#include "config.h"
#if ENABLE(SVG) && ENABLE(FILTERS)
#include "SVGFilter.h"
namespace WebCore {
SVGFilter::SVGFilter(const FloatRect& itemBox, const FloatRect& filterRect, bool effectBBoxMode, bool filterBBoxMode)
: Filter()
, m_itemBox(itemBox)
, m_filterRect(filterRect)
, m_effectBBoxMode(effectBBoxMode)
, m_filterBBoxMode(filterBBoxMode)
{
}
void SVGFilter::calculateEffectSubRegion(FilterEffect* effect)
{
FloatRect subRegionBBox = effect->subRegion();
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->xBoundingBoxMode())
newSubRegion.setX(useBBox.x() + subRegionBBox.x() * useBBox.width());
if (effect->yBoundingBoxMode())
newSubRegion.setY(useBBox.y() + subRegionBBox.y() * useBBox.height());
if (effect->widthBoundingBoxMode())
newSubRegion.setWidth(subRegionBBox.width() * useBBox.width());
if (effect->heightBoundingBoxMode())
newSubRegion.setHeight(subRegionBBox.height() * useBBox.height());
}
newSubRegion.intersect(m_filterRect);
effect->setSubRegion(newSubRegion);
}
PassRefPtr<SVGFilter> SVGFilter::create(const FloatRect& itemBox, const FloatRect& filterRect, bool effectBBoxMode, bool filterBBoxMode)
{
return adoptRef(new SVGFilter(itemBox, filterRect, effectBBoxMode, filterBBoxMode));
}
}
#endif // ENABLE(SVG) && ENABLE(FILTERS)