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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 "SkImage.h"
12 #include "SkImageFilter.h"
13 
14 class SK_API SkImageSource : public SkImageFilter {
15 public:
16     static sk_sp<SkImageFilter> Make(sk_sp<SkImage> image);
17     static sk_sp<SkImageFilter> Make(sk_sp<SkImage> image,
18                                      const SkRect& srcRect,
19                                      const SkRect& dstRect,
20                                      SkFilterQuality filterQuality);
21 
22     SkRect computeFastBounds(const SkRect& src) const override;
23 
24     SK_TO_STRING_OVERRIDE()
25     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkImageSource)
26 
27 protected:
28     void flatten(SkWriteBuffer&) const override;
29 
30     sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&,
31                                         SkIPoint* offset) const override;
32     sk_sp<SkImageFilter> onMakeColorSpace(SkColorSpaceXformer*) const override;
33 
34 private:
35     explicit SkImageSource(sk_sp<SkImage>);
36     SkImageSource(sk_sp<SkImage>,
37                   const SkRect& srcRect,
38                   const SkRect& dstRect,
39                   SkFilterQuality);
40 
41     sk_sp<SkImage>   fImage;
42     SkRect           fSrcRect, fDstRect;
43     SkFilterQuality  fFilterQuality;
44 
45     typedef SkImageFilter INHERITED;
46 };
47 
48 #endif
49