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 | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 8 | ## <a name="Subtopic"></a> 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 | |
| 14 | | <a href="#Constructor">Constructor</a> | functions that construct <a href="SkPaint_Reference#SkPaint">SkPaint</a> | |
| 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 |
| 21 | options outside of the <a href="#Clip">Canvas Clip</a> and <a href="#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 | | --- | --- | |
| 50 | | <a href="#Alpha_Methods">Alpha Methods</a> | get and set <a href="#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> | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 61 | | Fill | fill and stroke | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 62 | | <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 | |
| 63 | | <a href="#Filter_Quality_Methods">Filter Quality Methods</a> | get and set <a href="undocumented#Filter_Quality">Filter Quality</a> | |
| 64 | | <a href="#SkPaint_Flags">Flags</a> | attributes represented by single bits | |
| 65 | | <a href="SkPaint_Reference#Font_Embedded_Bitmaps">Font Embedded Bitmaps</a> | custom sized bitmap <a href="#Glyph">Glyphs</a> | |
| 66 | | <a href="#Font_Metrics">Font Metrics</a> | common glyph dimensions | |
| 67 | | <a href="SkPaint_Reference#Full_Hinting_Spacing">Full Hinting Spacing</a> | glyph spacing affected by hinting | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 68 | | <a href="#Hairline">Hairline</a> | lines and curves with minimal width | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 69 | | <a href="#SkPaint_Hinting">Hinting</a> | glyph outline adjustment | |
| 70 | | <a href="#Image_Filter_Methods">Image Filter Methods</a> | get and set <a href="undocumented#Image_Filter">Image Filter</a> | |
| 71 | | <a href="#Initializers">Initializers</a> | constructors and initialization | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 72 | | <a href="SkPaint_Reference#LCD_Text">LCD Text</a> | text relying on the order of <a href="#RGB">Color RGB</a> stripes | |
| 73 | | <a href="SkPaint_Reference#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] | 74 | | <a href="#Management">Management</a> | paint copying, moving, comparing | |
| 75 | | <a href="#Mask_Filter_Methods">Mask Filter Methods</a> | get and set <a href="undocumented#Mask_Filter">Mask Filter</a> | |
| 76 | | <a href="#Measure_Text">Measure Text</a> | width, height, bounds of text | |
| 77 | | <a href="#Miter_Limit">Miter Limit</a> | maximum length of stroked corners | |
| 78 | | <a href="#Path_Effect_Methods">Path Effect Methods</a> | get and set <a href="undocumented#Path_Effect">Path Effect</a> | |
| 79 | | <a href="#Shader_Methods">Shader Methods</a> | get and set <a href="undocumented#Shader">Shader</a> | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 80 | | Stroke | lines and curves with width | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 81 | | <a href="#Stroke_Cap">Stroke Cap</a> | decorations at ends of open strokes | |
| 82 | | <a href="#Stroke_Join">Stroke Join</a> | decoration at corners of strokes | |
| 83 | | <a href="#Stroke_Width">Stroke Width</a> | thickness perpendicular to geometry | |
| 84 | | <a href="#SkPaint_Style">Style</a> | geometry filling, stroking | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 85 | | <a href="SkPaint_Reference#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 | |
| 87 | | <a href="#Text_Encoding">Text Encoding</a> | text encoded as characters or <a href="#Glyph">Glyphs</a> | |
| 88 | | <a href="#Text_Intercepts">Text Intercepts</a> | advanced underline, strike through | |
| 89 | | <a href="#Text_Path">Text Path</a> | geometry of <a href="#Glyph">Glyphs</a> | |
| 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> | |
| 94 | | <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] | 95 | |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 96 | ## <a name="Constant"></a> Constant |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 97 | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 98 | | name | description | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 99 | | --- | --- | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 100 | | <a href="#SkPaint_Align">Align</a> | glyph locations relative to text position | |
| 101 | | <a href="#SkPaint_Cap">Cap</a> | start and end geometry on stroked shapes | |
| 102 | | <a href="#SkPaint_Flags">Flags</a> | values described by bits and masks | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 103 | | <a href="#SkPaint_Hinting">Hinting</a> | level of glyph outline adjustment | |
| 104 | | <a href="#SkPaint_Join">Join</a> | corner geometry on stroked shapes | |
| 105 | | <a href="#SkPaint_Style">Style</a> | stroke, fill, or both | |
| 106 | | <a href="#SkPaint_TextEncoding">TextEncoding</a> | character or glyph encoded size | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 107 | | _anonymous | number of <a href="#SkPaint_Style">Style</a> defines | |
| 108 | | _anonymous_2 | number of <a href="#Text_Align">Text Align</a> values | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 109 | |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 110 | ## <a name="Class_or_Struct"></a> Class or Struct |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 111 | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 112 | | name | description | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 113 | | --- | --- | |
| 114 | | <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] | 115 | |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 116 | ## <a name="Constructor"></a> Constructor |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 117 | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 118 | | name | description | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 119 | | --- | --- | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 120 | | <a href="#SkPaint_empty_constructor">SkPaint()</a> | constructs with default values | |
| 121 | | <a href="#SkPaint_move_SkPaint">SkPaint(SkPaint&& paint)</a> | moves paint without copying it | |
| 122 | | <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] | 123 | | <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] | 124 | |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 125 | ## <a name="Operator"></a> Operator |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 126 | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 127 | | name | description | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 128 | | --- | --- | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 129 | | <a href="#SkPaint_notequal_operator">operator!=(const SkPaint& a, const SkPaint& b)</a> | compares paints for inequality | |
| 130 | | <a href="#SkPaint_move_operator">operator=(SkPaint&& paint)</a> | moves paint without copying it | |
| 131 | | <a href="#SkPaint_copy_operator">operator=(const SkPaint& paint)</a> | makes a shallow copy | |
| 132 | | <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] | 133 | |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 134 | ## <a name="Member_Function"></a> Member Function |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 135 | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 136 | | name | description | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 137 | | --- | --- | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 138 | | <a href="#SkPaint_breakText">breakText</a> | returns text that fits in a width | |
| 139 | | <a href="#SkPaint_canComputeFastBounds">canComputeFastBounds</a> | returns true if settings allow for fast bounds computation | |
| 140 | | <a href="#SkPaint_computeFastBounds">computeFastBounds</a> | returns fill bounds for quick reject tests | |
| 141 | | <a href="#SkPaint_computeFastStrokeBounds">computeFastStrokeBounds</a> | returns stroke bounds for quick reject tests | |
| 142 | | <a href="#SkPaint_containsText">containsText</a> | returns if all text corresponds to <a href="#Glyph">Glyphs</a> | |
| 143 | | <a href="#SkPaint_countText">countText</a> | returns number of <a href="#Glyph">Glyphs</a> in text | |
| 144 | | <a href="#SkPaint_doComputeFastBounds">doComputeFastBounds</a> | returns bounds for quick reject tests | |
| 145 | | <a href="#SkPaint_flatten">flatten</a> | serializes into a buffer | |
| 146 | | <a href="#SkPaint_getAlpha">getAlpha</a> | returns <a href="#Alpha">Color Alpha</a>, color opacity | |
| 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> | |
| 148 | | <a href="#SkPaint_getColor">getColor</a> | returns <a href="#Alpha">Color Alpha</a> and <a href="#RGB">Color RGB</a>, one drawing color | |
| 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 | |
| 181 | | <a href="#SkPaint_glyphsToUnichars">glyphsToUnichars</a> | converts <a href="#Glyph">Glyphs</a> into text | |
| 182 | | <a href="#SkPaint_isAntiAlias">isAntiAlias</a> | returns true if Anti-alias is set | |
| 183 | | <a href="#SkPaint_isAutohinted">isAutohinted</a> | returns true if <a href="#Glyph">Glyphs</a> are always hinted | |
| 184 | | <a href="#SkPaint_isDevKernText">isDevKernText</a> | returns true if <a href="SkPaint_Reference#Full_Hinting_Spacing">Full Hinting Spacing</a> is set | |
| 185 | | <a href="#SkPaint_isDither">isDither</a> | returns true if <a href="#Dither">Dither</a> is set | |
| 186 | | <a href="#SkPaint_isEmbeddedBitmapText">isEmbeddedBitmapText</a> | returns true if <a href="SkPaint_Reference#Font_Embedded_Bitmaps">Font Embedded Bitmaps</a> is set | |
| 187 | | <a href="#SkPaint_isFakeBoldText">isFakeBoldText</a> | returns true if <a href="#Fake_Bold">Fake Bold</a> is set | |
| 188 | | <a href="#SkPaint_isLCDRenderText">isLCDRenderText</a> | returns true if <a href="SkPaint_Reference#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 | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 190 | | <a href="#SkPaint_isSrcOver">isSrcOver</a> | returns true if <a href="undocumented#Blend_Mode">Blend Mode</a> is <a href="#SkBlendMode_kSrcOver">SkBlendMode::kSrcOver</a> | |
| 191 | | <a href="#SkPaint_isSubpixelText">isSubpixelText</a> | returns true if <a href="SkPaint_Reference#Subpixel_Text">Subpixel Text</a> is set | |
| 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 | |
| 204 | | <a href="#SkPaint_setAlpha">setAlpha</a> | sets <a href="#Alpha">Color Alpha</a>, color opacity | |
| 205 | | <a href="#SkPaint_setAntiAlias">setAntiAlias</a> | sets or clears Anti-alias | |
| 206 | | <a href="#SkPaint_setAutohinted">setAutohinted</a> | sets <a href="#Glyph">Glyphs</a> to always be hinted | |
| 207 | | <a href="#SkPaint_setBlendMode">setBlendMode</a> | sets <a href="undocumented#Blend_Mode">Blend Mode</a>, how colors combine with destination | |
| 208 | | <a href="#SkPaint_setColor">setColor</a> | sets <a href="#Alpha">Color Alpha</a> and <a href="#RGB">Color RGB</a>, one drawing color | |
| 209 | | <a href="#SkPaint_setColorFilter">setColorFilter</a> | sets <a href="undocumented#Color_Filter">Color Filter</a>, alters color | |
| 210 | | <a href="#SkPaint_setDevKernText">setDevKernText</a> | sets or clears <a href="SkPaint_Reference#Full_Hinting_Spacing">Full Hinting Spacing</a> | |
| 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 | |
| 213 | | <a href="#SkPaint_setEmbeddedBitmapText">setEmbeddedBitmapText</a> | sets or clears <a href="SkPaint_Reference#Font_Embedded_Bitmaps">Font Embedded Bitmaps</a> | |
| 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 | |
| 219 | | <a href="#SkPaint_setLCDRenderText">setLCDRenderText</a> | sets or clears <a href="SkPaint_Reference#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 | |
| 229 | | <a href="#SkPaint_setSubpixelText">setSubpixelText</a> | sets or clears <a href="SkPaint_Reference#Subpixel_Text">Subpixel Text</a> | |
| 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 | |
| 239 | | <a href="#SkPaint_unflatten">unflatten</a> | populates from a serialized stream | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 240 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 241 | ## <a name="Initializers"></a> Initializers |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 242 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 243 | <a name="SkPaint_empty_constructor"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 244 | ## SkPaint |
| 245 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 246 | <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] | 247 | SkPaint() |
| 248 | </pre> |
| 249 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 250 | Constructs <a href="#Paint">Paint</a> with default values. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 251 | |
| 252 | | attribute | default value | |
| 253 | | --- | --- | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 254 | | Anti-alias | false | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 255 | | <a href="undocumented#Blend_Mode">Blend Mode</a> | <a href="#SkBlendMode_kSrcOver">SkBlendMode::kSrcOver</a> | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 256 | | <a href="undocumented#Color">Color</a> | <a href="undocumented#SK_ColorBLACK">SK ColorBLACK</a> | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 257 | | <a href="#Alpha">Color Alpha</a> | 255 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 258 | | <a href="undocumented#Color_Filter">Color Filter</a> | nullptr | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 259 | | <a href="#Dither">Dither</a> | false | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 260 | | <a href="undocumented#Draw_Looper">Draw Looper</a> | nullptr | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 261 | | <a href="#Fake_Bold">Fake Bold</a> | false | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 262 | | <a href="undocumented#Filter_Quality">Filter Quality</a> | <a href="undocumented#SkFilterQuality">kNone SkFilterQuality</a> | |
| 263 | | <a href="SkPaint_Reference#Font_Embedded_Bitmaps">Font Embedded Bitmaps</a> | false | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 264 | | <a href="#Automatic_Hinting">Automatic Hinting</a> | false | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 265 | | <a href="SkPaint_Reference#Full_Hinting_Spacing">Full Hinting Spacing</a> | false | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 266 | | <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] | 267 | | <a href="undocumented#Image_Filter">Image Filter</a> | nullptr | |
| 268 | | <a href="SkPaint_Reference#LCD_Text">LCD Text</a> | false | |
| 269 | | <a href="SkPaint_Reference#Linear_Text">Linear Text</a> | false | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 270 | | <a href="#Miter_Limit">Miter Limit</a> | 4 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 271 | | <a href="undocumented#Mask_Filter">Mask Filter</a> | nullptr | |
| 272 | | <a href="undocumented#Path_Effect">Path Effect</a> | nullptr | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 273 | | <a href="undocumented#Shader">Shader</a> | nullptr | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 274 | | <a href="#SkPaint_Style">Style</a> | <a href="#SkPaint_kFill_Style">kFill Style</a> | |
| 275 | | <a href="#Text_Align">Text Align</a> | <a href="#SkPaint_kLeft_Align">kLeft Align</a> | |
| 276 | | <a href="#Text_Encoding">Text Encoding</a> | <a href="#SkPaint_kUTF8_TextEncoding">kUTF8 TextEncoding</a> | |
| 277 | | <a href="#Text_Scale_X">Text Scale X</a> | 1 | |
| 278 | | <a href="#Text_Size">Text Size</a> | 12 | |
| 279 | | <a href="#Text_Skew_X">Text Skew X</a> | 0 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 280 | | <a href="undocumented#Typeface">Typeface</a> | nullptr | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 281 | | <a href="#Stroke_Cap">Stroke Cap</a> | <a href="#SkPaint_kButt_Cap">kButt Cap</a> | |
| 282 | | <a href="#Stroke_Join">Stroke Join</a> | <a href="#SkPaint_kMiter_Join">kMiter Join</a> | |
| 283 | | <a href="#Stroke_Width">Stroke Width</a> | 0 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 284 | | <a href="SkPaint_Reference#Subpixel_Text">Subpixel Text</a> | false | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 285 | | <a href="#Vertical_Text">Vertical Text</a> | false | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 286 | |
| 287 | 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] | 288 | 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] | 289 | build system. |
| 290 | |
| 291 | ### Return Value |
| 292 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 293 | default initialized <a href="#Paint">Paint</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 294 | |
| 295 | ### Example |
| 296 | |
| 297 | <div><fiddle-embed name="c4b2186d85c142a481298f7144295ffd"></fiddle-embed></div> |
| 298 | |
| 299 | --- |
| 300 | |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 301 | <a name="SkPaint_copy_const_SkPaint"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 302 | ## SkPaint |
| 303 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 304 | <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] | 305 | SkPaint(const SkPaint& paint) |
| 306 | </pre> |
| 307 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 308 | 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] | 309 | <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] | 310 | 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] | 311 | their references by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 312 | |
Update Docs | 949cfd4 | 2018-01-22 05:50:26 +0000 | [diff] [blame] | 313 | 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] | 314 | <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] | 315 | 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] | 316 | |
| 317 | ### Parameters |
| 318 | |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 319 | <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] | 320 | original to copy</td> |
| 321 | </tr> |
| 322 | </table> |
| 323 | |
| 324 | ### Return Value |
| 325 | |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 326 | shallow copy of <a href="#SkPaint_copy_const_SkPaint_paint">paint</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 327 | |
| 328 | ### Example |
| 329 | |
| 330 | <div><fiddle-embed name="b99971ad0ef243d617925289d963b62d"> |
| 331 | |
| 332 | #### Example Output |
| 333 | |
| 334 | ~~~~ |
| 335 | SK_ColorRED == paint1.getColor() |
| 336 | SK_ColorBLUE == paint2.getColor() |
| 337 | ~~~~ |
| 338 | |
| 339 | </fiddle-embed></div> |
| 340 | |
| 341 | --- |
| 342 | |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 343 | <a name="SkPaint_move_SkPaint"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 344 | ## SkPaint |
| 345 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 346 | <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] | 347 | SkPaint(SkPaint&& paint) |
| 348 | </pre> |
| 349 | |
Cary Clark | d0530ba | 2017-09-14 11:25:39 -0400 | [diff] [blame] | 350 | Implements a move constructor to avoid increasing the reference counts |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 351 | 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] | 352 | |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 353 | 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] | 354 | |
| 355 | ### Parameters |
| 356 | |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 357 | <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] | 358 | original to move</td> |
| 359 | </tr> |
| 360 | </table> |
| 361 | |
| 362 | ### Return Value |
| 363 | |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 364 | content of <a href="#SkPaint_move_SkPaint_paint">paint</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 365 | |
| 366 | ### Example |
| 367 | |
| 368 | <div><fiddle-embed name="8ed1488a503cd5282b86a51614aa90b1"> |
| 369 | |
| 370 | #### Example Output |
| 371 | |
| 372 | ~~~~ |
| 373 | path effect unique: true |
| 374 | ~~~~ |
| 375 | |
| 376 | </fiddle-embed></div> |
| 377 | |
| 378 | --- |
| 379 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 380 | <a name="SkPaint_reset"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 381 | ## reset |
| 382 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 383 | <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] | 384 | void reset() |
| 385 | </pre> |
| 386 | |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 387 | Sets all <a href="#Paint">Paint</a> contents to their initial values. This is equivalent to replacing |
| 388 | <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] | 389 | |
| 390 | ### Example |
| 391 | |
| 392 | <div><fiddle-embed name="ef269937ade7e7353635121d9a64f9f7"> |
| 393 | |
| 394 | #### Example Output |
| 395 | |
| 396 | ~~~~ |
| 397 | paint1 == paint2 |
| 398 | ~~~~ |
| 399 | |
| 400 | </fiddle-embed></div> |
| 401 | |
| 402 | --- |
| 403 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 404 | <a name="SkPaint_destructor"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 405 | ## ~SkPaint |
| 406 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 407 | <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] | 408 | ~SkPaint() |
| 409 | </pre> |
| 410 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 411 | 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] | 412 | <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] | 413 | 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] | 414 | |
| 415 | --- |
| 416 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 417 | ## <a name="Management"></a> Management |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 418 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 419 | <a name="SkPaint_copy_operator"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 420 | ## operator= |
| 421 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 422 | <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] | 423 | SkPaint& operator=(const SkPaint& paint) |
| 424 | </pre> |
| 425 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 426 | 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] | 427 | <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] | 428 | 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] | 429 | 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] | 430 | 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> |
| 431 | 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] | 432 | |
| 433 | ### Parameters |
| 434 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 435 | <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] | 436 | original to copy</td> |
| 437 | </tr> |
| 438 | </table> |
| 439 | |
| 440 | ### Return Value |
| 441 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 442 | content of <a href="#SkPaint_copy_operator_paint">paint</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 443 | |
| 444 | ### Example |
| 445 | |
| 446 | <div><fiddle-embed name="b476a9088f80dece176ed577807d3992"> |
| 447 | |
| 448 | #### Example Output |
| 449 | |
| 450 | ~~~~ |
| 451 | SK_ColorRED == paint1.getColor() |
| 452 | SK_ColorRED == paint2.getColor() |
| 453 | ~~~~ |
| 454 | |
| 455 | </fiddle-embed></div> |
| 456 | |
| 457 | --- |
| 458 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 459 | <a name="SkPaint_move_operator"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 460 | ## operator= |
| 461 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 462 | <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] | 463 | SkPaint& operator=(SkPaint&& paint) |
| 464 | </pre> |
| 465 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 466 | Moves the <a href="#SkPaint_move_operator_paint">paint</a> to avoid increasing the reference counts |
| 467 | 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] | 468 | prior destination are decreased by one; those objects are deleted if the resulting count |
| 469 | is zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 470 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 471 | 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] | 472 | |
| 473 | ### Parameters |
| 474 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 475 | <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] | 476 | original to move</td> |
| 477 | </tr> |
| 478 | </table> |
| 479 | |
| 480 | ### Return Value |
| 481 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 482 | content of <a href="#SkPaint_move_operator_paint">paint</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 483 | |
| 484 | ### Example |
| 485 | |
| 486 | <div><fiddle-embed name="9fb7459b097d713f5f1fe5675afe14f5"> |
| 487 | |
| 488 | #### Example Output |
| 489 | |
| 490 | ~~~~ |
| 491 | SK_ColorRED == paint2.getColor() |
| 492 | ~~~~ |
| 493 | |
| 494 | </fiddle-embed></div> |
| 495 | |
| 496 | --- |
| 497 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 498 | <a name="SkPaint_equal_operator"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 499 | ## operator== |
| 500 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 501 | <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] | 502 | bool operator==(const SkPaint& a, const SkPaint& b) |
| 503 | </pre> |
| 504 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 505 | 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] | 506 | 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] | 507 | <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] | 508 | |
| 509 | ### Parameters |
| 510 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 511 | <table> <tr> <td><a name="SkPaint_equal_operator_a"> <code><strong>a </strong></code> </a></td> <td> |
| 512 | <a href="#Paint">Paint</a> to compare</td> |
| 513 | </tr> <tr> <td><a name="SkPaint_equal_operator_b"> <code><strong>b </strong></code> </a></td> <td> |
| 514 | <a href="#Paint">Paint</a> to compare</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 515 | </tr> |
| 516 | </table> |
| 517 | |
| 518 | ### Return Value |
| 519 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 520 | true if <a href="#Paint">Paint</a> pair are equivalent |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 521 | |
| 522 | ### Example |
| 523 | |
| 524 | <div><fiddle-embed name="7481a948e34672720337a631830586dd"> |
| 525 | |
| 526 | #### Example Output |
| 527 | |
| 528 | ~~~~ |
| 529 | paint1 == paint2 |
| 530 | paint1 != paint2 |
| 531 | ~~~~ |
| 532 | |
| 533 | </fiddle-embed></div> |
| 534 | |
| 535 | --- |
| 536 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 537 | <a name="SkPaint_notequal_operator"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 538 | ## operator!= |
| 539 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 540 | <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] | 541 | bool operator!=(const SkPaint& a, const SkPaint& b) |
| 542 | </pre> |
| 543 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 544 | 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] | 545 | 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] | 546 | <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] | 547 | |
| 548 | ### Parameters |
| 549 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 550 | <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] | 551 | <a href="#Paint">Paint</a> to compare</td> |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 552 | </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] | 553 | <a href="#Paint">Paint</a> to compare</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 554 | </tr> |
| 555 | </table> |
| 556 | |
| 557 | ### Return Value |
| 558 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 559 | true if <a href="#Paint">Paint</a> pair are not equivalent |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 560 | |
| 561 | ### Example |
| 562 | |
| 563 | <div><fiddle-embed name="b6c8484b1187f555b435ad5369833be4"> |
| 564 | |
| 565 | #### Example Output |
| 566 | |
| 567 | ~~~~ |
| 568 | paint1 == paint2 |
| 569 | paint1 == paint2 |
| 570 | ~~~~ |
| 571 | |
| 572 | </fiddle-embed></div> |
| 573 | |
| 574 | --- |
| 575 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 576 | <a name="SkPaint_getHash"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 577 | ## getHash |
| 578 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 579 | <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] | 580 | uint32_t getHash() const |
| 581 | </pre> |
| 582 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 583 | 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] | 584 | Identical hashes guarantee that the paints are |
| 585 | equivalent, but differing hashes do not guarantee that the paints have differing |
| 586 | contents. |
| 587 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 588 | 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] | 589 | their hashes are also equal. |
| 590 | |
| 591 | The hash returned is platform and implementation specific. |
| 592 | |
| 593 | ### Return Value |
| 594 | |
| 595 | a shallow hash |
| 596 | |
| 597 | ### Example |
| 598 | |
| 599 | <div><fiddle-embed name="7f7e1b701361912b344f90ae6b530393"> |
| 600 | |
| 601 | #### Example Output |
| 602 | |
| 603 | ~~~~ |
| 604 | paint1 == paint2 |
| 605 | paint1.getHash() == paint2.getHash() |
| 606 | ~~~~ |
| 607 | |
| 608 | </fiddle-embed></div> |
| 609 | |
| 610 | --- |
| 611 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 612 | <a name="SkPaint_flatten"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 613 | ## flatten |
| 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 | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 616 | void flatten(SkWriteBuffer& buffer) const |
| 617 | </pre> |
| 618 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 619 | Serializes <a href="#Paint">Paint</a> into a <a href="#SkPaint_flatten_buffer">buffer</a>. A companion <a href="#SkPaint_unflatten">unflatten</a> call |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 620 | can reconstitute the paint at a later time. |
| 621 | |
| 622 | ### Parameters |
| 623 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 624 | <table> <tr> <td><a name="SkPaint_flatten_buffer"> <code><strong>buffer </strong></code> </a></td> <td> |
| 625 | <a href="undocumented#Write_Buffer">Write Buffer</a> receiving the flattened <a href="#Paint">Paint</a> data</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 626 | </tr> |
| 627 | </table> |
| 628 | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 629 | --- |
| 630 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 631 | <a name="SkPaint_unflatten"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 632 | ## unflatten |
| 633 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 634 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
Update Docs | ad2cd56 | 2018-01-19 05:52:02 +0000 | [diff] [blame] | 635 | bool unflatten(SkReadBuffer& buffer) |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 636 | </pre> |
| 637 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 638 | Populates <a href="#Paint">Paint</a>, typically from a serialized stream, created by calling |
| 639 | <a href="#SkPaint_flatten">flatten</a> at an earlier time. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 640 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 641 | <a href="undocumented#SkReadBuffer">SkReadBuffer</a> class is not public, so <a href="#SkPaint_unflatten">unflatten</a> cannot be meaningfully called |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 642 | by the client. |
| 643 | |
| 644 | ### Parameters |
| 645 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 646 | <table> <tr> <td><a name="SkPaint_unflatten_buffer"> <code><strong>buffer </strong></code> </a></td> <td> |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 647 | serialized data describing <a href="#Paint">Paint</a> content</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 648 | </tr> |
| 649 | </table> |
| 650 | |
Update Docs | ad2cd56 | 2018-01-19 05:52:02 +0000 | [diff] [blame] | 651 | ### Return Value |
| 652 | |
Cary Clark | 5081eed | 2018-01-22 07:55:48 -0500 | [diff] [blame] | 653 | false if the <a href="#SkPaint_unflatten_buffer">buffer</a> contains invalid data |
| 654 | |
Cary Clark | 2ade997 | 2017-11-02 17:49:34 -0400 | [diff] [blame] | 655 | ### See Also |
| 656 | |
| 657 | <a href="undocumented#SkReadBuffer">SkReadBuffer</a> |
| 658 | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 659 | --- |
| 660 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 661 | ## <a name="Hinting"></a> Hinting |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 662 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 663 | ## <a name="SkPaint_Hinting"></a> Enum SkPaint::Hinting |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 664 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 665 | <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] | 666 | enum <a href="#Hinting">Hinting</a> { |
| 667 | <a href="#SkPaint_kNo_Hinting">kNo Hinting</a> = 0, |
| 668 | <a href="#SkPaint_kSlight_Hinting">kSlight Hinting</a> = 1, |
| 669 | <a href="#SkPaint_kNormal_Hinting">kNormal Hinting</a> = 2, |
| 670 | <a href="#SkPaint_kFull_Hinting">kFull Hinting</a> = 3, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 671 | };</pre> |
| 672 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 673 | <a href="#Hinting">Hinting</a> adjusts the glyph outlines so that the shape provides a uniform |
| 674 | 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] | 675 | muted effect or no effect at all depending on the platform. |
| 676 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 677 | The four levels roughly control corresponding features on platforms that use FreeType |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 678 | as the <a href="#Engine">Font Engine</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 679 | |
| 680 | ### Constants |
| 681 | |
| 682 | <table> |
| 683 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 684 | <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] | 685 | With FreeType, this is equivalent to the FT_LOAD_NO_HINTING |
