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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2010 Google Inc. | 3 * Copyright 2010 Google Inc. |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 | 10 |
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21 class GrFontCache; | 21 class GrFontCache; |
22 class GrGpu; | 22 class GrGpu; |
23 class GrFontPurgeListener; | 23 class GrFontPurgeListener; |
24 | 24 |
25 /** | 25 /** |
26 * The textcache maps a hostfontscaler instance to a dictionary of | 26 * The textcache maps a hostfontscaler instance to a dictionary of |
27 * glyphid->strike | 27 * glyphid->strike |
28 */ | 28 */ |
29 class GrTextStrike { | 29 class GrTextStrike { |
30 public: | 30 public: |
31 GrTextStrike(GrFontCache*, const GrKey* fontScalerKey, GrMaskFormat, GrAtlas
Mgr*); | 31 GrTextStrike(GrFontCache*, const GrKey* fontScalerKey, GrMaskFormat, GrAtlas
*); |
32 ~GrTextStrike(); | 32 ~GrTextStrike(); |
33 | 33 |
34 const GrKey* getFontScalerKey() const { return fFontScalerKey; } | 34 const GrKey* getFontScalerKey() const { return fFontScalerKey; } |
35 GrFontCache* getFontCache() const { return fFontCache; } | 35 GrFontCache* getFontCache() const { return fFontCache; } |
36 GrMaskFormat getMaskFormat() const { return fMaskFormat; } | 36 GrMaskFormat getMaskFormat() const { return fMaskFormat; } |
37 | 37 |
38 inline GrGlyph* getGlyph(GrGlyph::PackedID, GrFontScaler*); | 38 inline GrGlyph* getGlyph(GrGlyph::PackedID, GrFontScaler*); |
39 bool addGlyphToAtlas(GrGlyph*, GrFontScaler*); | 39 bool addGlyphToAtlas(GrGlyph*, GrFontScaler*); |
40 | 40 |
41 // testing | 41 // testing |
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52 GrTextStrike* fPrev; | 52 GrTextStrike* fPrev; |
53 GrTextStrike* fNext; | 53 GrTextStrike* fNext; |
54 | 54 |
55 private: | 55 private: |
56 class Key; | 56 class Key; |
57 GrTHashTable<GrGlyph, Key, 7> fCache; | 57 GrTHashTable<GrGlyph, Key, 7> fCache; |
58 const GrKey* fFontScalerKey; | 58 const GrKey* fFontScalerKey; |
59 GrTAllocPool<GrGlyph> fPool; | 59 GrTAllocPool<GrGlyph> fPool; |
60 | 60 |
61 GrFontCache* fFontCache; | 61 GrFontCache* fFontCache; |
62 GrAtlasMgr* fAtlasMgr; | 62 GrAtlas* fAtlas; |
63 GrMaskFormat fMaskFormat; | 63 GrMaskFormat fMaskFormat; |
64 bool fUseDistanceField; | 64 bool fUseDistanceField; |
65 | 65 |
66 GrAtlas fAtlas; | 66 GrAtlas::ClientPlotUsage fPlotUsage; |
67 | 67 |
68 GrGlyph* generateGlyph(GrGlyph::PackedID packed, GrFontScaler* scaler); | 68 GrGlyph* generateGlyph(GrGlyph::PackedID packed, GrFontScaler* scaler); |
69 | 69 |
70 friend class GrFontCache; | 70 friend class GrFontCache; |
71 }; | 71 }; |
72 | 72 |
73 class GrFontCache { | 73 class GrFontCache { |
74 public: | 74 public: |
75 GrFontCache(GrGpu*); | 75 GrFontCache(GrGpu*); |
76 ~GrFontCache(); | 76 ~GrFontCache(); |
77 | 77 |
78 inline GrTextStrike* getStrike(GrFontScaler*, bool useDistanceField); | 78 inline GrTextStrike* getStrike(GrFontScaler*, bool useDistanceField); |
79 | 79 |
80 void freeAll(); | 80 void freeAll(); |
81 | 81 |
82 // make an unused plot available | 82 // make an unused plot available |
83 bool freeUnusedPlot(GrTextStrike* preserveStrike); | 83 bool freeUnusedPlot(GrTextStrike* preserveStrike); |
84 | 84 |
85 // testing | 85 // testing |
86 int countStrikes() const { return fCache.getArray().count(); } | 86 int countStrikes() const { return fCache.getArray().count(); } |
87 const GrTextStrike* strikeAt(int index) const { | 87 const GrTextStrike* strikeAt(int index) const { |
88 return fCache.getArray()[index]; | 88 return fCache.getArray()[index]; |
89 } | 89 } |
90 GrTextStrike* getHeadStrike() const { return fHead; } | 90 GrTextStrike* getHeadStrike() const { return fHead; } |
91 | 91 |
92 void updateTextures() { | 92 void updateTextures() { |
93 for (int i = 0; i < kAtlasCount; ++i) { | 93 for (int i = 0; i < kAtlasCount; ++i) { |
94 if (fAtlasMgr[i]) { | 94 if (fAtlases[i]) { |
95 fAtlasMgr[i]->uploadPlotsToTexture(); | 95 fAtlases[i]->uploadPlotsToTexture(); |
96 } | 96 } |
97 } | 97 } |
98 } | 98 } |
99 | 99 |
100 #ifdef SK_DEBUG | 100 #ifdef SK_DEBUG |
101 void validate() const; | 101 void validate() const; |
102 #else | 102 #else |
103 void validate() const {} | 103 void validate() const {} |
104 #endif | 104 #endif |
105 | 105 |
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117 private: | 117 private: |
118 friend class GrFontPurgeListener; | 118 friend class GrFontPurgeListener; |
119 | 119 |
120 class Key; | 120 class Key; |
121 GrTHashTable<GrTextStrike, Key, 8> fCache; | 121 GrTHashTable<GrTextStrike, Key, 8> fCache; |
122 // for LRU | 122 // for LRU |
123 GrTextStrike* fHead; | 123 GrTextStrike* fHead; |
124 GrTextStrike* fTail; | 124 GrTextStrike* fTail; |
125 | 125 |
126 GrGpu* fGpu; | 126 GrGpu* fGpu; |
127 GrAtlasMgr* fAtlasMgr[kAtlasCount]; | 127 GrAtlas* fAtlases[kAtlasCount]; |
128 | 128 |
129 GrTextStrike* generateStrike(GrFontScaler*, const Key&); | 129 GrTextStrike* generateStrike(GrFontScaler*, const Key&); |
130 inline void detachStrikeFromList(GrTextStrike*); | 130 inline void detachStrikeFromList(GrTextStrike*); |
131 void purgeStrike(GrTextStrike* strike); | 131 void purgeStrike(GrTextStrike* strike); |
132 }; | 132 }; |
133 | 133 |
134 #endif | 134 #endif |
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