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#if ENABLE(SVG) && ENABLE(FILTERS) 23#include "SVGFEDropShadowElement.h" 24 25#include "Attribute.h" 26#include "RenderStyle.h" 27#include "SVGElementInstance.h" 28#include "SVGFilterBuilder.h" 29#include "SVGNames.h" 30#include "SVGParserUtilities.h" 31#include "SVGRenderStyle.h" 32 33namespace WebCore { 34 35// Animated property definitions 36DEFINE_ANIMATED_STRING(SVGFEDropShadowElement, SVGNames::inAttr, In1, in1) 37DEFINE_ANIMATED_NUMBER(SVGFEDropShadowElement, SVGNames::dxAttr, Dx, dx) 38DEFINE_ANIMATED_NUMBER(SVGFEDropShadowElement, SVGNames::dyAttr, Dy, dy) 39DEFINE_ANIMATED_NUMBER_MULTIPLE_WRAPPERS(SVGFEDropShadowElement, SVGNames::stdDeviationAttr, stdDeviationXIdentifier(), StdDeviationX, stdDeviationX) 40DEFINE_ANIMATED_NUMBER_MULTIPLE_WRAPPERS(SVGFEDropShadowElement, SVGNames::stdDeviationAttr, stdDeviationYIdentifier(), StdDeviationY, stdDeviationY) 41 42BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGFEDropShadowElement) 43 REGISTER_LOCAL_ANIMATED_PROPERTY(in1) 44 REGISTER_LOCAL_ANIMATED_PROPERTY(dx) 45 REGISTER_LOCAL_ANIMATED_PROPERTY(dy) 46 REGISTER_LOCAL_ANIMATED_PROPERTY(stdDeviationX) 47 REGISTER_LOCAL_ANIMATED_PROPERTY(stdDeviationY) 48 REGISTER_PARENT_ANIMATED_PROPERTIES(SVGFilterPrimitiveStandardAttributes) 49END_REGISTER_ANIMATED_PROPERTIES 50 51inline SVGFEDropShadowElement::SVGFEDropShadowElement(const QualifiedName& tagName, Document* document) 52 : SVGFilterPrimitiveStandardAttributes(tagName, document) 53 , m_dx(2) 54 , m_dy(2) 55 , m_stdDeviationX(2) 56 , m_stdDeviationY(2) 57{ 58 ASSERT(hasTagName(SVGNames::feDropShadowTag)); 59 registerAnimatedPropertiesForSVGFEDropShadowElement(); 60} 61 62PassRefPtr<SVGFEDropShadowElement> SVGFEDropShadowElement::create(const QualifiedName& tagName, Document* document) 63{ 64 return adoptRef(new SVGFEDropShadowElement(tagName, document)); 65} 66 67const AtomicString& SVGFEDropShadowElement::stdDeviationXIdentifier() 68{ 69 DEFINE_STATIC_LOCAL(AtomicString, s_identifier, ("SVGStdDeviationX", AtomicString::ConstructFromLiteral)); 70 return s_identifier; 71} 72 73const AtomicString& SVGFEDropShadowElement::stdDeviationYIdentifier() 74{ 75 DEFINE_STATIC_LOCAL(AtomicString, s_identifier, ("SVGStdDeviationY", AtomicString::ConstructFromLiteral)); 76 return s_identifier; 77} 78 79void SVGFEDropShadowElement::setStdDeviation(float x, float y) 80{ 81 setStdDeviationXBaseValue(x); 82 setStdDeviationYBaseValue(y); 83 invalidate(); 84} 85 86bool SVGFEDropShadowElement::isSupportedAttribute(const QualifiedName& attrName) 87{ 88 DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ()); 89 if (supportedAttributes.isEmpty()) { 90 supportedAttributes.add(SVGNames::inAttr); 91 supportedAttributes.add(SVGNames::dxAttr); 92 supportedAttributes.add(SVGNames::dyAttr); 93 supportedAttributes.add(SVGNames::stdDeviationAttr); 94 } 95 return supportedAttributes.contains<QualifiedName, SVGAttributeHashTranslator>(attrName); 96} 97 98void SVGFEDropShadowElement::parseAttribute(const QualifiedName& name, const AtomicString& value) 99{ 100 if (!isSupportedAttribute(name)) { 101 SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value); 102 return; 103 } 104 105 if (name == SVGNames::stdDeviationAttr) { 106 float x, y; 107 if (parseNumberOptionalNumber(value, x, y)) { 108 setStdDeviationXBaseValue(x); 109 setStdDeviationYBaseValue(y); 110 } 111 return; 112 } 113 114 if (name == SVGNames::inAttr) { 115 setIn1BaseValue(value); 116 return; 117 } 118 119 if (name == SVGNames::dxAttr) { 120 setDxBaseValue(value.toFloat()); 121 return; 122 } 123 124 if (name == SVGNames::dyAttr) { 125 setDyBaseValue(value.toFloat()); 126 return; 127 } 128 129 ASSERT_NOT_REACHED(); 130} 131 132void SVGFEDropShadowElement::svgAttributeChanged(const QualifiedName& attrName) 133{ 134 if (!isSupportedAttribute(attrName)) { 135 SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName); 136 return; 137 } 138 139 SVGElementInstance::InvalidationGuard invalidationGuard(this); 140 141 if (attrName == SVGNames::inAttr 142 || attrName == SVGNames::stdDeviationAttr 143 || attrName == SVGNames::dxAttr 144 || attrName == SVGNames::dyAttr) { 145 invalidate(); 146 return; 147 } 148 149 ASSERT_NOT_REACHED(); 150} 151 152PassRefPtr<FilterEffect> SVGFEDropShadowElement::build(SVGFilterBuilder* filterBuilder, Filter* filter) 153{ 154 RenderObject* renderer = this->renderer(); 155 if (!renderer) 156 return 0; 157 158 if (stdDeviationX() < 0 || stdDeviationY() < 0) 159 return 0; 160 161 ASSERT(renderer->style()); 162 const SVGRenderStyle* svgStyle = renderer->style()->svgStyle(); 163 164 Color color = svgStyle->floodColor(); 165 float opacity = svgStyle->floodOpacity(); 166 167 FilterEffect* input1 = filterBuilder->getEffectById(in1()); 168 if (!input1) 169 return 0; 170 171 RefPtr<FilterEffect> effect = FEDropShadow::create(filter, stdDeviationX(), stdDeviationY(), dx(), dy(), color, opacity); 172 effect->inputEffects().append(input1); 173 return effect.release(); 174} 175 176} 177 178#endif // ENABLE(SVG) 179