| 686 | 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] | 687 | outline being loaded should not be fitted to the pixel grid but simply scaled |
| 688 | to 26.6 fractional pixels.</td> |
| 689 | </tr> |
| 690 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 691 | <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] | 692 | With FreeType, this is equivalent in spirit to the |
| 693 | 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] | 694 | lighter hinting algorithm for non-monochrome modes. |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 695 | Generated <a href="#Glyph">Glyphs</a> may be fuzzy but better resemble their original shape.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 696 | </tr> |
| 697 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 698 | <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] | 699 | With FreeType, this supplies FT_LOAD_TARGET_NORMAL to FT_Load_Glyph, |
| 700 | choosing the default hinting algorithm, which is optimized for standard |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 701 | gray-level rendering.</td> |
| 702 | </tr> |
| 703 | <tr> |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 704 | <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 |
| 705 | FT_LOAD_TARGET_LCD or FT_LOAD_TARGET_LCD_V if <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a> is set. |
| 706 | FT_LOAD_TARGET_LCD is a variant of FT_LOAD_TARGET_NORMAL optimized for |
| 707 | horizontally decimated LCD displays; FT_LOAD_TARGET_LCD_V is a |
| 708 | variant of FT_LOAD_TARGET_NORMAL optimized for vertically decimated LCD displays.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 709 | </tr> |
| 710 | </table> |
| 711 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 712 | On Windows with DirectWrite, <a href="#Hinting">Hinting</a> has no effect. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 713 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 714 | <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] | 715 | 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] | 716 | |
| 717 | |
| 718 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 719 | <a name="SkPaint_getHinting"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 720 | ## getHinting |
| 721 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 722 | <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] | 723 | Hinting getHinting() const |
| 724 | </pre> |
| 725 | |
| 726 | Returns level of glyph outline adjustment. |
| 727 | |
| 728 | ### Return Value |
| 729 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 730 | 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] | 731 | |
| 732 | ### Example |
| 733 | |
| 734 | <div><fiddle-embed name="329e2e5a5919ac431e1c58878a5b99e0"> |
| 735 | |
| 736 | #### Example Output |
| 737 | |
| 738 | ~~~~ |
| 739 | SkPaint::kNormal_Hinting == paint.getHinting() |
| 740 | ~~~~ |
| 741 | |
| 742 | </fiddle-embed></div> |
| 743 | |
| 744 | --- |
| 745 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 746 | <a name="SkPaint_setHinting"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 747 | ## setHinting |
| 748 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 749 | <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] | 750 | void setHinting(Hinting hintingLevel) |
| 751 | </pre> |
| 752 | |
| 753 | Sets level of glyph outline adjustment. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 754 | 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] | 755 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 756 | | <a href="#Hinting">Hinting</a> | value | effect on generated glyph outlines | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 757 | | --- | --- | --- | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 758 | | <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] | 759 | | <a href="#SkPaint_kSlight_Hinting">kSlight Hinting</a> | 1 | modifies glyph outlines minimally to improve contrast | |
| 760 | | <a href="#SkPaint_kNormal_Hinting">kNormal Hinting</a> | 2 | modifies glyph outlines to improve contrast | |
| 761 | | <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] | 762 | |
| 763 | ### Parameters |
| 764 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 765 | <table> <tr> <td><a name="SkPaint_setHinting_hintingLevel"> <code><strong>hintingLevel </strong></code> </a></td> <td> |
| 766 | 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] | 767 | </tr> |
| 768 | </table> |
| 769 | |
| 770 | ### Example |
| 771 | |
| 772 | <div><fiddle-embed name="78153fbd3f1000cb33b97bbe831ed34e"> |
| 773 | |
| 774 | #### Example Output |
| 775 | |
| 776 | ~~~~ |
| 777 | paint1 == paint2 |
| 778 | ~~~~ |
| 779 | |
| 780 | </fiddle-embed></div> |
| 781 | |
| 782 | --- |
| 783 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 784 | ## <a name="Flags"></a> Flags |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 785 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 786 | ## <a name="SkPaint_Flags"></a> Enum SkPaint::Flags |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 787 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 788 | <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] | 789 | enum <a href="#Flags">Flags</a> { |
| 790 | <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a> = 0x01, |
| 791 | <a href="#SkPaint_kDither_Flag">kDither Flag</a> = 0x04, |
| 792 | <a href="#SkPaint_kFakeBoldText_Flag">kFakeBoldText Flag</a> = 0x20, |
| 793 | <a href="#SkPaint_kLinearText_Flag">kLinearText Flag</a> = 0x40, |
| 794 | <a href="#SkPaint_kSubpixelText_Flag">kSubpixelText Flag</a> = 0x80, |
| 795 | <a href="#SkPaint_kDevKernText_Flag">kDevKernText Flag</a> = 0x100, |
| 796 | <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a> = 0x200, |
| 797 | <a href="#SkPaint_kEmbeddedBitmapText_Flag">kEmbeddedBitmapText Flag</a> = 0x400, |
| 798 | <a href="#SkPaint_kAutoHinting_Flag">kAutoHinting Flag</a> = 0x800, |
| 799 | <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> = 0x1000, |
| 800 | <a href="#SkPaint_kGenA8FromLCD_Flag">kGenA8FromLCD Flag</a> = 0x2000, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 801 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 802 | <a href="#SkPaint_kAllFlags">kAllFlags</a> = 0xFFFF, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 803 | }; |
| 804 | </pre> |
| 805 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 806 | The bit values stored in <a href="#Flags">Flags</a>. |
| 807 | 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] | 808 | 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] | 809 | 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] | 810 | multiple settings at once. |
| 811 | |
| 812 | ### Constants |
| 813 | |
| 814 | <table> |
| 815 | <tr> |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 816 | <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] | 817 | </tr> |
| 818 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 819 | <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] | 820 | </tr> |
| 821 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 822 | <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] | 823 | </tr> |
| 824 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 825 | <td><a name="SkPaint_kLinearText_Flag"> <code><strong>SkPaint::kLinearText_Flag </strong></code> </a></td><td>0x0040</td><td>mask for setting <a href="SkPaint_Reference#Linear_Text">Linear Text</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 826 | </tr> |
| 827 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 828 | <td><a name="SkPaint_kSubpixelText_Flag"> <code><strong>SkPaint::kSubpixelText_Flag </strong></code> </a></td><td>0x0080</td><td>mask for setting <a href="SkPaint_Reference#Subpixel_Text">Subpixel Text</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 829 | </tr> |
| 830 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 831 | <td><a name="SkPaint_kDevKernText_Flag"> <code><strong>SkPaint::kDevKernText_Flag </strong></code> </a></td><td>0x0100</td><td>mask for setting <a href="SkPaint_Reference#Full_Hinting_Spacing">Full Hinting Spacing</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 832 | </tr> |
| 833 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 834 | <td><a name="SkPaint_kLCDRenderText_Flag"> <code><strong>SkPaint::kLCDRenderText_Flag </strong></code> </a></td><td>0x0200</td><td>mask for setting <a href="SkPaint_Reference#LCD_Text">LCD Text</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 835 | </tr> |
| 836 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 837 | <td><a name="SkPaint_kEmbeddedBitmapText_Flag"> <code><strong>SkPaint::kEmbeddedBitmapText_Flag </strong></code> </a></td><td>0x0400</td><td>mask for setting <a href="SkPaint_Reference#Font_Embedded_Bitmaps">Font Embedded Bitmaps</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 838 | </tr> |
| 839 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 840 | <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] | 841 | </tr> |
| 842 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 843 | <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] | 844 | </tr> |
| 845 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 846 | <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] | 847 | </tr> |
| 848 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 849 | <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] | 850 | </tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 851 | <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] | 852 | |
| 853 | </table> |
| 854 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 855 | ## <a name="SkPaint_ReserveFlags"></a> Enum SkPaint::ReserveFlags |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 856 | |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 857 | soonOnly valid for Android framework. |
| 858 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 859 | <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] | 860 | enum <a href="#SkPaint_ReserveFlags">ReserveFlags</a> { |
| 861 | <a href="#SkPaint_kUnderlineText_ReserveFlag">kUnderlineText ReserveFlag</a> = 0x08, |
| 862 | <a href="#SkPaint_kStrikeThruText_ReserveFlag">kStrikeThruText ReserveFlag</a> = 0x10, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 863 | };</pre> |
| 864 | |
| 865 | ### Constants |
| 866 | |
| 867 | <table> |
| 868 | <tr> |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 869 | <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] | 870 | </tr> |
| 871 | <tr> |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 872 | <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] | 873 | </tr> |
Cary Clark | 4855f78 | 2018-02-06 09:41:53 -0500 | [diff] [blame] | 874 | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 875 | </table> |
| 876 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 877 | <a name="SkPaint_getFlags"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 878 | ## getFlags |
| 879 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 880 | <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] | 881 | uint32_t getFlags() const |
| 882 | </pre> |
| 883 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 884 | Returns paint settings described by <a href="#Flags">Flags</a>. Each setting uses one |
| 885 | bit, and can be tested with <a href="#Flags">Flags</a> members. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 886 | |
| 887 | ### Return Value |
| 888 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 889 | zero, one, or more bits described by <a href="#Flags">Flags</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 890 | |
| 891 | ### Example |
| 892 | |
| 893 | <div><fiddle-embed name="8a3f8c309533388b01aa66e1267f322d"> |
| 894 | |
| 895 | #### Example Output |
| 896 | |
| 897 | ~~~~ |
| 898 | (SkPaint::kAntiAlias_Flag & paint.getFlags()) != 0 |
| 899 | ~~~~ |
| 900 | |
| 901 | </fiddle-embed></div> |
| 902 | |
| 903 | --- |
| 904 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 905 | <a name="SkPaint_setFlags"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 906 | ## setFlags |
| 907 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 908 | <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] | 909 | void setFlags(uint32_t flags) |
| 910 | </pre> |
| 911 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 912 | Replaces <a href="#Flags">Flags</a> with <a href="#SkPaint_setFlags_flags">flags</a>, the union of the <a href="#Flags">Flags</a> members. |
| 913 | 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] | 914 | |
| 915 | ### Parameters |
| 916 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 917 | <table> <tr> <td><a name="SkPaint_setFlags_flags"> <code><strong>flags </strong></code> </a></td> <td> |
| 918 | 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] | 919 | </tr> |
| 920 | </table> |
| 921 | |
| 922 | ### Example |
| 923 | |
| 924 | <div><fiddle-embed name="54baed3f6bc4b9c31ba664e27767fdc7"> |
| 925 | |
| 926 | #### Example Output |
| 927 | |
| 928 | ~~~~ |
| 929 | paint.isAntiAlias() |
| 930 | paint.isDither() |
| 931 | ~~~~ |
| 932 | |
| 933 | </fiddle-embed></div> |
| 934 | |
| 935 | --- |
| 936 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 937 | ## <a name="Anti-alias"></a> Anti-alias |
| 938 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 939 | Anti-alias drawing approximates partial pixel coverage with transparency. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 940 | If <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a> is clear, pixel centers contained by the shape edge are drawn opaque. |
| 941 | If <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a> is set, pixels are drawn with <a href="#Alpha">Color Alpha</a> equal to their coverage. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 942 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 943 | The rule for <a href="#Alias">Aliased</a> pixels is inconsistent across platforms. A shape edge |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 944 | passing through the pixel center may, but is not required to, draw the pixel. |
| 945 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 946 | <a href="undocumented#Raster_Engine">Raster Engine</a> draws <a href="#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] | 947 | 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] | 948 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 949 | 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] | 950 | <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] | 951 | <a href="undocumented#Alias">Alias</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 952 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 953 | 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] | 954 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 955 | Anti-alias is disabled by default. |
| 956 | 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] | 957 | at compile time. |
| 958 | |
| 959 | ### Example |
| 960 | |
| 961 | <div><fiddle-embed name="a6575a49467ce8d28bb01cc7638fa04d"><div>A red line is drawn with transparency on the edges to make it look smoother. |
| 962 | A blue line draws only where the pixel centers are contained. |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 963 | The lines are drawn into <a href="SkBitmap_Reference#Bitmap">Bitmap</a>, then drawn magnified to make the |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 964 | <a href="#Alias">Aliasing</a> easier to see.</div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 965 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 966 | <a name="SkPaint_isAntiAlias"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 967 | ## isAntiAlias |
| 968 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 969 | <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] | 970 | bool isAntiAlias() const |
| 971 | </pre> |
| 972 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 973 | 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] | 974 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 975 | 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] | 976 | |
| 977 | ### Return Value |
| 978 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 979 | <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 980 | |
| 981 | ### Example |
| 982 | |
| 983 | <div><fiddle-embed name="d7d5f4f7da7acd5104a652f490c6f7b8"> |
| 984 | |
| 985 | #### Example Output |
| 986 | |
| 987 | ~~~~ |
| 988 | paint.isAntiAlias() == !!(paint.getFlags() & SkPaint::kAntiAlias_Flag) |
| 989 | paint.isAntiAlias() == !!(paint.getFlags() & SkPaint::kAntiAlias_Flag) |
| 990 | ~~~~ |
| 991 | |
| 992 | </fiddle-embed></div> |
| 993 | |
| 994 | --- |
| 995 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 996 | <a name="SkPaint_setAntiAlias"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 997 | ## setAntiAlias |
| 998 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 999 | <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] | 1000 | void setAntiAlias(bool aa) |
| 1001 | </pre> |
| 1002 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1003 | 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] | 1004 | partial transparency. |
| 1005 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1006 | Sets <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a> if <a href="#SkPaint_setAntiAlias_aa">aa</a> is true. |
| 1007 | 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] | 1008 | |
| 1009 | ### Parameters |
| 1010 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1011 | <table> <tr> <td><a name="SkPaint_setAntiAlias_aa"> <code><strong>aa </strong></code> </a></td> <td> |
| 1012 | setting for <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1013 | </tr> |
| 1014 | </table> |
| 1015 | |
| 1016 | ### Example |
| 1017 | |
| 1018 | <div><fiddle-embed name="c2ff148374d01cbef845b223e725905c"> |
| 1019 | |
| 1020 | #### Example Output |
| 1021 | |
| 1022 | ~~~~ |
| 1023 | paint1 == paint2 |
| 1024 | ~~~~ |
| 1025 | |
| 1026 | </fiddle-embed></div> |
| 1027 | |
| 1028 | --- |
| 1029 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 1030 | ## <a name="Dither"></a> Dither |
| 1031 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1032 | <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] | 1033 | This can help to smooth color transitions and reducing banding in gradients. |
Cary Clark | 2dc84ad | 2018-01-26 12:56:22 -0500 | [diff] [blame] | 1034 | Dithering lessens visible banding from <a href="SkImageInfo_Reference#SkColorType">kRGB 565 SkColorType</a> |
| 1035 | and <a href="SkImageInfo_Reference#SkColorType">kRGBA 8888 SkColorType</a> gradients, |
| 1036 | and improves rendering into a <a href="SkImageInfo_Reference#SkColorType">kRGB 565 SkColorType</a> <a href="SkSurface_Reference#Surface">Surface</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1037 | |
| 1038 | Dithering is always enabled for linear gradients drawing into |
Cary Clark | 2dc84ad | 2018-01-26 12:56:22 -0500 | [diff] [blame] | 1039 | <a href="SkImageInfo_Reference#SkColorType">kRGB 565 SkColorType</a> <a href="SkSurface_Reference#Surface">Surface</a> and <a href="SkImageInfo_Reference#SkColorType">kRGBA 8888 SkColorType</a> <a href="SkSurface_Reference#Surface">Surface</a>. |
| 1040 | <a href="#Dither">Dither</a> cannot be enabled for <a href="SkImageInfo_Reference#SkColorType">kAlpha 8 SkColorType</a> <a href="SkSurface_Reference#Surface">Surface</a> and |
| 1041 | <a href="SkImageInfo_Reference#SkColorType">kRGBA F16 SkColorType</a> <a href="SkSurface_Reference#Surface">Surface</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1042 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1043 | <a href="#Dither">Dither</a> is disabled by default. |
| 1044 | <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] | 1045 | at compile time. |
| 1046 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1047 | 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] | 1048 | |
| 1049 | ### Example |
| 1050 | |
| 1051 | <div><fiddle-embed name="8b26507690b71462f44642b911890bbf"><div>Dithering in the bottom half more closely approximates the requested color by |
| 1052 | alternating nearby colors from pixel to pixel.</div></fiddle-embed></div> |
| 1053 | |
| 1054 | ### Example |
| 1055 | |
| 1056 | <div><fiddle-embed name="76d4d4a7931a48495e4d5f54e073be53"><div>Dithering introduces subtle adjustments to color to smooth gradients. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1057 | Drawing the gradient repeatedly with <a href="#SkBlendMode_kPlus">SkBlendMode::kPlus</a> exaggerates the |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1058 | dither, making it easier to see.</div></fiddle-embed></div> |
| 1059 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1060 | <a name="SkPaint_isDither"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1061 | ## isDither |
| 1062 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1063 | <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] | 1064 | bool isDither() const |
| 1065 | </pre> |
| 1066 | |
| 1067 | If true, color error may be distributed to smooth color transition. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1068 | 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] | 1069 | |
| 1070 | ### Return Value |
| 1071 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1072 | <a href="#SkPaint_kDither_Flag">kDither Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1073 | |
| 1074 | ### Example |
| 1075 | |
| 1076 | <div><fiddle-embed name="f4ce93f6c5e7335436a985377fd980c0"> |
| 1077 | |
| 1078 | #### Example Output |
| 1079 | |
| 1080 | ~~~~ |
| 1081 | paint.isDither() == !!(paint.getFlags() & SkPaint::kDither_Flag) |
| 1082 | paint.isDither() == !!(paint.getFlags() & SkPaint::kDither_Flag) |
| 1083 | ~~~~ |
| 1084 | |
| 1085 | </fiddle-embed></div> |
| 1086 | |
| 1087 | --- |
| 1088 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1089 | <a name="SkPaint_setDither"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1090 | ## setDither |
| 1091 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1092 | <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] | 1093 | void setDither(bool dither) |
| 1094 | </pre> |
| 1095 | |
| 1096 | Requests, but does not require, to distribute color error. |
| 1097 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1098 | Sets <a href="#SkPaint_kDither_Flag">kDither Flag</a> if <a href="#SkPaint_setDither_dither">dither</a> is true. |
| 1099 | 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] | 1100 | |
| 1101 | ### Parameters |
| 1102 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1103 | <table> <tr> <td><a name="SkPaint_setDither_dither"> <code><strong>dither </strong></code> </a></td> <td> |
| 1104 | setting for <a href="#SkPaint_kDither_Flag">kDither Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1105 | </tr> |
| 1106 | </table> |
| 1107 | |
| 1108 | ### Example |
| 1109 | |
| 1110 | <div><fiddle-embed name="69b7162e8324d9239dd02dd9ada2bdff"> |
| 1111 | |
| 1112 | #### Example Output |
| 1113 | |
| 1114 | ~~~~ |
| 1115 | paint1 == paint2 |
| 1116 | ~~~~ |
| 1117 | |
| 1118 | </fiddle-embed></div> |
| 1119 | |
| 1120 | ### See Also |
| 1121 | |
Cary Clark | 2dc84ad | 2018-01-26 12:56:22 -0500 | [diff] [blame] | 1122 | <a href="SkImageInfo_Reference#SkColorType">kRGB 565 SkColorType</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1123 | |
| 1124 | --- |
| 1125 | |
| 1126 | ### See Also |
| 1127 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1128 | Gradient <a href="#RGB">Color RGB</a>-565 |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1129 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 1130 | ## <a name="Device_Text"></a> Device Text |
| 1131 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1132 | <a href="SkPaint_Reference#LCD_Text">LCD Text</a> and <a href="SkPaint_Reference#Subpixel_Text">Subpixel Text</a> increase the precision of glyph position. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1133 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1134 | When set, <a href="#SkPaint_Flags">Flags</a> <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a> takes advantage of the organization of <a href="#RGB">Color RGB</a> stripes that |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1135 | create a color, and relies |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1136 | on the small size of the stripe and visual perception to make the color fringing imperceptible. |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1137 | <a href="SkPaint_Reference#LCD_Text">LCD Text</a> can be enabled on devices that orient stripes horizontally or vertically, and that order |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1138 | the color components as <a href="#RGB">Color RGB</a> or <a href="#RBG">Color RBG</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1139 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1140 | <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] | 1141 | As the opaqueness |
| 1142 | of the color increases, the edge of the glyph appears to move towards the outside of the pixel. |
| 1143 | |
| 1144 | Either or both techniques can be enabled. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1145 | <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a> and <a href="#SkPaint_kSubpixelText_Flag">kSubpixelText Flag</a> are clear by default. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1146 | <a href="SkPaint_Reference#LCD_Text">LCD Text</a> or <a href="SkPaint_Reference#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] | 1147 | <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] | 1148 | |
| 1149 | ### Example |
| 1150 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1151 | <div><fiddle-embed name="4606ae1be792d6bc46d496432f050ee9"><div>Four commas are drawn normally and with combinations of <a href="SkPaint_Reference#LCD_Text">LCD Text</a> and <a href="SkPaint_Reference#Subpixel_Text">Subpixel Text</a>. |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1152 | When <a href="SkPaint_Reference#Subpixel_Text">Subpixel Text</a> is disabled, the comma <a href="#Glyph">Glyphs</a> are identical, but not evenly spaced. |
| 1153 | When <a href="SkPaint_Reference#Subpixel_Text">Subpixel Text</a> is enabled, the comma <a href="#Glyph">Glyphs</a> are unique, but appear evenly spaced.</div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1154 | |
| 1155 | ## <a name="Linear_Text"></a> Linear Text |
| 1156 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1157 | <a href="SkPaint_Reference#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] | 1158 | 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] | 1159 | 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] | 1160 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1161 | <a name="SkPaint_isLinearText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1162 | ## isLinearText |
| 1163 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1164 | <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] | 1165 | bool isLinearText() const |
| 1166 | </pre> |
| 1167 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1168 | 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] | 1169 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1170 | 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] | 1171 | |
| 1172 | ### Return Value |
| 1173 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1174 | <a href="#SkPaint_kLinearText_Flag">kLinearText Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1175 | |
| 1176 | ### Example |
| 1177 | |
| 1178 | <div><fiddle-embed name="2890ad644f980637837e6fcb386fb462"></fiddle-embed></div> |
| 1179 | |
| 1180 | ### See Also |
| 1181 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1182 | <a href="#SkPaint_setLinearText">setLinearText</a> <a href="#SkPaint_Hinting">Hinting</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1183 | |
| 1184 | --- |
| 1185 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1186 | <a name="SkPaint_setLinearText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1187 | ## setLinearText |
| 1188 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1189 | <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] | 1190 | void setLinearText(bool linearText) |
| 1191 | </pre> |
| 1192 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1193 | 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] | 1194 | By default, <a href="#SkPaint_kLinearText_Flag">kLinearText Flag</a> is clear. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1195 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1196 | Sets <a href="#SkPaint_kLinearText_Flag">kLinearText Flag</a> if <a href="#SkPaint_setLinearText_linearText">linearText</a> is true. |
| 1197 | 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] | 1198 | |
| 1199 | ### Parameters |
| 1200 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1201 | <table> <tr> <td><a name="SkPaint_setLinearText_linearText"> <code><strong>linearText </strong></code> </a></td> <td> |
| 1202 | setting for <a href="#SkPaint_kLinearText_Flag">kLinearText Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1203 | </tr> |
| 1204 | </table> |
| 1205 | |
| 1206 | ### Example |
| 1207 | |
| 1208 | <div><fiddle-embed name="c93bb912f3bddfb4d96d3ad70ada552b"></fiddle-embed></div> |
| 1209 | |
| 1210 | ### See Also |
| 1211 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1212 | <a href="#SkPaint_isLinearText">isLinearText</a> <a href="#SkPaint_Hinting">Hinting</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1213 | |
| 1214 | --- |
| 1215 | |
| 1216 | ## <a name="Subpixel_Text"></a> Subpixel Text |
| 1217 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1218 | <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] | 1219 | As the opaqueness |
| 1220 | of the color increases, the edge of the glyph appears to move towards the outside of the pixel. |
| 1221 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1222 | <a name="SkPaint_isSubpixelText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1223 | ## isSubpixelText |
| 1224 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1225 | <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] | 1226 | bool isSubpixelText() const |
| 1227 | </pre> |
| 1228 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1229 | If true, <a href="#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] | 1230 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1231 | 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] | 1232 | |
| 1233 | ### Return Value |
| 1234 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1235 | <a href="#SkPaint_kSubpixelText_Flag">kSubpixelText Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1236 | |
| 1237 | ### Example |
| 1238 | |
| 1239 | <div><fiddle-embed name="abe9afc0932e2199324ae6cbb396e67c"> |
| 1240 | |
| 1241 | #### Example Output |
| 1242 | |
| 1243 | ~~~~ |
| 1244 | paint.isSubpixelText() == !!(paint.getFlags() & SkPaint::kSubpixelText_Flag) |
| 1245 | paint.isSubpixelText() == !!(paint.getFlags() & SkPaint::kSubpixelText_Flag) |
| 1246 | ~~~~ |
| 1247 | |
| 1248 | </fiddle-embed></div> |
| 1249 | |
| 1250 | --- |
| 1251 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1252 | <a name="SkPaint_setSubpixelText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1253 | ## setSubpixelText |
| 1254 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1255 | <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] | 1256 | void setSubpixelText(bool subpixelText) |
| 1257 | </pre> |
| 1258 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1259 | Requests, but does not require, that <a href="#Glyph">Glyphs</a> respect sub-pixel positioning. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1260 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1261 | Sets <a href="#SkPaint_kSubpixelText_Flag">kSubpixelText Flag</a> if <a href="#SkPaint_setSubpixelText_subpixelText">subpixelText</a> is true. |
| 1262 | 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] | 1263 | |
| 1264 | ### Parameters |
| 1265 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1266 | <table> <tr> <td><a name="SkPaint_setSubpixelText_subpixelText"> <code><strong>subpixelText </strong></code> </a></td> <td> |
| 1267 | setting for <a href="#SkPaint_kSubpixelText_Flag">kSubpixelText Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1268 | </tr> |
| 1269 | </table> |
| 1270 | |
| 1271 | ### Example |
| 1272 | |
| 1273 | <div><fiddle-embed name="a77bbc1a4e3be9a8ab0f842f877c5ee4"> |
| 1274 | |
| 1275 | #### Example Output |
| 1276 | |
| 1277 | ~~~~ |
| 1278 | paint1 == paint2 |
| 1279 | ~~~~ |
| 1280 | |
| 1281 | </fiddle-embed></div> |
| 1282 | |
| 1283 | --- |
| 1284 | |
| 1285 | ## <a name="LCD_Text"></a> LCD Text |
| 1286 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1287 | When set, <a href="#SkPaint_Flags">Flags</a> <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a> takes advantage of the organization of <a href="#RGB">Color RGB</a> stripes that |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1288 | create a color, and relies |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1289 | on the small size of the stripe and visual perception to make the color fringing imperceptible. |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1290 | <a href="SkPaint_Reference#LCD_Text">LCD Text</a> can be enabled on devices that orient stripes horizontally or vertically, and that order |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1291 | the color components as <a href="#RGB">Color RGB</a> or <a href="#RBG">Color RBG</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1292 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1293 | <a name="SkPaint_isLCDRenderText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1294 | ## isLCDRenderText |
| 1295 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1296 | <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] | 1297 | bool isLCDRenderText() const |
