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1 /* | 1 /* |
2 * Copyright 2006 The Android Open Source Project | 2 * Copyright 2006 The Android Open Source Project |
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 SkTransparentShader_DEFINED | 8 #ifndef SkTransparentShader_DEFINED |
9 #define SkTransparentShader_DEFINED | 9 #define SkTransparentShader_DEFINED |
10 | 10 |
11 #include "SkShader.h" | 11 #include "SkShader.h" |
12 | 12 |
13 class SK_API SkTransparentShader : public SkShader { | 13 class SK_API SkTransparentShader : public SkShader { |
14 public: | 14 public: |
15 SkTransparentShader() {} | 15 SkTransparentShader() {} |
16 | 16 |
17 virtual uint32_t getFlags() SK_OVERRIDE; | 17 virtual SkShader::Context* createContext(const SkBitmap& device, const SkPai
nt& paint, |
18 virtual bool setContext(const SkBitmap& device, | 18 const SkMatrix& matrix, void* stora
ge) const |
19 const SkPaint& paint, | 19 SK_OVERRIDE; |
20 const SkMatrix& matrix) SK_OVERRIDE; | 20 virtual size_t contextSize() const SK_OVERRIDE; |
21 virtual void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE; | 21 |
22 virtual void shadeSpan16(int x, int y, uint16_t span[], int count) SK_OVE
RRIDE; | 22 class TransparentShaderContext : public SkShader::Context { |
| 23 public: |
| 24 TransparentShaderContext(const SkTransparentShader& shader, const SkBitm
ap& device, |
| 25 const SkPaint& paint, const SkMatrix& matrix); |
| 26 virtual ~TransparentShaderContext(); |
| 27 |
| 28 virtual uint32_t getFlags() const SK_OVERRIDE; |
| 29 virtual void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE
; |
| 30 virtual void shadeSpan16(int x, int y, uint16_t span[], int count) SK_OV
ERRIDE; |
| 31 |
| 32 private: |
| 33 const SkBitmap* fDevice; |
| 34 |
| 35 typedef SkShader::Context INHERITED; |
| 36 }; |
23 | 37 |
24 SK_TO_STRING_OVERRIDE() | 38 SK_TO_STRING_OVERRIDE() |
25 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTransparentShader) | 39 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTransparentShader) |
26 | 40 |
27 private: | 41 private: |
28 // these are a cache from the call to setContext() | |
29 const SkBitmap* fDevice; | |
30 uint8_t fAlpha; | |
31 | |
32 SkTransparentShader(SkReadBuffer& buffer) : INHERITED(buffer) {} | 42 SkTransparentShader(SkReadBuffer& buffer) : INHERITED(buffer) {} |
33 | 43 |
34 typedef SkShader INHERITED; | 44 typedef SkShader INHERITED; |
35 }; | 45 }; |
36 | 46 |
37 #endif | 47 #endif |
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