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 SkImageShader_DEFINED
9 #define SkImageShader_DEFINED
10 
11 #include "SkImage.h"
12 #include "SkShader.h"
13 #include "SkBitmapProcShader.h"
14 
15 class SkImageShader : public SkShader {
16 public:
17     static sk_sp<SkShader> Make(sk_sp<SkImage>, TileMode tx, TileMode ty,
18                                 const SkMatrix* localMatrix);
19 
20     bool isOpaque() const override;
21 
22     SK_TO_STRING_OVERRIDE()
23     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkImageShader)
24 
25 #if SK_SUPPORT_GPU
26     sk_sp<GrFragmentProcessor> asFragmentProcessor(const AsFPArgs&) const override;
27 #endif
28 
29     SkImageShader(sk_sp<SkImage>, TileMode tx, TileMode ty, const SkMatrix* localMatrix);
30 
31 protected:
32     void flatten(SkWriteBuffer&) const override;
33     Context* onMakeContext(const ContextRec&, SkArenaAlloc* storage) const override;
34 #ifdef SK_SUPPORT_LEGACY_SHADER_ISABITMAP
35     bool onIsABitmap(SkBitmap*, SkMatrix*, TileMode*) const override;
36 #endif
37     SkImage* onIsAImage(SkMatrix*, TileMode*) const override;
38 
39     bool onAppendStages(SkRasterPipeline*, SkColorSpace*, SkArenaAlloc*,
40                         const SkMatrix& ctm, const SkPaint&, const SkMatrix*) const override;
41 
42     sk_sp<SkImage>  fImage;
43     const TileMode  fTileModeX;
44     const TileMode  fTileModeY;
45 
46 private:
47     friend class SkShader;
48 
49     typedef SkShader INHERITED;
50 };
51 
52 #endif
53