| 1298 | </pre> |
| 1299 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1300 | If true, <a href="#Glyph">Glyphs</a> may use LCD striping to improve glyph edges. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1301 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1302 | 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] | 1303 | |
| 1304 | ### Return Value |
| 1305 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1306 | <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1307 | |
| 1308 | ### Example |
| 1309 | |
| 1310 | <div><fiddle-embed name="68e1fd95dd2fd06a333899d2bd2396b9"> |
| 1311 | |
| 1312 | #### Example Output |
| 1313 | |
| 1314 | ~~~~ |
| 1315 | paint.isLCDRenderText() == !!(paint.getFlags() & SkPaint::kLCDRenderText_Flag) |
| 1316 | paint.isLCDRenderText() == !!(paint.getFlags() & SkPaint::kLCDRenderText_Flag) |
| 1317 | ~~~~ |
| 1318 | |
| 1319 | </fiddle-embed></div> |
| 1320 | |
| 1321 | --- |
| 1322 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1323 | <a name="SkPaint_setLCDRenderText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1324 | ## setLCDRenderText |
| 1325 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1326 | <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] | 1327 | void setLCDRenderText(bool lcdText) |
| 1328 | </pre> |
| 1329 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1330 | Requests, but does not require, that <a href="#Glyph">Glyphs</a> use LCD striping for glyph edges. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1331 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1332 | Sets <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a> if <a href="#SkPaint_setLCDRenderText_lcdText">lcdText</a> is true. |
| 1333 | 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] | 1334 | |
| 1335 | ### Parameters |
| 1336 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1337 | <table> <tr> <td><a name="SkPaint_setLCDRenderText_lcdText"> <code><strong>lcdText </strong></code> </a></td> <td> |
| 1338 | setting for <a href="#SkPaint_kLCDRenderText_Flag">kLCDRenderText Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1339 | </tr> |
| 1340 | </table> |
| 1341 | |
| 1342 | ### Example |
| 1343 | |
| 1344 | <div><fiddle-embed name="50dedf8450159571a3edaf4f0050defe"> |
| 1345 | |
| 1346 | #### Example Output |
| 1347 | |
| 1348 | ~~~~ |
| 1349 | paint1 == paint2 |
| 1350 | ~~~~ |
| 1351 | |
| 1352 | </fiddle-embed></div> |
| 1353 | |
| 1354 | --- |
| 1355 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 1356 | ## <a name="Font_Embedded_Bitmaps"></a> Font Embedded Bitmaps |
| 1357 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1358 | <a href="SkPaint_Reference#Font_Embedded_Bitmaps">Font Embedded Bitmaps</a> allows selecting custom sized bitmap <a href="#Glyph">Glyphs</a>. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1359 | <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] | 1360 | in a font if the platform supports this option. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1361 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1362 | 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] | 1363 | 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] | 1364 | Windows may select the bitmap glyph but is not required to do so. |
| 1365 | <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] | 1366 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1367 | <a href="SkPaint_Reference#Font_Embedded_Bitmaps">Font Embedded Bitmaps</a> is disabled by default. |
| 1368 | <a href="SkPaint_Reference#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] | 1369 | <a href="#SkPaint_kEmbeddedBitmapText_Flag">kEmbeddedBitmapText Flag</a> at compile time. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1370 | |
| 1371 | ### Example |
| 1372 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1373 | <pre style="padding: 1em 1em 1em 1em; font-size: 13px width: 62.5em; background-color: #f0f0f0"> |
| 1374 | void draw(SkCanvas* canvas) {<div>The "hintgasp" TrueType font in the Skia resources/fonts directory |
| 1375 | includes an embedded bitmap Glyph at odd font sizes. This example works |
| 1376 | on platforms that use FreeType as their Font_Engine. |
| 1377 | Windows may, but is not required to, return a bitmap glyph if |
| 1378 | kEmbeddedBitmapText_Flag is set.</div>SkBitmap bitmap; |
| 1379 | bitmap.allocN32Pixels(30, 15); |
| 1380 | bitmap.eraseColor(0); |
| 1381 | SkCanvas offscreen(bitmap); |
| 1382 | SkPaint paint; |
| 1383 | paint.setAntiAlias(true); |
| 1384 | paint.setTextSize(13); |
Hal Canary | 53e5e7d | 2017-12-08 14:25:14 -0500 | [diff] [blame] | 1385 | paint.setTypeface(MakeResourceAsTypeface("fonts/hintgasp.ttf")); |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1386 | for (bool embedded : { false, true}) { |
| 1387 | paint.setEmbeddedBitmapText(embedded); |
| 1388 | offscreen.drawString("A", embedded ? 5 : 15, 15, paint); |
| 1389 | } |
| 1390 | canvas->drawBitmap(bitmap, 0, 0); |
| 1391 | canvas->scale(10, 10); |
| 1392 | canvas->drawBitmap(bitmap, -2, 1); |
| 1393 | } |
| 1394 | </pre> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1395 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1396 | <a name="SkPaint_isEmbeddedBitmapText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1397 | ## isEmbeddedBitmapText |
| 1398 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1399 | <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] | 1400 | bool isEmbeddedBitmapText() const |
| 1401 | </pre> |
| 1402 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1403 | If true, <a href="#Engine">Font Engine</a> may return <a href="#Glyph">Glyphs</a> from font bitmaps instead of from outlines. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1404 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1405 | 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] | 1406 | |
| 1407 | ### Return Value |
| 1408 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1409 | <a href="#SkPaint_kEmbeddedBitmapText_Flag">kEmbeddedBitmapText Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1410 | |
| 1411 | ### Example |
| 1412 | |
| 1413 | <div><fiddle-embed name="eba10b27b790e87183ae451b3fc5c4b1"> |
| 1414 | |
| 1415 | #### Example Output |
| 1416 | |
| 1417 | ~~~~ |
| 1418 | paint.isEmbeddedBitmapText() == !!(paint.getFlags() & SkPaint::kEmbeddedBitmapText_Flag) |
| 1419 | paint.isEmbeddedBitmapText() == !!(paint.getFlags() & SkPaint::kEmbeddedBitmapText_Flag) |
| 1420 | ~~~~ |
| 1421 | |
| 1422 | </fiddle-embed></div> |
| 1423 | |
| 1424 | --- |
| 1425 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1426 | <a name="SkPaint_setEmbeddedBitmapText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1427 | ## setEmbeddedBitmapText |
| 1428 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1429 | <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] | 1430 | void setEmbeddedBitmapText(bool useEmbeddedBitmapText) |
| 1431 | </pre> |
| 1432 | |
| 1433 | Requests, but does not require, to use bitmaps in fonts instead of outlines. |
| 1434 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1435 | Sets <a href="#SkPaint_kEmbeddedBitmapText_Flag">kEmbeddedBitmapText Flag</a> if <a href="#SkPaint_setEmbeddedBitmapText_useEmbeddedBitmapText">useEmbeddedBitmapText</a> is true. |
| 1436 | 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] | 1437 | |
| 1438 | ### Parameters |
| 1439 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1440 | <table> <tr> <td><a name="SkPaint_setEmbeddedBitmapText_useEmbeddedBitmapText"> <code><strong>useEmbeddedBitmapText </strong></code> </a></td> <td> |
| 1441 | setting for <a href="#SkPaint_kEmbeddedBitmapText_Flag">kEmbeddedBitmapText Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1442 | </tr> |
| 1443 | </table> |
| 1444 | |
| 1445 | ### Example |
| 1446 | |
| 1447 | <div><fiddle-embed name="246dffdd93a484ba4ad7ecf71198a5d4"> |
| 1448 | |
| 1449 | #### Example Output |
| 1450 | |
| 1451 | ~~~~ |
| 1452 | paint1 == paint2 |
| 1453 | ~~~~ |
| 1454 | |
| 1455 | </fiddle-embed></div> |
| 1456 | |
| 1457 | --- |
| 1458 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 1459 | ## <a name="Automatic_Hinting"></a> Automatic Hinting |
| 1460 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1461 | 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 | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1462 | instructs the <a href="undocumented#Font_Manager">Font Manager</a> to always hint <a href="#Glyph">Glyphs</a>. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1463 | <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 |
| 1464 | <a href="#SkPaint_kSlight_Hinting">kSlight Hinting</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1465 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1466 | <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] | 1467 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1468 | <a name="SkPaint_isAutohinted"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1469 | ## isAutohinted |
| 1470 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1471 | <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] | 1472 | bool isAutohinted() const |
| 1473 | </pre> |
| 1474 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1475 | 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] | 1476 | 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 | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1477 | <a href="#Glyph">Glyphs</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 | 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] | 1480 | |
| 1481 | ### Return Value |
| 1482 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1483 | <a href="#SkPaint_kAutoHinting_Flag">kAutoHinting Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1484 | |
| 1485 | ### Example |
| 1486 | |
| 1487 | <div><fiddle-embed name="aa4781afbe3b90e7ef56a287e5b9ce1e"> |
| 1488 | |
| 1489 | #### Example Output |
| 1490 | |
| 1491 | ~~~~ |
| 1492 | paint.isAutohinted() == !!(paint.getFlags() & SkPaint::kAutoHinting_Flag) |
| 1493 | paint.isAutohinted() == !!(paint.getFlags() & SkPaint::kAutoHinting_Flag) |
| 1494 | ~~~~ |
| 1495 | |
| 1496 | </fiddle-embed></div> |
| 1497 | |
| 1498 | ### See Also |
| 1499 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1500 | <a href="#SkPaint_setAutohinted">setAutohinted</a> <a href="#SkPaint_Hinting">Hinting</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1501 | |
| 1502 | --- |
| 1503 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1504 | <a name="SkPaint_setAutohinted"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1505 | ## setAutohinted |
| 1506 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1507 | <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] | 1508 | void setAutohinted(bool useAutohinter) |
| 1509 | </pre> |
| 1510 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1511 | 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 | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1512 | instruct the <a href="undocumented#Font_Manager">Font Manager</a> to always hint <a href="#Glyph">Glyphs</a>. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1513 | <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 |
| 1514 | <a href="#SkPaint_kSlight_Hinting">kSlight Hinting</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1515 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1516 | 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] | 1517 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1518 | Sets <a href="#SkPaint_kAutoHinting_Flag">kAutoHinting Flag</a> if <a href="#SkPaint_setAutohinted_useAutohinter">useAutohinter</a> is true. |
| 1519 | 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] | 1520 | |
| 1521 | ### Parameters |
| 1522 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1523 | <table> <tr> <td><a name="SkPaint_setAutohinted_useAutohinter"> <code><strong>useAutohinter </strong></code> </a></td> <td> |
| 1524 | setting for <a href="#SkPaint_kAutoHinting_Flag">kAutoHinting Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1525 | </tr> |
| 1526 | </table> |
| 1527 | |
| 1528 | ### Example |
| 1529 | |
| 1530 | <div><fiddle-embed name="4e185306d7de9390fe8445eed0139309"></fiddle-embed></div> |
| 1531 | |
| 1532 | ### See Also |
| 1533 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1534 | <a href="#SkPaint_isAutohinted">isAutohinted</a> <a href="#SkPaint_Hinting">Hinting</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1535 | |
| 1536 | --- |
| 1537 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 1538 | ## <a name="Vertical_Text"></a> Vertical Text |
| 1539 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1540 | <a href="undocumented#Text">Text</a> may be drawn by positioning each glyph, or by positioning the first glyph and |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1541 | using <a href="#Advance">Font Advance</a> to position subsequent <a href="#Glyph">Glyphs</a>. By default, each successive glyph |
| 1542 | is positioned to the right of the preceding glyph. <a href="#Vertical_Text">Vertical Text</a> sets successive |
| 1543 | <a href="#Glyph">Glyphs</a> to position below the preceding glyph. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1544 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1545 | Skia can translate text character codes as a series of <a href="#Glyph">Glyphs</a>, but does not implement |
| 1546 | font substitution, |
| 1547 | textual substitution, line layout, or contextual spacing like Kerning pairs. Use |
| 1548 | 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] | 1549 | into glyph series. |
| 1550 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1551 | <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] | 1552 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1553 | <a href="#SkPaint_Flags">Flags</a> <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> if clear draws text left to right. |
| 1554 | <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] | 1555 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1556 | <a href="#Vertical_Text">Vertical Text</a> is clear by default. |
| 1557 | <a href="#Vertical_Text">Vertical Text</a> can be set by default by setting <a href="undocumented#SkPaintDefaults_Flags">SkPaintDefaults Flags</a> to |
| 1558 | <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> at compile time. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1559 | |
| 1560 | ### Example |
| 1561 | |
| 1562 | <div><fiddle-embed name="8df5800819311b71373d9abb669b49b8"></fiddle-embed></div> |
| 1563 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1564 | <a name="SkPaint_isVerticalText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1565 | ## isVerticalText |
| 1566 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1567 | <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] | 1568 | bool isVerticalText() const |
| 1569 | </pre> |
| 1570 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1571 | If true, <a href="#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] | 1572 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1573 | 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] | 1574 | |
| 1575 | ### Return Value |
| 1576 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1577 | <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1578 | |
| 1579 | ### Example |
| 1580 | |
| 1581 | <div><fiddle-embed name="4a269b16e644d473870ffa873396f139"> |
| 1582 | |
| 1583 | #### Example Output |
| 1584 | |
| 1585 | ~~~~ |
| 1586 | paint.isVerticalText() == !!(paint.getFlags() & SkPaint::kVerticalText_Flag) |
| 1587 | paint.isVerticalText() == !!(paint.getFlags() & SkPaint::kVerticalText_Flag) |
| 1588 | ~~~~ |
| 1589 | |
| 1590 | </fiddle-embed></div> |
| 1591 | |
| 1592 | --- |
| 1593 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1594 | <a name="SkPaint_setVerticalText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1595 | ## setVerticalText |
| 1596 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1597 | <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] | 1598 | void setVerticalText(bool verticalText) |
| 1599 | </pre> |
| 1600 | |
| 1601 | If true, text advance positions the next glyph below the previous glyph instead of to the |
| 1602 | right of previous glyph. |
| 1603 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1604 | Sets <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> if vertical is true. |
| 1605 | 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] | 1606 | |
| 1607 | ### Parameters |
| 1608 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1609 | <table> <tr> <td><a name="SkPaint_setVerticalText_verticalText"> <code><strong>verticalText </strong></code> </a></td> <td> |
| 1610 | setting for <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1611 | </tr> |
| 1612 | </table> |
| 1613 | |
| 1614 | ### Example |
| 1615 | |
| 1616 | <div><fiddle-embed name="6fbd7e9e1a346cb8d7f537786009c736"> |
| 1617 | |
| 1618 | #### Example Output |
| 1619 | |
| 1620 | ~~~~ |
| 1621 | paint1 == paint2 |
| 1622 | ~~~~ |
| 1623 | |
| 1624 | </fiddle-embed></div> |
| 1625 | |
| 1626 | --- |
| 1627 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 1628 | ## <a name="Fake_Bold"></a> Fake Bold |
| 1629 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1630 | <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] | 1631 | 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] | 1632 | 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] | 1633 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1634 | 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] | 1635 | is not available. |
| 1636 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1637 | A FreeType based port may define SK_USE_FREETYPE_EMBOLDEN at compile time to direct |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1638 | the font engine to create the bold <a href="#Glyph">Glyphs</a>. Otherwise, the extra bold is computed |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1639 | 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] | 1640 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1641 | <a href="#Fake_Bold">Fake Bold</a> is disabled by default. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1642 | |
| 1643 | ### Example |
| 1644 | |
| 1645 | <div><fiddle-embed name="e811f4829a2daaaeaad3795504a7e02a"></fiddle-embed></div> |
| 1646 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1647 | <a name="SkPaint_isFakeBoldText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1648 | ## isFakeBoldText |
| 1649 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1650 | <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] | 1651 | bool isFakeBoldText() const |
| 1652 | </pre> |
| 1653 | |
| 1654 | If true, approximate bold by increasing the stroke width when creating glyph bitmaps |
| 1655 | from outlines. |
| 1656 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1657 | 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] | 1658 | |
| 1659 | ### Return Value |
| 1660 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1661 | <a href="#SkPaint_kFakeBoldText_Flag">kFakeBoldText Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1662 | |
| 1663 | ### Example |
| 1664 | |
| 1665 | <div><fiddle-embed name="f54d1f85b16073b80b9eef2e1a1d151d"> |
| 1666 | |
| 1667 | #### Example Output |
| 1668 | |
| 1669 | ~~~~ |
| 1670 | paint.isFakeBoldText() == !!(paint.getFlags() & SkPaint::kFakeBoldText_Flag) |
| 1671 | paint.isFakeBoldText() == !!(paint.getFlags() & SkPaint::kFakeBoldText_Flag) |
| 1672 | ~~~~ |
| 1673 | |
| 1674 | </fiddle-embed></div> |
| 1675 | |
| 1676 | --- |
| 1677 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1678 | <a name="SkPaint_setFakeBoldText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1679 | ## setFakeBoldText |
| 1680 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1681 | <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] | 1682 | void setFakeBoldText(bool fakeBoldText) |
| 1683 | </pre> |
| 1684 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1685 | 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] | 1686 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1687 | Sets <a href="#SkPaint_kFakeBoldText_Flag">kFakeBoldText Flag</a> if <a href="#SkPaint_setFakeBoldText_fakeBoldText">fakeBoldText</a> is true. |
| 1688 | 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] | 1689 | |
| 1690 | ### Parameters |
| 1691 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1692 | <table> <tr> <td><a name="SkPaint_setFakeBoldText_fakeBoldText"> <code><strong>fakeBoldText </strong></code> </a></td> <td> |
| 1693 | setting for <a href="#SkPaint_kFakeBoldText_Flag">kFakeBoldText Flag</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1694 | </tr> |
| 1695 | </table> |
| 1696 | |
| 1697 | ### Example |
| 1698 | |
| 1699 | <div><fiddle-embed name="594d47858eb11028cb626515a520910a"> |
| 1700 | |
| 1701 | #### Example Output |
| 1702 | |
| 1703 | ~~~~ |
| 1704 | paint1 == paint2 |
| 1705 | ~~~~ |
| 1706 | |
| 1707 | </fiddle-embed></div> |
| 1708 | |
| 1709 | --- |
| 1710 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 1711 | ## <a name="Full_Hinting_Spacing"></a> Full Hinting Spacing |
| 1712 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1713 | if <a href="#SkPaint_Hinting">Hinting</a> is set to <a href="#SkPaint_kFull_Hinting">kFull Hinting</a>, <a href="SkPaint_Reference#Full_Hinting_Spacing">Full Hinting Spacing</a> adjusts the character |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1714 | spacing by the difference of the hinted and Unhinted <a href="undocumented#Left_Side_Bearing">Left Side Bearing</a> and |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1715 | <a href="undocumented#Right_Side_Bearing">Right Side Bearing</a>. <a href="SkPaint_Reference#Full_Hinting_Spacing">Full Hinting Spacing</a> only applies to platforms that use |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1716 | FreeType as their <a href="#Engine">Font Engine</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1717 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1718 | <a href="SkPaint_Reference#Full_Hinting_Spacing">Full Hinting Spacing</a> is not related to text Kerning, where the space between |
| 1719 | 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] | 1720 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1721 | <a name="SkPaint_isDevKernText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1722 | ## isDevKernText |
| 1723 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1724 | <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] | 1725 | bool isDevKernText() const |
| 1726 | </pre> |
| 1727 | |
| 1728 | Returns if character spacing may be adjusted by the hinting difference. |
| 1729 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1730 | 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] | 1731 | |
| 1732 | ### Return Value |
| 1733 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1734 | <a href="#SkPaint_kDevKernText_Flag">kDevKernText Flag</a> state |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1735 | |
| 1736 | ### Example |
| 1737 | |
| 1738 | <div><fiddle-embed name="4f69a84b2505b12809c30b0cc09c5157"></fiddle-embed></div> |
| 1739 | |
| 1740 | --- |
| 1741 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1742 | <a name="SkPaint_setDevKernText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1743 | ## setDevKernText |
| 1744 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1745 | <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] | 1746 | void setDevKernText(bool devKernText) |
| 1747 | </pre> |
| 1748 | |
| 1749 | Requests, but does not require, to use hinting to adjust glyph spacing. |
| 1750 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1751 | Sets <a href="#SkPaint_kDevKernText_Flag">kDevKernText Flag</a> if <a href="#SkPaint_setDevKernText_devKernText">devKernText</a> is true. |
| 1752 | 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] | 1753 | |
| 1754 | ### Parameters |
| 1755 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1756 | <table> <tr> <td><a name="SkPaint_setDevKernText_devKernText"> <code><strong>devKernText </strong></code> </a></td> <td> |
| 1757 | setting for <a href="#SkPaint_setDevKernText_devKernText">devKernText</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1758 | </tr> |
| 1759 | </table> |
| 1760 | |
| 1761 | ### Example |
| 1762 | |
| 1763 | <div><fiddle-embed name="2b718a059072908bf68942503f264797"> |
| 1764 | |
| 1765 | #### Example Output |
| 1766 | |
| 1767 | ~~~~ |
| 1768 | paint1 == paint2 |
| 1769 | ~~~~ |
| 1770 | |
| 1771 | </fiddle-embed></div> |
| 1772 | |
| 1773 | --- |
| 1774 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 1775 | ## <a name="Filter_Quality_Methods"></a> Filter Quality Methods |
| 1776 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1777 | <a href="undocumented#Filter_Quality">Filter Quality</a> trades speed for image filtering when the image is scaled. |
| 1778 | A lower <a href="undocumented#Filter_Quality">Filter Quality</a> draws faster, but has less fidelity. |
| 1779 | 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] | 1780 | If the image is drawn without scaling, the <a href="undocumented#Filter_Quality">Filter Quality</a> choice will not result |
| 1781 | in a noticeable difference. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1782 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1783 | <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] | 1784 | |
| 1785 | <table> <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1786 | <td><a href="#SkCanvas_drawBitmap">SkCanvas::drawBitmap</a></td> </tr> <tr> |
| 1787 | <td><a href="#SkCanvas_drawBitmapRect">SkCanvas::drawBitmapRect</a></td> </tr> <tr> |
| 1788 | <td><a href="#SkCanvas_drawImage">SkCanvas::drawImage</a></td> </tr> <tr> |
| 1789 | <td><a href="#SkCanvas_drawImageRect">SkCanvas::drawImageRect</a></td> </tr> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1790 | </table> |
| 1791 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1792 | 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] | 1793 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1794 | <a href="undocumented#Filter_Quality">Filter Quality</a> is <a href="undocumented#SkFilterQuality">kNone SkFilterQuality</a> by default. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1795 | |
| 1796 | ### Example |
| 1797 | |
| 1798 | <div><fiddle-embed name="ee77f83f7291e07ae0d89f1380c7d67c"></fiddle-embed></div> |
| 1799 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1800 | <a name="SkPaint_getFilterQuality"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1801 | ## getFilterQuality |
| 1802 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1803 | <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] | 1804 | SkFilterQuality getFilterQuality() const |
| 1805 | </pre> |
| 1806 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1807 | 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] | 1808 | draws faster; a higher setting looks better when the image is scaled. |
| 1809 | |
| 1810 | ### Return Value |
| 1811 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1812 | one of: <a href="undocumented#SkFilterQuality">kNone SkFilterQuality</a>, <a href="undocumented#SkFilterQuality">kLow SkFilterQuality</a>, |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1813 | <a href="undocumented#SkFilterQuality">kMedium SkFilterQuality</a>, <a href="undocumented#SkFilterQuality">kHigh SkFilterQuality</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1814 | |
| 1815 | ### Example |
| 1816 | |
| 1817 | <div><fiddle-embed name="d4ca1f23809b6835c4ba46ea98a86900"> |
| 1818 | |
| 1819 | #### Example Output |
| 1820 | |
| 1821 | ~~~~ |
| 1822 | kNone_SkFilterQuality == paint.getFilterQuality() |
| 1823 | ~~~~ |
| 1824 | |
| 1825 | </fiddle-embed></div> |
| 1826 | |
| 1827 | --- |
| 1828 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1829 | <a name="SkPaint_setFilterQuality"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1830 | ## setFilterQuality |
| 1831 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1832 | <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] | 1833 | void setFilterQuality(SkFilterQuality quality) |
| 1834 | </pre> |
| 1835 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1836 | 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] | 1837 | draws faster; a higher setting looks better when the image is scaled. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1838 | 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] | 1839 | |
| 1840 | ### Parameters |
| 1841 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1842 | <table> <tr> <td><a name="SkPaint_setFilterQuality_quality"> <code><strong>quality </strong></code> </a></td> <td> |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1843 | one of: <a href="undocumented#SkFilterQuality">kNone SkFilterQuality</a>, <a href="undocumented#SkFilterQuality">kLow SkFilterQuality</a>, |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1844 | <a href="undocumented#SkFilterQuality">kMedium SkFilterQuality</a>, <a href="undocumented#SkFilterQuality">kHigh SkFilterQuality</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1845 | </tr> |
| 1846 | </table> |
| 1847 | |
| 1848 | ### Example |
| 1849 | |
| 1850 | <div><fiddle-embed name="e4288fabf24ee60b645e8bb6ea0afadf"> |
| 1851 | |
| 1852 | #### Example Output |
| 1853 | |
| 1854 | ~~~~ |
| 1855 | kHigh_SkFilterQuality == paint.getFilterQuality() |
| 1856 | ~~~~ |
| 1857 | |
| 1858 | </fiddle-embed></div> |
| 1859 | |
| 1860 | ### See Also |
| 1861 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1862 | <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] | 1863 | |
| 1864 | --- |
| 1865 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 1866 | ## <a name="Color_Methods"></a> Color Methods |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1867 | |
Cary Clark | ab2621d | 2018-01-30 10:08:57 -0500 | [diff] [blame] | 1868 | | name | description | |
| 1869 | | --- | --- | |
| 1870 | | <a href="#SkPaint_getColor">getColor</a> | returns <a href="#Alpha">Color Alpha</a> and <a href="#RGB">Color RGB</a>, one drawing color | |
| 1871 | | <a href="#SkPaint_setColor">setColor</a> | sets <a href="#Alpha">Color Alpha</a> and <a href="#RGB">Color RGB</a>, one drawing color | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1872 | |
Cary Clark | ab2621d | 2018-01-30 10:08:57 -0500 | [diff] [blame] | 1873 | <a href="undocumented#Color">Color</a> specifies the <a href="#RGB_Red">Color RGB Red</a>, <a href="#RGB_Blue">Color RGB Blue</a>, <a href="#RGB_Green">Color RGB Green</a>, and <a href="#Alpha">Color Alpha</a> |
| 1874 | values used to draw a filled or stroked shape in a 32-bit value. Each component |
| 1875 | occupies 8-bits, ranging from zero: no contribution; to 255: full intensity. |
| 1876 | All values in any combination are valid. |
| 1877 | |
| 1878 | <a href="undocumented#Color">Color</a> is not <a href="#Premultiply">Premultiplied</a>; <a href="#Alpha">Color Alpha</a> sets the transparency independent of |
| 1879 | <a href="#RGB">Color RGB</a>: <a href="#RGB_Red">Color RGB Red</a>, <a href="#RGB_Blue">Color RGB Blue</a>, and <a href="#RGB_Green">Color RGB Green</a>. |
| 1880 | |
| 1881 | The bit positions of <a href="#Alpha">Color Alpha</a> and <a href="#RGB">Color RGB</a> are independent of the bit |
| 1882 | positions on the output device, which may have more or fewer bits, and may have |
| 1883 | a different arrangement. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1884 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1885 | | bit positions | <a href="#Alpha">Color Alpha</a> | <a href="#RGB_Red">Color RGB Red</a> | <a href="#RGB_Blue">Color RGB Blue</a> | <a href="#RGB_Green">Color RGB Green</a> | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1886 | | --- | --- | --- | --- | --- | |
| 1887 | | | 31 - 24 | 23 - 16 | 15 - 8 | 7 - 0 | |
| 1888 | |
| 1889 | ### Example |
| 1890 | |
| 1891 | <div><fiddle-embed name="214b559d75c65a7bef6ef4be1f860053"></fiddle-embed></div> |
| 1892 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1893 | <a name="SkPaint_getColor"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1894 | ## getColor |
| 1895 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1896 | <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] | 1897 | SkColor getColor() const |
| 1898 | </pre> |
| 1899 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1900 | Retrieves <a href="#Alpha">Alpha</a> and <a href="#RGB">Color RGB</a>, <a href="#Unpremultiply">Unpremultiplied</a>, packed into 32 bits. |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1901 | 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] | 1902 | a color component. |
| 1903 | |
| 1904 | ### Return Value |
| 1905 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1906 | <a href="#Unpremultiply">Unpremultiplied</a> <a href="#ARGB">Color ARGB</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1907 | |
| 1908 | ### Example |
| 1909 | |
| 1910 | <div><fiddle-embed name="72d41f890203109a41f589a7403acae9"> |
| 1911 | |
| 1912 | #### Example Output |
| 1913 | |
| 1914 | ~~~~ |
| 1915 | Yellow is 100% red, 100% green, and 0% blue. |
| 1916 | ~~~~ |
| 1917 | |
| 1918 | </fiddle-embed></div> |
| 1919 | |
| 1920 | ### See Also |
| 1921 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 1922 | <a href="undocumented#SkColor">SkColor</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1923 | |
| 1924 | --- |
| 1925 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1926 | <a name="SkPaint_setColor"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1927 | ## setColor |
| 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 | void setColor(SkColor color) |
| 1931 | </pre> |
