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 22 #include "core/svg/SVGAnimatedColor.h" 23 24 #include "core/rendering/RenderObject.h" 25 #include "core/svg/ColorDistance.h" 26 #include "core/svg/SVGAnimateElement.h" 27 28 namespace WebCore { 29 30 String SVGColorProperty::valueAsString() const 31 { 32 return m_styleColor.isCurrentColor() ? "currentColor" : m_styleColor.color().serializedAsCSSComponentValue(); 33 } 34 35 PassRefPtr<SVGPropertyBase> SVGColorProperty::cloneForAnimation(const String&) const 36 { 37 // SVGAnimatedColor is deprecated. So No SVG DOM animation. 38 ASSERT_NOT_REACHED(); 39 return nullptr; 40 } 41 42 static inline Color fallbackColorForCurrentColor(SVGElement* targetElement) 43 { 44 ASSERT(targetElement); 45 if (RenderObject* targetRenderer = targetElement->renderer()) 46 return targetRenderer->style()->visitedDependentColor(CSSPropertyColor); 47 else 48 return Color::transparent; 49 } 50 51 void SVGColorProperty::add(PassRefPtrWillBeRawPtr<SVGPropertyBase> other, SVGElement* contextElement) 52 { 53 ASSERT(contextElement); 54 55 Color fallbackColor = fallbackColorForCurrentColor(contextElement); 56 Color fromColor = toSVGColorProperty(other)->m_styleColor.resolve(fallbackColor); 57 Color toColor = m_styleColor.resolve(fallbackColor); 58 m_styleColor = StyleColor(ColorDistance::addColors(fromColor, toColor)); 59 } 60 61 void SVGColorProperty::calculateAnimatedValue(SVGAnimationElement* animationElement, float percentage, unsigned repeatCount, PassRefPtr<SVGPropertyBase> fromValue, PassRefPtr<SVGPropertyBase> toValue, PassRefPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement* contextElement) 62 { 63 StyleColor fromStyleColor = toSVGColorProperty(fromValue)->m_styleColor; 64 StyleColor toStyleColor = toSVGColorProperty(toValue)->m_styleColor; 65 StyleColor toAtEndOfDurationStyleColor = toSVGColorProperty(toAtEndOfDurationValue)->m_styleColor; 66 67 // Apply currentColor rules. 68 ASSERT(contextElement); 69 Color fallbackColor = fallbackColorForCurrentColor(contextElement); 70 Color fromColor = fromStyleColor.resolve(fallbackColor); 71 Color toColor = toStyleColor.resolve(fallbackColor); 72 Color toAtEndOfDurationColor = toAtEndOfDurationStyleColor.resolve(fallbackColor); 73 Color animatedColor = m_styleColor.resolve(fallbackColor); 74 75 ASSERT(animationElement); 76 float animatedRed = animatedColor.red(); 77 animationElement->animateAdditiveNumber(percentage, repeatCount, fromColor.red(), toColor.red(), toAtEndOfDurationColor.red(), animatedRed); 78 79 float animatedGreen = animatedColor.green(); 80 animationElement->animateAdditiveNumber(percentage, repeatCount, fromColor.green(), toColor.green(), toAtEndOfDurationColor.green(), animatedGreen); 81 82 float animatedBlue = animatedColor.blue(); 83 animationElement->animateAdditiveNumber(percentage, repeatCount, fromColor.blue(), toColor.blue(), toAtEndOfDurationColor.blue(), animatedBlue); 84 85 float animatedAlpha = animatedColor.alpha(); 86 animationElement->animateAdditiveNumber(percentage, repeatCount, fromColor.alpha(), toColor.alpha(), toAtEndOfDurationColor.alpha(), animatedAlpha); 87 88 m_styleColor = StyleColor(makeRGBA(roundf(animatedRed), roundf(animatedGreen), roundf(animatedBlue), roundf(animatedAlpha))); 89 } 90 91 float SVGColorProperty::calculateDistance(PassRefPtr<SVGPropertyBase> toValue, SVGElement* contextElement) 92 { 93 ASSERT(contextElement); 94 Color fallbackColor = fallbackColorForCurrentColor(contextElement); 95 96 Color fromColor = m_styleColor.resolve(fallbackColor); 97 Color toColor = toSVGColorProperty(toValue)->m_styleColor.resolve(fallbackColor); 98 return ColorDistance::distance(fromColor, toColor); 99 } 100 101 } 102