#include "config.h"
#if ENABLE(FILTERS)
#include "FilterEffect.h"
namespace WebCore {
FilterEffect::FilterEffect()
: m_xBBoxMode(false)
, m_yBBoxMode(false)
, m_widthBBoxMode(false)
, m_heightBBoxMode(false)
, m_hasX(false)
, m_hasY(false)
, m_hasWidth(false)
, m_hasHeight(false)
{
}
FilterEffect::~FilterEffect()
{
}
FloatRect FilterEffect::calculateUnionOfChildEffectSubregions(Filter* filter, FilterEffect* in)
{
return in->calculateEffectRect(filter);
}
FloatRect FilterEffect::calculateUnionOfChildEffectSubregions(Filter* filter, FilterEffect* in, FilterEffect* in2)
{
FloatRect uniteEffectRect = in->calculateEffectRect(filter);
uniteEffectRect.unite(in2->calculateEffectRect(filter));
return uniteEffectRect;
}
FloatRect FilterEffect::calculateEffectRect(Filter* filter)
{
setUnionOfChildEffectSubregions(uniteChildEffectSubregions(filter));
filter->calculateEffectSubRegion(this);
return subRegion();
}
FloatRect FilterEffect::calculateDrawingRect(const FloatRect& srcRect)
{
FloatPoint startPoint = FloatPoint(srcRect.x() - subRegion().x(), srcRect.y() - subRegion().y());
FloatRect drawingRect = FloatRect(startPoint, srcRect.size());
return drawingRect;
}
GraphicsContext* FilterEffect::getEffectContext()
{
IntRect bufferRect = enclosingIntRect(subRegion());
m_effectBuffer = ImageBuffer::create(bufferRect.size(), false);
return m_effectBuffer->context();
}
TextStream& FilterEffect::externalRepresentation(TextStream& ts) const
{
return ts;
}
}
#endif // ENABLE(FILTERS)