epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright 2006 The Android Open Source Project |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
| 8 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 9 | #include "SkPaint.h" |
reed@google.com | b0a34d8 | 2012-07-11 19:57:55 +0000 | [diff] [blame] | 10 | #include "SkAnnotation.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 11 | #include "SkColorFilter.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 12 | #include "SkFontHost.h" |
reed@google.com | 15356a6 | 2011-11-03 19:29:08 +0000 | [diff] [blame] | 13 | #include "SkImageFilter.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 14 | #include "SkMaskFilter.h" |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 15 | #include "SkMaskGamma.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 16 | #include "SkPathEffect.h" |
| 17 | #include "SkRasterizer.h" |
| 18 | #include "SkShader.h" |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 19 | #include "SkScalar.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 20 | #include "SkScalerContext.h" |
| 21 | #include "SkStroke.h" |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 22 | #include "SkTextFormatParams.h" |
reed@google.com | e691376 | 2012-08-07 15:19:47 +0000 | [diff] [blame] | 23 | #include "SkTextToPathIter.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 24 | #include "SkTypeface.h" |
| 25 | #include "SkXfermode.h" |
| 26 | #include "SkAutoKern.h" |
djsollen@google.com | 60abb07 | 2012-02-15 18:49:15 +0000 | [diff] [blame] | 27 | #include "SkGlyphCache.h" |
reed@google.com | aefdd06 | 2012-02-29 13:03:00 +0000 | [diff] [blame] | 28 | #include "SkPaintDefaults.h" |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 29 | #include "SkOrderedReadBuffer.h" |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 30 | #include "SkOrderedWriteBuffer.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 31 | |
reed@google.com | a323787 | 2011-07-05 19:20:48 +0000 | [diff] [blame] | 32 | // define this to get a printf for out-of-range parameter in setters |
| 33 | // e.g. setTextSize(-1) |
| 34 | //#define SK_REPORT_API_RANGE_CHECK |
| 35 | |
djsollen@google.com | 56c6977 | 2011-11-08 19:00:26 +0000 | [diff] [blame] | 36 | #ifdef SK_BUILD_FOR_ANDROID |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 37 | #define GEN_ID_INC fGenerationID++ |
| 38 | #define GEN_ID_INC_EVAL(expression) if (expression) { fGenerationID++; } |
| 39 | #else |
| 40 | #define GEN_ID_INC |
| 41 | #define GEN_ID_INC_EVAL(expression) |
| 42 | #endif |
| 43 | |
reed@android.com | a3122b9 | 2009-08-13 20:38:25 +0000 | [diff] [blame] | 44 | SkPaint::SkPaint() { |
| 45 | // since we may have padding, we zero everything so that our memcmp() call |
| 46 | // in operator== will work correctly. |
| 47 | // with this, we can skip 0 and null individual initializations |
| 48 | sk_bzero(this, sizeof(*this)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 49 | |
reed@android.com | a3122b9 | 2009-08-13 20:38:25 +0000 | [diff] [blame] | 50 | #if 0 // not needed with the bzero call above |
| 51 | fTypeface = NULL; |
| 52 | fTextSkewX = 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 53 | fPathEffect = NULL; |
| 54 | fShader = NULL; |
| 55 | fXfermode = NULL; |
| 56 | fMaskFilter = NULL; |
| 57 | fColorFilter = NULL; |
| 58 | fRasterizer = NULL; |
| 59 | fLooper = NULL; |
reed@google.com | 15356a6 | 2011-11-03 19:29:08 +0000 | [diff] [blame] | 60 | fImageFilter = NULL; |
reed@google.com | b0a34d8 | 2012-07-11 19:57:55 +0000 | [diff] [blame] | 61 | fAnnotation = NULL; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 62 | fWidth = 0; |
reed@android.com | a3122b9 | 2009-08-13 20:38:25 +0000 | [diff] [blame] | 63 | #endif |
| 64 | |
reed@google.com | aefdd06 | 2012-02-29 13:03:00 +0000 | [diff] [blame] | 65 | fTextSize = SkPaintDefaults_TextSize; |
reed@android.com | a3122b9 | 2009-08-13 20:38:25 +0000 | [diff] [blame] | 66 | fTextScaleX = SK_Scalar1; |
| 67 | fColor = SK_ColorBLACK; |
reed@google.com | aefdd06 | 2012-02-29 13:03:00 +0000 | [diff] [blame] | 68 | fMiterLimit = SkPaintDefaults_MiterLimit; |
| 69 | fFlags = SkPaintDefaults_Flags; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 70 | fCapType = kDefault_Cap; |
| 71 | fJoinType = kDefault_Join; |
| 72 | fTextAlign = kLeft_Align; |
| 73 | fStyle = kFill_Style; |
| 74 | fTextEncoding = kUTF8_TextEncoding; |
reed@google.com | aefdd06 | 2012-02-29 13:03:00 +0000 | [diff] [blame] | 75 | fHinting = SkPaintDefaults_Hinting; |
reed@google.com | b0a34d8 | 2012-07-11 19:57:55 +0000 | [diff] [blame] | 76 | fPrivFlags = 0; |
djsollen@google.com | 56c6977 | 2011-11-08 19:00:26 +0000 | [diff] [blame] | 77 | #ifdef SK_BUILD_FOR_ANDROID |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 78 | fGenerationID = 0; |
| 79 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 80 | } |
| 81 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 82 | SkPaint::SkPaint(const SkPaint& src) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 83 | memcpy(this, &src, sizeof(src)); |
| 84 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 85 | SkSafeRef(fTypeface); |
| 86 | SkSafeRef(fPathEffect); |
| 87 | SkSafeRef(fShader); |
| 88 | SkSafeRef(fXfermode); |
| 89 | SkSafeRef(fMaskFilter); |
| 90 | SkSafeRef(fColorFilter); |
| 91 | SkSafeRef(fRasterizer); |
| 92 | SkSafeRef(fLooper); |
reed@google.com | 15356a6 | 2011-11-03 19:29:08 +0000 | [diff] [blame] | 93 | SkSafeRef(fImageFilter); |
reed@google.com | b0a34d8 | 2012-07-11 19:57:55 +0000 | [diff] [blame] | 94 | SkSafeRef(fAnnotation); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 95 | } |
| 96 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 97 | SkPaint::~SkPaint() { |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 98 | SkSafeUnref(fTypeface); |
| 99 | SkSafeUnref(fPathEffect); |
| 100 | SkSafeUnref(fShader); |
| 101 | SkSafeUnref(fXfermode); |
| 102 | SkSafeUnref(fMaskFilter); |
| 103 | SkSafeUnref(fColorFilter); |
| 104 | SkSafeUnref(fRasterizer); |
| 105 | SkSafeUnref(fLooper); |
reed@google.com | 15356a6 | 2011-11-03 19:29:08 +0000 | [diff] [blame] | 106 | SkSafeUnref(fImageFilter); |
reed@google.com | b0a34d8 | 2012-07-11 19:57:55 +0000 | [diff] [blame] | 107 | SkSafeUnref(fAnnotation); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 108 | } |
| 109 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 110 | SkPaint& SkPaint::operator=(const SkPaint& src) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 111 | SkASSERT(&src); |
| 112 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 113 | SkSafeRef(src.fTypeface); |
| 114 | SkSafeRef(src.fPathEffect); |
| 115 | SkSafeRef(src.fShader); |
| 116 | SkSafeRef(src.fXfermode); |
| 117 | SkSafeRef(src.fMaskFilter); |
| 118 | SkSafeRef(src.fColorFilter); |
| 119 | SkSafeRef(src.fRasterizer); |
| 120 | SkSafeRef(src.fLooper); |
reed@google.com | 15356a6 | 2011-11-03 19:29:08 +0000 | [diff] [blame] | 121 | SkSafeRef(src.fImageFilter); |
reed@google.com | b0a34d8 | 2012-07-11 19:57:55 +0000 | [diff] [blame] | 122 | SkSafeRef(src.fAnnotation); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 123 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 124 | SkSafeUnref(fTypeface); |
| 125 | SkSafeUnref(fPathEffect); |
| 126 | SkSafeUnref(fShader); |
| 127 | SkSafeUnref(fXfermode); |
| 128 | SkSafeUnref(fMaskFilter); |
| 129 | SkSafeUnref(fColorFilter); |
| 130 | SkSafeUnref(fRasterizer); |
| 131 | SkSafeUnref(fLooper); |
reed@google.com | 15356a6 | 2011-11-03 19:29:08 +0000 | [diff] [blame] | 132 | SkSafeUnref(fImageFilter); |
reed@google.com | b0a34d8 | 2012-07-11 19:57:55 +0000 | [diff] [blame] | 133 | SkSafeUnref(fAnnotation); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 134 | |
djsollen@google.com | 56c6977 | 2011-11-08 19:00:26 +0000 | [diff] [blame] | 135 | #ifdef SK_BUILD_FOR_ANDROID |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 136 | uint32_t oldGenerationID = fGenerationID; |
| 137 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 138 | memcpy(this, &src, sizeof(src)); |
djsollen@google.com | 56c6977 | 2011-11-08 19:00:26 +0000 | [diff] [blame] | 139 | #ifdef SK_BUILD_FOR_ANDROID |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 140 | fGenerationID = oldGenerationID + 1; |
| 141 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 142 | |
| 143 | return *this; |
| 144 | } |
| 145 | |
reed@google.com | b530ef5 | 2011-07-20 19:55:42 +0000 | [diff] [blame] | 146 | bool operator==(const SkPaint& a, const SkPaint& b) { |
djsollen@google.com | b44cd65 | 2011-12-01 17:09:21 +0000 | [diff] [blame] | 147 | #ifdef SK_BUILD_FOR_ANDROID |
| 148 | //assumes that fGenerationID is the last field in the struct |
| 149 | return !memcmp(&a, &b, SK_OFFSETOF(SkPaint, fGenerationID)); |
| 150 | #else |
reed@google.com | b530ef5 | 2011-07-20 19:55:42 +0000 | [diff] [blame] | 151 | return !memcmp(&a, &b, sizeof(a)); |
djsollen@google.com | b44cd65 | 2011-12-01 17:09:21 +0000 | [diff] [blame] | 152 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 153 | } |
| 154 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 155 | void SkPaint::reset() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 156 | SkPaint init; |
| 157 | |
djsollen@google.com | 56c6977 | 2011-11-08 19:00:26 +0000 | [diff] [blame] | 158 | #ifdef SK_BUILD_FOR_ANDROID |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 159 | uint32_t oldGenerationID = fGenerationID; |
| 160 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 161 | *this = init; |
djsollen@google.com | 56c6977 | 2011-11-08 19:00:26 +0000 | [diff] [blame] | 162 | #ifdef SK_BUILD_FOR_ANDROID |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 163 | fGenerationID = oldGenerationID + 1; |
| 164 | #endif |
| 165 | } |
| 166 | |
djsollen@google.com | 56c6977 | 2011-11-08 19:00:26 +0000 | [diff] [blame] | 167 | #ifdef SK_BUILD_FOR_ANDROID |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 168 | uint32_t SkPaint::getGenerationID() const { |
| 169 | return fGenerationID; |
| 170 | } |
| 171 | #endif |
| 172 | |
djsollen@google.com | 60abb07 | 2012-02-15 18:49:15 +0000 | [diff] [blame] | 173 | #ifdef SK_BUILD_FOR_ANDROID |
| 174 | unsigned SkPaint::getBaseGlyphCount(SkUnichar text) const { |
| 175 | SkAutoGlyphCache autoCache(*this, NULL); |
| 176 | SkGlyphCache* cache = autoCache.getCache(); |
| 177 | return cache->getBaseGlyphCount(text); |
| 178 | } |
| 179 | #endif |
| 180 | |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 181 | void SkPaint::setHinting(Hinting hintingLevel) { |
| 182 | GEN_ID_INC_EVAL((unsigned) hintingLevel != fHinting); |
| 183 | fHinting = hintingLevel; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 184 | } |
| 185 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 186 | void SkPaint::setFlags(uint32_t flags) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 187 | GEN_ID_INC_EVAL(fFlags != flags); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 188 | fFlags = flags; |
| 189 | } |
| 190 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 191 | void SkPaint::setAntiAlias(bool doAA) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 192 | this->setFlags(SkSetClearMask(fFlags, doAA, kAntiAlias_Flag)); |
| 193 | } |
| 194 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 195 | void SkPaint::setDither(bool doDither) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 196 | this->setFlags(SkSetClearMask(fFlags, doDither, kDither_Flag)); |
| 197 | } |
| 198 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 199 | void SkPaint::setSubpixelText(bool doSubpixel) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 200 | this->setFlags(SkSetClearMask(fFlags, doSubpixel, kSubpixelText_Flag)); |
| 201 | } |
| 202 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 203 | void SkPaint::setLCDRenderText(bool doLCDRender) { |
agl@chromium.org | 309485b | 2009-07-21 17:41:32 +0000 | [diff] [blame] | 204 | this->setFlags(SkSetClearMask(fFlags, doLCDRender, kLCDRenderText_Flag)); |
| 205 | } |
| 206 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 207 | void SkPaint::setEmbeddedBitmapText(bool doEmbeddedBitmapText) { |
agl@chromium.org | e95c91e | 2010-01-04 18:27:55 +0000 | [diff] [blame] | 208 | this->setFlags(SkSetClearMask(fFlags, doEmbeddedBitmapText, kEmbeddedBitmapText_Flag)); |
| 209 | } |
| 210 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 211 | void SkPaint::setAutohinted(bool useAutohinter) { |
agl@chromium.org | a2c71cb | 2010-06-17 20:49:17 +0000 | [diff] [blame] | 212 | this->setFlags(SkSetClearMask(fFlags, useAutohinter, kAutoHinting_Flag)); |
| 213 | } |
| 214 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 215 | void SkPaint::setLinearText(bool doLinearText) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 216 | this->setFlags(SkSetClearMask(fFlags, doLinearText, kLinearText_Flag)); |
| 217 | } |
| 218 | |
reed@google.com | 830a23e | 2011-11-10 15:20:49 +0000 | [diff] [blame] | 219 | void SkPaint::setVerticalText(bool doVertical) { |
reed@google.com | 830a23e | 2011-11-10 15:20:49 +0000 | [diff] [blame] | 220 | this->setFlags(SkSetClearMask(fFlags, doVertical, kVerticalText_Flag)); |
| 221 | } |
| 222 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 223 | void SkPaint::setUnderlineText(bool doUnderline) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 224 | this->setFlags(SkSetClearMask(fFlags, doUnderline, kUnderlineText_Flag)); |
| 225 | } |
| 226 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 227 | void SkPaint::setStrikeThruText(bool doStrikeThru) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 228 | this->setFlags(SkSetClearMask(fFlags, doStrikeThru, kStrikeThruText_Flag)); |
| 229 | } |
| 230 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 231 | void SkPaint::setFakeBoldText(bool doFakeBold) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 232 | this->setFlags(SkSetClearMask(fFlags, doFakeBold, kFakeBoldText_Flag)); |
| 233 | } |
| 234 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 235 | void SkPaint::setDevKernText(bool doDevKern) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 236 | this->setFlags(SkSetClearMask(fFlags, doDevKern, kDevKernText_Flag)); |
| 237 | } |
| 238 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 239 | void SkPaint::setFilterBitmap(bool doFilter) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 240 | this->setFlags(SkSetClearMask(fFlags, doFilter, kFilterBitmap_Flag)); |
| 241 | } |
| 242 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 243 | void SkPaint::setStyle(Style style) { |
| 244 | if ((unsigned)style < kStyleCount) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 245 | GEN_ID_INC_EVAL((unsigned)style != fStyle); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 246 | fStyle = style; |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 247 | } else { |
reed@google.com | a323787 | 2011-07-05 19:20:48 +0000 | [diff] [blame] | 248 | #ifdef SK_REPORT_API_RANGE_CHECK |
| 249 | SkDebugf("SkPaint::setStyle(%d) out of range\n", style); |
| 250 | #endif |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 251 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 252 | } |
| 253 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 254 | void SkPaint::setColor(SkColor color) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 255 | GEN_ID_INC_EVAL(color != fColor); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 256 | fColor = color; |
| 257 | } |
| 258 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 259 | void SkPaint::setAlpha(U8CPU a) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 260 | this->setColor(SkColorSetARGB(a, SkColorGetR(fColor), |
| 261 | SkColorGetG(fColor), SkColorGetB(fColor))); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 262 | } |
| 263 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 264 | void SkPaint::setARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 265 | this->setColor(SkColorSetARGB(a, r, g, b)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 266 | } |
| 267 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 268 | void SkPaint::setStrokeWidth(SkScalar width) { |
| 269 | if (width >= 0) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 270 | GEN_ID_INC_EVAL(width != fWidth); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 271 | fWidth = width; |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 272 | } else { |
reed@google.com | a323787 | 2011-07-05 19:20:48 +0000 | [diff] [blame] | 273 | #ifdef SK_REPORT_API_RANGE_CHECK |
| 274 | SkDebugf("SkPaint::setStrokeWidth() called with negative value\n"); |
| 275 | #endif |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 276 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 277 | } |
