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 StyleColor_h 32#define StyleColor_h 33 34#include "platform/graphics/Color.h" 35#include "wtf/FastAllocBase.h" 36 37namespace WebCore { 38 39class StyleColor { 40 WTF_MAKE_FAST_ALLOCATED; 41public: 42 StyleColor() 43 : m_color() 44 , m_valid(false) 45 , m_currentColor(false) { } 46 StyleColor(Color color) 47 : m_color(color) 48 , m_valid(true) 49 , m_currentColor(false) { } 50 StyleColor(RGBA32 color, bool valid = true, bool currentColor = false) 51 : m_color(color) 52 , m_valid(valid) 53 , m_currentColor(currentColor) { } 54 StyleColor(int r, int g, int b) 55 : m_color(Color(r, g, b)) 56 , m_valid(true) 57 , m_currentColor(false) { } 58 StyleColor(int r, int g, int b, int a) 59 : m_color(Color(r, g, b, a)) 60 , m_valid(true) 61 , m_currentColor(false) { } 62 StyleColor(const StyleColor& other) 63 : m_color(other.m_color) 64 , m_valid(other.m_valid) 65 , m_currentColor(other.m_currentColor) { } 66 67 Color color() const { return m_color; } 68 bool isValid() const { return m_valid; } 69 bool isCurrentColor() const { return m_currentColor; } 70 bool hasAlpha() const { return m_color.hasAlpha(); } 71 72 void setRGB(int r, int g, int b) 73 { 74 m_color.setRGB(r, g, b); 75 m_valid = true; 76 m_currentColor = false; 77 } 78 79 RGBA32 rgb() const { return m_color.rgb(); } // Preserve the alpha. 80 int red() const { return m_color.red(); } 81 int green() const { return m_color.green(); } 82 int blue() const { return m_color.blue(); } 83 int alpha() const { return m_color.alpha(); } 84 85 static const StyleColor invalid() 86 { 87 return StyleColor(false, false); 88 } 89 static const StyleColor currentColor() 90 { 91 return StyleColor(true, true); 92 } 93 94private: 95 StyleColor(bool invalid, bool currentColor) 96 : m_color() 97 , m_valid(invalid) 98 , m_currentColor(currentColor) { } 99 100 Color m_color; 101 bool m_valid; 102 bool m_currentColor; 103}; 104 105inline bool operator==(const StyleColor& a, const StyleColor& b) 106{ 107 return a.rgb() == b.rgb() && a.isValid() == b.isValid() && a.isCurrentColor() == b.isCurrentColor(); 108} 109 110inline bool operator!=(const StyleColor& a, const StyleColor& b) 111{ 112 return !(a == b); 113} 114 115 116} // namespace WebCore 117 118#endif // StyleColor_h 119