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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 sk_draw_looper_builder_.addLayerOnTop(info); | 57 sk_draw_looper_builder_.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 shadow_transform_mode, | 63 ShadowTransformMode shadow_transform_mode, |
64 ShadowAlphaMode shadow_alpha_mode) { | 64 ShadowAlphaMode shadow_alpha_mode) { |
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 sk_color = color.Rgb(); | 71 SkColor sk_color = color.Rgb(); |
72 | 72 |
73 SkLayerDrawLooper::LayerInfo info; | 73 SkLayerDrawLooper::LayerInfo info; |
74 | 74 |
75 switch (shadow_alpha_mode) { | 75 switch (shadow_alpha_mode) { |
76 case kShadowRespectsAlpha: | 76 case kShadowRespectsAlpha: |
77 info.fColorMode = SkBlendMode::kDst; | 77 info.fColorMode = SkBlendMode::kDst; |
78 break; | 78 break; |
79 case kShadowIgnoresAlpha: | 79 case kShadowIgnoresAlpha: |
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 = (shadow_transform_mode == kShadowIgnoresTransforms); | 90 info.fPostTranslate = (shadow_transform_mode == kShadowIgnoresTransforms); |
91 | 91 |
92 SkPaint* paint = sk_draw_looper_builder_.addLayerOnTop(info); | 92 SkPaint* paint = sk_draw_looper_builder_.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 mf_flags = SkBlurMaskFilter::kHighQuality_BlurFlag; | 96 uint32_t mf_flags = SkBlurMaskFilter::kHighQuality_BlurFlag; |
97 if (shadow_transform_mode == kShadowIgnoresTransforms) | 97 if (shadow_transform_mode == kShadowIgnoresTransforms) |
98 mf_flags |= SkBlurMaskFilter::kIgnoreTransform_BlurFlag; | 98 mf_flags |= SkBlurMaskFilter::kIgnoreTransform_BlurFlag; |
99 paint->setMaskFilter( | 99 paint->setMaskFilter( |
100 SkBlurMaskFilter::Make(kNormal_SkBlurStyle, sigma, mf_flags)); | 100 SkBlurMaskFilter::Make(kNormal_SkBlurStyle, sigma, mf_flags)); |
101 } | 101 } |
102 | 102 |
103 paint->setColorFilter( | 103 paint->setColorFilter( |
104 SkColorFilter::MakeModeFilter(sk_color, SkBlendMode::kSrcIn)); | 104 SkColorFilter::MakeModeFilter(sk_color, SkBlendMode::kSrcIn)); |
105 } | 105 } |
106 | 106 |
107 } // namespace blink | 107 } // namespace blink |
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