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1 /* | 1 /* |
2 * Copyright 2010 Google Inc. | 2 * Copyright 2010 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 GrTextContext_DEFINED | 8 #ifndef GrTextContext_DEFINED |
9 #define GrTextContext_DEFINED | 9 #define GrTextContext_DEFINED |
10 | 10 |
11 #include "GrGlyph.h" | 11 #include "GrGlyph.h" |
12 #include "GrPaint.h" | 12 #include "GrPaint.h" |
13 #include "SkDeviceProperties.h" | 13 #include "SkDeviceProperties.h" |
14 | 14 |
15 #include "SkPostConfig.h" | 15 #include "SkPostConfig.h" |
16 | 16 |
17 class GrContext; | 17 class GrContext; |
18 class GrDrawTarget; | 18 class GrDrawTarget; |
19 class GrFontScaler; | 19 class GrFontScaler; |
20 | 20 |
21 /* | 21 /* |
22 * This class wraps the state for a single text render | 22 * This class wraps the state for a single text render |
23 */ | 23 */ |
24 class GrTextContext { | 24 class GrTextContext { |
25 public: | 25 public: |
26 virtual ~GrTextContext() {} | 26 virtual ~GrTextContext() {} |
| 27 |
| 28 virtual bool canDraw(const SkPaint& paint) = 0; |
| 29 |
27 virtual void drawText(const GrPaint&, const SkPaint&, const char text[], siz
e_t byteLength, | 30 virtual void drawText(const GrPaint&, const SkPaint&, const char text[], siz
e_t byteLength, |
28 SkScalar x, SkScalar y) = 0; | 31 SkScalar x, SkScalar y) = 0; |
29 virtual void drawPosText(const GrPaint&, const SkPaint&, | 32 virtual void drawPosText(const GrPaint&, const SkPaint&, |
30 const char text[], size_t byteLength, | 33 const char text[], size_t byteLength, |
31 const SkScalar pos[], int scalarsPerPosition, | 34 const SkScalar pos[], int scalarsPerPosition, |
32 const SkPoint& offset) = 0; | 35 const SkPoint& offset) = 0; |
33 | 36 |
34 virtual bool canDraw(const SkPaint& paint) = 0; | |
35 | |
36 protected: | 37 protected: |
37 GrTextContext(GrContext*, const SkDeviceProperties&); | |
38 | |
39 static GrFontScaler* GetGrFontScaler(SkGlyphCache* cache); | |
40 static void MeasureText(SkGlyphCache* cache, SkDrawCacheProc glyphCacheProc, | |
41 const char text[], size_t byteLength, SkVector* stop
Vector); | |
42 | |
43 void init(const GrPaint&, const SkPaint&); | |
44 void finish() { fDrawTarget = NULL; } | |
45 | |
46 GrContext* fContext; | 38 GrContext* fContext; |
47 SkDeviceProperties fDeviceProperties; | 39 SkDeviceProperties fDeviceProperties; |
48 | 40 |
49 GrDrawTarget* fDrawTarget; | 41 GrDrawTarget* fDrawTarget; |
50 SkIRect fClipRect; | 42 SkIRect fClipRect; |
51 GrPaint fPaint; | 43 GrPaint fPaint; |
52 SkPaint fSkPaint; | 44 SkPaint fSkPaint; |
| 45 |
| 46 GrTextContext(GrContext*, const SkDeviceProperties&); |
| 47 |
| 48 void init(const GrPaint&, const SkPaint&); |
| 49 void finish() { fDrawTarget = NULL; } |
| 50 |
| 51 static GrFontScaler* GetGrFontScaler(SkGlyphCache* cache); |
| 52 static void MeasureText(SkGlyphCache* cache, SkDrawCacheProc glyphCacheProc, |
| 53 const char text[], size_t byteLength, SkVector* stop
Vector); |
53 }; | 54 }; |
54 | 55 |
55 #endif | 56 #endif |
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