OLD | NEW |
---|---|
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 |
(...skipping 15 matching lines...) Expand all Loading... | |
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 */ | 29 */ |
30 | 30 |
31 #include "config.h" | 31 #include "config.h" |
32 #include "core/platform/graphics/DrawLooper.h" | 32 #include "core/platform/graphics/DrawLooper.h" |
33 | 33 |
34 #include "core/platform/graphics/Color.h" | 34 #include "core/platform/graphics/Color.h" |
35 #include "core/platform/graphics/FloatSize.h" | 35 #include "core/platform/graphics/FloatSize.h" |
36 #include "third_party/skia/include/core/SkBitmap.h" | |
36 #include "third_party/skia/include/core/SkColor.h" | 37 #include "third_party/skia/include/core/SkColor.h" |
37 #include "third_party/skia/include/core/SkColorFilter.h" | 38 #include "third_party/skia/include/core/SkColorFilter.h" |
38 #include "third_party/skia/include/core/SkDrawLooper.h" | 39 #include "third_party/skia/include/core/SkDrawLooper.h" |
39 #include "third_party/skia/include/core/SkPaint.h" | 40 #include "third_party/skia/include/core/SkPaint.h" |
40 #include "third_party/skia/include/core/SkXfermode.h" | 41 #include "third_party/skia/include/core/SkXfermode.h" |
41 #include "third_party/skia/include/effects/SkBlurMaskFilter.h" | 42 #include "third_party/skia/include/effects/SkBlurMaskFilter.h" |
43 #include "third_party/skia/include/effects/SkDropShadowImageFilter.h" | |
42 #include "third_party/skia/include/effects/SkLayerDrawLooper.h" | 44 #include "third_party/skia/include/effects/SkLayerDrawLooper.h" |
43 | 45 |
44 namespace WebCore { | 46 namespace WebCore { |
45 | 47 |
46 DrawLooper::DrawLooper() : m_skDrawLooper(adoptRef(new SkLayerDrawLooper)) { } | 48 DrawLooper::DrawLooper() |
49 { | |
50 m_cachedDrawLooper.reset(0); | |
51 } | |
47 | 52 |
48 DrawLooper::~DrawLooper() { } | 53 DrawLooper::~DrawLooper() { } |
49 | 54 |
50 SkDrawLooper* DrawLooper::skDrawLooper() const | 55 SkDrawLooper* DrawLooper::skDrawLooper() |
51 { | 56 { |
52 return m_skDrawLooper.get(); | 57 if (!m_cachedDrawLooper.get()) |
58 buildCachedDrawLooper(); | |
59 return m_cachedDrawLooper.get(); | |
60 } | |
61 | |
62 SkImageFilter* DrawLooper::imageFilter() | |
63 { | |
64 if (!m_cachedImageFilter.get()) | |
65 buildCachedImageFilter(); | |
66 return m_cachedImageFilter.get(); | |
67 } | |
68 | |
69 void DrawLooper::clearCached() | |
70 { | |
71 m_cachedDrawLooper.reset(0); | |
72 m_cachedImageFilter.reset(0); | |
53 } | 73 } |
54 | 74 |
55 void DrawLooper::addUnmodifiedContent() | 75 void DrawLooper::addUnmodifiedContent() |
56 { | 76 { |
57 SkLayerDrawLooper::LayerInfo info; | 77 DrawLooperLayerInfo info; |
58 m_skDrawLooper->addLayerOnTop(info); | 78 info.m_layerType = UnmodifiedLayer; |
79 m_layerInfo.append(info); | |
80 clearCached(); | |
59 } | 81 } |
60 | 82 |
83 | |
jbroman
2013/08/23 19:59:38
Extra newline?
