| /* |
| * 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<SkImageFilter> input, |
| const CropRect* cropRect); |
| sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, |
| const Context&, |
| SkIPoint* offset) const override; |
| sk_sp<SkImageFilter> 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<SkImageFilter> Make(int radiusX, int radiusY, |
| sk_sp<SkImageFilter> input, |
| const CropRect* cropRect = nullptr); |
| |
| SK_TO_STRING_OVERRIDE() |
| SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDilateImageFilter) |
| |
| protected: |
| Op op() const override { return kDilate_Op; } |
| |
| private: |
| SkDilateImageFilter(int radiusX, int radiusY, |
| sk_sp<SkImageFilter> input, |
| const CropRect* cropRect) |
| : INHERITED(radiusX, radiusY, input, cropRect) {} |
| |
| typedef SkMorphologyImageFilter INHERITED; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| class SK_API SkErodeImageFilter : public SkMorphologyImageFilter { |
| public: |
| static sk_sp<SkImageFilter> Make(int radiusX, int radiusY, |
| sk_sp<SkImageFilter> input, |
| const CropRect* cropRect = nullptr); |
| |
| SK_TO_STRING_OVERRIDE() |
| SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkErodeImageFilter) |
| |
| protected: |
| Op op() const override { return kErode_Op; } |
| |
| private: |
| SkErodeImageFilter(int radiusX, int radiusY, |
| sk_sp<SkImageFilter> input, const CropRect* cropRect) |
| : INHERITED(radiusX, radiusY, input, cropRect) {} |
| |
| typedef SkMorphologyImageFilter INHERITED; |
| }; |
| |
| #endif |