#include "config.h"
#if ENABLE(FILTERS)
#include "SourceAlpha.h"
#include "Color.h"
#include "Filter.h"
#include "GraphicsContext.h"
#include "PlatformString.h"
#include "RenderTreeAsText.h"
#include "TextStream.h"
#include <wtf/StdLibExtras.h>
namespace WebCore {
PassRefPtr<SourceAlpha> SourceAlpha::create(Filter* filter)
{
return adoptRef(new SourceAlpha(filter));
}
const AtomicString& SourceAlpha::effectName()
{
DEFINE_STATIC_LOCAL(const AtomicString, s_effectName, ("SourceAlpha"));
return s_effectName;
}
void SourceAlpha::determineAbsolutePaintRect()
{
Filter* filter = this->filter();
FloatRect paintRect = filter->sourceImageRect();
paintRect.scale(filter->filterResolution().width(), filter->filterResolution().height());
setAbsolutePaintRect(enclosingIntRect(paintRect));
}
void SourceAlpha::platformApplySoftware()
{
ImageBuffer* resultImage = createImageBufferResult();
Filter* filter = this->filter();
if (!resultImage || !filter->sourceImage())
return;
setIsAlphaImage(true);
FloatRect imageRect(FloatPoint(), absolutePaintRect().size());
GraphicsContext* filterContext = resultImage->context();
filterContext->fillRect(imageRect, Color::black, ColorSpaceDeviceRGB);
filterContext->drawImageBuffer(filter->sourceImage(), ColorSpaceDeviceRGB, IntPoint(), CompositeDestinationIn);
}
void SourceAlpha::dump()
{
}
TextStream& SourceAlpha::externalRepresentation(TextStream& ts, int indent) const
{
writeIndent(ts, indent);
ts << "[SourceAlpha]\n";
return ts;
}
}
#endif // ENABLE(FILTERS)