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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 "SkFilterShader.h" | 8 #include "SkFilterShader.h" |
9 | 9 |
10 #include "SkColorFilter.h" | 10 #include "SkColorFilter.h" |
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25 fFilter->unref(); | 25 fFilter->unref(); |
26 fShader->unref(); | 26 fShader->unref(); |
27 } | 27 } |
28 | 28 |
29 SkFlattenable* SkFilterShader::CreateProc(SkReadBuffer& buffer) { | 29 SkFlattenable* SkFilterShader::CreateProc(SkReadBuffer& buffer) { |
30 SkAutoTUnref<SkShader> shader(buffer.readShader()); | 30 SkAutoTUnref<SkShader> shader(buffer.readShader()); |
31 SkAutoTUnref<SkColorFilter> filter(buffer.readColorFilter()); | 31 SkAutoTUnref<SkColorFilter> filter(buffer.readColorFilter()); |
32 if (!shader.get() || !filter.get()) { | 32 if (!shader.get() || !filter.get()) { |
33 return NULL; | 33 return NULL; |
34 } | 34 } |
35 return SkNEW_ARGS(SkFilterShader, (shader, filter)); | 35 return new SkFilterShader(shader, filter); |
36 } | 36 } |
37 | 37 |
38 void SkFilterShader::flatten(SkWriteBuffer& buffer) const { | 38 void SkFilterShader::flatten(SkWriteBuffer& buffer) const { |
39 buffer.writeFlattenable(fShader); | 39 buffer.writeFlattenable(fShader); |
40 buffer.writeFlattenable(fFilter); | 40 buffer.writeFlattenable(fFilter); |
41 } | 41 } |
42 | 42 |
43 uint32_t SkFilterShader::FilterShaderContext::getFlags() const { | 43 uint32_t SkFilterShader::FilterShaderContext::getFlags() const { |
44 const SkFilterShader& filterShader = static_cast<const SkFilterShader&>(fSha
der); | 44 const SkFilterShader& filterShader = static_cast<const SkFilterShader&>(fSha
der); |
45 | 45 |
46 uint32_t shaderF = fShaderContext->getFlags(); | 46 uint32_t shaderF = fShaderContext->getFlags(); |
47 uint32_t filterF = filterShader.fFilter->getFlags(); | 47 uint32_t filterF = filterShader.fFilter->getFlags(); |
48 | 48 |
49 // filters don't support 16bit, so clear the matching bit in the shader | 49 // filters don't support 16bit, so clear the matching bit in the shader |
50 shaderF &= ~SkShader::kHasSpan16_Flag; | 50 shaderF &= ~SkShader::kHasSpan16_Flag; |
51 | 51 |
52 // if the filter might change alpha, clear the opaque flag in the shader | 52 // if the filter might change alpha, clear the opaque flag in the shader |
53 if (!(filterF & SkColorFilter::kAlphaUnchanged_Flag)) { | 53 if (!(filterF & SkColorFilter::kAlphaUnchanged_Flag)) { |
54 shaderF &= ~SkShader::kOpaqueAlpha_Flag; | 54 shaderF &= ~SkShader::kOpaqueAlpha_Flag; |
55 } | 55 } |
56 return shaderF; | 56 return shaderF; |
57 } | 57 } |
58 | 58 |
59 SkShader::Context* SkFilterShader::onCreateContext(const ContextRec& rec, void*
storage) const { | 59 SkShader::Context* SkFilterShader::onCreateContext(const ContextRec& rec, void*
storage) const { |
60 char* shaderContextStorage = (char*)storage + sizeof(FilterShaderContext); | 60 char* shaderContextStorage = (char*)storage + sizeof(FilterShaderContext); |
61 SkShader::Context* shaderContext = fShader->createContext(rec, shaderContext
Storage); | 61 SkShader::Context* shaderContext = fShader->createContext(rec, shaderContext
Storage); |
62 if (NULL == shaderContext) { | 62 if (NULL == shaderContext) { |
63 return NULL; | 63 return NULL; |
64 } | 64 } |
65 return SkNEW_PLACEMENT_ARGS(storage, FilterShaderContext, (*this, shaderCont
ext, rec)); | 65 return new (storage) FilterShaderContext(*this, shaderContext, rec); |
66 } | 66 } |
67 | 67 |
68 size_t SkFilterShader::contextSize() const { | 68 size_t SkFilterShader::contextSize() const { |
69 return sizeof(FilterShaderContext) + fShader->contextSize(); | 69 return sizeof(FilterShaderContext) + fShader->contextSize(); |
70 } | 70 } |
71 | 71 |
72 SkFilterShader::FilterShaderContext::FilterShaderContext(const SkFilterShader& f
ilterShader, | 72 SkFilterShader::FilterShaderContext::FilterShaderContext(const SkFilterShader& f
ilterShader, |
73 SkShader::Context* shad
erContext, | 73 SkShader::Context* shad
erContext, |
74 const ContextRec& rec) | 74 const ContextRec& rec) |
75 : INHERITED(filterShader, rec) | 75 : INHERITED(filterShader, rec) |
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93 str->append("Shader: "); | 93 str->append("Shader: "); |
94 fShader->toString(str); | 94 fShader->toString(str); |
95 str->append(" Filter: "); | 95 str->append(" Filter: "); |
96 // TODO: add "fFilter->toString(str);" once SkColorFilter::toString is added | 96 // TODO: add "fFilter->toString(str);" once SkColorFilter::toString is added |
97 | 97 |
98 this->INHERITED::toString(str); | 98 this->INHERITED::toString(str); |
99 | 99 |
100 str->append(")"); | 100 str->append(")"); |
101 } | 101 } |
102 #endif | 102 #endif |
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