FEDisplacementMap.h [plain text]
#pragma once
#include "FilterEffect.h"
#include "Filter.h"
#include <wtf/text/WTFString.h>
namespace WebCore {
enum ChannelSelectorType {
CHANNEL_UNKNOWN = 0,
CHANNEL_R = 1,
CHANNEL_G = 2,
CHANNEL_B = 3,
CHANNEL_A = 4
};
class FEDisplacementMap : public FilterEffect {
public:
static Ref<FEDisplacementMap> create(Filter&, ChannelSelectorType xChannelSelector, ChannelSelectorType yChannelSelector, float scale);
ChannelSelectorType xChannelSelector() const { return m_xChannelSelector; }
bool setXChannelSelector(const ChannelSelectorType);
ChannelSelectorType yChannelSelector() const { return m_yChannelSelector; }
bool setYChannelSelector(const ChannelSelectorType);
float scale() const { return m_scale; }
bool setScale(float);
void setResultColorSpace(ColorSpace) override;
void transformResultColorSpace(FilterEffect*, const int) override;
private:
FEDisplacementMap(Filter&, ChannelSelectorType xChannelSelector, ChannelSelectorType yChannelSelector, float);
const char* filterName() const final { return "FEDisplacementMap"; }
void platformApplySoftware() override;
void determineAbsolutePaintRect() override { setAbsolutePaintRect(enclosingIntRect(maxEffectRect())); }
int xChannelIndex() const { return m_xChannelSelector - 1; }
int yChannelIndex() const { return m_yChannelSelector - 1; }
WTF::TextStream& externalRepresentation(WTF::TextStream&, RepresentationType) const override;
ChannelSelectorType m_xChannelSelector;
ChannelSelectorType m_yChannelSelector;
float m_scale;
};
}