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1221 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1222 | Sets <a href="#SkPaint_kSubpixelText_Flag">kSubpixelText Flag</a> if <a href="#SkPaint_setSubpixelText_subpixelText">subpixelText</a> is true. |
| 1223 | Clears <a href="#SkPaint_kSubpixelText_Flag">kSubpixelText Flag</a> if <a href="#SkPaint_setSubpixelText_subpixelText">subpixelText</a> is false. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1224 | |
| 1225 | ### Parameters |
| 1226 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1227 | <table> <tr> <td><a name="SkPaint_setSubpixelText_subpixelText"> <code><strong>subpixelText </strong></code> </a></td> <td> |
| 1228 | setting for <a href="#SkPaint_kSubpixelText_Flag">kSubpixelText Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1229 | </tr> |
| 1230 | </table> |
| 1231 | |
| 1232 | ### Example |
| 1233 | |
| 1234 | <div><fiddle-embed name="a77bbc1a4e3be9a8ab0f842f877c5ee4"> |
| 1235 | |
| 1236 | #### Example Output |
| 1237 | |
| 1238 | ~~~~ |
| 1239 | paint1 == paint2 |
| 1240 | ~~~~ |
| 1241 | |
| 1242 | </fiddle-embed></div> |
| 1243 | |
| 1244 | --- |
| 1245 | |
| 1246 | ## <a name="LCD_Text"></a> LCD Text |
| 1247 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1248 | When set, <a href="#SkPaint_Flags">Flags</a> <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a> takes advantage of the organization of <a href="undocumented#RGB">Color RGB</a> stripes that |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1249 | create a color, and relies |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1250 | on the small size of the stripe and visual perception to make the color fringing imperceptible. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1251 | <a href="#LCD_Text">LCD Text</a> can be enabled on devices that orient stripes horizontally or vertically, and that order |
| 1252 | the color components as <a href="undocumented#RGB">Color RGB</a> or <a href="undocumented#RBG">Color RBG</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1253 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1254 | <a name="SkPaint_isLCDRenderText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1255 | ## isLCDRenderText |
| 1256 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1257 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1258 | bool isLCDRenderText() const |
| 1259 | </pre> |
| 1260 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1261 | If true, <a href="undocumented#Glyph">Glyphs</a> may use LCD striping to improve glyph edges. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1262 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1263 | Returns true if <a href="#SkPaint_Flags">Flags</a> <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a> is set. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1264 | |
| 1265 | ### Return Value |
| 1266 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1267 | <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1268 | |
| 1269 | ### Example |
| 1270 | |
| 1271 | <div><fiddle-embed name="68e1fd95dd2fd06a333899d2bd2396b9"> |
| 1272 | |
| 1273 | #### Example Output |
| 1274 | |
| 1275 | ~~~~ |
| 1276 | paint.isLCDRenderText() == !!(paint.getFlags() & SkPaint::kLCDRenderText_Flag) |
| 1277 | paint.isLCDRenderText() == !!(paint.getFlags() & SkPaint::kLCDRenderText_Flag) |
| 1278 | ~~~~ |
| 1279 | |
| 1280 | </fiddle-embed></div> |
| 1281 | |
| 1282 | --- |
| 1283 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1284 | <a name="SkPaint_setLCDRenderText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1285 | ## setLCDRenderText |
| 1286 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1287 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1288 | void setLCDRenderText(bool lcdText) |
| 1289 | </pre> |
| 1290 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1291 | Requests, but does not require, that <a href="undocumented#Glyph">Glyphs</a> use LCD striping for glyph edges. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1292 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1293 | Sets <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a> if <a href="#SkPaint_setLCDRenderText_lcdText">lcdText</a> is true. |
| 1294 | Clears <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a> if <a href="#SkPaint_setLCDRenderText_lcdText">lcdText</a> is false. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1295 | |
| 1296 | ### Parameters |
| 1297 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1298 | <table> <tr> <td><a name="SkPaint_setLCDRenderText_lcdText"> <code><strong>lcdText </strong></code> </a></td> <td> |
| 1299 | setting for <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1300 | </tr> |
| 1301 | </table> |
| 1302 | |
| 1303 | ### Example |
| 1304 | |
| 1305 | <div><fiddle-embed name="50dedf8450159571a3edaf4f0050defe"> |
| 1306 | |
| 1307 | #### Example Output |
| 1308 | |
| 1309 | ~~~~ |
| 1310 | paint1 == paint2 |
| 1311 | ~~~~ |
| 1312 | |
| 1313 | </fiddle-embed></div> |
| 1314 | |
| 1315 | --- |
| 1316 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 1317 | ## <a name="Font_Embedded_Bitmaps"></a> Font Embedded Bitmaps |
| 1318 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1319 | <a href="#Font_Embedded_Bitmaps">Font Embedded Bitmaps</a> allows selecting custom sized bitmap <a href="undocumented#Glyph">Glyphs</a>. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1320 | <a href="#SkPaint_Flags">Flags</a> <a href="#SkPaint_kEmbeddedBitmapText_Flag">kEmbeddedBitmapText Flag</a> when set chooses an embedded bitmap glyph over an outline contained |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1321 | in a font if the platform supports this option. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1322 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1323 | FreeType selects the bitmap glyph if available when <a href="#SkPaint_kEmbeddedBitmapText_Flag">kEmbeddedBitmapText Flag</a> is set, and selects |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1324 | the outline glyph if <a href="#SkPaint_kEmbeddedBitmapText_Flag">kEmbeddedBitmapText Flag</a> is clear. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1325 | Windows may select the bitmap glyph but is not required to do so. |
| 1326 | <a href="undocumented#OS_X">OS X</a> and iOS do not support this option. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1327 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1328 | <a href="#Font_Embedded_Bitmaps">Font Embedded Bitmaps</a> is disabled by default. |
| 1329 | <a href="#Font_Embedded_Bitmaps">Font Embedded Bitmaps</a> can be enabled by default by setting <a href="undocumented#SkPaintDefaults_Flags">SkPaintDefaults Flags</a> to |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1330 | <a href="#SkPaint_kEmbeddedBitmapText_Flag">kEmbeddedBitmapText Flag</a> at compile time. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1331 | |
| 1332 | ### Example |
| 1333 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1334 | <pre style="padding: 1em 1em 1em 1em; font-size: 13px width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 1335 | <div>The "hintgasp" TrueType font in the Skia resources/fonts directory |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1336 | includes an embedded bitmap Glyph at odd font sizes. This example works |
| 1337 | on platforms that use FreeType as their Font_Engine. |
| 1338 | Windows may, but is not required to, return a bitmap glyph if |
| 1339 | kEmbeddedBitmapText_Flag is set.</div>SkBitmap bitmap; |
| 1340 | bitmap.allocN32Pixels(30, 15); |
| 1341 | bitmap.eraseColor(0); |
| 1342 | SkCanvas offscreen(bitmap); |
| 1343 | SkPaint paint; |
| 1344 | paint.setAntiAlias(true); |
| 1345 | paint.setTextSize(13); |
Hal Canary | 53e5e7d | 2017-12-08 14:25:14 -0500 | [diff] [blame] | 1346 | paint.setTypeface(MakeResourceAsTypeface("fonts/hintgasp.ttf")); |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1347 | for (bool embedded : { false, true}) { |
| 1348 | paint.setEmbeddedBitmapText(embedded); |
| 1349 | offscreen.drawString("A", embedded ? 5 : 15, 15, paint); |
| 1350 | } |
| 1351 | canvas->drawBitmap(bitmap, 0, 0); |
| 1352 | canvas->scale(10, 10); |
| 1353 | canvas->drawBitmap(bitmap, -2, 1); |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 1354 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1355 | </pre> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1356 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1357 | <a name="SkPaint_isEmbeddedBitmapText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1358 | ## isEmbeddedBitmapText |
| 1359 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1360 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1361 | bool isEmbeddedBitmapText() const |
| 1362 | </pre> |
| 1363 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1364 | If true, <a href="undocumented#Engine">Font Engine</a> may return <a href="undocumented#Glyph">Glyphs</a> from font bitmaps instead of from outlines. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1365 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1366 | Equivalent to <a href="#SkPaint_getFlags">getFlags</a> masked with <a href="#SkPaint_kEmbeddedBitmapText_Flag">kEmbeddedBitmapText Flag</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1367 | |
| 1368 | ### Return Value |
| 1369 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1370 | <a href="#SkPaint_kEmbeddedBitmapText_Flag">kEmbeddedBitmapText Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1371 | |
| 1372 | ### Example |
| 1373 | |
| 1374 | <div><fiddle-embed name="eba10b27b790e87183ae451b3fc5c4b1"> |
| 1375 | |
| 1376 | #### Example Output |
| 1377 | |
| 1378 | ~~~~ |
| 1379 | paint.isEmbeddedBitmapText() == !!(paint.getFlags() & SkPaint::kEmbeddedBitmapText_Flag) |
| 1380 | paint.isEmbeddedBitmapText() == !!(paint.getFlags() & SkPaint::kEmbeddedBitmapText_Flag) |
| 1381 | ~~~~ |
| 1382 | |
| 1383 | </fiddle-embed></div> |
| 1384 | |
| 1385 | --- |
| 1386 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1387 | <a name="SkPaint_setEmbeddedBitmapText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1388 | ## setEmbeddedBitmapText |
| 1389 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1390 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1391 | void setEmbeddedBitmapText(bool useEmbeddedBitmapText) |
| 1392 | </pre> |
| 1393 | |
| 1394 | Requests, but does not require, to use bitmaps in fonts instead of outlines. |
| 1395 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1396 | Sets <a href="#SkPaint_kEmbeddedBitmapText_Flag">kEmbeddedBitmapText Flag</a> if <a href="#SkPaint_setEmbeddedBitmapText_useEmbeddedBitmapText">useEmbeddedBitmapText</a> is true. |
| 1397 | Clears <a href="#SkPaint_kEmbeddedBitmapText_Flag">kEmbeddedBitmapText Flag</a> if <a href="#SkPaint_setEmbeddedBitmapText_useEmbeddedBitmapText">useEmbeddedBitmapText</a> is false. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1398 | |
| 1399 | ### Parameters |
| 1400 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1401 | <table> <tr> <td><a name="SkPaint_setEmbeddedBitmapText_useEmbeddedBitmapText"> <code><strong>useEmbeddedBitmapText </strong></code> </a></td> <td> |
| 1402 | setting for <a href="#SkPaint_kEmbeddedBitmapText_Flag">kEmbeddedBitmapText Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1403 | </tr> |
| 1404 | </table> |
| 1405 | |
| 1406 | ### Example |
| 1407 | |
| 1408 | <div><fiddle-embed name="246dffdd93a484ba4ad7ecf71198a5d4"> |
| 1409 | |
| 1410 | #### Example Output |
| 1411 | |
| 1412 | ~~~~ |
| 1413 | paint1 == paint2 |
| 1414 | ~~~~ |
| 1415 | |
| 1416 | </fiddle-embed></div> |
| 1417 | |
| 1418 | --- |
| 1419 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 1420 | ## <a name="Automatic_Hinting"></a> Automatic Hinting |
| 1421 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1422 | If <a href="#SkPaint_Hinting">Hinting</a> is set to <a href="#SkPaint_kNormal_Hinting">kNormal Hinting</a> or <a href="#SkPaint_kFull_Hinting">kFull Hinting</a>, <a href="#Automatic_Hinting">Automatic Hinting</a> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1423 | instructs the <a href="undocumented#Font_Manager">Font Manager</a> to always hint <a href="undocumented#Glyph">Glyphs</a>. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1424 | <a href="#Automatic_Hinting">Automatic Hinting</a> has no effect if <a href="#SkPaint_Hinting">Hinting</a> is set to <a href="#SkPaint_kNo_Hinting">kNo Hinting</a> or |
| 1425 | <a href="#SkPaint_kSlight_Hinting">kSlight Hinting</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1426 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1427 | <a href="#Automatic_Hinting">Automatic Hinting</a> only affects platforms that use FreeType as the <a href="undocumented#Font_Manager">Font Manager</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1428 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1429 | <a name="SkPaint_isAutohinted"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1430 | ## isAutohinted |
| 1431 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1432 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1433 | bool isAutohinted() const |
| 1434 | </pre> |
| 1435 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1436 | If true, and if <a href="#SkPaint_Hinting">Hinting</a> is set to <a href="#SkPaint_kNormal_Hinting">kNormal Hinting</a> or <a href="#SkPaint_kFull_Hinting">kFull Hinting</a>, and if |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1437 | platform uses FreeType as the <a href="undocumented#Font_Manager">Font Manager</a>, instruct the <a href="undocumented#Font_Manager">Font Manager</a> to always hint |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1438 | <a href="undocumented#Glyph">Glyphs</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1439 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1440 | Equivalent to <a href="#SkPaint_getFlags">getFlags</a> masked with <a href="#SkPaint_kAutoHinting_Flag">kAutoHinting Flag</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1441 | |
| 1442 | ### Return Value |
| 1443 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1444 | <a href="#SkPaint_kAutoHinting_Flag">kAutoHinting Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1445 | |
| 1446 | ### Example |
| 1447 | |
| 1448 | <div><fiddle-embed name="aa4781afbe3b90e7ef56a287e5b9ce1e"> |
| 1449 | |
| 1450 | #### Example Output |
| 1451 | |
| 1452 | ~~~~ |
| 1453 | paint.isAutohinted() == !!(paint.getFlags() & SkPaint::kAutoHinting_Flag) |
| 1454 | paint.isAutohinted() == !!(paint.getFlags() & SkPaint::kAutoHinting_Flag) |
| 1455 | ~~~~ |
| 1456 | |
| 1457 | </fiddle-embed></div> |
| 1458 | |
| 1459 | ### See Also |
| 1460 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1461 | <a href="#SkPaint_setAutohinted">setAutohinted</a> <a href="#SkPaint_Hinting">Hinting</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1462 | |
| 1463 | --- |
| 1464 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1465 | <a name="SkPaint_setAutohinted"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1466 | ## setAutohinted |
| 1467 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1468 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1469 | void setAutohinted(bool useAutohinter) |
| 1470 | </pre> |
| 1471 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1472 | If <a href="#SkPaint_Hinting">Hinting</a> is set to <a href="#SkPaint_kNormal_Hinting">kNormal Hinting</a> or <a href="#SkPaint_kFull_Hinting">kFull Hinting</a> and <a href="#SkPaint_setAutohinted_useAutohinter">useAutohinter</a> is set, |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1473 | instruct the <a href="undocumented#Font_Manager">Font Manager</a> to always hint <a href="undocumented#Glyph">Glyphs</a>. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1474 | <a href="#Automatic_Hinting">Automatic Hinting</a> has no effect if <a href="#SkPaint_Hinting">Hinting</a> is set to <a href="#SkPaint_kNo_Hinting">kNo Hinting</a> or |
| 1475 | <a href="#SkPaint_kSlight_Hinting">kSlight Hinting</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1476 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1477 | Only affects platforms that use FreeType as the <a href="undocumented#Font_Manager">Font Manager</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1478 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1479 | Sets <a href="#SkPaint_kAutoHinting_Flag">kAutoHinting Flag</a> if <a href="#SkPaint_setAutohinted_useAutohinter">useAutohinter</a> is true. |
| 1480 | Clears <a href="#SkPaint_kAutoHinting_Flag">kAutoHinting Flag</a> if <a href="#SkPaint_setAutohinted_useAutohinter">useAutohinter</a> is false. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1481 | |
| 1482 | ### Parameters |
| 1483 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1484 | <table> <tr> <td><a name="SkPaint_setAutohinted_useAutohinter"> <code><strong>useAutohinter </strong></code> </a></td> <td> |
| 1485 | setting for <a href="#SkPaint_kAutoHinting_Flag">kAutoHinting Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1486 | </tr> |
| 1487 | </table> |
| 1488 | |
| 1489 | ### Example |
| 1490 | |
| 1491 | <div><fiddle-embed name="4e185306d7de9390fe8445eed0139309"></fiddle-embed></div> |
| 1492 | |
| 1493 | ### See Also |
| 1494 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1495 | <a href="#SkPaint_isAutohinted">isAutohinted</a> <a href="#SkPaint_Hinting">Hinting</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1496 | |
| 1497 | --- |
| 1498 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 1499 | ## <a name="Vertical_Text"></a> Vertical Text |
| 1500 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1501 | <a href="undocumented#Text">Text</a> may be drawn by positioning each glyph, or by positioning the first glyph and |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1502 | using <a href="undocumented#Advance">Font Advance</a> to position subsequent <a href="undocumented#Glyph">Glyphs</a>. By default, each successive glyph |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1503 | is positioned to the right of the preceding glyph. <a href="#Vertical_Text">Vertical Text</a> sets successive |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1504 | <a href="undocumented#Glyph">Glyphs</a> to position below the preceding glyph. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1505 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1506 | Skia can translate text character codes as a series of <a href="undocumented#Glyph">Glyphs</a>, but does not implement |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1507 | font substitution, |
| 1508 | textual substitution, line layout, or contextual spacing like Kerning pairs. Use |
| 1509 | a text shaping engine like <a href="http://harfbuzz.org/">HarfBuzz</a> to translate text runs |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1510 | into glyph series. |
| 1511 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1512 | <a href="#Vertical_Text">Vertical Text</a> is clear if text is drawn left to right or set if drawn from top to bottom. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1513 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1514 | <a href="#SkPaint_Flags">Flags</a> <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> if clear draws text left to right. |
| 1515 | <a href="#SkPaint_Flags">Flags</a> <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> if set draws text top to bottom. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1516 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1517 | <a href="#Vertical_Text">Vertical Text</a> is clear by default. |
| 1518 | <a href="#Vertical_Text">Vertical Text</a> can be set by default by setting <a href="undocumented#SkPaintDefaults_Flags">SkPaintDefaults Flags</a> to |
| 1519 | <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> at compile time. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1520 | |
| 1521 | ### Example |
| 1522 | |
| 1523 | <div><fiddle-embed name="8df5800819311b71373d9abb669b49b8"></fiddle-embed></div> |
| 1524 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1525 | <a name="SkPaint_isVerticalText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1526 | ## isVerticalText |
| 1527 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1528 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1529 | bool isVerticalText() const |
| 1530 | </pre> |
| 1531 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1532 | If true, <a href="undocumented#Glyph">Glyphs</a> are drawn top to bottom instead of left to right. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1533 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1534 | Equivalent to <a href="#SkPaint_getFlags">getFlags</a> masked with <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1535 | |
| 1536 | ### Return Value |
| 1537 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1538 | <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1539 | |
| 1540 | ### Example |
| 1541 | |
| 1542 | <div><fiddle-embed name="4a269b16e644d473870ffa873396f139"> |
| 1543 | |
| 1544 | #### Example Output |
| 1545 | |
| 1546 | ~~~~ |
| 1547 | paint.isVerticalText() == !!(paint.getFlags() & SkPaint::kVerticalText_Flag) |
| 1548 | paint.isVerticalText() == !!(paint.getFlags() & SkPaint::kVerticalText_Flag) |
| 1549 | ~~~~ |
| 1550 | |
| 1551 | </fiddle-embed></div> |
| 1552 | |
| 1553 | --- |
| 1554 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1555 | <a name="SkPaint_setVerticalText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1556 | ## setVerticalText |
| 1557 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1558 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1559 | void setVerticalText(bool verticalText) |
| 1560 | </pre> |
| 1561 | |
| 1562 | If true, text advance positions the next glyph below the previous glyph instead of to the |
| 1563 | right of previous glyph. |
| 1564 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1565 | Sets <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> if vertical is true. |
| 1566 | Clears <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> if vertical is false. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1567 | |
| 1568 | ### Parameters |
| 1569 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1570 | <table> <tr> <td><a name="SkPaint_setVerticalText_verticalText"> <code><strong>verticalText </strong></code> </a></td> <td> |
| 1571 | setting for <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1572 | </tr> |
| 1573 | </table> |
| 1574 | |
| 1575 | ### Example |
| 1576 | |
| 1577 | <div><fiddle-embed name="6fbd7e9e1a346cb8d7f537786009c736"> |
| 1578 | |
| 1579 | #### Example Output |
| 1580 | |
| 1581 | ~~~~ |
| 1582 | paint1 == paint2 |
| 1583 | ~~~~ |
| 1584 | |
| 1585 | </fiddle-embed></div> |
| 1586 | |
| 1587 | --- |
| 1588 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 1589 | ## <a name="Fake_Bold"></a> Fake Bold |
| 1590 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1591 | <a href="#Fake_Bold">Fake Bold</a> approximates the bold font style accompanying a normal font when a bold font face |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1592 | is not available. Skia does not provide font substitution; it is up to the client to find the |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 1593 | bold font face using the platform <a href="undocumented#Font_Manager">Font Manager</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1594 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1595 | Use <a href="#Text_Skew_X">Text Skew X</a> to approximate an italic font style when the italic font face |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1596 | is not available. |
| 1597 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1598 | A FreeType based port may define SK_USE_FREETYPE_EMBOLDEN at compile time to direct |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1599 | the font engine to create the bold <a href="undocumented#Glyph">Glyphs</a>. Otherwise, the extra bold is computed |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1600 | by increasing the stroke width and setting the <a href="#SkPaint_Style">Style</a> to <a href="#SkPaint_kStrokeAndFill_Style">kStrokeAndFill Style</a> as needed. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1601 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1602 | <a href="#Fake_Bold">Fake Bold</a> is disabled by default. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1603 | |
| 1604 | ### Example |
| 1605 | |
| 1606 | <div><fiddle-embed name="e811f4829a2daaaeaad3795504a7e02a"></fiddle-embed></div> |
| 1607 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1608 | <a name="SkPaint_isFakeBoldText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1609 | ## isFakeBoldText |
| 1610 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1611 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1612 | bool isFakeBoldText() const |
| 1613 | </pre> |
| 1614 | |
| 1615 | If true, approximate bold by increasing the stroke width when creating glyph bitmaps |
| 1616 | from outlines. |
| 1617 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1618 | Equivalent to <a href="#SkPaint_getFlags">getFlags</a> masked with <a href="#SkPaint_kFakeBoldText_Flag">kFakeBoldText Flag</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1619 | |
| 1620 | ### Return Value |
| 1621 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1622 | <a href="#SkPaint_kFakeBoldText_Flag">kFakeBoldText Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1623 | |
| 1624 | ### Example |
| 1625 | |
| 1626 | <div><fiddle-embed name="f54d1f85b16073b80b9eef2e1a1d151d"> |
| 1627 | |
| 1628 | #### Example Output |
| 1629 | |
| 1630 | ~~~~ |
| 1631 | paint.isFakeBoldText() == !!(paint.getFlags() & SkPaint::kFakeBoldText_Flag) |
| 1632 | paint.isFakeBoldText() == !!(paint.getFlags() & SkPaint::kFakeBoldText_Flag) |
| 1633 | ~~~~ |
| 1634 | |
| 1635 | </fiddle-embed></div> |
| 1636 | |
| 1637 | --- |
| 1638 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1639 | <a name="SkPaint_setFakeBoldText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1640 | ## setFakeBoldText |
| 1641 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1642 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1643 | void setFakeBoldText(bool fakeBoldText) |
| 1644 | </pre> |
| 1645 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1646 | Use increased stroke width when creating glyph bitmaps to approximate a bold typeface. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1647 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1648 | Sets <a href="#SkPaint_kFakeBoldText_Flag">kFakeBoldText Flag</a> if <a href="#SkPaint_setFakeBoldText_fakeBoldText">fakeBoldText</a> is true. |
| 1649 | Clears <a href="#SkPaint_kFakeBoldText_Flag">kFakeBoldText Flag</a> if <a href="#SkPaint_setFakeBoldText_fakeBoldText">fakeBoldText</a> is false. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1650 | |
| 1651 | ### Parameters |
| 1652 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1653 | <table> <tr> <td><a name="SkPaint_setFakeBoldText_fakeBoldText"> <code><strong>fakeBoldText </strong></code> </a></td> <td> |
| 1654 | setting for <a href="#SkPaint_kFakeBoldText_Flag">kFakeBoldText Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1655 | </tr> |
| 1656 | </table> |
| 1657 | |
| 1658 | ### Example |
| 1659 | |
| 1660 | <div><fiddle-embed name="594d47858eb11028cb626515a520910a"> |
| 1661 | |
| 1662 | #### Example Output |
| 1663 | |
| 1664 | ~~~~ |
| 1665 | paint1 == paint2 |
| 1666 | ~~~~ |
| 1667 | |
| 1668 | </fiddle-embed></div> |
| 1669 | |
| 1670 | --- |
| 1671 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 1672 | ## <a name="Full_Hinting_Spacing"></a> Full Hinting Spacing |
| 1673 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1674 | if <a href="#SkPaint_Hinting">Hinting</a> is set to <a href="#SkPaint_kFull_Hinting">kFull Hinting</a>, <a href="#Full_Hinting_Spacing">Full Hinting Spacing</a> adjusts the character |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1675 | spacing by the difference of the hinted and Unhinted <a href="undocumented#Left_Side_Bearing">Left Side Bearing</a> and |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1676 | <a href="undocumented#Right_Side_Bearing">Right Side Bearing</a>. <a href="#Full_Hinting_Spacing">Full Hinting Spacing</a> only applies to platforms that use |
| 1677 | FreeType as their <a href="undocumented#Engine">Font Engine</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1678 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1679 | <a href="#Full_Hinting_Spacing">Full Hinting Spacing</a> is not related to text Kerning, where the space between |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1680 | a specific pair of characters is adjusted using data in the font Kerning tables. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1681 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1682 | <a name="SkPaint_isDevKernText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1683 | ## isDevKernText |
| 1684 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1685 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1686 | bool isDevKernText() const |
| 1687 | </pre> |
| 1688 | |
| 1689 | Returns if character spacing may be adjusted by the hinting difference. |
| 1690 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1691 | Equivalent to <a href="#SkPaint_getFlags">getFlags</a> masked with <a href="#SkPaint_kDevKernText_Flag">kDevKernText Flag</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1692 | |
| 1693 | ### Return Value |
| 1694 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1695 | <a href="#SkPaint_kDevKernText_Flag">kDevKernText Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1696 | |
| 1697 | ### Example |
| 1698 | |
| 1699 | <div><fiddle-embed name="4f69a84b2505b12809c30b0cc09c5157"></fiddle-embed></div> |
| 1700 | |
| 1701 | --- |
| 1702 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1703 | <a name="SkPaint_setDevKernText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1704 | ## setDevKernText |
| 1705 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1706 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1707 | void setDevKernText(bool devKernText) |
| 1708 | </pre> |
| 1709 | |
| 1710 | Requests, but does not require, to use hinting to adjust glyph spacing. |
| 1711 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1712 | Sets <a href="#SkPaint_kDevKernText_Flag">kDevKernText Flag</a> if <a href="#SkPaint_setDevKernText_devKernText">devKernText</a> is true. |
| 1713 | Clears <a href="#SkPaint_kDevKernText_Flag">kDevKernText Flag</a> if <a href="#SkPaint_setDevKernText_devKernText">devKernText</a> is false. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1714 | |
| 1715 | ### Parameters |
| 1716 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1717 | <table> <tr> <td><a name="SkPaint_setDevKernText_devKernText"> <code><strong>devKernText </strong></code> </a></td> <td> |
| 1718 | setting for <a href="#SkPaint_setDevKernText_devKernText">devKernText</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1719 | </tr> |
| 1720 | </table> |
| 1721 | |
| 1722 | ### Example |
| 1723 | |
| 1724 | <div><fiddle-embed name="2b718a059072908bf68942503f264797"> |
| 1725 | |
| 1726 | #### Example Output |
| 1727 | |
| 1728 | ~~~~ |
| 1729 | paint1 == paint2 |
| 1730 | ~~~~ |
| 1731 | |
| 1732 | </fiddle-embed></div> |
| 1733 | |
| 1734 | --- |
| 1735 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 1736 | ## <a name="Filter_Quality_Methods"></a> Filter Quality Methods |
| 1737 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1738 | <a href="undocumented#Filter_Quality">Filter Quality</a> trades speed for image filtering when the image is scaled. |
| 1739 | A lower <a href="undocumented#Filter_Quality">Filter Quality</a> draws faster, but has less fidelity. |
| 1740 | A higher <a href="undocumented#Filter_Quality">Filter Quality</a> draws slower, but looks better. |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1741 | If the image is drawn without scaling, the <a href="undocumented#Filter_Quality">Filter Quality</a> choice will not result |
| 1742 | in a noticeable difference. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1743 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1744 | <a href="undocumented#Filter_Quality">Filter Quality</a> is used in <a href="#Paint">Paint</a> passed as a parameter to |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1745 | |
