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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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