SkMorphologyImageFilter.h revision f1369ce607adf55ffffe58fb93893bafb6ff6ebe 
1/*
2 * Copyright 2012 The Android Open Source Project
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8
9#ifndef SkMorphologyImageFilter_DEFINED
10#define SkMorphologyImageFilter_DEFINED
11
12#include "SkSingleInputImageFilter.h"
13
14class SK_API SkMorphologyImageFilter : public SkSingleInputImageFilter {
15public:
16    SkMorphologyImageFilter(int radiusX, int radiusY, SkImageFilter* input);
17
18protected:
19    SkMorphologyImageFilter(SkFlattenableReadBuffer& buffer);
20    virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
21    virtual bool canFilterImageGPU() const SK_OVERRIDE { return true; }
22
23    SkISize    radius() const { return fRadius; }
24
25private:
26    SkISize    fRadius;
27    typedef SkSingleInputImageFilter INHERITED;
28};
29
30class SK_API SkDilateImageFilter : public SkMorphologyImageFilter {
31public:
32    SkDilateImageFilter(int radiusX, int radiusY, SkImageFilter* input = NULL)
33    : INHERITED(radiusX, radiusY, input) {}
34
35    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
36                               SkBitmap* result, SkIPoint* offset) SK_OVERRIDE;
37    virtual GrTexture* onFilterImageGPU(GrTexture* src, const SkRect& rect) SK_OVERRIDE;
38
39    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDilateImageFilter)
40
41protected:
42    SkDilateImageFilter(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {}
43
44private:
45    typedef SkMorphologyImageFilter INHERITED;
46};
47
48class SK_API SkErodeImageFilter : public SkMorphologyImageFilter {
49public:
50    SkErodeImageFilter(int radiusX, int radiusY, SkImageFilter* input = NULL)
51    : INHERITED(radiusX, radiusY, input) {}
52
53    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
54                               SkBitmap* result, SkIPoint* offset) SK_OVERRIDE;
55    virtual GrTexture* onFilterImageGPU(GrTexture* src, const SkRect& rect) SK_OVERRIDE;
56
57    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkErodeImageFilter)
58
59protected:
60    SkErodeImageFilter(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {}
61
62private:
63    typedef SkMorphologyImageFilter INHERITED;
64};
65
66#endif
67
68