SkImageSource.h revision cd56f812e09fdd8f8322c5c28cbc4423a74b9a0a 
1/*
2 * Copyright 2015 Google Inc.
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#ifndef SkImageSource_DEFINED
9#define SkImageSource_DEFINED
10
11#include "SkImageFilter.h"
12
13class SkImage;
14
15class SK_API SkImageSource : public SkImageFilter {
16public:
17    static SkImageFilter* Create(const SkImage*);
18    static SkImageFilter* Create(const SkImage*,
19                                 const SkRect& srcRect,
20                                 const SkRect& dstRect,
21                                 SkFilterQuality);
22
23    void computeFastBounds(const SkRect& src, SkRect* dst) const override;
24
25    SK_TO_STRING_OVERRIDE()
26    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkImageSource)
27
28protected:
29    void flatten(SkWriteBuffer&) const override;
30
31    bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
32                       SkBitmap* result, SkIPoint* offset) const override;
33
34private:
35    explicit SkImageSource(const SkImage*);
36    SkImageSource(const SkImage*,
37                  const SkRect& srcRect,
38                  const SkRect& dstRect,
39                  SkFilterQuality);
40
41    SkAutoTUnref<const SkImage> fImage;
42    SkRect                      fSrcRect, fDstRect;
43    SkFilterQuality             fFilterQuality;
44
45    typedef SkImageFilter INHERITED;
46};
47
48#endif
49