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/*
Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
2004, 2005 Rob Buis <buis@kde.org>
2005 Eric Seidel <eric@webkit.org>
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
aint 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.
*/
#include "config.h"
#if ENABLE(SVG) && ENABLE(FILTERS)
#include "SVGFEMerge.h"
#include "Filter.h"
#include "GraphicsContext.h"
#include "SVGRenderTreeAsText.h"
namespace WebCore {
FEMerge::FEMerge(const Vector<RefPtr<FilterEffect> >& mergeInputs)
: FilterEffect()
, m_mergeInputs(mergeInputs)
{
}
PassRefPtr<FEMerge> FEMerge::create(const Vector<RefPtr<FilterEffect> >& mergeInputs)
{
return adoptRef(new FEMerge(mergeInputs));
}
const Vector<RefPtr<FilterEffect> >& FEMerge::mergeInputs() const
{
return m_mergeInputs;
}
void FEMerge::setMergeInputs(const Vector<RefPtr<FilterEffect> >& mergeInputs)
{
m_mergeInputs = mergeInputs;
}
FloatRect FEMerge::uniteChildEffectSubregions(Filter* filter)
{
ASSERT(!m_mergeInputs.isEmpty());
FloatRect uniteEffectRect = m_mergeInputs[0]->calculateEffectRect(filter);
for (unsigned i = 1; i < m_mergeInputs.size(); i++)
uniteEffectRect.unite(m_mergeInputs[i]->calculateEffectRect(filter));
return uniteEffectRect;
}
void FEMerge::apply(Filter* filter)
{
ASSERT(!m_mergeInputs.isEmpty());
for (unsigned i = 0; i < m_mergeInputs.size(); i++) {
m_mergeInputs[i]->apply(filter);
if (!m_mergeInputs[i]->resultImage())
return;
}
GraphicsContext* filterContext = getEffectContext();
if (!filterContext)
return;
for (unsigned i = 0; i < m_mergeInputs.size(); i++) {
FloatRect destRect = calculateDrawingRect(m_mergeInputs[i]->scaledSubRegion());
filterContext->drawImage(m_mergeInputs[i]->resultImage()->image(), DeviceColorSpace, destRect);
}
}
void FEMerge::dump()
{
}
TextStream& FEMerge::externalRepresentation(TextStream& ts, int indent) const
{
writeIndent(ts, indent);
ts << "[feMerge";
FilterEffect::externalRepresentation(ts);
ts << " mergeNodes=\"" << m_mergeInputs.size() << "\"]\n";
if (!m_mergeInputs.isEmpty()) {
const Vector<RefPtr<FilterEffect> >::const_iterator end = m_mergeInputs.end();
for (Vector<RefPtr<FilterEffect> >::const_iterator it = m_mergeInputs.begin(); it != end; ++it)
(*it)->externalRepresentation(ts, indent + 1);
}
return ts;
}
} // namespace WebCore
#endif // ENABLE(SVG) && ENABLE(FILTERS)
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