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 #ifndef ShadowList_h 32 #define ShadowList_h 33 34 #include "core/rendering/style/ShadowData.h" 35 #include "wtf/RefCounted.h" 36 #include "wtf/Vector.h" 37 38 namespace WebCore { 39 40 class FloatRect; 41 class LayoutRect; 42 43 typedef Vector<ShadowData, 1> ShadowDataVector; 44 45 // These are used to store shadows in specified order, but we usually want to 46 // iterate over them backwards as the first-specified shadow is painted on top. 47 class ShadowList : public RefCounted<ShadowList> { 48 public: 49 // This consumes passed in vector. adopt(ShadowDataVector & shadows)50 static PassRefPtr<ShadowList> adopt(ShadowDataVector& shadows) 51 { 52 return adoptRef(new ShadowList(shadows)); 53 } shadows()54 const ShadowDataVector& shadows() const { return m_shadows; } 55 bool operator==(const ShadowList& o) const { return m_shadows == o.m_shadows; } 56 bool operator!=(const ShadowList& o) const { return !(*this == o); } 57 58 static PassRefPtr<ShadowList> blend(const ShadowList* from, const ShadowList* to, double progress); 59 60 void adjustRectForShadow(LayoutRect&, int additionalOutlineSize = 0) const; 61 void adjustRectForShadow(FloatRect&, int additionalOutlineSize = 0) const; 62 63 private: ShadowList(ShadowDataVector & shadows)64 ShadowList(ShadowDataVector& shadows) 65 { 66 // If we have no shadows, we use a null ShadowList 67 ASSERT(!shadows.isEmpty()); 68 m_shadows.swap(shadows); 69 m_shadows.shrinkToFit(); 70 } 71 ShadowDataVector m_shadows; 72 }; 73 74 } // namespace WebCore 75 76 #endif // ShadowList_h 77