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#if ENABLE(SVG) && ENABLE(FILTERS) 24#include "SVGFEMergeElement.h" 25 26#include "FilterEffect.h" 27#include "SVGFEMergeNodeElement.h" 28#include "SVGFilterBuilder.h" 29#include "SVGNames.h" 30 31namespace WebCore { 32 33inline SVGFEMergeElement::SVGFEMergeElement(const QualifiedName& tagName, Document* document) 34 : SVGFilterPrimitiveStandardAttributes(tagName, document) 35{ 36 ASSERT(hasTagName(SVGNames::feMergeTag)); 37} 38 39PassRefPtr<SVGFEMergeElement> SVGFEMergeElement::create(const QualifiedName& tagName, Document* document) 40{ 41 return adoptRef(new SVGFEMergeElement(tagName, document)); 42} 43 44PassRefPtr<FilterEffect> SVGFEMergeElement::build(SVGFilterBuilder* filterBuilder, Filter* filter) 45{ 46 RefPtr<FilterEffect> effect = FEMerge::create(filter); 47 FilterEffectVector& mergeInputs = effect->inputEffects(); 48 for (Node* node = firstChild(); node; node = node->nextSibling()) { 49 if (node->hasTagName(SVGNames::feMergeNodeTag)) { 50 FilterEffect* mergeEffect = filterBuilder->getEffectById(static_cast<SVGFEMergeNodeElement*>(node)->in1()); 51 if (!mergeEffect) 52 return 0; 53 mergeInputs.append(mergeEffect); 54 } 55 } 56 57 if (mergeInputs.isEmpty()) 58 return 0; 59 60 return effect.release(); 61} 62 63} 64 65#endif // ENABLE(SVG) 66