SVGFilterBuilder.cpp [plain text]
#include "config.h"
#include "SVGFilterBuilder.h"
#include "FilterEffect.h"
#include "SourceAlpha.h"
#include "SourceGraphic.h"
namespace WebCore {
SVGFilterBuilder::SVGFilterBuilder(RefPtr<FilterEffect> sourceGraphic)
{
m_builtinEffects.add(SourceGraphic::effectName(), sourceGraphic);
m_builtinEffects.add(SourceAlpha::effectName(), SourceAlpha::create(*sourceGraphic));
addBuiltinEffects();
}
void SVGFilterBuilder::add(const AtomicString& id, RefPtr<FilterEffect> effect)
{
if (id.isEmpty()) {
m_lastEffect = effect;
return;
}
if (m_builtinEffects.contains(id))
return;
m_lastEffect = effect;
m_namedEffects.set(id, m_lastEffect);
}
FilterEffect* SVGFilterBuilder::getEffectById(const AtomicString& id) const
{
if (id.isEmpty()) {
if (m_lastEffect)
return m_lastEffect.get();
return m_builtinEffects.get(SourceGraphic::effectName());
}
if (m_builtinEffects.contains(id))
return m_builtinEffects.get(id);
return m_namedEffects.get(id);
}
void SVGFilterBuilder::appendEffectToEffectReferences(RefPtr<FilterEffect>&& effect, RenderObject* object)
{
ASSERT(!m_effectReferences.contains(effect));
ASSERT(!object || !m_effectRenderer.contains(object));
m_effectReferences.add(effect, FilterEffectSet());
unsigned numberOfInputEffects = effect->inputEffects().size();
for (unsigned i = 0; i < numberOfInputEffects; ++i)
effectReferences(effect->inputEffect(i)).add(effect.get());
if (object)
m_effectRenderer.add(object, effect.get());
}
void SVGFilterBuilder::clearEffects()
{
m_lastEffect = nullptr;
m_namedEffects.clear();
m_effectReferences.clear();
m_effectRenderer.clear();
addBuiltinEffects();
}
void SVGFilterBuilder::clearResultsRecursive(FilterEffect* effect)
{
if (!effect->hasResult())
return;
effect->clearResult();
for (auto& reference : effectReferences(effect))
clearResultsRecursive(reference);
}
}