| /* |
| * Copyright (C) 2013 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef ShadowList_h |
| #define ShadowList_h |
| |
| #include "core/style/ComputedStyle.h" |
| #include "core/style/ShadowData.h" |
| #include "platform/geometry/FloatRectOutsets.h" |
| #include "platform/geometry/LayoutRect.h" |
| #include "platform/graphics/DrawLooperBuilder.h" |
| #include "wtf/RefCounted.h" |
| #include "wtf/Vector.h" |
| #include <memory> |
| |
| namespace blink { |
| |
| class FloatRect; |
| class LayoutRect; |
| |
| typedef Vector<ShadowData, 1> ShadowDataVector; |
| |
| // These are used to store shadows in specified order, but we usually want to |
| // iterate over them backwards as the first-specified shadow is painted on top. |
| class ShadowList : public RefCounted<ShadowList> { |
| public: |
| // This consumes passed in vector. |
| static PassRefPtr<ShadowList> adopt(ShadowDataVector& shadows) { |
| return adoptRef(new ShadowList(shadows)); |
| } |
| const ShadowDataVector& shadows() const { return m_shadows; } |
| bool operator==(const ShadowList& o) const { |
| return m_shadows == o.m_shadows; |
| } |
| bool operator!=(const ShadowList& o) const { return !(*this == o); } |
| |
| static PassRefPtr<ShadowList> blend(const ShadowList* from, |
| const ShadowList* to, |
| double progress, |
| const Color& currentColor); |
| |
| // Outsets needed to include all shadows in this list, as well as the |
| // source (i.e. no outsets will be negative). |
| FloatRectOutsets rectOutsetsIncludingOriginal() const; |
| |
| void adjustRectForShadow(FloatRect&) const; |
| |
| sk_sp<SkDrawLooper> createDrawLooper(DrawLooperBuilder::ShadowAlphaMode, |
| const Color& currentColor, |
| bool isHorizontal = true) const; |
| |
| private: |
| ShadowList(ShadowDataVector& shadows) { |
| // If we have no shadows, we use a null ShadowList |
| ASSERT(!shadows.isEmpty()); |
| m_shadows.swap(shadows); |
| m_shadows.shrinkToFit(); |
| } |
| ShadowDataVector m_shadows; |
| }; |
| |
| } // namespace blink |
| |
| #endif // ShadowList_h |