| 1932 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1933 | Sets <a href="#Alpha">Alpha</a> and <a href="#RGB">Color RGB</a> used when stroking and filling. The <a href="#SkPaint_setColor_color">color</a> is a 32-bit value, |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1934 | <a href="#Unpremultiply">Unpremultiplied</a>, packing 8-bit components for <a href="#Alpha">Alpha</a>, <a href="#Red">Red</a>, <a href="#Blue">Blue</a>, and <a href="#Green">Green</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1935 | |
| 1936 | ### Parameters |
| 1937 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1938 | <table> <tr> <td><a name="SkPaint_setColor_color"> <code><strong>color </strong></code> </a></td> <td> |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1939 | <a href="#Unpremultiply">Unpremultiplied</a> <a href="#ARGB">Color ARGB</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1940 | </tr> |
| 1941 | </table> |
| 1942 | |
| 1943 | ### Example |
| 1944 | |
| 1945 | <div><fiddle-embed name="6e70f18300bd676a3c056ceb6b62f8df"> |
| 1946 | |
| 1947 | #### Example Output |
| 1948 | |
| 1949 | ~~~~ |
| 1950 | green1 == green2 |
| 1951 | ~~~~ |
| 1952 | |
| 1953 | </fiddle-embed></div> |
| 1954 | |
| 1955 | ### See Also |
| 1956 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1957 | <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] | 1958 | |
| 1959 | --- |
| 1960 | |
| 1961 | ## <a name="Alpha_Methods"></a> Alpha Methods |
| 1962 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 1963 | <a href="#Alpha">Color Alpha</a> sets the transparency independent of <a href="#RGB">Color RGB</a>: <a href="#RGB_Red">Color RGB Red</a>, <a href="#RGB_Blue">Color RGB Blue</a>, and <a href="#RGB_Green">Color RGB Green</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1964 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1965 | <a name="SkPaint_getAlpha"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1966 | ## getAlpha |
| 1967 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1968 | <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] | 1969 | uint8_t getAlpha() const |
| 1970 | </pre> |
| 1971 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1972 | Retrieves <a href="#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] | 1973 | |
| 1974 | ### Return Value |
| 1975 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 1976 | <a href="#Alpha">Alpha</a> ranging from zero, fully transparent, to 255, fully opaque |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1977 | |
| 1978 | ### Example |
| 1979 | |
| 1980 | <div><fiddle-embed name="9a85bb62fe3d877b18fb7f952c4fa7f7"> |
| 1981 | |
| 1982 | #### Example Output |
| 1983 | |
| 1984 | ~~~~ |
| 1985 | 255 == paint.getAlpha() |
| 1986 | ~~~~ |
| 1987 | |
| 1988 | </fiddle-embed></div> |
| 1989 | |
| 1990 | --- |
| 1991 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 1992 | <a name="SkPaint_setAlpha"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 1993 | ## setAlpha |
| 1994 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 1995 | <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] | 1996 | void setAlpha(U8CPU a) |
| 1997 | </pre> |
| 1998 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 1999 | Replaces <a href="#Alpha">Alpha</a>, leaving <a href="#RGB">Color RGB</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2000 | unchanged. An out of range value triggers an assert in the debug |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2001 | build. <a href="#SkPaint_setAlpha_a">a</a> is <a href="#SkPaint_setAlpha_a">a</a> value from zero to 255. |
| 2002 | <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] | 2003 | fully opaque. |
| 2004 | |
| 2005 | ### Parameters |
| 2006 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2007 | <table> <tr> <td><a name="SkPaint_setAlpha_a"> <code><strong>a </strong></code> </a></td> <td> |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 2008 | <a href="#Alpha">Alpha</a> component of <a href="undocumented#Color">Color</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2009 | </tr> |
| 2010 | </table> |
| 2011 | |
| 2012 | ### Example |
| 2013 | |
| 2014 | <div><fiddle-embed name="6ddc0360512dfb9947e75c17e6a8103d"> |
| 2015 | |
| 2016 | #### Example Output |
| 2017 | |
| 2018 | ~~~~ |
| 2019 | 0x44112233 == paint.getColor() |
| 2020 | ~~~~ |
| 2021 | |
| 2022 | </fiddle-embed></div> |
| 2023 | |
| 2024 | --- |
| 2025 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2026 | <a name="SkPaint_setARGB"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2027 | ## setARGB |
| 2028 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2029 | <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] | 2030 | void setARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b) |
| 2031 | </pre> |
| 2032 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2033 | Sets <a href="undocumented#Color">Color</a> used when drawing solid fills. The color components range from 0 to 255. |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 2034 | The color is <a href="#Unpremultiply">Unpremultiplied</a>; <a href="#Alpha">Alpha</a> sets the transparency independent of <a href="#RGB">Color RGB</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2035 | |
| 2036 | ### Parameters |
| 2037 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2038 | <table> <tr> <td><a name="SkPaint_setARGB_a"> <code><strong>a </strong></code> </a></td> <td> |
| 2039 | amount of <a href="#Alpha">Color Alpha</a>, from fully transparent (0) to fully opaque (255)</td> |
| 2040 | </tr> <tr> <td><a name="SkPaint_setARGB_r"> <code><strong>r </strong></code> </a></td> <td> |
| 2041 | amount of <a href="#RGB_Red">Color RGB Red</a>, from no red (0) to full red (255)</td> |
| 2042 | </tr> <tr> <td><a name="SkPaint_setARGB_g"> <code><strong>g </strong></code> </a></td> <td> |
| 2043 | amount of <a href="#RGB_Green">Color RGB Green</a>, from no green (0) to full green (255)</td> |
| 2044 | </tr> <tr> <td><a name="SkPaint_setARGB_b"> <code><strong>b </strong></code> </a></td> <td> |
| 2045 | amount of <a href="#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] | 2046 | </tr> |
| 2047 | </table> |
| 2048 | |
| 2049 | ### Example |
| 2050 | |
| 2051 | <div><fiddle-embed name="cb62e4755789ed32f7120dc55984959d"> |
| 2052 | |
| 2053 | #### Example Output |
| 2054 | |
| 2055 | ~~~~ |
| 2056 | transRed1 == transRed2 |
| 2057 | ~~~~ |
| 2058 | |
| 2059 | </fiddle-embed></div> |
| 2060 | |
| 2061 | ### See Also |
| 2062 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2063 | <a href="#SkPaint_setColor">setColor</a> <a href="undocumented#SkColorSetARGB">SkColorSetARGB</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2064 | |
| 2065 | --- |
| 2066 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2067 | ## <a name="Style"></a> Style |
| 2068 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2069 | <a href="#Style">Style</a> specifies if the geometry is filled, stroked, or both filled and stroked. |
| 2070 | 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] | 2071 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2072 | 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] | 2073 | The fill covers the area inside the geometry for most shapes. |
| 2074 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2075 | 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] | 2076 | |
| 2077 | ## <a name="Fill"></a> Fill |
| 2078 | |
| 2079 | ### See Also |
| 2080 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2081 | <a href="#Fill_Type">Path Fill Type</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2082 | |
| 2083 | ## <a name="Stroke"></a> Stroke |
| 2084 | |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 2085 | 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] | 2086 | <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>. |
| 2087 | 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] | 2088 | 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] | 2089 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2090 | 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 |
| 2091 | may have gaps, and if <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a> is set, <a href="#Alpha">Color Alpha</a> will increase to visually decrease coverage. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2092 | |
| 2093 | ## <a name="Hairline"></a> Hairline |
| 2094 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2095 | <a href="#Stroke_Width">Stroke Width</a> of zero has a special meaning and switches drawing to use <a href="#Hairline">Hairline</a>. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2096 | <a href="#Hairline">Hairline</a> draws the thinnest continuous frame. If <a href="#SkPaint_kAntiAlias_Flag">kAntiAlias Flag</a> is clear, adjacent pixels |
| 2097 | flow horizontally, vertically,or diagonally. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2098 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2099 | <a href="SkPath_Reference#Path">Path</a> drawing with <a href="#Hairline">Hairline</a> may hit the same pixel more than once. For instance, <a href="SkPath_Reference#Path">Path</a> containing |
| 2100 | two lines in one <a href="#Contour">Path Contour</a> will draw the corner point once, but may both lines may draw the adjacent |
| 2101 | 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] | 2102 | 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] | 2103 | while stroking. |
| 2104 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2105 | ## <a name="SkPaint_Style"></a> Enum SkPaint::Style |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2106 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2107 | <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] | 2108 | enum <a href="#SkPaint_Style">Style</a> { |
| 2109 | <a href="#SkPaint_kFill_Style">kFill Style</a>, |
| 2110 | <a href="#SkPaint_kStroke_Style">kStroke Style</a>, |
| 2111 | <a href="#SkPaint_kStrokeAndFill_Style">kStrokeAndFill Style</a>, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2112 | };</pre> |
| 2113 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2114 | 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] | 2115 | The stroke and fill |
| 2116 | share all paint attributes; for instance, they are drawn with the same color. |
| 2117 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2118 | 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] | 2119 | a fill draw. |
| 2120 | |
| 2121 | ### Constants |
| 2122 | |
| 2123 | <table> |
| 2124 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2125 | <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 | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2126 | 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="#Circle">Circles</a>, <a href="#Oval">Ovals</a>, <a href="SkPath_Reference#Path">Path</a>, and <a href="undocumented#Text">Text</a>. |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2127 | <a href="SkBitmap_Reference#Bitmap">Bitmap</a>, <a href="SkImage_Reference#Image">Image</a>, <a href="#Patch">Patches</a>, <a href="undocumented#Region">Region</a>, <a href="#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] | 2128 | <a href="#SkPaint_kFill_Style">kFill Style</a> is set, and ignore the set <a href="#SkPaint_Style">Style</a>. |
| 2129 | The <a href="#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] | 2130 | and to create an unfilled hole inside the shape. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2131 | <a href="#SkPaint_Style">Style</a> is set to <a href="#SkPaint_kFill_Style">kFill Style</a> by default.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2132 | </tr> |
| 2133 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2134 | <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 | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2135 | 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="#Arc">Arcs</a>, <a href="#Circle">Circles</a>, <a href="#Oval">Ovals</a>, <a href="SkPath_Reference#Path">Path</a>, and <a href="undocumented#Text">Text</a>. |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 2136 | <a href="#Arc">Arcs</a>, <a href="#Line">Lines</a>, and <a href="#Point">Points</a>, 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] | 2137 | and ignore the set <a href="#SkPaint_Style">Style</a>. |
| 2138 | The stroke construction is unaffected by the <a href="#Fill_Type">Path Fill Type</a>.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2139 | </tr> |
| 2140 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2141 | <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 | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 2142 | 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="#Circle">Circles</a>, <a href="#Oval">Ovals</a>, <a href="SkPath_Reference#Path">Path</a>, and <a href="undocumented#Text">Text</a>. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2143 | <a href="SkPath_Reference#Path">Path</a> is treated as if it is set to <a href="#SkPath_kWinding_FillType">SkPath::kWinding FillType</a>, |
| 2144 | and the set <a href="#Fill_Type">Path Fill Type</a> is ignored.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2145 | </tr> |
| 2146 | |
| 2147 | </table> |
| 2148 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2149 | ## <a name="SkPaint__anonymous"></a> Enum SkPaint::_anonymous |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2150 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2151 | <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] | 2152 | enum { |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2153 | <a href="#SkPaint_kStyleCount">kStyleCount</a> = <a href="#SkPaint_kStrokeAndFill_Style">kStrokeAndFill Style</a> + 1, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2154 | };</pre> |
| 2155 | |
| 2156 | ### Constants |
| 2157 | |
| 2158 | <table> |
| 2159 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2160 | <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. |
| 2161 | May be used to verify that <a href="#SkPaint_Style">Style</a> is a legal value.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2162 | </tr> |
| 2163 | |
| 2164 | </table> |
| 2165 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2166 | <a name="SkPaint_getStyle"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2167 | ## getStyle |
| 2168 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2169 | <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] | 2170 | Style getStyle() const |
| 2171 | </pre> |
| 2172 | |
| 2173 | Whether the geometry is filled, stroked, or filled and stroked. |
| 2174 | |
| 2175 | ### Return Value |
| 2176 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 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> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2178 | |
| 2179 | ### Example |
| 2180 | |
| 2181 | <div><fiddle-embed name="1c5e18c3c0102d2dac86a78ba8c8ce01"> |
| 2182 | |
| 2183 | #### Example Output |
| 2184 | |
| 2185 | ~~~~ |
| 2186 | SkPaint::kFill_Style == paint.getStyle() |
| 2187 | ~~~~ |
| 2188 | |
| 2189 | </fiddle-embed></div> |
| 2190 | |
| 2191 | ### See Also |
| 2192 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2193 | <a href="#SkPaint_Style">Style</a> <a href="#SkPaint_setStyle">setStyle</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2194 | |
| 2195 | --- |
| 2196 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2197 | <a name="SkPaint_setStyle"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2198 | ## setStyle |
| 2199 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2200 | <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] | 2201 | void setStyle(Style style) |
| 2202 | </pre> |
| 2203 | |
| 2204 | Sets whether the geometry is filled, stroked, or filled and stroked. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2205 | 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] | 2206 | |
| 2207 | ### Parameters |
| 2208 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2209 | <table> <tr> <td><a name="SkPaint_setStyle_style"> <code><strong>style </strong></code> </a></td> <td> |
| 2210 | 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] | 2211 | </tr> |
| 2212 | </table> |
| 2213 | |
| 2214 | ### Example |
| 2215 | |
| 2216 | <div><fiddle-embed name="c7bb6248e4735b8d1a32d02fba40d344"></fiddle-embed></div> |
| 2217 | |
| 2218 | ### See Also |
| 2219 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2220 | <a href="#SkPaint_Style">Style</a> <a href="#SkPaint_getStyle">getStyle</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2221 | |
| 2222 | --- |
| 2223 | |
| 2224 | ### See Also |
| 2225 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2226 | <a href="#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] | 2227 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2228 | ## <a name="Stroke_Width"></a> Stroke Width |
| 2229 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2230 | <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] | 2231 | 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] | 2232 | 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] | 2233 | |
| 2234 | When width is greater than zero, the stroke encompasses as many pixels partially |
| 2235 | 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] | 2236 | the stroke is always one pixel wide. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2237 | |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 2238 | The stroke dimensions are scaled by the canvas matrix, but <a href="#Hairline">Hairline</a> stroke |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2239 | remains one pixel wide regardless of scaling. |
| 2240 | |
| 2241 | The default width for the paint is zero. |
| 2242 | |
| 2243 | ### Example |
| 2244 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2245 | <div><fiddle-embed name="01e3e08a3022a351628ff54e84887756" gpu="true"><div>The pixels hit to represent thin lines vary with the angle of the |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 2246 | line and the platform implementation.</div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2247 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2248 | <a name="SkPaint_getStrokeWidth"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2249 | ## getStrokeWidth |
| 2250 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2251 | <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] | 2252 | SkScalar getStrokeWidth() const |
| 2253 | </pre> |
| 2254 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2255 | 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] | 2256 | outline the shape. |
| 2257 | |
| 2258 | ### Return Value |
| 2259 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2260 | zero for <a href="#Hairline">Hairline</a>, greater than zero for pen thickness |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2261 | |
| 2262 | ### Example |
| 2263 | |
| 2264 | <div><fiddle-embed name="99aa73f64df8bbf06e656cd891a81b9e"> |
| 2265 | |
| 2266 | #### Example Output |
| 2267 | |
| 2268 | ~~~~ |
| 2269 | 0 == paint.getStrokeWidth() |
| 2270 | ~~~~ |
| 2271 | |
| 2272 | </fiddle-embed></div> |
| 2273 | |
| 2274 | --- |
| 2275 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2276 | <a name="SkPaint_setStrokeWidth"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2277 | ## setStrokeWidth |
| 2278 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2279 | <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] | 2280 | void setStrokeWidth(SkScalar width) |
| 2281 | </pre> |
| 2282 | |
| 2283 | Sets the thickness of the pen used by the paint to |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2284 | outline the shape. |
| 2285 | 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] | 2286 | |
| 2287 | ### Parameters |
| 2288 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2289 | <table> <tr> <td><a name="SkPaint_setStrokeWidth_width"> <code><strong>width </strong></code> </a></td> <td> |
| 2290 | zero thickness for <a href="#Hairline">Hairline</a>; greater than zero for pen thickness</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2291 | </tr> |
| 2292 | </table> |
| 2293 | |
| 2294 | ### Example |
| 2295 | |
| 2296 | <div><fiddle-embed name="0c4446c0870b5c7b5a2efe77ff92afb8"> |
| 2297 | |
| 2298 | #### Example Output |
| 2299 | |
| 2300 | ~~~~ |
| 2301 | 5 == paint.getStrokeWidth() |
| 2302 | ~~~~ |
| 2303 | |
| 2304 | </fiddle-embed></div> |
| 2305 | |
| 2306 | --- |
| 2307 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2308 | ## <a name="Miter_Limit"></a> Miter Limit |
| 2309 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2310 | <a href="#Miter_Limit">Miter Limit</a> specifies the maximum miter length, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2311 | relative to the stroke width. |
| 2312 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2313 | <a href="#Miter_Limit">Miter Limit</a> is used when the <a href="#Stroke_Join">Stroke Join</a> |
| 2314 | 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> |
| 2315 | or <a href="#SkPaint_kStrokeAndFill_Style">kStrokeAndFill Style</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2316 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2317 | If the miter at a corner exceeds this limit, <a href="#SkPaint_kMiter_Join">kMiter Join</a> |
| 2318 | is replaced with <a href="#SkPaint_kBevel_Join">kBevel Join</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2319 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2320 | <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] | 2321 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2322 | 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] | 2323 | 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] | 2324 | in "SkUserConfig.h" or as a define supplied by the build environment. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2325 | |
| 2326 | Here are some miter limits and the angles that triggers them. |
| 2327 | |
| 2328 | | miter limit | angle in degrees | |
| 2329 | | --- | --- | |
| 2330 | | 10 | 11.48 | |
| 2331 | | 9 | 12.76 | |
| 2332 | | 8 | 14.36 | |
| 2333 | | 7 | 16.43 | |
| 2334 | | 6 | 19.19 | |
| 2335 | | 5 | 23.07 | |
| 2336 | | 4 | 28.96 | |
| 2337 | | 3 | 38.94 | |
| 2338 | | 2 | 60 | |
| 2339 | | 1 | 180 | |
| 2340 | |
| 2341 | ### Example |
| 2342 | |
| 2343 | <div><fiddle-embed name="5de2de0f00354e59074a9bb1a42d5a63"><div>This example draws a stroked corner and the miter length beneath. |
| 2344 | When the miter limit is decreased slightly, the miter join is replaced |
| 2345 | by a bevel join.</div></fiddle-embed></div> |
| 2346 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2347 | <a name="SkPaint_getStrokeMiter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2348 | ## getStrokeMiter |
| 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 | SkScalar getStrokeMiter() const |
| 2352 | </pre> |
| 2353 | |
| 2354 | The limit at which a sharp corner is drawn beveled. |
| 2355 | |
| 2356 | ### Return Value |
| 2357 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2358 | zero and greater <a href="#Miter_Limit">Miter Limit</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2359 | |
| 2360 | ### Example |
| 2361 | |
| 2362 | <div><fiddle-embed name="50da74a43b725f07a914df588c867d36"> |
| 2363 | |
| 2364 | #### Example Output |
| 2365 | |
| 2366 | ~~~~ |
| 2367 | default miter limit == 4 |
| 2368 | ~~~~ |
| 2369 | |
| 2370 | </fiddle-embed></div> |
| 2371 | |
| 2372 | ### See Also |
| 2373 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2374 | <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] | 2375 | |
| 2376 | --- |
| 2377 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2378 | <a name="SkPaint_setStrokeMiter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2379 | ## setStrokeMiter |
| 2380 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2381 | <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] | 2382 | void setStrokeMiter(SkScalar miter) |
| 2383 | </pre> |
| 2384 | |
| 2385 | The limit at which a sharp corner is drawn beveled. |
| 2386 | Valid values are zero and greater. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2387 | 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] | 2388 | |
| 2389 | ### Parameters |
| 2390 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2391 | <table> <tr> <td><a name="SkPaint_setStrokeMiter_miter"> <code><strong>miter </strong></code> </a></td> <td> |
| 2392 | zero and greater <a href="#Miter_Limit">Miter Limit</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2393 | </tr> |
| 2394 | </table> |
| 2395 | |
| 2396 | ### Example |
| 2397 | |
| 2398 | <div><fiddle-embed name="700b284dbc97785c6a9c9636088713ad"> |
| 2399 | |
| 2400 | #### Example Output |
| 2401 | |
| 2402 | ~~~~ |
| 2403 | default miter limit == 8 |
| 2404 | ~~~~ |
| 2405 | |
| 2406 | </fiddle-embed></div> |
| 2407 | |
| 2408 | ### See Also |
| 2409 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2410 | <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] | 2411 | |
| 2412 | --- |
| 2413 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2414 | ## <a name="Stroke_Cap"></a> Stroke Cap |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2415 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2416 | ## <a name="SkPaint_Cap"></a> Enum SkPaint::Cap |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2417 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2418 | <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] | 2419 | enum <a href="#SkPaint_Cap">Cap</a> { |
| 2420 | <a href="#SkPaint_kButt_Cap">kButt Cap</a>, |
| 2421 | <a href="#SkPaint_kRound_Cap">kRound Cap</a>, |
| 2422 | <a href="#SkPaint_kSquare_Cap">kSquare Cap</a>, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2423 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2424 | <a href="#SkPaint_kLast_Cap">kLast Cap</a> = <a href="#SkPaint_kSquare_Cap">kSquare Cap</a>, |
| 2425 | <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] | 2426 | }; |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 2427 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2428 | static constexpr int <a href="#SkPaint_kCapCount">kCapCount</a> = <a href="#SkPaint_kLast_Cap">kLast Cap</a> + 1;</pre> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2429 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2430 | <a href="#Stroke_Cap">Stroke Cap</a> draws at the beginning and end of an open <a href="#Contour">Path Contour</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2431 | |
| 2432 | ### Constants |
| 2433 | |
| 2434 | <table> |
| 2435 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2436 | <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.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2437 | </tr> |
| 2438 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2439 | <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 | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2440 | and end.</td> |
| 2441 | </tr> |
| 2442 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2443 | <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] | 2444 | and end. The square sides are parallel to the initial and final direction |
| 2445 | of the stroke.</td> |
| 2446 | </tr> |
| 2447 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2448 | <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>.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2449 | </tr> |
| 2450 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2451 | <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>. |
| 2452 | <a href="#Stroke_Cap">Stroke Cap</a> is set to <a href="#SkPaint_kButt_Cap">kButt Cap</a> by default.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2453 | </tr> |
| 2454 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2455 | <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. |
| 2456 | May be used to verify that <a href="#Stroke_Cap">Stroke Cap</a> is a legal value.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2457 | </tr> |
| 2458 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2459 | Stroke describes the area covered by a pen of <a href="#Stroke_Width">Stroke Width</a> as it |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 2460 | follows the <a href="#Contour">Path Contour</a>, moving parallel to the contour direction. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2461 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2462 | If the <a href="#Contour">Path Contour</a> is not terminated by <a href="#SkPath_kClose_Verb">SkPath::kClose Verb</a>, the contour has a |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2463 | visible beginning and end. |
| 2464 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2465 | <a href="#Contour">Path Contour</a> may start and end at the same point; defining <a href="SkPath_Reference#Zero_Length">Zero Length Contour</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2466 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2467 | <a href="#SkPaint_kButt_Cap">kButt Cap</a> and <a href="SkPath_Reference#Zero_Length">Zero Length Contour</a> is not drawn. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2468 | <a href="#SkPaint_kRound_Cap">kRound Cap</a> and <a href="SkPath_Reference#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] | 2469 | at the contour point. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2470 | <a href="#SkPaint_kSquare_Cap">kSquare Cap</a> and <a href="SkPath_Reference#Zero_Length">Zero Length Contour</a> draws an upright square with a side of |
| 2471 | <a href="#Stroke_Width">Stroke Width</a> at the contour point. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2472 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2473 | <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] | 2474 | |
| 2475 | </table> |
| 2476 | |
| 2477 | ### Example |
| 2478 | |
Cary Clark | 2ade997 | 2017-11-02 17:49:34 -0400 | [diff] [blame] | 2479 | <div><fiddle-embed name="2bffb6384cc20077e632e7d01da045ca"></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2480 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2481 | <a name="SkPaint_getStrokeCap"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2482 | ## getStrokeCap |
| 2483 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2484 | <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] | 2485 | Cap getStrokeCap() const |
| 2486 | </pre> |
| 2487 | |
| 2488 | The geometry drawn at the beginning and end of strokes. |
| 2489 | |
| 2490 | ### Return Value |
| 2491 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2492 | 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] | 2493 | |
| 2494 | ### Example |
| 2495 | |
| 2496 | <div><fiddle-embed name="aabf9baee8e026fae36fca30e955512b"> |
| 2497 | |
| 2498 | #### Example Output |
| 2499 | |
| 2500 | ~~~~ |
| 2501 | kButt_Cap == default stroke cap |
| 2502 | ~~~~ |
| 2503 | |
| 2504 | </fiddle-embed></div> |
| 2505 | |
| 2506 | ### See Also |
| 2507 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2508 | <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] | 2509 | |
| 2510 | --- |
| 2511 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2512 | <a name="SkPaint_setStrokeCap"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2513 | ## setStrokeCap |
| 2514 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2515 | <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] | 2516 | void setStrokeCap(Cap cap) |
| 2517 | </pre> |
| 2518 | |
| 2519 | The geometry drawn at the beginning and end of strokes. |
| 2520 | |
| 2521 | ### Parameters |
| 2522 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2523 | <table> <tr> <td><a name="SkPaint_setStrokeCap_cap"> <code><strong>cap </strong></code> </a></td> <td> |
| 2524 | 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>; |
| 2525 | 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] | 2526 | </tr> |
| 2527 | </table> |
| 2528 | |
| 2529 | ### Example |
| 2530 | |
| 2531 | <div><fiddle-embed name="de83fbd848a4625345b4b87a6e55d98a"> |
| 2532 | |
| 2533 | #### Example Output |
| 2534 | |
| 2535 | ~~~~ |
| 2536 | kRound_Cap == paint.getStrokeCap() |
| 2537 | ~~~~ |
| 2538 | |
| 2539 | </fiddle-embed></div> |
| 2540 | |
| 2541 | ### See Also |
| 2542 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2543 | <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] | 2544 | |
| 2545 | --- |
| 2546 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2547 | ## <a name="Stroke_Join"></a> Stroke Join |
| 2548 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2549 | <a href="#Stroke_Join">Stroke Join</a> draws at the sharp corners of an open or closed <a href="#Contour">Path Contour</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2550 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2551 | Stroke describes the area covered by a pen of <a href="#Stroke_Width">Stroke Width</a> as it |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 2552 | follows the <a href="#Contour">Path Contour</a>, moving parallel to the contour direction. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2553 | |
| 2554 | If the contour direction changes abruptly, because the tangent direction leading |
| 2555 | 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] | 2556 | 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] | 2557 | |
| 2558 | ### Example |
| 2559 | |
Cary Clark | 2ade997 | 2017-11-02 17:49:34 -0400 | [diff] [blame] | 2560 | <div><fiddle-embed name="917c44b504d3f9308571fd3835d90a0d"></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2561 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2562 | ## <a name="SkPaint_Join"></a> Enum SkPaint::Join |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2563 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2564 | <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] | 2565 | enum <a href="#SkPaint_Join">Join</a> { |
| 2566 | <a href="#SkPaint_kMiter_Join">kMiter Join</a>, |
| 2567 | <a href="#SkPaint_kRound_Join">kRound Join</a>, |