| 1746 | <table> <tr> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1747 | <td><a href="SkCanvas_Reference#SkCanvas_drawBitmap">SkCanvas::drawBitmap</a></td> </tr> <tr> |
| 1748 | <td><a href="SkCanvas_Reference#SkCanvas_drawBitmapRect">SkCanvas::drawBitmapRect</a></td> </tr> <tr> |
| 1749 | <td><a href="SkCanvas_Reference#SkCanvas_drawImage">SkCanvas::drawImage</a></td> </tr> <tr> |
| 1750 | <td><a href="SkCanvas_Reference#SkCanvas_drawImageRect">SkCanvas::drawImageRect</a></td> </tr> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1751 | </table> |
| 1752 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1753 | and when <a href="#Paint">Paint</a> has a <a href="undocumented#Shader">Shader</a> specialization that uses <a href="SkImage_Reference#Image">Image</a> or <a href="SkBitmap_Reference#Bitmap">Bitmap</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1754 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1755 | <a href="undocumented#Filter_Quality">Filter Quality</a> is <a href="undocumented#kNone_SkFilterQuality">kNone_SkFilterQuality</a> by default. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1756 | |
| 1757 | ### Example |
| 1758 | |
| 1759 | <div><fiddle-embed name="ee77f83f7291e07ae0d89f1380c7d67c"></fiddle-embed></div> |
| 1760 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1761 | <a name="SkPaint_getFilterQuality"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1762 | ## getFilterQuality |
| 1763 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1764 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1765 | SkFilterQuality getFilterQuality() const |
| 1766 | </pre> |
| 1767 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1768 | Returns <a href="undocumented#Filter_Quality">Filter Quality</a>, the image filtering level. A lower setting |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1769 | draws faster; a higher setting looks better when the image is scaled. |
| 1770 | |
| 1771 | ### Return Value |
| 1772 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1773 | one of: <a href="undocumented#kNone_SkFilterQuality">kNone_SkFilterQuality</a>, <a href="undocumented#kLow_SkFilterQuality">kLow_SkFilterQuality</a>, |
| 1774 | <a href="undocumented#kMedium_SkFilterQuality">kMedium_SkFilterQuality</a>, <a href="undocumented#kHigh_SkFilterQuality">kHigh_SkFilterQuality</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1775 | |
| 1776 | ### Example |
| 1777 | |
| 1778 | <div><fiddle-embed name="d4ca1f23809b6835c4ba46ea98a86900"> |
| 1779 | |
| 1780 | #### Example Output |
| 1781 | |
| 1782 | ~~~~ |
| 1783 | kNone_SkFilterQuality == paint.getFilterQuality() |
| 1784 | ~~~~ |
| 1785 | |
| 1786 | </fiddle-embed></div> |
| 1787 | |
| 1788 | --- |
| 1789 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1790 | <a name="SkPaint_setFilterQuality"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1791 | ## setFilterQuality |
| 1792 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1793 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1794 | void setFilterQuality(SkFilterQuality quality) |
| 1795 | </pre> |
| 1796 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1797 | Sets <a href="undocumented#Filter_Quality">Filter Quality</a>, the image filtering level. A lower setting |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1798 | draws faster; a higher setting looks better when the image is scaled. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1799 | Does not check to see if <a href="#SkPaint_setFilterQuality_quality">quality</a> is valid. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1800 | |
| 1801 | ### Parameters |
| 1802 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1803 | <table> <tr> <td><a name="SkPaint_setFilterQuality_quality"> <code><strong>quality </strong></code> </a></td> <td> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1804 | one of: <a href="undocumented#kNone_SkFilterQuality">kNone_SkFilterQuality</a>, <a href="undocumented#kLow_SkFilterQuality">kLow_SkFilterQuality</a>, |
| 1805 | <a href="undocumented#kMedium_SkFilterQuality">kMedium_SkFilterQuality</a>, <a href="undocumented#kHigh_SkFilterQuality">kHigh_SkFilterQuality</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1806 | </tr> |
| 1807 | </table> |
| 1808 | |
| 1809 | ### Example |
| 1810 | |
| 1811 | <div><fiddle-embed name="e4288fabf24ee60b645e8bb6ea0afadf"> |
| 1812 | |
| 1813 | #### Example Output |
| 1814 | |
| 1815 | ~~~~ |
| 1816 | kHigh_SkFilterQuality == paint.getFilterQuality() |
| 1817 | ~~~~ |
| 1818 | |
| 1819 | </fiddle-embed></div> |
| 1820 | |
| 1821 | ### See Also |
| 1822 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1823 | <a href="undocumented#SkFilterQuality">SkFilterQuality</a> <a href="undocumented#Image_Scaling">Image Scaling</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1824 | |
| 1825 | --- |
| 1826 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 1827 | ## <a name="Color_Methods"></a> Color Methods |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1828 | |
Cary Clark | ab2621d | 2018-01-30 10:08:57 -0500 | [diff] [blame] | 1829 | | name | description | |
| 1830 | | --- | --- | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1831 | | <a href="#SkPaint_getColor">getColor</a> | returns <a href="undocumented#Alpha">Color Alpha</a> and <a href="undocumented#RGB">Color RGB</a>, one drawing color | |
| 1832 | | <a href="#SkPaint_setColor">setColor</a> | sets <a href="undocumented#Alpha">Color Alpha</a> and <a href="undocumented#RGB">Color RGB</a>, one drawing color | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1833 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1834 | <a href="undocumented#Color">Color</a> specifies the <a href="undocumented#RGB_Red">Color RGB Red</a>, <a href="undocumented#RGB_Blue">Color RGB Blue</a>, <a href="undocumented#RGB_Green">Color RGB Green</a>, and <a href="undocumented#Alpha">Color Alpha</a> |
Cary Clark | ab2621d | 2018-01-30 10:08:57 -0500 | [diff] [blame] | 1835 | values used to draw a filled or stroked shape in a 32-bit value. Each component |
| 1836 | occupies 8-bits, ranging from zero: no contribution; to 255: full intensity. |
| 1837 | All values in any combination are valid. |
| 1838 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1839 | <a href="undocumented#Color">Color</a> is not <a href="undocumented#Premultiply">Premultiplied</a>; <a href="undocumented#Alpha">Color Alpha</a> sets the transparency independent of |
| 1840 | <a href="undocumented#RGB">Color RGB</a>: <a href="undocumented#RGB_Red">Color RGB Red</a>, <a href="undocumented#RGB_Blue">Color RGB Blue</a>, and <a href="undocumented#RGB_Green">Color RGB Green</a>. |
Cary Clark | ab2621d | 2018-01-30 10:08:57 -0500 | [diff] [blame] | 1841 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1842 | The bit positions of <a href="undocumented#Alpha">Color Alpha</a> and <a href="undocumented#RGB">Color RGB</a> are independent of the bit |
Cary Clark | ab2621d | 2018-01-30 10:08:57 -0500 | [diff] [blame] | 1843 | positions on the output device, which may have more or fewer bits, and may have |
| 1844 | a different arrangement. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1845 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1846 | | bit positions | <a href="undocumented#Alpha">Color Alpha</a> | <a href="undocumented#RGB_Red">Color RGB Red</a> | <a href="undocumented#RGB_Blue">Color RGB Blue</a> | <a href="undocumented#RGB_Green">Color RGB Green</a> | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1847 | | --- | --- | --- | --- | --- | |
| 1848 | | | 31 - 24 | 23 - 16 | 15 - 8 | 7 - 0 | |
| 1849 | |
| 1850 | ### Example |
| 1851 | |
| 1852 | <div><fiddle-embed name="214b559d75c65a7bef6ef4be1f860053"></fiddle-embed></div> |
| 1853 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1854 | <a name="SkPaint_getColor"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1855 | ## getColor |
| 1856 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1857 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1858 | SkColor getColor() const |
| 1859 | </pre> |
| 1860 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1861 | Retrieves <a href="undocumented#Alpha">Alpha</a> and <a href="undocumented#RGB">Color RGB</a>, <a href="undocumented#Unpremultiply">Unpremultiplied</a>, packed into 32 bits. |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1862 | Use helpers <a href="undocumented#SkColorGetA">SkColorGetA</a>, <a href="undocumented#SkColorGetR">SkColorGetR</a>, <a href="undocumented#SkColorGetG">SkColorGetG</a>, and <a href="undocumented#SkColorGetB">SkColorGetB</a> to extract |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1863 | a color component. |
| 1864 | |
| 1865 | ### Return Value |
| 1866 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1867 | <a href="undocumented#Unpremultiply">Unpremultiplied</a> <a href="undocumented#ARGB">Color ARGB</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1868 | |
| 1869 | ### Example |
| 1870 | |
| 1871 | <div><fiddle-embed name="72d41f890203109a41f589a7403acae9"> |
| 1872 | |
| 1873 | #### Example Output |
| 1874 | |
| 1875 | ~~~~ |
| 1876 | Yellow is 100% red, 100% green, and 0% blue. |
| 1877 | ~~~~ |
| 1878 | |
| 1879 | </fiddle-embed></div> |
| 1880 | |
| 1881 | ### See Also |
| 1882 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1883 | <a href="undocumented#SkColor">SkColor</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1884 | |
| 1885 | --- |
| 1886 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1887 | <a name="SkPaint_setColor"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1888 | ## setColor |
| 1889 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1890 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1891 | void setColor(SkColor color) |
| 1892 | </pre> |
| 1893 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1894 | Sets <a href="undocumented#Alpha">Alpha</a> and <a href="undocumented#RGB">Color RGB</a> used when stroking and filling. The <a href="#SkPaint_setColor_color">color</a> is a 32-bit value, |
| 1895 | <a href="undocumented#Unpremultiply">Unpremultiplied</a>, packing 8-bit components for <a href="undocumented#Alpha">Alpha</a>, <a href="undocumented#RGB_Red">Red</a>, <a href="undocumented#RGB_Blue">Blue</a>, and <a href="undocumented#RGB_Green">Green</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1896 | |
| 1897 | ### Parameters |
| 1898 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1899 | <table> <tr> <td><a name="SkPaint_setColor_color"> <code><strong>color </strong></code> </a></td> <td> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1900 | <a href="undocumented#Unpremultiply">Unpremultiplied</a> <a href="undocumented#ARGB">Color ARGB</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1901 | </tr> |
| 1902 | </table> |
| 1903 | |
| 1904 | ### Example |
| 1905 | |
| 1906 | <div><fiddle-embed name="6e70f18300bd676a3c056ceb6b62f8df"> |
| 1907 | |
| 1908 | #### Example Output |
| 1909 | |
| 1910 | ~~~~ |
| 1911 | green1 == green2 |
| 1912 | ~~~~ |
| 1913 | |
| 1914 | </fiddle-embed></div> |
| 1915 | |
| 1916 | ### See Also |
| 1917 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1918 | <a href="undocumented#SkColor">SkColor</a> <a href="#SkPaint_setARGB">setARGB</a> <a href="undocumented#SkColorSetARGB">SkColorSetARGB</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1919 | |
| 1920 | --- |
| 1921 | |
| 1922 | ## <a name="Alpha_Methods"></a> Alpha Methods |
| 1923 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1924 | <a href="undocumented#Alpha">Color Alpha</a> sets the transparency independent of <a href="undocumented#RGB">Color RGB</a>: <a href="undocumented#RGB_Red">Color RGB Red</a>, <a href="undocumented#RGB_Blue">Color RGB Blue</a>, and <a href="undocumented#RGB_Green">Color RGB Green</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1925 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1926 | <a name="SkPaint_getAlpha"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1927 | ## getAlpha |
| 1928 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1929 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1930 | uint8_t getAlpha() const |
| 1931 | </pre> |
| 1932 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1933 | Retrieves <a href="undocumented#Alpha">Alpha</a> from the <a href="undocumented#Color">Color</a> used when stroking and filling. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1934 | |
| 1935 | ### Return Value |
| 1936 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1937 | <a href="undocumented#Alpha">Alpha</a> ranging from zero, fully transparent, to 255, fully opaque |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1938 | |
| 1939 | ### Example |
| 1940 | |
| 1941 | <div><fiddle-embed name="9a85bb62fe3d877b18fb7f952c4fa7f7"> |
| 1942 | |
| 1943 | #### Example Output |
| 1944 | |
| 1945 | ~~~~ |
| 1946 | 255 == paint.getAlpha() |
| 1947 | ~~~~ |
| 1948 | |
| 1949 | </fiddle-embed></div> |
| 1950 | |
| 1951 | --- |
| 1952 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1953 | <a name="SkPaint_setAlpha"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1954 | ## setAlpha |
| 1955 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1956 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1957 | void setAlpha(U8CPU a) |
| 1958 | </pre> |
| 1959 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1960 | Replaces <a href="undocumented#Alpha">Alpha</a>, leaving <a href="undocumented#RGB">Color RGB</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1961 | unchanged. An out of range value triggers an assert in the debug |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1962 | build. <a href="#SkPaint_setAlpha_a">a</a> is <a href="#SkPaint_setAlpha_a">a</a> value from zero to 255. |
| 1963 | <a href="#SkPaint_setAlpha_a">a</a> set to zero makes <a href="undocumented#Color">Color</a> fully transparent; <a href="#SkPaint_setAlpha_a">a</a> set to 255 makes <a href="undocumented#Color">Color</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1964 | fully opaque. |
| 1965 | |
| 1966 | ### Parameters |
| 1967 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1968 | <table> <tr> <td><a name="SkPaint_setAlpha_a"> <code><strong>a </strong></code> </a></td> <td> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1969 | <a href="undocumented#Alpha">Alpha</a> component of <a href="undocumented#Color">Color</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1970 | </tr> |
| 1971 | </table> |
| 1972 | |
| 1973 | ### Example |
| 1974 | |
| 1975 | <div><fiddle-embed name="6ddc0360512dfb9947e75c17e6a8103d"> |
| 1976 | |
| 1977 | #### Example Output |
| 1978 | |
| 1979 | ~~~~ |
| 1980 | 0x44112233 == paint.getColor() |
| 1981 | ~~~~ |
| 1982 | |
| 1983 | </fiddle-embed></div> |
| 1984 | |
| 1985 | --- |
| 1986 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1987 | <a name="SkPaint_setARGB"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1988 | ## setARGB |
| 1989 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1990 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1991 | void setARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b) |
| 1992 | </pre> |
| 1993 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1994 | Sets <a href="undocumented#Color">Color</a> used when drawing solid fills. The color components range from 0 to 255. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 1995 | The color is <a href="undocumented#Unpremultiply">Unpremultiplied</a>; <a href="undocumented#Alpha">Alpha</a> sets the transparency independent of <a href="undocumented#RGB">Color RGB</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1996 | |
| 1997 | ### Parameters |
| 1998 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1999 | <table> <tr> <td><a name="SkPaint_setARGB_a"> <code><strong>a </strong></code> </a></td> <td> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2000 | amount of <a href="undocumented#Alpha">Color Alpha</a>, from fully transparent (0) to fully opaque (255)</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2001 | </tr> <tr> <td><a name="SkPaint_setARGB_r"> <code><strong>r </strong></code> </a></td> <td> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2002 | amount of <a href="undocumented#RGB_Red">Color RGB Red</a>, from no red (0) to full red (255)</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2003 | </tr> <tr> <td><a name="SkPaint_setARGB_g"> <code><strong>g </strong></code> </a></td> <td> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2004 | amount of <a href="undocumented#RGB_Green">Color RGB Green</a>, from no green (0) to full green (255)</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2005 | </tr> <tr> <td><a name="SkPaint_setARGB_b"> <code><strong>b </strong></code> </a></td> <td> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2006 | amount of <a href="undocumented#RGB_Blue">Color RGB Blue</a>, from no blue (0) to full blue (255)</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2007 | </tr> |
| 2008 | </table> |
| 2009 | |
| 2010 | ### Example |
| 2011 | |
| 2012 | <div><fiddle-embed name="cb62e4755789ed32f7120dc55984959d"> |
| 2013 | |
| 2014 | #### Example Output |
| 2015 | |
| 2016 | ~~~~ |
| 2017 | transRed1 == transRed2 |
| 2018 | ~~~~ |
| 2019 | |
| 2020 | </fiddle-embed></div> |
| 2021 | |
| 2022 | ### See Also |
| 2023 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2024 | <a href="#SkPaint_setColor">setColor</a> <a href="undocumented#SkColorSetARGB">SkColorSetARGB</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2025 | |
| 2026 | --- |
| 2027 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2028 | ## <a name="Style"></a> Style |
| 2029 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2030 | <a href="#Style">Style</a> specifies if the geometry is filled, stroked, or both filled and stroked. |
| 2031 | Some shapes ignore <a href="#Style">Style</a> and are always drawn filled or stroked. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2032 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2033 | Set <a href="#Style">Style</a> to <a href="#SkPaint_kFill_Style">kFill Style</a> to fill the shape. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2034 | The fill covers the area inside the geometry for most shapes. |
| 2035 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2036 | Set <a href="#Style">Style</a> to <a href="#SkPaint_kStroke_Style">kStroke Style</a> to stroke the shape. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2037 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2038 | ## <a name="Style_Fill"></a> Style Fill |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2039 | |
| 2040 | ### See Also |
| 2041 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2042 | <a href="SkPath_Reference#Fill_Type">Path Fill Type</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2043 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2044 | ## <a name="Style_Stroke"></a> Style Stroke |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2045 | |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 2046 | The stroke covers the area described by following the shape edge with a pen or brush of |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2047 | <a href="#Stroke_Width">Stroke Width</a>. The area covered where the shape starts and stops is described by <a href="#Stroke_Cap">Stroke Cap</a>. |
| 2048 | The area covered where the shape turns a corner is described by <a href="#Stroke_Join">Stroke Join</a>. |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 2049 | The stroke is centered on the shape; it extends equally on either side of the shape edge. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2050 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2051 | As <a href="#Stroke_Width">Stroke Width</a> gets smaller, the drawn path frame is thinner. <a href="#Stroke_Width">Stroke Width</a> less than one |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2052 | may have gaps, and if <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a> is set, <a href="undocumented#Alpha">Color Alpha</a> will increase to visually decrease coverage. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2053 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2054 | ## <a name="Style_Hairline"></a> Style Hairline |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2055 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2056 | <a href="#Stroke_Width">Stroke Width</a> of zero has a special meaning and switches drawing to use <a href="#Style_Hairline">Hairline</a>. |
| 2057 | <a href="#Style_Hairline">Hairline</a> draws the thinnest continuous frame. If <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a> is clear, adjacent pixels |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2058 | flow horizontally, vertically,or diagonally. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2059 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2060 | <a href="SkPath_Reference#Path">Path</a> drawing with <a href="#Style_Hairline">Hairline</a> may hit the same pixel more than once. For instance, <a href="SkPath_Reference#Path">Path</a> containing |
| 2061 | two lines in one <a href="SkPath_Reference#Contour">Path Contour</a> will draw the corner point once, but may both lines may draw the adjacent |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2062 | pixel. If <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a> is set, transparency is applied twice, resulting in a darker pixel. Some |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2063 | GPU-backed implementations apply transparency at a later drawing stage, avoiding double hit pixels |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2064 | while stroking. |
| 2065 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2066 | ## <a name="SkPaint_Style"></a> Enum SkPaint::Style |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2067 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2068 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2069 | enum <a href="#SkPaint_Style">Style</a> { |
| 2070 | <a href="#SkPaint_kFill_Style">kFill Style</a>, |
| 2071 | <a href="#SkPaint_kStroke_Style">kStroke Style</a>, |
| 2072 | <a href="#SkPaint_kStrokeAndFill_Style">kStrokeAndFill Style</a>, |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2073 | }; |
| 2074 | </pre> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2075 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2076 | Set <a href="#SkPaint_Style">Style</a> to fill, stroke, or both fill and stroke geometry. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2077 | The stroke and fill |
| 2078 | share all paint attributes; for instance, they are drawn with the same color. |
| 2079 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2080 | Use <a href="#SkPaint_kStrokeAndFill_Style">kStrokeAndFill Style</a> to avoid hitting the same pixels twice with a stroke draw and |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2081 | a fill draw. |
| 2082 | |
| 2083 | ### Constants |
| 2084 | |
| 2085 | <table> |
| 2086 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2087 | <td><a name="SkPaint_kFill_Style"> <code><strong>SkPaint::kFill_Style </strong></code> </a></td><td>0</td><td>Set to fill geometry. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2088 | Applies to <a href="SkRect_Reference#Rect">Rect</a>, <a href="undocumented#Region">Region</a>, <a href="undocumented#Round_Rect">Round Rect</a>, <a href="undocumented#Circle">Circles</a>, <a href="undocumented#Oval">Ovals</a>, <a href="SkPath_Reference#Path">Path</a>, and <a href="undocumented#Text">Text</a>. |
| 2089 | <a href="SkBitmap_Reference#Bitmap">Bitmap</a>, <a href="SkImage_Reference#Image">Image</a>, <a href="undocumented#Patch">Patches</a>, <a href="undocumented#Region">Region</a>, <a href="undocumented#Sprite">Sprites</a>, and <a href="undocumented#Vertices">Vertices</a> are painted as if |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2090 | <a href="#SkPaint_kFill_Style">kFill Style</a> is set, and ignore the set <a href="#SkPaint_Style">Style</a>. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2091 | The <a href="SkPath_Reference#Fill_Type">Path Fill Type</a> specifies additional rules to fill the area outside the path edge, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2092 | and to create an unfilled hole inside the shape. |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2093 | <a href="#SkPaint_Style">Style</a> is set to <a href="#SkPaint_kFill_Style">kFill Style</a> by default. |
| 2094 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2095 | </tr> |
| 2096 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2097 | <td><a name="SkPaint_kStroke_Style"> <code><strong>SkPaint::kStroke_Style </strong></code> </a></td><td>1</td><td>Set to stroke geometry. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2098 | Applies to <a href="SkRect_Reference#Rect">Rect</a>, <a href="undocumented#Region">Region</a>, <a href="undocumented#Round_Rect">Round Rect</a>, <a href="undocumented#Arc">Arcs</a>, <a href="undocumented#Circle">Circles</a>, <a href="undocumented#Oval">Ovals</a>, <a href="SkPath_Reference#Path">Path</a>, and <a href="undocumented#Text">Text</a>. |
| 2099 | <a href="undocumented#Arc">Arcs</a>, <a href="undocumented#Line">Lines</a>, and points, are always drawn as if <a href="#SkPaint_kStroke_Style">kStroke Style</a> is set, |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2100 | and ignore the set <a href="#SkPaint_Style">Style</a>. |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2101 | The stroke construction is unaffected by the <a href="SkPath_Reference#Fill_Type">Path Fill Type</a>. |
| 2102 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2103 | </tr> |
| 2104 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2105 | <td><a name="SkPaint_kStrokeAndFill_Style"> <code><strong>SkPaint::kStrokeAndFill_Style </strong></code> </a></td><td>2</td><td>Set to stroke and fill geometry. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2106 | Applies to <a href="SkRect_Reference#Rect">Rect</a>, <a href="undocumented#Region">Region</a>, <a href="undocumented#Round_Rect">Round Rect</a>, <a href="undocumented#Circle">Circles</a>, <a href="undocumented#Oval">Ovals</a>, <a href="SkPath_Reference#Path">Path</a>, and <a href="undocumented#Text">Text</a>. |
| 2107 | <a href="SkPath_Reference#Path">Path</a> is treated as if it is set to <a href="SkPath_Reference#SkPath_kWinding_FillType">SkPath::kWinding FillType</a>, |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2108 | and the set <a href="SkPath_Reference#Fill_Type">Path Fill Type</a> is ignored. |
| 2109 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2110 | </tr> |
| 2111 | |
| 2112 | </table> |
| 2113 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2114 | ## <a name="SkPaint__anonymous"></a> Enum SkPaint::_anonymous |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2115 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2116 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2117 | enum { |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2118 | <a href="#SkPaint_kStyleCount">kStyleCount</a> = <a href="#SkPaint_kStrokeAndFill_Style">kStrokeAndFill Style</a> + 1, |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2119 | }; |
| 2120 | </pre> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2121 | |
| 2122 | ### Constants |
| 2123 | |
| 2124 | <table> |
| 2125 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2126 | <td><a name="SkPaint_kStyleCount"> <code><strong>SkPaint::kStyleCount </strong></code> </a></td><td>3</td><td>The number of different <a href="#SkPaint_Style">Style</a> values defined. |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2127 | May be used to verify that <a href="#SkPaint_Style">Style</a> is a legal value. |
| 2128 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2129 | </tr> |
| 2130 | |
| 2131 | </table> |
| 2132 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2133 | <a name="SkPaint_getStyle"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2134 | ## getStyle |
| 2135 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2136 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2137 | Style getStyle() const |
| 2138 | </pre> |
| 2139 | |
| 2140 | Whether the geometry is filled, stroked, or filled and stroked. |
| 2141 | |
| 2142 | ### Return Value |
| 2143 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2144 | one of:<a href="#SkPaint_kFill_Style">kFill Style</a>, <a href="#SkPaint_kStroke_Style">kStroke Style</a>, <a href="#SkPaint_kStrokeAndFill_Style">kStrokeAndFill Style</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2145 | |
| 2146 | ### Example |
| 2147 | |
| 2148 | <div><fiddle-embed name="1c5e18c3c0102d2dac86a78ba8c8ce01"> |
| 2149 | |
| 2150 | #### Example Output |
| 2151 | |
| 2152 | ~~~~ |
| 2153 | SkPaint::kFill_Style == paint.getStyle() |
| 2154 | ~~~~ |
| 2155 | |
| 2156 | </fiddle-embed></div> |
| 2157 | |
| 2158 | ### See Also |
| 2159 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2160 | <a href="#SkPaint_Style">Style</a> <a href="#SkPaint_setStyle">setStyle</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2161 | |
| 2162 | --- |
| 2163 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2164 | <a name="SkPaint_setStyle"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2165 | ## setStyle |
| 2166 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2167 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2168 | void setStyle(Style style) |
| 2169 | </pre> |
| 2170 | |
| 2171 | Sets whether the geometry is filled, stroked, or filled and stroked. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2172 | Has no effect if <a href="#SkPaint_setStyle_style">style</a> is not a legal <a href="#SkPaint_Style">Style</a> value. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2173 | |
| 2174 | ### Parameters |
| 2175 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2176 | <table> <tr> <td><a name="SkPaint_setStyle_style"> <code><strong>style </strong></code> </a></td> <td> |
| 2177 | one of: <a href="#SkPaint_kFill_Style">kFill Style</a>, <a href="#SkPaint_kStroke_Style">kStroke Style</a>, <a href="#SkPaint_kStrokeAndFill_Style">kStrokeAndFill Style</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2178 | </tr> |
| 2179 | </table> |
| 2180 | |
| 2181 | ### Example |
| 2182 | |
| 2183 | <div><fiddle-embed name="c7bb6248e4735b8d1a32d02fba40d344"></fiddle-embed></div> |
| 2184 | |
| 2185 | ### See Also |
| 2186 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2187 | <a href="#SkPaint_Style">Style</a> <a href="#SkPaint_getStyle">getStyle</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2188 | |
| 2189 | --- |
| 2190 | |
| 2191 | ### See Also |
| 2192 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2193 | <a href="SkPath_Reference#Fill_Type">Path Fill Type</a> <a href="undocumented#Path_Effect">Path Effect</a> <a href="#Style_Fill">Style Fill</a> <a href="#Style_Stroke">Style Stroke</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2194 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2195 | ## <a name="Stroke_Width"></a> Stroke Width |
| 2196 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2197 | <a href="#Stroke_Width">Stroke Width</a> sets the width for stroking. The width is the thickness |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2198 | of the stroke perpendicular to the path direction when the paint style is |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2199 | set to <a href="#SkPaint_kStroke_Style">kStroke Style</a> or <a href="#SkPaint_kStrokeAndFill_Style">kStrokeAndFill Style</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2200 | |
| 2201 | When width is greater than zero, the stroke encompasses as many pixels partially |
| 2202 | or fully as needed. When the width equals zero, the paint enables hairlines; |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2203 | the stroke is always one pixel wide. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2204 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2205 | The stroke dimensions are scaled by the canvas matrix, but <a href="#Style_Hairline">Hairline</a> stroke |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2206 | remains one pixel wide regardless of scaling. |
| 2207 | |
| 2208 | The default width for the paint is zero. |
| 2209 | |
| 2210 | ### Example |
| 2211 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2212 | <div><fiddle-embed name="01e3e08a3022a351628ff54e84887756" gpu="true"><div>The pixels hit to represent thin lines vary with the angle of the |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2213 | line and the platform implementation. |