| 278 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 279 | void SkPaint::setStrokeMiter(SkScalar limit) { |
| 280 | if (limit >= 0) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 281 | GEN_ID_INC_EVAL(limit != fMiterLimit); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 282 | fMiterLimit = limit; |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 283 | } else { |
reed@google.com | a323787 | 2011-07-05 19:20:48 +0000 | [diff] [blame] | 284 | #ifdef SK_REPORT_API_RANGE_CHECK |
| 285 | SkDebugf("SkPaint::setStrokeMiter() called with negative value\n"); |
| 286 | #endif |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 287 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 288 | } |
| 289 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 290 | void SkPaint::setStrokeCap(Cap ct) { |
| 291 | if ((unsigned)ct < kCapCount) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 292 | GEN_ID_INC_EVAL((unsigned)ct != fCapType); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 293 | fCapType = SkToU8(ct); |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 294 | } else { |
reed@google.com | a323787 | 2011-07-05 19:20:48 +0000 | [diff] [blame] | 295 | #ifdef SK_REPORT_API_RANGE_CHECK |
| 296 | SkDebugf("SkPaint::setStrokeCap(%d) out of range\n", ct); |
| 297 | #endif |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 298 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 299 | } |
| 300 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 301 | void SkPaint::setStrokeJoin(Join jt) { |
| 302 | if ((unsigned)jt < kJoinCount) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 303 | GEN_ID_INC_EVAL((unsigned)jt != fJoinType); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 304 | fJoinType = SkToU8(jt); |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 305 | } else { |
reed@google.com | a323787 | 2011-07-05 19:20:48 +0000 | [diff] [blame] | 306 | #ifdef SK_REPORT_API_RANGE_CHECK |
| 307 | SkDebugf("SkPaint::setStrokeJoin(%d) out of range\n", jt); |
| 308 | #endif |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 309 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 310 | } |
| 311 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 312 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 313 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 314 | void SkPaint::setTextAlign(Align align) { |
| 315 | if ((unsigned)align < kAlignCount) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 316 | GEN_ID_INC_EVAL((unsigned)align != fTextAlign); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 317 | fTextAlign = SkToU8(align); |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 318 | } else { |
reed@google.com | a323787 | 2011-07-05 19:20:48 +0000 | [diff] [blame] | 319 | #ifdef SK_REPORT_API_RANGE_CHECK |
| 320 | SkDebugf("SkPaint::setTextAlign(%d) out of range\n", align); |
| 321 | #endif |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 322 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 323 | } |
| 324 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 325 | void SkPaint::setTextSize(SkScalar ts) { |
djsollen@google.com | c6f2e7d | 2012-01-04 18:43:43 +0000 | [diff] [blame] | 326 | if (ts >= 0) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 327 | GEN_ID_INC_EVAL(ts != fTextSize); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 328 | fTextSize = ts; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 329 | } else { |
reed@google.com | a323787 | 2011-07-05 19:20:48 +0000 | [diff] [blame] | 330 | #ifdef SK_REPORT_API_RANGE_CHECK |
| 331 | SkDebugf("SkPaint::setTextSize() called with negative value\n"); |
| 332 | #endif |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 333 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 334 | } |
| 335 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 336 | void SkPaint::setTextScaleX(SkScalar scaleX) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 337 | GEN_ID_INC_EVAL(scaleX != fTextScaleX); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 338 | fTextScaleX = scaleX; |
| 339 | } |
| 340 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 341 | void SkPaint::setTextSkewX(SkScalar skewX) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 342 | GEN_ID_INC_EVAL(skewX != fTextSkewX); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 343 | fTextSkewX = skewX; |
| 344 | } |
| 345 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 346 | void SkPaint::setTextEncoding(TextEncoding encoding) { |
| 347 | if ((unsigned)encoding <= kGlyphID_TextEncoding) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 348 | GEN_ID_INC_EVAL((unsigned)encoding != fTextEncoding); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 349 | fTextEncoding = encoding; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 350 | } else { |
reed@google.com | a323787 | 2011-07-05 19:20:48 +0000 | [diff] [blame] | 351 | #ifdef SK_REPORT_API_RANGE_CHECK |
| 352 | SkDebugf("SkPaint::setTextEncoding(%d) out of range\n", encoding); |
| 353 | #endif |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 354 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 355 | } |
| 356 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 357 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 358 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 359 | SkTypeface* SkPaint::setTypeface(SkTypeface* font) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 360 | SkRefCnt_SafeAssign(fTypeface, font); |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 361 | GEN_ID_INC; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 362 | return font; |
| 363 | } |
| 364 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 365 | SkRasterizer* SkPaint::setRasterizer(SkRasterizer* r) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 366 | SkRefCnt_SafeAssign(fRasterizer, r); |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 367 | GEN_ID_INC; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 368 | return r; |
| 369 | } |
| 370 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 371 | SkDrawLooper* SkPaint::setLooper(SkDrawLooper* looper) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 372 | SkRefCnt_SafeAssign(fLooper, looper); |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 373 | GEN_ID_INC; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 374 | return looper; |
| 375 | } |
| 376 | |
reed@google.com | 15356a6 | 2011-11-03 19:29:08 +0000 | [diff] [blame] | 377 | SkImageFilter* SkPaint::setImageFilter(SkImageFilter* imageFilter) { |
| 378 | SkRefCnt_SafeAssign(fImageFilter, imageFilter); |
| 379 | GEN_ID_INC; |
| 380 | return imageFilter; |
| 381 | } |
| 382 | |
reed@google.com | b0a34d8 | 2012-07-11 19:57:55 +0000 | [diff] [blame] | 383 | SkAnnotation* SkPaint::setAnnotation(SkAnnotation* annotation) { |
| 384 | SkRefCnt_SafeAssign(fAnnotation, annotation); |
| 385 | GEN_ID_INC; |
| 386 | |
| 387 | bool isNoDraw = annotation && annotation->isNoDraw(); |
| 388 | fPrivFlags = SkSetClearMask(fPrivFlags, isNoDraw, kNoDrawAnnotation_PrivFlag); |
| 389 | |
| 390 | return annotation; |
| 391 | } |
| 392 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 393 | /////////////////////////////////////////////////////////////////////////////// |
| 394 | |
| 395 | #include "SkGlyphCache.h" |
| 396 | #include "SkUtils.h" |
| 397 | |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 398 | static void DetachDescProc(const SkDescriptor* desc, void* context) { |
| 399 | *((SkGlyphCache**)context) = SkGlyphCache::DetachCache(desc); |
| 400 | } |
| 401 | |
djsollen@google.com | 56c6977 | 2011-11-08 19:00:26 +0000 | [diff] [blame] | 402 | #ifdef SK_BUILD_FOR_ANDROID |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 403 | const SkGlyph& SkPaint::getUnicharMetrics(SkUnichar text) { |
| 404 | SkGlyphCache* cache; |
| 405 | descriptorProc(NULL, DetachDescProc, &cache, true); |
| 406 | |
| 407 | const SkGlyph& glyph = cache->getUnicharMetrics(text); |
| 408 | |
| 409 | SkGlyphCache::AttachCache(cache); |
| 410 | return glyph; |
| 411 | } |
| 412 | |
djsollen@google.com | 60abb07 | 2012-02-15 18:49:15 +0000 | [diff] [blame] | 413 | const SkGlyph& SkPaint::getGlyphMetrics(uint16_t glyphId) { |
| 414 | SkGlyphCache* cache; |
| 415 | descriptorProc(NULL, DetachDescProc, &cache, true); |
| 416 | |
| 417 | const SkGlyph& glyph = cache->getGlyphIDMetrics(glyphId); |
| 418 | |
| 419 | SkGlyphCache::AttachCache(cache); |
| 420 | return glyph; |
| 421 | } |
| 422 | |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 423 | const void* SkPaint::findImage(const SkGlyph& glyph) { |
| 424 | // See ::detachCache() |
| 425 | SkGlyphCache* cache; |
| 426 | descriptorProc(NULL, DetachDescProc, &cache, true); |
| 427 | |
| 428 | const void* image = cache->findImage(glyph); |
| 429 | |
| 430 | SkGlyphCache::AttachCache(cache); |
| 431 | return image; |
| 432 | } |
| 433 | #endif |
| 434 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 435 | int SkPaint::textToGlyphs(const void* textData, size_t byteLength, |
| 436 | uint16_t glyphs[]) const { |
| 437 | if (byteLength == 0) { |
| 438 | return 0; |
| 439 | } |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 440 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 441 | SkASSERT(textData != NULL); |
| 442 | |
| 443 | if (NULL == glyphs) { |
| 444 | switch (this->getTextEncoding()) { |
| 445 | case kUTF8_TextEncoding: |
| 446 | return SkUTF8_CountUnichars((const char*)textData, byteLength); |
| 447 | case kUTF16_TextEncoding: |
| 448 | return SkUTF16_CountUnichars((const uint16_t*)textData, |
| 449 | byteLength >> 1); |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 450 | case kUTF32_TextEncoding: |
| 451 | return byteLength >> 2; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 452 | case kGlyphID_TextEncoding: |
| 453 | return byteLength >> 1; |
| 454 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 455 | SkDEBUGFAIL("unknown text encoding"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 456 | } |
| 457 | return 0; |
| 458 | } |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 459 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 460 | // if we get here, we have a valid glyphs[] array, so time to fill it in |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 461 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 462 | // handle this encoding before the setup for the glyphcache |
| 463 | if (this->getTextEncoding() == kGlyphID_TextEncoding) { |
| 464 | // we want to ignore the low bit of byteLength |
| 465 | memcpy(glyphs, textData, byteLength >> 1 << 1); |
| 466 | return byteLength >> 1; |
| 467 | } |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 468 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 469 | SkAutoGlyphCache autoCache(*this, NULL); |
| 470 | SkGlyphCache* cache = autoCache.getCache(); |
| 471 | |
| 472 | const char* text = (const char*)textData; |
| 473 | const char* stop = text + byteLength; |
| 474 | uint16_t* gptr = glyphs; |
| 475 | |
| 476 | switch (this->getTextEncoding()) { |
| 477 | case SkPaint::kUTF8_TextEncoding: |
| 478 | while (text < stop) { |
| 479 | *gptr++ = cache->unicharToGlyph(SkUTF8_NextUnichar(&text)); |
| 480 | } |
| 481 | break; |
| 482 | case SkPaint::kUTF16_TextEncoding: { |
| 483 | const uint16_t* text16 = (const uint16_t*)text; |
| 484 | const uint16_t* stop16 = (const uint16_t*)stop; |
| 485 | while (text16 < stop16) { |
| 486 | *gptr++ = cache->unicharToGlyph(SkUTF16_NextUnichar(&text16)); |
| 487 | } |
| 488 | break; |
| 489 | } |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 490 | case kUTF32_TextEncoding: { |
| 491 | const int32_t* text32 = (const int32_t*)text; |
| 492 | const int32_t* stop32 = (const int32_t*)stop; |
| 493 | while (text32 < stop32) { |
| 494 | *gptr++ = cache->unicharToGlyph(*text32++); |
| 495 | } |
| 496 | break; |
| 497 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 498 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 499 | SkDEBUGFAIL("unknown text encoding"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 500 | } |
| 501 | return gptr - glyphs; |
| 502 | } |
| 503 | |
reed@android.com | a5dcaf6 | 2010-02-05 17:12:32 +0000 | [diff] [blame] | 504 | bool SkPaint::containsText(const void* textData, size_t byteLength) const { |
| 505 | if (0 == byteLength) { |
| 506 | return true; |
| 507 | } |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 508 | |
reed@android.com | a5dcaf6 | 2010-02-05 17:12:32 +0000 | [diff] [blame] | 509 | SkASSERT(textData != NULL); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 510 | |
reed@android.com | a5dcaf6 | 2010-02-05 17:12:32 +0000 | [diff] [blame] | 511 | // handle this encoding before the setup for the glyphcache |
| 512 | if (this->getTextEncoding() == kGlyphID_TextEncoding) { |
| 513 | const uint16_t* glyphID = static_cast<const uint16_t*>(textData); |
| 514 | size_t count = byteLength >> 1; |
| 515 | for (size_t i = 0; i < count; i++) { |
| 516 | if (0 == glyphID[i]) { |
| 517 | return false; |
| 518 | } |
| 519 | } |
| 520 | return true; |
| 521 | } |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 522 | |
reed@android.com | a5dcaf6 | 2010-02-05 17:12:32 +0000 | [diff] [blame] | 523 | SkAutoGlyphCache autoCache(*this, NULL); |
| 524 | SkGlyphCache* cache = autoCache.getCache(); |
| 525 | |
| 526 | switch (this->getTextEncoding()) { |
| 527 | case SkPaint::kUTF8_TextEncoding: { |
| 528 | const char* text = static_cast<const char*>(textData); |
| 529 | const char* stop = text + byteLength; |
| 530 | while (text < stop) { |
| 531 | if (0 == cache->unicharToGlyph(SkUTF8_NextUnichar(&text))) { |
| 532 | return false; |
| 533 | } |
| 534 | } |
| 535 | break; |
| 536 | } |
| 537 | case SkPaint::kUTF16_TextEncoding: { |
| 538 | const uint16_t* text = static_cast<const uint16_t*>(textData); |
| 539 | const uint16_t* stop = text + (byteLength >> 1); |
| 540 | while (text < stop) { |
| 541 | if (0 == cache->unicharToGlyph(SkUTF16_NextUnichar(&text))) { |
| 542 | return false; |
| 543 | } |
| 544 | } |
| 545 | break; |
| 546 | } |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 547 | case SkPaint::kUTF32_TextEncoding: { |
| 548 | const int32_t* text = static_cast<const int32_t*>(textData); |
| 549 | const int32_t* stop = text + (byteLength >> 2); |
| 550 | while (text < stop) { |
| 551 | if (0 == cache->unicharToGlyph(*text++)) { |
| 552 | return false; |
| 553 | } |
| 554 | } |
| 555 | break; |
| 556 | } |
reed@android.com | a5dcaf6 | 2010-02-05 17:12:32 +0000 | [diff] [blame] | 557 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 558 | SkDEBUGFAIL("unknown text encoding"); |
reed@android.com | a5dcaf6 | 2010-02-05 17:12:32 +0000 | [diff] [blame] | 559 | return false; |
| 560 | } |
| 561 | return true; |
| 562 | } |
| 563 | |
reed@android.com | 9d3a985 | 2010-01-08 14:07:42 +0000 | [diff] [blame] | 564 | void SkPaint::glyphsToUnichars(const uint16_t glyphs[], int count, |
| 565 | SkUnichar textData[]) const { |
| 566 | if (count <= 0) { |
| 567 | return; |
| 568 | } |
| 569 | |
| 570 | SkASSERT(glyphs != NULL); |
| 571 | SkASSERT(textData != NULL); |
| 572 | |
| 573 | SkAutoGlyphCache autoCache(*this, NULL); |
| 574 | SkGlyphCache* cache = autoCache.getCache(); |
| 575 | |
| 576 | for (int index = 0; index < count; index++) { |
| 577 | textData[index] = cache->glyphToUnichar(glyphs[index]); |
| 578 | } |
| 579 | } |
| 580 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 581 | /////////////////////////////////////////////////////////////////////////////// |
| 582 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 583 | static const SkGlyph& sk_getMetrics_utf8_next(SkGlyphCache* cache, |
| 584 | const char** text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 585 | SkASSERT(cache != NULL); |
| 586 | SkASSERT(text != NULL); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 587 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 588 | return cache->getUnicharMetrics(SkUTF8_NextUnichar(text)); |
| 589 | } |
| 590 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 591 | static const SkGlyph& sk_getMetrics_utf8_prev(SkGlyphCache* cache, |
| 592 | const char** text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 593 | SkASSERT(cache != NULL); |
| 594 | SkASSERT(text != NULL); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 595 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 596 | return cache->getUnicharMetrics(SkUTF8_PrevUnichar(text)); |
| 597 | } |
| 598 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 599 | static const SkGlyph& sk_getMetrics_utf16_next(SkGlyphCache* cache, |
