#include "config.h"
#if ENABLE(FILTERS)
#include "FEMerge.h"
#include "Filter.h"
#include "GraphicsContext.h"
#include "RenderTreeAsText.h"
#include "TextStream.h"
namespace WebCore {
FEMerge::FEMerge(Filter* filter)
: FilterEffect(filter)
{
}
PassRefPtr<FEMerge> FEMerge::create(Filter* filter)
{
return adoptRef(new FEMerge(filter));
}
void FEMerge::apply()
{
if (hasResult())
return;
unsigned size = numberOfEffectInputs();
ASSERT(size > 0);
for (unsigned i = 0; i < size; ++i) {
FilterEffect* in = inputEffect(i);
in->apply();
if (!in->hasResult())
return;
}
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
GraphicsContext* filterContext = resultImage->context();
for (unsigned i = 0; i < size; ++i) {
FilterEffect* in = inputEffect(i);
filterContext->drawImageBuffer(in->asImageBuffer(), ColorSpaceDeviceRGB, drawingRegionOfInputImage(in->absolutePaintRect()));
}
}
void FEMerge::dump()
{
}
TextStream& FEMerge::externalRepresentation(TextStream& ts, int indent) const
{
writeIndent(ts, indent);
ts << "[feMerge";
FilterEffect::externalRepresentation(ts);
unsigned size = numberOfEffectInputs();
ASSERT(size > 0);
ts << " mergeNodes=\"" << size << "\"]\n";
for (unsigned i = 0; i < size; ++i)
inputEffect(i)->externalRepresentation(ts, indent + 1);
return ts;
}
}
#endif // ENABLE(FILTERS)