1 /* 2 * Copyright (C) 2000 Lars Knoll (knoll (at) kde.org) 3 * (C) 2000 Antti Koivisto (koivisto (at) kde.org) 4 * (C) 2000 Dirk Mueller (mueller (at) kde.org) 5 * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 6 * Copyright (C) 2006 Graham Dennis (graham.dennis (at) gmail.com) 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Library General Public 10 * License as published by the Free Software Foundation; either 11 * version 2 of the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Library General Public License for more details. 17 * 18 * You should have received a copy of the GNU Library General Public License 19 * along with this library; see the file COPYING.LIB. If not, write to 20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 21 * Boston, MA 02110-1301, USA. 22 * 23 */ 24 25 #ifndef ShadowData_h 26 #define ShadowData_h 27 28 #include "core/css/StyleColor.h" 29 #include "core/platform/graphics/FloatRect.h" 30 #include "core/platform/graphics/LayoutRect.h" 31 #include "wtf/OwnPtr.h" 32 #include "wtf/PassOwnPtr.h" 33 34 namespace WebCore { 35 36 enum ShadowStyle { Normal, Inset }; 37 38 // This class holds information about shadows for the text-shadow and box-shadow properties. 39 class ShadowData { 40 WTF_MAKE_FAST_ALLOCATED; 41 public: 42 static PassOwnPtr<ShadowData> create() { return adoptPtr(new ShadowData); } 43 static PassOwnPtr<ShadowData> create(const IntPoint& location, int blur, int spread, ShadowStyle style, const StyleColor& color) 44 { 45 return adoptPtr(new ShadowData(location, blur, spread, style, color)); 46 } 47 // This clones the whole ShadowData linked list. 48 PassOwnPtr<ShadowData> clone() const 49 { 50 return adoptPtr(new ShadowData(*this)); 51 } 52 53 bool operator==(const ShadowData&) const; 54 bool operator!=(const ShadowData& o) const { return !(*this == o); } 55 56 int x() const { return m_location.x(); } 57 int y() const { return m_location.y(); } 58 IntPoint location() const { return m_location; } 59 int blur() const { return m_blur; } 60 int spread() const { return m_spread; } 61 ShadowStyle style() const { return m_style; } 62 const StyleColor& color() const { return m_color; } 63 64 const ShadowData* next() const { return m_next.get(); } 65 void setNext(PassOwnPtr<ShadowData> shadow) { m_next = shadow; } 66 67 void adjustRectForShadow(LayoutRect&, int additionalOutlineSize = 0) const; 68 void adjustRectForShadow(FloatRect&, int additionalOutlineSize = 0) const; 69 70 private: 71 ShadowData() 72 : m_blur(0) 73 , m_spread(0) 74 , m_style(Normal) 75 { 76 } 77 78 ShadowData(const IntPoint& location, int blur, int spread, ShadowStyle style, const StyleColor& color) 79 : m_location(location) 80 , m_blur(blur) 81 , m_spread(spread) 82 , m_color(color) 83 , m_style(style) 84 { 85 } 86 87 ShadowData(const ShadowData&); 88 89 IntPoint m_location; 90 int m_blur; 91 int m_spread; 92 StyleColor m_color; 93 ShadowStyle m_style; 94 OwnPtr<ShadowData> m_next; 95 }; 96 97 // Helper method to handle nullptr, otherwise all callers need an ugly ternary. 98 inline PassOwnPtr<ShadowData> cloneShadow(const ShadowData* shadow) 99 { 100 return shadow ? shadow->clone() : nullptr; 101 } 102 103 inline PassOwnPtr<ShadowData> cloneShadow(const OwnPtr<ShadowData>& shadow) 104 { 105 return cloneShadow(shadow.get()); 106 } 107 108 } // namespace WebCore 109 110 #endif // ShadowData_h 111