| 2568 | <a href="#SkPaint_kBevel_Join">kBevel Join</a>, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2569 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2570 | <a href="#SkPaint_kLast_Join">kLast Join</a> = <a href="#SkPaint_kBevel_Join">kBevel Join</a>, |
| 2571 | <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] | 2572 | }; |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 2573 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2574 | static constexpr int <a href="#SkPaint_kJoinCount">kJoinCount</a> = <a href="#SkPaint_kLast_Join">kLast Join</a> + 1;</pre> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2575 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2576 | <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] | 2577 | affects the four corners of a stroked rectangle, and the connected segments in a |
| 2578 | stroked path. |
| 2579 | |
| 2580 | Choose miter join to draw sharp corners. Choose round join to draw a circle with a |
| 2581 | radius equal to the stroke width on top of the corner. Choose bevel join to minimally |
| 2582 | connect the thick strokes. |
| 2583 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2584 | 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] | 2585 | not contain the actual join. For instance, a fill path constructed with round joins does |
| 2586 | not necessarily include circles at each connected segment. |
| 2587 | |
| 2588 | ### Constants |
| 2589 | |
| 2590 | <table> |
| 2591 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2592 | <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>. |
| 2593 | If the extension exceeds <a href="#Miter_Limit">Miter Limit</a>, <a href="#SkPaint_kBevel_Join">kBevel Join</a> is used instead.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2594 | </tr> |
| 2595 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2596 | <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.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2597 | </tr> |
| 2598 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2599 | <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.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2600 | </tr> |
| 2601 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2602 | <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>.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2603 | </tr> |
| 2604 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2605 | <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>. |
| 2606 | <a href="#Stroke_Join">Stroke Join</a> is set to <a href="#SkPaint_kMiter_Join">kMiter Join</a> by default.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2607 | </tr> |
| 2608 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2609 | <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. |
| 2610 | May be used to verify that <a href="#Stroke_Join">Stroke Join</a> is a legal value.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2611 | </tr> |
| 2612 | </table> |
| 2613 | |
| 2614 | ### Example |
| 2615 | |
| 2616 | <div><fiddle-embed name="3b1aebacc21c1836a52876b9b0b3905e"></fiddle-embed></div> |
| 2617 | |
| 2618 | ### See Also |
| 2619 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2620 | <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] | 2621 | |
| 2622 | |
| 2623 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2624 | <a name="SkPaint_getStrokeJoin"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2625 | ## getStrokeJoin |
| 2626 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2627 | <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] | 2628 | Join getStrokeJoin() const |
| 2629 | </pre> |
| 2630 | |
Cary Clark | 0c5f546 | 2017-12-15 11:21:51 -0500 | [diff] [blame] | 2631 | The geometry drawn at the corners of strokes. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2632 | |
| 2633 | ### Return Value |
| 2634 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2635 | 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] | 2636 | |
| 2637 | ### Example |
| 2638 | |
| 2639 | <div><fiddle-embed name="31bf751d0a8ddf176b871810820d8199"> |
| 2640 | |
| 2641 | #### Example Output |
| 2642 | |
| 2643 | ~~~~ |
| 2644 | kMiter_Join == default stroke join |
| 2645 | ~~~~ |
| 2646 | |
| 2647 | </fiddle-embed></div> |
| 2648 | |
| 2649 | ### See Also |
| 2650 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2651 | <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] | 2652 | |
| 2653 | --- |
| 2654 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2655 | <a name="SkPaint_setStrokeJoin"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2656 | ## setStrokeJoin |
| 2657 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2658 | <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] | 2659 | void setStrokeJoin(Join join) |
| 2660 | </pre> |
| 2661 | |
Cary Clark | 0c5f546 | 2017-12-15 11:21:51 -0500 | [diff] [blame] | 2662 | The geometry drawn at the corners of strokes. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2663 | |
| 2664 | ### Parameters |
| 2665 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2666 | <table> <tr> <td><a name="SkPaint_setStrokeJoin_join"> <code><strong>join </strong></code> </a></td> <td> |
| 2667 | 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] | 2668 | otherwise, has no effect</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2669 | </tr> |
| 2670 | </table> |
| 2671 | |
| 2672 | ### Example |
| 2673 | |
| 2674 | <div><fiddle-embed name="48d963ad4286eddf680f9c511eb6da91"> |
| 2675 | |
| 2676 | #### Example Output |
| 2677 | |
| 2678 | ~~~~ |
| 2679 | kMiter_Join == paint.getStrokeJoin() |
| 2680 | ~~~~ |
| 2681 | |
| 2682 | </fiddle-embed></div> |
| 2683 | |
| 2684 | ### See Also |
| 2685 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2686 | <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] | 2687 | |
| 2688 | --- |
| 2689 | |
| 2690 | ### See Also |
| 2691 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2692 | <a href="#Miter_Limit">Miter Limit</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2693 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2694 | ## <a name="Fill_Path"></a> Fill Path |
| 2695 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2696 | <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] | 2697 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2698 | 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] | 2699 | replaces the destination <a href="SkPath_Reference#Path">Path</a>. Otherwise, the source <a href="SkPath_Reference#Path">Path</a> is replaces the |
| 2700 | destination <a href="SkPath_Reference#Path">Path</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2701 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2702 | 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 |
| 2703 | 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] | 2704 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2705 | 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] | 2706 | 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>, |
| 2707 | 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] | 2708 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2709 | 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] | 2710 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2711 | 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> |
| 2712 | returns false since <a href="#Hairline">Hairline</a> has no filled equivalent. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2713 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2714 | <a name="SkPaint_getFillPath"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2715 | ## getFillPath |
| 2716 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2717 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
| 2718 | 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] | 2719 | </pre> |
| 2720 | |
| 2721 | The filled equivalent of the stroked path. |
| 2722 | |
| 2723 | ### Parameters |
| 2724 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2725 | <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] | 2726 | <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] | 2727 | </tr> <tr> <td><a name="SkPaint_getFillPath_dst"> <code><strong>dst </strong></code> </a></td> <td> |
| 2728 | 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> |
| 2729 | </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] | 2730 | 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] | 2731 | </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] | 2732 | if > 1, increase precision, else if (0 < res < 1) reduce precision |
| 2733 | to favor speed and size</td> |
| 2734 | </tr> |
| 2735 | </table> |
| 2736 | |
| 2737 | ### Return Value |
| 2738 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2739 | true if the path represents <a href="#Style_Fill">Style Fill</a>, or false if it represents <a href="#Hairline">Hairline</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2740 | |
| 2741 | ### Example |
| 2742 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 2743 | <div><fiddle-embed name="cedd6233848198e1fca4d1e14816baaf"><div>A very small <a href="#Quad">Quad</a> stroke is turned into a filled path with increasing levels of precision. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 2744 | At the lowest precision, the <a href="#Quad">Quad</a> stroke is approximated by a rectangle. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2745 | At the highest precision, the filled path has high fidelity compared to the original stroke.</div></fiddle-embed></div> |
| 2746 | |
| 2747 | --- |
| 2748 | |
Cary Clark | 2dc84ad | 2018-01-26 12:56:22 -0500 | [diff] [blame] | 2749 | <a name="SkPaint_getFillPath_2"></a> |
| 2750 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2751 | <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] | 2752 | bool getFillPath(const SkPath& src, SkPath* dst) const |
| 2753 | </pre> |
| 2754 | |
| 2755 | The filled equivalent of the stroked path. |
| 2756 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2757 | 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>. |
| 2758 | <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] | 2759 | |
| 2760 | ### Parameters |
| 2761 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2762 | <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] | 2763 | <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] | 2764 | </tr> <tr> <td><a name="SkPaint_getFillPath_2_dst"> <code><strong>dst </strong></code> </a></td> <td> |
| 2765 | 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] | 2766 | </tr> |
| 2767 | </table> |
| 2768 | |
| 2769 | ### Return Value |
| 2770 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2771 | true if the path represents <a href="#Style_Fill">Style Fill</a>, or false if it represents <a href="#Hairline">Hairline</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2772 | |
| 2773 | ### Example |
| 2774 | |
| 2775 | <div><fiddle-embed name="e6d8ca0cc17e0b475bd54dd995825468"></fiddle-embed></div> |
| 2776 | |
| 2777 | --- |
| 2778 | |
| 2779 | ### See Also |
| 2780 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2781 | <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] | 2782 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2783 | ## <a name="Shader_Methods"></a> Shader Methods |
| 2784 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2785 | <a href="undocumented#Shader">Shader</a> defines the colors used when drawing a shape. |
| 2786 | <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] | 2787 | 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] | 2788 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2789 | <a href="undocumented#Shader">Shader</a> is modulated by <a href="#Alpha">Color Alpha</a> component of <a href="undocumented#Color">Color</a>. |
| 2790 | If <a href="undocumented#Shader">Shader</a> object defines only <a href="#Alpha">Color Alpha</a>, then <a href="undocumented#Color">Color</a> modulated by <a href="#Alpha">Color Alpha</a> describes |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2791 | the fill. |
| 2792 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2793 | The drawn transparency can be modified without altering <a href="undocumented#Shader">Shader</a>, by changing <a href="#Alpha">Color Alpha</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2794 | |
| 2795 | ### Example |
| 2796 | |
| 2797 | <div><fiddle-embed name="c015dc2010c15e1c00b4f7330232b0f7"></fiddle-embed></div> |
| 2798 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2799 | If <a href="undocumented#Shader">Shader</a> generates only <a href="#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] | 2800 | |
| 2801 | ### Example |
| 2802 | |
| 2803 | <div><fiddle-embed name="9673be7720ba3adcdae42ddc1565b588"></fiddle-embed></div> |
| 2804 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2805 | <a name="SkPaint_getShader"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2806 | ## getShader |
| 2807 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2808 | <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] | 2809 | SkShader* getShader() const |
| 2810 | </pre> |
| 2811 | |
| 2812 | Optional colors used when filling a path, such as a gradient. |
| 2813 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2814 | 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] | 2815 | |
| 2816 | ### Return Value |
| 2817 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2818 | <a href="undocumented#Shader">Shader</a> if previously set, nullptr otherwise |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2819 | |
| 2820 | ### Example |
| 2821 | |
| 2822 | <div><fiddle-embed name="09f15b9fd88882850da2d235eb86292f"> |
| 2823 | |
| 2824 | #### Example Output |
| 2825 | |
| 2826 | ~~~~ |
| 2827 | nullptr == shader |
| 2828 | nullptr != shader |
| 2829 | ~~~~ |
| 2830 | |
| 2831 | </fiddle-embed></div> |
| 2832 | |
| 2833 | --- |
| 2834 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2835 | <a name="SkPaint_refShader"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2836 | ## refShader |
| 2837 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2838 | <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] | 2839 | sk_sp<SkShader> refShader() const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2840 | </pre> |
| 2841 | |
| 2842 | Optional colors used when filling a path, such as a gradient. |
| 2843 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2844 | 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] | 2845 | |
| 2846 | ### Return Value |
| 2847 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2848 | <a href="undocumented#Shader">Shader</a> if previously set, nullptr otherwise |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2849 | |
| 2850 | ### Example |
| 2851 | |
| 2852 | <div><fiddle-embed name="53da0295972a418cbc9607bbb17feaa8"> |
| 2853 | |
| 2854 | #### Example Output |
| 2855 | |
| 2856 | ~~~~ |
| 2857 | shader unique: true |
| 2858 | shader unique: false |
| 2859 | ~~~~ |
| 2860 | |
| 2861 | </fiddle-embed></div> |
| 2862 | |
| 2863 | --- |
| 2864 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2865 | <a name="SkPaint_setShader"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2866 | ## setShader |
| 2867 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2868 | <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] | 2869 | void setShader(sk_sp<SkShader> shader) |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2870 | </pre> |
| 2871 | |
| 2872 | Optional colors used when filling a path, such as a gradient. |
| 2873 | |
Cary Clark | d0530ba | 2017-09-14 11:25:39 -0400 | [diff] [blame] | 2874 | 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] | 2875 | 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] | 2876 | |
| 2877 | ### Parameters |
| 2878 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2879 | <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] | 2880 | 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] | 2881 | </tr> |
| 2882 | </table> |
| 2883 | |
| 2884 | ### Example |
| 2885 | |
| 2886 | <div><fiddle-embed name="77e64d5bae9b1ba037fd99252bb4aa58"></fiddle-embed></div> |
| 2887 | |
| 2888 | --- |
| 2889 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2890 | ## <a name="Color_Filter_Methods"></a> Color Filter Methods |
| 2891 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2892 | <a href="undocumented#Color_Filter">Color Filter</a> alters the color used when drawing a shape. |
| 2893 | <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] | 2894 | 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] | 2895 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2896 | The drawn transparency can be modified without altering <a href="undocumented#Color_Filter">Color Filter</a>, by changing <a href="#Alpha">Color Alpha</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2897 | |
| 2898 | ### Example |
| 2899 | |
| 2900 | <div><fiddle-embed name="5abde56ca2f89a18b8e231abd1b57c56"></fiddle-embed></div> |
| 2901 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2902 | <a name="SkPaint_getColorFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2903 | ## getColorFilter |
| 2904 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2905 | <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] | 2906 | SkColorFilter* getColorFilter() const |
| 2907 | </pre> |
| 2908 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2909 | Returns <a href="undocumented#Color_Filter">Color Filter</a> if set, or nullptr. |
| 2910 | 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] | 2911 | |
| 2912 | ### Return Value |
| 2913 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2914 | <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] | 2915 | |
| 2916 | ### Example |
| 2917 | |
| 2918 | <div><fiddle-embed name="093bdc627d6b59002670fd290931f6c9"> |
| 2919 | |
| 2920 | #### Example Output |
| 2921 | |
| 2922 | ~~~~ |
| 2923 | nullptr == color filter |
| 2924 | nullptr != color filter |
| 2925 | ~~~~ |
| 2926 | |
| 2927 | </fiddle-embed></div> |
| 2928 | |
| 2929 | --- |
| 2930 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2931 | <a name="SkPaint_refColorFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2932 | ## refColorFilter |
| 2933 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2934 | <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] | 2935 | sk_sp<SkColorFilter> refColorFilter() const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2936 | </pre> |
| 2937 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2938 | Returns <a href="undocumented#Color_Filter">Color Filter</a> if set, or nullptr. |
| 2939 | 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] | 2940 | |
| 2941 | ### Return Value |
| 2942 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2943 | <a href="undocumented#Color_Filter">Color Filter</a> if set, or nullptr |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2944 | |
| 2945 | ### Example |
| 2946 | |
| 2947 | <div><fiddle-embed name="b588c95fa4c86ddbc4b0546762f08297"> |
| 2948 | |
| 2949 | #### Example Output |
| 2950 | |
| 2951 | ~~~~ |
| 2952 | color filter unique: true |
| 2953 | color filter unique: false |
| 2954 | ~~~~ |
| 2955 | |
| 2956 | </fiddle-embed></div> |
| 2957 | |
| 2958 | --- |
| 2959 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2960 | <a name="SkPaint_setColorFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2961 | ## setColorFilter |
| 2962 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 2963 | <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] | 2964 | void setColorFilter(sk_sp<SkColorFilter> colorFilter) |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2965 | </pre> |
| 2966 | |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 2967 | Sets <a href="undocumented#Color_Filter">Color Filter</a> to filter, decreasing <a href="undocumented#Reference_Count">Reference Count</a> of the previous |
| 2968 | <a href="undocumented#Color_Filter">Color Filter</a>. Pass nullptr to clear <a href="undocumented#Color_Filter">Color Filter</a>. |
| 2969 | |
| 2970 | Increments filter <a href="undocumented#Reference_Count">Reference Count</a> by one. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2971 | |
| 2972 | ### Parameters |
| 2973 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2974 | <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] | 2975 | <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] | 2976 | </tr> |
| 2977 | </table> |
| 2978 | |
| 2979 | ### Example |
| 2980 | |
| 2981 | <div><fiddle-embed name="c7b786dc9b3501cd0eaba47494b6fa31"></fiddle-embed></div> |
| 2982 | |
| 2983 | --- |
| 2984 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 2985 | ## <a name="Blend_Mode_Methods"></a> Blend Mode Methods |
| 2986 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2987 | <a href="undocumented#Blend_Mode">Blend Mode</a> describes how <a href="undocumented#Color">Color</a> combines with the destination color. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 2988 | The default setting, <a href="#SkBlendMode_kSrcOver">SkBlendMode::kSrcOver</a>, draws the source color |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2989 | over the destination color. |
| 2990 | |
| 2991 | ### Example |
| 2992 | |
| 2993 | <div><fiddle-embed name="73092d4d06faecea3c204d852a4dd8a8"></fiddle-embed></div> |
| 2994 | |
| 2995 | ### See Also |
| 2996 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 2997 | <a href="undocumented#Blend_Mode">Blend Mode</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 2998 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 2999 | <a name="SkPaint_getBlendMode"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3000 | ## getBlendMode |
| 3001 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3002 | <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] | 3003 | SkBlendMode getBlendMode() const |
| 3004 | </pre> |
| 3005 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3006 | Returns <a href="undocumented#Blend_Mode">Blend Mode</a>. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3007 | By default, returns <a href="#SkBlendMode_kSrcOver">SkBlendMode::kSrcOver</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3008 | |
| 3009 | ### Return Value |
| 3010 | |
| 3011 | mode used to combine source color with destination color |
| 3012 | |
| 3013 | ### Example |
| 3014 | |
| 3015 | <div><fiddle-embed name="4ec1864b8203d52c0810e8605092f45c"> |
| 3016 | |
| 3017 | #### Example Output |
| 3018 | |
| 3019 | ~~~~ |
| 3020 | kSrcOver == getBlendMode |
| 3021 | kSrcOver != getBlendMode |
| 3022 | ~~~~ |
| 3023 | |
| 3024 | </fiddle-embed></div> |
| 3025 | |
| 3026 | --- |
| 3027 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3028 | <a name="SkPaint_isSrcOver"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3029 | ## isSrcOver |
| 3030 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3031 | <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] | 3032 | bool isSrcOver() const |
| 3033 | </pre> |
| 3034 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3035 | Returns true if <a href="undocumented#Blend_Mode">Blend Mode</a> is <a href="#SkBlendMode_kSrcOver">SkBlendMode::kSrcOver</a>, the default. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3036 | |
| 3037 | ### Return Value |
| 3038 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3039 | true if <a href="undocumented#Blend_Mode">Blend Mode</a> is <a href="#SkBlendMode_kSrcOver">SkBlendMode::kSrcOver</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3040 | |
| 3041 | ### Example |
| 3042 | |
| 3043 | <div><fiddle-embed name="257c9473db7a2b3a0fb2b9e2431e59a6"> |
| 3044 | |
| 3045 | #### Example Output |
| 3046 | |
| 3047 | ~~~~ |
| 3048 | isSrcOver == true |
| 3049 | isSrcOver != true |
| 3050 | ~~~~ |
| 3051 | |
| 3052 | </fiddle-embed></div> |
| 3053 | |
| 3054 | --- |
| 3055 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3056 | <a name="SkPaint_setBlendMode"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3057 | ## setBlendMode |
| 3058 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3059 | <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] | 3060 | void setBlendMode(SkBlendMode mode) |
| 3061 | </pre> |
| 3062 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3063 | 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] | 3064 | Does not check for valid input. |
| 3065 | |
| 3066 | ### Parameters |
| 3067 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3068 | <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] | 3069 | <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] | 3070 | </tr> |
| 3071 | </table> |
| 3072 | |
| 3073 | ### Example |
| 3074 | |
| 3075 | <div><fiddle-embed name="257c9473db7a2b3a0fb2b9e2431e59a6"> |
| 3076 | |
| 3077 | #### Example Output |
| 3078 | |
| 3079 | ~~~~ |
| 3080 | isSrcOver == true |
| 3081 | isSrcOver != true |
| 3082 | ~~~~ |
| 3083 | |
| 3084 | </fiddle-embed></div> |
| 3085 | |
| 3086 | --- |
| 3087 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3088 | ## <a name="Path_Effect_Methods"></a> Path Effect Methods |
| 3089 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3090 | <a href="undocumented#Path_Effect">Path Effect</a> modifies the path geometry before drawing it. |
| 3091 | <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] | 3092 | 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] | 3093 | |
| 3094 | ### Example |
| 3095 | |
| 3096 | <div><fiddle-embed name="8cf5684b187d60f09e11c4a48993ea39"></fiddle-embed></div> |
| 3097 | |
| 3098 | ### See Also |
| 3099 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3100 | <a href="undocumented#Path_Effect">Path Effect</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3101 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3102 | <a name="SkPaint_getPathEffect"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3103 | ## getPathEffect |
| 3104 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3105 | <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] | 3106 | SkPathEffect* getPathEffect() const |
| 3107 | </pre> |
| 3108 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3109 | Returns <a href="undocumented#Path_Effect">Path Effect</a> if set, or nullptr. |
| 3110 | 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] | 3111 | |
| 3112 | ### Return Value |
| 3113 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3114 | <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] | 3115 | |
| 3116 | ### Example |
| 3117 | |
| 3118 | <div><fiddle-embed name="211a1b14bfa6c4332082c8eab4fbc5fd"> |
| 3119 | |
| 3120 | #### Example Output |
| 3121 | |
| 3122 | ~~~~ |
| 3123 | nullptr == path effect |
| 3124 | nullptr != path effect |
| 3125 | ~~~~ |
| 3126 | |
| 3127 | </fiddle-embed></div> |
| 3128 | |
| 3129 | --- |
| 3130 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3131 | <a name="SkPaint_refPathEffect"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3132 | ## refPathEffect |
| 3133 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3134 | <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] | 3135 | sk_sp<SkPathEffect> refPathEffect() const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3136 | </pre> |
| 3137 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3138 | Returns <a href="undocumented#Path_Effect">Path Effect</a> if set, or nullptr. |
| 3139 | 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] | 3140 | |
| 3141 | ### Return Value |
| 3142 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3143 | <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] | 3144 | |
| 3145 | ### Example |
| 3146 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3147 | <div><fiddle-embed name="f56039b94c702c2704c8c5100e623aca"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3148 | |
| 3149 | #### Example Output |
| 3150 | |
| 3151 | ~~~~ |
| 3152 | path effect unique: true |
| 3153 | path effect unique: false |
| 3154 | ~~~~ |
| 3155 | |
| 3156 | </fiddle-embed></div> |
| 3157 | |
| 3158 | --- |
| 3159 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3160 | <a name="SkPaint_setPathEffect"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3161 | ## setPathEffect |
| 3162 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3163 | <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] | 3164 | void setPathEffect(sk_sp<SkPathEffect> pathEffect) |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3165 | </pre> |
| 3166 | |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3167 | 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 |
| 3168 | <a href="undocumented#Path_Effect">Path Effect</a>. Pass nullptr to leave the path geometry unaltered. |
| 3169 | |
| 3170 | 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] | 3171 | |
| 3172 | ### Parameters |
| 3173 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3174 | <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] | 3175 | 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] | 3176 | </tr> |
| 3177 | </table> |
| 3178 | |
| 3179 | ### Example |
| 3180 | |
| 3181 | <div><fiddle-embed name="52dd55074ca0b7d520d04e750ca2a0d7"></fiddle-embed></div> |
| 3182 | |
| 3183 | --- |
| 3184 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3185 | ## <a name="Mask_Filter_Methods"></a> Mask Filter Methods |
| 3186 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 3187 | <a href="undocumented#Mask_Filter">Mask Filter</a> uses coverage of the shape drawn to create <a href="undocumented#Mask_Alpha">Mask Alpha</a>. |
Update Docs | 949cfd4 | 2018-01-22 05:50:26 +0000 | [diff] [blame] | 3188 | <a href="undocumented#Mask_Filter">Mask Filter</a> takes a <a href="undocumented#Mask">Mask</a>, and returns a <a href="undocumented#Mask">Mask</a>. |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3189 | |
| 3190 | <a href="undocumented#Mask_Filter">Mask Filter</a> may change the geometry and transparency of the shape, such as |
| 3191 | 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 |
| 3192 | modifying the draw. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3193 | |
| 3194 | ### Example |
| 3195 | |
| 3196 | <div><fiddle-embed name="320b04ea1e1291d49f1e61994a0410fe"></fiddle-embed></div> |
| 3197 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3198 | <a name="SkPaint_getMaskFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3199 | ## getMaskFilter |
| 3200 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3201 | <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] | 3202 | SkMaskFilter* getMaskFilter() const |
| 3203 | </pre> |
| 3204 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3205 | Returns <a href="undocumented#Mask_Filter">Mask Filter</a> if set, or nullptr. |
| 3206 | 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] | 3207 | |
| 3208 | ### Return Value |
| 3209 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3210 | <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] | 3211 | |
| 3212 | ### Example |
| 3213 | |
| 3214 | <div><fiddle-embed name="8cd53ece8fc83e4560599ace094b0f16"> |
| 3215 | |
| 3216 | #### Example Output |
| 3217 | |
| 3218 | ~~~~ |
| 3219 | nullptr == mask filter |
| 3220 | nullptr != mask filter |
| 3221 | ~~~~ |
| 3222 | |
| 3223 | </fiddle-embed></div> |
| 3224 | |
| 3225 | --- |
| 3226 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3227 | <a name="SkPaint_refMaskFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3228 | ## refMaskFilter |
| 3229 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3230 | <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] | 3231 | sk_sp<SkMaskFilter> refMaskFilter() const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3232 | </pre> |
| 3233 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3234 | 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] | 3235 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3236 | 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] | 3237 | |
| 3238 | ### Return Value |
| 3239 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3240 | <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] | 3241 | |
| 3242 | ### Example |
| 3243 | |
| 3244 | <div><fiddle-embed name="35a397dce5d44658ee4e9e9dfb9fee22"> |
| 3245 | |
| 3246 | #### Example Output |
| 3247 | |
| 3248 | ~~~~ |
| 3249 | mask filter unique: true |
| 3250 | mask filter unique: false |
| 3251 | ~~~~ |
| 3252 | |
| 3253 | </fiddle-embed></div> |
| 3254 | |
| 3255 | --- |
| 3256 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3257 | <a name="SkPaint_setMaskFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3258 | ## setMaskFilter |
| 3259 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3260 | <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] | 3261 | void setMaskFilter(sk_sp<SkMaskFilter> maskFilter) |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3262 | </pre> |
| 3263 | |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3264 | 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 |
| 3265 | <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 |
| 3266 | <a href="undocumented#Mask_Alpha">Mask Alpha</a> unaltered. |
| 3267 | |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3268 | 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] | 3269 | |
| 3270 | ### Parameters |
| 3271 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3272 | <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] | 3273 | modifies clipping mask generated from drawn geometry</td> |
| 3274 | </tr> |
| 3275 | </table> |
| 3276 | |
| 3277 | ### Example |
| 3278 | |
| 3279 | <div><fiddle-embed name="62c5a826692f85c3de3bab65e9e97aa9"></fiddle-embed></div> |
| 3280 | |
| 3281 | --- |
| 3282 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3283 | ## <a name="Typeface_Methods"></a> Typeface Methods |
| 3284 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3285 | <a href="undocumented#Typeface">Typeface</a> identifies the font used when drawing and measuring text. |
