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| 1 /* libs/graphics/effects/SkBlurMaskFilter.cpp | |
| 2 ** | |
| 3 ** Copyright 2006, The Android Open Source Project | |
| 4 ** | |
| 5 ** Licensed under the Apache License, Version 2.0 (the "License"); | |
| 6 ** you may not use this file except in compliance with the License. | |
| 7 ** You may obtain a copy of the License at | |
| 8 ** | |
| 9 ** http://www.apache.org/licenses/LICENSE-2.0 | |
| 10 ** | |
| 11 ** Unless required by applicable law or agreed to in writing, software | |
| 12 ** distributed under the License is distributed on an "AS IS" BASIS, | |
| 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 14 ** See the License for the specific language governing permissions and | |
| 15 ** limitations under the License. | |
| 16 */ | |
| 17 | |
| 18 #include "SkBlurMaskFilter.h" | |
| 19 #include "SkBlurMask.h" | |
| 20 #include "SkBuffer.h" | |
| 21 #include "SkMaskFilter.h" | |
| 22 | |
| 23 class SkBlurMaskFilterImpl : public SkMaskFilter { | |
| 24 public: | |
| 25 SkBlurMaskFilterImpl(SkScalar radius, SkBlurMaskFilter::BlurStyle style); | |
| 26 | |
| 27 // overrides from SkMaskFilter | |
| 28 virtual SkMask::Format getFormat(); | |
| 29 virtual bool filterMask(SkMask* dst, const SkMask& src, const SkMatrix& matr
ix, SkIPoint* margin); | |
| 30 | |
| 31 // overrides from SkFlattenable | |
| 32 // This method is not exported to java. | |
| 33 virtual Factory getFactory(); | |
| 34 // This method is not exported to java. | |
| 35 virtual void flatten(SkFlattenableWriteBuffer&); | |
| 36 | |
| 37 static SkFlattenable* CreateProc(SkFlattenableReadBuffer&); | |
| 38 | |
| 39 private: | |
| 40 SkScalar fRadius; | |
| 41 SkBlurMaskFilter::BlurStyle fBlurStyle; | |
| 42 | |
| 43 SkBlurMaskFilterImpl(SkFlattenableReadBuffer&); | |
| 44 | |
| 45 typedef SkMaskFilter INHERITED; | |
| 46 }; | |
| 47 | |
| 48 SkMaskFilter* SkBlurMaskFilter::Create(SkScalar radius, SkBlurMaskFilter::BlurSt
yle style) | |
| 49 { | |
| 50 if (radius <= 0 || (unsigned)style >= SkBlurMaskFilter::kBlurStyleCount) | |
| 51 return NULL; | |
| 52 | |
| 53 return SkNEW_ARGS(SkBlurMaskFilterImpl, (radius, style)); | |
| 54 } | |
| 55 | |
| 56 ////////////////////////////////////////////////////////////////////////////////
///////////////////////// | |
| 57 | |
| 58 SkBlurMaskFilterImpl::SkBlurMaskFilterImpl(SkScalar radius, SkBlurMaskFilter::Bl
urStyle style) | |
| 59 : fRadius(radius), fBlurStyle(style) | |
| 60 { | |
| 61 #if 0 | |
| 62 fGamma = NULL; | |
| 63 if (gammaScale) | |
| 64 { | |
| 65 fGamma = new U8[256]; | |
| 66 if (gammaScale > 0) | |
| 67 SkBlurMask::BuildSqrGamma(fGamma, gammaScale); | |
| 68 else | |
| 69 SkBlurMask::BuildSqrtGamma(fGamma, -gammaScale); | |
| 70 } | |
| 71 #endif | |
| 72 SkASSERT(radius >= 0); | |
| 73 SkASSERT((unsigned)style < SkBlurMaskFilter::kBlurStyleCount); | |
| 74 } | |
| 75 | |
| 76 SkMask::Format SkBlurMaskFilterImpl::getFormat() | |
| 77 { | |
| 78 return SkMask::kA8_Format; | |
| 79 } | |
| 80 | |
| 81 bool SkBlurMaskFilterImpl::filterMask(SkMask* dst, const SkMask& src, const SkMa
trix& matrix, SkIPoint* margin) | |
| 82 { | |
| 83 SkScalar radius = matrix.mapRadius(fRadius); | |
| 84 | |
| 85 if (SkBlurMask::Blur(dst, src, radius, (SkBlurMask::Style)fBlurStyle)) | |
| 86 { | |
| 87 if (margin) | |
| 88 margin->set(SkScalarCeil(radius), SkScalarCeil(radius)); | |
| 89 return true; | |
| 90 } | |
| 91 return false; | |
| 92 } | |
| 93 | |
| 94 SkFlattenable* SkBlurMaskFilterImpl::CreateProc(SkFlattenableReadBuffer& buffer) | |
| 95 { | |
| 96 return SkNEW_ARGS(SkBlurMaskFilterImpl, (buffer)); | |
| 97 } | |
| 98 | |
| 99 SkFlattenable::Factory SkBlurMaskFilterImpl::getFactory() | |
| 100 { | |
| 101 return CreateProc; | |
| 102 } | |
| 103 | |
| 104 SkBlurMaskFilterImpl::SkBlurMaskFilterImpl(SkFlattenableReadBuffer& buffer) : Sk
MaskFilter(buffer) | |
| 105 { | |
| 106 fRadius = buffer.readScalar(); | |
| 107 fBlurStyle = (SkBlurMaskFilter::BlurStyle)buffer.readS32(); | |
| 108 SkASSERT(fRadius >= 0); | |
| 109 SkASSERT((unsigned)fBlurStyle < SkBlurMaskFilter::kBlurStyleCount); | |
| 110 } | |
| 111 | |
| 112 void SkBlurMaskFilterImpl::flatten(SkFlattenableWriteBuffer& buffer) | |
| 113 { | |
| 114 this->INHERITED::flatten(buffer); | |
| 115 buffer.writeScalar(fRadius); | |
| 116 buffer.write32(fBlurStyle); | |
| 117 } | |
| 118 | |
| 119 /////////////////////////////////////////////////////////////////////////////// | |
| 120 | |
| 121 static SkFlattenable::Registrar gReg("SkBlurMaskFilter", | |
| 122 SkBlurMaskFilterImpl::CreateProc); | |
| 123 | |
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Chromium Code Reviews
Issue 113827:
Remove the remainder of the skia source code from the Chromium repo.... (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/