| 600 | const char** text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 601 | SkASSERT(cache != NULL); |
| 602 | SkASSERT(text != NULL); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 603 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 604 | return cache->getUnicharMetrics(SkUTF16_NextUnichar((const uint16_t**)text)); |
| 605 | } |
| 606 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 607 | static const SkGlyph& sk_getMetrics_utf16_prev(SkGlyphCache* cache, |
| 608 | const char** text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 609 | SkASSERT(cache != NULL); |
| 610 | SkASSERT(text != NULL); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 611 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 612 | return cache->getUnicharMetrics(SkUTF16_PrevUnichar((const uint16_t**)text)); |
| 613 | } |
| 614 | |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 615 | static const SkGlyph& sk_getMetrics_utf32_next(SkGlyphCache* cache, |
| 616 | const char** text) { |
| 617 | SkASSERT(cache != NULL); |
| 618 | SkASSERT(text != NULL); |
| 619 | |
| 620 | const int32_t* ptr = *(const int32_t**)text; |
| 621 | SkUnichar uni = *ptr++; |
| 622 | *text = (const char*)ptr; |
| 623 | return cache->getUnicharMetrics(uni); |
| 624 | } |
| 625 | |
| 626 | static const SkGlyph& sk_getMetrics_utf32_prev(SkGlyphCache* cache, |
| 627 | const char** text) { |
| 628 | SkASSERT(cache != NULL); |
| 629 | SkASSERT(text != NULL); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 630 | |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 631 | const int32_t* ptr = *(const int32_t**)text; |
| 632 | SkUnichar uni = *--ptr; |
| 633 | *text = (const char*)ptr; |
| 634 | return cache->getUnicharMetrics(uni); |
| 635 | } |
| 636 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 637 | static const SkGlyph& sk_getMetrics_glyph_next(SkGlyphCache* cache, |
| 638 | const char** text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 639 | SkASSERT(cache != NULL); |
| 640 | SkASSERT(text != NULL); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 641 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 642 | const uint16_t* ptr = *(const uint16_t**)text; |
| 643 | unsigned glyphID = *ptr; |
| 644 | ptr += 1; |
| 645 | *text = (const char*)ptr; |
| 646 | return cache->getGlyphIDMetrics(glyphID); |
| 647 | } |
| 648 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 649 | static const SkGlyph& sk_getMetrics_glyph_prev(SkGlyphCache* cache, |
| 650 | const char** text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 651 | SkASSERT(cache != NULL); |
| 652 | SkASSERT(text != NULL); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 653 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 654 | const uint16_t* ptr = *(const uint16_t**)text; |
| 655 | ptr -= 1; |
| 656 | unsigned glyphID = *ptr; |
| 657 | *text = (const char*)ptr; |
| 658 | return cache->getGlyphIDMetrics(glyphID); |
| 659 | } |
| 660 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 661 | static const SkGlyph& sk_getAdvance_utf8_next(SkGlyphCache* cache, |
| 662 | const char** text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 663 | SkASSERT(cache != NULL); |
| 664 | SkASSERT(text != NULL); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 665 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 666 | return cache->getUnicharAdvance(SkUTF8_NextUnichar(text)); |
| 667 | } |
| 668 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 669 | static const SkGlyph& sk_getAdvance_utf8_prev(SkGlyphCache* cache, |
| 670 | const char** text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 671 | SkASSERT(cache != NULL); |
| 672 | SkASSERT(text != NULL); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 673 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 674 | return cache->getUnicharAdvance(SkUTF8_PrevUnichar(text)); |
| 675 | } |
| 676 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 677 | static const SkGlyph& sk_getAdvance_utf16_next(SkGlyphCache* cache, |
| 678 | const char** text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 679 | SkASSERT(cache != NULL); |
| 680 | SkASSERT(text != NULL); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 681 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 682 | return cache->getUnicharAdvance(SkUTF16_NextUnichar((const uint16_t**)text)); |
| 683 | } |
| 684 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 685 | static const SkGlyph& sk_getAdvance_utf16_prev(SkGlyphCache* cache, |
| 686 | const char** text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 687 | SkASSERT(cache != NULL); |
| 688 | SkASSERT(text != NULL); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 689 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 690 | return cache->getUnicharAdvance(SkUTF16_PrevUnichar((const uint16_t**)text)); |
| 691 | } |
| 692 | |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 693 | static const SkGlyph& sk_getAdvance_utf32_next(SkGlyphCache* cache, |
| 694 | const char** text) { |
| 695 | SkASSERT(cache != NULL); |
| 696 | SkASSERT(text != NULL); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 697 | |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 698 | const int32_t* ptr = *(const int32_t**)text; |
| 699 | SkUnichar uni = *ptr++; |
| 700 | *text = (const char*)ptr; |
| 701 | return cache->getUnicharAdvance(uni); |
| 702 | } |
| 703 | |
| 704 | static const SkGlyph& sk_getAdvance_utf32_prev(SkGlyphCache* cache, |
| 705 | const char** text) { |
| 706 | SkASSERT(cache != NULL); |
| 707 | SkASSERT(text != NULL); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 708 | |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 709 | const int32_t* ptr = *(const int32_t**)text; |
| 710 | SkUnichar uni = *--ptr; |
| 711 | *text = (const char*)ptr; |
| 712 | return cache->getUnicharAdvance(uni); |
| 713 | } |
| 714 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 715 | static const SkGlyph& sk_getAdvance_glyph_next(SkGlyphCache* cache, |
| 716 | const char** text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 717 | SkASSERT(cache != NULL); |
| 718 | SkASSERT(text != NULL); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 719 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 720 | const uint16_t* ptr = *(const uint16_t**)text; |
| 721 | unsigned glyphID = *ptr; |
| 722 | ptr += 1; |
| 723 | *text = (const char*)ptr; |
| 724 | return cache->getGlyphIDAdvance(glyphID); |
| 725 | } |
| 726 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 727 | static const SkGlyph& sk_getAdvance_glyph_prev(SkGlyphCache* cache, |
| 728 | const char** text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 729 | SkASSERT(cache != NULL); |
| 730 | SkASSERT(text != NULL); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 731 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 732 | const uint16_t* ptr = *(const uint16_t**)text; |
| 733 | ptr -= 1; |
| 734 | unsigned glyphID = *ptr; |
| 735 | *text = (const char*)ptr; |
| 736 | return cache->getGlyphIDAdvance(glyphID); |
| 737 | } |
| 738 | |
| 739 | SkMeasureCacheProc SkPaint::getMeasureCacheProc(TextBufferDirection tbd, |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 740 | bool needFullMetrics) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 741 | static const SkMeasureCacheProc gMeasureCacheProcs[] = { |
| 742 | sk_getMetrics_utf8_next, |
| 743 | sk_getMetrics_utf16_next, |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 744 | sk_getMetrics_utf32_next, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 745 | sk_getMetrics_glyph_next, |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 746 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 747 | sk_getMetrics_utf8_prev, |
| 748 | sk_getMetrics_utf16_prev, |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 749 | sk_getMetrics_utf32_prev, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 750 | sk_getMetrics_glyph_prev, |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 751 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 752 | sk_getAdvance_utf8_next, |
| 753 | sk_getAdvance_utf16_next, |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 754 | sk_getAdvance_utf32_next, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 755 | sk_getAdvance_glyph_next, |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 756 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 757 | sk_getAdvance_utf8_prev, |
| 758 | sk_getAdvance_utf16_prev, |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 759 | sk_getAdvance_utf32_prev, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 760 | sk_getAdvance_glyph_prev |
| 761 | }; |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 762 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 763 | unsigned index = this->getTextEncoding(); |
| 764 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 765 | if (kBackward_TextBufferDirection == tbd) { |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 766 | index += 4; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 767 | } |
| 768 | if (!needFullMetrics && !this->isDevKernText()) { |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 769 | index += 8; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 770 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 771 | |
| 772 | SkASSERT(index < SK_ARRAY_COUNT(gMeasureCacheProcs)); |
| 773 | return gMeasureCacheProcs[index]; |
| 774 | } |
| 775 | |
| 776 | /////////////////////////////////////////////////////////////////////////////// |
| 777 | |
| 778 | static const SkGlyph& sk_getMetrics_utf8_00(SkGlyphCache* cache, |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 779 | const char** text, SkFixed, SkFixed) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 780 | SkASSERT(cache != NULL); |
| 781 | SkASSERT(text != NULL); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 782 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 783 | return cache->getUnicharMetrics(SkUTF8_NextUnichar(text)); |
| 784 | } |
| 785 | |
| 786 | static const SkGlyph& sk_getMetrics_utf8_xy(SkGlyphCache* cache, |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 787 | const char** text, SkFixed x, SkFixed y) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 788 | SkASSERT(cache != NULL); |
| 789 | SkASSERT(text != NULL); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 790 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 791 | return cache->getUnicharMetrics(SkUTF8_NextUnichar(text), x, y); |
| 792 | } |
| 793 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 794 | static const SkGlyph& sk_getMetrics_utf16_00(SkGlyphCache* cache, |
| 795 | const char** text, SkFixed, SkFixed) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 796 | SkASSERT(cache != NULL); |
| 797 | SkASSERT(text != NULL); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 798 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 799 | return cache->getUnicharMetrics(SkUTF16_NextUnichar((const uint16_t**)text)); |
| 800 | } |
| 801 | |
| 802 | static const SkGlyph& sk_getMetrics_utf16_xy(SkGlyphCache* cache, |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 803 | const char** text, SkFixed x, SkFixed y) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 804 | SkASSERT(cache != NULL); |
| 805 | SkASSERT(text != NULL); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 806 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 807 | return cache->getUnicharMetrics(SkUTF16_NextUnichar((const uint16_t**)text), |
| 808 | x, y); |
| 809 | } |
| 810 | |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 811 | static const SkGlyph& sk_getMetrics_utf32_00(SkGlyphCache* cache, |
| 812 | const char** text, SkFixed, SkFixed) { |
| 813 | SkASSERT(cache != NULL); |
| 814 | SkASSERT(text != NULL); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 815 | |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 816 | const int32_t* ptr = *(const int32_t**)text; |
| 817 | SkUnichar uni = *ptr++; |
| 818 | *text = (const char*)ptr; |
| 819 | return cache->getUnicharMetrics(uni); |
| 820 | } |
| 821 | |
| 822 | static const SkGlyph& sk_getMetrics_utf32_xy(SkGlyphCache* cache, |
| 823 | const char** text, SkFixed x, SkFixed y) { |
| 824 | SkASSERT(cache != NULL); |
| 825 | SkASSERT(text != NULL); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 826 | |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 827 | const int32_t* ptr = *(const int32_t**)text; |
| 828 | SkUnichar uni = *--ptr; |
| 829 | *text = (const char*)ptr; |
| 830 | return cache->getUnicharMetrics(uni); |
| 831 | } |
| 832 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 833 | static const SkGlyph& sk_getMetrics_glyph_00(SkGlyphCache* cache, |
| 834 | const char** text, SkFixed, SkFixed) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 835 | SkASSERT(cache != NULL); |
| 836 | SkASSERT(text != NULL); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 837 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 838 | const uint16_t* ptr = *(const uint16_t**)text; |
| 839 | unsigned glyphID = *ptr; |
| 840 | ptr += 1; |
| 841 | *text = (const char*)ptr; |
| 842 | return cache->getGlyphIDMetrics(glyphID); |
| 843 | } |
| 844 | |
| 845 | static const SkGlyph& sk_getMetrics_glyph_xy(SkGlyphCache* cache, |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 846 | const char** text, SkFixed x, SkFixed y) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 847 | SkASSERT(cache != NULL); |
| 848 | SkASSERT(text != NULL); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 849 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 850 | const uint16_t* ptr = *(const uint16_t**)text; |
| 851 | unsigned glyphID = *ptr; |
| 852 | ptr += 1; |
| 853 | *text = (const char*)ptr; |
| 854 | return cache->getGlyphIDMetrics(glyphID, x, y); |
| 855 | } |
| 856 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 857 | SkDrawCacheProc SkPaint::getDrawCacheProc() const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 858 | static const SkDrawCacheProc gDrawCacheProcs[] = { |
| 859 | sk_getMetrics_utf8_00, |
| 860 | sk_getMetrics_utf16_00, |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 861 | sk_getMetrics_utf32_00, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 862 | sk_getMetrics_glyph_00, |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 863 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 864 | sk_getMetrics_utf8_xy, |
| 865 | sk_getMetrics_utf16_xy, |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 866 | sk_getMetrics_utf32_xy, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 867 | sk_getMetrics_glyph_xy |
| 868 | }; |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 869 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 870 | unsigned index = this->getTextEncoding(); |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 871 | if (fFlags & kSubpixelText_Flag) { |
reed@google.com | 68bc6f7 | 2012-03-14 19:41:55 +0000 | [diff] [blame] | 872 | index += 4; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 873 | } |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 874 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 875 | SkASSERT(index < SK_ARRAY_COUNT(gDrawCacheProcs)); |
| 876 | return gDrawCacheProcs[index]; |
| 877 | } |
| 878 | |
| 879 | /////////////////////////////////////////////////////////////////////////////// |
| 880 | |
| 881 | class SkAutoRestorePaintTextSizeAndFrame { |
| 882 | public: |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 883 | SkAutoRestorePaintTextSizeAndFrame(const SkPaint* paint) |
| 884 | : fPaint((SkPaint*)paint) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 885 | fTextSize = paint->getTextSize(); |
| 886 | fStyle = paint->getStyle(); |
| 887 | fPaint->setStyle(SkPaint::kFill_Style); |
| 888 | } |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 889 | |
| 890 | ~SkAutoRestorePaintTextSizeAndFrame() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 891 | fPaint->setStyle(fStyle); |
| 892 | fPaint->setTextSize(fTextSize); |
| 893 | } |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 894 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 895 | private: |
| 896 | SkPaint* fPaint; |
| 897 | SkScalar fTextSize; |
| 898 | SkPaint::Style fStyle; |
| 899 | }; |
| 900 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 901 | static void set_bounds(const SkGlyph& g, SkRect* bounds) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 902 | bounds->set(SkIntToScalar(g.fLeft), |
| 903 | SkIntToScalar(g.fTop), |
| 904 | SkIntToScalar(g.fLeft + g.fWidth), |
| 905 | SkIntToScalar(g.fTop + g.fHeight)); |
| 906 | } |
| 907 | |
