#include "config.h"
#if ENABLE(SVG) && ENABLE(FILTERS)
#include "SVGFilter.h"
namespace WebCore {
SVGFilter::SVGFilter(const FloatRect& itemBox, const FloatRect& filterRect, bool effectBBoxMode)
: Filter()
, m_itemBox(itemBox)
, m_filterRect(filterRect)
, m_effectBBoxMode(effectBBoxMode)
{
}
void SVGFilter::calculateEffectSubRegion(FilterEffect* effect)
{
FloatRect subRegionBBox = effect->effectBoundaries();
FloatRect useBBox = effect->unionOfChildEffectSubregions();
FloatRect newSubRegion = subRegionBBox;
if (m_effectBBoxMode) {
newSubRegion = useBBox;
if (effect->hasX())
newSubRegion.setX(m_itemBox.x() + subRegionBBox.x() * m_itemBox.width());
if (effect->hasY())
newSubRegion.setY(m_itemBox.y() + subRegionBBox.y() * m_itemBox.height());
if (effect->hasWidth())
newSubRegion.setWidth(subRegionBBox.width() * m_itemBox.width());
if (effect->hasHeight())
newSubRegion.setHeight(subRegionBBox.height() * m_itemBox.height());
} else {
if (!effect->hasX())
newSubRegion.setX(useBBox.x());
if (!effect->hasY())
newSubRegion.setY(useBBox.y());
if (!effect->hasWidth())
newSubRegion.setWidth(useBBox.width());
if (!effect->hasHeight())
newSubRegion.setHeight(useBBox.height());
}
newSubRegion.intersect(m_filterRect);
effect->setSubRegion(newSubRegion);
newSubRegion.scale(filterResolution().width(), filterResolution().height());
effect->setScaledSubRegion(newSubRegion);
m_maxImageSize = m_maxImageSize.expandedTo(newSubRegion.size());
}
PassRefPtr<SVGFilter> SVGFilter::create(const FloatRect& itemBox, const FloatRect& filterRect, bool effectBBoxMode)
{
return adoptRef(new SVGFilter(itemBox, filterRect, effectBBoxMode));
}
}
#endif // ENABLE(SVG) && ENABLE(FILTERS)