15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2007 Eric Seidel <eric@webkit.org> 35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * This library is free software; you can redistribute it and/or 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modify it under the terms of the GNU Library General Public 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * License as published by the Free Software Foundation; either 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * version 2 of the License, or (at your option) any later version. 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * This library is distributed in the hope that it will be useful, 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * but WITHOUT ANY WARRANTY; without even the implied warranty of 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Library General Public License for more details. 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * You should have received a copy of the GNU Library General Public License 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * along with this library; see the file COPYING.LIB. If not, write to 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Boston, MA 02110-1301, USA. 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifndef ColorDistance_h 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define ColorDistance_h 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)namespace WebCore { 2402772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class Color; 2602772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class ColorDistance { 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)public: 295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ColorDistance(); 305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ColorDistance(const Color& fromColor, const Color& toColor); 315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ColorDistance(int redDiff, int blueDiff, int greenDiff); 325c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ColorDistance scaledDistance(float scaleFactor) const; 345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) Color addToColor(const Color&) const; 3502772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) static Color addColors(const Color&, const Color&); 375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) static Color clampColor(int red, int green, int blue, int alpha); 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool isZero() const; 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) float distance() const; 4202772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)private: 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) int m_redDiff; 455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) int m_greenDiff; 465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) int m_blueDiff; 475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)}; 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif // ColorDistance_h 51