reed@android.com | e88f551 | 2010-03-19 14:42:28 +0000 | [diff] [blame] | 908 | // 64bits wide, with a 16bit bias. Useful when accumulating lots of 16.16 so |
| 909 | // we don't overflow along the way |
| 910 | typedef int64_t Sk48Dot16; |
| 911 | |
| 912 | #ifdef SK_SCALAR_IS_FLOAT |
| 913 | static inline float Sk48Dot16ToScalar(Sk48Dot16 x) { |
reed@android.com | e89d3ec | 2010-05-18 21:23:30 +0000 | [diff] [blame] | 914 | return (float) (x * 1.5258789e-5); // x * (1 / 65536.0f) |
reed@android.com | e88f551 | 2010-03-19 14:42:28 +0000 | [diff] [blame] | 915 | } |
| 916 | #else |
| 917 | static inline SkFixed Sk48Dot16ToScalar(Sk48Dot16 x) { |
| 918 | // just return the low 32bits |
| 919 | return static_cast<SkFixed>(x); |
| 920 | } |
| 921 | #endif |
| 922 | |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 923 | static void join_bounds_x(const SkGlyph& g, SkRect* bounds, Sk48Dot16 dx) { |
reed@android.com | e88f551 | 2010-03-19 14:42:28 +0000 | [diff] [blame] | 924 | SkScalar sx = Sk48Dot16ToScalar(dx); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 925 | bounds->join(SkIntToScalar(g.fLeft) + sx, |
| 926 | SkIntToScalar(g.fTop), |
| 927 | SkIntToScalar(g.fLeft + g.fWidth) + sx, |
| 928 | SkIntToScalar(g.fTop + g.fHeight)); |
| 929 | } |
| 930 | |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 931 | static void join_bounds_y(const SkGlyph& g, SkRect* bounds, Sk48Dot16 dy) { |
| 932 | SkScalar sy = Sk48Dot16ToScalar(dy); |
| 933 | bounds->join(SkIntToScalar(g.fLeft), |
| 934 | SkIntToScalar(g.fTop) + sy, |
| 935 | SkIntToScalar(g.fLeft + g.fWidth), |
| 936 | SkIntToScalar(g.fTop + g.fHeight) + sy); |
| 937 | } |
| 938 | |
| 939 | typedef void (*JoinBoundsProc)(const SkGlyph&, SkRect*, Sk48Dot16); |
| 940 | |
| 941 | // xyIndex is 0 for fAdvanceX or 1 for fAdvanceY |
| 942 | static SkFixed advance(const SkGlyph& glyph, int xyIndex) { |
| 943 | SkASSERT(0 == xyIndex || 1 == xyIndex); |
| 944 | return (&glyph.fAdvanceX)[xyIndex]; |
| 945 | } |
| 946 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 947 | SkScalar SkPaint::measure_text(SkGlyphCache* cache, |
| 948 | const char* text, size_t byteLength, |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 949 | int* count, SkRect* bounds) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 950 | SkASSERT(count); |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 951 | if (byteLength == 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 952 | *count = 0; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 953 | if (bounds) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 954 | bounds->setEmpty(); |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 955 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 956 | return 0; |
| 957 | } |
| 958 | |
| 959 | SkMeasureCacheProc glyphCacheProc; |
| 960 | glyphCacheProc = this->getMeasureCacheProc(kForward_TextBufferDirection, |
| 961 | NULL != bounds); |
| 962 | |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 963 | int xyIndex; |
| 964 | JoinBoundsProc joinBoundsProc; |
| 965 | if (this->isVerticalText()) { |
| 966 | xyIndex = 1; |
| 967 | joinBoundsProc = join_bounds_y; |
| 968 | } else { |
| 969 | xyIndex = 0; |
| 970 | joinBoundsProc = join_bounds_x; |
| 971 | } |
| 972 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 973 | int n = 1; |
| 974 | const char* stop = (const char*)text + byteLength; |
| 975 | const SkGlyph* g = &glyphCacheProc(cache, &text); |
reed@android.com | e88f551 | 2010-03-19 14:42:28 +0000 | [diff] [blame] | 976 | // our accumulated fixed-point advances might overflow 16.16, so we use |
| 977 | // a 48.16 (64bit) accumulator, and then convert that to scalar at the |
| 978 | // very end. |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 979 | Sk48Dot16 x = advance(*g, xyIndex); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 980 | |
| 981 | SkAutoKern autokern; |
| 982 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 983 | if (NULL == bounds) { |
| 984 | if (this->isDevKernText()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 985 | int rsb; |
| 986 | for (; text < stop; n++) { |
| 987 | rsb = g->fRsbDelta; |
| 988 | g = &glyphCacheProc(cache, &text); |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 989 | x += SkAutoKern_AdjustF(rsb, g->fLsbDelta) + advance(*g, xyIndex); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 990 | } |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 991 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 992 | for (; text < stop; n++) { |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 993 | x += advance(glyphCacheProc(cache, &text), xyIndex); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 994 | } |
| 995 | } |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 996 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 997 | set_bounds(*g, bounds); |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 998 | if (this->isDevKernText()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 999 | int rsb; |
| 1000 | for (; text < stop; n++) { |
| 1001 | rsb = g->fRsbDelta; |
| 1002 | g = &glyphCacheProc(cache, &text); |
| 1003 | x += SkAutoKern_AdjustF(rsb, g->fLsbDelta); |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 1004 | joinBoundsProc(*g, bounds, x); |
| 1005 | x += advance(*g, xyIndex); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1006 | } |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1007 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1008 | for (; text < stop; n++) { |
| 1009 | g = &glyphCacheProc(cache, &text); |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 1010 | joinBoundsProc(*g, bounds, x); |
| 1011 | x += advance(*g, xyIndex); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1012 | } |
| 1013 | } |
| 1014 | } |
| 1015 | SkASSERT(text == stop); |
| 1016 | |
| 1017 | *count = n; |
reed@android.com | e88f551 | 2010-03-19 14:42:28 +0000 | [diff] [blame] | 1018 | return Sk48Dot16ToScalar(x); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1019 | } |
| 1020 | |
| 1021 | SkScalar SkPaint::measureText(const void* textData, size_t length, |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1022 | SkRect* bounds, SkScalar zoom) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1023 | const char* text = (const char*)textData; |
| 1024 | SkASSERT(text != NULL || length == 0); |
| 1025 | |
| 1026 | SkScalar scale = 0; |
| 1027 | SkAutoRestorePaintTextSizeAndFrame restore(this); |
| 1028 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1029 | if (this->isLinearText()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1030 | scale = fTextSize / kCanonicalTextSizeForPaths; |
| 1031 | // this gets restored by restore |
| 1032 | ((SkPaint*)this)->setTextSize(SkIntToScalar(kCanonicalTextSizeForPaths)); |
| 1033 | } |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 1034 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1035 | SkMatrix zoomMatrix, *zoomPtr = NULL; |
| 1036 | if (zoom) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1037 | zoomMatrix.setScale(zoom, zoom); |
| 1038 | zoomPtr = &zoomMatrix; |
| 1039 | } |
| 1040 | |
| 1041 | SkAutoGlyphCache autoCache(*this, zoomPtr); |
| 1042 | SkGlyphCache* cache = autoCache.getCache(); |
| 1043 | |
| 1044 | SkScalar width = 0; |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 1045 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1046 | if (length > 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1047 | int tempCount; |
| 1048 | |
| 1049 | width = this->measure_text(cache, text, length, &tempCount, bounds); |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1050 | if (scale) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1051 | width = SkScalarMul(width, scale); |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1052 | if (bounds) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1053 | bounds->fLeft = SkScalarMul(bounds->fLeft, scale); |
| 1054 | bounds->fTop = SkScalarMul(bounds->fTop, scale); |
| 1055 | bounds->fRight = SkScalarMul(bounds->fRight, scale); |
| 1056 | bounds->fBottom = SkScalarMul(bounds->fBottom, scale); |
| 1057 | } |
| 1058 | } |
| 1059 | } |
| 1060 | return width; |
| 1061 | } |
| 1062 | |
| 1063 | typedef bool (*SkTextBufferPred)(const char* text, const char* stop); |
| 1064 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1065 | static bool forward_textBufferPred(const char* text, const char* stop) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1066 | return text < stop; |
| 1067 | } |
| 1068 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1069 | static bool backward_textBufferPred(const char* text, const char* stop) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1070 | return text > stop; |
| 1071 | } |
| 1072 | |
| 1073 | static SkTextBufferPred chooseTextBufferPred(SkPaint::TextBufferDirection tbd, |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1074 | const char** text, size_t length, |
| 1075 | const char** stop) { |
| 1076 | if (SkPaint::kForward_TextBufferDirection == tbd) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1077 | *stop = *text + length; |
| 1078 | return forward_textBufferPred; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1079 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1080 | // text should point to the end of the buffer, and stop to the beginning |
| 1081 | *stop = *text; |
| 1082 | *text += length; |
| 1083 | return backward_textBufferPred; |
| 1084 | } |
| 1085 | } |
| 1086 | |
| 1087 | size_t SkPaint::breakText(const void* textD, size_t length, SkScalar maxWidth, |
| 1088 | SkScalar* measuredWidth, |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1089 | TextBufferDirection tbd) const { |
| 1090 | if (0 == length || 0 >= maxWidth) { |
| 1091 | if (measuredWidth) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1092 | *measuredWidth = 0; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1093 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1094 | return 0; |
| 1095 | } |
| 1096 | |
djsollen@google.com | c6f2e7d | 2012-01-04 18:43:43 +0000 | [diff] [blame] | 1097 | if (0 == fTextSize) { |
| 1098 | if (measuredWidth) { |
| 1099 | *measuredWidth = 0; |
| 1100 | } |
| 1101 | return length; |
| 1102 | } |
| 1103 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1104 | SkASSERT(textD != NULL); |
| 1105 | const char* text = (const char*)textD; |
| 1106 | |
| 1107 | SkScalar scale = 0; |
| 1108 | SkAutoRestorePaintTextSizeAndFrame restore(this); |
| 1109 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1110 | if (this->isLinearText()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1111 | scale = fTextSize / kCanonicalTextSizeForPaths; |
reed@android.com | 647d3da | 2010-05-17 14:15:14 +0000 | [diff] [blame] | 1112 | maxWidth = SkScalarMulDiv(maxWidth, kCanonicalTextSizeForPaths, fTextSize); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1113 | // this gets restored by restore |
| 1114 | ((SkPaint*)this)->setTextSize(SkIntToScalar(kCanonicalTextSizeForPaths)); |
| 1115 | } |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 1116 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1117 | SkAutoGlyphCache autoCache(*this, NULL); |
| 1118 | SkGlyphCache* cache = autoCache.getCache(); |
| 1119 | |
| 1120 | SkMeasureCacheProc glyphCacheProc = this->getMeasureCacheProc(tbd, false); |
| 1121 | const char* stop; |
| 1122 | SkTextBufferPred pred = chooseTextBufferPred(tbd, &text, length, &stop); |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 1123 | const int xyIndex = this->isVerticalText() ? 1 : 0; |
reed@android.com | e88f551 | 2010-03-19 14:42:28 +0000 | [diff] [blame] | 1124 | // use 64bits for our accumulator, to avoid overflowing 16.16 |
| 1125 | Sk48Dot16 max = SkScalarToFixed(maxWidth); |
| 1126 | Sk48Dot16 width = 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1127 | |
| 1128 | SkAutoKern autokern; |
| 1129 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1130 | if (this->isDevKernText()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1131 | int rsb = 0; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1132 | while (pred(text, stop)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1133 | const char* curr = text; |
| 1134 | const SkGlyph& g = glyphCacheProc(cache, &text); |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 1135 | SkFixed x = SkAutoKern_AdjustF(rsb, g.fLsbDelta) + advance(g, xyIndex); |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1136 | if ((width += x) > max) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1137 | width -= x; |
| 1138 | text = curr; |
| 1139 | break; |
| 1140 | } |
| 1141 | rsb = g.fRsbDelta; |
| 1142 | } |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1143 | } else { |
| 1144 | while (pred(text, stop)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1145 | const char* curr = text; |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 1146 | SkFixed x = advance(glyphCacheProc(cache, &text), xyIndex); |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1147 | if ((width += x) > max) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1148 | width -= x; |
| 1149 | text = curr; |
| 1150 | break; |
| 1151 | } |
| 1152 | } |
| 1153 | } |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 1154 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1155 | if (measuredWidth) { |
reed@android.com | e88f551 | 2010-03-19 14:42:28 +0000 | [diff] [blame] | 1156 | SkScalar scalarWidth = Sk48Dot16ToScalar(width); |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1157 | if (scale) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1158 | scalarWidth = SkScalarMul(scalarWidth, scale); |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1159 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1160 | *measuredWidth = scalarWidth; |
| 1161 | } |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 1162 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1163 | // return the number of bytes measured |
| 1164 | return (kForward_TextBufferDirection == tbd) ? |
| 1165 | text - stop + length : stop - text + length; |
| 1166 | } |
| 1167 | |
| 1168 | /////////////////////////////////////////////////////////////////////////////// |
| 1169 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1170 | static bool FontMetricsCacheProc(const SkGlyphCache* cache, void* context) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1171 | *(SkPaint::FontMetrics*)context = cache->getFontMetricsY(); |
| 1172 | return false; // don't detach the cache |
| 1173 | } |
| 1174 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1175 | static void FontMetricsDescProc(const SkDescriptor* desc, void* context) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1176 | SkGlyphCache::VisitCache(desc, FontMetricsCacheProc, context); |
| 1177 | } |
| 1178 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1179 | SkScalar SkPaint::getFontMetrics(FontMetrics* metrics, SkScalar zoom) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1180 | SkScalar scale = 0; |
| 1181 | SkAutoRestorePaintTextSizeAndFrame restore(this); |
| 1182 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1183 | if (this->isLinearText()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1184 | scale = fTextSize / kCanonicalTextSizeForPaths; |
| 1185 | // this gets restored by restore |
| 1186 | ((SkPaint*)this)->setTextSize(SkIntToScalar(kCanonicalTextSizeForPaths)); |
| 1187 | } |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 1188 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1189 | SkMatrix zoomMatrix, *zoomPtr = NULL; |
| 1190 | if (zoom) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1191 | zoomMatrix.setScale(zoom, zoom); |
| 1192 | zoomPtr = &zoomMatrix; |
| 1193 | } |
| 1194 | |
| 1195 | #if 0 |
| 1196 | SkAutoGlyphCache autoCache(*this, zoomPtr); |
| 1197 | SkGlyphCache* cache = autoCache.getCache(); |
| 1198 | const FontMetrics& my = cache->getFontMetricsY(); |
| 1199 | #endif |
| 1200 | FontMetrics storage; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1201 | if (NULL == metrics) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1202 | metrics = &storage; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1203 | } |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 1204 | |
reed@google.com | ffe49f5 | 2011-11-22 19:42:41 +0000 | [diff] [blame] | 1205 | this->descriptorProc(zoomPtr, FontMetricsDescProc, metrics, true); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1206 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1207 | if (scale) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1208 | metrics->fTop = SkScalarMul(metrics->fTop, scale); |
| 1209 | metrics->fAscent = SkScalarMul(metrics->fAscent, scale); |
