/* * Copyright 2012 The Android Open Source Project * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #ifndef SkMorphologyImageFilter_DEFINED #define SkMorphologyImageFilter_DEFINED #include "SkColor.h" #include "SkImageFilter.h" #include "SkSize.h" /////////////////////////////////////////////////////////////////////////////// class SK_API SkMorphologyImageFilter : public SkImageFilter { public: SkRect computeFastBounds(const SkRect& src) const override; SkIRect onFilterNodeBounds(const SkIRect& src, const SkMatrix&, MapDirection) const override; /** * All morphology procs have the same signature: src is the source buffer, dst the * destination buffer, radius is the morphology radius, width and height are the bounds * of the destination buffer (in pixels), and srcStride and dstStride are the * number of pixels per row in each buffer. All buffers are 8888. */ typedef void (*Proc)(const SkPMColor* src, SkPMColor* dst, int radius, int width, int height, int srcStride, int dstStride); protected: enum Op { kErode_Op, kDilate_Op, }; virtual Op op() const = 0; SkMorphologyImageFilter(int radiusX, int radiusY, sk_sp input, const CropRect* cropRect); sk_sp onFilterImage(SkSpecialImage* source, const Context&, SkIPoint* offset) const override; sk_sp onMakeColorSpace(SkColorSpaceXformer*) const override; void flatten(SkWriteBuffer&) const override; SkISize radius() const { return fRadius; } private: SkISize fRadius; typedef SkImageFilter INHERITED; }; /////////////////////////////////////////////////////////////////////////////// class SK_API SkDilateImageFilter : public SkMorphologyImageFilter { public: static sk_sp Make(int radiusX, int radiusY, sk_sp input, const CropRect* cropRect = nullptr); void toString(SkString* str) const override; SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDilateImageFilter) protected: Op op() const override { return kDilate_Op; } private: SkDilateImageFilter(int radiusX, int radiusY, sk_sp input, const CropRect* cropRect) : INHERITED(radiusX, radiusY, input, cropRect) {} typedef SkMorphologyImageFilter INHERITED; }; /////////////////////////////////////////////////////////////////////////////// class SK_API SkErodeImageFilter : public SkMorphologyImageFilter { public: static sk_sp Make(int radiusX, int radiusY, sk_sp input, const CropRect* cropRect = nullptr); void toString(SkString* str) const override; SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkErodeImageFilter) protected: Op op() const override { return kErode_Op; } private: SkErodeImageFilter(int radiusX, int radiusY, sk_sp input, const CropRect* cropRect) : INHERITED(radiusX, radiusY, input, cropRect) {} typedef SkMorphologyImageFilter INHERITED; }; #endif