2 * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
21 #include "core/svg/graphics/filters/SVGFilterBuilder.h"
23 #include "platform/graphics/filters/SourceAlpha.h"
24 #include "platform/graphics/filters/SourceGraphic.h"
28 SVGFilterBuilder::SVGFilterBuilder(PassRefPtr<FilterEffect> sourceGraphic, PassRefPtr<FilterEffect> sourceAlpha)
30 m_builtinEffects.add(SourceGraphic::effectName(), sourceGraphic);
31 m_builtinEffects.add(SourceAlpha::effectName(), sourceAlpha);
35 void SVGFilterBuilder::add(const AtomicString& id, PassRefPtr<FilterEffect> effect)
38 m_lastEffect = effect;
42 if (m_builtinEffects.contains(id))
45 m_lastEffect = effect;
46 m_namedEffects.set(id, m_lastEffect);
49 FilterEffect* SVGFilterBuilder::getEffectById(const AtomicString& id) const
52 if (FilterEffect* builtinEffect = m_builtinEffects.get(id))
55 if (FilterEffect* namedEffect = m_namedEffects.get(id))
60 return m_lastEffect.get();
62 return m_builtinEffects.get(SourceGraphic::effectName());
65 void SVGFilterBuilder::appendEffectToEffectReferences(PassRefPtr<FilterEffect> prpEffect, RenderObject* object)
67 RefPtr<FilterEffect> effect = prpEffect;
69 // The effect must be a newly created filter effect.
70 ASSERT(!m_effectReferences.contains(effect));
71 ASSERT(object && !m_effectRenderer.contains(object));
72 m_effectReferences.add(effect, FilterEffectSet());
74 unsigned numberOfInputEffects = effect->inputEffects().size();
76 // It is not possible to add the same value to a set twice.
77 for (unsigned i = 0; i < numberOfInputEffects; ++i)
78 effectReferences(effect->inputEffect(i)).add(effect.get());
79 m_effectRenderer.add(object, effect.get());
82 void SVGFilterBuilder::clearEffects()
84 m_lastEffect = nullptr;
85 m_namedEffects.clear();
86 m_effectReferences.clear();
87 m_effectRenderer.clear();
91 void SVGFilterBuilder::clearResultsRecursive(FilterEffect* effect)
93 if (!effect->hasResult() && !effect->hasImageFilter())
96 effect->clearResult();
98 HashSet<FilterEffect*>& effectReferences = this->effectReferences(effect);
99 HashSet<FilterEffect*>::iterator end = effectReferences.end();
100 for (HashSet<FilterEffect*>::iterator it = effectReferences.begin(); it != end; ++it)
101 clearResultsRecursive(*it);