| 1210 | metrics->fDescent = SkScalarMul(metrics->fDescent, scale); |
| 1211 | metrics->fBottom = SkScalarMul(metrics->fBottom, scale); |
| 1212 | metrics->fLeading = SkScalarMul(metrics->fLeading, scale); |
| 1213 | } |
| 1214 | return metrics->fDescent - metrics->fAscent + metrics->fLeading; |
| 1215 | } |
| 1216 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1217 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1218 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1219 | static void set_bounds(const SkGlyph& g, SkRect* bounds, SkScalar scale) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1220 | bounds->set(g.fLeft * scale, |
| 1221 | g.fTop * scale, |
| 1222 | (g.fLeft + g.fWidth) * scale, |
| 1223 | (g.fTop + g.fHeight) * scale); |
| 1224 | } |
| 1225 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1226 | int SkPaint::getTextWidths(const void* textData, size_t byteLength, |
| 1227 | SkScalar widths[], SkRect bounds[]) const { |
| 1228 | if (0 == byteLength) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1229 | return 0; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1230 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1231 | |
| 1232 | SkASSERT(NULL != textData); |
| 1233 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1234 | if (NULL == widths && NULL == bounds) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1235 | return this->countText(textData, byteLength); |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1236 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1237 | |
| 1238 | SkAutoRestorePaintTextSizeAndFrame restore(this); |
| 1239 | SkScalar scale = 0; |
| 1240 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1241 | if (this->isLinearText()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1242 | scale = fTextSize / kCanonicalTextSizeForPaths; |
| 1243 | // this gets restored by restore |
| 1244 | ((SkPaint*)this)->setTextSize(SkIntToScalar(kCanonicalTextSizeForPaths)); |
| 1245 | } |
| 1246 | |
| 1247 | SkAutoGlyphCache autoCache(*this, NULL); |
| 1248 | SkGlyphCache* cache = autoCache.getCache(); |
| 1249 | SkMeasureCacheProc glyphCacheProc; |
| 1250 | glyphCacheProc = this->getMeasureCacheProc(kForward_TextBufferDirection, |
| 1251 | NULL != bounds); |
| 1252 | |
| 1253 | const char* text = (const char*)textData; |
| 1254 | const char* stop = text + byteLength; |
| 1255 | int count = 0; |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 1256 | const int xyIndex = this->isVerticalText() ? 1 : 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1257 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1258 | if (this->isDevKernText()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1259 | // we adjust the widths returned here through auto-kerning |
| 1260 | SkAutoKern autokern; |
| 1261 | SkFixed prevWidth = 0; |
| 1262 | |
| 1263 | if (scale) { |
| 1264 | while (text < stop) { |
| 1265 | const SkGlyph& g = glyphCacheProc(cache, &text); |
| 1266 | if (widths) { |
| 1267 | SkFixed adjust = autokern.adjust(g); |
| 1268 | |
| 1269 | if (count > 0) { |
| 1270 | SkScalar w = SkFixedToScalar(prevWidth + adjust); |
| 1271 | *widths++ = SkScalarMul(w, scale); |
| 1272 | } |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 1273 | prevWidth = advance(g, xyIndex); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1274 | } |
| 1275 | if (bounds) { |
| 1276 | set_bounds(g, bounds++, scale); |
| 1277 | } |
| 1278 | ++count; |
| 1279 | } |
| 1280 | if (count > 0 && widths) { |
| 1281 | *widths = SkScalarMul(SkFixedToScalar(prevWidth), scale); |
| 1282 | } |
| 1283 | } else { |
| 1284 | while (text < stop) { |
| 1285 | const SkGlyph& g = glyphCacheProc(cache, &text); |
| 1286 | if (widths) { |
| 1287 | SkFixed adjust = autokern.adjust(g); |
| 1288 | |
| 1289 | if (count > 0) { |
| 1290 | *widths++ = SkFixedToScalar(prevWidth + adjust); |
| 1291 | } |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 1292 | prevWidth = advance(g, xyIndex); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1293 | } |
| 1294 | if (bounds) { |
| 1295 | set_bounds(g, bounds++); |
| 1296 | } |
| 1297 | ++count; |
| 1298 | } |
| 1299 | if (count > 0 && widths) { |
| 1300 | *widths = SkFixedToScalar(prevWidth); |
| 1301 | } |
| 1302 | } |
| 1303 | } else { // no devkern |
| 1304 | if (scale) { |
| 1305 | while (text < stop) { |
| 1306 | const SkGlyph& g = glyphCacheProc(cache, &text); |
| 1307 | if (widths) { |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 1308 | *widths++ = SkScalarMul(SkFixedToScalar(advance(g, xyIndex)), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1309 | scale); |
| 1310 | } |
| 1311 | if (bounds) { |
| 1312 | set_bounds(g, bounds++, scale); |
| 1313 | } |
| 1314 | ++count; |
| 1315 | } |
| 1316 | } else { |
| 1317 | while (text < stop) { |
| 1318 | const SkGlyph& g = glyphCacheProc(cache, &text); |
| 1319 | if (widths) { |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 1320 | *widths++ = SkFixedToScalar(advance(g, xyIndex)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1321 | } |
| 1322 | if (bounds) { |
| 1323 | set_bounds(g, bounds++); |
| 1324 | } |
| 1325 | ++count; |
| 1326 | } |
| 1327 | } |
| 1328 | } |
| 1329 | |
| 1330 | SkASSERT(text == stop); |
| 1331 | return count; |
| 1332 | } |
| 1333 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1334 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1335 | |
| 1336 | #include "SkDraw.h" |
| 1337 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1338 | void SkPaint::getTextPath(const void* textData, size_t length, |
| 1339 | SkScalar x, SkScalar y, SkPath* path) const { |
| 1340 | SkASSERT(length == 0 || textData != NULL); |
| 1341 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1342 | const char* text = (const char*)textData; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1343 | if (text == NULL || length == 0 || path == NULL) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1344 | return; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1345 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1346 | |
djsollen@google.com | 166e653 | 2012-03-20 14:24:38 +0000 | [diff] [blame] | 1347 | SkTextToPathIter iter(text, length, *this, false); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1348 | SkMatrix matrix; |
| 1349 | SkScalar prevXPos = 0; |
| 1350 | |
| 1351 | matrix.setScale(iter.getPathScale(), iter.getPathScale()); |
| 1352 | matrix.postTranslate(x, y); |
| 1353 | path->reset(); |
| 1354 | |
| 1355 | SkScalar xpos; |
| 1356 | const SkPath* iterPath; |
reed@google.com | 7b4531f | 2012-08-07 15:53:00 +0000 | [diff] [blame] | 1357 | while (iter.next(&iterPath, &xpos)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1358 | matrix.postTranslate(xpos - prevXPos, 0); |
reed@google.com | 7b4531f | 2012-08-07 15:53:00 +0000 | [diff] [blame] | 1359 | if (iterPath) { |
| 1360 | path->addPath(*iterPath, matrix); |
| 1361 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1362 | prevXPos = xpos; |
| 1363 | } |
| 1364 | } |
| 1365 | |
reed@google.com | ca0062e | 2012-07-20 11:20:32 +0000 | [diff] [blame] | 1366 | void SkPaint::getPosTextPath(const void* textData, size_t length, |
| 1367 | const SkPoint pos[], SkPath* path) const { |
| 1368 | SkASSERT(length == 0 || textData != NULL); |
| 1369 | |
| 1370 | const char* text = (const char*)textData; |
| 1371 | if (text == NULL || length == 0 || path == NULL) { |
| 1372 | return; |
| 1373 | } |
| 1374 | |
| 1375 | SkTextToPathIter iter(text, length, *this, false); |
| 1376 | SkMatrix matrix; |
| 1377 | SkPoint prevPos; |
| 1378 | prevPos.set(0, 0); |
| 1379 | |
| 1380 | matrix.setScale(iter.getPathScale(), iter.getPathScale()); |
| 1381 | path->reset(); |
| 1382 | |
| 1383 | unsigned int i = 0; |
| 1384 | const SkPath* iterPath; |
reed@google.com | 7b4531f | 2012-08-07 15:53:00 +0000 | [diff] [blame] | 1385 | while (iter.next(&iterPath, NULL)) { |
reed@google.com | ca0062e | 2012-07-20 11:20:32 +0000 | [diff] [blame] | 1386 | matrix.postTranslate(pos[i].fX - prevPos.fX, pos[i].fY - prevPos.fY); |
reed@google.com | 7b4531f | 2012-08-07 15:53:00 +0000 | [diff] [blame] | 1387 | if (iterPath) { |
| 1388 | path->addPath(*iterPath, matrix); |
| 1389 | } |
reed@google.com | ca0062e | 2012-07-20 11:20:32 +0000 | [diff] [blame] | 1390 | prevPos = pos[i]; |
| 1391 | i++; |
| 1392 | } |
| 1393 | } |
| 1394 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1395 | static void add_flattenable(SkDescriptor* desc, uint32_t tag, |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1396 | SkOrderedWriteBuffer* buffer) { |
| 1397 | buffer->writeToMemory(desc->addEntry(tag, buffer->size(), NULL)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1398 | } |
| 1399 | |
reed@google.com | 2739b27 | 2011-09-28 17:26:42 +0000 | [diff] [blame] | 1400 | // SkFontHost can override this choice in FilterRec() |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1401 | static SkMask::Format computeMaskFormat(const SkPaint& paint) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1402 | uint32_t flags = paint.getFlags(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1403 | |
agl@chromium.org | b4234a2 | 2010-01-21 11:43:44 +0000 | [diff] [blame] | 1404 | // Antialiasing being disabled trumps all other settings. |
reed@google.com | 65dd8f8 | 2011-03-14 13:31:16 +0000 | [diff] [blame] | 1405 | if (!(flags & SkPaint::kAntiAlias_Flag)) { |
agl@chromium.org | b4234a2 | 2010-01-21 11:43:44 +0000 | [diff] [blame] | 1406 | return SkMask::kBW_Format; |
reed@google.com | f88d676 | 2011-03-10 15:06:27 +0000 | [diff] [blame] | 1407 | } |
| 1408 | |
reed@google.com | 65dd8f8 | 2011-03-14 13:31:16 +0000 | [diff] [blame] | 1409 | if (flags & SkPaint::kLCDRenderText_Flag) { |
reed@google.com | f67e4cf | 2011-03-15 20:56:58 +0000 | [diff] [blame] | 1410 | return SkMask::kLCD16_Format; |
reed@google.com | 65dd8f8 | 2011-03-14 13:31:16 +0000 | [diff] [blame] | 1411 | } |
agl@chromium.org | b4234a2 | 2010-01-21 11:43:44 +0000 | [diff] [blame] | 1412 | |
| 1413 | return SkMask::kA8_Format; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1414 | } |
| 1415 | |
reed@android.com | 1cdcb51 | 2009-08-24 19:11:00 +0000 | [diff] [blame] | 1416 | // if linear-text is on, then we force hinting to be off (since that's sort of |
| 1417 | // the point of linear-text. |
| 1418 | static SkPaint::Hinting computeHinting(const SkPaint& paint) { |
| 1419 | SkPaint::Hinting h = paint.getHinting(); |
| 1420 | if (paint.isLinearText()) { |
| 1421 | h = SkPaint::kNo_Hinting; |
| 1422 | } |
| 1423 | return h; |
| 1424 | } |
| 1425 | |
reed@google.com | 1f6b4ae | 2011-11-22 14:20:55 +0000 | [diff] [blame] | 1426 | // return true if the paint is just a single color (i.e. not a shader). If its |
| 1427 | // a shader, then we can't compute a const luminance for it :( |
| 1428 | static bool justAColor(const SkPaint& paint, SkColor* color) { |
| 1429 | if (paint.getShader()) { |
| 1430 | return false; |
| 1431 | } |
| 1432 | SkColor c = paint.getColor(); |
| 1433 | if (paint.getColorFilter()) { |
| 1434 | c = paint.getColorFilter()->filterColor(c); |
| 1435 | } |
| 1436 | if (color) { |
| 1437 | *color = c; |
| 1438 | } |
| 1439 | return true; |
| 1440 | } |
| 1441 | |
reed@google.com | ce6dbb6 | 2012-02-10 22:01:45 +0000 | [diff] [blame] | 1442 | static SkColor computeLuminanceColor(const SkPaint& paint) { |
| 1443 | SkColor c; |
| 1444 | if (!justAColor(paint, &c)) { |
| 1445 | c = SkColorSetRGB(0x7F, 0x80, 0x7F); |
| 1446 | } |
| 1447 | return c; |
| 1448 | } |
reed@google.com | 813d38b | 2012-02-13 21:37:57 +0000 | [diff] [blame] | 1449 | |
reed@google.com | dd43df9 | 2012-02-15 14:50:29 +0000 | [diff] [blame] | 1450 | #define assert_byte(x) SkASSERT(0 == ((x) >> 8)) |
| 1451 | |
reed@google.com | 4f79b9b | 2011-09-13 13:23:26 +0000 | [diff] [blame] | 1452 | // Beyond this size, LCD doesn't appreciably improve quality, but it always |
| 1453 | // cost more RAM and draws slower, so we set a cap. |
reed@google.com | c27b741 | 2011-09-13 17:20:30 +0000 | [diff] [blame] | 1454 | #ifndef SK_MAX_SIZE_FOR_LCDTEXT |
| 1455 | #define SK_MAX_SIZE_FOR_LCDTEXT 48 |
| 1456 | #endif |
reed@google.com | 4f79b9b | 2011-09-13 13:23:26 +0000 | [diff] [blame] | 1457 | |
| 1458 | static bool tooBigForLCD(const SkScalerContext::Rec& rec) { |
| 1459 | SkScalar area = SkScalarMul(rec.fPost2x2[0][0], rec.fPost2x2[1][1]) - |
| 1460 | SkScalarMul(rec.fPost2x2[1][0], rec.fPost2x2[0][1]); |
| 1461 | SkScalar size = SkScalarMul(area, rec.fTextSize); |
reed@google.com | c27b741 | 2011-09-13 17:20:30 +0000 | [diff] [blame] | 1462 | return SkScalarAbs(size) > SkIntToScalar(SK_MAX_SIZE_FOR_LCDTEXT); |
reed@google.com | 4f79b9b | 2011-09-13 13:23:26 +0000 | [diff] [blame] | 1463 | } |
| 1464 | |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 1465 | /* |
| 1466 | * Return the scalar with only limited fractional precision. Used to consolidate matrices |
| 1467 | * that vary only slightly when we create our key into the font cache, since the font scaler |
| 1468 | * typically returns the same looking resuts for tiny changes in the matrix. |
| 1469 | */ |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1470 | static SkScalar sk_relax(SkScalar x) { |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 1471 | #ifdef SK_SCALAR_IS_FLOAT |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1472 | int n = sk_float_round2int(x * 1024); |
| 1473 | return n / 1024.0f; |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 1474 | #else |
| 1475 | // round to the nearest 10 fractional bits |
| 1476 | return (x + (1 << 5)) & ~(1024 - 1); |
| 1477 | #endif |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1478 | } |
| 1479 | |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1480 | //#define SK_GAMMA_SRGB |
| 1481 | #ifndef SK_GAMMA_CONTRAST |
| 1482 | /** |
| 1483 | * A value of 0.5 for SK_GAMMA_CONTRAST appears to be a good compromise. |
| 1484 | * With lower values small text appears washed out (though correctly so). |
| 1485 | * With higher values lcd fringing is worse and the smoothing effect of |
| 1486 | * partial coverage is diminished. |
| 1487 | */ |
| 1488 | #define SK_GAMMA_CONTRAST (0.5f) |
| 1489 | #endif |
| 1490 | #ifndef SK_GAMMA_EXPONENT |
| 1491 | #define SK_GAMMA_EXPONENT (2.2f) |
| 1492 | #endif |
| 1493 | |
reed@android.com | 36a4c2a | 2009-07-22 19:52:11 +0000 | [diff] [blame] | 1494 | void SkScalerContext::MakeRec(const SkPaint& paint, |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1495 | const SkMatrix* deviceMatrix, Rec* rec) { |
tomhudson@google.com | 8d43018 | 2011-06-06 19:11:19 +0000 | [diff] [blame] | 1496 | SkASSERT(deviceMatrix == NULL || !deviceMatrix->hasPerspective()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1497 | |
reed@google.com | 7d26c59 | 2011-06-13 13:01:10 +0000 | [diff] [blame] | 1498 | rec->fOrigFontID = SkTypeface::UniqueID(paint.getTypeface()); |
| 1499 | rec->fFontID = rec->fOrigFontID; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1500 | rec->fTextSize = paint.getTextSize(); |
| 1501 | rec->fPreScaleX = paint.getTextScaleX(); |
| 1502 | rec->fPreSkewX = paint.getTextSkewX(); |
| 1503 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1504 | if (deviceMatrix) { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1505 | rec->fPost2x2[0][0] = sk_relax(deviceMatrix->getScaleX()); |
| 1506 | rec->fPost2x2[0][1] = sk_relax(deviceMatrix->getSkewX()); |
| 1507 | rec->fPost2x2[1][0] = sk_relax(deviceMatrix->getSkewY()); |
| 1508 | rec->fPost2x2[1][1] = sk_relax(deviceMatrix->getScaleY()); |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1509 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1510 | rec->fPost2x2[0][0] = rec->fPost2x2[1][1] = SK_Scalar1; |
| 1511 | rec->fPost2x2[0][1] = rec->fPost2x2[1][0] = 0; |
| 1512 | } |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 1513 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1514 | SkPaint::Style style = paint.getStyle(); |
| 1515 | SkScalar strokeWidth = paint.getStrokeWidth(); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 1516 | |
reed@google.com | ffe49f5 | 2011-11-22 19:42:41 +0000 | [diff] [blame] | 1517 | unsigned flags = 0; |
senorblanco@chromium.org | 4526a84 | 2010-02-05 23:08:20 +0000 | [diff] [blame] | 1518 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1519 | if (paint.isFakeBoldText()) { |
senorblanco@chromium.org | 4526a84 | 2010-02-05 23:08:20 +0000 | [diff] [blame] | 1520 | #ifdef SK_USE_FREETYPE_EMBOLDEN |
| 1521 | flags |= SkScalerContext::kEmbolden_Flag; |
| 1522 | #else |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 1523 | SkScalar fakeBoldScale = SkScalarInterpFunc(paint.getTextSize(), |
| 1524 | kStdFakeBoldInterpKeys, |