| 2214 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2215 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2216 | <a name="SkPaint_getStrokeWidth"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2217 | ## getStrokeWidth |
| 2218 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2219 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2220 | SkScalar getStrokeWidth() const |
| 2221 | </pre> |
| 2222 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2223 | Returns the thickness of the pen used by <a href="#Paint">Paint</a> to |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2224 | outline the shape. |
| 2225 | |
| 2226 | ### Return Value |
| 2227 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2228 | zero for <a href="#Style_Hairline">Hairline</a>, greater than zero for pen thickness |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2229 | |
| 2230 | ### Example |
| 2231 | |
| 2232 | <div><fiddle-embed name="99aa73f64df8bbf06e656cd891a81b9e"> |
| 2233 | |
| 2234 | #### Example Output |
| 2235 | |
| 2236 | ~~~~ |
| 2237 | 0 == paint.getStrokeWidth() |
| 2238 | ~~~~ |
| 2239 | |
| 2240 | </fiddle-embed></div> |
| 2241 | |
| 2242 | --- |
| 2243 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2244 | <a name="SkPaint_setStrokeWidth"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2245 | ## setStrokeWidth |
| 2246 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2247 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2248 | void setStrokeWidth(SkScalar width) |
| 2249 | </pre> |
| 2250 | |
| 2251 | Sets the thickness of the pen used by the paint to |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2252 | outline the shape. |
| 2253 | Has no effect if <a href="#SkPaint_setStrokeWidth_width">width</a> is less than zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2254 | |
| 2255 | ### Parameters |
| 2256 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2257 | <table> <tr> <td><a name="SkPaint_setStrokeWidth_width"> <code><strong>width </strong></code> </a></td> <td> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2258 | zero thickness for <a href="#Style_Hairline">Hairline</a>; greater than zero for pen thickness</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2259 | </tr> |
| 2260 | </table> |
| 2261 | |
| 2262 | ### Example |
| 2263 | |
| 2264 | <div><fiddle-embed name="0c4446c0870b5c7b5a2efe77ff92afb8"> |
| 2265 | |
| 2266 | #### Example Output |
| 2267 | |
| 2268 | ~~~~ |
| 2269 | 5 == paint.getStrokeWidth() |
| 2270 | ~~~~ |
| 2271 | |
| 2272 | </fiddle-embed></div> |
| 2273 | |
| 2274 | --- |
| 2275 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2276 | ## <a name="Miter_Limit"></a> Miter Limit |
| 2277 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2278 | <a href="#Miter_Limit">Miter Limit</a> specifies the maximum miter length, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2279 | relative to the stroke width. |
| 2280 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2281 | <a href="#Miter_Limit">Miter Limit</a> is used when the <a href="#Stroke_Join">Stroke Join</a> |
| 2282 | is set to <a href="#SkPaint_kMiter_Join">kMiter Join</a>, and the <a href="#SkPaint_Style">Style</a> is either <a href="#SkPaint_kStroke_Style">kStroke Style</a> |
| 2283 | or <a href="#SkPaint_kStrokeAndFill_Style">kStrokeAndFill Style</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2284 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2285 | If the miter at a corner exceeds this limit, <a href="#SkPaint_kMiter_Join">kMiter Join</a> |
| 2286 | is replaced with <a href="#SkPaint_kBevel_Join">kBevel Join</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2287 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2288 | <a href="#Miter_Limit">Miter Limit</a> can be computed from the corner angle: |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2289 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2290 | miter limit = 1 / sin ( angle / 2 )<a href="#Miter_Limit">Miter Limit</a> default value is 4. |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2291 | The default may be changed at compile time by setting <a href="undocumented#SkPaintDefaults_MiterLimit">SkPaintDefaults MiterLimit</a> |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2292 | in "SkUserConfig.h" or as a define supplied by the build environment. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2293 | |
| 2294 | Here are some miter limits and the angles that triggers them. |
| 2295 | |
| 2296 | | miter limit | angle in degrees | |
| 2297 | | --- | --- | |
| 2298 | | 10 | 11.48 | |
| 2299 | | 9 | 12.76 | |
| 2300 | | 8 | 14.36 | |
| 2301 | | 7 | 16.43 | |
| 2302 | | 6 | 19.19 | |
| 2303 | | 5 | 23.07 | |
| 2304 | | 4 | 28.96 | |
| 2305 | | 3 | 38.94 | |
| 2306 | | 2 | 60 | |
| 2307 | | 1 | 180 | |
| 2308 | |
| 2309 | ### Example |
| 2310 | |
| 2311 | <div><fiddle-embed name="5de2de0f00354e59074a9bb1a42d5a63"><div>This example draws a stroked corner and the miter length beneath. |
| 2312 | When the miter limit is decreased slightly, the miter join is replaced |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2313 | by a bevel join. |
| 2314 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2315 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2316 | <a name="SkPaint_getStrokeMiter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2317 | ## getStrokeMiter |
| 2318 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2319 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2320 | SkScalar getStrokeMiter() const |
| 2321 | </pre> |
| 2322 | |
| 2323 | The limit at which a sharp corner is drawn beveled. |
| 2324 | |
| 2325 | ### Return Value |
| 2326 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2327 | zero and greater <a href="#Miter_Limit">Miter Limit</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2328 | |
| 2329 | ### Example |
| 2330 | |
| 2331 | <div><fiddle-embed name="50da74a43b725f07a914df588c867d36"> |
| 2332 | |
| 2333 | #### Example Output |
| 2334 | |
| 2335 | ~~~~ |
| 2336 | default miter limit == 4 |
| 2337 | ~~~~ |
| 2338 | |
| 2339 | </fiddle-embed></div> |
| 2340 | |
| 2341 | ### See Also |
| 2342 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2343 | <a href="#Miter_Limit">Miter Limit</a> <a href="#SkPaint_setStrokeMiter">setStrokeMiter</a> <a href="#SkPaint_Join">Join</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2344 | |
| 2345 | --- |
| 2346 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2347 | <a name="SkPaint_setStrokeMiter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2348 | ## setStrokeMiter |
| 2349 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2350 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2351 | void setStrokeMiter(SkScalar miter) |
| 2352 | </pre> |
| 2353 | |
| 2354 | The limit at which a sharp corner is drawn beveled. |
| 2355 | Valid values are zero and greater. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2356 | Has no effect if <a href="#SkPaint_setStrokeMiter_miter">miter</a> is less than zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2357 | |
| 2358 | ### Parameters |
| 2359 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2360 | <table> <tr> <td><a name="SkPaint_setStrokeMiter_miter"> <code><strong>miter </strong></code> </a></td> <td> |
| 2361 | zero and greater <a href="#Miter_Limit">Miter Limit</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2362 | </tr> |
| 2363 | </table> |
| 2364 | |
| 2365 | ### Example |
| 2366 | |
| 2367 | <div><fiddle-embed name="700b284dbc97785c6a9c9636088713ad"> |
| 2368 | |
| 2369 | #### Example Output |
| 2370 | |
| 2371 | ~~~~ |
| 2372 | default miter limit == 8 |
| 2373 | ~~~~ |
| 2374 | |
| 2375 | </fiddle-embed></div> |
| 2376 | |
| 2377 | ### See Also |
| 2378 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2379 | <a href="#Miter_Limit">Miter Limit</a> <a href="#SkPaint_getStrokeMiter">getStrokeMiter</a> <a href="#SkPaint_Join">Join</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2380 | |
| 2381 | --- |
| 2382 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2383 | ## <a name="Stroke_Cap"></a> Stroke Cap |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2384 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2385 | ## <a name="SkPaint_Cap"></a> Enum SkPaint::Cap |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2386 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2387 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2388 | enum <a href="#SkPaint_Cap">Cap</a> { |
| 2389 | <a href="#SkPaint_kButt_Cap">kButt Cap</a>, |
| 2390 | <a href="#SkPaint_kRound_Cap">kRound Cap</a>, |
| 2391 | <a href="#SkPaint_kSquare_Cap">kSquare Cap</a>, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2392 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2393 | <a href="#SkPaint_kLast_Cap">kLast Cap</a> = <a href="#SkPaint_kSquare_Cap">kSquare Cap</a>, |
| 2394 | <a href="#SkPaint_kDefault_Cap">kDefault Cap</a> = <a href="#SkPaint_kButt_Cap">kButt Cap</a>, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2395 | }; |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 2396 | |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2397 | static constexpr int <a href="#SkPaint_kCapCount">kCapCount</a> = <a href="#SkPaint_kLast_Cap">kLast Cap</a> + 1; |
| 2398 | </pre> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2399 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2400 | <a href="#Stroke_Cap">Stroke Cap</a> draws at the beginning and end of an open <a href="SkPath_Reference#Contour">Path Contour</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2401 | |
| 2402 | ### Constants |
| 2403 | |
| 2404 | <table> |
| 2405 | <tr> |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2406 | <td><a name="SkPaint_kButt_Cap"> <code><strong>SkPaint::kButt_Cap </strong></code> </a></td><td>0</td><td>Does not extend the stroke past the beginning or the end. |
| 2407 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2408 | </tr> |
| 2409 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2410 | <td><a name="SkPaint_kRound_Cap"> <code><strong>SkPaint::kRound_Cap </strong></code> </a></td><td>1</td><td>Adds a circle with a diameter equal to <a href="#Stroke_Width">Stroke Width</a> at the beginning |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2411 | and end. |
| 2412 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2413 | </tr> |
| 2414 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2415 | <td><a name="SkPaint_kSquare_Cap"> <code><strong>SkPaint::kSquare_Cap </strong></code> </a></td><td>2</td><td>Adds a square with sides equal to <a href="#Stroke_Width">Stroke Width</a> at the beginning |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2416 | and end. The square sides are parallel to the initial and final direction |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2417 | of the stroke. |
| 2418 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2419 | </tr> |
| 2420 | <tr> |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2421 | <td><a name="SkPaint_kLast_Cap"> <code><strong>SkPaint::kLast_Cap </strong></code> </a></td><td>2</td><td>Equivalent to the largest value for <a href="#Stroke_Cap">Stroke Cap</a>. |
| 2422 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2423 | </tr> |
| 2424 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2425 | <td><a name="SkPaint_kDefault_Cap"> <code><strong>SkPaint::kDefault_Cap </strong></code> </a></td><td>0</td><td>Equivalent to <a href="#SkPaint_kButt_Cap">kButt Cap</a>. |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2426 | <a href="#Stroke_Cap">Stroke Cap</a> is set to <a href="#SkPaint_kButt_Cap">kButt Cap</a> by default. |
| 2427 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2428 | </tr> |
| 2429 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2430 | <td><a name="SkPaint_kCapCount"> <code><strong>SkPaint::kCapCount </strong></code> </a></td><td>3</td><td>The number of different <a href="#Stroke_Cap">Stroke Cap</a> values defined. |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2431 | May be used to verify that <a href="#Stroke_Cap">Stroke Cap</a> is a legal value. |
| 2432 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2433 | </tr> |
| 2434 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2435 | Stroke describes the area covered by a pen of <a href="#Stroke_Width">Stroke Width</a> as it |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2436 | follows the <a href="SkPath_Reference#Contour">Path Contour</a>, moving parallel to the contour direction. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2437 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2438 | If the <a href="SkPath_Reference#Contour">Path Contour</a> is not terminated by <a href="SkPath_Reference#SkPath_kClose_Verb">SkPath::kClose Verb</a>, the contour has a |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2439 | visible beginning and end. |
| 2440 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2441 | <a href="SkPath_Reference#Contour">Path Contour</a> may start and end at the same point; defining <a href="SkPath_Reference#Contour_Zero_Length">Zero Length Contour</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2442 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2443 | <a href="#SkPaint_kButt_Cap">kButt Cap</a> and <a href="SkPath_Reference#Contour_Zero_Length">Zero Length Contour</a> is not drawn. |
| 2444 | <a href="#SkPaint_kRound_Cap">kRound Cap</a> and <a href="SkPath_Reference#Contour_Zero_Length">Zero Length Contour</a> draws a circle of diameter <a href="#Stroke_Width">Stroke Width</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2445 | at the contour point. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2446 | <a href="#SkPaint_kSquare_Cap">kSquare Cap</a> and <a href="SkPath_Reference#Contour_Zero_Length">Zero Length Contour</a> draws an upright square with a side of |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2447 | <a href="#Stroke_Width">Stroke Width</a> at the contour point. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2448 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2449 | <a href="#Stroke_Cap">Stroke Cap</a> is <a href="#SkPaint_kButt_Cap">kButt Cap</a> by default. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2450 | |
| 2451 | </table> |
| 2452 | |
| 2453 | ### Example |
| 2454 | |
Cary Clark | 2ade997 | 2017-11-02 17:49:34 -0400 | [diff] [blame] | 2455 | <div><fiddle-embed name="2bffb6384cc20077e632e7d01da045ca"></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2456 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2457 | <a name="SkPaint_getStrokeCap"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2458 | ## getStrokeCap |
| 2459 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2460 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2461 | Cap getStrokeCap() const |
| 2462 | </pre> |
| 2463 | |
| 2464 | The geometry drawn at the beginning and end of strokes. |
| 2465 | |
| 2466 | ### Return Value |
| 2467 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2468 | one of: <a href="#SkPaint_kButt_Cap">kButt Cap</a>, <a href="#SkPaint_kRound_Cap">kRound Cap</a>, <a href="#SkPaint_kSquare_Cap">kSquare Cap</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2469 | |
| 2470 | ### Example |
| 2471 | |
| 2472 | <div><fiddle-embed name="aabf9baee8e026fae36fca30e955512b"> |
| 2473 | |
| 2474 | #### Example Output |
| 2475 | |
| 2476 | ~~~~ |
| 2477 | kButt_Cap == default stroke cap |
| 2478 | ~~~~ |
| 2479 | |
| 2480 | </fiddle-embed></div> |
| 2481 | |
| 2482 | ### See Also |
| 2483 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2484 | <a href="#Stroke_Cap">Stroke Cap</a> <a href="#SkPaint_setStrokeCap">setStrokeCap</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2485 | |
| 2486 | --- |
| 2487 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2488 | <a name="SkPaint_setStrokeCap"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2489 | ## setStrokeCap |
| 2490 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2491 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2492 | void setStrokeCap(Cap cap) |
| 2493 | </pre> |
| 2494 | |
| 2495 | The geometry drawn at the beginning and end of strokes. |
| 2496 | |
| 2497 | ### Parameters |
| 2498 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2499 | <table> <tr> <td><a name="SkPaint_setStrokeCap_cap"> <code><strong>cap </strong></code> </a></td> <td> |
| 2500 | one of: <a href="#SkPaint_kButt_Cap">kButt Cap</a>, <a href="#SkPaint_kRound_Cap">kRound Cap</a>, <a href="#SkPaint_kSquare_Cap">kSquare Cap</a>; |
| 2501 | has no effect if <a href="#SkPaint_setStrokeCap_cap">cap</a> is not valid</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2502 | </tr> |
| 2503 | </table> |
| 2504 | |
| 2505 | ### Example |
| 2506 | |
| 2507 | <div><fiddle-embed name="de83fbd848a4625345b4b87a6e55d98a"> |
| 2508 | |
| 2509 | #### Example Output |
| 2510 | |
| 2511 | ~~~~ |
| 2512 | kRound_Cap == paint.getStrokeCap() |
| 2513 | ~~~~ |
| 2514 | |
| 2515 | </fiddle-embed></div> |
| 2516 | |
| 2517 | ### See Also |
| 2518 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2519 | <a href="#Stroke_Cap">Stroke Cap</a> <a href="#SkPaint_getStrokeCap">getStrokeCap</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2520 | |
| 2521 | --- |
| 2522 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2523 | ## <a name="Stroke_Join"></a> Stroke Join |
| 2524 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2525 | <a href="#Stroke_Join">Stroke Join</a> draws at the sharp corners of an open or closed <a href="SkPath_Reference#Contour">Path Contour</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2526 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2527 | Stroke describes the area covered by a pen of <a href="#Stroke_Width">Stroke Width</a> as it |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2528 | follows the <a href="SkPath_Reference#Contour">Path Contour</a>, moving parallel to the contour direction. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2529 | |
| 2530 | If the contour direction changes abruptly, because the tangent direction leading |
| 2531 | to the end of a curve within the contour does not match the tangent direction of |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2532 | the following curve, the pair of curves meet at <a href="#Stroke_Join">Stroke Join</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2533 | |
| 2534 | ### Example |
| 2535 | |
Cary Clark | 2ade997 | 2017-11-02 17:49:34 -0400 | [diff] [blame] | 2536 | <div><fiddle-embed name="917c44b504d3f9308571fd3835d90a0d"></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2537 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2538 | ## <a name="SkPaint_Join"></a> Enum SkPaint::Join |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2539 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2540 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2541 | enum <a href="#SkPaint_Join">Join</a> { |
| 2542 | <a href="#SkPaint_kMiter_Join">kMiter Join</a>, |
| 2543 | <a href="#SkPaint_kRound_Join">kRound Join</a>, |
| 2544 | <a href="#SkPaint_kBevel_Join">kBevel Join</a>, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2545 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2546 | <a href="#SkPaint_kLast_Join">kLast Join</a> = <a href="#SkPaint_kBevel_Join">kBevel Join</a>, |
| 2547 | <a href="#SkPaint_kDefault_Join">kDefault Join</a> = <a href="#SkPaint_kMiter_Join">kMiter Join</a>, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2548 | }; |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 2549 | |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2550 | static constexpr int <a href="#SkPaint_kJoinCount">kJoinCount</a> = <a href="#SkPaint_kLast_Join">kLast Join</a> + 1; |
| 2551 | </pre> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2552 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2553 | <a href="#SkPaint_Join">Join</a> specifies how corners are drawn when a shape is stroked. <a href="#SkPaint_Join">Join</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2554 | affects the four corners of a stroked rectangle, and the connected segments in a |
| 2555 | stroked path. |
| 2556 | |
| 2557 | Choose miter join to draw sharp corners. Choose round join to draw a circle with a |
| 2558 | radius equal to the stroke width on top of the corner. Choose bevel join to minimally |
| 2559 | connect the thick strokes. |
| 2560 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2561 | The fill path constructed to describe the stroked path respects the join setting but may |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2562 | not contain the actual join. For instance, a fill path constructed with round joins does |
| 2563 | not necessarily include circles at each connected segment. |
| 2564 | |
| 2565 | ### Constants |
| 2566 | |
| 2567 | <table> |
| 2568 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2569 | <td><a name="SkPaint_kMiter_Join"> <code><strong>SkPaint::kMiter_Join </strong></code> </a></td><td>0</td><td>Extends the outside corner to the extent allowed by <a href="#Miter_Limit">Miter Limit</a>. |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2570 | If the extension exceeds <a href="#Miter_Limit">Miter Limit</a>, <a href="#SkPaint_kBevel_Join">kBevel Join</a> is used instead. |
| 2571 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2572 | </tr> |
| 2573 | <tr> |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2574 | <td><a name="SkPaint_kRound_Join"> <code><strong>SkPaint::kRound_Join </strong></code> </a></td><td>1</td><td>Adds a circle with a diameter of <a href="#Stroke_Width">Stroke Width</a> at the sharp corner. |
| 2575 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2576 | </tr> |
| 2577 | <tr> |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2578 | <td><a name="SkPaint_kBevel_Join"> <code><strong>SkPaint::kBevel_Join </strong></code> </a></td><td>2</td><td>Connects the outside edges of the sharp corner. |
| 2579 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2580 | </tr> |
| 2581 | <tr> |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2582 | <td><a name="SkPaint_kLast_Join"> <code><strong>SkPaint::kLast_Join </strong></code> </a></td><td>2</td><td>Equivalent to the largest value for <a href="#Stroke_Join">Stroke Join</a>. |
| 2583 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2584 | </tr> |
| 2585 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2586 | <td><a name="SkPaint_kDefault_Join"> <code><strong>SkPaint::kDefault_Join </strong></code> </a></td><td>1</td><td>Equivalent to <a href="#SkPaint_kMiter_Join">kMiter Join</a>. |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2587 | <a href="#Stroke_Join">Stroke Join</a> is set to <a href="#SkPaint_kMiter_Join">kMiter Join</a> by default. |
| 2588 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2589 | </tr> |
| 2590 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2591 | <td><a name="SkPaint_kJoinCount"> <code><strong>SkPaint::kJoinCount </strong></code> </a></td><td>3</td><td>The number of different <a href="#Stroke_Join">Stroke Join</a> values defined. |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2592 | May be used to verify that <a href="#Stroke_Join">Stroke Join</a> is a legal value. |
| 2593 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2594 | </tr> |
| 2595 | </table> |
| 2596 | |
| 2597 | ### Example |
| 2598 | |
| 2599 | <div><fiddle-embed name="3b1aebacc21c1836a52876b9b0b3905e"></fiddle-embed></div> |
| 2600 | |
| 2601 | ### See Also |
| 2602 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2603 | <a href="#SkPaint_setStrokeJoin">setStrokeJoin</a> <a href="#SkPaint_getStrokeJoin">getStrokeJoin</a> <a href="#SkPaint_setStrokeMiter">setStrokeMiter</a> <a href="#SkPaint_getStrokeMiter">getStrokeMiter</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2604 | |
| 2605 | |
| 2606 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2607 | <a name="SkPaint_getStrokeJoin"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2608 | ## getStrokeJoin |
| 2609 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2610 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2611 | Join getStrokeJoin() const |
| 2612 | </pre> |
| 2613 | |
Cary Clark | 0c5f546 | 2017-12-15 11:21:51 -0500 | [diff] [blame] | 2614 | The geometry drawn at the corners of strokes. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2615 | |
| 2616 | ### Return Value |
| 2617 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2618 | one of: <a href="#SkPaint_kMiter_Join">kMiter Join</a>, <a href="#SkPaint_kRound_Join">kRound Join</a>, <a href="#SkPaint_kBevel_Join">kBevel Join</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2619 | |
| 2620 | ### Example |
| 2621 | |
| 2622 | <div><fiddle-embed name="31bf751d0a8ddf176b871810820d8199"> |
| 2623 | |
| 2624 | #### Example Output |
| 2625 | |
| 2626 | ~~~~ |
| 2627 | kMiter_Join == default stroke join |
| 2628 | ~~~~ |
| 2629 | |
| 2630 | </fiddle-embed></div> |
| 2631 | |
| 2632 | ### See Also |
| 2633 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2634 | <a href="#Stroke_Join">Stroke Join</a> <a href="#SkPaint_setStrokeJoin">setStrokeJoin</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2635 | |
| 2636 | --- |
| 2637 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2638 | <a name="SkPaint_setStrokeJoin"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2639 | ## setStrokeJoin |
| 2640 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2641 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2642 | void setStrokeJoin(Join join) |
| 2643 | </pre> |
| 2644 | |
Cary Clark | 0c5f546 | 2017-12-15 11:21:51 -0500 | [diff] [blame] | 2645 | The geometry drawn at the corners of strokes. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2646 | |
| 2647 | ### Parameters |
| 2648 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2649 | <table> <tr> <td><a name="SkPaint_setStrokeJoin_join"> <code><strong>join </strong></code> </a></td> <td> |
| 2650 | one of: <a href="#SkPaint_kMiter_Join">kMiter Join</a>, <a href="#SkPaint_kRound_Join">kRound Join</a>, <a href="#SkPaint_kBevel_Join">kBevel Join</a>; |
Cary Clark | bad5ad7 | 2017-08-03 17:14:08 -0400 | [diff] [blame] | 2651 | otherwise, has no effect</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2652 | </tr> |
| 2653 | </table> |
| 2654 | |
| 2655 | ### Example |
| 2656 | |
| 2657 | <div><fiddle-embed name="48d963ad4286eddf680f9c511eb6da91"> |
| 2658 | |
| 2659 | #### Example Output |
| 2660 | |
| 2661 | ~~~~ |
| 2662 | kMiter_Join == paint.getStrokeJoin() |
| 2663 | ~~~~ |
| 2664 | |
| 2665 | </fiddle-embed></div> |
| 2666 | |
| 2667 | ### See Also |
| 2668 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2669 | <a href="#Stroke_Join">Stroke Join</a> <a href="#SkPaint_getStrokeJoin">getStrokeJoin</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2670 | |
| 2671 | --- |
| 2672 | |
| 2673 | ### See Also |
| 2674 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2675 | <a href="#Miter_Limit">Miter Limit</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2676 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2677 | ## <a name="Fill_Path"></a> Fill Path |
| 2678 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2679 | <a href="#Fill_Path">Fill Path</a> creates a <a href="SkPath_Reference#Path">Path</a> by applying the <a href="undocumented#Path_Effect">Path Effect</a>, followed by the <a href="#Style_Stroke">Style Stroke</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2680 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2681 | If <a href="#Paint">Paint</a> contains <a href="undocumented#Path_Effect">Path Effect</a>, <a href="undocumented#Path_Effect">Path Effect</a> operates on the source <a href="SkPath_Reference#Path">Path</a>; the result |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2682 | replaces the destination <a href="SkPath_Reference#Path">Path</a>. Otherwise, the source <a href="SkPath_Reference#Path">Path</a> is replaces the |
| 2683 | destination <a href="SkPath_Reference#Path">Path</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2684 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2685 | Fill <a href="SkPath_Reference#Path">Path</a> can request the <a href="undocumented#Path_Effect">Path Effect</a> to restrict to a culling rectangle, but |
| 2686 | the <a href="undocumented#Path_Effect">Path Effect</a> is not required to do so. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2687 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2688 | If <a href="#SkPaint_Style">Style</a> is <a href="#SkPaint_kStroke_Style">kStroke Style</a> or <a href="#SkPaint_kStrokeAndFill_Style">kStrokeAndFill Style</a>, |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2689 | and <a href="#Stroke_Width">Stroke Width</a> is greater than zero, the <a href="#Stroke_Width">Stroke Width</a>, <a href="#Stroke_Cap">Stroke Cap</a>, <a href="#Stroke_Join">Stroke Join</a>, |
| 2690 | and <a href="#Miter_Limit">Miter Limit</a> operate on the destination <a href="SkPath_Reference#Path">Path</a>, replacing it. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2691 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2692 | Fill <a href="SkPath_Reference#Path">Path</a> can specify the precision used by <a href="#Stroke_Width">Stroke Width</a> to approximate the stroke geometry. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2693 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2694 | If the <a href="#SkPaint_Style">Style</a> is <a href="#SkPaint_kStroke_Style">kStroke Style</a> and the <a href="#Stroke_Width">Stroke Width</a> is zero, <a href="#SkPaint_getFillPath">getFillPath</a> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2695 | returns false since <a href="#Style_Hairline">Hairline</a> has no filled equivalent. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2696 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2697 | <a name="SkPaint_getFillPath"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2698 | ## getFillPath |
| 2699 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2700 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
| 2701 | bool getFillPath(const SkPath& src, SkPath* dst, const SkRect* cullRect, SkScalar resScale = 1) const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2702 | </pre> |
| 2703 | |
| 2704 | The filled equivalent of the stroked path. |
| 2705 | |
| 2706 | ### Parameters |
| 2707 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2708 | <table> <tr> <td><a name="SkPaint_getFillPath_src"> <code><strong>src </strong></code> </a></td> <td> |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2709 | <a href="SkPath_Reference#Path">Path</a> read to create a filled version</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2710 | </tr> <tr> <td><a name="SkPaint_getFillPath_dst"> <code><strong>dst </strong></code> </a></td> <td> |
| 2711 | resulting <a href="SkPath_Reference#Path">Path</a>; may be the same as <a href="#SkPaint_getFillPath_src">src</a>, but may not be nullptr</td> |
| 2712 | </tr> <tr> <td><a name="SkPaint_getFillPath_cullRect"> <code><strong>cullRect </strong></code> </a></td> <td> |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2713 | optional limit passed to <a href="undocumented#Path_Effect">Path Effect</a></td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2714 | </tr> <tr> <td><a name="SkPaint_getFillPath_resScale"> <code><strong>resScale </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2715 | if > 1, increase precision, else if (0 < res < 1) reduce precision |
| 2716 | to favor speed and size</td> |
| 2717 | </tr> |
| 2718 | </table> |
| 2719 | |
| 2720 | ### Return Value |
| 2721 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2722 | true if the path represents <a href="#Style_Fill">Style Fill</a>, or false if it represents <a href="#Style_Hairline">Hairline</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2723 | |
| 2724 | ### Example |
| 2725 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2726 | <div><fiddle-embed name="cedd6233848198e1fca4d1e14816baaf"><div>A very small <a href="SkPath_Reference#Quad">Quad</a> stroke is turned into a filled path with increasing levels of precision. |
| 2727 | At the lowest precision, the <a href="SkPath_Reference#Quad">Quad</a> stroke is approximated by a rectangle. |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 2728 | At the highest precision, the filled path has high fidelity compared to the original stroke. |
| 2729 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2730 | |
