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 SkComposeImageFilter_DEFINED
9 #define SkComposeImageFilter_DEFINED
10 
11 #include "SkImageFilter.h"
12 
13 class SK_API SkComposeImageFilter : public SkImageFilter {
14 public:
15     virtual ~SkComposeImageFilter();
16 
Create(SkImageFilter * outer,SkImageFilter * inner)17     static SkImageFilter* Create(SkImageFilter* outer, SkImageFilter* inner) {
18         if (NULL == outer) {
19             return SkSafeRef(inner);
20         }
21         if (NULL == inner) {
22             return SkRef(outer);
23         }
24         SkImageFilter* inputs[2] = { outer, inner };
25         return SkNEW_ARGS(SkComposeImageFilter, (inputs));
26     }
27     void computeFastBounds(const SkRect& src, SkRect* dst) const override;
28 
29     SK_TO_STRING_OVERRIDE()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkComposeImageFilter)30     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkComposeImageFilter)
31 
32 protected:
33     explicit SkComposeImageFilter(SkImageFilter* inputs[2]) : INHERITED(2, inputs) {
34         SkASSERT(inputs[0]);
35         SkASSERT(inputs[1]);
36     }
37     virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
38                                SkBitmap* result, SkIPoint* loc) const override;
39     bool onFilterBounds(const SkIRect&, const SkMatrix&, SkIRect*) const override;
40 
41 private:
42     typedef SkImageFilter INHERITED;
43 };
44 
45 #endif
46