/* | |
* Copyright (C) 2009 Dirk Schulze <krit@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 "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()); | |
} | |
// clip every filter effect to the filter region | |
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)); | |
} | |
} // namespace WebCore | |
#endif // ENABLE(SVG) && ENABLE(FILTERS) |