#include "config.h"
#include "SourceAlpha.h"
#include "Color.h"
#include "Filter.h"
#include "GraphicsContext.h"
#include <wtf/NeverDestroyed.h>
#include <wtf/StdLibExtras.h>
#include <wtf/text/TextStream.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
Ref<SourceAlpha> SourceAlpha::create(FilterEffect& sourceEffect)
{
return adoptRef(*new SourceAlpha(sourceEffect));
}
const AtomString& SourceAlpha::effectName()
{
static NeverDestroyed<const AtomString> s_effectName("SourceAlpha", AtomString::ConstructFromLiteral);
return s_effectName;
}
void SourceAlpha::determineAbsolutePaintRect()
{
inputEffect(0)->determineAbsolutePaintRect();
setAbsolutePaintRect(inputEffect(0)->absolutePaintRect());
}
void SourceAlpha::platformApplySoftware()
{
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
GraphicsContext& filterContext = resultImage->context();
ImageBuffer* imageBuffer = inputEffect(0)->imageBufferResult();
if (!imageBuffer)
return;
FloatRect imageRect(FloatPoint(), absolutePaintRect().size());
filterContext.fillRect(imageRect, Color::black);
filterContext.drawImageBuffer(*imageBuffer, IntPoint(), CompositeOperator::DestinationIn);
}
TextStream& SourceAlpha::externalRepresentation(TextStream& ts, RepresentationType) const
{
ts << indent << "[SourceAlpha]\n";
return ts;
}
SourceAlpha::SourceAlpha(FilterEffect& sourceEffect)
: FilterEffect(sourceEffect.filter())
{
setOperatingColorSpace(sourceEffect.operatingColorSpace());
inputEffects().append(&sourceEffect);
}
}