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| 1 /* | 1 /* |
| 2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 #include "SkDescriptor.h" | |
| 9 #include "SkGScalerContext.h" | 8 #include "SkGScalerContext.h" |
| 10 #include "SkGlyph.h" | 9 #include "SkGlyph.h" |
| 11 #include "SkPath.h" | 10 #include "SkPath.h" |
| 12 #include "SkCanvas.h" | 11 #include "SkCanvas.h" |
| 13 | 12 |
| 14 #define STD_SIZE 1 | |
| 15 | |
| 16 class SkGScalerContext : public SkScalerContext { | 13 class SkGScalerContext : public SkScalerContext { |
| 17 public: | 14 public: |
| 18 SkGScalerContext(SkGTypeface* face, const SkScalerContextEffects& effects, | 15 SkGScalerContext(SkGTypeface*, const SkDescriptor*); |
| 19 const SkDescriptor* desc) | 16 virtual ~SkGScalerContext(); |
| 20 : SkScalerContext(face, effects, desc) | |
| 21 , fFace(face) | |
| 22 { | |
| 23 | |
| 24 size_t descSize = SkDescriptor::ComputeOverhead(1) + sizeof(SkScalerCon
text::Rec); | |
| 25 SkAutoDescriptor ad(descSize); | |
| 26 SkDescriptor* newDesc = ad.getDesc(); | |
| 27 | |
| 28 newDesc->init(); | |
| 29 void* entry = newDesc->addEntry(kRec_SkDescriptorTag, | |
| 30 sizeof(SkScalerContext::Rec), &fRec); | |
| 31 { | |
| 32 SkScalerContext::Rec* rec = (SkScalerContext::Rec*)entry; | |
| 33 rec->fTextSize = STD_SIZE; | |
| 34 rec->fPreScaleX = SK_Scalar1; | |
| 35 rec->fPreSkewX = 0; | |
| 36 rec->fPost2x2[0][0] = rec->fPost2x2[1][1] = SK_Scalar1; | |
| 37 rec->fPost2x2[1][0] = rec->fPost2x2[0][1] = 0; | |
| 38 } | |
| 39 SkASSERT(descSize == newDesc->getLength()); | |
| 40 newDesc->computeChecksum(); | |
| 41 | |
| 42 fProxy = face->proxy()->createScalerContext(effects, newDesc); | |
| 43 | |
| 44 fRec.getSingleMatrix(&fMatrix); | |
| 45 fMatrix.preScale(SK_Scalar1 / STD_SIZE, SK_Scalar1 / STD_SIZE); | |
| 46 } | |
| 47 virtual ~SkGScalerContext() { delete fProxy; } | |
| 48 | 17 |
| 49 protected: | 18 protected: |
| 50 unsigned generateGlyphCount() override; | 19 unsigned generateGlyphCount() override; |
| 51 uint16_t generateCharToGlyph(SkUnichar) override; | 20 uint16_t generateCharToGlyph(SkUnichar) override; |
| 52 void generateAdvance(SkGlyph*) override; | 21 void generateAdvance(SkGlyph*) override; |
| 53 void generateMetrics(SkGlyph*) override; | 22 void generateMetrics(SkGlyph*) override; |
| 54 void generateImage(const SkGlyph&) override; | 23 void generateImage(const SkGlyph&) override; |
| 55 void generatePath(const SkGlyph&, SkPath*) override; | 24 void generatePath(const SkGlyph&, SkPath*) override; |
| 56 void generateFontMetrics(SkPaint::FontMetrics*) override; | 25 void generateFontMetrics(SkPaint::FontMetrics*) override; |
| 57 | 26 |
| 58 private: | 27 private: |
| 59 SkGTypeface* fFace; | 28 SkGTypeface* fFace; |
| 60 SkScalerContext* fProxy; | 29 SkScalerContext* fProxy; |
| 61 SkMatrix fMatrix; | 30 SkMatrix fMatrix; |
| 62 }; | 31 }; |
| 63 | 32 |
| 33 #define STD_SIZE 1 |
| 34 |
| 35 #include "SkDescriptor.h" |
| 36 |
| 37 SkGScalerContext::SkGScalerContext(SkGTypeface* face, const SkDescriptor* desc) |
| 38 : SkScalerContext(face, desc) |
| 39 , fFace(face) |
| 40 { |
| 41 |
| 42 size_t descSize = SkDescriptor::ComputeOverhead(1) + sizeof(SkScalerContext
::Rec); |
| 43 SkAutoDescriptor ad(descSize); |
| 44 SkDescriptor* newDesc = ad.getDesc(); |
| 45 |
| 46 newDesc->init(); |
| 47 void* entry = newDesc->addEntry(kRec_SkDescriptorTag, |
| 48 sizeof(SkScalerContext::Rec), &fRec); |
| 49 { |
