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/SVGFEGaussianBlurElement.h" 24 25#include "core/SVGNames.h" 26#include "platform/graphics/filters/FilterEffect.h" 27#include "core/svg/SVGParserUtilities.h" 28#include "core/svg/graphics/filters/SVGFilterBuilder.h" 29 30namespace blink { 31 32inline SVGFEGaussianBlurElement::SVGFEGaussianBlurElement(Document& document) 33 : SVGFilterPrimitiveStandardAttributes(SVGNames::feGaussianBlurTag, document) 34 , m_stdDeviation(SVGAnimatedNumberOptionalNumber::create(this, SVGNames::stdDeviationAttr, 0, 0)) 35 , m_in1(SVGAnimatedString::create(this, SVGNames::inAttr, SVGString::create())) 36{ 37 addToPropertyMap(m_stdDeviation); 38 addToPropertyMap(m_in1); 39} 40 41DEFINE_NODE_FACTORY(SVGFEGaussianBlurElement) 42 43void SVGFEGaussianBlurElement::setStdDeviation(float x, float y) 44{ 45 stdDeviationX()->baseValue()->setValue(x); 46 stdDeviationY()->baseValue()->setValue(y); 47 invalidate(); 48} 49 50bool SVGFEGaussianBlurElement::isSupportedAttribute(const QualifiedName& attrName) 51{ 52 DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ()); 53 if (supportedAttributes.isEmpty()) { 54 supportedAttributes.add(SVGNames::inAttr); 55 supportedAttributes.add(SVGNames::stdDeviationAttr); 56 } 57 return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName); 58} 59 60void SVGFEGaussianBlurElement::parseAttribute(const QualifiedName& name, const AtomicString& value) 61{ 62 parseAttributeNew(name, value); 63} 64 65void SVGFEGaussianBlurElement::svgAttributeChanged(const QualifiedName& attrName) 66{ 67 if (!isSupportedAttribute(attrName)) { 68 SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName); 69 return; 70 } 71 72 SVGElement::InvalidationGuard invalidationGuard(this); 73 74 if (attrName == SVGNames::inAttr || attrName == SVGNames::stdDeviationAttr) { 75 invalidate(); 76 return; 77 } 78 79 ASSERT_NOT_REACHED(); 80} 81 82PassRefPtr<FilterEffect> SVGFEGaussianBlurElement::build(SVGFilterBuilder* filterBuilder, Filter* filter) 83{ 84 FilterEffect* input1 = filterBuilder->getEffectById(AtomicString(m_in1->currentValue()->value())); 85 86 if (!input1) 87 return nullptr; 88 89 if (stdDeviationX()->currentValue()->value() < 0 || stdDeviationY()->currentValue()->value() < 0) 90 return nullptr; 91 92 RefPtr<FilterEffect> effect = FEGaussianBlur::create(filter, stdDeviationX()->currentValue()->value(), stdDeviationY()->currentValue()->value()); 93 effect->inputEffects().append(input1); 94 return effect.release(); 95} 96 97} // namespace blink 98