| 2731 | --- |
| 2732 | |
Cary Clark | 2dc84ad | 2018-01-26 12:56:22 -0500 | [diff] [blame] | 2733 | <a name="SkPaint_getFillPath_2"></a> |
| 2734 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2735 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2736 | bool getFillPath(const SkPath& src, SkPath* dst) const |
| 2737 | </pre> |
| 2738 | |
| 2739 | The filled equivalent of the stroked path. |
| 2740 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2741 | Replaces <a href="#SkPaint_getFillPath_2_dst">dst</a> with the <a href="#SkPaint_getFillPath_2_src">src</a> path modified by <a href="undocumented#Path_Effect">Path Effect</a> and <a href="#Style_Stroke">Style Stroke</a>. |
| 2742 | <a href="undocumented#Path_Effect">Path Effect</a>, if any, is not culled. <a href="#Stroke_Width">Stroke Width</a> is created with default precision. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2743 | |
| 2744 | ### Parameters |
| 2745 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2746 | <table> <tr> <td><a name="SkPaint_getFillPath_2_src"> <code><strong>src </strong></code> </a></td> <td> |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2747 | <a href="SkPath_Reference#Path">Path</a> read to create a filled version</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2748 | </tr> <tr> <td><a name="SkPaint_getFillPath_2_dst"> <code><strong>dst </strong></code> </a></td> <td> |
| 2749 | resulting <a href="SkPath_Reference#Path">Path</a> <a href="#SkPaint_getFillPath_2_dst">dst</a> may be the same as <a href="#SkPaint_getFillPath_2_src">src</a>, but may not be nullptr</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2750 | </tr> |
| 2751 | </table> |
| 2752 | |
| 2753 | ### Return Value |
| 2754 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2755 | true if the path represents <a href="#Style_Fill">Style Fill</a>, or false if it represents <a href="#Style_Hairline">Hairline</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2756 | |
| 2757 | ### Example |
| 2758 | |
| 2759 | <div><fiddle-embed name="e6d8ca0cc17e0b475bd54dd995825468"></fiddle-embed></div> |
| 2760 | |
| 2761 | --- |
| 2762 | |
| 2763 | ### See Also |
| 2764 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2765 | <a href="#Style_Stroke">Style Stroke</a> <a href="#Stroke_Width">Stroke Width</a> <a href="undocumented#Path_Effect">Path Effect</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2766 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2767 | ## <a name="Shader_Methods"></a> Shader Methods |
| 2768 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2769 | <a href="undocumented#Shader">Shader</a> defines the colors used when drawing a shape. |
| 2770 | <a href="undocumented#Shader">Shader</a> may be an image, a gradient, or a computed fill. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2771 | If <a href="#Paint">Paint</a> has no <a href="undocumented#Shader">Shader</a>, then <a href="undocumented#Color">Color</a> fills the shape. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2772 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2773 | <a href="undocumented#Shader">Shader</a> is modulated by <a href="undocumented#Alpha">Color Alpha</a> component of <a href="undocumented#Color">Color</a>. |
| 2774 | If <a href="undocumented#Shader">Shader</a> object defines only <a href="undocumented#Alpha">Color Alpha</a>, then <a href="undocumented#Color">Color</a> modulated by <a href="undocumented#Alpha">Color Alpha</a> describes |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2775 | the fill. |
| 2776 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2777 | The drawn transparency can be modified without altering <a href="undocumented#Shader">Shader</a>, by changing <a href="undocumented#Alpha">Color Alpha</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2778 | |
| 2779 | ### Example |
| 2780 | |
| 2781 | <div><fiddle-embed name="c015dc2010c15e1c00b4f7330232b0f7"></fiddle-embed></div> |
| 2782 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2783 | If <a href="undocumented#Shader">Shader</a> generates only <a href="undocumented#Alpha">Color Alpha</a> then all components of <a href="undocumented#Color">Color</a> modulate the output. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2784 | |
| 2785 | ### Example |
| 2786 | |
| 2787 | <div><fiddle-embed name="9673be7720ba3adcdae42ddc1565b588"></fiddle-embed></div> |
| 2788 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2789 | <a name="SkPaint_getShader"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2790 | ## getShader |
| 2791 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2792 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2793 | SkShader* getShader() const |
| 2794 | </pre> |
| 2795 | |
| 2796 | Optional colors used when filling a path, such as a gradient. |
| 2797 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2798 | Does not alter <a href="undocumented#Shader">Shader</a> <a href="undocumented#Reference_Count">Reference Count</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2799 | |
| 2800 | ### Return Value |
| 2801 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2802 | <a href="undocumented#Shader">Shader</a> if previously set, nullptr otherwise |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2803 | |
| 2804 | ### Example |
| 2805 | |
| 2806 | <div><fiddle-embed name="09f15b9fd88882850da2d235eb86292f"> |
| 2807 | |
| 2808 | #### Example Output |
| 2809 | |
| 2810 | ~~~~ |
| 2811 | nullptr == shader |
| 2812 | nullptr != shader |
| 2813 | ~~~~ |
| 2814 | |
| 2815 | </fiddle-embed></div> |
| 2816 | |
| 2817 | --- |
| 2818 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2819 | <a name="SkPaint_refShader"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2820 | ## refShader |
| 2821 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2822 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 2823 | sk_sp<SkShader> refShader() const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2824 | </pre> |
| 2825 | |
| 2826 | Optional colors used when filling a path, such as a gradient. |
| 2827 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2828 | Increases <a href="undocumented#Shader">Shader</a> <a href="undocumented#Reference_Count">Reference Count</a> by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2829 | |
| 2830 | ### Return Value |
| 2831 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2832 | <a href="undocumented#Shader">Shader</a> if previously set, nullptr otherwise |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2833 | |
| 2834 | ### Example |
| 2835 | |
| 2836 | <div><fiddle-embed name="53da0295972a418cbc9607bbb17feaa8"> |
| 2837 | |
| 2838 | #### Example Output |
| 2839 | |
| 2840 | ~~~~ |
| 2841 | shader unique: true |
| 2842 | shader unique: false |
| 2843 | ~~~~ |
| 2844 | |
| 2845 | </fiddle-embed></div> |
| 2846 | |
| 2847 | --- |
| 2848 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2849 | <a name="SkPaint_setShader"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2850 | ## setShader |
| 2851 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2852 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 2853 | void setShader(sk_sp<SkShader> shader) |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2854 | </pre> |
| 2855 | |
| 2856 | Optional colors used when filling a path, such as a gradient. |
| 2857 | |
Cary Clark | d0530ba | 2017-09-14 11:25:39 -0400 | [diff] [blame] | 2858 | Sets <a href="undocumented#Shader">Shader</a> to <a href="#SkPaint_setShader_shader">shader</a>, decreasing <a href="undocumented#Reference_Count">Reference Count</a> of the previous <a href="undocumented#Shader">Shader</a>. |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 2859 | Increments <a href="#SkPaint_setShader_shader">shader</a> <a href="undocumented#Reference_Count">Reference Count</a> by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2860 | |
| 2861 | ### Parameters |
| 2862 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2863 | <table> <tr> <td><a name="SkPaint_setShader_shader"> <code><strong>shader </strong></code> </a></td> <td> |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2864 | how geometry is filled with color; if nullptr, <a href="undocumented#Color">Color</a> is used instead</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2865 | </tr> |
| 2866 | </table> |
| 2867 | |
| 2868 | ### Example |
| 2869 | |
| 2870 | <div><fiddle-embed name="77e64d5bae9b1ba037fd99252bb4aa58"></fiddle-embed></div> |
| 2871 | |
| 2872 | --- |
| 2873 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2874 | ## <a name="Color_Filter_Methods"></a> Color Filter Methods |
| 2875 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2876 | <a href="undocumented#Color_Filter">Color Filter</a> alters the color used when drawing a shape. |
| 2877 | <a href="undocumented#Color_Filter">Color Filter</a> may apply <a href="undocumented#Blend_Mode">Blend Mode</a>, transform the color through a matrix, or composite multiple filters. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2878 | If <a href="#Paint">Paint</a> has no <a href="undocumented#Color_Filter">Color Filter</a>, the color is unaltered. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2879 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2880 | The drawn transparency can be modified without altering <a href="undocumented#Color_Filter">Color Filter</a>, by changing <a href="undocumented#Alpha">Color Alpha</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2881 | |
| 2882 | ### Example |
| 2883 | |
| 2884 | <div><fiddle-embed name="5abde56ca2f89a18b8e231abd1b57c56"></fiddle-embed></div> |
| 2885 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2886 | <a name="SkPaint_getColorFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2887 | ## getColorFilter |
| 2888 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2889 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2890 | SkColorFilter* getColorFilter() const |
| 2891 | </pre> |
| 2892 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2893 | Returns <a href="undocumented#Color_Filter">Color Filter</a> if set, or nullptr. |
| 2894 | Does not alter <a href="undocumented#Color_Filter">Color Filter</a> <a href="undocumented#Reference_Count">Reference Count</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2895 | |
| 2896 | ### Return Value |
| 2897 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2898 | <a href="undocumented#Color_Filter">Color Filter</a> if previously set, nullptr otherwise |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2899 | |
| 2900 | ### Example |
| 2901 | |
| 2902 | <div><fiddle-embed name="093bdc627d6b59002670fd290931f6c9"> |
| 2903 | |
| 2904 | #### Example Output |
| 2905 | |
| 2906 | ~~~~ |
| 2907 | nullptr == color filter |
| 2908 | nullptr != color filter |
| 2909 | ~~~~ |
| 2910 | |
| 2911 | </fiddle-embed></div> |
| 2912 | |
| 2913 | --- |
| 2914 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2915 | <a name="SkPaint_refColorFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2916 | ## refColorFilter |
| 2917 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2918 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 2919 | sk_sp<SkColorFilter> refColorFilter() const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2920 | </pre> |
| 2921 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2922 | Returns <a href="undocumented#Color_Filter">Color Filter</a> if set, or nullptr. |
| 2923 | Increases <a href="undocumented#Color_Filter">Color Filter</a> <a href="undocumented#Reference_Count">Reference Count</a> by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2924 | |
| 2925 | ### Return Value |
| 2926 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2927 | <a href="undocumented#Color_Filter">Color Filter</a> if set, or nullptr |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2928 | |
| 2929 | ### Example |
| 2930 | |
| 2931 | <div><fiddle-embed name="b588c95fa4c86ddbc4b0546762f08297"> |
| 2932 | |
| 2933 | #### Example Output |
| 2934 | |
| 2935 | ~~~~ |
| 2936 | color filter unique: true |
| 2937 | color filter unique: false |
| 2938 | ~~~~ |
| 2939 | |
| 2940 | </fiddle-embed></div> |
| 2941 | |
| 2942 | --- |
| 2943 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2944 | <a name="SkPaint_setColorFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2945 | ## setColorFilter |
| 2946 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2947 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 2948 | void setColorFilter(sk_sp<SkColorFilter> colorFilter) |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2949 | </pre> |
| 2950 | |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 2951 | Sets <a href="undocumented#Color_Filter">Color Filter</a> to filter, decreasing <a href="undocumented#Reference_Count">Reference Count</a> of the previous |
| 2952 | <a href="undocumented#Color_Filter">Color Filter</a>. Pass nullptr to clear <a href="undocumented#Color_Filter">Color Filter</a>. |
| 2953 | |
| 2954 | Increments filter <a href="undocumented#Reference_Count">Reference Count</a> by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2955 | |
| 2956 | ### Parameters |
| 2957 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2958 | <table> <tr> <td><a name="SkPaint_setColorFilter_colorFilter"> <code><strong>colorFilter </strong></code> </a></td> <td> |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2959 | <a href="undocumented#Color_Filter">Color Filter</a> to apply to subsequent draw</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2960 | </tr> |
| 2961 | </table> |
| 2962 | |
| 2963 | ### Example |
| 2964 | |
| 2965 | <div><fiddle-embed name="c7b786dc9b3501cd0eaba47494b6fa31"></fiddle-embed></div> |
| 2966 | |
| 2967 | --- |
| 2968 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2969 | ## <a name="Blend_Mode_Methods"></a> Blend Mode Methods |
| 2970 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2971 | <a href="undocumented#Blend_Mode">Blend Mode</a> describes how <a href="undocumented#Color">Color</a> combines with the destination color. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2972 | The default setting, <a href="undocumented#SkBlendMode_kSrcOver">SkBlendMode::kSrcOver</a>, draws the source color |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2973 | over the destination color. |
| 2974 | |
| 2975 | ### Example |
| 2976 | |
| 2977 | <div><fiddle-embed name="73092d4d06faecea3c204d852a4dd8a8"></fiddle-embed></div> |
| 2978 | |
| 2979 | ### See Also |
| 2980 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2981 | <a href="undocumented#Blend_Mode">Blend Mode</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2982 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2983 | <a name="SkPaint_getBlendMode"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2984 | ## getBlendMode |
| 2985 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2986 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2987 | SkBlendMode getBlendMode() const |
| 2988 | </pre> |
| 2989 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2990 | Returns <a href="undocumented#Blend_Mode">Blend Mode</a>. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 2991 | By default, returns <a href="undocumented#SkBlendMode_kSrcOver">SkBlendMode::kSrcOver</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2992 | |
| 2993 | ### Return Value |
| 2994 | |
| 2995 | mode used to combine source color with destination color |
| 2996 | |
| 2997 | ### Example |
| 2998 | |
| 2999 | <div><fiddle-embed name="4ec1864b8203d52c0810e8605092f45c"> |
| 3000 | |
| 3001 | #### Example Output |
| 3002 | |
| 3003 | ~~~~ |
| 3004 | kSrcOver == getBlendMode |
| 3005 | kSrcOver != getBlendMode |
| 3006 | ~~~~ |
| 3007 | |
| 3008 | </fiddle-embed></div> |
| 3009 | |
| 3010 | --- |
| 3011 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3012 | <a name="SkPaint_isSrcOver"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3013 | ## isSrcOver |
| 3014 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3015 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3016 | bool isSrcOver() const |
| 3017 | </pre> |
| 3018 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 3019 | Returns true if <a href="undocumented#Blend_Mode">Blend Mode</a> is <a href="undocumented#SkBlendMode_kSrcOver">SkBlendMode::kSrcOver</a>, the default. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3020 | |
| 3021 | ### Return Value |
| 3022 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 3023 | true if <a href="undocumented#Blend_Mode">Blend Mode</a> is <a href="undocumented#SkBlendMode_kSrcOver">SkBlendMode::kSrcOver</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3024 | |
| 3025 | ### Example |
| 3026 | |
| 3027 | <div><fiddle-embed name="257c9473db7a2b3a0fb2b9e2431e59a6"> |
| 3028 | |
| 3029 | #### Example Output |
| 3030 | |
| 3031 | ~~~~ |
| 3032 | isSrcOver == true |
| 3033 | isSrcOver != true |
| 3034 | ~~~~ |
| 3035 | |
| 3036 | </fiddle-embed></div> |
| 3037 | |
| 3038 | --- |
| 3039 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3040 | <a name="SkPaint_setBlendMode"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3041 | ## setBlendMode |
| 3042 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3043 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3044 | void setBlendMode(SkBlendMode mode) |
| 3045 | </pre> |
| 3046 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3047 | Sets <a href="undocumented#Blend_Mode">Blend Mode</a> to <a href="#SkPaint_setBlendMode_mode">mode</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3048 | Does not check for valid input. |
| 3049 | |
| 3050 | ### Parameters |
| 3051 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3052 | <table> <tr> <td><a name="SkPaint_setBlendMode_mode"> <code><strong>mode </strong></code> </a></td> <td> |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3053 | <a href="undocumented#SkBlendMode">SkBlendMode</a> used to combine source color and destination</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3054 | </tr> |
| 3055 | </table> |
| 3056 | |
| 3057 | ### Example |
| 3058 | |
| 3059 | <div><fiddle-embed name="257c9473db7a2b3a0fb2b9e2431e59a6"> |
| 3060 | |
| 3061 | #### Example Output |
| 3062 | |
| 3063 | ~~~~ |
| 3064 | isSrcOver == true |
| 3065 | isSrcOver != true |
| 3066 | ~~~~ |
| 3067 | |
| 3068 | </fiddle-embed></div> |
| 3069 | |
| 3070 | --- |
| 3071 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3072 | ## <a name="Path_Effect_Methods"></a> Path Effect Methods |
| 3073 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3074 | <a href="undocumented#Path_Effect">Path Effect</a> modifies the path geometry before drawing it. |
| 3075 | <a href="undocumented#Path_Effect">Path Effect</a> may implement dashing, custom fill effects and custom stroke effects. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3076 | If <a href="#Paint">Paint</a> has no <a href="undocumented#Path_Effect">Path Effect</a>, the path geometry is unaltered when filled or stroked. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3077 | |
| 3078 | ### Example |
| 3079 | |
| 3080 | <div><fiddle-embed name="8cf5684b187d60f09e11c4a48993ea39"></fiddle-embed></div> |
| 3081 | |
| 3082 | ### See Also |
| 3083 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3084 | <a href="undocumented#Path_Effect">Path Effect</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3085 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3086 | <a name="SkPaint_getPathEffect"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3087 | ## getPathEffect |
| 3088 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3089 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3090 | SkPathEffect* getPathEffect() const |
| 3091 | </pre> |
| 3092 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3093 | Returns <a href="undocumented#Path_Effect">Path Effect</a> if set, or nullptr. |
| 3094 | Does not alter <a href="undocumented#Path_Effect">Path Effect</a> <a href="undocumented#Reference_Count">Reference Count</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3095 | |
| 3096 | ### Return Value |
| 3097 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3098 | <a href="undocumented#Path_Effect">Path Effect</a> if previously set, nullptr otherwise |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3099 | |
| 3100 | ### Example |
| 3101 | |
| 3102 | <div><fiddle-embed name="211a1b14bfa6c4332082c8eab4fbc5fd"> |
| 3103 | |
| 3104 | #### Example Output |
| 3105 | |
| 3106 | ~~~~ |
| 3107 | nullptr == path effect |
| 3108 | nullptr != path effect |
| 3109 | ~~~~ |
| 3110 | |
| 3111 | </fiddle-embed></div> |
| 3112 | |
| 3113 | --- |
| 3114 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3115 | <a name="SkPaint_refPathEffect"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3116 | ## refPathEffect |
| 3117 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3118 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 3119 | sk_sp<SkPathEffect> refPathEffect() const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3120 | </pre> |
| 3121 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3122 | Returns <a href="undocumented#Path_Effect">Path Effect</a> if set, or nullptr. |
| 3123 | Increases <a href="undocumented#Path_Effect">Path Effect</a> <a href="undocumented#Reference_Count">Reference Count</a> by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3124 | |
| 3125 | ### Return Value |
| 3126 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3127 | <a href="undocumented#Path_Effect">Path Effect</a> if previously set, nullptr otherwise |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3128 | |
| 3129 | ### Example |
| 3130 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3131 | <div><fiddle-embed name="f56039b94c702c2704c8c5100e623aca"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3132 | |
| 3133 | #### Example Output |
| 3134 | |
| 3135 | ~~~~ |
| 3136 | path effect unique: true |
| 3137 | path effect unique: false |
| 3138 | ~~~~ |
| 3139 | |
| 3140 | </fiddle-embed></div> |
| 3141 | |
| 3142 | --- |
| 3143 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3144 | <a name="SkPaint_setPathEffect"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3145 | ## setPathEffect |
| 3146 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3147 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 3148 | void setPathEffect(sk_sp<SkPathEffect> pathEffect) |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3149 | </pre> |
| 3150 | |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3151 | Sets <a href="undocumented#Path_Effect">Path Effect</a> to <a href="#SkPaint_setPathEffect_pathEffect">pathEffect</a>, decreasing <a href="undocumented#Reference_Count">Reference Count</a> of the previous |
| 3152 | <a href="undocumented#Path_Effect">Path Effect</a>. Pass nullptr to leave the path geometry unaltered. |
| 3153 | |
| 3154 | Increments <a href="#SkPaint_setPathEffect_pathEffect">pathEffect</a> <a href="undocumented#Reference_Count">Reference Count</a> by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3155 | |
| 3156 | ### Parameters |
| 3157 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3158 | <table> <tr> <td><a name="SkPaint_setPathEffect_pathEffect"> <code><strong>pathEffect </strong></code> </a></td> <td> |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3159 | replace <a href="SkPath_Reference#Path">Path</a> with a modification when drawn</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3160 | </tr> |
| 3161 | </table> |
| 3162 | |
| 3163 | ### Example |
| 3164 | |
| 3165 | <div><fiddle-embed name="52dd55074ca0b7d520d04e750ca2a0d7"></fiddle-embed></div> |
| 3166 | |
| 3167 | --- |
| 3168 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3169 | ## <a name="Mask_Filter_Methods"></a> Mask Filter Methods |
| 3170 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 3171 | <a href="undocumented#Mask_Filter">Mask Filter</a> uses coverage of the shape drawn to create <a href="undocumented#Mask_Alpha">Mask Alpha</a>. |
Cary Clark | f895a42 | 2018-02-27 09:54:21 -0500 | [diff] [blame] | 3172 | <a href="undocumented#Mask_Filter">Mask Filter</a> takes a Mask, and returns a Mask. |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3173 | |
| 3174 | <a href="undocumented#Mask_Filter">Mask Filter</a> may change the geometry and transparency of the shape, such as |
| 3175 | creating a blur effect. Set <a href="undocumented#Mask_Filter">Mask Filter</a> to nullptr to prevent <a href="undocumented#Mask_Filter">Mask Filter</a> from |
| 3176 | modifying the draw. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3177 | |
| 3178 | ### Example |
| 3179 | |
Cary Clark | 681287e | 2018-03-16 11:34:15 -0400 | [diff] [blame] | 3180 | <div><fiddle-embed name="55d7b9d482ac8e17a6153f555a8adb8d"></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3181 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3182 | <a name="SkPaint_getMaskFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3183 | ## getMaskFilter |
| 3184 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3185 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3186 | SkMaskFilter* getMaskFilter() const |
| 3187 | </pre> |
| 3188 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3189 | Returns <a href="undocumented#Mask_Filter">Mask Filter</a> if set, or nullptr. |
| 3190 | Does not alter <a href="undocumented#Mask_Filter">Mask Filter</a> <a href="undocumented#Reference_Count">Reference Count</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3191 | |
| 3192 | ### Return Value |
| 3193 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3194 | <a href="undocumented#Mask_Filter">Mask Filter</a> if previously set, nullptr otherwise |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3195 | |
| 3196 | ### Example |
| 3197 | |
Cary Clark | 681287e | 2018-03-16 11:34:15 -0400 | [diff] [blame] | 3198 | <div><fiddle-embed name="5ac4b31371726da87bb7390b385e9fee"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3199 | |
| 3200 | #### Example Output |
| 3201 | |
| 3202 | ~~~~ |
| 3203 | nullptr == mask filter |
| 3204 | nullptr != mask filter |
| 3205 | ~~~~ |
| 3206 | |
| 3207 | </fiddle-embed></div> |
| 3208 | |
| 3209 | --- |
| 3210 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3211 | <a name="SkPaint_refMaskFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3212 | ## refMaskFilter |
| 3213 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3214 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 3215 | sk_sp<SkMaskFilter> refMaskFilter() const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3216 | </pre> |
| 3217 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3218 | Returns <a href="undocumented#Mask_Filter">Mask Filter</a> if set, or nullptr. |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3219 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3220 | Increases <a href="undocumented#Mask_Filter">Mask Filter</a> <a href="undocumented#Reference_Count">Reference Count</a> by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3221 | |
| 3222 | ### Return Value |
| 3223 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3224 | <a href="undocumented#Mask_Filter">Mask Filter</a> if previously set, nullptr otherwise |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3225 | |
| 3226 | ### Example |
| 3227 | |
Cary Clark | 681287e | 2018-03-16 11:34:15 -0400 | [diff] [blame] | 3228 | <div><fiddle-embed name="084b0dc3cebd78718c651d58f257f799"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3229 | |
| 3230 | #### Example Output |
| 3231 | |
| 3232 | ~~~~ |
| 3233 | mask filter unique: true |
| 3234 | mask filter unique: false |
| 3235 | ~~~~ |
| 3236 | |
| 3237 | </fiddle-embed></div> |
| 3238 | |
| 3239 | --- |
| 3240 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3241 | <a name="SkPaint_setMaskFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3242 | ## setMaskFilter |
| 3243 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3244 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 3245 | void setMaskFilter(sk_sp<SkMaskFilter> maskFilter) |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3246 | </pre> |
| 3247 | |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3248 | Sets <a href="undocumented#Mask_Filter">Mask Filter</a> to <a href="#SkPaint_setMaskFilter_maskFilter">maskFilter</a>, decreasing <a href="undocumented#Reference_Count">Reference Count</a> of the previous |
| 3249 | <a href="undocumented#Mask_Filter">Mask Filter</a>. Pass nullptr to clear <a href="undocumented#Mask_Filter">Mask Filter</a> and leave <a href="undocumented#Mask_Filter">Mask Filter</a> effect on |
| 3250 | <a href="undocumented#Mask_Alpha">Mask Alpha</a> unaltered. |
| 3251 | |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3252 | Increments <a href="#SkPaint_setMaskFilter_maskFilter">maskFilter</a> <a href="undocumented#Reference_Count">Reference Count</a> by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3253 | |
| 3254 | ### Parameters |
| 3255 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3256 | <table> <tr> <td><a name="SkPaint_setMaskFilter_maskFilter"> <code><strong>maskFilter </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3257 | modifies clipping mask generated from drawn geometry</td> |
| 3258 | </tr> |
| 3259 | </table> |
| 3260 | |
| 3261 | ### Example |
| 3262 | |
Cary Clark | 681287e | 2018-03-16 11:34:15 -0400 | [diff] [blame] | 3263 | <div><fiddle-embed name="a993831c40f3e134f809134e3b74e4a6"></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3264 | |
| 3265 | --- |
| 3266 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3267 | ## <a name="Typeface_Methods"></a> Typeface Methods |
| 3268 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3269 | <a href="undocumented#Typeface">Typeface</a> identifies the font used when drawing and measuring text. |
| 3270 | <a href="undocumented#Typeface">Typeface</a> may be specified by name, from a file, or from a data stream. |
| 3271 | The default <a href="undocumented#Typeface">Typeface</a> defers to the platform-specific default font |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3272 | implementation. |
| 3273 | |
| 3274 | ### Example |
| 3275 | |
Ben Wagner | 700ff17 | 2017-11-08 15:37:22 -0500 | [diff] [blame] | 3276 | <div><fiddle-embed name="1a7a5062725139760962582f599f1b97"></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3277 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3278 | <a name="SkPaint_getTypeface"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3279 | ## getTypeface |
| 3280 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3281 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3282 | SkTypeface* getTypeface() const |
| 3283 | </pre> |
| 3284 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3285 | Returns <a href="undocumented#Typeface">Typeface</a> if set, or nullptr. |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3286 | Increments <a href="undocumented#Typeface">Typeface</a> <a href="undocumented#Reference_Count">Reference Count</a> by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3287 | |
| 3288 | ### Return Value |
| 3289 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3290 | <a href="undocumented#Typeface">Typeface</a> if previously set, nullptr otherwise |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3291 | |
| 3292 | ### Example |
| 3293 | |
Cary Clark | 71961fb | 2018-01-05 14:21:59 -0500 | [diff] [blame] | 3294 | <div><fiddle-embed name="5ce718e5a184baaac80e7098d7dad67b"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3295 | |
| 3296 | #### Example Output |
| 3297 | |
| 3298 | ~~~~ |
| 3299 | nullptr == typeface |
| 3300 | nullptr != typeface |
| 3301 | ~~~~ |
| 3302 | |
| 3303 | </fiddle-embed></div> |
| 3304 | |
| 3305 | --- |
| 3306 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3307 | <a name="SkPaint_refTypeface"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3308 | ## refTypeface |
| 3309 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3310 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 3311 | sk_sp<SkTypeface> refTypeface() const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3312 | </pre> |
| 3313 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3314 | Increases <a href="undocumented#Typeface">Typeface</a> <a href="undocumented#Reference_Count">Reference Count</a> by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3315 | |
| 3316 | ### Return Value |
| 3317 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3318 | <a href="undocumented#Typeface">Typeface</a> if previously set, nullptr otherwise |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3319 | |
