1/* 2 * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org> 3 * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org> 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public License 16 * along with this library; see the file COPYING.LIB. If not, write to 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 */ 20 21#include "config.h" 22 23#include "core/svg/SVGFEBlendElement.h" 24 25#include "SVGNames.h" 26#include "platform/graphics/filters/FilterEffect.h" 27#include "core/svg/SVGElementInstance.h" 28#include "core/svg/graphics/filters/SVGFilterBuilder.h" 29 30namespace WebCore { 31 32// Animated property definitions 33DEFINE_ANIMATED_STRING(SVGFEBlendElement, SVGNames::inAttr, In1, in1) 34DEFINE_ANIMATED_STRING(SVGFEBlendElement, SVGNames::in2Attr, In2, in2) 35DEFINE_ANIMATED_ENUMERATION(SVGFEBlendElement, SVGNames::modeAttr, Mode, mode, BlendModeType) 36 37BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGFEBlendElement) 38 REGISTER_LOCAL_ANIMATED_PROPERTY(in1) 39 REGISTER_LOCAL_ANIMATED_PROPERTY(in2) 40 REGISTER_LOCAL_ANIMATED_PROPERTY(mode) 41 REGISTER_PARENT_ANIMATED_PROPERTIES(SVGFilterPrimitiveStandardAttributes) 42END_REGISTER_ANIMATED_PROPERTIES 43 44inline SVGFEBlendElement::SVGFEBlendElement(Document& document) 45 : SVGFilterPrimitiveStandardAttributes(SVGNames::feBlendTag, document) 46 , m_mode(FEBLEND_MODE_NORMAL) 47{ 48 ScriptWrappable::init(this); 49 registerAnimatedPropertiesForSVGFEBlendElement(); 50} 51 52PassRefPtr<SVGFEBlendElement> SVGFEBlendElement::create(Document& document) 53{ 54 return adoptRef(new SVGFEBlendElement(document)); 55} 56 57bool SVGFEBlendElement::isSupportedAttribute(const QualifiedName& attrName) 58{ 59 DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ()); 60 if (supportedAttributes.isEmpty()) { 61 supportedAttributes.add(SVGNames::modeAttr); 62 supportedAttributes.add(SVGNames::inAttr); 63 supportedAttributes.add(SVGNames::in2Attr); 64 } 65 return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName); 66} 67 68void SVGFEBlendElement::parseAttribute(const QualifiedName& name, const AtomicString& value) 69{ 70 if (!isSupportedAttribute(name)) { 71 SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value); 72 return; 73 } 74 75 if (name == SVGNames::modeAttr) { 76 BlendModeType propertyValue = SVGPropertyTraits<BlendModeType>::fromString(value); 77 if (propertyValue > 0) 78 setModeBaseValue(propertyValue); 79 return; 80 } 81 82 if (name == SVGNames::inAttr) { 83 setIn1BaseValue(value); 84 return; 85 } 86 87 if (name == SVGNames::in2Attr) { 88 setIn2BaseValue(value); 89 return; 90 } 91 92 ASSERT_NOT_REACHED(); 93} 94 95bool SVGFEBlendElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName) 96{ 97 FEBlend* blend = static_cast<FEBlend*>(effect); 98 if (attrName == SVGNames::modeAttr) 99 return blend->setBlendMode(modeCurrentValue()); 100 101 ASSERT_NOT_REACHED(); 102 return false; 103} 104 105void SVGFEBlendElement::svgAttributeChanged(const QualifiedName& attrName) 106{ 107 if (!isSupportedAttribute(attrName)) { 108 SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName); 109 return; 110 } 111 112 SVGElementInstance::InvalidationGuard invalidationGuard(this); 113 114 if (attrName == SVGNames::modeAttr) { 115 primitiveAttributeChanged(attrName); 116 return; 117 } 118 119 if (attrName == SVGNames::inAttr || attrName == SVGNames::in2Attr) { 120 invalidate(); 121 return; 122 } 123 124 ASSERT_NOT_REACHED(); 125} 126 127PassRefPtr<FilterEffect> SVGFEBlendElement::build(SVGFilterBuilder* filterBuilder, Filter* filter) 128{ 129 FilterEffect* input1 = filterBuilder->getEffectById(in1CurrentValue()); 130 FilterEffect* input2 = filterBuilder->getEffectById(in2CurrentValue()); 131 132 if (!input1 || !input2) 133 return 0; 134 135 RefPtr<FilterEffect> effect = FEBlend::create(filter, modeCurrentValue()); 136 FilterEffectVector& inputEffects = effect->inputEffects(); 137 inputEffects.reserveCapacity(2); 138 inputEffects.append(input1); 139 inputEffects.append(input2); 140 return effect.release(); 141} 142 143} 144