/* * Copyright (C) 2013 Google Inc. All rights reserved. * Copyright (C) 2016 Apple 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. */ #pragma once #include "CSSValueKeywords.h" #include "Color.h" namespace WebCore { class StyleColor { public: StyleColor() : m_currentColor(true) { } StyleColor(Color color) : m_color(color) , m_currentColor(false) { } static StyleColor currentColor() { return StyleColor(); } bool isCurrentColor() const { return m_currentColor; } const Color& getColor() const { ASSERT(!isCurrentColor()); return m_color; } const Color& resolve(const Color& currentColor) const { return m_currentColor ? currentColor : m_color; } static Color colorFromKeyword(CSSValueID); static bool isColorKeyword(CSSValueID); static bool isSystemColor(CSSValueID); private: Color m_color; bool m_currentColor; }; inline bool operator==(const StyleColor& a, const StyleColor& b) { if (a.isCurrentColor() || b.isCurrentColor()) return a.isCurrentColor() && b.isCurrentColor(); return a.getColor() == b.getColor(); } inline bool operator!=(const StyleColor& a, const StyleColor& b) { return !(a == b); } } // namespace WebCore