15d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)/* 25d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) * Copyright (C) 2007 Eric Seidel <eric@webkit.org> 35d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) * 45d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) * This library is free software; you can redistribute it and/or 55d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) * modify it under the terms of the GNU Library General Public 65d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) * License as published by the Free Software Foundation; either 75d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) * version 2 of the License, or (at your option) any later version. 85d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) * 95d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) * This library is distributed in the hope that it will be useful, 105d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) * but WITHOUT ANY WARRANTY; without even the implied warranty of 115d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 125c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu * Library General Public License for more details. 135d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) * 14116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch * You should have received a copy of the GNU Library General Public License 155d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) * along with this library; see the file COPYING.LIB. If not, write to 165d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 175d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) * Boston, MA 02110-1301, USA. 185d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) */ 195d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 205d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "config.h" 215d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "core/svg/ColorDistance.h" 225d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 235d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "platform/graphics/Color.h" 245d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 255d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)namespace blink { 265d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 275d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)Color ColorDistance::addColors(const Color& first, const Color& second) 285d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles){ 295d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return Color(first.red() + second.red(), first.green() + second.green(), first.blue() + second.blue()); 305d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)} 315d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 325d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)float ColorDistance::distance(const Color& fromColor, const Color& toColor) 335d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles){ 345d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) int redDiff = toColor.red() - fromColor.red(); 355d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) int greenDiff = toColor.green() - fromColor.green(); 365d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) int blueDiff = toColor.blue() - fromColor.blue(); 375d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 385d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // This is just a simple distance calculation, not respecting color spaces 395d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return sqrtf(redDiff * redDiff + blueDiff * blueDiff + greenDiff * greenDiff); 405d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)} 415d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 425d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)} 435d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)