| 50 SkScalerContext::Rec* rec = (SkScalerContext::Rec*)entry; |
| 51 rec->fTextSize = STD_SIZE; |
| 52 rec->fPreScaleX = SK_Scalar1; |
| 53 rec->fPreSkewX = 0; |
| 54 rec->fPost2x2[0][0] = rec->fPost2x2[1][1] = SK_Scalar1; |
| 55 rec->fPost2x2[1][0] = rec->fPost2x2[0][1] = 0; |
| 56 } |
| 57 SkASSERT(descSize == newDesc->getLength()); |
| 58 newDesc->computeChecksum(); |
| 59 |
| 60 fProxy = face->proxy()->createScalerContext(newDesc); |
| 61 |
| 62 fRec.getSingleMatrix(&fMatrix); |
| 63 fMatrix.preScale(SK_Scalar1 / STD_SIZE, SK_Scalar1 / STD_SIZE); |
| 64 } |
| 65 |
| 66 SkGScalerContext::~SkGScalerContext() { delete fProxy; } |
| 67 |
| 64 unsigned SkGScalerContext::generateGlyphCount() { | 68 unsigned SkGScalerContext::generateGlyphCount() { |
| 65 return fProxy->getGlyphCount(); | 69 return fProxy->getGlyphCount(); |
| 66 } | 70 } |
| 67 | 71 |
| 68 uint16_t SkGScalerContext::generateCharToGlyph(SkUnichar uni) { | 72 uint16_t SkGScalerContext::generateCharToGlyph(SkUnichar uni) { |
| 69 return fProxy->charToGlyphID(uni); | 73 return fProxy->charToGlyphID(uni); |
| 70 } | 74 } |
| 71 | 75 |
| 72 void SkGScalerContext::generateAdvance(SkGlyph* glyph) { | 76 void SkGScalerContext::generateAdvance(SkGlyph* glyph) { |
| 73 fProxy->getAdvance(glyph); | 77 fProxy->getAdvance(glyph); |
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| 153 | 157 |
| 154 SkGTypeface::SkGTypeface(SkTypeface* proxy, const SkPaint& paint) | 158 SkGTypeface::SkGTypeface(SkTypeface* proxy, const SkPaint& paint) |
| 155 : SkTypeface(proxy->fontStyle(), SkTypefaceCache::NewFontID(), false) | 159 : SkTypeface(proxy->fontStyle(), SkTypefaceCache::NewFontID(), false) |
| 156 , fProxy(SkRef(proxy)) | 160 , fProxy(SkRef(proxy)) |
| 157 , fPaint(paint) {} | 161 , fPaint(paint) {} |
| 158 | 162 |
| 159 SkGTypeface::~SkGTypeface() { | 163 SkGTypeface::~SkGTypeface() { |
| 160 fProxy->unref(); | 164 fProxy->unref(); |
| 161 } | 165 } |
| 162 | 166 |
| 163 SkScalerContext* SkGTypeface::onCreateScalerContext(const SkScalerContextEffects
& effects, | 167 SkScalerContext* SkGTypeface::onCreateScalerContext( |
| 164 const SkDescriptor* desc) co
nst { | 168 const SkDescriptor* desc) const { |
| 165 return new SkGScalerContext(const_cast<SkGTypeface*>(this), effects, desc); | 169 return new SkGScalerContext(const_cast<SkGTypeface*>(this), desc); |
| 166 } | 170 } |
| 167 | 171 |
| 168 void SkGTypeface::onFilterRec(SkScalerContextRec* rec) const { | 172 void SkGTypeface::onFilterRec(SkScalerContextRec* rec) const { |
| 169 fProxy->filterRec(rec); | 173 fProxy->filterRec(rec); |
| 170 rec->setHinting(SkPaint::kNo_Hinting); | 174 rec->setHinting(SkPaint::kNo_Hinting); |
| 171 rec->fMaskFormat = SkMask::kARGB32_Format; | 175 rec->fMaskFormat = SkMask::kARGB32_Format; |
| 172 } | 176 } |
| 173 | 177 |
| 174 SkAdvancedTypefaceMetrics* SkGTypeface::onGetAdvancedTypefaceMetrics( | 178 SkAdvancedTypefaceMetrics* SkGTypeface::onGetAdvancedTypefaceMetrics( |
| 175 PerGlyphInfo info, | 179 PerGlyphInfo info, |
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| 251 | 255 |
| 252 friend class SkGFontBuilder; | 256 friend class SkGFontBuilder; |
| 253 SkGFont(int count, Glyph* array); | 257 SkGFont(int count, Glyph* array); |
| 254 }; | 258 }; |
| 255 | 259 |
| 256 class SkGFontBuilder { | 260 class SkGFontBuilder { |
| 257 public: | 261 public: |
| 258 | 262 |
| 259 }; | 263 }; |
| 260 #endif | 264 #endif |
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