1 /* 2 * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann (at) kde.org> 3 * Copyright (C) 2004, 2005, 2006 Rob Buis <buis (at) 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/SVGFEMergeElement.h" 24 25 #include "core/SVGNames.h" 26 #include "platform/graphics/filters/FilterEffect.h" 27 #include "core/svg/SVGFEMergeNodeElement.h" 28 #include "core/svg/graphics/filters/SVGFilterBuilder.h" 29 30 namespace WebCore { 31 32 inline SVGFEMergeElement::SVGFEMergeElement(Document& document) 33 : SVGFilterPrimitiveStandardAttributes(SVGNames::feMergeTag, document) 34 { 35 ScriptWrappable::init(this); 36 } 37 38 DEFINE_NODE_FACTORY(SVGFEMergeElement) 39 40 PassRefPtr<FilterEffect> SVGFEMergeElement::build(SVGFilterBuilder* filterBuilder, Filter* filter) 41 { 42 RefPtr<FilterEffect> effect = FEMerge::create(filter); 43 FilterEffectVector& mergeInputs = effect->inputEffects(); 44 for (SVGFEMergeNodeElement* element = Traversal<SVGFEMergeNodeElement>::firstChild(*this); element; element = Traversal<SVGFEMergeNodeElement>::nextSibling(*element)) { 45 FilterEffect* mergeEffect = filterBuilder->getEffectById(AtomicString(element->in1()->currentValue()->value())); 46 if (!mergeEffect) 47 return nullptr; 48 mergeInputs.append(mergeEffect); 49 } 50 51 if (mergeInputs.isEmpty()) 52 return nullptr; 53 54 return effect.release(); 55 } 56 57 } 58
