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#ifndef SkLayerDrawLooper_DEFINED
#define SkLayerDrawLooper_DEFINED
#include "SkDrawLooper.h"
struct SkPoint;
class SkLayerDrawLooper : public SkDrawLooper {
public:
SkLayerDrawLooper();
virtual ~SkLayerDrawLooper();
/** Call for each layer you want to add (from top to bottom).
This returns a paint you can modify, but that ptr is only valid until
the next call made to this object.
*/
SkPaint* addLayer(SkScalar dx, SkScalar dy);
/** Helper for addLayer() which passes (0, 0) for the offset parameters
*/
SkPaint* addLayer() {
return this->addLayer(0, 0);
}
// overrides from SkDrawLooper
virtual void init(SkCanvas*);
virtual bool next(SkCanvas*, SkPaint* paint);
// must be public for Registrar :(
static SkFlattenable* CreateProc(SkFlattenableReadBuffer& buffer) {
return SkNEW_ARGS(SkLayerDrawLooper, (buffer));
}
protected:
SkLayerDrawLooper(SkFlattenableReadBuffer&);
// overrides from SkFlattenable
virtual void flatten(SkFlattenableWriteBuffer& );
virtual Factory getFactory() { return CreateProc; }
private:
struct Rec {
Rec* fNext;
SkPaint fPaint;
SkPoint fOffset;
static Rec* Reverse(Rec*);
};
Rec* fRecs;
int fCount;
// state-machine during the init/next cycle
Rec* fCurrRec;
class MyRegistrar : public SkFlattenable::Registrar {
public:
MyRegistrar();
};
typedef SkDrawLooper INHERITED;
};
#endif
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