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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkColor.h"
#include "SkImageFilter.h"
#include "SkScalar.h"
class SK_API SkDropShadowImageFilter : public SkImageFilter {
public:
enum ShadowMode {
kDrawShadowAndForeground_ShadowMode,
kDrawShadowOnly_ShadowMode,
kLast_ShadowMode = kDrawShadowOnly_ShadowMode
};
static const int kShadowModeCount = kLast_ShadowMode+1;
static SkImageFilter* Create(SkScalar dx, SkScalar dy, SkScalar sigmaX, SkScalar sigmaY,
SkColor color, ShadowMode shadowMode, SkImageFilter* input = NULL,
const CropRect* cropRect = NULL) {
return new SkDropShadowImageFilter(dx, dy, sigmaX, sigmaY, color, shadowMode, input,
cropRect);
}
void computeFastBounds(const SkRect&, SkRect*) const override;
SK_TO_STRING_OVERRIDE()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDropShadowImageFilter)
protected:
void flatten(SkWriteBuffer&) const override;
bool onFilterImage(Proxy*, const SkBitmap& source, const Context&, SkBitmap* result,
SkIPoint* loc) const override;
void onFilterNodeBounds(const SkIRect& src, const SkMatrix&,
SkIRect* dst, MapDirection) const override;
private:
SkDropShadowImageFilter(SkScalar dx, SkScalar dy, SkScalar sigmaX, SkScalar sigmaY, SkColor,
ShadowMode shadowMode, SkImageFilter* input, const CropRect* cropRect);
SkScalar fDx, fDy, fSigmaX, fSigmaY;
SkColor fColor;
ShadowMode fShadowMode;
typedef SkImageFilter INHERITED;
};
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