| 3286 | <a href="undocumented#Typeface">Typeface</a> may be specified by name, from a file, or from a data stream. |
| 3287 | 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] | 3288 | implementation. |
| 3289 | |
| 3290 | ### Example |
| 3291 | |
Ben Wagner | 700ff17 | 2017-11-08 15:37:22 -0500 | [diff] [blame] | 3292 | <div><fiddle-embed name="1a7a5062725139760962582f599f1b97"></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3293 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3294 | <a name="SkPaint_getTypeface"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3295 | ## getTypeface |
| 3296 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3297 | <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] | 3298 | SkTypeface* getTypeface() const |
| 3299 | </pre> |
| 3300 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3301 | Returns <a href="undocumented#Typeface">Typeface</a> if set, or nullptr. |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3302 | 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] | 3303 | |
| 3304 | ### Return Value |
| 3305 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3306 | <a href="undocumented#Typeface">Typeface</a> if previously set, nullptr otherwise |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3307 | |
| 3308 | ### Example |
| 3309 | |
Cary Clark | 71961fb | 2018-01-05 14:21:59 -0500 | [diff] [blame] | 3310 | <div><fiddle-embed name="5ce718e5a184baaac80e7098d7dad67b"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3311 | |
| 3312 | #### Example Output |
| 3313 | |
| 3314 | ~~~~ |
| 3315 | nullptr == typeface |
| 3316 | nullptr != typeface |
| 3317 | ~~~~ |
| 3318 | |
| 3319 | </fiddle-embed></div> |
| 3320 | |
| 3321 | --- |
| 3322 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3323 | <a name="SkPaint_refTypeface"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3324 | ## refTypeface |
| 3325 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3326 | <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] | 3327 | sk_sp<SkTypeface> refTypeface() const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3328 | </pre> |
| 3329 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3330 | 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] | 3331 | |
| 3332 | ### Return Value |
| 3333 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3334 | <a href="undocumented#Typeface">Typeface</a> if previously set, nullptr otherwise |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3335 | |
| 3336 | ### Example |
| 3337 | |
Cary Clark | 71961fb | 2018-01-05 14:21:59 -0500 | [diff] [blame] | 3338 | <div><fiddle-embed name="4bf8ed109c4b46d8a05c8b7763c1982c"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3339 | |
| 3340 | #### Example Output |
| 3341 | |
| 3342 | ~~~~ |
| 3343 | typeface1 != typeface2 |
| 3344 | typeface1 == typeface2 |
| 3345 | ~~~~ |
| 3346 | |
| 3347 | </fiddle-embed></div> |
| 3348 | |
| 3349 | --- |
| 3350 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3351 | <a name="SkPaint_setTypeface"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3352 | ## setTypeface |
| 3353 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3354 | <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] | 3355 | void setTypeface(sk_sp<SkTypeface> typeface) |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3356 | </pre> |
| 3357 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3358 | 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] | 3359 | Pass nullptr to clear <a href="undocumented#Typeface">Typeface</a> and use the default <a href="#SkPaint_setTypeface_typeface">typeface</a>. Increments |
| 3360 | <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] | 3361 | |
| 3362 | ### Parameters |
| 3363 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3364 | <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] | 3365 | font and style used to draw text</td> |
| 3366 | </tr> |
| 3367 | </table> |
| 3368 | |
| 3369 | ### Example |
| 3370 | |
Cary Clark | 71961fb | 2018-01-05 14:21:59 -0500 | [diff] [blame] | 3371 | <div><fiddle-embed name="0e6fbb7773cd925b274552f4cd1abef2"></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3372 | |
| 3373 | --- |
| 3374 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3375 | ## <a name="Image_Filter_Methods"></a> Image Filter Methods |
| 3376 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3377 | <a href="undocumented#Image_Filter">Image Filter</a> operates on the pixel representation of the shape, as modified by <a href="#Paint">Paint</a> |
| 3378 | with <a href="undocumented#Blend_Mode">Blend Mode</a> set to <a href="#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] | 3379 | 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] | 3380 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3381 | <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 | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 3382 | can operate on all channels of <a href="undocumented#Color">Color</a>, while <a href="undocumented#Mask_Filter">Mask Filter</a> generates <a href="#Alpha">Alpha</a> only. |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3383 | <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] | 3384 | <a href="undocumented#Mask_Filter">Mask Filter</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3385 | |
| 3386 | ### Example |
| 3387 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3388 | <div><fiddle-embed name="0b2eec148d6397d6231e1fa0b3d1496d"></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3389 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3390 | <a name="SkPaint_getImageFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3391 | ## getImageFilter |
| 3392 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3393 | <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] | 3394 | SkImageFilter* getImageFilter() const |
| 3395 | </pre> |
| 3396 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3397 | Returns <a href="undocumented#Image_Filter">Image Filter</a> if set, or nullptr. |
| 3398 | 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] | 3399 | |
| 3400 | ### Return Value |
| 3401 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3402 | <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] | 3403 | |
| 3404 | ### Example |
| 3405 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3406 | <div><fiddle-embed name="7b8118ff57fcb84e6bc82380d155b62e"> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3407 | |
| 3408 | #### Example Output |
| 3409 | |
| 3410 | ~~~~ |
| 3411 | nullptr == image filter |
| 3412 | nullptr != image filter |
| 3413 | ~~~~ |
| 3414 | |
| 3415 | </fiddle-embed></div> |
| 3416 | |
| 3417 | --- |
| 3418 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3419 | <a name="SkPaint_refImageFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3420 | ## refImageFilter |
| 3421 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3422 | <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] | 3423 | sk_sp<SkImageFilter> refImageFilter() const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3424 | </pre> |
| 3425 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3426 | Returns <a href="undocumented#Image_Filter">Image Filter</a> if set, or nullptr. |
| 3427 | 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] | 3428 | |
| 3429 | ### Return Value |
| 3430 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3431 | <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] | 3432 | |
| 3433 | ### Example |
| 3434 | |
| 3435 | <div><fiddle-embed name="13f09088b569251547107d14ae989dc1"> |
| 3436 | |
| 3437 | #### Example Output |
| 3438 | |
| 3439 | ~~~~ |
| 3440 | image filter unique: true |
| 3441 | image filter unique: false |
| 3442 | ~~~~ |
| 3443 | |
| 3444 | </fiddle-embed></div> |
| 3445 | |
| 3446 | --- |
| 3447 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3448 | <a name="SkPaint_setImageFilter"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3449 | ## setImageFilter |
| 3450 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3451 | <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] | 3452 | void setImageFilter(sk_sp<SkImageFilter> imageFilter) |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3453 | </pre> |
| 3454 | |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3455 | 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 |
| 3456 | <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] | 3457 | on drawing. |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3458 | |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3459 | 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] | 3460 | |
| 3461 | ### Parameters |
| 3462 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3463 | <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] | 3464 | 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] | 3465 | </tr> |
| 3466 | </table> |
| 3467 | |
| 3468 | ### Example |
| 3469 | |
| 3470 | <div><fiddle-embed name="6679d6e4ec632715ee03e68391bd7f9a"></fiddle-embed></div> |
| 3471 | |
| 3472 | --- |
| 3473 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3474 | ## <a name="Draw_Looper_Methods"></a> Draw Looper Methods |
| 3475 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3476 | <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] | 3477 | to another to construct the draw. |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3478 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3479 | <a href="undocumented#Draw_Looper">Draw Looper</a> draws one or more times, modifying the canvas and paint each time. |
| 3480 | <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] | 3481 | 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] | 3482 | |
| 3483 | ### Example |
| 3484 | |
| 3485 | <div><fiddle-embed name="84ec12a36e50df5ac565cc7a75ffbe9f"></fiddle-embed></div> |
| 3486 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3487 | <a name="SkPaint_getDrawLooper"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3488 | ## getDrawLooper |
| 3489 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3490 | <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] | 3491 | SkDrawLooper* getDrawLooper() const |
| 3492 | </pre> |
| 3493 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3494 | Returns <a href="undocumented#Draw_Looper">Draw Looper</a> if set, or nullptr. |
| 3495 | 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] | 3496 | |
| 3497 | ### Return Value |
| 3498 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3499 | <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] | 3500 | |
| 3501 | ### Example |
| 3502 | |
| 3503 | <div><fiddle-embed name="af4c5acc7a91e7f23c2af48018903ad4"> |
| 3504 | |
| 3505 | #### Example Output |
| 3506 | |
| 3507 | ~~~~ |
| 3508 | nullptr == draw looper |
| 3509 | nullptr != draw looper |
| 3510 | ~~~~ |
| 3511 | |
| 3512 | </fiddle-embed></div> |
| 3513 | |
| 3514 | --- |
| 3515 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3516 | <a name="SkPaint_refDrawLooper"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3517 | ## refDrawLooper |
| 3518 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3519 | <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] | 3520 | sk_sp<SkDrawLooper> refDrawLooper() const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3521 | </pre> |
| 3522 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3523 | Returns <a href="undocumented#Draw_Looper">Draw Looper</a> if set, or nullptr. |
| 3524 | 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] | 3525 | |
| 3526 | ### Return Value |
| 3527 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3528 | <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] | 3529 | |
| 3530 | ### Example |
| 3531 | |
| 3532 | <div><fiddle-embed name="2a3782c33f04ed17a725d0e449c6f7c3"> |
| 3533 | |
| 3534 | #### Example Output |
| 3535 | |
| 3536 | ~~~~ |
| 3537 | draw looper unique: true |
| 3538 | draw looper unique: false |
| 3539 | ~~~~ |
| 3540 | |
| 3541 | </fiddle-embed></div> |
| 3542 | |
| 3543 | --- |
| 3544 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3545 | <a name="SkPaint_getLooper"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3546 | ## getLooper |
| 3547 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3548 | <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] | 3549 | SkDrawLooper* getLooper() const |
| 3550 | </pre> |
| 3551 | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3552 | --- |
| 3553 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3554 | <a name="SkPaint_setDrawLooper"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3555 | ## setDrawLooper |
| 3556 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3557 | <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] | 3558 | void setDrawLooper(sk_sp<SkDrawLooper> drawLooper) |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3559 | </pre> |
| 3560 | |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3561 | 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 |
| 3562 | <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 |
| 3563 | drawing unaltered. |
| 3564 | |
| 3565 | 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] | 3566 | |
| 3567 | ### Parameters |
| 3568 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3569 | <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] | 3570 | 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] | 3571 | </tr> |
| 3572 | </table> |
| 3573 | |
| 3574 | ### Example |
| 3575 | |
| 3576 | <div><fiddle-embed name="bf10f838b330f0a3a3266d42ea68a638"></fiddle-embed></div> |
| 3577 | |
| 3578 | --- |
| 3579 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3580 | <a name="SkPaint_setLooper"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3581 | ## setLooper |
| 3582 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3583 | <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] | 3584 | void setLooper(sk_sp<SkDrawLooper> drawLooper) |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3585 | </pre> |
| 3586 | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3587 | --- |
| 3588 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3589 | ## <a name="Text_Align"></a> Text Align |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3590 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3591 | ## <a name="SkPaint_Align"></a> Enum SkPaint::Align |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3592 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3593 | <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] | 3594 | enum <a href="#SkPaint_Align">Align</a> { |
| 3595 | <a href="#SkPaint_kLeft_Align">kLeft Align</a>, |
| 3596 | <a href="#SkPaint_kCenter_Align">kCenter Align</a>, |
| 3597 | <a href="#SkPaint_kRight_Align">kRight Align</a>, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3598 | };</pre> |
| 3599 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3600 | <a href="#SkPaint_Align">Align</a> adjusts the text relative to the text position. |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 3601 | <a href="#SkPaint_Align">Align</a> affects <a href="#Glyph">Glyphs</a> drawn with: <a href="#SkCanvas_drawText">SkCanvas::drawText</a>, <a href="#SkCanvas_drawPosText">SkCanvas::drawPosText</a>, |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3602 | <a href="#SkCanvas_drawPosTextH">SkCanvas::drawPosTextH</a>, <a href="#SkCanvas_drawTextOnPath">SkCanvas::drawTextOnPath</a>, |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3603 | <a href="#SkCanvas_drawTextOnPathHV">SkCanvas::drawTextOnPathHV</a>, <a href="#SkCanvas_drawTextRSXform">SkCanvas::drawTextRSXform</a>, <a href="#SkCanvas_drawTextBlob">SkCanvas::drawTextBlob</a>, |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3604 | and <a href="#SkCanvas_drawString">SkCanvas::drawString</a>; |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 3605 | as well as calls that place text <a href="#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] | 3606 | |
| 3607 | The text position is set by the font for both horizontal and vertical text. |
| 3608 | Typically, for horizontal text, the position is to the left side of the glyph on the |
| 3609 | base line; and for vertical text, the position is the horizontal center of the glyph |
| 3610 | at the caps height. |
| 3611 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3612 | <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] | 3613 | using the metrics returned by the font. |
| 3614 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3615 | <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] | 3616 | |
| 3617 | ### Constants |
| 3618 | |
| 3619 | <table> |
| 3620 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3621 | <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.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3622 | </tr> |
| 3623 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3624 | <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 |
| 3625 | half its height if <a href="#SkPaint_Flags">Flags</a> has <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> set.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3626 | </tr> |
| 3627 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3628 | <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, |
| 3629 | and by its height if <a href="#SkPaint_Flags">Flags</a> has <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> set.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3630 | </tr> |
| 3631 | |
| 3632 | </table> |
| 3633 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3634 | ## <a name="SkPaint__anonymous_2"></a> Enum SkPaint::_anonymous_2 |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3635 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3636 | <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] | 3637 | enum { |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3638 | <a href="#SkPaint_kAlignCount">kAlignCount</a> = 3, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3639 | };</pre> |
| 3640 | |
| 3641 | ### Constants |
| 3642 | |
| 3643 | <table> |
| 3644 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3645 | <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.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3646 | </tr> |
| 3647 | |
| 3648 | </table> |
| 3649 | |
| 3650 | ### Example |
| 3651 | |
| 3652 | <div><fiddle-embed name="702617fd9ebc3f12e30081b5db93e8a8"><div>Each position separately moves the glyph in drawPosText.</div></fiddle-embed></div> |
| 3653 | |
| 3654 | ### Example |
| 3655 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3656 | <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.</div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3657 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3658 | <a name="SkPaint_getTextAlign"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3659 | ## getTextAlign |
| 3660 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3661 | <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] | 3662 | Align getTextAlign() const |
| 3663 | </pre> |
| 3664 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3665 | Returns <a href="#Text_Align">Text Align</a>. |
| 3666 | 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] | 3667 | |
| 3668 | ### Return Value |
| 3669 | |
| 3670 | text placement relative to position |
| 3671 | |
| 3672 | ### Example |
| 3673 | |
| 3674 | <div><fiddle-embed name="2df932f526e810f74c89d30ec3f4c947"> |
| 3675 | |
| 3676 | #### Example Output |
| 3677 | |
| 3678 | ~~~~ |
| 3679 | kLeft_Align == default |
| 3680 | ~~~~ |
| 3681 | |
| 3682 | </fiddle-embed></div> |
| 3683 | |
| 3684 | --- |
| 3685 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3686 | <a name="SkPaint_setTextAlign"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3687 | ## setTextAlign |
| 3688 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3689 | <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] | 3690 | void setTextAlign(Align align) |
| 3691 | </pre> |
| 3692 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3693 | Sets <a href="#Text_Align">Text Align</a> to <a href="#SkPaint_setTextAlign_align">align</a>. |
| 3694 | 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] | 3695 | |
| 3696 | ### Parameters |
| 3697 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3698 | <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] | 3699 | text placement relative to position</td> |
| 3700 | </tr> |
| 3701 | </table> |
| 3702 | |
| 3703 | ### Example |
| 3704 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3705 | <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 | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3706 | alignment out of range has no effect.</div></fiddle-embed></div> |
| 3707 | |
| 3708 | --- |
| 3709 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3710 | ## <a name="Text_Size"></a> Text Size |
| 3711 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3712 | <a href="#Text_Size">Text Size</a> adjusts the overall text size in points. |
| 3713 | <a href="#Text_Size">Text Size</a> can be set to any positive value or zero. |
| 3714 | <a href="#Text_Size">Text Size</a> defaults to 12. |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3715 | 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] | 3716 | |
| 3717 | ### Example |
| 3718 | |
| 3719 | <div><fiddle-embed name="91c9a3e498bb9412e4522a95d076ed5f"></fiddle-embed></div> |
| 3720 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3721 | <a name="SkPaint_getTextSize"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3722 | ## getTextSize |
| 3723 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3724 | <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] | 3725 | SkScalar getTextSize() const |
| 3726 | </pre> |
| 3727 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3728 | Returns <a href="#Text_Size">Text Size</a> in points. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3729 | |
| 3730 | ### Return Value |
| 3731 | |
| 3732 | typographic height of text |
| 3733 | |
| 3734 | ### Example |
| 3735 | |
| 3736 | <div><fiddle-embed name="983e2a71ba72d4ba8c945420040b8f1c"></fiddle-embed></div> |
| 3737 | |
| 3738 | --- |
| 3739 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3740 | <a name="SkPaint_setTextSize"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3741 | ## setTextSize |
| 3742 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3743 | <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] | 3744 | void setTextSize(SkScalar textSize) |
| 3745 | </pre> |
| 3746 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3747 | Sets <a href="#Text_Size">Text Size</a> in points. |
| 3748 | 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] | 3749 | |
| 3750 | ### Parameters |
| 3751 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3752 | <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] | 3753 | typographic height of text</td> |
| 3754 | </tr> |
| 3755 | </table> |
| 3756 | |
| 3757 | ### Example |
| 3758 | |
| 3759 | <div><fiddle-embed name="6510c9e2f57b83c47e67829e7a68d493"></fiddle-embed></div> |
| 3760 | |
| 3761 | --- |
| 3762 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3763 | ## <a name="Text_Scale_X"></a> Text Scale X |
| 3764 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3765 | <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] | 3766 | <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] | 3767 | is not available. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3768 | <a href="#Text_Scale_X">Text Scale X</a> can be set to any value. |
| 3769 | <a href="#Text_Scale_X">Text Scale X</a> defaults to 1. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3770 | |
| 3771 | ### Example |
| 3772 | |
| 3773 | <div><fiddle-embed name="d13d787c1e36f515319fc998411c1d91"></fiddle-embed></div> |
| 3774 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3775 | <a name="SkPaint_getTextScaleX"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3776 | ## getTextScaleX |
| 3777 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3778 | <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] | 3779 | SkScalar getTextScaleX() const |
| 3780 | </pre> |
| 3781 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3782 | Returns <a href="#Text_Scale_X">Text Scale X</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3783 | Default value is 1. |
| 3784 | |
| 3785 | ### Return Value |
| 3786 | |
| 3787 | text horizontal scale |
| 3788 | |
| 3789 | ### Example |
| 3790 | |
| 3791 | <div><fiddle-embed name="5dc8e58f6910cb8e4de9ed60f888188b"></fiddle-embed></div> |
| 3792 | |
| 3793 | --- |
| 3794 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3795 | <a name="SkPaint_setTextScaleX"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3796 | ## setTextScaleX |
| 3797 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3798 | <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] | 3799 | void setTextScaleX(SkScalar scaleX) |
| 3800 | </pre> |
| 3801 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3802 | Sets <a href="#Text_Scale_X">Text Scale X</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3803 | Default value is 1. |
| 3804 | |
| 3805 | ### Parameters |
| 3806 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3807 | <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] | 3808 | text horizontal scale</td> |
| 3809 | </tr> |
| 3810 | </table> |
| 3811 | |
| 3812 | ### Example |
| 3813 | |
| 3814 | <div><fiddle-embed name="a75bbdb8bb866b125c4c1dd5e967d470"></fiddle-embed></div> |
| 3815 | |
| 3816 | --- |
| 3817 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3818 | ## <a name="Text_Skew_X"></a> Text Skew X |
| 3819 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3820 | <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] | 3821 | <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] | 3822 | is not available. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3823 | <a href="#Text_Skew_X">Text Skew X</a> can be set to any value. |
| 3824 | <a href="#Text_Skew_X">Text Skew X</a> defaults to 0. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3825 | |
| 3826 | ### Example |
| 3827 | |
| 3828 | <div><fiddle-embed name="aff208b0aab265f273045b27e683c17c"></fiddle-embed></div> |
| 3829 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3830 | <a name="SkPaint_getTextSkewX"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3831 | ## getTextSkewX |
| 3832 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3833 | <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] | 3834 | SkScalar getTextSkewX() const |
| 3835 | </pre> |
| 3836 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3837 | Returns <a href="#Text_Skew_X">Text Skew X</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3838 | Default value is zero. |
| 3839 | |
| 3840 | ### Return Value |
| 3841 | |
| 3842 | additional shear in x-axis relative to y-axis |
| 3843 | |
| 3844 | ### Example |
| 3845 | |
| 3846 | <div><fiddle-embed name="11c10f466dae0d1639dbb9f6a0040218"></fiddle-embed></div> |
| 3847 | |
| 3848 | --- |
| 3849 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3850 | <a name="SkPaint_setTextSkewX"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3851 | ## setTextSkewX |
| 3852 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3853 | <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] | 3854 | void setTextSkewX(SkScalar skewX) |
| 3855 | </pre> |
| 3856 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3857 | Sets <a href="#Text_Skew_X">Text Skew X</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3858 | Default value is zero. |
| 3859 | |
| 3860 | ### Parameters |
| 3861 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3862 | <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] | 3863 | additional shear in x-axis relative to y-axis</td> |
| 3864 | </tr> |
| 3865 | </table> |
| 3866 | |
| 3867 | ### Example |
| 3868 | |
| 3869 | <div><fiddle-embed name="6bd705a6e0c5f8ee24f302fe531bfabc"></fiddle-embed></div> |
| 3870 | |
| 3871 | --- |
| 3872 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3873 | ## <a name="Text_Encoding"></a> Text Encoding |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3874 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3875 | ## <a name="SkPaint_TextEncoding"></a> Enum SkPaint::TextEncoding |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3876 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3877 | <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] | 3878 | enum <a href="#SkPaint_TextEncoding">TextEncoding</a> { |
| 3879 | <a href="#SkPaint_kUTF8_TextEncoding">kUTF8 TextEncoding</a>, |
| 3880 | <a href="#SkPaint_kUTF16_TextEncoding">kUTF16 TextEncoding</a>, |
| 3881 | <a href="#SkPaint_kUTF32_TextEncoding">kUTF32 TextEncoding</a>, |
| 3882 | <a href="#SkPaint_kGlyphID_TextEncoding">kGlyphID TextEncoding</a>, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3883 | };</pre> |
| 3884 | |
Cary Clark | 6fc5041 | 2017-09-21 12:31:06 -0400 | [diff] [blame] | 3885 | <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] | 3886 | 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] | 3887 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3888 | 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] | 3889 | 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] | 3890 | in the total storage required. |
| 3891 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3892 | <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] | 3893 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3894 | <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] | 3895 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3896 | <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] | 3897 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3898 | <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] | 3899 | A glyph index is a 16-bit word. |
| 3900 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3901 | <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] | 3902 | |
| 3903 | ### Constants |
| 3904 | |
| 3905 | <table> |
| 3906 | <tr> |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3907 | <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.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3908 | </tr> |
| 3909 | <tr> |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3910 | <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.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3911 | </tr> |
| 3912 | <tr> |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3913 | <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.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3914 | </tr> |
| 3915 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3916 | <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.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3917 | </tr> |
| 3918 | |
| 3919 | </table> |
| 3920 | |
| 3921 | ### Example |
| 3922 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3923 | <div><fiddle-embed name="b29294e7f29d160a1b46abf2dcec9d2a"><div>First line is encoded in UTF-8. |
| 3924 | Second line is encoded in UTF-16. |
| 3925 | Third line is encoded in UTF-32. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3926 | Fourth line has 16 bit glyph indices.</div></fiddle-embed></div> |
| 3927 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3928 | <a name="SkPaint_getTextEncoding"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3929 | ## getTextEncoding |
| 3930 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3931 | <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] | 3932 | TextEncoding getTextEncoding() const |
| 3933 | </pre> |
| 3934 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3935 | Returns <a href="#Text_Encoding">Text Encoding</a>. |
| 3936 | <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] | 3937 | |
| 3938 | ### Return Value |
| 3939 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3940 | 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] | 3941 | <a href="#SkPaint_kGlyphID_TextEncoding">kGlyphID TextEncoding</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3942 | |
| 3943 | ### Example |
| 3944 | |
| 3945 | <div><fiddle-embed name="70ad28bbf7668b38474d7f225e3540bc"> |
| 3946 | |
| 3947 | #### Example Output |
| 3948 | |
| 3949 | ~~~~ |
| 3950 | kUTF8_TextEncoding == text encoding |
| 3951 | kGlyphID_TextEncoding == text encoding |
| 3952 | ~~~~ |
| 3953 | |
| 3954 | </fiddle-embed></div> |
| 3955 | |
| 3956 | --- |
| 3957 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 3958 | <a name="SkPaint_setTextEncoding"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3959 | ## setTextEncoding |
| 3960 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 3961 | <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] | 3962 | void setTextEncoding(TextEncoding encoding) |
| 3963 | </pre> |
| 3964 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3965 | 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] | 3966 | <a href="#Text_Encoding">Text Encoding</a> determines how character code points are mapped to font glyph indices. |
| 3967 | Invalid values for <a href="#SkPaint_setTextEncoding_encoding">encoding</a> are ignored. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3968 | |
| 3969 | ### Parameters |
| 3970 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 3971 | <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] | 3972 | 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] | 3973 | <a href="#SkPaint_kGlyphID_TextEncoding">kGlyphID TextEncoding</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3974 | </tr> |
Cary Clark | bad5ad7 | 2017-08-03 17:14:08 -0400 | [diff] [blame] | 3975 | # |
| 3976 | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 3977 | </table> |
| 3978 | |
| 3979 | ### Example |
| 3980 | |
| 3981 | <div><fiddle-embed name="329b92fbc35151dee9aa0c0e70107665"> |
| 3982 | |
| 3983 | #### Example Output |