| 3320 | ### Example |
| 3321 | |
Cary Clark | 71961fb | 2018-01-05 14:21:59 -0500 | [diff] [blame] | 3322 | <div><fiddle-embed name="4bf8ed109c4b46d8a05c8b7763c1982c"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3323 | |
| 3324 | #### Example Output |
| 3325 | |
| 3326 | ~~~~ |
| 3327 | typeface1 != typeface2 |
| 3328 | typeface1 == typeface2 |
| 3329 | ~~~~ |
| 3330 | |
| 3331 | </fiddle-embed></div> |
| 3332 | |
| 3333 | --- |
| 3334 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3335 | <a name="SkPaint_setTypeface"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3336 | ## setTypeface |
| 3337 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3338 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 3339 | void setTypeface(sk_sp<SkTypeface> typeface) |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3340 | </pre> |
| 3341 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3342 | Sets <a href="undocumented#Typeface">Typeface</a> to <a href="#SkPaint_setTypeface_typeface">typeface</a>, decreasing <a href="undocumented#Reference_Count">Reference Count</a> of the previous <a href="undocumented#Typeface">Typeface</a>. |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3343 | Pass nullptr to clear <a href="undocumented#Typeface">Typeface</a> and use the default <a href="#SkPaint_setTypeface_typeface">typeface</a>. Increments |
| 3344 | <a href="#SkPaint_setTypeface_typeface">typeface</a> <a href="undocumented#Reference_Count">Reference Count</a> by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3345 | |
| 3346 | ### Parameters |
| 3347 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3348 | <table> <tr> <td><a name="SkPaint_setTypeface_typeface"> <code><strong>typeface </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3349 | font and style used to draw text</td> |
| 3350 | </tr> |
| 3351 | </table> |
| 3352 | |
| 3353 | ### Example |
| 3354 | |
Cary Clark | 71961fb | 2018-01-05 14:21:59 -0500 | [diff] [blame] | 3355 | <div><fiddle-embed name="0e6fbb7773cd925b274552f4cd1abef2"></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3356 | |
| 3357 | --- |
| 3358 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3359 | ## <a name="Image_Filter_Methods"></a> Image Filter Methods |
| 3360 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3361 | <a href="undocumented#Image_Filter">Image Filter</a> operates on the pixel representation of the shape, as modified by <a href="#Paint">Paint</a> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 3362 | with <a href="undocumented#Blend_Mode">Blend Mode</a> set to <a href="undocumented#SkBlendMode_kSrcOver">SkBlendMode::kSrcOver</a>. <a href="undocumented#Image_Filter">Image Filter</a> creates a new bitmap, |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3363 | which is drawn to the device using the set <a href="undocumented#Blend_Mode">Blend Mode</a>. |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3364 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3365 | <a href="undocumented#Image_Filter">Image Filter</a> is higher level than <a href="undocumented#Mask_Filter">Mask Filter</a>; for instance, an <a href="undocumented#Image_Filter">Image Filter</a> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 3366 | can operate on all channels of <a href="undocumented#Color">Color</a>, while <a href="undocumented#Mask_Filter">Mask Filter</a> generates <a href="undocumented#Alpha">Alpha</a> only. |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3367 | <a href="undocumented#Image_Filter">Image Filter</a> operates independently of and can be used in combination with |
Update Docs | 949cfd4 | 2018-01-22 05:50:26 +0000 | [diff] [blame] | 3368 | <a href="undocumented#Mask_Filter">Mask Filter</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3369 | |
| 3370 | ### Example |
| 3371 | |
Update Docs | 4410d7f | 2018-03-19 06:05:52 +0000 | [diff] [blame] | 3372 | <div><fiddle-embed name="250e45c5935d54eac6aca775d1fe3475"></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3373 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3374 | <a name="SkPaint_getImageFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3375 | ## getImageFilter |
| 3376 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3377 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3378 | SkImageFilter* getImageFilter() const |
| 3379 | </pre> |
| 3380 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3381 | Returns <a href="undocumented#Image_Filter">Image Filter</a> if set, or nullptr. |
| 3382 | Does not alter <a href="undocumented#Image_Filter">Image Filter</a> <a href="undocumented#Reference_Count">Reference Count</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3383 | |
| 3384 | ### Return Value |
| 3385 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3386 | <a href="undocumented#Image_Filter">Image Filter</a> if previously set, nullptr otherwise |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3387 | |
| 3388 | ### Example |
| 3389 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3390 | <div><fiddle-embed name="7b8118ff57fcb84e6bc82380d155b62e"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3391 | |
| 3392 | #### Example Output |
| 3393 | |
| 3394 | ~~~~ |
| 3395 | nullptr == image filter |
| 3396 | nullptr != image filter |
| 3397 | ~~~~ |
| 3398 | |
| 3399 | </fiddle-embed></div> |
| 3400 | |
| 3401 | --- |
| 3402 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3403 | <a name="SkPaint_refImageFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3404 | ## refImageFilter |
| 3405 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3406 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 3407 | sk_sp<SkImageFilter> refImageFilter() const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3408 | </pre> |
| 3409 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3410 | Returns <a href="undocumented#Image_Filter">Image Filter</a> if set, or nullptr. |
| 3411 | Increases <a href="undocumented#Image_Filter">Image Filter</a> <a href="undocumented#Reference_Count">Reference Count</a> by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3412 | |
| 3413 | ### Return Value |
| 3414 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3415 | <a href="undocumented#Image_Filter">Image Filter</a> if previously set, nullptr otherwise |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3416 | |
| 3417 | ### Example |
| 3418 | |
| 3419 | <div><fiddle-embed name="13f09088b569251547107d14ae989dc1"> |
| 3420 | |
| 3421 | #### Example Output |
| 3422 | |
| 3423 | ~~~~ |
| 3424 | image filter unique: true |
| 3425 | image filter unique: false |
| 3426 | ~~~~ |
| 3427 | |
| 3428 | </fiddle-embed></div> |
| 3429 | |
| 3430 | --- |
| 3431 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3432 | <a name="SkPaint_setImageFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3433 | ## setImageFilter |
| 3434 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3435 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 3436 | void setImageFilter(sk_sp<SkImageFilter> imageFilter) |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3437 | </pre> |
| 3438 | |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3439 | Sets <a href="undocumented#Image_Filter">Image Filter</a> to <a href="#SkPaint_setImageFilter_imageFilter">imageFilter</a>, decreasing <a href="undocumented#Reference_Count">Reference Count</a> of the previous |
| 3440 | <a href="undocumented#Image_Filter">Image Filter</a>. Pass nullptr to clear <a href="undocumented#Image_Filter">Image Filter</a>, and remove <a href="undocumented#Image_Filter">Image Filter</a> effect |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3441 | on drawing. |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3442 | |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3443 | Increments <a href="#SkPaint_setImageFilter_imageFilter">imageFilter</a> <a href="undocumented#Reference_Count">Reference Count</a> by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3444 | |
| 3445 | ### Parameters |
| 3446 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3447 | <table> <tr> <td><a name="SkPaint_setImageFilter_imageFilter"> <code><strong>imageFilter </strong></code> </a></td> <td> |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3448 | how <a href="SkImage_Reference#Image">Image</a> is sampled when transformed</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3449 | </tr> |
| 3450 | </table> |
| 3451 | |
| 3452 | ### Example |
| 3453 | |
| 3454 | <div><fiddle-embed name="6679d6e4ec632715ee03e68391bd7f9a"></fiddle-embed></div> |
| 3455 | |
| 3456 | --- |
| 3457 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3458 | ## <a name="Draw_Looper_Methods"></a> Draw Looper Methods |
| 3459 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3460 | <a href="undocumented#Draw_Looper">Draw Looper</a> sets a modifier that communicates state from one <a href="undocumented#Draw_Layer">Draw Layer</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3461 | to another to construct the draw. |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3462 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3463 | <a href="undocumented#Draw_Looper">Draw Looper</a> draws one or more times, modifying the canvas and paint each time. |
| 3464 | <a href="undocumented#Draw_Looper">Draw Looper</a> may be used to draw multiple colors or create a colored shadow. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3465 | Set <a href="undocumented#Draw_Looper">Draw Looper</a> to nullptr to prevent <a href="undocumented#Draw_Looper">Draw Looper</a> from modifying the draw. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3466 | |
| 3467 | ### Example |
| 3468 | |
| 3469 | <div><fiddle-embed name="84ec12a36e50df5ac565cc7a75ffbe9f"></fiddle-embed></div> |
| 3470 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3471 | <a name="SkPaint_getDrawLooper"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3472 | ## getDrawLooper |
| 3473 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3474 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3475 | SkDrawLooper* getDrawLooper() const |
| 3476 | </pre> |
| 3477 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3478 | Returns <a href="undocumented#Draw_Looper">Draw Looper</a> if set, or nullptr. |
| 3479 | Does not alter <a href="undocumented#Draw_Looper">Draw Looper</a> <a href="undocumented#Reference_Count">Reference Count</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3480 | |
| 3481 | ### Return Value |
| 3482 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3483 | <a href="undocumented#Draw_Looper">Draw Looper</a> if previously set, nullptr otherwise |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3484 | |
| 3485 | ### Example |
| 3486 | |
| 3487 | <div><fiddle-embed name="af4c5acc7a91e7f23c2af48018903ad4"> |
| 3488 | |
| 3489 | #### Example Output |
| 3490 | |
| 3491 | ~~~~ |
| 3492 | nullptr == draw looper |
| 3493 | nullptr != draw looper |
| 3494 | ~~~~ |
| 3495 | |
| 3496 | </fiddle-embed></div> |
| 3497 | |
| 3498 | --- |
| 3499 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3500 | <a name="SkPaint_refDrawLooper"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3501 | ## refDrawLooper |
| 3502 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3503 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 3504 | sk_sp<SkDrawLooper> refDrawLooper() const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3505 | </pre> |
| 3506 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3507 | Returns <a href="undocumented#Draw_Looper">Draw Looper</a> if set, or nullptr. |
| 3508 | Increases <a href="undocumented#Draw_Looper">Draw Looper</a> <a href="undocumented#Reference_Count">Reference Count</a> by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3509 | |
| 3510 | ### Return Value |
| 3511 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3512 | <a href="undocumented#Draw_Looper">Draw Looper</a> if previously set, nullptr otherwise |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3513 | |
| 3514 | ### Example |
| 3515 | |
| 3516 | <div><fiddle-embed name="2a3782c33f04ed17a725d0e449c6f7c3"> |
| 3517 | |
| 3518 | #### Example Output |
| 3519 | |
| 3520 | ~~~~ |
| 3521 | draw looper unique: true |
| 3522 | draw looper unique: false |
| 3523 | ~~~~ |
| 3524 | |
| 3525 | </fiddle-embed></div> |
| 3526 | |
| 3527 | --- |
| 3528 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3529 | <a name="SkPaint_getLooper"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3530 | ## getLooper |
| 3531 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3532 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3533 | SkDrawLooper* getLooper() const |
| 3534 | </pre> |
| 3535 | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3536 | --- |
| 3537 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3538 | <a name="SkPaint_setDrawLooper"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3539 | ## setDrawLooper |
| 3540 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3541 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 3542 | void setDrawLooper(sk_sp<SkDrawLooper> drawLooper) |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3543 | </pre> |
| 3544 | |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3545 | Sets <a href="undocumented#Draw_Looper">Draw Looper</a> to <a href="#SkPaint_setDrawLooper_drawLooper">drawLooper</a>, decreasing <a href="undocumented#Reference_Count">Reference Count</a> of the previous |
| 3546 | <a href="#SkPaint_setDrawLooper_drawLooper">drawLooper</a>. Pass nullptr to clear <a href="undocumented#Draw_Looper">Draw Looper</a> and leave <a href="undocumented#Draw_Looper">Draw Looper</a> effect on |
| 3547 | drawing unaltered. |
| 3548 | |
| 3549 | Increments <a href="#SkPaint_setDrawLooper_drawLooper">drawLooper</a> <a href="undocumented#Reference_Count">Reference Count</a> by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3550 | |
| 3551 | ### Parameters |
| 3552 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3553 | <table> <tr> <td><a name="SkPaint_setDrawLooper_drawLooper"> <code><strong>drawLooper </strong></code> </a></td> <td> |
Cary Clark | a523d2d | 2017-08-30 08:58:10 -0400 | [diff] [blame] | 3554 | iterates through drawing one or more time, altering <a href="#Paint">Paint</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3555 | </tr> |
| 3556 | </table> |
| 3557 | |
| 3558 | ### Example |
| 3559 | |
| 3560 | <div><fiddle-embed name="bf10f838b330f0a3a3266d42ea68a638"></fiddle-embed></div> |
| 3561 | |
| 3562 | --- |
| 3563 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3564 | <a name="SkPaint_setLooper"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3565 | ## setLooper |
| 3566 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3567 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 3568 | void setLooper(sk_sp<SkDrawLooper> drawLooper) |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3569 | </pre> |
| 3570 | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3571 | --- |
| 3572 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3573 | ## <a name="Text_Align"></a> Text Align |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3574 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3575 | ## <a name="SkPaint_Align"></a> Enum SkPaint::Align |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3576 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3577 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3578 | enum <a href="#SkPaint_Align">Align</a> { |
| 3579 | <a href="#SkPaint_kLeft_Align">kLeft Align</a>, |
| 3580 | <a href="#SkPaint_kCenter_Align">kCenter Align</a>, |
| 3581 | <a href="#SkPaint_kRight_Align">kRight Align</a>, |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 3582 | }; |
| 3583 | </pre> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3584 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3585 | <a href="#SkPaint_Align">Align</a> adjusts the text relative to the text position. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 3586 | <a href="#SkPaint_Align">Align</a> affects <a href="undocumented#Glyph">Glyphs</a> drawn with: <a href="SkCanvas_Reference#SkCanvas_drawText">SkCanvas::drawText</a>, <a href="SkCanvas_Reference#SkCanvas_drawPosText">SkCanvas::drawPosText</a>, |
| 3587 | <a href="SkCanvas_Reference#SkCanvas_drawPosTextH">SkCanvas::drawPosTextH</a>, <a href="SkCanvas_Reference#SkCanvas_drawTextOnPath">SkCanvas::drawTextOnPath</a>, |
| 3588 | <a href="SkCanvas_Reference#SkCanvas_drawTextOnPathHV">SkCanvas::drawTextOnPathHV</a>, <a href="SkCanvas_Reference#SkCanvas_drawTextRSXform">SkCanvas::drawTextRSXform</a>, <a href="SkCanvas_Reference#SkCanvas_drawTextBlob">SkCanvas::drawTextBlob</a>, |
| 3589 | and <a href="SkCanvas_Reference#SkCanvas_drawString">SkCanvas::drawString</a>; |
| 3590 | as well as calls that place text <a href="undocumented#Glyph">Glyphs</a> like <a href="#SkPaint_getTextWidths">getTextWidths</a> and <a href="#SkPaint_getTextPath">getTextPath</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3591 | |
| 3592 | The text position is set by the font for both horizontal and vertical text. |
| 3593 | Typically, for horizontal text, the position is to the left side of the glyph on the |
| 3594 | base line; and for vertical text, the position is the horizontal center of the glyph |
| 3595 | at the caps height. |
| 3596 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3597 | <a href="#SkPaint_Align">Align</a> adjusts the glyph position to center it or move it to abut the position |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3598 | using the metrics returned by the font. |
| 3599 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3600 | <a href="#SkPaint_Align">Align</a> defaults to <a href="#SkPaint_kLeft_Align">kLeft Align</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3601 | |
| 3602 | ### Constants |
| 3603 | |
| 3604 | <table> |
| 3605 | <tr> |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 3606 | <td><a name="SkPaint_kLeft_Align"> <code><strong>SkPaint::kLeft_Align </strong></code> </a></td><td>0</td><td>Leaves the glyph at the position computed by the font offset by the text position. |
| 3607 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3608 | </tr> |
| 3609 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3610 | <td><a name="SkPaint_kCenter_Align"> <code><strong>SkPaint::kCenter_Align </strong></code> </a></td><td>1</td><td>Moves the glyph half its width if <a href="#SkPaint_Flags">Flags</a> has <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> clear, and |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 3611 | half its height if <a href="#SkPaint_Flags">Flags</a> has <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> set. |
| 3612 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3613 | </tr> |
| 3614 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3615 | <td><a name="SkPaint_kRight_Align"> <code><strong>SkPaint::kRight_Align </strong></code> </a></td><td>2</td><td>Moves the glyph by its width if <a href="#SkPaint_Flags">Flags</a> has <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> clear, |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 3616 | and by its height if <a href="#SkPaint_Flags">Flags</a> has <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> set. |
| 3617 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3618 | </tr> |
| 3619 | |
| 3620 | </table> |
| 3621 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3622 | ## <a name="SkPaint__anonymous_2"></a> Enum SkPaint::_anonymous_2 |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3623 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3624 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3625 | enum { |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3626 | <a href="#SkPaint_kAlignCount">kAlignCount</a> = 3, |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 3627 | }; |
| 3628 | </pre> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3629 | |
| 3630 | ### Constants |
| 3631 | |
| 3632 | <table> |
| 3633 | <tr> |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 3634 | <td><a name="SkPaint_kAlignCount"> <code><strong>SkPaint::kAlignCount </strong></code> </a></td><td>3</td><td>The number of different <a href="#Text_Align">Text Align</a> values defined. |
| 3635 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3636 | </tr> |
| 3637 | |
| 3638 | </table> |
| 3639 | |
| 3640 | ### Example |
| 3641 | |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 3642 | <div><fiddle-embed name="702617fd9ebc3f12e30081b5db93e8a8"><div>Each position separately moves the glyph in drawPosText. |
| 3643 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3644 | |
| 3645 | ### Example |
| 3646 | |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 3647 | <div><fiddle-embed name="f1cbbbafe6b3c52b81309cccbf96a308"><div><a href="#Vertical_Text">Vertical Text</a> treats <a href="#SkPaint_kLeft_Align">kLeft Align</a> as top align, and <a href="#SkPaint_kRight_Align">kRight Align</a> as bottom align. |
| 3648 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3649 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3650 | <a name="SkPaint_getTextAlign"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3651 | ## getTextAlign |
| 3652 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3653 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3654 | Align getTextAlign() const |
| 3655 | </pre> |
| 3656 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3657 | Returns <a href="#Text_Align">Text Align</a>. |
| 3658 | Returns <a href="#SkPaint_kLeft_Align">kLeft Align</a> if <a href="#Text_Align">Text Align</a> has not been set. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3659 | |
| 3660 | ### Return Value |
| 3661 | |
| 3662 | text placement relative to position |
| 3663 | |
| 3664 | ### Example |
| 3665 | |
| 3666 | <div><fiddle-embed name="2df932f526e810f74c89d30ec3f4c947"> |
| 3667 | |
| 3668 | #### Example Output |
| 3669 | |
| 3670 | ~~~~ |
| 3671 | kLeft_Align == default |
| 3672 | ~~~~ |
| 3673 | |
| 3674 | </fiddle-embed></div> |
| 3675 | |
| 3676 | --- |
| 3677 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3678 | <a name="SkPaint_setTextAlign"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3679 | ## setTextAlign |
| 3680 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3681 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3682 | void setTextAlign(Align align) |
| 3683 | </pre> |
| 3684 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3685 | Sets <a href="#Text_Align">Text Align</a> to <a href="#SkPaint_setTextAlign_align">align</a>. |
| 3686 | Has no effect if <a href="#SkPaint_setTextAlign_align">align</a> is an invalid value. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3687 | |
| 3688 | ### Parameters |
| 3689 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3690 | <table> <tr> <td><a name="SkPaint_setTextAlign_align"> <code><strong>align </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3691 | text placement relative to position</td> |
| 3692 | </tr> |
| 3693 | </table> |
| 3694 | |
| 3695 | ### Example |
| 3696 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3697 | <div><fiddle-embed name="d37540afd918506ac2594665ca63979b"><div><a href="undocumented#Text">Text</a> is left-aligned by default, and then set to center. Setting the |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 3698 | alignment out of range has no effect. |
| 3699 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3700 | |
| 3701 | --- |
| 3702 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3703 | ## <a name="Text_Size"></a> Text Size |
| 3704 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3705 | <a href="#Text_Size">Text Size</a> adjusts the overall text size in points. |
| 3706 | <a href="#Text_Size">Text Size</a> can be set to any positive value or zero. |
| 3707 | <a href="#Text_Size">Text Size</a> defaults to 12. |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3708 | Set <a href="undocumented#SkPaintDefaults_TextSize">SkPaintDefaults TextSize</a> at compile time to change the default setting. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3709 | |
| 3710 | ### Example |
| 3711 | |
| 3712 | <div><fiddle-embed name="91c9a3e498bb9412e4522a95d076ed5f"></fiddle-embed></div> |
| 3713 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3714 | <a name="SkPaint_getTextSize"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3715 | ## getTextSize |
| 3716 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3717 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3718 | SkScalar getTextSize() const |
| 3719 | </pre> |
| 3720 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3721 | Returns <a href="#Text_Size">Text Size</a> in points. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3722 | |
| 3723 | ### Return Value |
| 3724 | |
| 3725 | typographic height of text |
| 3726 | |
| 3727 | ### Example |
| 3728 | |
| 3729 | <div><fiddle-embed name="983e2a71ba72d4ba8c945420040b8f1c"></fiddle-embed></div> |
| 3730 | |
| 3731 | --- |
| 3732 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3733 | <a name="SkPaint_setTextSize"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3734 | ## setTextSize |
| 3735 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3736 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3737 | void setTextSize(SkScalar textSize) |
| 3738 | </pre> |
| 3739 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3740 | Sets <a href="#Text_Size">Text Size</a> in points. |
| 3741 | Has no effect if <a href="#SkPaint_setTextSize_textSize">textSize</a> is not greater than or equal to zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3742 | |
| 3743 | ### Parameters |
| 3744 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3745 | <table> <tr> <td><a name="SkPaint_setTextSize_textSize"> <code><strong>textSize </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3746 | typographic height of text</td> |
| 3747 | </tr> |
| 3748 | </table> |
| 3749 | |
| 3750 | ### Example |
| 3751 | |
| 3752 | <div><fiddle-embed name="6510c9e2f57b83c47e67829e7a68d493"></fiddle-embed></div> |
| 3753 | |
| 3754 | --- |
| 3755 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3756 | ## <a name="Text_Scale_X"></a> Text Scale X |
| 3757 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3758 | <a href="#Text_Scale_X">Text Scale X</a> adjusts the text horizontal scale. |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3759 | <a href="undocumented#Text">Text</a> scaling approximates condensed and expanded type faces when the actual face |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3760 | is not available. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3761 | <a href="#Text_Scale_X">Text Scale X</a> can be set to any value. |
| 3762 | <a href="#Text_Scale_X">Text Scale X</a> defaults to 1. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3763 | |
| 3764 | ### Example |
| 3765 | |
| 3766 | <div><fiddle-embed name="d13d787c1e36f515319fc998411c1d91"></fiddle-embed></div> |
| 3767 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3768 | <a name="SkPaint_getTextScaleX"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3769 | ## getTextScaleX |
| 3770 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3771 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3772 | SkScalar getTextScaleX() const |
| 3773 | </pre> |
| 3774 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3775 | Returns <a href="#Text_Scale_X">Text Scale X</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3776 | Default value is 1. |
| 3777 | |
| 3778 | ### Return Value |
| 3779 | |
| 3780 | text horizontal scale |
| 3781 | |
| 3782 | ### Example |
| 3783 | |
| 3784 | <div><fiddle-embed name="5dc8e58f6910cb8e4de9ed60f888188b"></fiddle-embed></div> |
| 3785 | |
| 3786 | --- |
| 3787 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3788 | <a name="SkPaint_setTextScaleX"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3789 | ## setTextScaleX |
| 3790 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3791 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3792 | void setTextScaleX(SkScalar scaleX) |
| 3793 | </pre> |
| 3794 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3795 | Sets <a href="#Text_Scale_X">Text Scale X</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3796 | Default value is 1. |
| 3797 | |
| 3798 | ### Parameters |
| 3799 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3800 | <table> <tr> <td><a name="SkPaint_setTextScaleX_scaleX"> <code><strong>scaleX </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3801 | text horizontal scale</td> |
| 3802 | </tr> |
| 3803 | </table> |
| 3804 | |
| 3805 | ### Example |
| 3806 | |
| 3807 | <div><fiddle-embed name="a75bbdb8bb866b125c4c1dd5e967d470"></fiddle-embed></div> |
| 3808 | |
| 3809 | --- |
| 3810 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3811 | ## <a name="Text_Skew_X"></a> Text Skew X |
| 3812 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3813 | <a href="#Text_Skew_X">Text Skew X</a> adjusts the text horizontal slant. |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3814 | <a href="undocumented#Text">Text</a> skewing approximates italic and oblique type faces when the actual face |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3815 | is not available. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3816 | <a href="#Text_Skew_X">Text Skew X</a> can be set to any value. |
| 3817 | <a href="#Text_Skew_X">Text Skew X</a> defaults to 0. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3818 | |
| 3819 | ### Example |
| 3820 | |
| 3821 | <div><fiddle-embed name="aff208b0aab265f273045b27e683c17c"></fiddle-embed></div> |
| 3822 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3823 | <a name="SkPaint_getTextSkewX"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3824 | ## getTextSkewX |
| 3825 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3826 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3827 | SkScalar getTextSkewX() const |
| 3828 | </pre> |
| 3829 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3830 | Returns <a href="#Text_Skew_X">Text Skew X</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3831 | Default value is zero. |
| 3832 | |
| 3833 | ### Return Value |
| 3834 | |
| 3835 | additional shear in x-axis relative to y-axis |
| 3836 | |
| 3837 | ### Example |
| 3838 | |
| 3839 | <div><fiddle-embed name="11c10f466dae0d1639dbb9f6a0040218"></fiddle-embed></div> |
| 3840 | |
| 3841 | --- |
| 3842 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3843 | <a name="SkPaint_setTextSkewX"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3844 | ## setTextSkewX |
| 3845 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3846 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3847 | void setTextSkewX(SkScalar skewX) |
| 3848 | </pre> |
| 3849 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3850 | Sets <a href="#Text_Skew_X">Text Skew X</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3851 | Default value is zero. |
| 3852 | |
| 3853 | ### Parameters |
| 3854 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3855 | <table> <tr> <td><a name="SkPaint_setTextSkewX_skewX"> <code><strong>skewX </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3856 | additional shear in x-axis relative to y-axis</td> |
| 3857 | </tr> |
| 3858 | </table> |
| 3859 | |
| 3860 | ### Example |
| 3861 | |
| 3862 | <div><fiddle-embed name="6bd705a6e0c5f8ee24f302fe531bfabc"></fiddle-embed></div> |
| 3863 | |
| 3864 | --- |
| 3865 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3866 | ## <a name="Text_Encoding"></a> Text Encoding |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3867 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3868 | ## <a name="SkPaint_TextEncoding"></a> Enum SkPaint::TextEncoding |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3869 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3870 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3871 | enum <a href="#SkPaint_TextEncoding">TextEncoding</a> { |
| 3872 | <a href="#SkPaint_kUTF8_TextEncoding">kUTF8 TextEncoding</a>, |
| 3873 | <a href="#SkPaint_kUTF16_TextEncoding">kUTF16 TextEncoding</a>, |
| 3874 | <a href="#SkPaint_kUTF32_TextEncoding">kUTF32 TextEncoding</a>, |
| 3875 | <a href="#SkPaint_kGlyphID_TextEncoding">kGlyphID TextEncoding</a>, |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 3876 | }; |
