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1 /* | 1 /* |
2 * Copyright (C) 2011 Apple Inc. All rights reserved. | 2 * Copyright (C) 2011 Apple 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 | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
11 * documentation and/or other materials provided with the distribution. | 11 * documentation and/or other materials provided with the distribution. |
12 * | 12 * |
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 */ | 24 */ |
25 | 25 |
26 #include "core/style/FilterOperation.h" | 26 #include "core/style/FilterOperation.h" |
27 | 27 |
28 #include "platform/LengthFunctions.h" | 28 #include "platform/LengthFunctions.h" |
29 #include "platform/animation/AnimationUtilities.h" | 29 #include "platform/animation/AnimationUtilities.h" |
| 30 #include "platform/graphics/filters/FEDropShadow.h" |
30 #include "platform/graphics/filters/FEGaussianBlur.h" | 31 #include "platform/graphics/filters/FEGaussianBlur.h" |
31 #include "platform/graphics/filters/Filter.h" | 32 #include "platform/graphics/filters/Filter.h" |
32 #include "platform/graphics/filters/FilterEffect.h" | 33 #include "platform/graphics/filters/FilterEffect.h" |
33 #include "platform/graphics/filters/SkiaImageFilterBuilder.h" | |
34 | 34 |
35 namespace blink { | 35 namespace blink { |
36 | 36 |
37 static inline FloatSize outsetSizeForBlur(float stdDeviation) { | |
38 IntSize kernelSize = FEGaussianBlur::calculateUnscaledKernelSize( | |
39 FloatPoint(stdDeviation, stdDeviation)); | |
40 FloatSize outset; | |
41 // We take the half kernel size and multiply it with three, because we run box | |
42 // blur three times. | |
43 outset.setWidth(3.0f * kernelSize.width() * 0.5f); | |
44 outset.setHeight(3.0f * kernelSize.height() * 0.5f); | |
45 return outset; | |
46 } | |
47 | |
48 FilterOperation* FilterOperation::blend(const FilterOperation* from, | 37 FilterOperation* FilterOperation::blend(const FilterOperation* from, |
49 const FilterOperation* to, | 38 const FilterOperation* to, |
50 double progress) { | 39 double progress) { |
51 DCHECK(from || to); | 40 DCHECK(from || to); |
52 if (to) | 41 if (to) |
53 return to->blend(from, progress); | 42 return to->blend(from, progress); |
54 return from->blend(0, 1 - progress); | 43 return from->blend(0, 1 - progress); |
55 } | 44 } |
56 | 45 |
57 DEFINE_TRACE(ReferenceFilterOperation) { | 46 DEFINE_TRACE(ReferenceFilterOperation) { |
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139 case OPACITY: | 128 case OPACITY: |
140 result = clampTo<double>(result, 0, 1); | 129 result = clampTo<double>(result, 0, 1); |
141 break; | 130 break; |
142 default: | 131 default: |
143 NOTREACHED(); | 132 NOTREACHED(); |
144 } | 133 } |
145 return BasicComponentTransferFilterOperation::create(result, m_type); | 134 return BasicComponentTransferFilterOperation::create(result, m_type); |
146 } | 135 } |
147 | 136 |
148 FloatRect BlurFilterOperation::mapRect(const FloatRect& rect) const { | 137 FloatRect BlurFilterOperation::mapRect(const FloatRect& rect) const { |
149 // Matches FEGaussianBlur::mapRect. | |
150 float stdDeviation = floatValueForLength(m_stdDeviation, 0); | 138 float stdDeviation = floatValueForLength(m_stdDeviation, 0); |
151 FloatSize outsetSize = outsetSizeForBlur(stdDeviation); | 139 return FEGaussianBlur::mapEffect(FloatSize(stdDeviation, stdDeviation), rect); |
152 FloatRect mappedRect = rect; | |
153 mappedRect.inflateX(outsetSize.width()); | |
154 mappedRect.inflateY(outsetSize.height()); | |
155 return mappedRect; | |
156 } | 140 } |
157 | 141 |
158 FilterOperation* BlurFilterOperation::blend(const FilterOperation* from, | 142 FilterOperation* BlurFilterOperation::blend(const FilterOperation* from, |
159 double progress) const { | 143 double progress) const { |
160 LengthType lengthType = m_stdDeviation.type(); | 144 LengthType lengthType = m_stdDeviation.type(); |
161 if (!from) | 145 if (!from) |
162 return BlurFilterOperation::create(m_stdDeviation.blend( | 146 return BlurFilterOperation::create(m_stdDeviation.blend( |
163 Length(lengthType), progress, ValueRangeNonNegative)); | 147 Length(lengthType), progress, ValueRangeNonNegative)); |
164 | 148 |
165 const BlurFilterOperation* fromOp = toBlurFilterOperation(from); | 149 const BlurFilterOperation* fromOp = toBlurFilterOperation(from); |
166 return BlurFilterOperation::create(m_stdDeviation.blend( | 150 return BlurFilterOperation::create(m_stdDeviation.blend( |
167 fromOp->m_stdDeviation, progress, ValueRangeNonNegative)); | 151 fromOp->m_stdDeviation, progress, ValueRangeNonNegative)); |
168 } | 152 } |
169 | 153 |
170 FloatRect DropShadowFilterOperation::mapRect(const FloatRect& rect) const { | 154 FloatRect DropShadowFilterOperation::mapRect(const FloatRect& rect) const { |
171 FloatSize outsetSize = outsetSizeForBlur(m_stdDeviation); | 155 float stdDeviation = m_stdDeviation; |
172 FloatRect mappedRect = rect; | 156 return FEDropShadow::mapEffect(FloatSize(stdDeviation, stdDeviation), |
173 mappedRect.inflateX(outsetSize.width()); | 157 FloatPoint(m_location), rect); |
174 mappedRect.inflateY(outsetSize.height()); | |
175 mappedRect.moveBy(m_location); | |
176 mappedRect.unite(rect); | |
177 return mappedRect; | |
178 } | 158 } |
179 | 159 |
180 FilterOperation* DropShadowFilterOperation::blend(const FilterOperation* from, | 160 FilterOperation* DropShadowFilterOperation::blend(const FilterOperation* from, |
181 double progress) const { | 161 double progress) const { |
182 if (!from) { | 162 if (!from) { |
183 return DropShadowFilterOperation::create( | 163 return DropShadowFilterOperation::create( |
184 blink::blend(IntPoint(), m_location, progress), | 164 blink::blend(IntPoint(), m_location, progress), |
185 blink::blend(0, m_stdDeviation, progress), | 165 blink::blend(0, m_stdDeviation, progress), |
186 blink::blend(Color(Color::transparent), m_color, progress)); | 166 blink::blend(Color(Color::transparent), m_color, progress)); |
187 } | 167 } |
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204 } | 184 } |
205 | 185 |
206 bool BoxReflectFilterOperation::operator==(const FilterOperation& o) const { | 186 bool BoxReflectFilterOperation::operator==(const FilterOperation& o) const { |
207 if (!isSameType(o)) | 187 if (!isSameType(o)) |
208 return false; | 188 return false; |
209 const auto& other = static_cast<const BoxReflectFilterOperation&>(o); | 189 const auto& other = static_cast<const BoxReflectFilterOperation&>(o); |
210 return m_reflection == other.m_reflection; | 190 return m_reflection == other.m_reflection; |
211 } | 191 } |
212 | 192 |
213 } // namespace blink | 193 } // namespace blink |
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