| 1525 | kStdFakeBoldInterpValues, |
| 1526 | kStdFakeBoldInterpLength); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1527 | SkScalar extra = SkScalarMul(paint.getTextSize(), fakeBoldScale); |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 1528 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1529 | if (style == SkPaint::kFill_Style) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1530 | style = SkPaint::kStrokeAndFill_Style; |
| 1531 | strokeWidth = extra; // ignore paint's strokeWidth if it was "fill" |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1532 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1533 | strokeWidth += extra; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1534 | } |
senorblanco@chromium.org | 4526a84 | 2010-02-05 23:08:20 +0000 | [diff] [blame] | 1535 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1536 | } |
| 1537 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1538 | if (paint.isDevKernText()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1539 | flags |= SkScalerContext::kDevKernText_Flag; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1540 | } |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 1541 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1542 | if (style != SkPaint::kFill_Style && strokeWidth > 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1543 | rec->fFrameWidth = strokeWidth; |
| 1544 | rec->fMiterLimit = paint.getStrokeMiter(); |
| 1545 | rec->fStrokeJoin = SkToU8(paint.getStrokeJoin()); |
| 1546 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1547 | if (style == SkPaint::kStrokeAndFill_Style) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1548 | flags |= SkScalerContext::kFrameAndFill_Flag; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1549 | } |
| 1550 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1551 | rec->fFrameWidth = 0; |
| 1552 | rec->fMiterLimit = 0; |
| 1553 | rec->fStrokeJoin = 0; |
| 1554 | } |
| 1555 | |
reed@google.com | 02b5331 | 2011-05-18 19:00:53 +0000 | [diff] [blame] | 1556 | rec->fMaskFormat = SkToU8(computeMaskFormat(paint)); |
| 1557 | |
caryclark@google.com | 1eeaf0b | 2011-06-22 13:19:43 +0000 | [diff] [blame] | 1558 | if (SkMask::kLCD16_Format == rec->fMaskFormat || |
| 1559 | SkMask::kLCD32_Format == rec->fMaskFormat) |
| 1560 | { |
reed@google.com | 02b5331 | 2011-05-18 19:00:53 +0000 | [diff] [blame] | 1561 | SkFontHost::LCDOrder order = SkFontHost::GetSubpixelOrder(); |
| 1562 | SkFontHost::LCDOrientation orient = SkFontHost::GetSubpixelOrientation(); |
reed@google.com | 4f79b9b | 2011-09-13 13:23:26 +0000 | [diff] [blame] | 1563 | if (SkFontHost::kNONE_LCDOrder == order || tooBigForLCD(*rec)) { |
reed@google.com | 02b5331 | 2011-05-18 19:00:53 +0000 | [diff] [blame] | 1564 | // eeek, can't support LCD |
| 1565 | rec->fMaskFormat = SkMask::kA8_Format; |
| 1566 | } else { |
| 1567 | if (SkFontHost::kVertical_LCDOrientation == orient) { |
| 1568 | flags |= SkScalerContext::kLCD_Vertical_Flag; |
| 1569 | } |
| 1570 | if (SkFontHost::kBGR_LCDOrder == order) { |
| 1571 | flags |= SkScalerContext::kLCD_BGROrder_Flag; |
| 1572 | } |
| 1573 | } |
| 1574 | } |
| 1575 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1576 | if (paint.isEmbeddedBitmapText()) { |
reed@google.com | 02b5331 | 2011-05-18 19:00:53 +0000 | [diff] [blame] | 1577 | flags |= SkScalerContext::kEmbeddedBitmapText_Flag; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1578 | } |
| 1579 | if (paint.isSubpixelText()) { |
reed@google.com | 02b5331 | 2011-05-18 19:00:53 +0000 | [diff] [blame] | 1580 | flags |= SkScalerContext::kSubpixelPositioning_Flag; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1581 | } |
| 1582 | if (paint.isAutohinted()) { |
reed@google.com | 02b5331 | 2011-05-18 19:00:53 +0000 | [diff] [blame] | 1583 | flags |= SkScalerContext::kAutohinting_Flag; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1584 | } |
reed@google.com | 830a23e | 2011-11-10 15:20:49 +0000 | [diff] [blame] | 1585 | if (paint.isVerticalText()) { |
| 1586 | flags |= SkScalerContext::kVertical_Flag; |
| 1587 | } |
reed@google.com | 8351aab | 2012-01-18 17:06:35 +0000 | [diff] [blame] | 1588 | if (paint.getFlags() & SkPaint::kGenA8FromLCD_Flag) { |
| 1589 | flags |= SkScalerContext::kGenA8FromLCD_Flag; |
| 1590 | } |
reed@google.com | 02b5331 | 2011-05-18 19:00:53 +0000 | [diff] [blame] | 1591 | rec->fFlags = SkToU16(flags); |
reed@android.com | 36a4c2a | 2009-07-22 19:52:11 +0000 | [diff] [blame] | 1592 | |
reed@google.com | ffe49f5 | 2011-11-22 19:42:41 +0000 | [diff] [blame] | 1593 | // these modify fFlags, so do them after assigning fFlags |
reed@google.com | 9d75767 | 2011-05-18 21:14:39 +0000 | [diff] [blame] | 1594 | rec->setHinting(computeHinting(paint)); |
| 1595 | |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1596 | rec->setLuminanceColor(computeLuminanceColor(paint)); |
| 1597 | #ifdef SK_GAMMA_SRGB |
| 1598 | rec->setDeviceGamma(0); |
| 1599 | rec->setPaintGamma(0); |
| 1600 | #else |
| 1601 | rec->setDeviceGamma(SkFloatToScalar(SK_GAMMA_EXPONENT)); |
| 1602 | rec->setPaintGamma(SkFloatToScalar(SK_GAMMA_EXPONENT)); |
| 1603 | #endif |
| 1604 | rec->setContrast(SkFloatToScalar(SK_GAMMA_CONTRAST)); |
bungeman@google.com | 2bf82d8 | 2012-08-02 10:06:19 +0000 | [diff] [blame] | 1605 | rec->fReservedAlign = 0; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1606 | |
reed@android.com | 36a4c2a | 2009-07-22 19:52:11 +0000 | [diff] [blame] | 1607 | /* Allow the fonthost to modify our rec before we use it as a key into the |
| 1608 | cache. This way if we're asking for something that they will ignore, |
| 1609 | they can modify our rec up front, so we don't create duplicate cache |
| 1610 | entries. |
| 1611 | */ |
| 1612 | SkFontHost::FilterRec(rec); |
reed@google.com | 3e8ae5b | 2011-09-28 15:32:20 +0000 | [diff] [blame] | 1613 | |
reed@google.com | 10d2d4d | 2012-03-01 22:32:51 +0000 | [diff] [blame] | 1614 | // be sure to call PostMakeRec(rec) before you actually use it! |
| 1615 | } |
| 1616 | |
| 1617 | /** |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1618 | * In order to call cachedDeviceLuminance, cachedPaintLuminance, or |
| 1619 | * cachedMaskGamma the caller must hold the gMaskGammaCacheMutex and continue |
| 1620 | * to hold it until the returned pointer is refed or forgotten. |
| 1621 | */ |
| 1622 | SK_DECLARE_STATIC_MUTEX(gMaskGammaCacheMutex); |
| 1623 | |
bungeman@google.com | ae30f56 | 2012-09-11 18:44:55 +0000 | [diff] [blame^] | 1624 | static SkColorSpaceLuminance* gLinearLuminance = NULL; |
| 1625 | |
bungeman@google.com | b24b4fa | 2012-09-04 13:49:59 +0000 | [diff] [blame] | 1626 | static SkColorSpaceLuminance* gDeviceLuminance = NULL; |
| 1627 | static SkScalar gDeviceGammaExponent = SK_ScalarMin; |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1628 | /** |
| 1629 | * The caller must hold the gMaskGammaCacheMutex and continue to hold it until |
bungeman@google.com | b24b4fa | 2012-09-04 13:49:59 +0000 | [diff] [blame] | 1630 | * the returned SkColorSpaceLuminance pointer is forgotten. |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1631 | */ |
| 1632 | static SkColorSpaceLuminance* cachedDeviceLuminance(SkScalar gammaExponent) { |
bungeman@google.com | ae30f56 | 2012-09-11 18:44:55 +0000 | [diff] [blame^] | 1633 | if (SK_Scalar1 == gammaExponent) { |
| 1634 | if (NULL == gLinearLuminance) { |
| 1635 | gLinearLuminance = SkNEW(SkLinearLuminance); |
| 1636 | } |
| 1637 | return gLinearLuminance; |
| 1638 | } |
bungeman@google.com | b24b4fa | 2012-09-04 13:49:59 +0000 | [diff] [blame] | 1639 | if (gDeviceGammaExponent != gammaExponent) { |
| 1640 | SkDELETE(gDeviceLuminance); |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1641 | if (0 == gammaExponent) { |
| 1642 | gDeviceLuminance = SkNEW(SkSRGBLuminance); |
| 1643 | } else { |
| 1644 | gDeviceLuminance = SkNEW_ARGS(SkGammaLuminance, (gammaExponent)); |
| 1645 | } |
bungeman@google.com | b24b4fa | 2012-09-04 13:49:59 +0000 | [diff] [blame] | 1646 | gDeviceGammaExponent = gammaExponent; |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1647 | } |
| 1648 | return gDeviceLuminance; |
| 1649 | } |
| 1650 | |
bungeman@google.com | b24b4fa | 2012-09-04 13:49:59 +0000 | [diff] [blame] | 1651 | static SkColorSpaceLuminance* gPaintLuminance = NULL; |
| 1652 | static SkScalar gPaintGammaExponent = SK_ScalarMin; |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1653 | /** |
| 1654 | * The caller must hold the gMaskGammaCacheMutex and continue to hold it until |
bungeman@google.com | b24b4fa | 2012-09-04 13:49:59 +0000 | [diff] [blame] | 1655 | * the returned SkColorSpaceLuminance pointer is forgotten. |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1656 | */ |
| 1657 | static SkColorSpaceLuminance* cachedPaintLuminance(SkScalar gammaExponent) { |
bungeman@google.com | ae30f56 | 2012-09-11 18:44:55 +0000 | [diff] [blame^] | 1658 | if (SK_Scalar1 == gammaExponent) { |
| 1659 | if (NULL == gLinearLuminance) { |
| 1660 | gLinearLuminance = SkNEW(SkLinearLuminance); |
| 1661 | } |
| 1662 | return gLinearLuminance; |
| 1663 | } |
bungeman@google.com | b24b4fa | 2012-09-04 13:49:59 +0000 | [diff] [blame] | 1664 | if (gPaintGammaExponent != gammaExponent) { |
| 1665 | SkDELETE(gPaintLuminance); |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1666 | if (0 == gammaExponent) { |
| 1667 | gPaintLuminance = SkNEW(SkSRGBLuminance); |
| 1668 | } else { |
| 1669 | gPaintLuminance = SkNEW_ARGS(SkGammaLuminance, (gammaExponent)); |
| 1670 | } |
bungeman@google.com | b24b4fa | 2012-09-04 13:49:59 +0000 | [diff] [blame] | 1671 | gPaintGammaExponent = gammaExponent; |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1672 | } |
| 1673 | return gPaintLuminance; |
| 1674 | } |
| 1675 | |
bungeman@google.com | ae30f56 | 2012-09-11 18:44:55 +0000 | [diff] [blame^] | 1676 | static SkMaskGamma* gLinearMaskGamma = NULL; |
bungeman@google.com | b24b4fa | 2012-09-04 13:49:59 +0000 | [diff] [blame] | 1677 | static SkMaskGamma* gMaskGamma = NULL; |
| 1678 | static SkScalar gContrast = SK_ScalarMin; |
| 1679 | static SkScalar gPaintGamma = SK_ScalarMin; |
| 1680 | static SkScalar gDeviceGamma = SK_ScalarMin; |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1681 | /** |
| 1682 | * The caller must hold the gMaskGammaCacheMutex and continue to hold it until |
| 1683 | * the returned SkMaskGamma pointer is refed or forgotten. |
| 1684 | */ |
| 1685 | static SkMaskGamma* cachedMaskGamma(SkScalar contrast, SkScalar paintGamma, SkScalar deviceGamma) { |
bungeman@google.com | ae30f56 | 2012-09-11 18:44:55 +0000 | [diff] [blame^] | 1686 | if (0 == contrast && SK_Scalar1 == paintGamma && SK_Scalar1 == deviceGamma) { |
| 1687 | if (NULL == gLinearMaskGamma) { |
| 1688 | gLinearMaskGamma = SkNEW(SkMaskGamma); |
| 1689 | } |
| 1690 | return gLinearMaskGamma; |
| 1691 | } |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1692 | if (gContrast != contrast || gPaintGamma != paintGamma || gDeviceGamma != deviceGamma) { |
| 1693 | SkSafeUnref(gMaskGamma); |
| 1694 | SkColorSpaceLuminance* paintLuminance = cachedPaintLuminance(paintGamma); |
| 1695 | SkColorSpaceLuminance* deviceLuminance = cachedDeviceLuminance(deviceGamma); |
| 1696 | gMaskGamma = SkNEW_ARGS(SkMaskGamma, (contrast, *paintLuminance, *deviceLuminance)); |
| 1697 | gContrast = contrast; |
| 1698 | gPaintGamma = paintGamma; |
| 1699 | gDeviceGamma = deviceGamma; |
| 1700 | } |
| 1701 | return gMaskGamma; |
| 1702 | } |
| 1703 | |
bungeman@google.com | b24b4fa | 2012-09-04 13:49:59 +0000 | [diff] [blame] | 1704 | /*static*/ void SkPaint::Term() { |
| 1705 | SkAutoMutexAcquire ama(gMaskGammaCacheMutex); |
| 1706 | |
bungeman@google.com | ae30f56 | 2012-09-11 18:44:55 +0000 | [diff] [blame^] | 1707 | SkSafeUnref(gLinearMaskGamma); |
| 1708 | |
bungeman@google.com | b24b4fa | 2012-09-04 13:49:59 +0000 | [diff] [blame] | 1709 | SkSafeUnref(gMaskGamma); |
| 1710 | SkDEBUGCODE(gContrast = SK_ScalarMin;) |
| 1711 | SkDEBUGCODE(gPaintGamma = SK_ScalarMin;) |
| 1712 | SkDEBUGCODE(gDeviceGamma = SK_ScalarMin;) |
| 1713 | |
bungeman@google.com | ae30f56 | 2012-09-11 18:44:55 +0000 | [diff] [blame^] | 1714 | SkDELETE(gLinearLuminance); |
| 1715 | |
bungeman@google.com | b24b4fa | 2012-09-04 13:49:59 +0000 | [diff] [blame] | 1716 | SkDELETE(gPaintLuminance); |
| 1717 | SkDEBUGCODE(gPaintLuminance = NULL;) |
| 1718 | SkDEBUGCODE(gPaintGammaExponent = SK_ScalarMin;) |
| 1719 | |
| 1720 | SkDELETE(gDeviceLuminance); |
| 1721 | SkDEBUGCODE(gDeviceLuminance = NULL;) |
| 1722 | SkDEBUGCODE(gDeviceGammaExponent = SK_ScalarMin;) |
| 1723 | } |
| 1724 | |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1725 | /** |
reed@google.com | 10d2d4d | 2012-03-01 22:32:51 +0000 | [diff] [blame] | 1726 | * We ensure that the rec is self-consistent and efficient (where possible) |
| 1727 | */ |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1728 | void SkScalerContext::PostMakeRec(const SkPaint& paint, SkScalerContext::Rec* rec) { |
reed@google.com | 10d2d4d | 2012-03-01 22:32:51 +0000 | [diff] [blame] | 1729 | /** |
| 1730 | * If we're asking for A8, we force the colorlum to be gray, since that |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1731 | * limits the number of unique entries, and the scaler will only look at |
| 1732 | * the lum of one of them. |
reed@google.com | 10d2d4d | 2012-03-01 22:32:51 +0000 | [diff] [blame] | 1733 | */ |
reed@google.com | dd43df9 | 2012-02-15 14:50:29 +0000 | [diff] [blame] | 1734 | switch (rec->fMaskFormat) { |
| 1735 | case SkMask::kLCD16_Format: |
| 1736 | case SkMask::kLCD32_Format: { |
reed@google.com | dd43df9 | 2012-02-15 14:50:29 +0000 | [diff] [blame] | 1737 | // filter down the luminance color to a finite number of bits |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1738 | SkColor color = rec->getLuminanceColor(); |
bungeman@google.com | ae30f56 | 2012-09-11 18:44:55 +0000 | [diff] [blame^] | 1739 | rec->setLuminanceColor(SkMaskGamma::cannonicalColor(color)); |
reed@google.com | dd43df9 | 2012-02-15 14:50:29 +0000 | [diff] [blame] | 1740 | break; |
| 1741 | } |
| 1742 | case SkMask::kA8_Format: { |
reed@google.com | dd43df9 | 2012-02-15 14:50:29 +0000 | [diff] [blame] | 1743 | // filter down the luminance to a single component, since A8 can't |
| 1744 | // use per-component information |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1745 | |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1746 | SkColor color = rec->getLuminanceColor(); |
| 1747 | SkAutoMutexAcquire ama(gMaskGammaCacheMutex); |
| 1748 | U8CPU lum = cachedPaintLuminance(rec->getPaintGamma())->computeLuminance(color); |
bungeman@google.com | fd668cf | 2012-08-24 17:46:11 +0000 | [diff] [blame] | 1749 | //If we are asked to look like LCD, look like LCD. |
| 1750 | if (!(rec->fFlags & SkScalerContext::kGenA8FromLCD_Flag)) { |
| 1751 | // HACK: Prevents green from being pre-blended as white. |
| 1752 | lum -= ((255 - lum) * lum) / 255; |
| 1753 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1754 | |
reed@google.com | dd43df9 | 2012-02-15 14:50:29 +0000 | [diff] [blame] | 1755 | // reduce to our finite number of bits |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1756 | color = SkColorSetRGB(lum, lum, lum); |
bungeman@google.com | ae30f56 | 2012-09-11 18:44:55 +0000 | [diff] [blame^] | 1757 | rec->setLuminanceColor(SkMaskGamma::cannonicalColor(color)); |
reed@google.com | dd43df9 | 2012-02-15 14:50:29 +0000 | [diff] [blame] | 1758 | break; |
| 1759 | } |
| 1760 | case SkMask::kBW_Format: |
| 1761 | // No need to differentiate gamma if we're BW |
reed@google.com | dd43df9 | 2012-02-15 14:50:29 +0000 | [diff] [blame] | 1762 | rec->setLuminanceColor(0); |
reed@google.com | dd43df9 | 2012-02-15 14:50:29 +0000 | [diff] [blame] | 1763 | break; |
reed@google.com | 3e8ae5b | 2011-09-28 15:32:20 +0000 | [diff] [blame] | 1764 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1765 | } |
| 1766 | |
| 1767 | #define MIN_SIZE_FOR_EFFECT_BUFFER 1024 |
| 1768 | |
reed@google.com | 17fb387 | 2011-05-04 14:31:07 +0000 | [diff] [blame] | 1769 | #ifdef SK_DEBUG |
| 1770 | #define TEST_DESC |
| 1771 | #endif |
| 1772 | |
reed@google.com | ffe49f5 | 2011-11-22 19:42:41 +0000 | [diff] [blame] | 1773 | /* |
| 1774 | * ignoreGamma tells us that the caller just wants metrics that are unaffected |
| 1775 | * by gamma correction, so we jam the luminance field to 0 (most common value |
| 1776 | * for black text) in hopes that we get a cache hit easier. A better solution |
| 1777 | * would be for the fontcache lookup to know to ignore the luminance field |
| 1778 | * entirely, but not sure how to do that and keep it fast. |