| |
61 void DrawLooper::addShadow(const FloatSize& offset, float blur, const Color& col or, | 84 void DrawLooper::addShadow(const FloatSize& offset, float blur, const Color& col or, |
62 ShadowTransformMode shadowTransformMode, ShadowAlphaMode shadowAlphaMode) | 85 ShadowTransformMode shadowTransformMode, ShadowAlphaMode shadowAlphaMode) |
63 { | 86 { |
64 // Detect when there's no effective shadow. | 87 // Detect when there's no effective shadow. |
65 if (!color.alpha()) | 88 if (!color.alpha()) |
66 return; | 89 return; |
90 DrawLooperLayerInfo info; | |
91 info.m_layerType = ShadowLayer; | |
92 info.m_blur = blur; | |
93 info.m_color = color; | |
94 info.m_offset = offset; | |
95 info.m_shadowAlphaMode = shadowAlphaMode; | |
96 info.m_shadowTransformMode = shadowTransformMode; | |
97 m_layerInfo.append(info); | |
98 clearCached(); | |
99 }; | |
67 | 100 |
68 SkColor skColor = color.rgb(); | 101 void DrawLooper::buildCachedDrawLooper() |
102 { | |
103 m_cachedDrawLooper.reset(new SkLayerDrawLooper); | |
104 LayerVector::const_iterator info; | |
105 for (info = m_layerInfo.begin(); info < m_layerInfo.end(); ++info) { | |
106 if (info->m_layerType == ShadowLayer) { | |
107 SkColor skColor = info->m_color.rgb(); | |
69 | 108 |
70 SkLayerDrawLooper::LayerInfo info; | 109 SkLayerDrawLooper::LayerInfo skInfo; |
71 | 110 |
72 switch (shadowAlphaMode) { | 111 switch (info->m_shadowAlphaMode) { |
73 case ShadowRespectsAlpha: | 112 case ShadowRespectsAlpha: |
74 info.fColorMode = SkXfermode::kDst_Mode; | 113 skInfo.fColorMode = SkXfermode::kDst_Mode; |
75 break; | 114 break; |
76 case ShadowIgnoresAlpha: | 115 case ShadowIgnoresAlpha: |
77 info.fColorMode = SkXfermode::kSrc_Mode; | 116 skInfo.fColorMode = SkXfermode::kSrc_Mode; |
78 break; | 117 break; |
79 default: | 118 default: |
80 ASSERT_NOT_REACHED(); | 119 ASSERT_NOT_REACHED(); |
120 } | |
121 | |
122 if (info->m_blur) | |
123 skInfo.fPaintBits |= SkLayerDrawLooper::kMaskFilter_Bit; // our blur | |
124 skInfo.fPaintBits |= SkLayerDrawLooper::kColorFilter_Bit; | |
125 skInfo.fOffset.set(info->m_offset.width(), info->m_offset.height()); | |
126 skInfo.fPostTranslate = (info->m_shadowTransformMode == ShadowIgnore sTransforms); | |
127 | |
128 SkPaint* paint = m_cachedDrawLooper->addLayerOnTop(skInfo); | |
129 | |
130 if (info->m_blur) { | |
131 uint32_t mfFlags = SkBlurMaskFilter::kHighQuality_BlurFlag; | |
132 if (info->m_shadowTransformMode == ShadowIgnoresTransforms) | |
133 mfFlags |= SkBlurMaskFilter::kIgnoreTransform_BlurFlag; | |
134 RefPtr<SkMaskFilter> mf = adoptRef(SkBlurMaskFilter::Create( | |
135 (double)info->m_blur / 2.0, SkBlurMaskFilter::kNormal_BlurSt yle, mfFlags)); | |
136 paint->setMaskFilter(mf.get()); | |
137 } | |
138 | |
139 RefPtr<SkColorFilter> cf = adoptRef(SkColorFilter::CreateModeFilter( skColor, SkXfermode::kSrcIn_Mode)); | |
140 paint->setColorFilter(cf.get()); | |
141 } else { | |
142 // Unmodified layer | |
143 SkLayerDrawLooper::LayerInfo skInfo; | |
144 m_cachedDrawLooper->addLayerOnTop(skInfo); | |
145 } | |
81 } | 146 } |
147 } | |
82 | 148 |
83 if (blur) | 149 void DrawLooper::buildCachedImageFilter() |
