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* Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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#if ENABLE(SVG) && ENABLE(FILTERS)
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#include "SVGFilterBuilder.h"
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#include "FilterEffect.h"
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#include "SourceAlpha.h"
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#include "SourceGraphic.h"
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#include <wtf/PassRefPtr.h>
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#include <wtf/text/WTFString.h>
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SVGFilterBuilder::SVGFilterBuilder(PassRefPtr<FilterEffect> sourceGraphic, PassRefPtr<FilterEffect> sourceAlpha)
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m_builtinEffects.add(SourceGraphic::effectName(), sourceGraphic);
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m_builtinEffects.add(SourceAlpha::effectName(), sourceAlpha);
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void SVGFilterBuilder::add(const AtomicString& id, PassRefPtr<FilterEffect> effect)
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m_lastEffect = effect;
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if (m_builtinEffects.contains(id))
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m_lastEffect = effect;
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m_namedEffects.set(id, m_lastEffect);
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FilterEffect* SVGFilterBuilder::getEffectById(const AtomicString& id) const
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return m_lastEffect.get();
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return m_builtinEffects.get(SourceGraphic::effectName()).get();
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if (m_builtinEffects.contains(id))
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return m_builtinEffects.get(id).get();
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return m_namedEffects.get(id).get();
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void SVGFilterBuilder::appendEffectToEffectReferences(PassRefPtr<FilterEffect> prpEffect, RenderObject* object)
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RefPtr<FilterEffect> effect = prpEffect;
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// The effect must be a newly created filter effect.
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ASSERT(!m_effectReferences.contains(effect));
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ASSERT(object && !m_effectRenderer.contains(object));
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m_effectReferences.add(effect, FilterEffectSet());
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unsigned numberOfInputEffects = effect->inputEffects().size();
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// It is not possible to add the same value to a set twice.
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for (unsigned i = 0; i < numberOfInputEffects; ++i)
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effectReferences(effect->inputEffect(i)).add(effect.get());
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m_effectRenderer.add(object, effect.get());
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void SVGFilterBuilder::clearEffects()
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m_namedEffects.clear();
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m_effectReferences.clear();
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m_effectRenderer.clear();
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void SVGFilterBuilder::clearResultsRecursive(FilterEffect* effect)
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if (!effect->hasResult())
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effect->clearResult();
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HashSet<FilterEffect*>& effectReferences = this->effectReferences(effect);
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HashSet<FilterEffect*>::iterator end = effectReferences.end();
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for (HashSet<FilterEffect*>::iterator it = effectReferences.begin(); it != end; ++it)
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clearResultsRecursive(*it);
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} // namespace WebCore
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#endif // ENABLE(SVG) && ENABLE(FILTERS)