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 SkRectShaderImageFilter_DEFINED
9 #define SkRectShaderImageFilter_DEFINED
10 
11 #include "SkImageFilter.h"
12 #include "SkRect.h"
13 
14 class SkShader;
15 
16 class SK_API SkRectShaderImageFilter : public SkImageFilter {
17 public:
18     /** Create a new image filter which fills the given rectangle with pixels
19      *  produced by the given SkShader. If no rectangle is specified, an output
20      *  is produced with the same bounds as the input primitive (even though
21      *  the input primitive's pixels are not used for processing).
22      *  @param s     Shader to call for processing. Cannot be NULL. Will be
23      *               ref'ed by the new image filter.
24      *  @param rect  Rectangle of output pixels in which to apply the shader.
25      *               If NULL or a given crop edge is not specified, the source
26      *               primitive's bounds are used instead.
27      */
28     SK_ATTR_DEPRECATED("use Create(SkShader*, const CropRect*)")
29     static SkRectShaderImageFilter* Create(SkShader* s, const SkRect& rect);
30 
31     static SkRectShaderImageFilter* Create(SkShader* s, const CropRect* rect = NULL);
32     virtual ~SkRectShaderImageFilter();
33 
34     SK_TO_STRING_OVERRIDE()
35     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkRectShaderImageFilter)
36 
37 protected:
38     void flatten(SkWriteBuffer&) const override;
39 
40     virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
41                                SkBitmap* result, SkIPoint* loc) const override;
42 
43 private:
44     SkRectShaderImageFilter(SkShader* s, const CropRect* rect);
45     SkShader*  fShader;
46 
47     typedef SkImageFilter INHERITED;
48 };
49 
50 #endif
51