| 3877 | </pre> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3878 | |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3879 | <a href="#SkPaint_TextEncoding">TextEncoding</a> determines whether text specifies character codes and their encoded |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3880 | size, or glyph indices. Characters are encoded as specified by the <a href="http://unicode.org/standard/standard.html">Unicode standard</a> . |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3881 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3882 | Character codes encoded size are specified by UTF-8, UTF-16, or UTF-32. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3883 | All character code formats are able to represent all of Unicode, differing only |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3884 | in the total storage required. |
| 3885 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3886 | <a href="https://tools.ietf.org/html/rfc3629">UTF-8 (RFC 3629)</a> encodes each character as one or more 8-bit bytes. |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3887 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3888 | <a href="https://tools.ietf.org/html/rfc2781">UTF-16 (RFC 2781)</a> encodes each character as one or two 16-bit words. |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3889 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3890 | <a href="http://www.unicode.org/versions/Unicode5.0.0/ch03.pdf">UTF-32</a> encodes each character as one 32-bit word. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3891 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3892 | <a href="undocumented#Font_Manager">Font Manager</a> uses font data to convert character code points into glyph indices. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3893 | A glyph index is a 16-bit word. |
| 3894 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3895 | <a href="#SkPaint_TextEncoding">TextEncoding</a> is set to <a href="#SkPaint_kUTF8_TextEncoding">kUTF8 TextEncoding</a> by default. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3896 | |
| 3897 | ### Constants |
| 3898 | |
| 3899 | <table> |
| 3900 | <tr> |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 3901 | <td><a name="SkPaint_kUTF8_TextEncoding"> <code><strong>SkPaint::kUTF8_TextEncoding </strong></code> </a></td><td>0</td><td>Uses bytes to represent UTF-8 or ASCII. |
| 3902 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3903 | </tr> |
| 3904 | <tr> |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 3905 | <td><a name="SkPaint_kUTF16_TextEncoding"> <code><strong>SkPaint::kUTF16_TextEncoding </strong></code> </a></td><td>1</td><td>Uses two byte words to represent most of Unicode. |
| 3906 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3907 | </tr> |
| 3908 | <tr> |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 3909 | <td><a name="SkPaint_kUTF32_TextEncoding"> <code><strong>SkPaint::kUTF32_TextEncoding </strong></code> </a></td><td>2</td><td>Uses four byte words to represent all of Unicode. |
| 3910 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3911 | </tr> |
| 3912 | <tr> |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 3913 | <td><a name="SkPaint_kGlyphID_TextEncoding"> <code><strong>SkPaint::kGlyphID_TextEncoding </strong></code> </a></td><td>3</td><td>Uses two byte words to represent glyph indices. |
| 3914 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3915 | </tr> |
| 3916 | |
| 3917 | </table> |
| 3918 | |
| 3919 | ### Example |
| 3920 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3921 | <div><fiddle-embed name="b29294e7f29d160a1b46abf2dcec9d2a"><div>First line is encoded in UTF-8. |
| 3922 | Second line is encoded in UTF-16. |
| 3923 | Third line is encoded in UTF-32. |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 3924 | Fourth line has 16 bit glyph indices. |
| 3925 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3926 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3927 | <a name="SkPaint_getTextEncoding"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3928 | ## getTextEncoding |
| 3929 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3930 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3931 | TextEncoding getTextEncoding() const |
| 3932 | </pre> |
| 3933 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3934 | Returns <a href="#Text_Encoding">Text Encoding</a>. |
| 3935 | <a href="#Text_Encoding">Text Encoding</a> determines how character code points are mapped to font glyph indices. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3936 | |
| 3937 | ### Return Value |
| 3938 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3939 | one of: <a href="#SkPaint_kUTF8_TextEncoding">kUTF8 TextEncoding</a>, <a href="#SkPaint_kUTF16_TextEncoding">kUTF16 TextEncoding</a>, <a href="#SkPaint_kUTF32_TextEncoding">kUTF32 TextEncoding</a>, or |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3940 | <a href="#SkPaint_kGlyphID_TextEncoding">kGlyphID TextEncoding</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3941 | |
| 3942 | ### Example |
| 3943 | |
| 3944 | <div><fiddle-embed name="70ad28bbf7668b38474d7f225e3540bc"> |
| 3945 | |
| 3946 | #### Example Output |
| 3947 | |
| 3948 | ~~~~ |
| 3949 | kUTF8_TextEncoding == text encoding |
| 3950 | kGlyphID_TextEncoding == text encoding |
| 3951 | ~~~~ |
| 3952 | |
| 3953 | </fiddle-embed></div> |
| 3954 | |
| 3955 | --- |
| 3956 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3957 | <a name="SkPaint_setTextEncoding"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3958 | ## setTextEncoding |
| 3959 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3960 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3961 | void setTextEncoding(TextEncoding encoding) |
| 3962 | </pre> |
| 3963 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3964 | Sets <a href="#Text_Encoding">Text Encoding</a> to <a href="#SkPaint_setTextEncoding_encoding">encoding</a>. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3965 | <a href="#Text_Encoding">Text Encoding</a> determines how character code points are mapped to font glyph indices. |
| 3966 | Invalid values for <a href="#SkPaint_setTextEncoding_encoding">encoding</a> are ignored. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3967 | |
| 3968 | ### Parameters |
| 3969 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3970 | <table> <tr> <td><a name="SkPaint_setTextEncoding_encoding"> <code><strong>encoding </strong></code> </a></td> <td> |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3971 | one of: <a href="#SkPaint_kUTF8_TextEncoding">kUTF8 TextEncoding</a>, <a href="#SkPaint_kUTF16_TextEncoding">kUTF16 TextEncoding</a>, <a href="#SkPaint_kUTF32_TextEncoding">kUTF32 TextEncoding</a>, or |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3972 | <a href="#SkPaint_kGlyphID_TextEncoding">kGlyphID TextEncoding</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3973 | </tr> |
Cary Clark | bad5ad7 | 2017-08-03 17:14:08 -0400 | [diff] [blame] | 3974 | # |
| 3975 | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3976 | </table> |
| 3977 | |
| 3978 | ### Example |
| 3979 | |
| 3980 | <div><fiddle-embed name="329b92fbc35151dee9aa0c0e70107665"> |
| 3981 | |
| 3982 | #### Example Output |
| 3983 | |
| 3984 | ~~~~ |
| 3985 | 4 != text encoding |
| 3986 | ~~~~ |
| 3987 | |
| 3988 | </fiddle-embed></div> |
| 3989 | |
| 3990 | --- |
| 3991 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3992 | ## <a name="Font_Metrics"></a> Font Metrics |
| 3993 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 3994 | <a href="#Font_Metrics">Font Metrics</a> describe dimensions common to the <a href="undocumented#Glyph">Glyphs</a> in <a href="undocumented#Typeface">Typeface</a>. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3995 | The dimensions are computed by <a href="undocumented#Font_Manager">Font Manager</a> from font data and do not take |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3996 | <a href="#Paint">Paint</a> settings other than <a href="#Text_Size">Text Size</a> into account. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3997 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3998 | <a href="undocumented#Font">Font</a> dimensions specify the anchor to the left of the glyph at baseline as the origin. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3999 | X-axis values to the left of the glyph are negative, and to the right of the left glyph edge |
| 4000 | are positive. |
| 4001 | Y-axis values above the baseline are negative, and below the baseline are positive. |
| 4002 | |
| 4003 | ### Example |
| 4004 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4005 | <div><fiddle-embed name="2bfa3783719fcd769af177a1b244e171"></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4006 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4007 | # <a name="SkPaint_FontMetrics"></a> Struct SkPaint::FontMetrics |
Cary Clark | e4aa371 | 2017-09-15 02:56:12 -0400 | [diff] [blame] | 4008 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4009 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4010 | struct <a href="#SkPaint_FontMetrics">FontMetrics</a> { |
| 4011 | enum <a href="#SkPaint_FontMetrics_FontMetricsFlags">FontMetricsFlags</a> { |
| 4012 | <a href="#SkPaint_FontMetrics_kUnderlineThicknessIsValid_Flag">kUnderlineThicknessIsValid Flag</a> = 1 << 0, |
| 4013 | <a href="#SkPaint_FontMetrics_kUnderlinePositionIsValid_Flag">kUnderlinePositionIsValid Flag</a> = 1 << 1, |
| 4014 | <a href="#SkPaint_FontMetrics_kStrikeoutThicknessIsValid_Flag">kStrikeoutThicknessIsValid Flag</a> = 1 << 2, |
| 4015 | <a href="#SkPaint_FontMetrics_kStrikeoutPositionIsValid_Flag">kStrikeoutPositionIsValid Flag</a> = 1 << 3, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4016 | }; |
| 4017 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4018 | uint32_t <a href="#SkPaint_FontMetrics_fFlags">fFlags</a>; |
| 4019 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fTop">fTop</a>; |
| 4020 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fAscent">fAscent</a>; |
| 4021 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fDescent">fDescent</a>; |
| 4022 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fBottom">fBottom</a>; |
| 4023 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fLeading">fLeading</a>; |
| 4024 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fAvgCharWidth">fAvgCharWidth</a>; |
| 4025 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fMaxCharWidth">fMaxCharWidth</a>; |
| 4026 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fXMin">fXMin</a>; |
| 4027 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fXMax">fXMax</a>; |
| 4028 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fXHeight">fXHeight</a>; |
| 4029 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fCapHeight">fCapHeight</a>; |
| 4030 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fUnderlineThickness">fUnderlineThickness</a>; |
| 4031 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fUnderlinePosition">fUnderlinePosition</a>; |
| 4032 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fStrikeoutThickness">fStrikeoutThickness</a>; |
| 4033 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fStrikeoutPosition">fStrikeoutPosition</a>; |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4034 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4035 | bool <a href="#SkPaint_FontMetrics_hasUnderlineThickness">hasUnderlineThickness(SkScalar* thickness)</a> const; |
| 4036 | bool <a href="#SkPaint_FontMetrics_hasUnderlinePosition">hasUnderlinePosition(SkScalar* position)</a> const; |
| 4037 | bool <a href="#SkPaint_FontMetrics_hasStrikeoutThickness">hasStrikeoutThickness(SkScalar* thickness)</a> const; |
| 4038 | bool <a href="#SkPaint_FontMetrics_hasStrikeoutPosition">hasStrikeoutPosition(SkScalar* position)</a> const; |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 4039 | }; |
| 4040 | </pre> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4041 | |
Cary Clark | 154beea | 2017-10-26 07:58:48 -0400 | [diff] [blame] | 4042 | <a href="#SkPaint_FontMetrics">FontMetrics</a> is filled out by <a href="#SkPaint_getFontMetrics">getFontMetrics</a>. <a href="#SkPaint_FontMetrics">FontMetrics</a> contents reflect the values |
| 4043 | computed by <a href="undocumented#Font_Manager">Font Manager</a> using <a href="undocumented#Typeface">Typeface</a>. Values are set to zero if they are |
| 4044 | not available. |
| 4045 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4046 | All vertical values relative to the baseline are given y-down. As such, zero is on the |
| 4047 | baseline, negative values are above the baseline, and positive values are below the |
| 4048 | baseline. |
| 4049 | |
Cary Clark | 154beea | 2017-10-26 07:58:48 -0400 | [diff] [blame] | 4050 | <a href="#SkPaint_FontMetrics_fUnderlineThickness">fUnderlineThickness</a> and <a href="#SkPaint_FontMetrics_fUnderlinePosition">fUnderlinePosition</a> have a bit set in <a href="#SkPaint_FontMetrics_fFlags">fFlags</a> if their values |
| 4051 | are valid, since their value may be zero. |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4052 | |
Cary Clark | 154beea | 2017-10-26 07:58:48 -0400 | [diff] [blame] | 4053 | <a href="#SkPaint_FontMetrics_fStrikeoutThickness">fStrikeoutThickness</a> and <a href="#SkPaint_FontMetrics_fStrikeoutPosition">fStrikeoutPosition</a> have a bit set in <a href="#SkPaint_FontMetrics_fFlags">fFlags</a> if their values |
| 4054 | are valid, since their value may be zero. |
| 4055 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4056 | ## <a name="SkPaint_FontMetrics_FontMetricsFlags"></a> Enum SkPaint::FontMetrics::FontMetricsFlags |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4057 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4058 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4059 | enum <a href="#SkPaint_FontMetrics_FontMetricsFlags">FontMetricsFlags</a> { |
| 4060 | <a href="#SkPaint_FontMetrics_kUnderlineThicknessIsValid_Flag">kUnderlineThicknessIsValid Flag</a> = 1 << 0, |
| 4061 | <a href="#SkPaint_FontMetrics_kUnderlinePositionIsValid_Flag">kUnderlinePositionIsValid Flag</a> = 1 << 1, |
| 4062 | <a href="#SkPaint_FontMetrics_kStrikeoutThicknessIsValid_Flag">kStrikeoutThicknessIsValid Flag</a> = 1 << 2, |
| 4063 | <a href="#SkPaint_FontMetrics_kStrikeoutPositionIsValid_Flag">kStrikeoutPositionIsValid Flag</a> = 1 << 3, |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 4064 | }; |
| 4065 | </pre> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4066 | |
Cary Clark | 154beea | 2017-10-26 07:58:48 -0400 | [diff] [blame] | 4067 | <a href="#SkPaint_FontMetrics_FontMetricsFlags">FontMetricsFlags</a> are set in <a href="#SkPaint_FontMetrics_fFlags">fFlags</a> when underline and strikeout metrics are valid; |
| 4068 | the underline or strikeout metric may be valid and zero. |
| 4069 | Fonts with embedded bitmaps may not have valid underline or strikeout metrics. |
| 4070 | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4071 | ### Constants |
| 4072 | |
| 4073 | <table> |
| 4074 | <tr> |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 4075 | <td><a name="SkPaint_FontMetrics_kUnderlineThicknessIsValid_Flag"> <code><strong>SkPaint::FontMetrics::kUnderlineThicknessIsValid_Flag </strong></code> </a></td><td>0x0001</td><td>Set if <a href="#SkPaint_FontMetrics_fUnderlineThickness">fUnderlineThickness</a> is valid. |
| 4076 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4077 | </tr> |
| 4078 | <tr> |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 4079 | <td><a name="SkPaint_FontMetrics_kUnderlinePositionIsValid_Flag"> <code><strong>SkPaint::FontMetrics::kUnderlinePositionIsValid_Flag </strong></code> </a></td><td>0x0002</td><td>Set if <a href="#SkPaint_FontMetrics_fUnderlinePosition">fUnderlinePosition</a> is valid. |
| 4080 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4081 | </tr> |
| 4082 | <tr> |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 4083 | <td><a name="SkPaint_FontMetrics_kStrikeoutThicknessIsValid_Flag"> <code><strong>SkPaint::FontMetrics::kStrikeoutThicknessIsValid_Flag </strong></code> </a></td><td>0x0004</td><td>Set if <a href="#SkPaint_FontMetrics_fStrikeoutThickness">fStrikeoutThickness</a> is valid. |
| 4084 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4085 | </tr> |
| 4086 | <tr> |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 4087 | <td><a name="SkPaint_FontMetrics_kStrikeoutPositionIsValid_Flag"> <code><strong>SkPaint::FontMetrics::kStrikeoutPositionIsValid_Flag </strong></code> </a></td><td>0x0008</td><td>Set if <a href="#SkPaint_FontMetrics_fStrikeoutPosition">fStrikeoutPosition</a> is valid. |
| 4088 | </td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4089 | </tr> |
| 4090 | |
| 4091 | </table> |
| 4092 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4093 | <a name="SkPaint_FontMetrics_fFlags"> <code><strong>uint32_t fFlags</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4094 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4095 | <a href="#SkPaint_FontMetrics_fFlags">fFlags</a> is set when underline metrics are valid. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4096 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4097 | <a name="SkPaint_FontMetrics_fTop"> <code><strong>SkScalar fTop</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4098 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4099 | Greatest extent above the baseline for any glyph. |
| 4100 | Typically less than zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4101 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4102 | <a name="SkPaint_FontMetrics_fAscent"> <code><strong>SkScalar fAscent</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4103 | |
| 4104 | Recommended distance above the baseline to reserve for a line of text. |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4105 | Typically less than zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4106 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4107 | <a name="SkPaint_FontMetrics_fDescent"> <code><strong>SkScalar fDescent</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4108 | |
| 4109 | Recommended distance below the baseline to reserve for a line of text. |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4110 | Typically greater than zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4111 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4112 | <a name="SkPaint_FontMetrics_fBottom"> <code><strong>SkScalar fBottom</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4113 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4114 | Greatest extent below the baseline for any glyph. |
| 4115 | Typically greater than zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4116 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4117 | <a name="SkPaint_FontMetrics_fLeading"> <code><strong>SkScalar fLeading</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4118 | |
| 4119 | Recommended distance to add between lines of text. |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4120 | Typically greater than or equal to zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4121 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4122 | <a name="SkPaint_FontMetrics_fAvgCharWidth"> <code><strong>SkScalar fAvgCharWidth</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4123 | |
| 4124 | Average character width, if it is available. |
| 4125 | Zero if no average width is stored in the font. |
| 4126 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4127 | <a name="SkPaint_FontMetrics_fMaxCharWidth"> <code><strong>SkScalar fMaxCharWidth</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4128 | |
| 4129 | Maximum character width. |
| 4130 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4131 | <a name="SkPaint_FontMetrics_fXMin"> <code><strong>SkScalar fXMin</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4132 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4133 | Minimum bounding box x value for all <a href="undocumented#Glyph">Glyphs</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4134 | Typically less than zero. |
| 4135 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4136 | <a name="SkPaint_FontMetrics_fXMax"> <code><strong>SkScalar fXMax</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4137 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4138 | Maximum bounding box x value for all <a href="undocumented#Glyph">Glyphs</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4139 | Typically greater than zero. |
| 4140 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4141 | <a name="SkPaint_FontMetrics_fXHeight"> <code><strong>SkScalar fXHeight</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4142 | |
| 4143 | Height of a lower-case 'x'. |
| 4144 | May be zero if no lower-case height is stored in the font. |
| 4145 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4146 | <a name="SkPaint_FontMetrics_fCapHeight"> <code><strong>SkScalar fCapHeight</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4147 | |
| 4148 | Height of an upper-case letter. |
| 4149 | May be zero if no upper-case height is stored in the font. |
| 4150 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4151 | <a name="SkPaint_FontMetrics_fUnderlineThickness"> <code><strong>SkScalar fUnderlineThickness</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4152 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4153 | Underline thickness. |
| 4154 | |
| 4155 | If the metric is valid, the <a href="#SkPaint_FontMetrics_kUnderlineThicknessIsValid_Flag">kUnderlineThicknessIsValid Flag</a> is set in <a href="#SkPaint_FontMetrics_fFlags">fFlags</a>. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4156 | If <a href="#SkPaint_FontMetrics_kUnderlineThicknessIsValid_Flag">kUnderlineThicknessIsValid Flag</a> is clear, <a href="#SkPaint_FontMetrics_fUnderlineThickness">fUnderlineThickness</a> is zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4157 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4158 | <a name="SkPaint_FontMetrics_fUnderlinePosition"> <code><strong>SkScalar fUnderlinePosition</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4159 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4160 | Position of the top of the underline stroke relative to the baseline. |
| 4161 | Typically positive when valid. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4162 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4163 | If the metric is valid, the <a href="#SkPaint_FontMetrics_kUnderlinePositionIsValid_Flag">kUnderlinePositionIsValid Flag</a> is set in <a href="#SkPaint_FontMetrics_fFlags">fFlags</a>. |
| 4164 | If <a href="#SkPaint_FontMetrics_kUnderlinePositionIsValid_Flag">kUnderlinePositionIsValid Flag</a> is clear, <a href="#SkPaint_FontMetrics_fUnderlinePosition">fUnderlinePosition</a> is zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4165 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4166 | <a name="SkPaint_FontMetrics_fStrikeoutThickness"> <code><strong>SkScalar fStrikeoutThickness</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4167 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4168 | Strikeout thickness. |
| 4169 | |
| 4170 | If the metric is valid, the <a href="#SkPaint_FontMetrics_kStrikeoutThicknessIsValid_Flag">kStrikeoutThicknessIsValid Flag</a> is set in <a href="#SkPaint_FontMetrics_fFlags">fFlags</a>. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4171 | If <a href="#SkPaint_FontMetrics_kStrikeoutThicknessIsValid_Flag">kStrikeoutThicknessIsValid Flag</a> is clear, <a href="#SkPaint_FontMetrics_fStrikeoutThickness">fStrikeoutThickness</a> is zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4172 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4173 | <a name="SkPaint_FontMetrics_fStrikeoutPosition"> <code><strong>SkScalar fStrikeoutPosition</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4174 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4175 | Position of the bottom of the strikeout stroke relative to the baseline. |
| 4176 | Typically negative when valid. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4177 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4178 | If the metric is valid, the <a href="#SkPaint_FontMetrics_kStrikeoutPositionIsValid_Flag">kStrikeoutPositionIsValid Flag</a> is set in <a href="#SkPaint_FontMetrics_fFlags">fFlags</a>. |
| 4179 | If <a href="#SkPaint_FontMetrics_kStrikeoutPositionIsValid_Flag">kStrikeoutPositionIsValid Flag</a> is clear, <a href="#SkPaint_FontMetrics_fStrikeoutPosition">fStrikeoutPosition</a> is zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4180 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4181 | <a name="SkPaint_FontMetrics_hasUnderlineThickness"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4182 | ## hasUnderlineThickness |
| 4183 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4184 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4185 | bool hasUnderlineThickness(SkScalar* thickness) const |
| 4186 | </pre> |
| 4187 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4188 | If <a href="#Font_Metrics">Font Metrics</a> has a valid underline <a href="#SkPaint_FontMetrics_hasUnderlineThickness_thickness">thickness</a>, return true, and set |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4189 | <a href="#SkPaint_FontMetrics_hasUnderlineThickness_thickness">thickness</a> to that value. If the underline <a href="#SkPaint_FontMetrics_hasUnderlineThickness_thickness">thickness</a> is not valid, |
| 4190 | return false, and ignore <a href="#SkPaint_FontMetrics_hasUnderlineThickness_thickness">thickness</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4191 | |
| 4192 | ### Parameters |
| 4193 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4194 | <table> <tr> <td><a name="SkPaint_FontMetrics_hasUnderlineThickness_thickness"> <code><strong>thickness </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4195 | storage for underline width</td> |
| 4196 | </tr> |
| 4197 | </table> |
| 4198 | |
| 4199 | ### Return Value |
| 4200 | |
| 4201 | true if font specifies underline width |
| 4202 | |
| 4203 | --- |
| 4204 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4205 | <a name="SkPaint_FontMetrics_hasUnderlinePosition"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4206 | ## hasUnderlinePosition |
| 4207 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4208 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4209 | bool hasUnderlinePosition(SkScalar* position) const |
| 4210 | </pre> |
| 4211 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4212 | If <a href="#Font_Metrics">Font Metrics</a> has a valid underline <a href="#SkPaint_FontMetrics_hasUnderlinePosition_position">position</a>, return true, and set |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4213 | <a href="#SkPaint_FontMetrics_hasUnderlinePosition_position">position</a> to that value. If the underline <a href="#SkPaint_FontMetrics_hasUnderlinePosition_position">position</a> is not valid, |
| 4214 | return false, and ignore <a href="#SkPaint_FontMetrics_hasUnderlinePosition_position">position</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4215 | |
| 4216 | ### Parameters |
| 4217 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4218 | <table> <tr> <td><a name="SkPaint_FontMetrics_hasUnderlinePosition_position"> <code><strong>position </strong></code> </a></td> <td> |
| 4219 | storage for underline <a href="#SkPaint_FontMetrics_hasUnderlinePosition_position">position</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4220 | </tr> |
| 4221 | </table> |
| 4222 | |
| 4223 | ### Return Value |
| 4224 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4225 | true if font specifies underline <a href="#SkPaint_FontMetrics_hasUnderlinePosition_position">position</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4226 | |
| 4227 | --- |
| 4228 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4229 | <a name="SkPaint_FontMetrics_hasStrikeoutThickness"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4230 | ## hasStrikeoutThickness |
| 4231 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4232 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4233 | bool hasStrikeoutThickness(SkScalar* thickness) const |
| 4234 | </pre> |
| 4235 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4236 | If <a href="#Font_Metrics">Font Metrics</a> has a valid strikeout <a href="#SkPaint_FontMetrics_hasStrikeoutThickness_thickness">thickness</a>, return true, and set |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4237 | <a href="#SkPaint_FontMetrics_hasStrikeoutThickness_thickness">thickness</a> to that value. If the underline <a href="#SkPaint_FontMetrics_hasStrikeoutThickness_thickness">thickness</a> is not valid, |
| 4238 | return false, and ignore <a href="#SkPaint_FontMetrics_hasStrikeoutThickness_thickness">thickness</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4239 | |
| 4240 | ### Parameters |
| 4241 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4242 | <table> <tr> <td><a name="SkPaint_FontMetrics_hasStrikeoutThickness_thickness"> <code><strong>thickness </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4243 | storage for strikeout width</td> |
| 4244 | </tr> |
| 4245 | </table> |
| 4246 | |
| 4247 | ### Return Value |
| 4248 | |
| 4249 | true if font specifies strikeout width |
| 4250 | |
| 4251 | --- |
| 4252 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4253 | <a name="SkPaint_FontMetrics_hasStrikeoutPosition"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4254 | ## hasStrikeoutPosition |
| 4255 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4256 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4257 | bool hasStrikeoutPosition(SkScalar* position) const |
| 4258 | </pre> |
| 4259 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4260 | If <a href="#Font_Metrics">Font Metrics</a> has a valid strikeout <a href="#SkPaint_FontMetrics_hasStrikeoutPosition_position">position</a>, return true, and set |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4261 | <a href="#SkPaint_FontMetrics_hasStrikeoutPosition_position">position</a> to that value. If the underline <a href="#SkPaint_FontMetrics_hasStrikeoutPosition_position">position</a> is not valid, |
| 4262 | return false, and ignore <a href="#SkPaint_FontMetrics_hasStrikeoutPosition_position">position</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4263 | |
| 4264 | ### Parameters |
| 4265 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4266 | <table> <tr> <td><a name="SkPaint_FontMetrics_hasStrikeoutPosition_position"> <code><strong>position </strong></code> </a></td> <td> |
| 4267 | storage for strikeout <a href="#SkPaint_FontMetrics_hasStrikeoutPosition_position">position</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4268 | </tr> |
| 4269 | </table> |
| 4270 | |
| 4271 | ### Return Value |
| 4272 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4273 | true if font specifies strikeout <a href="#SkPaint_FontMetrics_hasStrikeoutPosition_position">position</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4274 | |
| 4275 | --- |
| 4276 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4277 | <a name="SkPaint_getFontMetrics"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4278 | ## getFontMetrics |
| 4279 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4280 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4281 | SkScalar getFontMetrics(FontMetrics* metrics, SkScalar scale = 0) const |
| 4282 | </pre> |
| 4283 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4284 | Returns <a href="#Font_Metrics">Font Metrics</a> associated with <a href="undocumented#Typeface">Typeface</a>. |
| 4285 | The return value is the recommended spacing between lines: the sum of <a href="#SkPaint_getFontMetrics_metrics">metrics</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4286 | descent, ascent, and leading. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4287 | If <a href="#SkPaint_getFontMetrics_metrics">metrics</a> is not nullptr, <a href="#Font_Metrics">Font Metrics</a> is copied to <a href="#SkPaint_getFontMetrics_metrics">metrics</a>. |
| 4288 | Results are scaled by <a href="#Text_Size">Text Size</a> but does not take into account |
| 4289 | dimensions required by <a href="#Text_Scale_X">Text Scale X</a>, <a href="#Text_Skew_X">Text Skew X</a>, <a href="#Fake_Bold">Fake Bold</a>, |
| 4290 | <a href="#Style_Stroke">Style Stroke</a>, and <a href="undocumented#Path_Effect">Path Effect</a>. |
| 4291 | Results can be additionally scaled by <a href="#SkPaint_getFontMetrics_scale">scale</a>; a <a href="#SkPaint_getFontMetrics_scale">scale</a> of zero |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4292 | is ignored. |
