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1 /* | 1 /* |
2 * Copyright 2006 The Android Open Source Project | 2 * Copyright 2006 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 SkColorFilter_DEFINED | 8 #ifndef SkColorFilter_DEFINED |
9 #define SkColorFilter_DEFINED | 9 #define SkColorFilter_DEFINED |
10 | 10 |
11 #include "SkColor.h" | 11 #include "SkColor.h" |
12 #include "SkFlattenable.h" | 12 #include "SkFlattenable.h" |
13 #include "SkTDArray.h" | 13 #include "SkTDArray.h" |
14 #include "SkXfermode.h" | 14 #include "SkXfermode.h" |
15 | 15 |
16 class SkBitmap; | 16 class SkBitmap; |
17 class GrProcessor; | 17 class GrProcessor; |
18 class GrContext; | 18 class GrContext; |
19 | 19 |
20 /** | 20 /** |
21 * ColorFilters are optional objects in the drawing pipeline. When present in | 21 * ColorFilters are optional objects in the drawing pipeline. When present in |
22 * a paint, they are called with the "src" colors, and return new colors, which | 22 * a paint, they are called with the "src" colors, and return new colors, which |
23 * are then passed onto the next stage (either ImageFilter or Xfermode). | 23 * are then passed onto the next stage (either ImageFilter or Xfermode). |
24 * | 24 * |
25 * All subclasses are required to be reentrant-safe : it must be legal to share | 25 * All subclasses are required to be reentrant-safe : it must be legal to share |
26 * the same instance between several threads. | 26 * the same instance between several threads. |
27 */ | 27 */ |
28 class SK_API SkColorFilter : public SkFlattenable { | 28 class SK_API SkColorFilter : public SkFlattenable { |
29 public: | 29 public: |
30 SK_DECLARE_INST_COUNT(SkColorFilter) | |
31 | |
32 /** | 30 /** |
33 * If the filter can be represented by a source color plus Mode, this | 31 * If the filter can be represented by a source color plus Mode, this |
34 * returns true, and sets (if not NULL) the color and mode appropriately. | 32 * returns true, and sets (if not NULL) the color and mode appropriately. |
35 * If not, this returns false and ignores the parameters. | 33 * If not, this returns false and ignores the parameters. |
36 */ | 34 */ |
37 virtual bool asColorMode(SkColor* color, SkXfermode::Mode* mode) const; | 35 virtual bool asColorMode(SkColor* color, SkXfermode::Mode* mode) const; |
38 | 36 |
39 /** | 37 /** |
40 * If the filter can be represented by a 5x4 matrix, this | 38 * If the filter can be represented by a 5x4 matrix, this |
41 * returns true, and sets the matrix appropriately. | 39 * returns true, and sets the matrix appropriately. |
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156 * | 154 * |
157 * e.g. compose(filter, compose(compose(filter, filter), filter)) --> 4 | 155 * e.g. compose(filter, compose(compose(filter, filter), filter)) --> 4 |
158 */ | 156 */ |
159 virtual int privateComposedFilterCount() const { return 1; } | 157 virtual int privateComposedFilterCount() const { return 1; } |
160 friend class SkComposeColorFilter; | 158 friend class SkComposeColorFilter; |
161 | 159 |
162 typedef SkFlattenable INHERITED; | 160 typedef SkFlattenable INHERITED; |
163 }; | 161 }; |
164 | 162 |
165 #endif | 163 #endif |
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