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| 1 /* | |
| 2 * Copyright (C) 2013 Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions are | |
| 6 * met: | |
| 7 * | |
| 8 * * Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * * Redistributions in binary form must reproduce the above | |
| 11 * copyright notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * * Neither the name of Google Inc. nor the names of its | |
| 15 * contributors may be used to endorse or promote products derived from | |
| 16 * this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 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. | |
| 29 */ | |
| 30 | |
| 31 #include "config.h" | |
| 32 #include "core/layout/style/ShadowList.h" | |
| 33 | |
| 34 #include "platform/geometry/FloatRect.h" | |
| 35 #include "wtf/OwnPtr.h" | |
| 36 | |
| 37 namespace blink { | |
| 38 | |
| 39 FloatRectOutsets ShadowList::rectOutsetsIncludingOriginal() const | |
| 40 { | |
| 41 FloatRectOutsets outsets; | |
| 42 for (const ShadowData& shadow : shadows()) { | |
| 43 if (shadow.style() == Inset) | |
| 44 continue; | |
| 45 outsets.unite(shadow.rectOutsets()); | |
| 46 } | |
| 47 return outsets; | |
| 48 } | |
| 49 | |
| 50 void ShadowList::adjustRectForShadow(LayoutRect& rect) const | |
| 51 { | |
| 52 rect.expand(rectOutsetsIncludingOriginal()); | |
| 53 } | |
| 54 | |
| 55 void ShadowList::adjustRectForShadow(FloatRect& rect) const | |
| 56 { | |
| 57 rect.expand(rectOutsetsIncludingOriginal()); | |
| 58 } | |
| 59 | |
| 60 PassRefPtr<ShadowList> ShadowList::blend(const ShadowList* from, const ShadowLis
t* to, double progress) | |
| 61 { | |
| 62 size_t fromLength = from ? from->shadows().size() : 0; | |
| 63 size_t toLength = to ? to->shadows().size() : 0; | |
| 64 if (!fromLength && !toLength) | |
| 65 return nullptr; | |
| 66 | |
| 67 ShadowDataVector shadows; | |
| 68 | |
| 69 DEFINE_STATIC_LOCAL(ShadowData, defaultShadowData, (FloatPoint(), 0, 0, Norm
al, Color::transparent)); | |
| 70 DEFINE_STATIC_LOCAL(ShadowData, defaultInsetShadowData, (FloatPoint(), 0, 0,
Inset, Color::transparent)); | |
| 71 | |
| 72 size_t maxLength = std::max(fromLength, toLength); | |
| 73 for (size_t i = 0; i < maxLength; ++i) { | |
| 74 const ShadowData* fromShadow = i < fromLength ? &from->shadows()[i] : 0; | |
| 75 const ShadowData* toShadow = i < toLength ? &to->shadows()[i] : 0; | |
| 76 if (!fromShadow) | |
| 77 fromShadow = toShadow->style() == Inset ? &defaultInsetShadowData :
&defaultShadowData; | |
| 78 else if (!toShadow) | |
| 79 toShadow = fromShadow->style() == Inset ? &defaultInsetShadowData :
&defaultShadowData; | |
| 80 shadows.append(toShadow->blend(*fromShadow, progress)); | |
| 81 } | |
| 82 | |
| 83 return ShadowList::adopt(shadows); | |
| 84 } | |
| 85 | |
| 86 PassOwnPtr<DrawLooperBuilder> ShadowList::createDrawLooper(DrawLooperBuilder::Sh
adowAlphaMode alphaMode, bool isHorizontal) const | |
| 87 { | |
| 88 OwnPtr<DrawLooperBuilder> drawLooperBuilder = DrawLooperBuilder::create(); | |
| 89 for (size_t i = shadows().size(); i--; ) { | |
| 90 const ShadowData& shadow = shadows()[i]; | |
| 91 float shadowX = isHorizontal ? shadow.x() : shadow.y(); | |
| 92 float shadowY = isHorizontal ? shadow.y() : -shadow.x(); | |
| 93 drawLooperBuilder->addShadow(FloatSize(shadowX, shadowY), shadow.blur(),
shadow.color(), | |
| 94 DrawLooperBuilder::ShadowRespectsTransforms, alphaMode); | |
| 95 } | |
| 96 drawLooperBuilder->addUnmodifiedContent(); | |
| 97 return drawLooperBuilder.release(); | |
| 98 } | |
| 99 | |
| 100 } // namespace blink | |
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Chromium Code Reviews
Issue 1045723009:
Move core/layout/style to core/style (Closed)
Base URL: svn://svn.chromium.org/blink/trunk