| 3984 | |
| 3985 | ~~~~ |
| 3986 | 4 != text encoding |
| 3987 | ~~~~ |
| 3988 | |
| 3989 | </fiddle-embed></div> |
| 3990 | |
| 3991 | --- |
| 3992 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 3993 | ## <a name="Font_Metrics"></a> Font Metrics |
| 3994 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 3995 | <a href="#Font_Metrics">Font Metrics</a> describe dimensions common to the <a href="#Glyph">Glyphs</a> in <a href="undocumented#Typeface">Typeface</a>. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 3996 | 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] | 3997 | <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] | 3998 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 3999 | <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] | 4000 | X-axis values to the left of the glyph are negative, and to the right of the left glyph edge |
| 4001 | are positive. |
| 4002 | Y-axis values above the baseline are negative, and below the baseline are positive. |
| 4003 | |
| 4004 | ### Example |
| 4005 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4006 | <div><fiddle-embed name="2bfa3783719fcd769af177a1b244e171"></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4007 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4008 | # <a name="SkPaint_FontMetrics"></a> Struct SkPaint::FontMetrics |
Cary Clark | e4aa371 | 2017-09-15 02:56:12 -0400 | [diff] [blame] | 4009 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4010 | <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] | 4011 | struct <a href="#SkPaint_FontMetrics">FontMetrics</a> { |
| 4012 | enum <a href="#SkPaint_FontMetrics_FontMetricsFlags">FontMetricsFlags</a> { |
| 4013 | <a href="#SkPaint_FontMetrics_kUnderlineThicknessIsValid_Flag">kUnderlineThicknessIsValid Flag</a> = 1 << 0, |
| 4014 | <a href="#SkPaint_FontMetrics_kUnderlinePositionIsValid_Flag">kUnderlinePositionIsValid Flag</a> = 1 << 1, |
| 4015 | <a href="#SkPaint_FontMetrics_kStrikeoutThicknessIsValid_Flag">kStrikeoutThicknessIsValid Flag</a> = 1 << 2, |
| 4016 | <a href="#SkPaint_FontMetrics_kStrikeoutPositionIsValid_Flag">kStrikeoutPositionIsValid Flag</a> = 1 << 3, |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4017 | }; |
| 4018 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4019 | uint32_t <a href="#SkPaint_FontMetrics_fFlags">fFlags</a>; |
| 4020 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fTop">fTop</a>; |
| 4021 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fAscent">fAscent</a>; |
| 4022 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fDescent">fDescent</a>; |
| 4023 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fBottom">fBottom</a>; |
| 4024 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fLeading">fLeading</a>; |
| 4025 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fAvgCharWidth">fAvgCharWidth</a>; |
| 4026 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fMaxCharWidth">fMaxCharWidth</a>; |
| 4027 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fXMin">fXMin</a>; |
| 4028 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fXMax">fXMax</a>; |
| 4029 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fXHeight">fXHeight</a>; |
| 4030 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fCapHeight">fCapHeight</a>; |
| 4031 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fUnderlineThickness">fUnderlineThickness</a>; |
| 4032 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fUnderlinePosition">fUnderlinePosition</a>; |
| 4033 | <a href="undocumented#SkScalar">SkScalar</a> <a href="#SkPaint_FontMetrics_fStrikeoutThickness">fStrikeoutThickness</a>; |
| 4034 | <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] | 4035 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4036 | bool <a href="#SkPaint_FontMetrics_hasUnderlineThickness">hasUnderlineThickness(SkScalar* thickness)</a> const; |
| 4037 | bool <a href="#SkPaint_FontMetrics_hasUnderlinePosition">hasUnderlinePosition(SkScalar* position)</a> const; |
| 4038 | bool <a href="#SkPaint_FontMetrics_hasStrikeoutThickness">hasStrikeoutThickness(SkScalar* thickness)</a> const; |
| 4039 | bool <a href="#SkPaint_FontMetrics_hasStrikeoutPosition">hasStrikeoutPosition(SkScalar* position)</a> const; |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4040 | };</pre> |
| 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 | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4064 | };</pre> |
| 4065 | |
Cary Clark | 154beea | 2017-10-26 07:58:48 -0400 | [diff] [blame] | 4066 | <a href="#SkPaint_FontMetrics_FontMetricsFlags">FontMetricsFlags</a> are set in <a href="#SkPaint_FontMetrics_fFlags">fFlags</a> when underline and strikeout metrics are valid; |
| 4067 | the underline or strikeout metric may be valid and zero. |
| 4068 | Fonts with embedded bitmaps may not have valid underline or strikeout metrics. |
| 4069 | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4070 | ### Constants |
| 4071 | |
| 4072 | <table> |
| 4073 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4074 | <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.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4075 | </tr> |
| 4076 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4077 | <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.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4078 | </tr> |
| 4079 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4080 | <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.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4081 | </tr> |
| 4082 | <tr> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4083 | <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.</td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4084 | </tr> |
| 4085 | |
| 4086 | </table> |
| 4087 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4088 | <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] | 4089 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4090 | <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] | 4091 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4092 | <a name="SkPaint_FontMetrics_fTop"> <code><strong>SkScalar fTop</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4093 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4094 | Greatest extent above the baseline for any glyph. |
| 4095 | Typically less than zero. |
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_fAscent"> <code><strong>SkScalar fAscent</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4098 | |
| 4099 | Recommended distance above the baseline to reserve for a line of text. |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 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_fDescent"> <code><strong>SkScalar fDescent</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4103 | |
| 4104 | Recommended distance below the baseline to reserve for a line of text. |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4105 | Typically greater 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_fBottom"> <code><strong>SkScalar fBottom</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4108 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4109 | Greatest extent below the baseline for any glyph. |
| 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_fLeading"> <code><strong>SkScalar fLeading</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4113 | |
| 4114 | Recommended distance to add between lines of text. |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4115 | Typically greater than or equal to 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_fAvgCharWidth"> <code><strong>SkScalar fAvgCharWidth</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4118 | |
| 4119 | Average character width, if it is available. |
| 4120 | Zero if no average width is stored in the font. |
| 4121 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4122 | <a name="SkPaint_FontMetrics_fMaxCharWidth"> <code><strong>SkScalar fMaxCharWidth</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4123 | |
| 4124 | Maximum character width. |
| 4125 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4126 | <a name="SkPaint_FontMetrics_fXMin"> <code><strong>SkScalar fXMin</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4127 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4128 | Minimum bounding box x value for all <a href="#Glyph">Glyphs</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4129 | Typically less than zero. |
| 4130 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4131 | <a name="SkPaint_FontMetrics_fXMax"> <code><strong>SkScalar fXMax</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4132 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4133 | Maximum bounding box x value for all <a href="#Glyph">Glyphs</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4134 | Typically greater than zero. |
| 4135 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4136 | <a name="SkPaint_FontMetrics_fXHeight"> <code><strong>SkScalar fXHeight</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4137 | |
| 4138 | Height of a lower-case 'x'. |
| 4139 | May be zero if no lower-case height is stored in the font. |
| 4140 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4141 | <a name="SkPaint_FontMetrics_fCapHeight"> <code><strong>SkScalar fCapHeight</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4142 | |
| 4143 | Height of an upper-case letter. |
| 4144 | May be zero if no upper-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_fUnderlineThickness"> <code><strong>SkScalar fUnderlineThickness</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4147 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4148 | Underline thickness. |
| 4149 | |
| 4150 | 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] | 4151 | 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] | 4152 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4153 | <a name="SkPaint_FontMetrics_fUnderlinePosition"> <code><strong>SkScalar fUnderlinePosition</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4154 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4155 | Position of the top of the underline stroke relative to the baseline. |
| 4156 | Typically positive when valid. |
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 | 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>. |
| 4159 | 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] | 4160 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4161 | <a name="SkPaint_FontMetrics_fStrikeoutThickness"> <code><strong>SkScalar fStrikeoutThickness</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4162 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4163 | Strikeout thickness. |
| 4164 | |
| 4165 | 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] | 4166 | 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] | 4167 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4168 | <a name="SkPaint_FontMetrics_fStrikeoutPosition"> <code><strong>SkScalar fStrikeoutPosition</strong></code> </a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4169 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4170 | Position of the bottom of the strikeout stroke relative to the baseline. |
| 4171 | Typically negative when valid. |
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 | 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>. |
| 4174 | 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] | 4175 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4176 | <a name="SkPaint_FontMetrics_hasUnderlineThickness"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4177 | ## hasUnderlineThickness |
| 4178 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4179 | <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] | 4180 | bool hasUnderlineThickness(SkScalar* thickness) const |
| 4181 | </pre> |
| 4182 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4183 | 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] | 4184 | <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, |
| 4185 | return false, and ignore <a href="#SkPaint_FontMetrics_hasUnderlineThickness_thickness">thickness</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4186 | |
| 4187 | ### Parameters |
| 4188 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4189 | <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] | 4190 | storage for underline width</td> |
| 4191 | </tr> |
| 4192 | </table> |
| 4193 | |
| 4194 | ### Return Value |
| 4195 | |
| 4196 | true if font specifies underline width |
| 4197 | |
| 4198 | --- |
| 4199 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4200 | <a name="SkPaint_FontMetrics_hasUnderlinePosition"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4201 | ## hasUnderlinePosition |
| 4202 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4203 | <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] | 4204 | bool hasUnderlinePosition(SkScalar* position) const |
| 4205 | </pre> |
| 4206 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4207 | 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] | 4208 | <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, |
| 4209 | return false, and ignore <a href="#SkPaint_FontMetrics_hasUnderlinePosition_position">position</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4210 | |
| 4211 | ### Parameters |
| 4212 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4213 | <table> <tr> <td><a name="SkPaint_FontMetrics_hasUnderlinePosition_position"> <code><strong>position </strong></code> </a></td> <td> |
| 4214 | storage for underline <a href="#SkPaint_FontMetrics_hasUnderlinePosition_position">position</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4215 | </tr> |
| 4216 | </table> |
| 4217 | |
| 4218 | ### Return Value |
| 4219 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4220 | 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] | 4221 | |
| 4222 | --- |
| 4223 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4224 | <a name="SkPaint_FontMetrics_hasStrikeoutThickness"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4225 | ## hasStrikeoutThickness |
| 4226 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4227 | <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] | 4228 | bool hasStrikeoutThickness(SkScalar* thickness) const |
| 4229 | </pre> |
| 4230 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4231 | 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] | 4232 | <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, |
| 4233 | return false, and ignore <a href="#SkPaint_FontMetrics_hasStrikeoutThickness_thickness">thickness</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4234 | |
| 4235 | ### Parameters |
| 4236 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4237 | <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] | 4238 | storage for strikeout width</td> |
| 4239 | </tr> |
| 4240 | </table> |
| 4241 | |
| 4242 | ### Return Value |
| 4243 | |
| 4244 | true if font specifies strikeout width |
| 4245 | |
| 4246 | --- |
| 4247 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4248 | <a name="SkPaint_FontMetrics_hasStrikeoutPosition"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4249 | ## hasStrikeoutPosition |
| 4250 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4251 | <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] | 4252 | bool hasStrikeoutPosition(SkScalar* position) const |
| 4253 | </pre> |
| 4254 | |
Ben Wagner | e580649 | 2017-11-09 12:08:31 -0500 | [diff] [blame] | 4255 | 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] | 4256 | <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, |
| 4257 | return false, and ignore <a href="#SkPaint_FontMetrics_hasStrikeoutPosition_position">position</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4258 | |
| 4259 | ### Parameters |
| 4260 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4261 | <table> <tr> <td><a name="SkPaint_FontMetrics_hasStrikeoutPosition_position"> <code><strong>position </strong></code> </a></td> <td> |
| 4262 | storage for strikeout <a href="#SkPaint_FontMetrics_hasStrikeoutPosition_position">position</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4263 | </tr> |
| 4264 | </table> |
| 4265 | |
| 4266 | ### Return Value |
| 4267 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4268 | 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] | 4269 | |
| 4270 | --- |
| 4271 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4272 | <a name="SkPaint_getFontMetrics"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4273 | ## getFontMetrics |
| 4274 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4275 | <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] | 4276 | SkScalar getFontMetrics(FontMetrics* metrics, SkScalar scale = 0) const |
| 4277 | </pre> |
| 4278 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4279 | Returns <a href="#Font_Metrics">Font Metrics</a> associated with <a href="undocumented#Typeface">Typeface</a>. |
| 4280 | 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] | 4281 | descent, ascent, and leading. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4282 | 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>. |
| 4283 | Results are scaled by <a href="#Text_Size">Text Size</a> but does not take into account |
| 4284 | 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>, |
| 4285 | <a href="#Style_Stroke">Style Stroke</a>, and <a href="undocumented#Path_Effect">Path Effect</a>. |
| 4286 | 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] | 4287 | is ignored. |
| 4288 | |
| 4289 | ### Parameters |
| 4290 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4291 | <table> <tr> <td><a name="SkPaint_getFontMetrics_metrics"> <code><strong>metrics </strong></code> </a></td> <td> |
| 4292 | storage for <a href="#Font_Metrics">Font Metrics</a> from <a href="undocumented#Typeface">Typeface</a>; may be nullptr</td> |
| 4293 | </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] | 4294 | additional multiplier for returned values</td> |
| 4295 | </tr> |
| 4296 | </table> |
| 4297 | |
| 4298 | ### Return Value |
| 4299 | |
| 4300 | recommended spacing between lines |
| 4301 | |
| 4302 | ### Example |
| 4303 | |
| 4304 | <div><fiddle-embed name="b899d84caba6607340322d317992d070"></fiddle-embed></div> |
| 4305 | |
| 4306 | ### See Also |
| 4307 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4308 | <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] | 4309 | |
| 4310 | --- |
| 4311 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4312 | <a name="SkPaint_getFontSpacing"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4313 | ## getFontSpacing |
| 4314 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4315 | <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] | 4316 | SkScalar getFontSpacing() const |
| 4317 | </pre> |
| 4318 | |
| 4319 | Returns the recommended spacing between lines: the sum of metrics |
| 4320 | descent, ascent, and leading. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4321 | 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] | 4322 | 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] | 4323 | Returns the same result as <a href="#SkPaint_getFontMetrics">getFontMetrics</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4324 | |
| 4325 | ### Return Value |
| 4326 | |
| 4327 | recommended spacing between lines |
| 4328 | |
| 4329 | ### Example |
| 4330 | |
| 4331 | <div><fiddle-embed name="424741e26e1b174e43087d67422ce14f"> |
| 4332 | |
| 4333 | #### Example Output |
| 4334 | |
| 4335 | ~~~~ |
| 4336 | textSize: 12 fontSpacing: 13.9688 |
| 4337 | textSize: 18 fontSpacing: 20.9531 |
| 4338 | textSize: 24 fontSpacing: 27.9375 |
| 4339 | textSize: 32 fontSpacing: 37.25 |
| 4340 | ~~~~ |
| 4341 | |
| 4342 | </fiddle-embed></div> |
| 4343 | |
| 4344 | --- |
| 4345 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4346 | <a name="SkPaint_getFontBounds"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4347 | ## getFontBounds |
| 4348 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4349 | <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] | 4350 | SkRect getFontBounds() const |
| 4351 | </pre> |
| 4352 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4353 | Returns the union of bounds of all <a href="#Glyph">Glyphs</a>. |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4354 | 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] | 4355 | ignoring <a href="#SkPaint_Hinting">Hinting</a>. Includes <a href="#Text_Size">Text Size</a>, <a href="#Text_Scale_X">Text Scale X</a>, |
| 4356 | 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] | 4357 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4358 | 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] | 4359 | 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] | 4360 | <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] | 4361 | |
| 4362 | ### Return Value |
| 4363 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4364 | union of bounds of all <a href="#Glyph">Glyphs</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4365 | |
| 4366 | ### Example |
| 4367 | |
| 4368 | <div><fiddle-embed name="facaddeec7943bc491988e345e27e65f"> |
| 4369 | |
| 4370 | #### Example Output |
| 4371 | |
| 4372 | ~~~~ |
| 4373 | metrics bounds = { -12.2461, -14.7891, 21.5215, 5.55469 } |
| 4374 | font bounds = { -12.2461, -14.7891, 21.5215, 5.55469 } |
| 4375 | ~~~~ |
| 4376 | |
| 4377 | </fiddle-embed></div> |
| 4378 | |
| 4379 | --- |
| 4380 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4381 | <a name="SkPaint_textToGlyphs"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4382 | ## textToGlyphs |
| 4383 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4384 | <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] | 4385 | int textToGlyphs(const void* text, size_t byteLength, SkGlyphID glyphs[]) const |
| 4386 | </pre> |
| 4387 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4388 | Converts <a href="#SkPaint_textToGlyphs_text">text</a> into glyph indices. |
| 4389 | Returns the number of glyph indices represented by <a href="#SkPaint_textToGlyphs_text">text</a>. |
| 4390 | <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>. |
| 4391 | <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] | 4392 | |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 4393 | 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] | 4394 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4395 | If <a href="#SkPaint_textToGlyphs_byteLength">byteLength</a> equals zero, returns zero. |
| 4396 | 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] | 4397 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4398 | 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] | 4399 | <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] | 4400 | |
| 4401 | ### Parameters |
| 4402 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4403 | <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] | 4404 | character storage encoded with <a href="#Text_Encoding">Text Encoding</a></td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4405 | </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] | 4406 | length of character storage in bytes</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4407 | </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] | 4408 | storage for glyph indices; may be nullptr</td> |
| 4409 | </tr> |
| 4410 | </table> |
| 4411 | |
| 4412 | ### Return Value |
| 4413 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4414 | 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] | 4415 | |
| 4416 | ### Example |
| 4417 | |
| 4418 | <div><fiddle-embed name="343e9471a7f7b5f09abdc3b44983433b"></fiddle-embed></div> |
| 4419 | |
| 4420 | --- |
| 4421 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4422 | <a name="SkPaint_countText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4423 | ## countText |
| 4424 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4425 | <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] | 4426 | int countText(const void* text, size_t byteLength) const |
| 4427 | </pre> |
| 4428 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4429 | Returns the number of <a href="#Glyph">Glyphs</a> in <a href="#SkPaint_countText_text">text</a>. |
| 4430 | Uses <a href="#Text_Encoding">Text Encoding</a> to count the <a href="#Glyph">Glyphs</a>. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4431 | Returns the same result as <a href="#SkPaint_textToGlyphs">textToGlyphs</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4432 | |
| 4433 | ### Parameters |
| 4434 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4435 | <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] | 4436 | character storage encoded with <a href="#Text_Encoding">Text Encoding</a></td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4437 | </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] | 4438 | length of character storage in bytes</td> |
| 4439 | </tr> |
| 4440 | </table> |
| 4441 | |
| 4442 | ### Return Value |
| 4443 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4444 | number of <a href="#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] | 4445 | |
| 4446 | ### Example |
| 4447 | |
| 4448 | <div><fiddle-embed name="85436c71aab5410767fc688ab0573e09"> |
| 4449 | |
| 4450 | #### Example Output |
| 4451 | |
| 4452 | ~~~~ |
| 4453 | count = 5 |
| 4454 | ~~~~ |
| 4455 | |
| 4456 | </fiddle-embed></div> |
| 4457 | |
| 4458 | --- |
| 4459 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4460 | <a name="SkPaint_containsText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4461 | ## containsText |
| 4462 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4463 | <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] | 4464 | bool containsText(const void* text, size_t byteLength) const |
| 4465 | </pre> |
| 4466 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4467 | 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] | 4468 | 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] | 4469 | <a href="undocumented#Typeface">Typeface</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4470 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4471 | If <a href="#Text_Encoding">Text Encoding</a> is <a href="#SkPaint_kGlyphID_TextEncoding">kGlyphID TextEncoding</a>, |
| 4472 | returns true if all glyph indices in <a href="#SkPaint_containsText_text">text</a> are non-zero; |
| 4473 | 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] | 4474 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4475 | Returns true if <a href="#SkPaint_containsText_byteLength">byteLength</a> is zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4476 | |
| 4477 | ### Parameters |
| 4478 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4479 | <table> <tr> <td><a name="SkPaint_containsText_text"> <code><strong>text </strong></code> </a></td> <td> |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4480 | array of characters or <a href="#Glyph">Glyphs</a></td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4481 | </tr> <tr> <td><a name="SkPaint_containsText_byteLength"> <code><strong>byteLength </strong></code> </a></td> <td> |
| 4482 | 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] | 4483 | </tr> |
| 4484 | </table> |
| 4485 | |
| 4486 | ### Return Value |
| 4487 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4488 | 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] | 4489 | |
| 4490 | ### Example |
| 4491 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4492 | <div><fiddle-embed name="9202369019552f09cd4bec7f3046fee4"><div><a href="#SkPaint_containsText">containsText</a> succeeds for degree symbol, but cannot find a glyph index |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4493 | corresponding to the Unicode surrogate code point.</div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4494 | |
| 4495 | #### Example Output |
| 4496 | |
| 4497 | ~~~~ |
| 4498 | 0x00b0 == has char |
| 4499 | 0xd800 != has char |
| 4500 | ~~~~ |
| 4501 | |
| 4502 | </fiddle-embed></div> |
| 4503 | |
| 4504 | ### Example |
| 4505 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4506 | <div><fiddle-embed name="904227febfd1c2e264955da0ef66da73"><div><a href="#SkPaint_containsText">containsText</a> returns true that glyph index is greater than zero, not |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 4507 | that it corresponds to an entry in <a href="undocumented#Typeface">Typeface</a>.</div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4508 | |
| 4509 | #### Example Output |
| 4510 | |
| 4511 | ~~~~ |
| 4512 | 0x01ff == has glyph |
| 4513 | 0x0000 != has glyph |
| 4514 | 0xffff == has glyph |
| 4515 | ~~~~ |
| 4516 | |
| 4517 | </fiddle-embed></div> |
| 4518 | |
| 4519 | ### See Also |
| 4520 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4521 | <a href="#SkPaint_setTextEncoding">setTextEncoding</a> <a href="undocumented#Typeface">Typeface</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4522 | |
| 4523 | --- |
| 4524 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4525 | <a name="SkPaint_glyphsToUnichars"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4526 | ## glyphsToUnichars |
| 4527 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4528 | <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] | 4529 | void glyphsToUnichars(const SkGlyphID glyphs[], int count, SkUnichar text[]) const |
| 4530 | </pre> |
| 4531 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4532 | Converts <a href="#SkPaint_glyphsToUnichars_glyphs">glyphs</a> into <a href="#SkPaint_glyphsToUnichars_text">text</a> if possible. |
| 4533 | <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] | 4534 | Uses the <a href="undocumented#Typeface">Typeface</a>, but is unaffected |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4535 | 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] | 4536 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4537 | Only supported on platforms that use FreeType as the <a href="#Engine">Font Engine</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4538 | |
| 4539 | ### Parameters |
| 4540 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4541 | <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] | 4542 | array of indices into font</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4543 | </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] | 4544 | length of glyph array</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4545 | </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] | 4546 | storage for character codes, one per glyph</td> |
| 4547 | </tr> |
| 4548 | </table> |
| 4549 | |
| 4550 | ### Example |
| 4551 | |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4552 | <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.</div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4553 | |
| 4554 | --- |
| 4555 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 4556 | ## <a name="Measure_Text"></a> Measure Text |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4557 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4558 | <a name="SkPaint_measureText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4559 | ## measureText |
| 4560 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4561 | <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] | 4562 | SkScalar measureText(const void* text, size_t length, SkRect* bounds) const |
| 4563 | </pre> |
| 4564 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4565 | Returns the advance width of <a href="#SkPaint_measureText_text">text</a> if <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> is clear, |
| 4566 | and the height of <a href="#SkPaint_measureText_text">text</a> if <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> is set. |
| 4567 | The advance is the normal distance to move before drawing additional <a href="#SkPaint_measureText_text">text</a>. |
| 4568 | 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, |
| 4569 | 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 |
| 4570 | <a href="undocumented#Path_Effect">Path Effect</a> to scale the metrics and <a href="#SkPaint_measureText_bounds">bounds</a>. |
| 4571 | Returns the bounding box of <a href="#SkPaint_measureText_text">text</a> if <a href="#SkPaint_measureText_bounds">bounds</a> is not nullptr. |
| 4572 | 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] | 4573 | |
| 4574 | ### Parameters |
| 4575 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4576 | <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] | 4577 | character codes or glyph indices to be measured</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4578 | </tr> <tr> <td><a name="SkPaint_measureText_length"> <code><strong>length </strong></code> </a></td> <td> |
| 4579 | number of bytes of <a href="#SkPaint_measureText_text">text</a> to measure</td> |
| 4580 | </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] | 4581 | returns bounding box relative to (0, 0) if not nullptr</td> |
| 4582 | </tr> |
| 4583 | </table> |
| 4584 | |
| 4585 | ### Return Value |
| 4586 | |
| 4587 | advance width or height |
| 4588 | |
| 4589 | ### Example |
| 4590 | |
| 4591 | <div><fiddle-embed name="06084f609184470135a9cd9ebc5af149"></fiddle-embed></div> |
| 4592 | |
| 4593 | --- |
| 4594 | |
Cary Clark | 2dc84ad | 2018-01-26 12:56:22 -0500 | [diff] [blame] | 4595 | <a name="SkPaint_measureText_2"></a> |
| 4596 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4597 | <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] | 4598 | SkScalar measureText(const void* text, size_t length) const |
| 4599 | </pre> |
| 4600 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4601 | Returns the advance width of <a href="#SkPaint_measureText_2_text">text</a> if <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> is clear, |
| 4602 | and the height of <a href="#SkPaint_measureText_2_text">text</a> if <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> is set. |