| 4293 | |
| 4294 | ### Parameters |
| 4295 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4296 | <table> <tr> <td><a name="SkPaint_getFontMetrics_metrics"> <code><strong>metrics </strong></code> </a></td> <td> |
| 4297 | storage for <a href="#Font_Metrics">Font Metrics</a> from <a href="undocumented#Typeface">Typeface</a>; may be nullptr</td> |
| 4298 | </tr> <tr> <td><a name="SkPaint_getFontMetrics_scale"> <code><strong>scale </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4299 | additional multiplier for returned values</td> |
| 4300 | </tr> |
| 4301 | </table> |
| 4302 | |
| 4303 | ### Return Value |
| 4304 | |
| 4305 | recommended spacing between lines |
| 4306 | |
| 4307 | ### Example |
| 4308 | |
| 4309 | <div><fiddle-embed name="b899d84caba6607340322d317992d070"></fiddle-embed></div> |
| 4310 | |
| 4311 | ### See Also |
| 4312 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4313 | <a href="#Text_Size">Text Size</a> <a href="undocumented#Typeface">Typeface</a> <a href="#Typeface_Methods">Typeface Methods</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4314 | |
| 4315 | --- |
| 4316 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4317 | <a name="SkPaint_getFontSpacing"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4318 | ## getFontSpacing |
| 4319 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4320 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4321 | SkScalar getFontSpacing() const |
| 4322 | </pre> |
| 4323 | |
| 4324 | Returns the recommended spacing between lines: the sum of metrics |
| 4325 | descent, ascent, and leading. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4326 | Result is scaled by <a href="#Text_Size">Text Size</a> but does not take into account |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 4327 | dimensions required by stroking and <a href="undocumented#Path_Effect">Path Effect</a>. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4328 | Returns the same result as <a href="#SkPaint_getFontMetrics">getFontMetrics</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4329 | |
| 4330 | ### Return Value |
| 4331 | |
| 4332 | recommended spacing between lines |
| 4333 | |
| 4334 | ### Example |
| 4335 | |
| 4336 | <div><fiddle-embed name="424741e26e1b174e43087d67422ce14f"> |
| 4337 | |
| 4338 | #### Example Output |
| 4339 | |
| 4340 | ~~~~ |
| 4341 | textSize: 12 fontSpacing: 13.9688 |
| 4342 | textSize: 18 fontSpacing: 20.9531 |
| 4343 | textSize: 24 fontSpacing: 27.9375 |
| 4344 | textSize: 32 fontSpacing: 37.25 |
| 4345 | ~~~~ |
| 4346 | |
| 4347 | </fiddle-embed></div> |
| 4348 | |
| 4349 | --- |
| 4350 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4351 | <a name="SkPaint_getFontBounds"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4352 | ## getFontBounds |
| 4353 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4354 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4355 | SkRect getFontBounds() const |
| 4356 | </pre> |
| 4357 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4358 | Returns the union of bounds of all <a href="undocumented#Glyph">Glyphs</a>. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4359 | Returned dimensions are computed by <a href="undocumented#Font_Manager">Font Manager</a> from font data, |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4360 | ignoring <a href="#SkPaint_Hinting">Hinting</a>. Includes <a href="#Text_Size">Text Size</a>, <a href="#Text_Scale_X">Text Scale X</a>, |
| 4361 | and <a href="#Text_Skew_X">Text Skew X</a>, but not <a href="#Fake_Bold">Fake Bold</a> or <a href="undocumented#Path_Effect">Path Effect</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4362 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4363 | If <a href="#Text_Size">Text Size</a> is large, <a href="#Text_Scale_X">Text Scale X</a> is one, and <a href="#Text_Skew_X">Text Skew X</a> is zero, |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4364 | returns the same bounds as <a href="#Font_Metrics">Font Metrics</a> { <a href="#SkPaint_FontMetrics_fXMin">FontMetrics::fXMin</a>, |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4365 | <a href="#SkPaint_FontMetrics_fTop">FontMetrics::fTop</a>, <a href="#SkPaint_FontMetrics_fXMax">FontMetrics::fXMax</a>, <a href="#SkPaint_FontMetrics_fBottom">FontMetrics::fBottom</a> }. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4366 | |
| 4367 | ### Return Value |
| 4368 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4369 | union of bounds of all <a href="undocumented#Glyph">Glyphs</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4370 | |
| 4371 | ### Example |
| 4372 | |
| 4373 | <div><fiddle-embed name="facaddeec7943bc491988e345e27e65f"> |
| 4374 | |
| 4375 | #### Example Output |
| 4376 | |
| 4377 | ~~~~ |
| 4378 | metrics bounds = { -12.2461, -14.7891, 21.5215, 5.55469 } |
| 4379 | font bounds = { -12.2461, -14.7891, 21.5215, 5.55469 } |
| 4380 | ~~~~ |
| 4381 | |
| 4382 | </fiddle-embed></div> |
| 4383 | |
| 4384 | --- |
| 4385 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4386 | <a name="SkPaint_textToGlyphs"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4387 | ## textToGlyphs |
| 4388 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4389 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4390 | int textToGlyphs(const void* text, size_t byteLength, SkGlyphID glyphs[]) const |
| 4391 | </pre> |
| 4392 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4393 | Converts <a href="#SkPaint_textToGlyphs_text">text</a> into glyph indices. |
| 4394 | Returns the number of glyph indices represented by <a href="#SkPaint_textToGlyphs_text">text</a>. |
| 4395 | <a href="#Text_Encoding">Text Encoding</a> specifies how <a href="#SkPaint_textToGlyphs_text">text</a> represents characters or <a href="#SkPaint_textToGlyphs_glyphs">glyphs</a>. |
| 4396 | <a href="#SkPaint_textToGlyphs_glyphs">glyphs</a> may be nullptr, to compute the glyph count. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4397 | |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 4398 | Does not check <a href="#SkPaint_textToGlyphs_text">text</a> for valid character codes or valid glyph indices. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4399 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4400 | If <a href="#SkPaint_textToGlyphs_byteLength">byteLength</a> equals zero, returns zero. |
| 4401 | If <a href="#SkPaint_textToGlyphs_byteLength">byteLength</a> includes a partial character, the partial character is ignored. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4402 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4403 | If <a href="#Text_Encoding">Text Encoding</a> is <a href="#SkPaint_kUTF8_TextEncoding">kUTF8 TextEncoding</a> and |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4404 | <a href="#SkPaint_textToGlyphs_text">text</a> contains an invalid UTF-8 sequence, zero is returned. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4405 | |
| 4406 | ### Parameters |
| 4407 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4408 | <table> <tr> <td><a name="SkPaint_textToGlyphs_text"> <code><strong>text </strong></code> </a></td> <td> |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4409 | character storage encoded with <a href="#Text_Encoding">Text Encoding</a></td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4410 | </tr> <tr> <td><a name="SkPaint_textToGlyphs_byteLength"> <code><strong>byteLength </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4411 | length of character storage in bytes</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4412 | </tr> <tr> <td><a name="SkPaint_textToGlyphs_glyphs"> <code><strong>glyphs </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4413 | storage for glyph indices; may be nullptr</td> |
| 4414 | </tr> |
| 4415 | </table> |
| 4416 | |
| 4417 | ### Return Value |
| 4418 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4419 | number of <a href="#SkPaint_textToGlyphs_glyphs">glyphs</a> represented by <a href="#SkPaint_textToGlyphs_text">text</a> of length <a href="#SkPaint_textToGlyphs_byteLength">byteLength</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4420 | |
| 4421 | ### Example |
| 4422 | |
| 4423 | <div><fiddle-embed name="343e9471a7f7b5f09abdc3b44983433b"></fiddle-embed></div> |
| 4424 | |
| 4425 | --- |
| 4426 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4427 | <a name="SkPaint_countText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4428 | ## countText |
| 4429 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4430 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4431 | int countText(const void* text, size_t byteLength) const |
| 4432 | </pre> |
| 4433 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4434 | Returns the number of <a href="undocumented#Glyph">Glyphs</a> in <a href="#SkPaint_countText_text">text</a>. |
| 4435 | Uses <a href="#Text_Encoding">Text Encoding</a> to count the <a href="undocumented#Glyph">Glyphs</a>. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4436 | Returns the same result as <a href="#SkPaint_textToGlyphs">textToGlyphs</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4437 | |
| 4438 | ### Parameters |
| 4439 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4440 | <table> <tr> <td><a name="SkPaint_countText_text"> <code><strong>text </strong></code> </a></td> <td> |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4441 | character storage encoded with <a href="#Text_Encoding">Text Encoding</a></td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4442 | </tr> <tr> <td><a name="SkPaint_countText_byteLength"> <code><strong>byteLength </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4443 | length of character storage in bytes</td> |
| 4444 | </tr> |
| 4445 | </table> |
| 4446 | |
| 4447 | ### Return Value |
| 4448 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4449 | number of <a href="undocumented#Glyph">Glyphs</a> represented by <a href="#SkPaint_countText_text">text</a> of length <a href="#SkPaint_countText_byteLength">byteLength</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4450 | |
| 4451 | ### Example |
| 4452 | |
| 4453 | <div><fiddle-embed name="85436c71aab5410767fc688ab0573e09"> |
| 4454 | |
| 4455 | #### Example Output |
| 4456 | |
| 4457 | ~~~~ |
| 4458 | count = 5 |
| 4459 | ~~~~ |
| 4460 | |
| 4461 | </fiddle-embed></div> |
| 4462 | |
| 4463 | --- |
| 4464 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4465 | <a name="SkPaint_containsText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4466 | ## containsText |
| 4467 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4468 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4469 | bool containsText(const void* text, size_t byteLength) const |
| 4470 | </pre> |
| 4471 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4472 | Returns true if all <a href="#SkPaint_containsText_text">text</a> corresponds to a non-zero glyph index. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4473 | Returns false if any characters in <a href="#SkPaint_containsText_text">text</a> are not supported in |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 4474 | <a href="undocumented#Typeface">Typeface</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4475 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4476 | If <a href="#Text_Encoding">Text Encoding</a> is <a href="#SkPaint_kGlyphID_TextEncoding">kGlyphID TextEncoding</a>, |
| 4477 | returns true if all glyph indices in <a href="#SkPaint_containsText_text">text</a> are non-zero; |
| 4478 | does not check to see if <a href="#SkPaint_containsText_text">text</a> contains valid glyph indices for <a href="undocumented#Typeface">Typeface</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4479 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4480 | Returns true if <a href="#SkPaint_containsText_byteLength">byteLength</a> is zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4481 | |
| 4482 | ### Parameters |
| 4483 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4484 | <table> <tr> <td><a name="SkPaint_containsText_text"> <code><strong>text </strong></code> </a></td> <td> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4485 | array of characters or <a href="undocumented#Glyph">Glyphs</a></td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4486 | </tr> <tr> <td><a name="SkPaint_containsText_byteLength"> <code><strong>byteLength </strong></code> </a></td> <td> |
| 4487 | number of bytes in <a href="#SkPaint_containsText_text">text</a> array</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4488 | </tr> |
| 4489 | </table> |
| 4490 | |
| 4491 | ### Return Value |
| 4492 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4493 | true if all <a href="#SkPaint_containsText_text">text</a> corresponds to a non-zero glyph index |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4494 | |
| 4495 | ### Example |
| 4496 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4497 | <div><fiddle-embed name="9202369019552f09cd4bec7f3046fee4"><div><a href="#SkPaint_containsText">containsText</a> succeeds for degree symbol, but cannot find a glyph index |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 4498 | corresponding to the Unicode surrogate code point. |
| 4499 | </div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4500 | |
| 4501 | #### Example Output |
| 4502 | |
| 4503 | ~~~~ |
| 4504 | 0x00b0 == has char |
| 4505 | 0xd800 != has char |
| 4506 | ~~~~ |
| 4507 | |
| 4508 | </fiddle-embed></div> |
| 4509 | |
| 4510 | ### Example |
| 4511 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4512 | <div><fiddle-embed name="904227febfd1c2e264955da0ef66da73"><div><a href="#SkPaint_containsText">containsText</a> returns true that glyph index is greater than zero, not |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 4513 | that it corresponds to an entry in <a href="undocumented#Typeface">Typeface</a>. |
| 4514 | </div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4515 | |
| 4516 | #### Example Output |
| 4517 | |
| 4518 | ~~~~ |
| 4519 | 0x01ff == has glyph |
| 4520 | 0x0000 != has glyph |
| 4521 | 0xffff == has glyph |
| 4522 | ~~~~ |
| 4523 | |
| 4524 | </fiddle-embed></div> |
| 4525 | |
| 4526 | ### See Also |
| 4527 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4528 | <a href="#SkPaint_setTextEncoding">setTextEncoding</a> <a href="undocumented#Typeface">Typeface</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4529 | |
| 4530 | --- |
| 4531 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4532 | <a name="SkPaint_glyphsToUnichars"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4533 | ## glyphsToUnichars |
| 4534 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4535 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4536 | void glyphsToUnichars(const SkGlyphID glyphs[], int count, SkUnichar text[]) const |
| 4537 | </pre> |
| 4538 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4539 | Converts <a href="#SkPaint_glyphsToUnichars_glyphs">glyphs</a> into <a href="#SkPaint_glyphsToUnichars_text">text</a> if possible. |
| 4540 | <a href="undocumented#Glyph">Glyph</a> values without direct Unicode equivalents are mapped to zero. |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 4541 | Uses the <a href="undocumented#Typeface">Typeface</a>, but is unaffected |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4542 | by <a href="#Text_Encoding">Text Encoding</a>; the <a href="#SkPaint_glyphsToUnichars_text">text</a> values returned are equivalent to <a href="#SkPaint_kUTF32_TextEncoding">kUTF32 TextEncoding</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4543 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4544 | Only supported on platforms that use FreeType as the <a href="undocumented#Engine">Font Engine</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4545 | |
| 4546 | ### Parameters |
| 4547 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4548 | <table> <tr> <td><a name="SkPaint_glyphsToUnichars_glyphs"> <code><strong>glyphs </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4549 | array of indices into font</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4550 | </tr> <tr> <td><a name="SkPaint_glyphsToUnichars_count"> <code><strong>count </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4551 | length of glyph array</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4552 | </tr> <tr> <td><a name="SkPaint_glyphsToUnichars_text"> <code><strong>text </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4553 | storage for character codes, one per glyph</td> |
| 4554 | </tr> |
| 4555 | </table> |
| 4556 | |
| 4557 | ### Example |
| 4558 | |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 4559 | <div><fiddle-embed name="c12686b0b3e0a87d0a248bbfc57e9492"><div>Convert UTF-8 <a href="#SkPaint_glyphsToUnichars_text">text</a> to <a href="#SkPaint_glyphsToUnichars_glyphs">glyphs</a>; then convert <a href="#SkPaint_glyphsToUnichars_glyphs">glyphs</a> to Unichar code points. |
| 4560 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4561 | |
| 4562 | --- |
| 4563 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 4564 | ## <a name="Measure_Text"></a> Measure Text |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4565 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4566 | <a name="SkPaint_measureText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4567 | ## measureText |
| 4568 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4569 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4570 | SkScalar measureText(const void* text, size_t length, SkRect* bounds) const |
| 4571 | </pre> |
| 4572 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4573 | Returns the advance width of <a href="#SkPaint_measureText_text">text</a> if <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> is clear, |
| 4574 | and the height of <a href="#SkPaint_measureText_text">text</a> if <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> is set. |
| 4575 | The advance is the normal distance to move before drawing additional <a href="#SkPaint_measureText_text">text</a>. |
| 4576 | Uses <a href="#Text_Encoding">Text Encoding</a> to decode <a href="#SkPaint_measureText_text">text</a>, <a href="undocumented#Typeface">Typeface</a> to get the font metrics, |
| 4577 | and <a href="#Text_Size">Text Size</a>, <a href="#Text_Scale_X">Text Scale X</a>, <a href="#Text_Skew_X">Text Skew X</a>, <a href="#Stroke_Width">Stroke Width</a>, and |
| 4578 | <a href="undocumented#Path_Effect">Path Effect</a> to scale the metrics and <a href="#SkPaint_measureText_bounds">bounds</a>. |
| 4579 | Returns the bounding box of <a href="#SkPaint_measureText_text">text</a> if <a href="#SkPaint_measureText_bounds">bounds</a> is not nullptr. |
| 4580 | The bounding box is computed as if the <a href="#SkPaint_measureText_text">text</a> was drawn at the origin. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4581 | |
| 4582 | ### Parameters |
| 4583 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4584 | <table> <tr> <td><a name="SkPaint_measureText_text"> <code><strong>text </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4585 | character codes or glyph indices to be measured</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4586 | </tr> <tr> <td><a name="SkPaint_measureText_length"> <code><strong>length </strong></code> </a></td> <td> |
| 4587 | number of bytes of <a href="#SkPaint_measureText_text">text</a> to measure</td> |
| 4588 | </tr> <tr> <td><a name="SkPaint_measureText_bounds"> <code><strong>bounds </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4589 | returns bounding box relative to (0, 0) if not nullptr</td> |
| 4590 | </tr> |
| 4591 | </table> |
| 4592 | |
| 4593 | ### Return Value |
| 4594 | |
| 4595 | advance width or height |
| 4596 | |
| 4597 | ### Example |
| 4598 | |
| 4599 | <div><fiddle-embed name="06084f609184470135a9cd9ebc5af149"></fiddle-embed></div> |
| 4600 | |
| 4601 | --- |
| 4602 | |
Cary Clark | 2dc84ad | 2018-01-26 12:56:22 -0500 | [diff] [blame] | 4603 | <a name="SkPaint_measureText_2"></a> |
| 4604 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4605 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4606 | SkScalar measureText(const void* text, size_t length) const |
| 4607 | </pre> |
| 4608 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4609 | Returns the advance width of <a href="#SkPaint_measureText_2_text">text</a> if <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> is clear, |
| 4610 | and the height of <a href="#SkPaint_measureText_2_text">text</a> if <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> is set. |
| 4611 | The advance is the normal distance to move before drawing additional <a href="#SkPaint_measureText_2_text">text</a>. |
| 4612 | Uses <a href="#Text_Encoding">Text Encoding</a> to decode <a href="#SkPaint_measureText_2_text">text</a>, <a href="undocumented#Typeface">Typeface</a> to get the font metrics, |
| 4613 | and <a href="#Text_Size">Text Size</a> to scale the metrics. |
| 4614 | Does not scale the advance or bounds by <a href="#Fake_Bold">Fake Bold</a> or <a href="undocumented#Path_Effect">Path Effect</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4615 | |
| 4616 | ### Parameters |
| 4617 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4618 | <table> <tr> <td><a name="SkPaint_measureText_2_text"> <code><strong>text </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4619 | character codes or glyph indices to be measured</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4620 | </tr> <tr> <td><a name="SkPaint_measureText_2_length"> <code><strong>length </strong></code> </a></td> <td> |
| 4621 | number of bytes of <a href="#SkPaint_measureText_2_text">text</a> to measure</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4622 | </tr> |
| 4623 | </table> |
| 4624 | |
| 4625 | ### Return Value |
| 4626 | |
| 4627 | advance width or height |
| 4628 | |
| 4629 | ### Example |
| 4630 | |
| 4631 | <div><fiddle-embed name="f1139a5ddd17fd47c2f45f6e642cac76"> |
| 4632 | |
| 4633 | #### Example Output |
| 4634 | |
| 4635 | ~~~~ |
| 4636 | default width = 5 |
| 4637 | double width = 10 |
| 4638 | ~~~~ |
| 4639 | |
| 4640 | </fiddle-embed></div> |
| 4641 | |
| 4642 | --- |
| 4643 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4644 | <a name="SkPaint_breakText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4645 | ## breakText |
| 4646 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4647 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4648 | size_t breakText(const void* text, size_t length, SkScalar maxWidth, |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 4649 | SkScalar* measuredWidth = nullptr) const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4650 | </pre> |
| 4651 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4652 | Returns the bytes of <a href="#SkPaint_breakText_text">text</a> that fit within <a href="#SkPaint_breakText_maxWidth">maxWidth</a>. |
| 4653 | If <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> is clear, the <a href="#SkPaint_breakText_text">text</a> fragment fits if its advance width is less than or |
| 4654 | equal to <a href="#SkPaint_breakText_maxWidth">maxWidth</a>. |
| 4655 | If <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> is set, the <a href="#SkPaint_breakText_text">text</a> fragment fits if its advance height is less than or |
| 4656 | equal to <a href="#SkPaint_breakText_maxWidth">maxWidth</a>. |
| 4657 | Measures only while the advance is less than or equal to <a href="#SkPaint_breakText_maxWidth">maxWidth</a>. |
| 4658 | Returns the advance or the <a href="#SkPaint_breakText_text">text</a> fragment in <a href="#SkPaint_breakText_measuredWidth">measuredWidth</a> if it not nullptr. |
| 4659 | Uses <a href="#Text_Encoding">Text Encoding</a> to decode <a href="#SkPaint_breakText_text">text</a>, <a href="undocumented#Typeface">Typeface</a> to get the font metrics, |
| 4660 | and <a href="#Text_Size">Text Size</a> to scale the metrics. |
| 4661 | Does not scale the advance or bounds by <a href="#Fake_Bold">Fake Bold</a> or <a href="undocumented#Path_Effect">Path Effect</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4662 | |
| 4663 | ### Parameters |
| 4664 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4665 | <table> <tr> <td><a name="SkPaint_breakText_text"> <code><strong>text </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4666 | character codes or glyph indices to be measured</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4667 | </tr> <tr> <td><a name="SkPaint_breakText_length"> <code><strong>length </strong></code> </a></td> <td> |
| 4668 | number of bytes of <a href="#SkPaint_breakText_text">text</a> to measure</td> |
| 4669 | </tr> <tr> <td><a name="SkPaint_breakText_maxWidth"> <code><strong>maxWidth </strong></code> </a></td> <td> |
| 4670 | advance limit; <a href="#SkPaint_breakText_text">text</a> is measured while advance is less than <a href="#SkPaint_breakText_maxWidth">maxWidth</a></td> |
| 4671 | </tr> <tr> <td><a name="SkPaint_breakText_measuredWidth"> <code><strong>measuredWidth </strong></code> </a></td> <td> |
| 4672 | returns the width of the <a href="#SkPaint_breakText_text">text</a> less than or equal to <a href="#SkPaint_breakText_maxWidth">maxWidth</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4673 | </tr> |
| 4674 | </table> |
| 4675 | |
| 4676 | ### Return Value |
| 4677 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4678 | bytes of <a href="#SkPaint_breakText_text">text</a> that fit, always less than or equal to <a href="#SkPaint_breakText_length">length</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4679 | |
| 4680 | ### Example |
| 4681 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 4682 | <div><fiddle-embed name="fd0033470ccbd5c7059670fdbf96cffc"><div><a href="undocumented#Line">Line</a> under "" shows desired width, shorter than available characters. |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 4683 | <a href="undocumented#Line">Line</a> under "" shows measured width after breaking <a href="#SkPaint_breakText_text">text</a>. |
| 4684 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4685 | |
| 4686 | --- |
| 4687 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4688 | <a name="SkPaint_getTextWidths"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4689 | ## getTextWidths |
| 4690 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4691 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
| 4692 | int getTextWidths(const void* text, size_t byteLength, SkScalar widths[], SkRect bounds[] = nullptr) const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4693 | </pre> |
| 4694 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4695 | Retrieves the advance and <a href="#SkPaint_getTextWidths_bounds">bounds</a> for each glyph in <a href="#SkPaint_getTextWidths_text">text</a>, and returns |
| 4696 | the glyph count in <a href="#SkPaint_getTextWidths_text">text</a>. |
| 4697 | Both <a href="#SkPaint_getTextWidths_widths">widths</a> and <a href="#SkPaint_getTextWidths_bounds">bounds</a> may be nullptr. |
| 4698 | If <a href="#SkPaint_getTextWidths_widths">widths</a> is not nullptr, <a href="#SkPaint_getTextWidths_widths">widths</a> must be an array of glyph count entries. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4699 | if <a href="#SkPaint_getTextWidths_bounds">bounds</a> is not nullptr, <a href="#SkPaint_getTextWidths_bounds">bounds</a> must be an array of glyph count entries. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4700 | If <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> is clear, <a href="#SkPaint_getTextWidths_widths">widths</a> returns the horizontal advance. |
| 4701 | If <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> is set, <a href="#SkPaint_getTextWidths_widths">widths</a> returns the vertical advance. |
| 4702 | Uses <a href="#Text_Encoding">Text Encoding</a> to decode <a href="#SkPaint_getTextWidths_text">text</a>, <a href="undocumented#Typeface">Typeface</a> to get the font metrics, |
| 4703 | and <a href="#Text_Size">Text Size</a> to scale the <a href="#SkPaint_getTextWidths_widths">widths</a> and <a href="#SkPaint_getTextWidths_bounds">bounds</a>. |
| 4704 | Does not scale the advance by <a href="#Fake_Bold">Fake Bold</a> or <a href="undocumented#Path_Effect">Path Effect</a>. |
| 4705 | Does include <a href="#Fake_Bold">Fake Bold</a> and <a href="undocumented#Path_Effect">Path Effect</a> in the <a href="#SkPaint_getTextWidths_bounds">bounds</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4706 | |
| 4707 | ### Parameters |
| 4708 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4709 | <table> <tr> <td><a name="SkPaint_getTextWidths_text"> <code><strong>text </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4710 | character codes or glyph indices to be measured</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4711 | </tr> <tr> <td><a name="SkPaint_getTextWidths_byteLength"> <code><strong>byteLength </strong></code> </a></td> <td> |
| 4712 | number of bytes of <a href="#SkPaint_getTextWidths_text">text</a> to measure</td> |
| 4713 | </tr> <tr> <td><a name="SkPaint_getTextWidths_widths"> <code><strong>widths </strong></code> </a></td> <td> |
| 4714 | returns <a href="#SkPaint_getTextWidths_text">text</a> advances for each glyph; may be nullptr</td> |
| 4715 | </tr> <tr> <td><a name="SkPaint_getTextWidths_bounds"> <code><strong>bounds </strong></code> </a></td> <td> |
| 4716 | returns <a href="#SkPaint_getTextWidths_bounds">bounds</a> for each glyph relative to (0, 0); may be nullptr</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4717 | </tr> |
| 4718 | </table> |
| 4719 | |
| 4720 | ### Return Value |
| 4721 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4722 | glyph count in <a href="#SkPaint_getTextWidths_text">text</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4723 | |
| 4724 | ### Example |
| 4725 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4726 | <div><fiddle-embed name="6b9e101f49e9c2c28755c5bdcef64dfb"><div>Bounds of <a href="undocumented#Glyph">Glyphs</a> increase for stroked <a href="#SkPaint_getTextWidths_text">text</a>, but <a href="#SkPaint_getTextWidths_text">text</a> advance remains the same. |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 4727 | The underlines show the <a href="#SkPaint_getTextWidths_text">text</a> advance, spaced to keep them distinct. |
| 4728 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4729 | |
| 4730 | --- |
| 4731 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 4732 | ## <a name="Text_Path"></a> Text Path |
| 4733 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4734 | <a href="#Text_Path">Text Path</a> describes the geometry of <a href="undocumented#Glyph">Glyphs</a> used to draw text. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4735 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4736 | <a name="SkPaint_getTextPath"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4737 | ## getTextPath |
| 4738 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4739 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
| 4740 | void getTextPath(const void* text, size_t length, SkScalar x, SkScalar y, SkPath* path) const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4741 | </pre> |
| 4742 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4743 | Returns the geometry as <a href="SkPath_Reference#Path">Path</a> equivalent to the drawn <a href="#SkPaint_getTextPath_text">text</a>. |
| 4744 | Uses <a href="#Text_Encoding">Text Encoding</a> to decode <a href="#SkPaint_getTextPath_text">text</a>, <a href="undocumented#Typeface">Typeface</a> to get the glyph paths, |
| 4745 | and <a href="#Text_Size">Text Size</a>, <a href="#Fake_Bold">Fake Bold</a>, and <a href="undocumented#Path_Effect">Path Effect</a> to scale and modify the glyph paths. |
| 4746 | All of the glyph paths are stored in <a href="#SkPaint_getTextPath_path">path</a>. |
| 4747 | Uses <a href="#SkPaint_getTextPath_x">x</a>, <a href="#SkPaint_getTextPath_y">y</a>, and <a href="#Text_Align">Text Align</a> to position <a href="#SkPaint_getTextPath_path">path</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4748 | |
| 4749 | ### Parameters |
| 4750 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4751 | <table> <tr> <td><a name="SkPaint_getTextPath_text"> <code><strong>text </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4752 | character codes or glyph indices</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4753 | </tr> <tr> <td><a name="SkPaint_getTextPath_length"> <code><strong>length </strong></code> </a></td> <td> |
