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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 Google Inc. |
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 SkImageFilter_DEFINED | 8 #ifndef SkImageFilter_DEFINED |
9 #define SkImageFilter_DEFINED | 9 #define SkImageFilter_DEFINED |
10 | 10 |
11 #include "SkFlattenable.h" | 11 #include "SkFlattenable.h" |
12 #include "SkRect.h" | 12 #include "SkRect.h" |
13 | 13 |
14 class SkBitmap; | 14 class SkBitmap; |
15 class SkColorFilter; | 15 class SkColorFilter; |
16 class SkDevice; | 16 class SkBaseDevice; |
17 class SkMatrix; | 17 class SkMatrix; |
18 struct SkIPoint; | 18 struct SkIPoint; |
19 class SkShader; | 19 class SkShader; |
20 class GrEffectRef; | 20 class GrEffectRef; |
21 class GrTexture; | 21 class GrTexture; |
22 | 22 |
23 /** | 23 /** |
24 * Base class for image filters. If one is installed in the paint, then | 24 * Base class for image filters. If one is installed in the paint, then |
25 * all drawing occurs as usual, but it is as if the drawing happened into an | 25 * all drawing occurs as usual, but it is as if the drawing happened into an |
26 * offscreen (before the xfermode is applied). This offscreen bitmap will | 26 * offscreen (before the xfermode is applied). This offscreen bitmap will |
27 * then be handed to the imagefilter, who in turn creates a new bitmap which | 27 * then be handed to the imagefilter, who in turn creates a new bitmap which |
28 * is what will finally be drawn to the device (using the original xfermode). | 28 * is what will finally be drawn to the device (using the original xfermode). |
29 */ | 29 */ |
30 class SK_API SkImageFilter : public SkFlattenable { | 30 class SK_API SkImageFilter : public SkFlattenable { |
31 public: | 31 public: |
32 SK_DECLARE_INST_COUNT(SkImageFilter) | 32 SK_DECLARE_INST_COUNT(SkImageFilter) |
33 | 33 |
34 class Proxy { | 34 class Proxy { |
35 public: | 35 public: |
36 virtual ~Proxy() {}; | 36 virtual ~Proxy() {}; |
37 | 37 |
38 virtual SkDevice* createDevice(int width, int height) = 0; | 38 virtual SkBaseDevice* createDevice(int width, int height) = 0; |
39 // returns true if the proxy can handle this filter natively | 39 // returns true if the proxy can handle this filter natively |
40 virtual bool canHandleImageFilter(SkImageFilter*) = 0; | 40 virtual bool canHandleImageFilter(SkImageFilter*) = 0; |
41 // returns true if the proxy handled the filter itself. if this returns | 41 // returns true if the proxy handled the filter itself. if this returns |
42 // false then the filter's code will be called. | 42 // false then the filter's code will be called. |
43 virtual bool filterImage(SkImageFilter*, const SkBitmap& src, | 43 virtual bool filterImage(SkImageFilter*, const SkBitmap& src, |
44 const SkMatrix& ctm, | 44 const SkMatrix& ctm, |
45 SkBitmap* result, SkIPoint* offset) = 0; | 45 SkBitmap* result, SkIPoint* offset) = 0; |
46 }; | 46 }; |
47 | 47 |
48 /** | 48 /** |
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167 bool applyCropRect(SkIRect* rect, const SkMatrix& matrix) const; | 167 bool applyCropRect(SkIRect* rect, const SkMatrix& matrix) const; |
168 | 168 |
169 private: | 169 private: |
170 typedef SkFlattenable INHERITED; | 170 typedef SkFlattenable INHERITED; |
171 int fInputCount; | 171 int fInputCount; |
172 SkImageFilter** fInputs; | 172 SkImageFilter** fInputs; |
173 SkIRect fCropRect; | 173 SkIRect fCropRect; |
174 }; | 174 }; |
175 | 175 |
176 #endif | 176 #endif |
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