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| 1 /* | 1 /* |
| 2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
| 6 * met: | 6 * met: |
| 7 * | 7 * |
| 8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
| 10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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| 55 void DrawLooperBuilder::addUnmodifiedContent() { | 55 void DrawLooperBuilder::addUnmodifiedContent() { |
| 56 SkLayerDrawLooper::LayerInfo info; | 56 SkLayerDrawLooper::LayerInfo info; |
| 57 m_skDrawLooperBuilder.addLayerOnTop(info); | 57 m_skDrawLooperBuilder.addLayerOnTop(info); |
| 58 } | 58 } |
| 59 | 59 |
| 60 void DrawLooperBuilder::addShadow(const FloatSize& offset, | 60 void DrawLooperBuilder::addShadow(const FloatSize& offset, |
| 61 float blur, | 61 float blur, |
| 62 const Color& color, | 62 const Color& color, |
| 63 ShadowTransformMode shadowTransformMode, | 63 ShadowTransformMode shadowTransformMode, |
| 64 ShadowAlphaMode shadowAlphaMode) { | 64 ShadowAlphaMode shadowAlphaMode) { |
| 65 ASSERT(blur >= 0); | 65 DCHECK_GE(blur, 0); |
| 66 | 66 |
| 67 // Detect when there's no effective shadow. | 67 // Detect when there's no effective shadow. |
| 68 if (!color.alpha()) | 68 if (!color.alpha()) |
| 69 return; | 69 return; |
| 70 | 70 |
| 71 SkColor skColor = color.rgb(); | 71 SkColor skColor = color.rgb(); |
| 72 | 72 |
| 73 SkLayerDrawLooper::LayerInfo info; | 73 SkLayerDrawLooper::LayerInfo info; |
| 74 | 74 |
| 75 switch (shadowAlphaMode) { | 75 switch (shadowAlphaMode) { |
| 76 case ShadowRespectsAlpha: | 76 case ShadowRespectsAlpha: |
| 77 info.fColorMode = SkBlendMode::kDst; | 77 info.fColorMode = SkBlendMode::kDst; |
| 78 break; | 78 break; |
| 79 case ShadowIgnoresAlpha: | 79 case ShadowIgnoresAlpha: |
| 80 info.fColorMode = SkBlendMode::kSrc; | 80 info.fColorMode = SkBlendMode::kSrc; |
| 81 break; | 81 break; |
| 82 default: | 82 default: |
| 83 ASSERT_NOT_REACHED(); | 83 NOTREACHED(); |
| 84 } | 84 } |
| 85 | 85 |
| 86 if (blur) | 86 if (blur) |
| 87 info.fPaintBits |= SkLayerDrawLooper::kMaskFilter_Bit; // our blur | 87 info.fPaintBits |= SkLayerDrawLooper::kMaskFilter_Bit; // our blur |
| 88 info.fPaintBits |= SkLayerDrawLooper::kColorFilter_Bit; | 88 info.fPaintBits |= SkLayerDrawLooper::kColorFilter_Bit; |
| 89 info.fOffset.set(offset.width(), offset.height()); | 89 info.fOffset.set(offset.width(), offset.height()); |
| 90 info.fPostTranslate = (shadowTransformMode == ShadowIgnoresTransforms); | 90 info.fPostTranslate = (shadowTransformMode == ShadowIgnoresTransforms); |
| 91 | 91 |
| 92 SkPaint* paint = m_skDrawLooperBuilder.addLayerOnTop(info); | 92 SkPaint* paint = m_skDrawLooperBuilder.addLayerOnTop(info); |
| 93 | 93 |
| 94 if (blur) { | 94 if (blur) { |
| 95 const SkScalar sigma = skBlurRadiusToSigma(blur); | 95 const SkScalar sigma = skBlurRadiusToSigma(blur); |
| 96 uint32_t mfFlags = SkBlurMaskFilter::kHighQuality_BlurFlag; | 96 uint32_t mfFlags = SkBlurMaskFilter::kHighQuality_BlurFlag; |
| 97 if (shadowTransformMode == ShadowIgnoresTransforms) | 97 if (shadowTransformMode == ShadowIgnoresTransforms) |
| 98 mfFlags |= SkBlurMaskFilter::kIgnoreTransform_BlurFlag; | 98 mfFlags |= SkBlurMaskFilter::kIgnoreTransform_BlurFlag; |
| 99 paint->setMaskFilter( | 99 paint->setMaskFilter( |
| 100 SkBlurMaskFilter::Make(kNormal_SkBlurStyle, sigma, mfFlags)); | 100 SkBlurMaskFilter::Make(kNormal_SkBlurStyle, sigma, mfFlags)); |
| 101 } | 101 } |
| 102 | 102 |
| 103 paint->setColorFilter( | 103 paint->setColorFilter( |
| 104 SkColorFilter::MakeModeFilter(skColor, SkBlendMode::kSrcIn)); | 104 SkColorFilter::MakeModeFilter(skColor, SkBlendMode::kSrcIn)); |
| 105 } | 105 } |
| 106 | 106 |
| 107 } // namespace blink | 107 } // namespace blink |
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