This source file includes following definitions.
- m_dy
- create
- dx
- setDx
- dy
- setDy
- mapRect
- applySoftware
- createImageFilter
- externalRepresentation
#include "config.h"
#include "platform/graphics/filters/FEOffset.h"
#include "SkFlattenableBuffers.h"
#include "SkOffsetImageFilter.h"
#include "platform/graphics/GraphicsContext.h"
#include "platform/graphics/filters/SkiaImageFilterBuilder.h"
#include "platform/text/TextStream.h"
#include "third_party/skia/include/core/SkDevice.h"
namespace WebCore {
FEOffset::FEOffset(Filter* filter, float dx, float dy)
: FilterEffect(filter)
, m_dx(dx)
, m_dy(dy)
{
}
PassRefPtr<FEOffset> FEOffset::create(Filter* filter, float dx, float dy)
{
return adoptRef(new FEOffset(filter, dx, dy));
}
float FEOffset::dx() const
{
return m_dx;
}
void FEOffset::setDx(float dx)
{
m_dx = dx;
}
float FEOffset::dy() const
{
return m_dy;
}
void FEOffset::setDy(float dy)
{
m_dy = dy;
}
FloatRect FEOffset::mapRect(const FloatRect& rect, bool forward)
{
FloatRect result = rect;
if (forward)
result.move(filter()->applyHorizontalScale(m_dx), filter()->applyHorizontalScale(m_dy));
else
result.move(-filter()->applyHorizontalScale(m_dx), -filter()->applyHorizontalScale(m_dy));
return result;
}
void FEOffset::applySoftware()
{
FilterEffect* in = inputEffect(0);
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
setIsAlphaImage(in->isAlphaImage());
FloatRect drawingRegion = drawingRegionOfInputImage(in->absolutePaintRect());
Filter* filter = this->filter();
drawingRegion.move(filter->applyHorizontalScale(m_dx), filter->applyVerticalScale(m_dy));
resultImage->context()->drawImageBuffer(in->asImageBuffer(), drawingRegion);
}
PassRefPtr<SkImageFilter> FEOffset::createImageFilter(SkiaImageFilterBuilder* builder)
{
RefPtr<SkImageFilter> input(builder->build(inputEffect(0), operatingColorSpace()));
Filter* filter = this->filter();
SkImageFilter::CropRect cropRect = getCropRect(builder->cropOffset());
return adoptRef(new SkOffsetImageFilter(SkFloatToScalar(filter->applyHorizontalScale(m_dx)), SkFloatToScalar(filter->applyVerticalScale(m_dy)), input.get(), &cropRect));
}
TextStream& FEOffset::externalRepresentation(TextStream& ts, int indent) const
{
writeIndent(ts, indent);
ts << "[feOffset";
FilterEffect::externalRepresentation(ts);
ts << " dx=\"" << dx() << "\" dy=\"" << dy() << "\"]\n";
inputEffect(0)->externalRepresentation(ts, indent + 1);
return ts;
}
}