1/* 2 * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org> 3 * Copyright (C) 2004, 2005 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/SVGFEComponentTransferElement.h" 24 25#include "core/SVGNames.h" 26#include "core/dom/ElementTraversal.h" 27#include "core/svg/SVGFEFuncAElement.h" 28#include "core/svg/SVGFEFuncBElement.h" 29#include "core/svg/SVGFEFuncGElement.h" 30#include "core/svg/SVGFEFuncRElement.h" 31#include "core/svg/graphics/filters/SVGFilterBuilder.h" 32#include "platform/graphics/filters/FilterEffect.h" 33 34namespace blink { 35 36inline SVGFEComponentTransferElement::SVGFEComponentTransferElement(Document& document) 37 : SVGFilterPrimitiveStandardAttributes(SVGNames::feComponentTransferTag, document) 38 , m_in1(SVGAnimatedString::create(this, SVGNames::inAttr, SVGString::create())) 39{ 40 addToPropertyMap(m_in1); 41} 42 43DEFINE_NODE_FACTORY(SVGFEComponentTransferElement) 44 45bool SVGFEComponentTransferElement::isSupportedAttribute(const QualifiedName& attrName) 46{ 47 DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ()); 48 if (supportedAttributes.isEmpty()) 49 supportedAttributes.add(SVGNames::inAttr); 50 return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName); 51} 52 53void SVGFEComponentTransferElement::parseAttribute(const QualifiedName& name, const AtomicString& value) 54{ 55 if (!isSupportedAttribute(name)) { 56 SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value); 57 return; 58 } 59 60 SVGParsingError parseError = NoError; 61 62 if (name == SVGNames::inAttr) 63 m_in1->setBaseValueAsString(value, parseError); 64 else 65 ASSERT_NOT_REACHED(); 66 67 reportAttributeParsingError(parseError, name, value); 68} 69 70PassRefPtr<FilterEffect> SVGFEComponentTransferElement::build(SVGFilterBuilder* filterBuilder, Filter* filter) 71{ 72 FilterEffect* input1 = filterBuilder->getEffectById(AtomicString(m_in1->currentValue()->value())); 73 74 if (!input1) 75 return nullptr; 76 77 ComponentTransferFunction red; 78 ComponentTransferFunction green; 79 ComponentTransferFunction blue; 80 ComponentTransferFunction alpha; 81 82 for (SVGElement* element = Traversal<SVGElement>::firstChild(*this); element; element = Traversal<SVGElement>::nextSibling(*element)) { 83 if (isSVGFEFuncRElement(*element)) 84 red = toSVGFEFuncRElement(*element).transferFunction(); 85 else if (isSVGFEFuncGElement(*element)) 86 green = toSVGFEFuncGElement(*element).transferFunction(); 87 else if (isSVGFEFuncBElement(*element)) 88 blue = toSVGFEFuncBElement(*element).transferFunction(); 89 else if (isSVGFEFuncAElement(*element)) 90 alpha = toSVGFEFuncAElement(*element).transferFunction(); 91 } 92 93 RefPtr<FilterEffect> effect = FEComponentTransfer::create(filter, red, green, blue, alpha); 94 effect->inputEffects().append(input1); 95 return effect.release(); 96} 97 98} 99