CrossfadeGeneratedImage.h [plain text]
#ifndef CrossfadeGeneratedImage_h
#define CrossfadeGeneratedImage_h
#include "FloatSize.h"
#include "GeneratedImage.h"
#include "Image.h"
#include "ImageObserver.h"
#include <wtf/RefPtr.h>
namespace WebCore {
class CrossfadeGeneratedImage final : public GeneratedImage {
public:
static Ref<CrossfadeGeneratedImage> create(Image& fromImage, Image& toImage, float percentage, const FloatSize& crossfadeSize, const FloatSize& size)
{
return adoptRef(*new CrossfadeGeneratedImage(fromImage, toImage, percentage, crossfadeSize, size));
}
void setContainerSize(const FloatSize&) override { }
bool usesContainerSize() const override { return false; }
bool hasRelativeWidth() const override { return false; }
bool hasRelativeHeight() const override { return false; }
FloatSize size() const override { return m_crossfadeSize; }
protected:
void draw(GraphicsContext&, const FloatRect& dstRect, const FloatRect& srcRect, CompositeOperator, BlendMode, ImageOrientationDescription) override;
void drawPattern(GraphicsContext&, const FloatRect& srcRect, const AffineTransform& patternTransform, const FloatPoint& phase, const FloatSize& spacing, CompositeOperator, const FloatRect& dstRect, BlendMode) override;
CrossfadeGeneratedImage(Image& fromImage, Image& toImage, float percentage, const FloatSize& crossfadeSize, const FloatSize&);
private:
bool isCrossfadeGeneratedImage() const override { return true; }
void dump(TextStream&) const override;
void drawCrossfade(GraphicsContext&);
Ref<Image> m_fromImage;
Ref<Image> m_toImage;
float m_percentage;
FloatSize m_crossfadeSize;
};
}
#endif