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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 #ifndef GrBitmapTextContext_DEFINED | 8 #ifndef GrBitmapTextContext_DEFINED |
9 #define GrBitmapTextContext_DEFINED | 9 #define GrBitmapTextContext_DEFINED |
10 | 10 |
11 #include "GrTextContext.h" | 11 #include "GrTextContext.h" |
12 | 12 |
13 class GrGeometryProcessor; | 13 class GrGeometryProcessor; |
14 class GrTextStrike; | 14 class GrTextStrike; |
15 | 15 |
16 /* | 16 /* |
17 * This class implements GrTextContext using standard bitmap fonts | 17 * This class implements GrTextContext using standard bitmap fonts |
18 */ | 18 */ |
19 class GrBitmapTextContext : public GrTextContext { | 19 class GrBitmapTextContext : public GrTextContext { |
20 public: | 20 public: |
21 GrBitmapTextContext(GrContext*, const SkDeviceProperties&); | 21 static GrBitmapTextContext* Create(GrContext*, const SkDeviceProperties&); |
| 22 |
22 virtual ~GrBitmapTextContext(); | 23 virtual ~GrBitmapTextContext(); |
23 | 24 |
24 virtual bool canDraw(const SkPaint& paint) SK_OVERRIDE; | |
25 | |
26 virtual void drawText(const GrPaint&, const SkPaint&, const char text[], siz
e_t byteLength, | |
27 SkScalar x, SkScalar y) SK_OVERRIDE; | |
28 virtual void drawPosText(const GrPaint&, const SkPaint&, | |
29 const char text[], size_t byteLength, | |
30 const SkScalar pos[], int scalarsPerPosition, | |
31 const SkPoint& offset) SK_OVERRIDE; | |
32 | |
33 private: | 25 private: |
34 enum { | 26 enum { |
35 kMinRequestedGlyphs = 1, | 27 kMinRequestedGlyphs = 1, |
36 kDefaultRequestedGlyphs = 64, | 28 kDefaultRequestedGlyphs = 64, |
37 kMinRequestedVerts = kMinRequestedGlyphs * 4, | 29 kMinRequestedVerts = kMinRequestedGlyphs * 4, |
38 kDefaultRequestedVerts = kDefaultRequestedGlyphs * 4, | 30 kDefaultRequestedVerts = kDefaultRequestedGlyphs * 4, |
39 }; | 31 }; |
40 | 32 |
41 GrTextStrike* fStrike; | 33 GrTextStrike* fStrike; |
42 void* fVertices; | 34 void* fVertices; |
43 int fCurrVertex; | 35 int fCurrVertex; |
44 int fMaxVertices; | 36 int fMaxVertices; |
45 SkRect fVertexBounds; | 37 SkRect fVertexBounds; |
46 GrTexture* fCurrTexture; | 38 GrTexture* fCurrTexture; |
47 GrMaskFormat fCurrMaskFormat; | 39 GrMaskFormat fCurrMaskFormat; |
48 SkAutoTUnref<GrGeometryProcessor> fCachedGeometryProcessor; | 40 SkAutoTUnref<GrGeometryProcessor> fCachedGeometryProcessor; |
49 // Used to check whether fCachedEffect is still valid. | 41 // Used to check whether fCachedEffect is still valid. |
50 uint32_t fEffectTextureUniqueID; | 42 uint32_t fEffectTextureUniqueID; |
51 | 43 |
| 44 GrBitmapTextContext(GrContext*, const SkDeviceProperties&); |
| 45 |
| 46 virtual bool canDraw(const SkPaint& paint) SK_OVERRIDE; |
| 47 |
| 48 virtual void onDrawText(const GrPaint&, const SkPaint&, const char text[], s
ize_t byteLength, |
| 49 SkScalar x, SkScalar y) SK_OVERRIDE; |
| 50 virtual void onDrawPosText(const GrPaint&, const SkPaint&, |
| 51 const char text[], size_t byteLength, |
| 52 const SkScalar pos[], int scalarsPerPosition, |
| 53 const SkPoint& offset) SK_OVERRIDE; |
| 54 |
52 void init(const GrPaint&, const SkPaint&); | 55 void init(const GrPaint&, const SkPaint&); |
53 void appendGlyph(GrGlyph::PackedID, SkFixed left, SkFixed top, GrFontScaler*
); | 56 void appendGlyph(GrGlyph::PackedID, SkFixed left, SkFixed top, GrFontScaler*
); |
54 void flush(); // automatically called by destructor | 57 void flush(); // automatically called by destructor |
55 void finish(); | 58 void finish(); |
56 | 59 |
57 }; | 60 }; |
58 | 61 |
59 #endif | 62 #endif |
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