84 info.fPaintBits |= SkLayerDrawLooper::kMaskFilter_Bit; // our blur | 150 { |
85 info.fPaintBits |= SkLayerDrawLooper::kColorFilter_Bit; | 151 ASSERT(m_layerInfo.size() == 2); |
86 info.fOffset.set(offset.width(), offset.height()); | 152 ASSERT(m_layerInfo[0].m_layerType == ShadowLayer); |
87 info.fPostTranslate = (shadowTransformMode == ShadowIgnoresTransforms); | 153 ASSERT(m_layerInfo[1].m_layerType == UnmodifiedLayer); |
154 ASSERT(m_layerInfo[0].m_shadowAlphaMode == ShadowRespectsAlpha); | |
155 ASSERT(m_layerInfo[0].m_shadowTransformMode == ShadowIgnoresTransforms); | |
156 const float blurToSigmaFactor = 0.25; | |
157 SkColor skColor = m_layerInfo[0].m_color.rgb(); | |
158 m_cachedImageFilter.reset(new SkDropShadowImageFilter(m_layerInfo[0].m_offse t.width(), m_layerInfo[0].m_offset.height(), m_layerInfo[0].m_blur * blurToSigma Factor, skColor)); | |
159 } | |
88 | 160 |
89 SkPaint* paint = m_skDrawLooper->addLayerOnTop(info); | 161 bool DrawLooper::shouldUseImageFilterToDrawBitmap(const SkBitmap& bitmap) |
162 { | |
163 if (bitmap.isOpaque() || !m_layerInfo.size()) | |
164 return false; | |
90 | 165 |
91 if (blur) { | 166 #if !ASSERT_DISABLED |
92 uint32_t mfFlags = SkBlurMaskFilter::kHighQuality_BlurFlag; | 167 // Verify that cases that require a mask filter to render correctly are of |
93 if (shadowTransformMode == ShadowIgnoresTransforms) | 168 // a form that can be handled by DropShadowImageFilter. |
94 mfFlags |= SkBlurMaskFilter::kIgnoreTransform_BlurFlag; | 169 LayerVector::const_iterator info; |
95 RefPtr<SkMaskFilter> mf = adoptRef(SkBlurMaskFilter::Create( | 170 int unmodifiedCount = 0; |
96 (double)blur / 2.0, SkBlurMaskFilter::kNormal_BlurStyle, mfFlags)); | 171 int shadowCount = 0; |
97 paint->setMaskFilter(mf.get()); | 172 bool needsFilter = false; |
173 for (info = m_layerInfo.begin(); info < m_layerInfo.end(); ++info) { | |
174 if (info->m_layerType == ShadowLayer) { | |
175 needsFilter = needsFilter || (info->m_blur && info->m_shadowAlphaMod e == ShadowRespectsAlpha); | |
176 shadowCount++; | |
177 } else { | |
178 unmodifiedCount++; | |
179 } | |
180 | |
98 } | 181 } |
182 if (needsFilter) { | |
183 // If any of the following assertions ever fire, it means that we are hi tting | |
184 // case that may not be rendered correclty by the DrawLooper and cannot be | |
185 // handled by DropShadowImageFilter. | |
186 ASSERT(shadowCount == 1); | |
187 ASSERT(unmodifiedCount == 1); | |
188 ASSERT(m_layerInfo[0].m_layerType == ShadowLayer); | |
189 ASSERT(m_layerInfo[0].m_shadowTransformMode == ShadowIgnoresTransforms); | |
190 } | |
191 #endif | |
99 | 192 |
100 RefPtr<SkColorFilter> cf = adoptRef(SkColorFilter::CreateModeFilter(skColor, SkXfermode::kSrcIn_Mode)); | 193 return m_layerInfo.size() == 2 |
101 paint->setColorFilter(cf.get()); | 194 && m_layerInfo[0].m_layerType == ShadowLayer |
195 && m_layerInfo[0].m_shadowAlphaMode == ShadowRespectsAlpha | |
196 && m_layerInfo[0].m_shadowTransformMode == ShadowIgnoresTransforms | |
197 && m_layerInfo[0].m_blur | |
198 && m_layerInfo[1].m_layerType == UnmodifiedLayer; | |
102 } | 199 } |
103 | 200 |
104 } // namespace WebCore | 201 } // namespace WebCore |
OLD | NEW |