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1 /* | 1 /* |
2 * Copyright 2011 The Android Open Source Project | 2 * Copyright 2011 The Android Open Source Project |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkBlurImageFilter_DEFINED | 8 #ifndef SkBlurImageFilter_DEFINED |
9 #define SkBlurImageFilter_DEFINED | 9 #define SkBlurImageFilter_DEFINED |
10 | 10 |
11 #include "SkImageFilter.h" | 11 #include "SkImageFilter.h" |
12 #include "SkSize.h" | 12 #include "SkSize.h" |
13 | 13 |
14 class SK_API SkBlurImageFilter : public SkImageFilter { | 14 class SK_API SkBlurImageFilter : public SkImageFilter { |
15 public: | 15 public: |
16 static SkImageFilter* Create(SkScalar sigmaX, SkScalar sigmaY, SkImageFilter
* input = NULL, | 16 static SkImageFilter* Create(SkScalar sigmaX, SkScalar sigmaY, SkImageFilter
* input = NULL, |
17 const CropRect* cropRect = NULL) { | 17 const CropRect* cropRect = NULL) { |
| 18 if (0 == sigmaX && 0 == sigmaY && nullptr == cropRect) { |
| 19 return SkSafeRef(input); |
| 20 } |
18 return new SkBlurImageFilter(sigmaX, sigmaY, input, cropRect); | 21 return new SkBlurImageFilter(sigmaX, sigmaY, input, cropRect); |
19 } | 22 } |
20 | 23 |
21 void computeFastBounds(const SkRect&, SkRect*) const override; | 24 void computeFastBounds(const SkRect&, SkRect*) const override; |
22 | 25 |
23 SK_TO_STRING_OVERRIDE() | 26 SK_TO_STRING_OVERRIDE() |
24 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBlurImageFilter) | 27 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBlurImageFilter) |
25 | 28 |
26 protected: | 29 protected: |
27 void flatten(SkWriteBuffer&) const override; | 30 void flatten(SkWriteBuffer&) const override; |
28 bool onFilterImage(Proxy*, const SkBitmap& src, const Context&, SkBitmap* re
sult, | 31 bool onFilterImage(Proxy*, const SkBitmap& src, const Context&, SkBitmap* re
sult, |
29 SkIPoint* offset) const override; | 32 SkIPoint* offset) const override; |
30 void onFilterNodeBounds(const SkIRect& src, const SkMatrix&, | 33 void onFilterNodeBounds(const SkIRect& src, const SkMatrix&, |
31 SkIRect* dst, MapDirection) const override; | 34 SkIRect* dst, MapDirection) const override; |
32 bool canFilterImageGPU() const override { return true; } | 35 bool canFilterImageGPU() const override { return true; } |
33 bool filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx, S
kBitmap* result, | 36 bool filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx, S
kBitmap* result, |
34 SkIPoint* offset) const override; | 37 SkIPoint* offset) const override; |
35 | 38 |
36 private: | 39 private: |
37 SkBlurImageFilter(SkScalar sigmaX, | 40 SkBlurImageFilter(SkScalar sigmaX, |
38 SkScalar sigmaY, | 41 SkScalar sigmaY, |
39 SkImageFilter* input, | 42 SkImageFilter* input, |
40 const CropRect* cropRect); | 43 const CropRect* cropRect); |
41 | 44 |
42 SkSize fSigma; | 45 SkSize fSigma; |
43 typedef SkImageFilter INHERITED; | 46 typedef SkImageFilter INHERITED; |
44 }; | 47 }; |
45 | 48 |
46 #endif | 49 #endif |
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