/*
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* Copyright 2013 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkDropShadowImageFilter_DEFINED
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#define SkDropShadowImageFilter_DEFINED
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#include "SkColor.h"
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#include "SkFlattenable.h"
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#include "SkImageFilter.h"
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#include "SkScalar.h"
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class SK_API SkDropShadowImageFilter : public SkImageFilter {
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public:
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enum ShadowMode {
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kDrawShadowAndForeground_ShadowMode,
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kDrawShadowOnly_ShadowMode,
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kLast_ShadowMode = kDrawShadowOnly_ShadowMode
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};
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static const int kShadowModeCount = kLast_ShadowMode+1;
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static sk_sp<SkImageFilter> Make(SkScalar dx, SkScalar dy, SkScalar sigmaX, SkScalar sigmaY,
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SkColor color, ShadowMode shadowMode,
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sk_sp<SkImageFilter> input,
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const CropRect* cropRect = nullptr);
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SkRect computeFastBounds(const SkRect&) const override;
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protected:
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void flatten(SkWriteBuffer&) const override;
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sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&,
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SkIPoint* offset) const override;
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sk_sp<SkImageFilter> onMakeColorSpace(SkColorSpaceXformer*) const override;
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SkIRect onFilterNodeBounds(const SkIRect& src, const SkMatrix& ctm,
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MapDirection, const SkIRect* inputRect) const override;
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private:
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SK_FLATTENABLE_HOOKS(SkDropShadowImageFilter)
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SkDropShadowImageFilter(SkScalar dx, SkScalar dy, SkScalar sigmaX, SkScalar sigmaY, SkColor,
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ShadowMode shadowMode, sk_sp<SkImageFilter> input,
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const CropRect* cropRect);
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SkScalar fDx, fDy, fSigmaX, fSigmaY;
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SkColor fColor;
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ShadowMode fShadowMode;
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typedef SkImageFilter INHERITED;
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};
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#endif
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