| 4603 | The advance is the normal distance to move before drawing additional <a href="#SkPaint_measureText_2_text">text</a>. |
| 4604 | 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, |
| 4605 | and <a href="#Text_Size">Text Size</a> to scale the metrics. |
| 4606 | 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] | 4607 | |
| 4608 | ### Parameters |
| 4609 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4610 | <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] | 4611 | character codes or glyph indices to be measured</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4612 | </tr> <tr> <td><a name="SkPaint_measureText_2_length"> <code><strong>length </strong></code> </a></td> <td> |
| 4613 | 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] | 4614 | </tr> |
| 4615 | </table> |
| 4616 | |
| 4617 | ### Return Value |
| 4618 | |
| 4619 | advance width or height |
| 4620 | |
| 4621 | ### Example |
| 4622 | |
| 4623 | <div><fiddle-embed name="f1139a5ddd17fd47c2f45f6e642cac76"> |
| 4624 | |
| 4625 | #### Example Output |
| 4626 | |
| 4627 | ~~~~ |
| 4628 | default width = 5 |
| 4629 | double width = 10 |
| 4630 | ~~~~ |
| 4631 | |
| 4632 | </fiddle-embed></div> |
| 4633 | |
| 4634 | --- |
| 4635 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4636 | <a name="SkPaint_breakText"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4637 | ## breakText |
| 4638 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4639 | <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] | 4640 | size_t breakText(const void* text, size_t length, SkScalar maxWidth, |
Cary Clark | 73fa972 | 2017-08-29 17:36:51 -0400 | [diff] [blame] | 4641 | SkScalar* measuredWidth = nullptr) const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4642 | </pre> |
| 4643 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4644 | Returns the bytes of <a href="#SkPaint_breakText_text">text</a> that fit within <a href="#SkPaint_breakText_maxWidth">maxWidth</a>. |
| 4645 | 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 |
| 4646 | equal to <a href="#SkPaint_breakText_maxWidth">maxWidth</a>. |
| 4647 | 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 |
| 4648 | equal to <a href="#SkPaint_breakText_maxWidth">maxWidth</a>. |
| 4649 | Measures only while the advance is less than or equal to <a href="#SkPaint_breakText_maxWidth">maxWidth</a>. |
| 4650 | 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. |
| 4651 | 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, |
| 4652 | and <a href="#Text_Size">Text Size</a> to scale the metrics. |
| 4653 | 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] | 4654 | |
| 4655 | ### Parameters |
| 4656 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4657 | <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] | 4658 | character codes or glyph indices to be measured</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4659 | </tr> <tr> <td><a name="SkPaint_breakText_length"> <code><strong>length </strong></code> </a></td> <td> |
| 4660 | number of bytes of <a href="#SkPaint_breakText_text">text</a> to measure</td> |
| 4661 | </tr> <tr> <td><a name="SkPaint_breakText_maxWidth"> <code><strong>maxWidth </strong></code> </a></td> <td> |
| 4662 | advance limit; <a href="#SkPaint_breakText_text">text</a> is measured while advance is less than <a href="#SkPaint_breakText_maxWidth">maxWidth</a></td> |
| 4663 | </tr> <tr> <td><a name="SkPaint_breakText_measuredWidth"> <code><strong>measuredWidth </strong></code> </a></td> <td> |
| 4664 | 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] | 4665 | </tr> |
| 4666 | </table> |
| 4667 | |
| 4668 | ### Return Value |
| 4669 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4670 | 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] | 4671 | |
| 4672 | ### Example |
| 4673 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 4674 | <div><fiddle-embed name="fd0033470ccbd5c7059670fdbf96cffc"><div><a href="undocumented#Line">Line</a> under "" shows desired width, shorter than available characters. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4675 | <a href="undocumented#Line">Line</a> under "" shows measured width after breaking <a href="#SkPaint_breakText_text">text</a>.</div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4676 | |
| 4677 | --- |
| 4678 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4679 | <a name="SkPaint_getTextWidths"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4680 | ## getTextWidths |
| 4681 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4682 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
| 4683 | 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] | 4684 | </pre> |
| 4685 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4686 | Retrieves the advance and <a href="#SkPaint_getTextWidths_bounds">bounds</a> for each glyph in <a href="#SkPaint_getTextWidths_text">text</a>, and returns |
| 4687 | the glyph count in <a href="#SkPaint_getTextWidths_text">text</a>. |
| 4688 | Both <a href="#SkPaint_getTextWidths_widths">widths</a> and <a href="#SkPaint_getTextWidths_bounds">bounds</a> may be nullptr. |
| 4689 | 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] | 4690 | 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] | 4691 | If <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> is clear, <a href="#SkPaint_getTextWidths_widths">widths</a> returns the horizontal advance. |
| 4692 | If <a href="#SkPaint_kVerticalText_Flag">kVerticalText Flag</a> is set, <a href="#SkPaint_getTextWidths_widths">widths</a> returns the vertical advance. |
| 4693 | 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, |
| 4694 | 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>. |
| 4695 | Does not scale the advance by <a href="#Fake_Bold">Fake Bold</a> or <a href="undocumented#Path_Effect">Path Effect</a>. |
| 4696 | 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] | 4697 | |
| 4698 | ### Parameters |
| 4699 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4700 | <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] | 4701 | character codes or glyph indices to be measured</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4702 | </tr> <tr> <td><a name="SkPaint_getTextWidths_byteLength"> <code><strong>byteLength </strong></code> </a></td> <td> |
| 4703 | number of bytes of <a href="#SkPaint_getTextWidths_text">text</a> to measure</td> |
| 4704 | </tr> <tr> <td><a name="SkPaint_getTextWidths_widths"> <code><strong>widths </strong></code> </a></td> <td> |
| 4705 | returns <a href="#SkPaint_getTextWidths_text">text</a> advances for each glyph; may be nullptr</td> |
| 4706 | </tr> <tr> <td><a name="SkPaint_getTextWidths_bounds"> <code><strong>bounds </strong></code> </a></td> <td> |
| 4707 | 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] | 4708 | </tr> |
| 4709 | </table> |
| 4710 | |
| 4711 | ### Return Value |
| 4712 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4713 | glyph count in <a href="#SkPaint_getTextWidths_text">text</a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4714 | |
| 4715 | ### Example |
| 4716 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4717 | <div><fiddle-embed name="6b9e101f49e9c2c28755c5bdcef64dfb"><div>Bounds of <a href="#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 | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4718 | The underlines show the <a href="#SkPaint_getTextWidths_text">text</a> advance, spaced to keep them distinct.</div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4719 | |
| 4720 | --- |
| 4721 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 4722 | ## <a name="Text_Path"></a> Text Path |
| 4723 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4724 | <a href="#Text_Path">Text Path</a> describes the geometry of <a href="#Glyph">Glyphs</a> used to draw text. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4725 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4726 | <a name="SkPaint_getTextPath"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4727 | ## getTextPath |
| 4728 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4729 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
| 4730 | 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] | 4731 | </pre> |
| 4732 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4733 | Returns the geometry as <a href="SkPath_Reference#Path">Path</a> equivalent to the drawn <a href="#SkPaint_getTextPath_text">text</a>. |
| 4734 | 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, |
| 4735 | 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. |
| 4736 | All of the glyph paths are stored in <a href="#SkPaint_getTextPath_path">path</a>. |
| 4737 | 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] | 4738 | |
| 4739 | ### Parameters |
| 4740 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4741 | <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] | 4742 | character codes or glyph indices</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4743 | </tr> <tr> <td><a name="SkPaint_getTextPath_length"> <code><strong>length </strong></code> </a></td> <td> |
| 4744 | number of bytes of <a href="#SkPaint_getTextPath_text">text</a></td> |
| 4745 | </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] | 4746 | <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] | 4747 | </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] | 4748 | <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] | 4749 | </tr> <tr> <td><a name="SkPaint_getTextPath_path"> <code><strong>path </strong></code> </a></td> <td> |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4750 | geometry of the <a href="#Glyph">Glyphs</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4751 | </tr> |
| 4752 | </table> |
| 4753 | |
| 4754 | ### Example |
| 4755 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 4756 | <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 | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4757 | the offset location. The result is rendered with one draw call.</div></fiddle-embed></div> |
| 4758 | |
| 4759 | --- |
| 4760 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4761 | <a name="SkPaint_getPosTextPath"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4762 | ## getPosTextPath |
| 4763 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4764 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
| 4765 | 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] | 4766 | </pre> |
| 4767 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4768 | Returns the geometry as <a href="SkPath_Reference#Path">Path</a> equivalent to the drawn <a href="#SkPaint_getPosTextPath_text">text</a>. |
| 4769 | 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, |
| 4770 | 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. |
| 4771 | All of the glyph paths are stored in <a href="#SkPaint_getPosTextPath_path">path</a>. |
| 4772 | 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>. |
| 4773 | <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] | 4774 | |
| 4775 | ### Parameters |
| 4776 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4777 | <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] | 4778 | character codes or glyph indices</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4779 | </tr> <tr> <td><a name="SkPaint_getPosTextPath_length"> <code><strong>length </strong></code> </a></td> <td> |
| 4780 | number of bytes of <a href="#SkPaint_getPosTextPath_text">text</a></td> |
| 4781 | </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] | 4782 | positions of each glyph</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4783 | </tr> <tr> <td><a name="SkPaint_getPosTextPath_path"> <code><strong>path </strong></code> </a></td> <td> |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4784 | geometry of the <a href="#Glyph">Glyphs</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4785 | </tr> |
| 4786 | </table> |
| 4787 | |
| 4788 | ### Example |
| 4789 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4790 | <div><fiddle-embed name="7f27c93472aa99a7542fb3493076f072"><div>Simplifies three <a href="#Glyph">Glyphs</a> to eliminate overlaps, and strokes the result.</div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4791 | |
| 4792 | --- |
| 4793 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 4794 | ## <a name="Text_Intercepts"></a> Text Intercepts |
| 4795 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4796 | <a href="#Text_Intercepts">Text Intercepts</a> describe the intersection of drawn text <a href="#Glyph">Glyphs</a> with a pair |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4797 | 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] | 4798 | underline that skips Descenders. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4799 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4800 | <a name="SkPaint_getTextIntercepts"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4801 | ## getTextIntercepts |
| 4802 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4803 | <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] | 4804 | int getTextIntercepts(const void* text, size_t length, SkScalar x, SkScalar y, |
| 4805 | const SkScalar bounds[2], SkScalar* intervals) const |
| 4806 | </pre> |
| 4807 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4808 | Returns the number of <a href="#SkPaint_getTextIntercepts_intervals">intervals</a> that intersect <a href="#SkPaint_getTextIntercepts_bounds">bounds</a>. |
| 4809 | <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 | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4810 | The return count is zero or a multiple of two, and is at most twice the number of <a href="#Glyph">Glyphs</a> in |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4811 | the string. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4812 | 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, |
| 4813 | 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. |
| 4814 | 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>. |
| 4815 | Pass nullptr for <a href="#SkPaint_getTextIntercepts_intervals">intervals</a> to determine the size of the interval array. |
| 4816 | <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] | 4817 | |
| 4818 | ### Parameters |
| 4819 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4820 | <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] | 4821 | character codes or glyph indices</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4822 | </tr> <tr> <td><a name="SkPaint_getTextIntercepts_length"> <code><strong>length </strong></code> </a></td> <td> |
| 4823 | number of bytes of <a href="#SkPaint_getTextIntercepts_text">text</a></td> |
| 4824 | </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] | 4825 | <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] | 4826 | </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] | 4827 | <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] | 4828 | </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] | 4829 | lower and upper line parallel to the advance</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4830 | </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] | 4831 | returned intersections; may be nullptr</td> |
| 4832 | </tr> |
| 4833 | </table> |
| 4834 | |
| 4835 | ### Return Value |
| 4836 | |
| 4837 | number of intersections; may be zero |
| 4838 | |
| 4839 | ### Example |
| 4840 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4841 | <div><fiddle-embed name="2a0b80ed20d193c688085b79deb5bdc9"><div>Underline uses intercepts to draw on either side of the glyph Descender.</div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4842 | |
| 4843 | --- |
| 4844 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4845 | <a name="SkPaint_getPosTextIntercepts"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4846 | ## getPosTextIntercepts |
| 4847 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4848 | <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] | 4849 | int getPosTextIntercepts(const void* text, size_t length, const SkPoint pos[], |
| 4850 | const SkScalar bounds[2], SkScalar* intervals) const |
| 4851 | </pre> |
| 4852 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4853 | Returns the number of <a href="#SkPaint_getPosTextIntercepts_intervals">intervals</a> that intersect <a href="#SkPaint_getPosTextIntercepts_bounds">bounds</a>. |
| 4854 | <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 | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4855 | The return count is zero or a multiple of two, and is at most twice the number of <a href="#Glyph">Glyphs</a> in |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4856 | the string. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4857 | 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, |
| 4858 | 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. |
| 4859 | 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>. |
| 4860 | Pass nullptr for <a href="#SkPaint_getPosTextIntercepts_intervals">intervals</a> to determine the size of the interval array. |
| 4861 | <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] | 4862 | |
| 4863 | ### Parameters |
| 4864 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4865 | <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] | 4866 | character codes or glyph indices</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4867 | </tr> <tr> <td><a name="SkPaint_getPosTextIntercepts_length"> <code><strong>length </strong></code> </a></td> <td> |
| 4868 | number of bytes of <a href="#SkPaint_getPosTextIntercepts_text">text</a></td> |
| 4869 | </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] | 4870 | positions of each glyph</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4871 | </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] | 4872 | lower and upper line parallel to the advance</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4873 | </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] | 4874 | returned intersections; may be nullptr</td> |
| 4875 | </tr> |
| 4876 | </table> |
| 4877 | |
| 4878 | ### Return Value |
| 4879 | |
Cary Clark | a523d2d | 2017-08-30 08:58:10 -0400 | [diff] [blame] | 4880 | number of intersections; may be zero |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4881 | |
| 4882 | ### Example |
| 4883 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4884 | <div><fiddle-embed name="98b2dfc552d0540a7c041fe7a2839bd7"><div><a href="undocumented#Text">Text</a> intercepts draw on either side of, but not inside, <a href="#Glyph">Glyphs</a> in a run.</div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4885 | |
| 4886 | --- |
| 4887 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4888 | <a name="SkPaint_getPosTextHIntercepts"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4889 | ## getPosTextHIntercepts |
| 4890 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4891 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
| 4892 | int getPosTextHIntercepts(const void* text, size_t length, const SkScalar xpos[], SkScalar constY, |
| 4893 | const SkScalar bounds[2], SkScalar* intervals) const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4894 | </pre> |
| 4895 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4896 | Returns the number of <a href="#SkPaint_getPosTextHIntercepts_intervals">intervals</a> that intersect <a href="#SkPaint_getPosTextHIntercepts_bounds">bounds</a>. |
| 4897 | <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 | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4898 | The return count is zero or a multiple of two, and is at most twice the number of <a href="#Glyph">Glyphs</a> in |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4899 | the string. |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4900 | 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, |
| 4901 | 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. |
| 4902 | 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>. |
| 4903 | Pass nullptr for <a href="#SkPaint_getPosTextHIntercepts_intervals">intervals</a> to determine the size of the interval array. |
| 4904 | <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] | 4905 | |
| 4906 | ### Parameters |
| 4907 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4908 | <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] | 4909 | character codes or glyph indices</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4910 | </tr> <tr> <td><a name="SkPaint_getPosTextHIntercepts_length"> <code><strong>length </strong></code> </a></td> <td> |
| 4911 | number of bytes of <a href="#SkPaint_getPosTextHIntercepts_text">text</a></td> |
| 4912 | </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] | 4913 | positions of each glyph in x</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4914 | </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] | 4915 | position of each glyph in y</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4916 | </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] | 4917 | lower and upper line parallel to the advance</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4918 | </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] | 4919 | returned intersections; may be nullptr</td> |
| 4920 | </tr> |
| 4921 | </table> |
| 4922 | |
| 4923 | ### Return Value |
| 4924 | |
| 4925 | number of intersections; may be zero |
| 4926 | |
| 4927 | ### Example |
| 4928 | |
Cary Clark | 4c06f5e | 2017-08-04 12:48:24 -0400 | [diff] [blame] | 4929 | <div><fiddle-embed name="dc9851c43acc3716aca8c9a4d40d452d"><div><a href="undocumented#Text">Text</a> intercepts do not take stroke thickness into consideration.</div></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4930 | |
| 4931 | --- |
| 4932 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4933 | <a name="SkPaint_getTextBlobIntercepts"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4934 | ## getTextBlobIntercepts |
| 4935 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4936 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
| 4937 | int getTextBlobIntercepts(const SkTextBlob* blob, const SkScalar bounds[2], SkScalar* intervals) const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4938 | </pre> |
| 4939 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4940 | Returns the number of <a href="#SkPaint_getTextBlobIntercepts_intervals">intervals</a> that intersect <a href="#SkPaint_getTextBlobIntercepts_bounds">bounds</a>. |
| 4941 | <a href="#SkPaint_getTextBlobIntercepts_bounds">bounds</a> describes a pair of lines parallel to the text advance. |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4942 | The return count is zero or a multiple of two, and is at most twice the number of <a href="#Glyph">Glyphs</a> in |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 4943 | the string. |
Cary Clark | 3cd22cc | 2017-12-01 11:49:58 -0500 | [diff] [blame] | 4944 | Uses <a href="undocumented#Typeface">Typeface</a> to get the glyph paths, |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4945 | 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] | 4946 | 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] | 4947 | <a href="#Text_Encoding">Text Encoding</a> must be set to <a href="#SkPaint_kGlyphID_TextEncoding">SkPaint::kGlyphID TextEncoding</a>. |
| 4948 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4949 | Pass nullptr for <a href="#SkPaint_getTextBlobIntercepts_intervals">intervals</a> to determine the size of the interval array. |
| 4950 | <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] | 4951 | |
| 4952 | ### Parameters |
| 4953 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4954 | <table> <tr> <td><a name="SkPaint_getTextBlobIntercepts_blob"> <code><strong>blob </strong></code> </a></td> <td> |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4955 | <a href="#Glyph">Glyphs</a>, positions, and text paint attributes</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4956 | </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] | 4957 | lower and upper line parallel to the advance</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4958 | </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] | 4959 | returned intersections; may be nullptr</td> |
| 4960 | </tr> |
| 4961 | </table> |
| 4962 | |
| 4963 | ### Return Value |
| 4964 | |
| 4965 | number of intersections; may be zero |
| 4966 | |
| 4967 | ### Example |
| 4968 | |
Cary Clark | 3cd22cc | 2017-12-01 11:49:58 -0500 | [diff] [blame] | 4969 | <div><fiddle-embed name="71959a66b2290d70003887c0de339266"></fiddle-embed></div> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4970 | |
| 4971 | --- |
| 4972 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 4973 | <a name="SkPaint_nothingToDraw"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4974 | ## nothingToDraw |
| 4975 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 4976 | <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] | 4977 | bool nothingToDraw() const |
| 4978 | </pre> |
| 4979 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4980 | Returns true if <a href="#Paint">Paint</a> prevents all drawing; |
| 4981 | 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] | 4982 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 4983 | Returns true if, for example, <a href="undocumented#Blend_Mode">Blend Mode</a> combined with <a href="#Alpha">Color Alpha</a> computes a |
| 4984 | new <a href="#Alpha">Alpha</a> of zero. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4985 | |
| 4986 | ### Return Value |
| 4987 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 4988 | true if <a href="#Paint">Paint</a> prevents all drawing |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 4989 | |
| 4990 | ### Example |
| 4991 | |
| 4992 | <div><fiddle-embed name="fc5a771b915ac341f56554f01d282831"> |
| 4993 | |
| 4994 | #### Example Output |
| 4995 | |
| 4996 | ~~~~ |
| 4997 | initial nothing to draw: false |
| 4998 | blend dst nothing to draw: true |
| 4999 | blend src over nothing to draw: false |
| 5000 | alpha 0 nothing to draw: true |
| 5001 | ~~~~ |
| 5002 | |
| 5003 | </fiddle-embed></div> |
| 5004 | |
| 5005 | --- |
| 5006 | |
Cary Clark | 08895c4 | 2018-02-01 09:37:32 -0500 | [diff] [blame] | 5007 | ## <a name="Fast_Bounds"></a> Fast Bounds |
| 5008 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5009 | <a href="#Fast_Bounds">Fast Bounds</a> methods conservatively outset a drawing bounds by additional area |
| 5010 | <a href="#Paint">Paint</a> may draw to. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5011 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 5012 | <a name="SkPaint_canComputeFastBounds"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5013 | ## canComputeFastBounds |
| 5014 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 5015 | <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] | 5016 | bool canComputeFastBounds() const |
| 5017 | </pre> |
| 5018 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5019 | Returns true if <a href="#Paint">Paint</a> does not include elements requiring extensive computation |
| 5020 | 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] | 5021 | always returns false. |
| 5022 | |
| 5023 | ### Return Value |
| 5024 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5025 | 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] | 5026 | |
| 5027 | --- |
| 5028 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 5029 | <a name="SkPaint_computeFastBounds"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5030 | ## computeFastBounds |
| 5031 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 5032 | <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] | 5033 | const SkRect& computeFastBounds(const SkRect& orig, SkRect* storage) const |
| 5034 | </pre> |
| 5035 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5036 | 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] | 5037 | 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] | 5038 | 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] | 5039 | parameter. It returns the adjusted bounds that can then be used |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5040 | for <a href="#SkCanvas_quickReject">SkCanvas::quickReject</a> tests. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5041 | |
Cary Clark | bc5697d | 2017-10-04 14:31:33 -0400 | [diff] [blame] | 5042 | 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] | 5043 | 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] | 5044 | 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] | 5045 | <a href="SkRect_Reference#Rect">Rect</a>. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5046 | |
| 5047 | ### Parameters |
| 5048 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5049 | <table> <tr> <td><a name="SkPaint_computeFastBounds_orig"> <code><strong>orig </strong></code> </a></td> <td> |
| 5050 | geometry modified by <a href="#Paint">Paint</a> when drawn</td> |
| 5051 | </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] | 5052 | computed bounds of geometry; may not be nullptr</td> |
| 5053 | </tr> |
| 5054 | </table> |
| 5055 | |
| 5056 | ### Return Value |
| 5057 | |
| 5058 | fast computed bounds |
| 5059 | |
| 5060 | --- |
| 5061 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 5062 | <a name="SkPaint_computeFastStrokeBounds"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5063 | ## computeFastStrokeBounds |
| 5064 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 5065 | <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] | 5066 | const SkRect& computeFastStrokeBounds(const SkRect& orig, SkRect* storage) const |
| 5067 | </pre> |
| 5068 | |
| 5069 | ### Parameters |
| 5070 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5071 | <table> <tr> <td><a name="SkPaint_computeFastStrokeBounds_orig"> <code><strong>orig </strong></code> </a></td> <td> |
| 5072 | geometry modified by <a href="#Paint">Paint</a> when drawn</td> |
| 5073 | </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] | 5074 | computed bounds of geometry</td> |
| 5075 | </tr> |
| 5076 | </table> |
| 5077 | |
| 5078 | ### Return Value |
| 5079 | |
| 5080 | fast computed bounds |
| 5081 | |
| 5082 | --- |
| 5083 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 5084 | <a name="SkPaint_doComputeFastBounds"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5085 | ## doComputeFastBounds |
| 5086 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 5087 | <pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0"> |
| 5088 | const SkRect& doComputeFastBounds(const SkRect& orig, SkRect* storage, Style style) const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5089 | </pre> |
| 5090 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 5091 | Computes the bounds, overriding the <a href="#Paint">Paint</a> <a href="#SkPaint_Style">Style</a>. This can be used to |
| 5092 | account for additional width required by stroking <a href="#SkPaint_doComputeFastBounds_orig">orig</a>, without |
| 5093 | altering <a href="#SkPaint_Style">Style</a> set to fill. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5094 | |
| 5095 | ### Parameters |
| 5096 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5097 | <table> <tr> <td><a name="SkPaint_doComputeFastBounds_orig"> <code><strong>orig </strong></code> </a></td> <td> |
| 5098 | geometry modified by <a href="#Paint">Paint</a> when drawn</td> |
| 5099 | </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] | 5100 | computed bounds of geometry</td> |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5101 | </tr> <tr> <td><a name="SkPaint_doComputeFastBounds_style"> <code><strong>style </strong></code> </a></td> <td> |
| 5102 | overrides <a href="#SkPaint_Style">Style</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5103 | </tr> |
| 5104 | </table> |
| 5105 | |
| 5106 | ### Return Value |
| 5107 | |
| 5108 | fast computed bounds |
| 5109 | |
| 5110 | --- |
| 5111 | |
Cary Clark | 493df1f | 2017-08-25 13:14:33 -0400 | [diff] [blame] | 5112 | <a name="SkPaint_toString"></a> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5113 | ## toString |
| 5114 | |
Cary Clark | a560c47 | 2017-11-27 10:44:06 -0500 | [diff] [blame] | 5115 | <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] | 5116 | void toString(SkString* str) const |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5117 | </pre> |
| 5118 | |
Cary Clark | ce10124 | 2017-09-01 15:51:02 -0400 | [diff] [blame] | 5119 | Creates string representation of <a href="#Paint">Paint</a>. The representation is read by |
| 5120 | internal debugging tools. The interface and implementation may be |
Cary Clark | 7cfcbca | 2018-01-04 16:11:51 -0500 | [diff] [blame] | 5121 | suppressed by defining SK_IGNORE_TO_STRING. |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5122 | |
| 5123 | ### Parameters |
| 5124 | |
Cary Clark | 8cc16c7 | 2017-08-25 11:51:49 -0400 | [diff] [blame] | 5125 | <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] | 5126 | storage for string representation of <a href="#Paint">Paint</a></td> |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5127 | </tr> |
| 5128 | </table> |
| 5129 | |
| 5130 | ### Example |
| 5131 | |
| 5132 | <div><fiddle-embed name="5670c04b4562908169a776c48c92d104"> |
| 5133 | |
| 5134 | #### Example Output |
| 5135 | |
| 5136 | ~~~~ |
| 5137 | text size = 12 |
| 5138 | ~~~~ |
| 5139 | |
| 5140 | </fiddle-embed></div> |
| 5141 | |
Cary Clark | 2ade997 | 2017-11-02 17:49:34 -0400 | [diff] [blame] | 5142 | ### See Also |
| 5143 | |
| 5144 | <a href="#SkPathEffect_toString">SkPathEffect::toString</a> <a href="#SkMaskFilter_toString">SkMaskFilter::toString</a> <a href="#SkColorFilter_toString">SkColorFilter::toString</a> <a href="#SkImageFilter_toString">SkImageFilter::toString</a> |
| 5145 | |
Cary Clark | 12799e1 | 2017-07-28 15:18:29 -0400 | [diff] [blame] | 5146 | --- |
| 5147 | |