| 1779 | */ |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1780 | void SkPaint::descriptorProc(const SkMatrix* deviceMatrix, |
| 1781 | void (*proc)(const SkDescriptor*, void*), |
djsollen@google.com | 57f4969 | 2011-02-23 20:46:31 +0000 | [diff] [blame] | 1782 | void* context, bool ignoreGamma) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1783 | SkScalerContext::Rec rec; |
| 1784 | |
| 1785 | SkScalerContext::MakeRec(*this, deviceMatrix, &rec); |
djsollen@google.com | 57f4969 | 2011-02-23 20:46:31 +0000 | [diff] [blame] | 1786 | if (ignoreGamma) { |
reed@google.com | ce6dbb6 | 2012-02-10 22:01:45 +0000 | [diff] [blame] | 1787 | rec.setLuminanceColor(0); |
djsollen@google.com | 57f4969 | 2011-02-23 20:46:31 +0000 | [diff] [blame] | 1788 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1789 | |
| 1790 | size_t descSize = sizeof(rec); |
| 1791 | int entryCount = 1; |
| 1792 | SkPathEffect* pe = this->getPathEffect(); |
| 1793 | SkMaskFilter* mf = this->getMaskFilter(); |
| 1794 | SkRasterizer* ra = this->getRasterizer(); |
| 1795 | |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 1796 | SkOrderedWriteBuffer peBuffer(MIN_SIZE_FOR_EFFECT_BUFFER); |
| 1797 | SkOrderedWriteBuffer mfBuffer(MIN_SIZE_FOR_EFFECT_BUFFER); |
| 1798 | SkOrderedWriteBuffer raBuffer(MIN_SIZE_FOR_EFFECT_BUFFER); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1799 | |
| 1800 | if (pe) { |
| 1801 | peBuffer.writeFlattenable(pe); |
| 1802 | descSize += peBuffer.size(); |
| 1803 | entryCount += 1; |
| 1804 | rec.fMaskFormat = SkMask::kA8_Format; // force antialiasing when we do the scan conversion |
| 1805 | // seems like we could support kLCD as well at this point... |
| 1806 | } |
| 1807 | if (mf) { |
| 1808 | mfBuffer.writeFlattenable(mf); |
| 1809 | descSize += mfBuffer.size(); |
| 1810 | entryCount += 1; |
| 1811 | rec.fMaskFormat = SkMask::kA8_Format; // force antialiasing with maskfilters |
| 1812 | } |
| 1813 | if (ra) { |
| 1814 | raBuffer.writeFlattenable(ra); |
| 1815 | descSize += raBuffer.size(); |
| 1816 | entryCount += 1; |
| 1817 | rec.fMaskFormat = SkMask::kA8_Format; // force antialiasing when we do the scan conversion |
| 1818 | } |
reed@google.com | 10d2d4d | 2012-03-01 22:32:51 +0000 | [diff] [blame] | 1819 | |
| 1820 | /////////////////////////////////////////////////////////////////////////// |
| 1821 | // Now that we're done tweaking the rec, call the PostMakeRec cleanup |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1822 | SkScalerContext::PostMakeRec(*this, &rec); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1823 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1824 | descSize += SkDescriptor::ComputeOverhead(entryCount); |
| 1825 | |
| 1826 | SkAutoDescriptor ad(descSize); |
| 1827 | SkDescriptor* desc = ad.getDesc(); |
| 1828 | |
| 1829 | desc->init(); |
| 1830 | desc->addEntry(kRec_SkDescriptorTag, sizeof(rec), &rec); |
| 1831 | |
| 1832 | if (pe) { |
| 1833 | add_flattenable(desc, kPathEffect_SkDescriptorTag, &peBuffer); |
| 1834 | } |
| 1835 | if (mf) { |
| 1836 | add_flattenable(desc, kMaskFilter_SkDescriptorTag, &mfBuffer); |
| 1837 | } |
| 1838 | if (ra) { |
| 1839 | add_flattenable(desc, kRasterizer_SkDescriptorTag, &raBuffer); |
| 1840 | } |
| 1841 | |
| 1842 | SkASSERT(descSize == desc->getLength()); |
| 1843 | desc->computeChecksum(); |
| 1844 | |
reed@google.com | 17fb387 | 2011-05-04 14:31:07 +0000 | [diff] [blame] | 1845 | #ifdef TEST_DESC |
| 1846 | { |
| 1847 | // Check that we completely write the bytes in desc (our key), and that |
| 1848 | // there are no uninitialized bytes. If there were, then we would get |
| 1849 | // false-misses (or worse, false-hits) in our fontcache. |
| 1850 | // |
| 1851 | // We do this buy filling 2 others, one with 0s and the other with 1s |
| 1852 | // and create those, and then check that all 3 are identical. |
| 1853 | SkAutoDescriptor ad1(descSize); |
| 1854 | SkAutoDescriptor ad2(descSize); |
| 1855 | SkDescriptor* desc1 = ad1.getDesc(); |
| 1856 | SkDescriptor* desc2 = ad2.getDesc(); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1857 | |
reed@google.com | 17fb387 | 2011-05-04 14:31:07 +0000 | [diff] [blame] | 1858 | memset(desc1, 0x00, descSize); |
| 1859 | memset(desc2, 0xFF, descSize); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1860 | |
reed@google.com | 17fb387 | 2011-05-04 14:31:07 +0000 | [diff] [blame] | 1861 | desc1->init(); |
| 1862 | desc2->init(); |
| 1863 | desc1->addEntry(kRec_SkDescriptorTag, sizeof(rec), &rec); |
| 1864 | desc2->addEntry(kRec_SkDescriptorTag, sizeof(rec), &rec); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1865 | |
reed@google.com | 17fb387 | 2011-05-04 14:31:07 +0000 | [diff] [blame] | 1866 | if (pe) { |
| 1867 | add_flattenable(desc1, kPathEffect_SkDescriptorTag, &peBuffer); |
| 1868 | add_flattenable(desc2, kPathEffect_SkDescriptorTag, &peBuffer); |
| 1869 | } |
| 1870 | if (mf) { |
| 1871 | add_flattenable(desc1, kMaskFilter_SkDescriptorTag, &mfBuffer); |
| 1872 | add_flattenable(desc2, kMaskFilter_SkDescriptorTag, &mfBuffer); |
| 1873 | } |
| 1874 | if (ra) { |
| 1875 | add_flattenable(desc1, kRasterizer_SkDescriptorTag, &raBuffer); |
| 1876 | add_flattenable(desc2, kRasterizer_SkDescriptorTag, &raBuffer); |
| 1877 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1878 | |
reed@google.com | 17fb387 | 2011-05-04 14:31:07 +0000 | [diff] [blame] | 1879 | SkASSERT(descSize == desc1->getLength()); |
| 1880 | SkASSERT(descSize == desc2->getLength()); |
| 1881 | desc1->computeChecksum(); |
| 1882 | desc2->computeChecksum(); |
| 1883 | SkASSERT(!memcmp(desc, desc1, descSize)); |
| 1884 | SkASSERT(!memcmp(desc, desc2, descSize)); |
| 1885 | } |
| 1886 | #endif |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1887 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1888 | proc(desc, context); |
| 1889 | } |
| 1890 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 1891 | SkGlyphCache* SkPaint::detachCache(const SkMatrix* deviceMatrix) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1892 | SkGlyphCache* cache; |
| 1893 | this->descriptorProc(deviceMatrix, DetachDescProc, &cache); |
| 1894 | return cache; |
| 1895 | } |
| 1896 | |
bungeman@google.com | 97efada | 2012-07-30 20:40:50 +0000 | [diff] [blame] | 1897 | /** |
| 1898 | * Expands fDeviceGamma, fPaintGamma, fContrast, and fLumBits into a mask pre-blend. |
| 1899 | */ |
| 1900 | //static |
| 1901 | SkMaskGamma::PreBlend SkScalerContext::GetMaskPreBlend(const SkScalerContext::Rec& rec) { |
| 1902 | SkAutoMutexAcquire ama(gMaskGammaCacheMutex); |
| 1903 | SkMaskGamma* maskGamma = cachedMaskGamma(rec.getContrast(), |
| 1904 | rec.getPaintGamma(), |
| 1905 | rec.getDeviceGamma()); |
| 1906 | return maskGamma->preBlend(rec.getLuminanceColor()); |
| 1907 | } |
| 1908 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1909 | /////////////////////////////////////////////////////////////////////////////// |
| 1910 | |
| 1911 | #include "SkStream.h" |
| 1912 | |
reed@android.com | aefd2bc | 2009-03-30 21:02:14 +0000 | [diff] [blame] | 1913 | static uintptr_t asint(const void* p) { |
| 1914 | return reinterpret_cast<uintptr_t>(p); |
| 1915 | } |
| 1916 | |
| 1917 | union Scalar32 { |
| 1918 | SkScalar fScalar; |
| 1919 | uint32_t f32; |
| 1920 | }; |
| 1921 | |
| 1922 | static uint32_t* write_scalar(uint32_t* ptr, SkScalar value) { |
| 1923 | SkASSERT(sizeof(SkScalar) == sizeof(uint32_t)); |
| 1924 | Scalar32 tmp; |
| 1925 | tmp.fScalar = value; |
| 1926 | *ptr = tmp.f32; |
| 1927 | return ptr + 1; |
| 1928 | } |
| 1929 | |
| 1930 | static SkScalar read_scalar(const uint32_t*& ptr) { |
| 1931 | SkASSERT(sizeof(SkScalar) == sizeof(uint32_t)); |
| 1932 | Scalar32 tmp; |
| 1933 | tmp.f32 = *ptr++; |
| 1934 | return tmp.fScalar; |
| 1935 | } |
| 1936 | |
| 1937 | static uint32_t pack_4(unsigned a, unsigned b, unsigned c, unsigned d) { |
| 1938 | SkASSERT(a == (uint8_t)a); |
| 1939 | SkASSERT(b == (uint8_t)b); |
| 1940 | SkASSERT(c == (uint8_t)c); |
| 1941 | SkASSERT(d == (uint8_t)d); |
| 1942 | return (a << 24) | (b << 16) | (c << 8) | d; |
| 1943 | } |
| 1944 | |
| 1945 | enum FlatFlags { |
| 1946 | kHasTypeface_FlatFlag = 0x01, |
reed@google.com | b0a34d8 | 2012-07-11 19:57:55 +0000 | [diff] [blame] | 1947 | kHasEffects_FlatFlag = 0x02, |
reed@android.com | aefd2bc | 2009-03-30 21:02:14 +0000 | [diff] [blame] | 1948 | }; |
| 1949 | |
| 1950 | // The size of a flat paint's POD fields |
| 1951 | static const uint32_t kPODPaintSize = 5 * sizeof(SkScalar) + |
| 1952 | 1 * sizeof(SkColor) + |
| 1953 | 1 * sizeof(uint16_t) + |
| 1954 | 6 * sizeof(uint8_t); |
| 1955 | |
| 1956 | /* To save space/time, we analyze the paint, and write a truncated version of |
| 1957 | it if there are not tricky elements like shaders, etc. |
| 1958 | */ |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1959 | void SkPaint::flatten(SkFlattenableWriteBuffer& buffer) const { |
reed@android.com | aefd2bc | 2009-03-30 21:02:14 +0000 | [diff] [blame] | 1960 | uint8_t flatFlags = 0; |
| 1961 | if (this->getTypeface()) { |
| 1962 | flatFlags |= kHasTypeface_FlatFlag; |
| 1963 | } |
| 1964 | if (asint(this->getPathEffect()) | |
| 1965 | asint(this->getShader()) | |
| 1966 | asint(this->getXfermode()) | |
| 1967 | asint(this->getMaskFilter()) | |
| 1968 | asint(this->getColorFilter()) | |
| 1969 | asint(this->getRasterizer()) | |
senorblanco@chromium.org | 54e01b2 | 2011-11-16 18:20:47 +0000 | [diff] [blame] | 1970 | asint(this->getLooper()) | |
reed@google.com | b0a34d8 | 2012-07-11 19:57:55 +0000 | [diff] [blame] | 1971 | asint(this->getAnnotation()) | |
senorblanco@chromium.org | 54e01b2 | 2011-11-16 18:20:47 +0000 | [diff] [blame] | 1972 | asint(this->getImageFilter())) { |
reed@android.com | aefd2bc | 2009-03-30 21:02:14 +0000 | [diff] [blame] | 1973 | flatFlags |= kHasEffects_FlatFlag; |
| 1974 | } |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 1975 | |
reed@android.com | aefd2bc | 2009-03-30 21:02:14 +0000 | [diff] [blame] | 1976 | |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1977 | if (buffer.isOrderedBinaryBuffer()) { |
| 1978 | SkASSERT(SkAlign4(kPODPaintSize) == kPODPaintSize); |
| 1979 | uint32_t* ptr = buffer.getOrderedBinaryBuffer()->reserve(kPODPaintSize); |
| 1980 | |
| 1981 | ptr = write_scalar(ptr, this->getTextSize()); |
| 1982 | ptr = write_scalar(ptr, this->getTextScaleX()); |
| 1983 | ptr = write_scalar(ptr, this->getTextSkewX()); |
| 1984 | ptr = write_scalar(ptr, this->getStrokeWidth()); |
| 1985 | ptr = write_scalar(ptr, this->getStrokeMiter()); |
| 1986 | *ptr++ = this->getColor(); |
| 1987 | // previously flags:16, textAlign:8, flatFlags:8 |
| 1988 | // now flags:16, hinting:4, textAlign:4, flatFlags:8 |
| 1989 | *ptr++ = (this->getFlags() << 16) | |
| 1990 | // hinting added later. 0 in this nibble means use the default. |
| 1991 | ((this->getHinting()+1) << 12) | |
| 1992 | (this->getTextAlign() << 8) | |
| 1993 | flatFlags; |
| 1994 | *ptr++ = pack_4(this->getStrokeCap(), this->getStrokeJoin(), |
| 1995 | this->getStyle(), this->getTextEncoding()); |
| 1996 | } else { |
| 1997 | buffer.writeScalar(fTextSize); |
| 1998 | buffer.writeScalar(fTextScaleX); |
| 1999 | buffer.writeScalar(fTextSkewX); |
| 2000 | buffer.writeScalar(fWidth); |
| 2001 | buffer.writeScalar(fMiterLimit); |
| 2002 | buffer.writeColor(fColor); |
| 2003 | buffer.writeUInt(fFlags); |
| 2004 | buffer.writeUInt(fHinting); |
| 2005 | buffer.writeUInt(fTextAlign); |
| 2006 | buffer.writeUInt(flatFlags); |
| 2007 | |
| 2008 | buffer.writeUInt(fCapType); |
| 2009 | buffer.writeUInt(fJoinType); |
| 2010 | buffer.writeUInt(fStyle); |
| 2011 | buffer.writeUInt(fTextEncoding); |
| 2012 | } |
reed@android.com | aefd2bc | 2009-03-30 21:02:14 +0000 | [diff] [blame] | 2013 | |
| 2014 | // now we're done with ptr and the (pre)reserved space. If we need to write |
| 2015 | // additional fields, use the buffer directly |
| 2016 | if (flatFlags & kHasTypeface_FlatFlag) { |
| 2017 | buffer.writeTypeface(this->getTypeface()); |
| 2018 | } |
| 2019 | if (flatFlags & kHasEffects_FlatFlag) { |
| 2020 | buffer.writeFlattenable(this->getPathEffect()); |
| 2021 | buffer.writeFlattenable(this->getShader()); |
| 2022 | buffer.writeFlattenable(this->getXfermode()); |
| 2023 | buffer.writeFlattenable(this->getMaskFilter()); |
| 2024 | buffer.writeFlattenable(this->getColorFilter()); |
| 2025 | buffer.writeFlattenable(this->getRasterizer()); |
| 2026 | buffer.writeFlattenable(this->getLooper()); |
senorblanco@chromium.org | 54e01b2 | 2011-11-16 18:20:47 +0000 | [diff] [blame] | 2027 | buffer.writeFlattenable(this->getImageFilter()); |
reed@google.com | b0a34d8 | 2012-07-11 19:57:55 +0000 | [diff] [blame] | 2028 | buffer.writeFlattenable(this->getAnnotation()); |
reed@android.com | aefd2bc | 2009-03-30 21:02:14 +0000 | [diff] [blame] | 2029 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2030 | } |
| 2031 | |
| 2032 | void SkPaint::unflatten(SkFlattenableReadBuffer& buffer) { |
reed@google.com | b0a34d8 | 2012-07-11 19:57:55 +0000 | [diff] [blame] | 2033 | fPrivFlags = 0; |
| 2034 | |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 2035 | uint8_t flatFlags = 0; |
| 2036 | if (buffer.isOrderedBinaryBuffer()) { |
| 2037 | SkASSERT(SkAlign4(kPODPaintSize) == kPODPaintSize); |
| 2038 | const void* podData = buffer.getOrderedBinaryBuffer()->skip(kPODPaintSize); |
| 2039 | const uint32_t* pod = reinterpret_cast<const uint32_t*>(podData); |
reed@android.com | aefd2bc | 2009-03-30 21:02:14 +0000 | [diff] [blame] | 2040 | |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 2041 | // the order we read must match the order we wrote in flatten() |
| 2042 | this->setTextSize(read_scalar(pod)); |
| 2043 | this->setTextScaleX(read_scalar(pod)); |
| 2044 | this->setTextSkewX(read_scalar(pod)); |
| 2045 | this->setStrokeWidth(read_scalar(pod)); |
| 2046 | this->setStrokeMiter(read_scalar(pod)); |
| 2047 | this->setColor(*pod++); |
bungeman@google.com | 24babf4 | 2011-11-07 16:33:40 +0000 | [diff] [blame] | 2048 | |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 2049 | // previously flags:16, textAlign:8, flatFlags:8 |
| 2050 | // now flags:16, hinting:4, textAlign:4, flatFlags:8 |
| 2051 | uint32_t tmp = *pod++; |
| 2052 | this->setFlags(tmp >> 16); |
bungeman@google.com | 24babf4 | 2011-11-07 16:33:40 +0000 | [diff] [blame] | 2053 | |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 2054 | // hinting added later. 0 in this nibble means use the default. |
| 2055 | uint32_t hinting = (tmp >> 12) & 0xF; |
| 2056 | this->setHinting(0 == hinting ? kNormal_Hinting : static_cast<Hinting>(hinting-1)); |
bungeman@google.com | 24babf4 | 2011-11-07 16:33:40 +0000 | [diff] [blame] | 2057 | |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 2058 | this->setTextAlign(static_cast<Align>((tmp >> 8) & 0xF)); |
reed@android.com | aefd2bc | 2009-03-30 21:02:14 +0000 | [diff] [blame] | 2059 | |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 2060 | flatFlags = tmp & 0xFF; |
| 2061 | |
| 2062 | tmp = *pod++; |
| 2063 | this->setStrokeCap(static_cast<Cap>((tmp >> 24) & 0xFF)); |
| 2064 | this->setStrokeJoin(static_cast<Join>((tmp >> 16) & 0xFF)); |
| 2065 | this->setStyle(static_cast<Style>((tmp >> 8) & 0xFF)); |
| 2066 | this->setTextEncoding(static_cast<TextEncoding>((tmp >> 0) & 0xFF)); |
| 2067 | } else { |
| 2068 | this->setTextSize(buffer.readScalar()); |
| 2069 | this->setTextScaleX(buffer.readScalar()); |
| 2070 | this->setTextSkewX(buffer.readScalar()); |
| 2071 | this->setStrokeWidth(buffer.readScalar()); |
| 2072 | this->setStrokeMiter(buffer.readScalar()); |
| 2073 | this->setColor(buffer.readColor()); |
| 2074 | this->setFlags(buffer.readUInt()); |
| 2075 | this->setHinting(static_cast<SkPaint::Hinting>(buffer.readUInt())); |
| 2076 | this->setTextAlign(static_cast<SkPaint::Align>(buffer.readUInt())); |
| 2077 | flatFlags = buffer.readUInt(); |
| 2078 | |
| 2079 | this->setStrokeCap(static_cast<SkPaint::Cap>(buffer.readUInt())); |
| 2080 | this->setStrokeJoin(static_cast<SkPaint::Join>(buffer.readUInt())); |
| 2081 | this->setStyle(static_cast<SkPaint::Style>(buffer.readUInt())); |
| 2082 | this->setTextEncoding(static_cast<SkPaint::TextEncoding>(buffer.readUInt())); |
| 2083 | } |
reed@android.com | aefd2bc | 2009-03-30 21:02:14 +0000 | [diff] [blame] | 2084 | |
| 2085 | if (flatFlags & kHasTypeface_FlatFlag) { |
| 2086 | this->setTypeface(buffer.readTypeface()); |
| 2087 | } else { |
| 2088 | this->setTypeface(NULL); |
| 2089 | } |
| 2090 | |
| 2091 | if (flatFlags & kHasEffects_FlatFlag) { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 2092 | SkSafeUnref(this->setPathEffect(buffer.readFlattenableT<SkPathEffect>())); |
| 2093 | SkSafeUnref(this->setShader(buffer.readFlattenableT<SkShader>())); |
