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 #ifndef SkOffsetImageFilter_DEFINED
9 #define SkOffsetImageFilter_DEFINED
10 
11 #include "SkFlattenable.h"
12 #include "SkImageFilter.h"
13 #include "SkPoint.h"
14 
15 class SK_API SkOffsetImageFilter : public SkImageFilter {
16 public:
17     static sk_sp<SkImageFilter> Make(SkScalar dx, SkScalar dy,
18                                      sk_sp<SkImageFilter> input,
19                                      const CropRect* cropRect = nullptr);
20 
21     SkRect computeFastBounds(const SkRect& src) const override;
22 
23 protected:
24     void flatten(SkWriteBuffer&) const override;
25     sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&,
26                                         SkIPoint* offset) const override;
27     sk_sp<SkImageFilter> onMakeColorSpace(SkColorSpaceXformer*) const override;
28     SkIRect onFilterNodeBounds(const SkIRect&, const SkMatrix& ctm,
29                                MapDirection, const SkIRect* inputRect) const override;
30 
31 private:
32     SK_FLATTENABLE_HOOKS(SkOffsetImageFilter)
33 
34     SkOffsetImageFilter(SkScalar dx, SkScalar dy, sk_sp<SkImageFilter> input, const CropRect*);
35 
36     SkVector fOffset;
37 
38     typedef SkImageFilter INHERITED;
39 };
40 
41 #endif
42