| 4754 | number of bytes of <a href="#SkPaint_getTextPath_text">text</a></td> |
| 4755 | </tr> <tr> <td><a name="SkPaint_getTextPath_x"> <code><strong>x </strong></code> </a></td> <td> |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4756 | <a href="#SkPaint_getTextPath_x">x</a>-coordinate of the origin of the <a href="#SkPaint_getTextPath_text">text</a></td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4757 | </tr> <tr> <td><a name="SkPaint_getTextPath_y"> <code><strong>y </strong></code> </a></td> <td> |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4758 | <a href="#SkPaint_getTextPath_y">y</a>-coordinate of the origin of the <a href="#SkPaint_getTextPath_text">text</a></td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4759 | </tr> <tr> <td><a name="SkPaint_getTextPath_path"> <code><strong>path </strong></code> </a></td> <td> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4760 | geometry of the <a href="undocumented#Glyph">Glyphs</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4761 | </tr> |
| 4762 | </table> |
| 4763 | |
| 4764 | ### Example |
| 4765 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 4766 | <div><fiddle-embed name="7c9e6a399f898d68026c1f0865e6f73e"><div><a href="undocumented#Text">Text</a> is added to <a href="SkPath_Reference#Path">Path</a>, offset, and subtracted from <a href="SkPath_Reference#Path">Path</a>, then added at |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 4767 | the offset location. The result is rendered with one draw call. |
| 4768 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4769 | |
| 4770 | --- |
| 4771 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4772 | <a name="SkPaint_getPosTextPath"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4773 | ## getPosTextPath |
| 4774 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4775 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
| 4776 | void getPosTextPath(const void* text, size_t length, const SkPoint pos[], SkPath* path) const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4777 | </pre> |
| 4778 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4779 | Returns the geometry as <a href="SkPath_Reference#Path">Path</a> equivalent to the drawn <a href="#SkPaint_getPosTextPath_text">text</a>. |
| 4780 | Uses <a href="#Text_Encoding">Text Encoding</a> to decode <a href="#SkPaint_getPosTextPath_text">text</a>, <a href="undocumented#Typeface">Typeface</a> to get the glyph paths, |
| 4781 | and <a href="#Text_Size">Text Size</a>, <a href="#Fake_Bold">Fake Bold</a>, and <a href="undocumented#Path_Effect">Path Effect</a> to scale and modify the glyph paths. |
| 4782 | All of the glyph paths are stored in <a href="#SkPaint_getPosTextPath_path">path</a>. |
| 4783 | Uses <a href="#SkPaint_getPosTextPath_pos">pos</a> array and <a href="#Text_Align">Text Align</a> to position <a href="#SkPaint_getPosTextPath_path">path</a>. |
| 4784 | <a href="#SkPaint_getPosTextPath_pos">pos</a> contains a position for each glyph. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4785 | |
| 4786 | ### Parameters |
| 4787 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4788 | <table> <tr> <td><a name="SkPaint_getPosTextPath_text"> <code><strong>text </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4789 | character codes or glyph indices</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4790 | </tr> <tr> <td><a name="SkPaint_getPosTextPath_length"> <code><strong>length </strong></code> </a></td> <td> |
| 4791 | number of bytes of <a href="#SkPaint_getPosTextPath_text">text</a></td> |
| 4792 | </tr> <tr> <td><a name="SkPaint_getPosTextPath_pos"> <code><strong>pos </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4793 | positions of each glyph</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4794 | </tr> <tr> <td><a name="SkPaint_getPosTextPath_path"> <code><strong>path </strong></code> </a></td> <td> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4795 | geometry of the <a href="undocumented#Glyph">Glyphs</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4796 | </tr> |
| 4797 | </table> |
| 4798 | |
| 4799 | ### Example |
| 4800 | |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 4801 | <div><fiddle-embed name="7f27c93472aa99a7542fb3493076f072"><div>Simplifies three <a href="undocumented#Glyph">Glyphs</a> to eliminate overlaps, and strokes the result. |
| 4802 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4803 | |
| 4804 | --- |
| 4805 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 4806 | ## <a name="Text_Intercepts"></a> Text Intercepts |
| 4807 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4808 | <a href="#Text_Intercepts">Text Intercepts</a> describe the intersection of drawn text <a href="undocumented#Glyph">Glyphs</a> with a pair |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4809 | of lines parallel to the text advance. <a href="#Text_Intercepts">Text Intercepts</a> permits creating a |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4810 | underline that skips Descenders. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4811 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4812 | <a name="SkPaint_getTextIntercepts"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4813 | ## getTextIntercepts |
| 4814 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4815 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4816 | int getTextIntercepts(const void* text, size_t length, SkScalar x, SkScalar y, |
| 4817 | const SkScalar bounds[2], SkScalar* intervals) const |
| 4818 | </pre> |
| 4819 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4820 | Returns the number of <a href="#SkPaint_getTextIntercepts_intervals">intervals</a> that intersect <a href="#SkPaint_getTextIntercepts_bounds">bounds</a>. |
| 4821 | <a href="#SkPaint_getTextIntercepts_bounds">bounds</a> describes a pair of lines parallel to the <a href="#SkPaint_getTextIntercepts_text">text</a> advance. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4822 | The return count is zero or a multiple of two, and is at most twice the number of <a href="undocumented#Glyph">Glyphs</a> in |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4823 | the string. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4824 | Uses <a href="#Text_Encoding">Text Encoding</a> to decode <a href="#SkPaint_getTextIntercepts_text">text</a>, <a href="undocumented#Typeface">Typeface</a> to get the glyph paths, |
| 4825 | and <a href="#Text_Size">Text Size</a>, <a href="#Fake_Bold">Fake Bold</a>, and <a href="undocumented#Path_Effect">Path Effect</a> to scale and modify the glyph paths. |
| 4826 | Uses <a href="#SkPaint_getTextIntercepts_x">x</a>, <a href="#SkPaint_getTextIntercepts_y">y</a>, and <a href="#Text_Align">Text Align</a> to position <a href="#SkPaint_getTextIntercepts_intervals">intervals</a>. |
| 4827 | Pass nullptr for <a href="#SkPaint_getTextIntercepts_intervals">intervals</a> to determine the size of the interval array. |
| 4828 | <a href="#SkPaint_getTextIntercepts_intervals">intervals</a> are cached to improve performance for multiple calls. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4829 | |
| 4830 | ### Parameters |
| 4831 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4832 | <table> <tr> <td><a name="SkPaint_getTextIntercepts_text"> <code><strong>text </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4833 | character codes or glyph indices</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4834 | </tr> <tr> <td><a name="SkPaint_getTextIntercepts_length"> <code><strong>length </strong></code> </a></td> <td> |
| 4835 | number of bytes of <a href="#SkPaint_getTextIntercepts_text">text</a></td> |
| 4836 | </tr> <tr> <td><a name="SkPaint_getTextIntercepts_x"> <code><strong>x </strong></code> </a></td> <td> |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4837 | <a href="#SkPaint_getTextIntercepts_x">x</a>-coordinate of the origin of the <a href="#SkPaint_getTextIntercepts_text">text</a></td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4838 | </tr> <tr> <td><a name="SkPaint_getTextIntercepts_y"> <code><strong>y </strong></code> </a></td> <td> |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4839 | <a href="#SkPaint_getTextIntercepts_y">y</a>-coordinate of the origin of the <a href="#SkPaint_getTextIntercepts_text">text</a></td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4840 | </tr> <tr> <td><a name="SkPaint_getTextIntercepts_bounds"> <code><strong>bounds </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4841 | lower and upper line parallel to the advance</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4842 | </tr> <tr> <td><a name="SkPaint_getTextIntercepts_intervals"> <code><strong>intervals </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4843 | returned intersections; may be nullptr</td> |
| 4844 | </tr> |
| 4845 | </table> |
| 4846 | |
| 4847 | ### Return Value |
| 4848 | |
| 4849 | number of intersections; may be zero |
| 4850 | |
| 4851 | ### Example |
| 4852 | |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 4853 | <div><fiddle-embed name="2a0b80ed20d193c688085b79deb5bdc9"><div>Underline uses intercepts to draw on either side of the glyph Descender. |
| 4854 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4855 | |
| 4856 | --- |
| 4857 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4858 | <a name="SkPaint_getPosTextIntercepts"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4859 | ## getPosTextIntercepts |
| 4860 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4861 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4862 | int getPosTextIntercepts(const void* text, size_t length, const SkPoint pos[], |
| 4863 | const SkScalar bounds[2], SkScalar* intervals) const |
| 4864 | </pre> |
| 4865 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4866 | Returns the number of <a href="#SkPaint_getPosTextIntercepts_intervals">intervals</a> that intersect <a href="#SkPaint_getPosTextIntercepts_bounds">bounds</a>. |
| 4867 | <a href="#SkPaint_getPosTextIntercepts_bounds">bounds</a> describes a pair of lines parallel to the <a href="#SkPaint_getPosTextIntercepts_text">text</a> advance. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4868 | The return count is zero or a multiple of two, and is at most twice the number of <a href="undocumented#Glyph">Glyphs</a> in |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4869 | the string. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4870 | Uses <a href="#Text_Encoding">Text Encoding</a> to decode <a href="#SkPaint_getPosTextIntercepts_text">text</a>, <a href="undocumented#Typeface">Typeface</a> to get the glyph paths, |
| 4871 | and <a href="#Text_Size">Text Size</a>, <a href="#Fake_Bold">Fake Bold</a>, and <a href="undocumented#Path_Effect">Path Effect</a> to scale and modify the glyph paths. |
| 4872 | Uses <a href="#SkPaint_getPosTextIntercepts_pos">pos</a> array and <a href="#Text_Align">Text Align</a> to position <a href="#SkPaint_getPosTextIntercepts_intervals">intervals</a>. |
| 4873 | Pass nullptr for <a href="#SkPaint_getPosTextIntercepts_intervals">intervals</a> to determine the size of the interval array. |
| 4874 | <a href="#SkPaint_getPosTextIntercepts_intervals">intervals</a> are cached to improve performance for multiple calls. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4875 | |
| 4876 | ### Parameters |
| 4877 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4878 | <table> <tr> <td><a name="SkPaint_getPosTextIntercepts_text"> <code><strong>text </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4879 | character codes or glyph indices</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4880 | </tr> <tr> <td><a name="SkPaint_getPosTextIntercepts_length"> <code><strong>length </strong></code> </a></td> <td> |
| 4881 | number of bytes of <a href="#SkPaint_getPosTextIntercepts_text">text</a></td> |
| 4882 | </tr> <tr> <td><a name="SkPaint_getPosTextIntercepts_pos"> <code><strong>pos </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4883 | positions of each glyph</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4884 | </tr> <tr> <td><a name="SkPaint_getPosTextIntercepts_bounds"> <code><strong>bounds </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4885 | lower and upper line parallel to the advance</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4886 | </tr> <tr> <td><a name="SkPaint_getPosTextIntercepts_intervals"> <code><strong>intervals </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4887 | returned intersections; may be nullptr</td> |
| 4888 | </tr> |
| 4889 | </table> |
| 4890 | |
| 4891 | ### Return Value |
| 4892 | |
Cary Clark | a523d2d | 2017-08-30 08:58:10 -0400 | [diff] [blame] | 4893 | number of intersections; may be zero |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4894 | |
| 4895 | ### Example |
| 4896 | |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 4897 | <div><fiddle-embed name="98b2dfc552d0540a7c041fe7a2839bd7"><div><a href="undocumented#Text">Text</a> intercepts draw on either side of, but not inside, <a href="undocumented#Glyph">Glyphs</a> in a run. |
| 4898 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4899 | |
| 4900 | --- |
| 4901 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4902 | <a name="SkPaint_getPosTextHIntercepts"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4903 | ## getPosTextHIntercepts |
| 4904 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4905 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
| 4906 | int getPosTextHIntercepts(const void* text, size_t length, const SkScalar xpos[], SkScalar constY, |
| 4907 | const SkScalar bounds[2], SkScalar* intervals) const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4908 | </pre> |
| 4909 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4910 | Returns the number of <a href="#SkPaint_getPosTextHIntercepts_intervals">intervals</a> that intersect <a href="#SkPaint_getPosTextHIntercepts_bounds">bounds</a>. |
| 4911 | <a href="#SkPaint_getPosTextHIntercepts_bounds">bounds</a> describes a pair of lines parallel to the <a href="#SkPaint_getPosTextHIntercepts_text">text</a> advance. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4912 | The return count is zero or a multiple of two, and is at most twice the number of <a href="undocumented#Glyph">Glyphs</a> in |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4913 | the string. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4914 | Uses <a href="#Text_Encoding">Text Encoding</a> to decode <a href="#SkPaint_getPosTextHIntercepts_text">text</a>, <a href="undocumented#Typeface">Typeface</a> to get the glyph paths, |
| 4915 | and <a href="#Text_Size">Text Size</a>, <a href="#Fake_Bold">Fake Bold</a>, and <a href="undocumented#Path_Effect">Path Effect</a> to scale and modify the glyph paths. |
| 4916 | Uses <a href="#SkPaint_getPosTextHIntercepts_xpos">xpos</a> array, <a href="#SkPaint_getPosTextHIntercepts_constY">constY</a>, and <a href="#Text_Align">Text Align</a> to position <a href="#SkPaint_getPosTextHIntercepts_intervals">intervals</a>. |
| 4917 | Pass nullptr for <a href="#SkPaint_getPosTextHIntercepts_intervals">intervals</a> to determine the size of the interval array. |
| 4918 | <a href="#SkPaint_getPosTextHIntercepts_intervals">intervals</a> are cached to improve performance for multiple calls. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4919 | |
| 4920 | ### Parameters |
| 4921 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4922 | <table> <tr> <td><a name="SkPaint_getPosTextHIntercepts_text"> <code><strong>text </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4923 | character codes or glyph indices</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4924 | </tr> <tr> <td><a name="SkPaint_getPosTextHIntercepts_length"> <code><strong>length </strong></code> </a></td> <td> |
| 4925 | number of bytes of <a href="#SkPaint_getPosTextHIntercepts_text">text</a></td> |
| 4926 | </tr> <tr> <td><a name="SkPaint_getPosTextHIntercepts_xpos"> <code><strong>xpos </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4927 | positions of each glyph in x</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4928 | </tr> <tr> <td><a name="SkPaint_getPosTextHIntercepts_constY"> <code><strong>constY </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4929 | position of each glyph in y</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4930 | </tr> <tr> <td><a name="SkPaint_getPosTextHIntercepts_bounds"> <code><strong>bounds </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4931 | lower and upper line parallel to the advance</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4932 | </tr> <tr> <td><a name="SkPaint_getPosTextHIntercepts_intervals"> <code><strong>intervals </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4933 | returned intersections; may be nullptr</td> |
| 4934 | </tr> |
| 4935 | </table> |
| 4936 | |
| 4937 | ### Return Value |
| 4938 | |
| 4939 | number of intersections; may be zero |
| 4940 | |
| 4941 | ### Example |
| 4942 | |
Cary Clark | 1a8d762 | 2018-03-05 13:26:16 -0500 | [diff] [blame] | 4943 | <div><fiddle-embed name="dc9851c43acc3716aca8c9a4d40d452d"><div><a href="undocumented#Text">Text</a> intercepts do not take stroke thickness into consideration. |
| 4944 | </div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4945 | |
| 4946 | --- |
| 4947 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4948 | <a name="SkPaint_getTextBlobIntercepts"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4949 | ## getTextBlobIntercepts |
| 4950 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4951 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
| 4952 | int getTextBlobIntercepts(const SkTextBlob* blob, const SkScalar bounds[2], SkScalar* intervals) const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4953 | </pre> |
| 4954 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4955 | Returns the number of <a href="#SkPaint_getTextBlobIntercepts_intervals">intervals</a> that intersect <a href="#SkPaint_getTextBlobIntercepts_bounds">bounds</a>. |
| 4956 | <a href="#SkPaint_getTextBlobIntercepts_bounds">bounds</a> describes a pair of lines parallel to the text advance. |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4957 | The return count is zero or a multiple of two, and is at most twice the number of <a href="undocumented#Glyph">Glyphs</a> in |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4958 | the string. |
Cary Clark | 3cd22cc | 2017-12-01 11:49:58 -0500 | [diff] [blame] | 4959 | Uses <a href="undocumented#Typeface">Typeface</a> to get the glyph paths, |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4960 | and <a href="#Text_Size">Text Size</a>, <a href="#Fake_Bold">Fake Bold</a>, and <a href="undocumented#Path_Effect">Path Effect</a> to scale and modify the glyph paths. |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4961 | Uses run array and <a href="#Text_Align">Text Align</a> to position <a href="#SkPaint_getTextBlobIntercepts_intervals">intervals</a>. |
Cary Clark | 3cd22cc | 2017-12-01 11:49:58 -0500 | [diff] [blame] | 4962 | <a href="#Text_Encoding">Text Encoding</a> must be set to <a href="#SkPaint_kGlyphID_TextEncoding">SkPaint::kGlyphID TextEncoding</a>. |
| 4963 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4964 | Pass nullptr for <a href="#SkPaint_getTextBlobIntercepts_intervals">intervals</a> to determine the size of the interval array. |
| 4965 | <a href="#SkPaint_getTextBlobIntercepts_intervals">intervals</a> are cached to improve performance for multiple calls. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4966 | |
| 4967 | ### Parameters |
| 4968 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4969 | <table> <tr> <td><a name="SkPaint_getTextBlobIntercepts_blob"> <code><strong>blob </strong></code> </a></td> <td> |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4970 | <a href="undocumented#Glyph">Glyphs</a>, positions, and text paint attributes</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4971 | </tr> <tr> <td><a name="SkPaint_getTextBlobIntercepts_bounds"> <code><strong>bounds </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4972 | lower and upper line parallel to the advance</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4973 | </tr> <tr> <td><a name="SkPaint_getTextBlobIntercepts_intervals"> <code><strong>intervals </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4974 | returned intersections; may be nullptr</td> |
| 4975 | </tr> |
| 4976 | </table> |
| 4977 | |
| 4978 | ### Return Value |
| 4979 | |
| 4980 | number of intersections; may be zero |
| 4981 | |
| 4982 | ### Example |
| 4983 | |
Cary Clark | 3cd22cc | 2017-12-01 11:49:58 -0500 | [diff] [blame] | 4984 | <div><fiddle-embed name="71959a66b2290d70003887c0de339266"></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4985 | |
| 4986 | --- |
| 4987 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4988 | <a name="SkPaint_nothingToDraw"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4989 | ## nothingToDraw |
| 4990 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4991 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4992 | bool nothingToDraw() const |
| 4993 | </pre> |
| 4994 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4995 | Returns true if <a href="#Paint">Paint</a> prevents all drawing; |
| 4996 | otherwise, the <a href="#Paint">Paint</a> may or may not allow drawing. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4997 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 4998 | Returns true if, for example, <a href="undocumented#Blend_Mode">Blend Mode</a> combined with <a href="undocumented#Alpha">Color Alpha</a> computes a |
| 4999 | new <a href="undocumented#Alpha">Alpha</a> of zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5000 | |
| 5001 | ### Return Value |
| 5002 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5003 | true if <a href="#Paint">Paint</a> prevents all drawing |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5004 | |
| 5005 | ### Example |
| 5006 | |
| 5007 | <div><fiddle-embed name="fc5a771b915ac341f56554f01d282831"> |
| 5008 | |
| 5009 | #### Example Output |
| 5010 | |
| 5011 | ~~~~ |
| 5012 | initial nothing to draw: false |
| 5013 | blend dst nothing to draw: true |
| 5014 | blend src over nothing to draw: false |
| 5015 | alpha 0 nothing to draw: true |
| 5016 | ~~~~ |
| 5017 | |
| 5018 | </fiddle-embed></div> |
| 5019 | |
| 5020 | --- |
| 5021 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 5022 | ## <a name="Fast_Bounds"></a> Fast Bounds |
| 5023 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5024 | <a href="#Fast_Bounds">Fast Bounds</a> methods conservatively outset a drawing bounds by additional area |
| 5025 | <a href="#Paint">Paint</a> may draw to. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5026 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 5027 | <a name="SkPaint_canComputeFastBounds"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5028 | ## canComputeFastBounds |
| 5029 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 5030 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5031 | bool canComputeFastBounds() const |
| 5032 | </pre> |
| 5033 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5034 | Returns true if <a href="#Paint">Paint</a> does not include elements requiring extensive computation |
| 5035 | to compute <a href="undocumented#Device">Device</a> bounds of drawn geometry. For instance, <a href="#Paint">Paint</a> with <a href="undocumented#Path_Effect">Path Effect</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5036 | always returns false. |
| 5037 | |
| 5038 | ### Return Value |
| 5039 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5040 | true if <a href="#Paint">Paint</a> allows for fast computation of bounds |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5041 | |
| 5042 | --- |
| 5043 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 5044 | <a name="SkPaint_computeFastBounds"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5045 | ## computeFastBounds |
| 5046 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 5047 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5048 | const SkRect& computeFastBounds(const SkRect& orig, SkRect* storage) const |
| 5049 | </pre> |
| 5050 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5051 | Only call this if <a href="#SkPaint_canComputeFastBounds">canComputeFastBounds</a> returned true. This takes a |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5052 | raw rectangle (the raw bounds of a shape), and adjusts it for stylistic |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5053 | effects in the paint (e.g. stroking). If needed, it uses the <a href="#SkPaint_computeFastBounds_storage">storage</a> |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 5054 | parameter. It returns the adjusted bounds that can then be used |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 5055 | for <a href="SkCanvas_Reference#SkCanvas_quickReject">SkCanvas::quickReject</a> tests. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5056 | |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 5057 | The returned <a href="SkRect_Reference#Rect">Rect</a> will either be <a href="#SkPaint_computeFastBounds_orig">orig</a> or <a href="#SkPaint_computeFastBounds_storage">storage</a>, thus the caller |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5058 | should not rely on <a href="#SkPaint_computeFastBounds_storage">storage</a> being set to the result, but should always |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 5059 | use the returned value. It is legal for <a href="#SkPaint_computeFastBounds_orig">orig</a> and <a href="#SkPaint_computeFastBounds_storage">storage</a> to be the same |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 5060 | <a href="SkRect_Reference#Rect">Rect</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5061 | |
| 5062 | ### Parameters |
| 5063 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5064 | <table> <tr> <td><a name="SkPaint_computeFastBounds_orig"> <code><strong>orig </strong></code> </a></td> <td> |
| 5065 | geometry modified by <a href="#Paint">Paint</a> when drawn</td> |
| 5066 | </tr> <tr> <td><a name="SkPaint_computeFastBounds_storage"> <code><strong>storage </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5067 | computed bounds of geometry; may not be nullptr</td> |
| 5068 | </tr> |
| 5069 | </table> |
| 5070 | |
| 5071 | ### Return Value |
| 5072 | |
| 5073 | fast computed bounds |
| 5074 | |
| 5075 | --- |
| 5076 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 5077 | <a name="SkPaint_computeFastStrokeBounds"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5078 | ## computeFastStrokeBounds |
| 5079 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 5080 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5081 | const SkRect& computeFastStrokeBounds(const SkRect& orig, SkRect* storage) const |
| 5082 | </pre> |
| 5083 | |
| 5084 | ### Parameters |
| 5085 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5086 | <table> <tr> <td><a name="SkPaint_computeFastStrokeBounds_orig"> <code><strong>orig </strong></code> </a></td> <td> |
| 5087 | geometry modified by <a href="#Paint">Paint</a> when drawn</td> |
| 5088 | </tr> <tr> <td><a name="SkPaint_computeFastStrokeBounds_storage"> <code><strong>storage </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5089 | computed bounds of geometry</td> |
| 5090 | </tr> |
| 5091 | </table> |
| 5092 | |
| 5093 | ### Return Value |
| 5094 | |
| 5095 | fast computed bounds |
| 5096 | |
| 5097 | --- |
| 5098 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 5099 | <a name="SkPaint_doComputeFastBounds"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5100 | ## doComputeFastBounds |
| 5101 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 5102 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
| 5103 | const SkRect& doComputeFastBounds(const SkRect& orig, SkRect* storage, Style style) const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5104 | </pre> |
| 5105 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 5106 | Computes the bounds, overriding the <a href="#Paint">Paint</a> <a href="#SkPaint_Style">Style</a>. This can be used to |
| 5107 | account for additional width required by stroking <a href="#SkPaint_doComputeFastBounds_orig">orig</a>, without |
| 5108 | altering <a href="#SkPaint_Style">Style</a> set to fill. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5109 | |
| 5110 | ### Parameters |
| 5111 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5112 | <table> <tr> <td><a name="SkPaint_doComputeFastBounds_orig"> <code><strong>orig </strong></code> </a></td> <td> |
| 5113 | geometry modified by <a href="#Paint">Paint</a> when drawn</td> |
| 5114 | </tr> <tr> <td><a name="SkPaint_doComputeFastBounds_storage"> <code><strong>storage </strong></code> </a></td> <td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5115 | computed bounds of geometry</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5116 | </tr> <tr> <td><a name="SkPaint_doComputeFastBounds_style"> <code><strong>style </strong></code> </a></td> <td> |
| 5117 | overrides <a href="#SkPaint_Style">Style</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5118 | </tr> |
| 5119 | </table> |
| 5120 | |
| 5121 | ### Return Value |
| 5122 | |
| 5123 | fast computed bounds |
| 5124 | |
| 5125 | --- |
| 5126 | |
Cary Clark | 78de751 | 2018-02-07 07:27:09 -0500 | [diff] [blame] | 5127 | ## <a name="Utility"></a> Utility |
| 5128 | |
| 5129 | | name | description | |
| 5130 | | --- | --- | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 5131 | | <a href="#SkPaint_containsText">containsText</a> | returns if all text corresponds to <a href="undocumented#Glyph">Glyphs</a> | |
| 5132 | | <a href="#SkPaint_countText">countText</a> | returns number of <a href="undocumented#Glyph">Glyphs</a> in text | |
| 5133 | | <a href="#SkPaint_glyphsToUnichars">glyphsToUnichars</a> | converts <a href="undocumented#Glyph">Glyphs</a> into text | |
Cary Clark | 78de751 | 2018-02-07 07:27:09 -0500 | [diff] [blame] | 5134 | | <a href="#SkPaint_nothingToDraw">nothingToDraw</a> | returns true if <a href="#Paint">Paint</a> prevents all drawing | |
| 5135 | | <a href="#SkPaint_textToGlyphs">textToGlyphs</a> | converts text into glyph indices | |
| 5136 | | <a href="#SkPaint_toString">toString</a> | converts <a href="#Paint">Paint</a> to machine readable form | |
| 5137 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 5138 | <a name="SkPaint_toString"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5139 | ## toString |
| 5140 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 5141 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Cary Clark | 2dc84ad | 2018-01-26 12:56:22 -0500 | [diff] [blame] | 5142 | void toString(SkString* str) const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5143 | </pre> |
| 5144 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 5145 | Creates string representation of <a href="#Paint">Paint</a>. The representation is read by |
| 5146 | internal debugging tools. The interface and implementation may be |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 5147 | suppressed by defining SK_IGNORE_TO_STRING. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5148 | |
| 5149 | ### Parameters |
| 5150 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5151 | <table> <tr> <td><a name="SkPaint_toString_str"> <code><strong>str </strong></code> </a></td> <td> |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 5152 | storage for string representation of <a href="#Paint">Paint</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5153 | </tr> |
| 5154 | </table> |
| 5155 | |
| 5156 | ### Example |
| 5157 | |
| 5158 | <div><fiddle-embed name="5670c04b4562908169a776c48c92d104"> |
| 5159 | |
| 5160 | #### Example Output |
| 5161 | |
| 5162 | ~~~~ |
| 5163 | text size = 12 |
| 5164 | ~~~~ |
| 5165 | |
| 5166 | </fiddle-embed></div> |
| 5167 | |
Cary Clark | 2ade997 | 2017-11-02 17:49:34 -0400 | [diff] [blame] | 5168 | ### See Also |
| 5169 | |
Cary Clark | 2a8c48b | 2018-02-15 17:31:24 -0500 | [diff] [blame] | 5170 | <a href="undocumented#SkPathEffect_toString">SkPathEffect::toString</a> <a href="undocumented#SkMaskFilter_toString">SkMaskFilter::toString</a> <a href="undocumented#SkColorFilter_toString">SkColorFilter::toString</a> <a href="undocumented#SkImageFilter_toString">SkImageFilter::toString</a> |
Cary Clark | 2ade997 | 2017-11-02 17:49:34 -0400 | [diff] [blame] | 5171 | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5172 | --- |
| 5173 | |