1 /*
2  * Copyright 2013 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 SkTileImageFilter_DEFINED
9 #define SkTileImageFilter_DEFINED
10 
11 #include "SkImageFilter.h"
12 
13 class SK_API SkTileImageFilter : public SkImageFilter {
14 public:
15     /** Create a tile image filter
16         @param src  Defines the pixels to tile
17         @param dst  Defines the pixels where tiles are drawn
18         @param input    Input from which the subregion defined by srcRect will be tiled
19     */
20     static sk_sp<SkImageFilter> Make(const SkRect& src,
21                                      const SkRect& dst,
22                                      sk_sp<SkImageFilter> input);
23 
24     SkIRect onFilterBounds(const SkIRect& src, const SkMatrix&, MapDirection) const override;
25     SkIRect onFilterNodeBounds(const SkIRect&, const SkMatrix&, MapDirection) const override;
26     SkRect computeFastBounds(const SkRect& src) const override;
27 
28     SK_TO_STRING_OVERRIDE()
29     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTileImageFilter)
30 
31 protected:
32     void flatten(SkWriteBuffer& buffer) const override;
33 
34     sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&,
35                                         SkIPoint* offset) const override;
36 
37 private:
SkTileImageFilter(const SkRect & srcRect,const SkRect & dstRect,sk_sp<SkImageFilter> input)38     SkTileImageFilter(const SkRect& srcRect, const SkRect& dstRect, sk_sp<SkImageFilter> input)
39         : INHERITED(&input, 1, nullptr), fSrcRect(srcRect), fDstRect(dstRect) {}
40 
41     SkRect fSrcRect;
42     SkRect fDstRect;
43 
44     typedef SkImageFilter INHERITED;
45 };
46 
47 #endif
48