| 2094 | SkSafeUnref(this->setXfermode(buffer.readFlattenableT<SkXfermode>())); |
| 2095 | SkSafeUnref(this->setMaskFilter(buffer.readFlattenableT<SkMaskFilter>())); |
| 2096 | SkSafeUnref(this->setColorFilter(buffer.readFlattenableT<SkColorFilter>())); |
| 2097 | SkSafeUnref(this->setRasterizer(buffer.readFlattenableT<SkRasterizer>())); |
| 2098 | SkSafeUnref(this->setLooper(buffer.readFlattenableT<SkDrawLooper>())); |
| 2099 | SkSafeUnref(this->setImageFilter(buffer.readFlattenableT<SkImageFilter>())); |
| 2100 | SkSafeUnref(this->setAnnotation(buffer.readFlattenableT<SkAnnotation>())); |
reed@android.com | aefd2bc | 2009-03-30 21:02:14 +0000 | [diff] [blame] | 2101 | } else { |
| 2102 | this->setPathEffect(NULL); |
| 2103 | this->setShader(NULL); |
| 2104 | this->setXfermode(NULL); |
| 2105 | this->setMaskFilter(NULL); |
| 2106 | this->setColorFilter(NULL); |
| 2107 | this->setRasterizer(NULL); |
| 2108 | this->setLooper(NULL); |
senorblanco@chromium.org | 54e01b2 | 2011-11-16 18:20:47 +0000 | [diff] [blame] | 2109 | this->setImageFilter(NULL); |
reed@android.com | aefd2bc | 2009-03-30 21:02:14 +0000 | [diff] [blame] | 2110 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2111 | } |
| 2112 | |
| 2113 | /////////////////////////////////////////////////////////////////////////////// |
| 2114 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 2115 | SkShader* SkPaint::setShader(SkShader* shader) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 2116 | GEN_ID_INC_EVAL(shader != fShader); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2117 | SkRefCnt_SafeAssign(fShader, shader); |
| 2118 | return shader; |
| 2119 | } |
| 2120 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 2121 | SkColorFilter* SkPaint::setColorFilter(SkColorFilter* filter) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 2122 | GEN_ID_INC_EVAL(filter != fColorFilter); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2123 | SkRefCnt_SafeAssign(fColorFilter, filter); |
| 2124 | return filter; |
| 2125 | } |
| 2126 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 2127 | SkXfermode* SkPaint::setXfermode(SkXfermode* mode) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 2128 | GEN_ID_INC_EVAL(mode != fXfermode); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2129 | SkRefCnt_SafeAssign(fXfermode, mode); |
| 2130 | return mode; |
| 2131 | } |
| 2132 | |
reed@android.com | 0baf193 | 2009-06-24 12:41:42 +0000 | [diff] [blame] | 2133 | SkXfermode* SkPaint::setXfermodeMode(SkXfermode::Mode mode) { |
reed@android.com | d66eef7 | 2009-06-24 12:29:16 +0000 | [diff] [blame] | 2134 | SkSafeUnref(fXfermode); |
| 2135 | fXfermode = SkXfermode::Create(mode); |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 2136 | GEN_ID_INC; |
reed@android.com | d66eef7 | 2009-06-24 12:29:16 +0000 | [diff] [blame] | 2137 | return fXfermode; |
| 2138 | } |
| 2139 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 2140 | SkPathEffect* SkPaint::setPathEffect(SkPathEffect* effect) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 2141 | GEN_ID_INC_EVAL(effect != fPathEffect); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2142 | SkRefCnt_SafeAssign(fPathEffect, effect); |
| 2143 | return effect; |
| 2144 | } |
| 2145 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 2146 | SkMaskFilter* SkPaint::setMaskFilter(SkMaskFilter* filter) { |
djsollen@google.com | f5dbe2f | 2011-04-15 13:41:26 +0000 | [diff] [blame] | 2147 | GEN_ID_INC_EVAL(filter != fMaskFilter); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2148 | SkRefCnt_SafeAssign(fMaskFilter, filter); |
| 2149 | return filter; |
| 2150 | } |
| 2151 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 2152 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2153 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 2154 | bool SkPaint::getFillPath(const SkPath& src, SkPath* dst) const { |
reed@google.com | fd4be26 | 2012-05-25 01:04:12 +0000 | [diff] [blame] | 2155 | SkStrokeRec rec(*this); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2156 | |
reed@google.com | fd4be26 | 2012-05-25 01:04:12 +0000 | [diff] [blame] | 2157 | const SkPath* srcPtr = &src; |
| 2158 | SkPath tmpPath; |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 2159 | |
reed@google.com | fd4be26 | 2012-05-25 01:04:12 +0000 | [diff] [blame] | 2160 | if (fPathEffect && fPathEffect->filterPath(&tmpPath, src, &rec)) { |
| 2161 | srcPtr = &tmpPath; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2162 | } |
| 2163 | |
reed@google.com | fd4be26 | 2012-05-25 01:04:12 +0000 | [diff] [blame] | 2164 | if (!rec.applyToPath(dst, *srcPtr)) { |
| 2165 | if (srcPtr == &tmpPath) { |
| 2166 | // If path's were copy-on-write, this trick would not be needed. |
| 2167 | // As it is, we want to save making a deep-copy from tmpPath -> dst |
| 2168 | // since we know we're just going to delete tmpPath when we return, |
| 2169 | // so the swap saves that copy. |
| 2170 | dst->swap(tmpPath); |
| 2171 | } else { |
| 2172 | *dst = *srcPtr; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2173 | } |
| 2174 | } |
reed@google.com | fd4be26 | 2012-05-25 01:04:12 +0000 | [diff] [blame] | 2175 | return !rec.isHairlineStyle(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2176 | } |
| 2177 | |
reed@google.com | e4f10a7 | 2012-05-15 20:47:50 +0000 | [diff] [blame] | 2178 | const SkRect& SkPaint::doComputeFastBounds(const SkRect& origSrc, |
reed@google.com | a584aed | 2012-05-16 14:06:02 +0000 | [diff] [blame] | 2179 | SkRect* storage, |
| 2180 | Style style) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2181 | SkASSERT(storage); |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 2182 | |
reed@google.com | e4f10a7 | 2012-05-15 20:47:50 +0000 | [diff] [blame] | 2183 | const SkRect* src = &origSrc; |
| 2184 | |
reed@google.com | 9efd9a0 | 2012-01-30 15:41:43 +0000 | [diff] [blame] | 2185 | if (this->getLooper()) { |
| 2186 | SkASSERT(this->getLooper()->canComputeFastBounds(*this)); |
reed@google.com | e4f10a7 | 2012-05-15 20:47:50 +0000 | [diff] [blame] | 2187 | this->getLooper()->computeFastBounds(*this, *src, storage); |
reed@google.com | 9efd9a0 | 2012-01-30 15:41:43 +0000 | [diff] [blame] | 2188 | return *storage; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2189 | } |
reed@google.com | 9efd9a0 | 2012-01-30 15:41:43 +0000 | [diff] [blame] | 2190 | |
reed@google.com | e4f10a7 | 2012-05-15 20:47:50 +0000 | [diff] [blame] | 2191 | SkRect tmpSrc; |
| 2192 | if (this->getPathEffect()) { |
| 2193 | this->getPathEffect()->computeFastBounds(&tmpSrc, origSrc); |
| 2194 | src = &tmpSrc; |
| 2195 | } |
| 2196 | |
reed@google.com | a584aed | 2012-05-16 14:06:02 +0000 | [diff] [blame] | 2197 | if (kFill_Style != style) { |
reed@google.com | 9efd9a0 | 2012-01-30 15:41:43 +0000 | [diff] [blame] | 2198 | // since we're stroked, outset the rect by the radius (and join type) |
| 2199 | SkScalar radius = SkScalarHalf(this->getStrokeWidth()); |
| 2200 | if (0 == radius) { // hairline |
| 2201 | radius = SK_Scalar1; |
| 2202 | } else if (this->getStrokeJoin() == SkPaint::kMiter_Join) { |
| 2203 | SkScalar scale = this->getStrokeMiter(); |
| 2204 | if (scale > SK_Scalar1) { |
| 2205 | radius = SkScalarMul(radius, scale); |
| 2206 | } |
| 2207 | } |
reed@google.com | e4f10a7 | 2012-05-15 20:47:50 +0000 | [diff] [blame] | 2208 | storage->set(src->fLeft - radius, src->fTop - radius, |
| 2209 | src->fRight + radius, src->fBottom + radius); |
reed@google.com | 9efd9a0 | 2012-01-30 15:41:43 +0000 | [diff] [blame] | 2210 | } else { |
reed@google.com | e4f10a7 | 2012-05-15 20:47:50 +0000 | [diff] [blame] | 2211 | *storage = *src; |
reed@google.com | 9efd9a0 | 2012-01-30 15:41:43 +0000 | [diff] [blame] | 2212 | } |
| 2213 | |
reed@google.com | 9efd9a0 | 2012-01-30 15:41:43 +0000 | [diff] [blame] | 2214 | if (this->getMaskFilter()) { |
| 2215 | this->getMaskFilter()->computeFastBounds(*storage, storage); |
| 2216 | } |
| 2217 | |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 2218 | return *storage; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2219 | } |
| 2220 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 2221 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2222 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 2223 | static bool has_thick_frame(const SkPaint& paint) { |
| 2224 | return paint.getStrokeWidth() > 0 && |
| 2225 | paint.getStyle() != SkPaint::kFill_Style; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2226 | } |
| 2227 | |
| 2228 | SkTextToPathIter::SkTextToPathIter( const char text[], size_t length, |
| 2229 | const SkPaint& paint, |
djsollen@google.com | 166e653 | 2012-03-20 14:24:38 +0000 | [diff] [blame] | 2230 | bool applyStrokeAndPathEffects) |
| 2231 | : fPaint(paint) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2232 | fGlyphCacheProc = paint.getMeasureCacheProc(SkPaint::kForward_TextBufferDirection, |
| 2233 | true); |
| 2234 | |
djsollen@google.com | 166e653 | 2012-03-20 14:24:38 +0000 | [diff] [blame] | 2235 | fPaint.setLinearText(true); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2236 | fPaint.setMaskFilter(NULL); // don't want this affecting our path-cache lookup |
| 2237 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 2238 | if (fPaint.getPathEffect() == NULL && !has_thick_frame(fPaint)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2239 | applyStrokeAndPathEffects = false; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 2240 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2241 | |
djsollen@google.com | 166e653 | 2012-03-20 14:24:38 +0000 | [diff] [blame] | 2242 | // can't use our canonical size if we need to apply patheffects |
| 2243 | if (fPaint.getPathEffect() == NULL) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2244 | fPaint.setTextSize(SkIntToScalar(SkPaint::kCanonicalTextSizeForPaths)); |
| 2245 | fScale = paint.getTextSize() / SkPaint::kCanonicalTextSizeForPaths; |
djsollen@google.com | 166e653 | 2012-03-20 14:24:38 +0000 | [diff] [blame] | 2246 | if (has_thick_frame(fPaint)) { |
| 2247 | fPaint.setStrokeWidth(SkScalarDiv(fPaint.getStrokeWidth(), fScale)); |
| 2248 | } |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 2249 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2250 | fScale = SK_Scalar1; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 2251 | } |
reed@google.com | 72cf492 | 2011-01-04 19:58:20 +0000 | [diff] [blame] | 2252 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 2253 | if (!applyStrokeAndPathEffects) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2254 | fPaint.setStyle(SkPaint::kFill_Style); |
| 2255 | fPaint.setPathEffect(NULL); |
| 2256 | } |
| 2257 | |
| 2258 | fCache = fPaint.detachCache(NULL); |
| 2259 | |
| 2260 | SkPaint::Style style = SkPaint::kFill_Style; |
| 2261 | SkPathEffect* pe = NULL; |
| 2262 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 2263 | if (!applyStrokeAndPathEffects) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2264 | style = paint.getStyle(); // restore |
| 2265 | pe = paint.getPathEffect(); // restore |
| 2266 | } |
| 2267 | fPaint.setStyle(style); |
| 2268 | fPaint.setPathEffect(pe); |
| 2269 | fPaint.setMaskFilter(paint.getMaskFilter()); // restore |
| 2270 | |
| 2271 | // now compute fXOffset if needed |
| 2272 | |
| 2273 | SkScalar xOffset = 0; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 2274 | if (paint.getTextAlign() != SkPaint::kLeft_Align) { // need to measure first |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2275 | int count; |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 2276 | SkScalar width = SkScalarMul(fPaint.measure_text(fCache, text, length, |
| 2277 | &count, NULL), fScale); |
| 2278 | if (paint.getTextAlign() == SkPaint::kCenter_Align) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2279 | width = SkScalarHalf(width); |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 2280 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2281 | xOffset = -width; |
| 2282 | } |
| 2283 | fXPos = xOffset; |
| 2284 | fPrevAdvance = 0; |
| 2285 | |
| 2286 | fText = text; |
| 2287 | fStop = text + length; |
reed@google.com | 7b4531f | 2012-08-07 15:53:00 +0000 | [diff] [blame] | 2288 | |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 2289 | fXYIndex = paint.isVerticalText() ? 1 : 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2290 | } |
| 2291 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 2292 | SkTextToPathIter::~SkTextToPathIter() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2293 | SkGlyphCache::AttachCache(fCache); |
| 2294 | } |
| 2295 | |
reed@google.com | 7b4531f | 2012-08-07 15:53:00 +0000 | [diff] [blame] | 2296 | bool SkTextToPathIter::next(const SkPath** path, SkScalar* xpos) { |
| 2297 | if (fText < fStop) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2298 | const SkGlyph& glyph = fGlyphCacheProc(fCache, &fText); |
| 2299 | |
| 2300 | fXPos += SkScalarMul(SkFixedToScalar(fPrevAdvance + fAutoKern.adjust(glyph)), fScale); |
reed@google.com | 44da42e | 2011-11-10 20:04:47 +0000 | [diff] [blame] | 2301 | fPrevAdvance = advance(glyph, fXYIndex); // + fPaint.getTextTracking(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2302 | |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 2303 | if (glyph.fWidth) { |
reed@google.com | 7b4531f | 2012-08-07 15:53:00 +0000 | [diff] [blame] | 2304 | if (path) { |
| 2305 | *path = fCache->findPath(glyph); |
reed@google.com | 6fb7e2e | 2011-02-08 22:22:52 +0000 | [diff] [blame] | 2306 | } |
reed@google.com | 7b4531f | 2012-08-07 15:53:00 +0000 | [diff] [blame] | 2307 | } else { |
| 2308 | if (path) { |
| 2309 | *path = NULL; |
| 2310 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2311 | } |
reed@google.com | 7b4531f | 2012-08-07 15:53:00 +0000 | [diff] [blame] | 2312 | if (xpos) { |
| 2313 | *xpos = fXPos; |
| 2314 | } |
| 2315 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2316 | } |
reed@google.com | 7b4531f | 2012-08-07 15:53:00 +0000 | [diff] [blame] | 2317 | return false; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2318 | } |
reed@google.com | dcd0f3a | 2011-10-04 01:17:15 +0000 | [diff] [blame] | 2319 | |
| 2320 | /////////////////////////////////////////////////////////////////////////////// |
| 2321 | |
| 2322 | bool SkPaint::nothingToDraw() const { |
reed@google.com | 733e302 | 2011-10-06 15:11:03 +0000 | [diff] [blame] | 2323 | if (fLooper) { |
| 2324 | return false; |
| 2325 | } |
reed@google.com | dcd0f3a | 2011-10-04 01:17:15 +0000 | [diff] [blame] | 2326 | SkXfermode::Mode mode; |
| 2327 | if (SkXfermode::AsMode(fXfermode, &mode)) { |
| 2328 | switch (mode) { |
| 2329 | case SkXfermode::kSrcOver_Mode: |
| 2330 | case SkXfermode::kSrcATop_Mode: |
| 2331 | case SkXfermode::kDstOut_Mode: |
| 2332 | case SkXfermode::kDstOver_Mode: |
| 2333 | case SkXfermode::kPlus_Mode: |
| 2334 | return 0 == this->getAlpha(); |
| 2335 | case SkXfermode::kDst_Mode: |
| 2336 | return true; |
| 2337 | default: |
| 2338 | break; |
| 2339 | } |
| 2340 | } |
| 2341 | return false; |
| 2342 | } |
| 2343 | |
| 2344 | |
reed@google.com | 15356a6 | 2011-11-03 19:29:08 +0000 | [diff] [blame] | 2345 | //////////// Move these to their own file soon. |
| 2346 | |
robertphillips@google.com | 0456e0b | 2012-06-27 14:03:26 +0000 | [diff] [blame] | 2347 | SK_DEFINE_INST_COUNT(SkDrawLooper) |
| 2348 | |
reed@google.com | 9efd9a0 | 2012-01-30 15:41:43 +0000 | [diff] [blame] | 2349 | bool SkDrawLooper::canComputeFastBounds(const SkPaint& paint) { |
| 2350 | SkCanvas canvas; |
| 2351 | |
| 2352 | this->init(&canvas); |
| 2353 | for (;;) { |
| 2354 | SkPaint p(paint); |
| 2355 | if (this->next(&canvas, &p)) { |
| 2356 | p.setLooper(NULL); |
| 2357 | if (!p.canComputeFastBounds()) { |
| 2358 | return false; |
| 2359 | } |
| 2360 | } else { |
| 2361 | break; |
| 2362 | } |
| 2363 | } |
| 2364 | return true; |
| 2365 | } |
| 2366 | |
| 2367 | void SkDrawLooper::computeFastBounds(const SkPaint& paint, const SkRect& src, |
| 2368 | SkRect* dst) { |
| 2369 | SkCanvas canvas; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 2370 | |
reed@google.com | 9efd9a0 | 2012-01-30 15:41:43 +0000 | [diff] [blame] | 2371 | this->init(&canvas); |
| 2372 | for (bool firstTime = true;; firstTime = false) { |
| 2373 | SkPaint p(paint); |
| 2374 | if (this->next(&canvas, &p)) { |
| 2375 | SkRect r(src); |
| 2376 | |
| 2377 | p.setLooper(NULL); |
| 2378 | p.computeFastBounds(r, &r); |
| 2379 | canvas.getTotalMatrix().mapRect(&r); |
| 2380 | |
| 2381 | if (firstTime) { |
| 2382 | *dst = r; |
| 2383 | } else { |
| 2384 | dst->join(r); |
| 2385 | } |
| 2386 | } else { |
| 2387 | break; |
| 2388 | } |
| 2389 | } |
| 2390 | } |
| 2391 | |