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#ifndef SkBlurDrawLooper_DEFINED
#define SkBlurDrawLooper_DEFINED
#include "SkDrawLooper.h"
#include "SkColor.h"
class SkMaskFilter;
/** \class SkBlurDrawLooper
This class draws a shadow of the object (possibly offset), and then draws
the original object in its original position.
<reed> should there be an option to just draw the shadow/blur layer? webkit?
*/
class SkBlurDrawLooper : public SkDrawLooper {
public:
SkBlurDrawLooper(SkScalar radius, SkScalar dx, SkScalar dy, SkColor color);
virtual ~SkBlurDrawLooper();
// overrides from SkDrawLooper
virtual void init(SkCanvas*, SkPaint*);
virtual bool next();
virtual void restore();
protected:
SkBlurDrawLooper(SkFlattenableReadBuffer&);
// overrides from SkFlattenable
virtual void flatten(SkFlattenableWriteBuffer& );
virtual Factory getFactory() { return CreateProc; }
private:
static SkFlattenable* CreateProc(SkFlattenableReadBuffer& buffer) {
return SkNEW_ARGS(SkBlurDrawLooper, (buffer)); }
SkCanvas* fCanvas;
SkPaint* fPaint;
SkMaskFilter* fBlur;
SkScalar fDx, fDy;
SkColor fBlurColor;
SkColor fSavedColor; // remember the original
int fSaveCount;
enum State {
kBeforeEdge,
kAfterEdge,
kDone
};
State fState;
typedef SkDrawLooper INHERITED;
};
#endif
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