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/*
* Copyright (C) 2008 Alex Mathews <possessedpenguinbob@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef SVGFilterBuilder_h
#define SVGFilterBuilder_h
#include "config.h"
#if ENABLE(SVG) && ENABLE(FILTERS)
#include "FilterEffect.h"
#include "PlatformString.h"
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/PassRefPtr.h>
#include <wtf/text/AtomicStringHash.h>
namespace WebCore {
class SVGFilterBuilder : public RefCounted<SVGFilterBuilder> {
public:
typedef HashSet<FilterEffect*> FilterEffectSet;
static PassRefPtr<SVGFilterBuilder> create() { return adoptRef(new SVGFilterBuilder); }
void add(const AtomicString& id, RefPtr<FilterEffect> effect);
FilterEffect* getEffectById(const AtomicString& id) const;
FilterEffect* lastEffect() const { return m_lastEffect.get(); }
void appendEffectToEffectReferences(RefPtr<FilterEffect>);
inline FilterEffectSet& getEffectReferences(FilterEffect* effect)
{
// Only allowed for effects belongs to this builder.
ASSERT(m_effectReferences.contains(effect));
return m_effectReferences.find(effect)->second;
}
void clearEffects();
private:
SVGFilterBuilder();
inline void addBuiltinEffects()
{
HashMap<AtomicString, RefPtr<FilterEffect> >::iterator end = m_builtinEffects.end();
for (HashMap<AtomicString, RefPtr<FilterEffect> >::iterator iterator = m_builtinEffects.begin(); iterator != end; ++iterator)
m_effectReferences.add(iterator->second, FilterEffectSet());
}
HashMap<AtomicString, RefPtr<FilterEffect> > m_builtinEffects;
HashMap<AtomicString, RefPtr<FilterEffect> > m_namedEffects;
// The value is a list, which contains those filter effects,
// which depends on the key filter effect.
HashMap<RefPtr<FilterEffect>, FilterEffectSet> m_effectReferences;
RefPtr<FilterEffect> m_lastEffect;
};
} //namespace WebCore
#endif // ENABLE(SVG) && ENABLE(FILTERS)
#endif
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