SkTestImageFilters.h revision ba28d03e94dc221d6a803bf2a84a420b9159255c 
1
2#ifndef _SkTestImageFilters_h
3#define _SkTestImageFilters_h
4
5#include "SkImageFilter.h"
6#include "SkColorFilter.h"
7
8class SkOffsetImageFilter : public SkImageFilter {
9public:
10    SkOffsetImageFilter(SkScalar dx, SkScalar dy) {
11        fOffset.set(dx, dy);
12    }
13
14    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkOffsetImageFilter)
15
16protected:
17    SkOffsetImageFilter(SkFlattenableReadBuffer& buffer);
18
19    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
20                               SkBitmap* result, SkIPoint* loc) SK_OVERRIDE;
21    virtual bool onFilterBounds(const SkIRect&, const SkMatrix&, SkIRect*) SK_OVERRIDE;
22    // overrides from SkFlattenable
23    virtual void flatten(SkFlattenableWriteBuffer&) SK_OVERRIDE;
24
25private:
26    SkVector fOffset;
27
28    typedef SkImageFilter INHERITED;
29};
30
31class SkComposeImageFilter : public SkImageFilter {
32public:
33    SkComposeImageFilter(SkImageFilter* outer, SkImageFilter* inner) {
34        fOuter = outer;
35        fInner = inner;
36        SkSafeRef(outer);
37        SkSafeRef(inner);
38    }
39    virtual ~SkComposeImageFilter();
40
41    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkComposeImageFilter)
42
43protected:
44    SkComposeImageFilter(SkFlattenableReadBuffer& buffer);
45
46    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
47                               SkBitmap* result, SkIPoint* loc) SK_OVERRIDE;
48    virtual bool onFilterBounds(const SkIRect&, const SkMatrix&, SkIRect*) SK_OVERRIDE;
49    // overrides from SkFlattenable
50    virtual void flatten(SkFlattenableWriteBuffer&) SK_OVERRIDE;
51
52private:
53    SkImageFilter*  fOuter;
54    SkImageFilter*  fInner;
55
56    typedef SkImageFilter INHERITED;
57};
58
59#include "SkXfermode.h"
60
61class SkMergeImageFilter : public SkImageFilter {
62public:
63    SkMergeImageFilter(SkImageFilter* first, SkImageFilter* second,
64                       SkXfermode::Mode = SkXfermode::kSrcOver_Mode);
65    SkMergeImageFilter(SkImageFilter* const filters[], int count,
66                       const SkXfermode::Mode modes[] = NULL);
67    virtual ~SkMergeImageFilter();
68
69    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMergeImageFilter)
70
71protected:
72    SkMergeImageFilter(SkFlattenableReadBuffer& buffer);
73
74    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
75                               SkBitmap* result, SkIPoint* loc) SK_OVERRIDE;
76    virtual bool onFilterBounds(const SkIRect&, const SkMatrix&, SkIRect*) SK_OVERRIDE;
77    // overrides from SkFlattenable
78    virtual void flatten(SkFlattenableWriteBuffer&) SK_OVERRIDE;
79
80private:
81    SkImageFilter**     fFilters;
82    uint8_t*            fModes; // SkXfermode::Mode
83    int                 fCount;
84
85    // private storage, to avoid dynamically allocating storage for our copy
86    // of the filters and modes (unless fCount is so large we can't fit).
87    intptr_t    fStorage[16];
88
89    void initAlloc(int count, bool hasModes);
90    void init(SkImageFilter* const [], int count, const SkXfermode::Mode []);
91
92    typedef SkImageFilter INHERITED;
93};
94
95class SkColorFilterImageFilter : public SkImageFilter {
96public:
97    SkColorFilterImageFilter(SkColorFilter* cf) : fColorFilter(cf) {
98        SkSafeRef(cf);
99    }
100    virtual ~SkColorFilterImageFilter();
101
102    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkColorFilterImageFilter)
103
104protected:
105    SkColorFilterImageFilter(SkFlattenableReadBuffer& buffer);
106
107    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
108                               SkBitmap* result, SkIPoint* loc) SK_OVERRIDE;
109    // overrides from SkFlattenable
110    virtual void flatten(SkFlattenableWriteBuffer&) SK_OVERRIDE;
111
112private:
113    SkColorFilter*  fColorFilter;
114
115    typedef SkImageFilter INHERITED;
116};
117
118///////////////////////////////////////////////////////////////////////////////
119
120// Fun mode that scales down (only) and then scales back up to look pixelated
121class SkDownSampleImageFilter : public SkImageFilter {
122public:
123    SkDownSampleImageFilter(SkScalar scale) : fScale(scale) {}
124
125    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDownSampleImageFilter)
126
127protected:
128    SkDownSampleImageFilter(SkFlattenableReadBuffer& buffer);
129
130    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
131                               SkBitmap* result, SkIPoint* loc) SK_OVERRIDE;
132    // overrides from SkFlattenable
133    virtual void flatten(SkFlattenableWriteBuffer&) SK_OVERRIDE;
134
135private:
136    SkScalar fScale;
137
138    typedef SkImageFilter INHERITED;
139};
140
141#endif
142