1 /* 2 * Copyright (C) 2009 Dirk Schulze <krit (at) webkit.org> 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/SVGFEMorphologyElement.h" 23 24 #include "core/SVGNames.h" 25 #include "platform/graphics/filters/FilterEffect.h" 26 #include "core/svg/SVGParserUtilities.h" 27 #include "core/svg/graphics/filters/SVGFilterBuilder.h" 28 29 namespace blink { 30 31 template<> const SVGEnumerationStringEntries& getStaticStringEntries<MorphologyOperatorType>() 32 { 33 DEFINE_STATIC_LOCAL(SVGEnumerationStringEntries, entries, ()); 34 if (entries.isEmpty()) { 35 entries.append(std::make_pair(FEMORPHOLOGY_OPERATOR_ERODE, "erode")); 36 entries.append(std::make_pair(FEMORPHOLOGY_OPERATOR_DILATE, "dilate")); 37 } 38 return entries; 39 } 40 41 inline SVGFEMorphologyElement::SVGFEMorphologyElement(Document& document) 42 : SVGFilterPrimitiveStandardAttributes(SVGNames::feMorphologyTag, document) 43 , m_radius(SVGAnimatedNumberOptionalNumber::create(this, SVGNames::radiusAttr)) 44 , m_in1(SVGAnimatedString::create(this, SVGNames::inAttr, SVGString::create())) 45 , m_svgOperator(SVGAnimatedEnumeration<MorphologyOperatorType>::create(this, SVGNames::operatorAttr, FEMORPHOLOGY_OPERATOR_ERODE)) 46 { 47 addToPropertyMap(m_radius); 48 addToPropertyMap(m_in1); 49 addToPropertyMap(m_svgOperator); 50 } 51 52 DEFINE_NODE_FACTORY(SVGFEMorphologyElement) 53 54 bool SVGFEMorphologyElement::isSupportedAttribute(const QualifiedName& attrName) 55 { 56 DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ()); 57 if (supportedAttributes.isEmpty()) { 58 supportedAttributes.add(SVGNames::inAttr); 59 supportedAttributes.add(SVGNames::operatorAttr); 60 supportedAttributes.add(SVGNames::radiusAttr); 61 } 62 return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName); 63 } 64 65 void SVGFEMorphologyElement::parseAttribute(const QualifiedName& name, const AtomicString& value) 66 { 67 if (!isSupportedAttribute(name)) { 68 SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value); 69 return; 70 } 71 72 SVGParsingError parseError = NoError; 73 74 if (name == SVGNames::inAttr) 75 m_in1->setBaseValueAsString(value, parseError); 76 else if (name == SVGNames::radiusAttr) 77 m_radius->setBaseValueAsString(value, parseError); 78 else if (name == SVGNames::operatorAttr) 79 m_svgOperator->setBaseValueAsString(value, parseError); 80 else 81 ASSERT_NOT_REACHED(); 82 83 reportAttributeParsingError(parseError, name, value); 84 } 85 86 bool SVGFEMorphologyElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName) 87 { 88 FEMorphology* morphology = static_cast<FEMorphology*>(effect); 89 if (attrName == SVGNames::operatorAttr) 90 return morphology->setMorphologyOperator(m_svgOperator->currentValue()->enumValue()); 91 if (attrName == SVGNames::radiusAttr) { 92 // Both setRadius functions should be evaluated separately. 93 bool isRadiusXChanged = morphology->setRadiusX(radiusX()->currentValue()->value()); 94 bool isRadiusYChanged = morphology->setRadiusY(radiusY()->currentValue()->value()); 95 return isRadiusXChanged || isRadiusYChanged; 96 } 97 98 ASSERT_NOT_REACHED(); 99 return false; 100 } 101 102 void SVGFEMorphologyElement::svgAttributeChanged(const QualifiedName& attrName) 103 { 104 if (!isSupportedAttribute(attrName)) { 105 SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName); 106 return; 107 } 108 109 SVGElement::InvalidationGuard invalidationGuard(this); 110 111 if (attrName == SVGNames::operatorAttr || attrName == SVGNames::radiusAttr) { 112 primitiveAttributeChanged(attrName); 113 return; 114 } 115 116 if (attrName == SVGNames::inAttr) { 117 invalidate(); 118 return; 119 } 120 121 ASSERT_NOT_REACHED(); 122 } 123 124 PassRefPtr<FilterEffect> SVGFEMorphologyElement::build(SVGFilterBuilder* filterBuilder, Filter* filter) 125 { 126 FilterEffect* input1 = filterBuilder->getEffectById(AtomicString(m_in1->currentValue()->value())); 127 float xRadius = radiusX()->currentValue()->value(); 128 float yRadius = radiusY()->currentValue()->value(); 129 130 if (!input1) 131 return nullptr; 132 133 if (xRadius < 0 || yRadius < 0) 134 return nullptr; 135 136 RefPtr<FilterEffect> effect = FEMorphology::create(filter, m_svgOperator->currentValue()->enumValue(), xRadius, yRadius); 137 effect->inputEffects().append(input1); 138 return effect.release(); 139 } 140 141 } // namespace blink 142