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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.
- */
- #ifndef SkDropShadowImageFilter_DEFINED
- #define SkDropShadowImageFilter_DEFINED
- #include "include/core/SkColor.h"
- #include "include/core/SkFlattenable.h"
- #include "include/core/SkImageFilter.h"
- #include "include/core/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 sk_sp<SkImageFilter> Make(SkScalar dx, SkScalar dy, SkScalar sigmaX, SkScalar sigmaY,
- SkColor color, ShadowMode shadowMode,
- sk_sp<SkImageFilter> input,
- const CropRect* cropRect = nullptr);
- SkRect computeFastBounds(const SkRect&) const override;
- protected:
- void flatten(SkWriteBuffer&) const override;
- sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&,
- SkIPoint* offset) const override;
- SkIRect onFilterNodeBounds(const SkIRect& src, const SkMatrix& ctm,
- MapDirection, const SkIRect* inputRect) const override;
- private:
- SK_FLATTENABLE_HOOKS(SkDropShadowImageFilter)
- SkDropShadowImageFilter(SkScalar dx, SkScalar dy, SkScalar sigmaX, SkScalar sigmaY, SkColor,
- ShadowMode shadowMode, sk_sp<SkImageFilter> input,
- const CropRect* cropRect);
- SkScalar fDx, fDy, fSigmaX, fSigmaY;
- SkColor fColor;
- ShadowMode fShadowMode;
- typedef SkImageFilter INHERITED;
- };
- #endif
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