1/* 2 * Copyright (C) Research In Motion Limited 2011. All rights reserved. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 20#include "config.h" 21#include "SVGAnimatedColor.h" 22 23#include "ColorDistance.h" 24#include "RenderElement.h" 25#include "SVGAnimateElement.h" 26#include "SVGColor.h" 27 28namespace WebCore { 29 30SVGAnimatedColorAnimator::SVGAnimatedColorAnimator(SVGAnimationElement* animationElement, SVGElement* contextElement) 31 : SVGAnimatedTypeAnimator(AnimatedColor, animationElement, contextElement) 32{ 33} 34 35std::unique_ptr<SVGAnimatedType> SVGAnimatedColorAnimator::constructFromString(const String& string) 36{ 37 auto animatedType = SVGAnimatedType::createColor(std::make_unique<Color>()); 38 animatedType->color() = string.isEmpty() ? Color() : SVGColor::colorFromRGBColorString(string); 39 return animatedType; 40} 41 42void SVGAnimatedColorAnimator::addAnimatedTypes(SVGAnimatedType* from, SVGAnimatedType* to) 43{ 44 ASSERT(from->type() == AnimatedColor); 45 ASSERT(from->type() == to->type()); 46 to->color() = ColorDistance::addColors(from->color(), to->color()); 47} 48 49static inline void adjustForCurrentColor(SVGElement* targetElement, Color& color) 50{ 51 ASSERT(targetElement); 52 53 if (RenderElement* targetRenderer = targetElement->renderer()) 54 color = targetRenderer->style().visitedDependentColor(CSSPropertyColor); 55 else 56 color = Color(); 57} 58 59static Color parseColorFromString(SVGAnimationElement*, const String& string) 60{ 61 return SVGColor::colorFromRGBColorString(string); 62} 63 64void SVGAnimatedColorAnimator::calculateAnimatedValue(float percentage, unsigned repeatCount, SVGAnimatedType* from, SVGAnimatedType* to, SVGAnimatedType* toAtEndOfDuration, SVGAnimatedType* animated) 65{ 66 ASSERT(m_animationElement); 67 ASSERT(m_contextElement); 68 69 Color fromColor = m_animationElement->animationMode() == ToAnimation ? animated->color() : from->color(); 70 Color toColor = to->color(); 71 const Color& toAtEndOfDurationColor = toAtEndOfDuration->color(); 72 Color& animatedColor = animated->color(); 73 74 // Apply CSS inheritance rules. 75 m_animationElement->adjustForInheritance<Color>(parseColorFromString, m_animationElement->fromPropertyValueType(), fromColor, m_contextElement); 76 m_animationElement->adjustForInheritance<Color>(parseColorFromString, m_animationElement->toPropertyValueType(), toColor, m_contextElement); 77 78 // Apply <animateColor> rules. 79 if (m_animationElement->fromPropertyValueType() == CurrentColorValue) 80 adjustForCurrentColor(m_contextElement, fromColor); 81 if (m_animationElement->toPropertyValueType() == CurrentColorValue) 82 adjustForCurrentColor(m_contextElement, toColor); 83 84 float animatedRed = animatedColor.red(); 85 m_animationElement->animateAdditiveNumber(percentage, repeatCount, fromColor.red(), toColor.red(), toAtEndOfDurationColor.red(), animatedRed); 86 87 float animatedGreen = animatedColor.green(); 88 m_animationElement->animateAdditiveNumber(percentage, repeatCount, fromColor.green(), toColor.green(), toAtEndOfDurationColor.green(), animatedGreen); 89 90 float animatedBlue = animatedColor.blue(); 91 m_animationElement->animateAdditiveNumber(percentage, repeatCount, fromColor.blue(), toColor.blue(), toAtEndOfDurationColor.blue(), animatedBlue); 92 93 float animatedAlpha = animatedColor.alpha(); 94 m_animationElement->animateAdditiveNumber(percentage, repeatCount, fromColor.alpha(), toColor.alpha(), toAtEndOfDurationColor.alpha(), animatedAlpha); 95 96 animatedColor = ColorDistance::clampColor(static_cast<int>(roundf(animatedRed)), static_cast<int>(roundf(animatedGreen)), static_cast<int>(roundf(animatedBlue)), static_cast<int>(roundf(animatedAlpha))); 97} 98 99float SVGAnimatedColorAnimator::calculateDistance(const String& fromString, const String& toString) 100{ 101 ASSERT(m_contextElement); 102 Color from = SVGColor::colorFromRGBColorString(fromString); 103 if (!from.isValid()) 104 return -1; 105 Color to = SVGColor::colorFromRGBColorString(toString); 106 if (!to.isValid()) 107 return -1; 108 return ColorDistance(from, to).distance(); 109} 110 111} 112