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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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 SkLumaColorFilter_DEFINED | 8 #ifndef SkLumaColorFilter_DEFINED |
9 #define SkLumaColorFilter_DEFINED | 9 #define SkLumaColorFilter_DEFINED |
10 | 10 |
11 #include "SkColorFilter.h" | 11 #include "SkColorFilter.h" |
12 | 12 |
13 /** | 13 /** |
14 * Luminance-to-alpha color filter, as defined in | 14 * Luminance-to-alpha color filter, as defined in |
15 * http://www.w3.org/TR/SVG/masking.html#Masking | 15 * http://www.w3.org/TR/SVG/masking.html#Masking |
16 * http://www.w3.org/TR/css-masking/#MaskValues | 16 * http://www.w3.org/TR/css-masking/#MaskValues |
17 * | 17 * |
18 * The resulting color is black with transparency equal to the | 18 * The resulting color is black with transparency equal to the |
19 * luminance value modulated by alpha: | 19 * luminance value modulated by alpha: |
20 * | 20 * |
21 * C' = [ Lum * a, 0, 0, 0 ] | 21 * C' = [ Lum * a, 0, 0, 0 ] |
22 * | 22 * |
23 */ | 23 */ |
24 class SK_API SkLumaColorFilter : public SkColorFilter { | 24 class SK_API SkLumaColorFilter : public SkColorFilter { |
25 public: | 25 public: |
26 static SkColorFilter* Create(); | 26 static sk_sp<SkColorFilter> Make(); |
| 27 |
| 28 #ifdef SK_SUPPORT_LEGACY_COLORFILTER_PTR |
| 29 static SkColorFilter* Create() { return Make().release(); } |
| 30 #endif |
27 | 31 |
28 void filterSpan(const SkPMColor src[], int count, SkPMColor[]) const overrid
e; | 32 void filterSpan(const SkPMColor src[], int count, SkPMColor[]) const overrid
e; |
29 | 33 |
30 #if SK_SUPPORT_GPU | 34 #if SK_SUPPORT_GPU |
31 const GrFragmentProcessor* asFragmentProcessor(GrContext*) const override; | 35 const GrFragmentProcessor* asFragmentProcessor(GrContext*) const override; |
32 #endif | 36 #endif |
33 | 37 |
34 SK_TO_STRING_OVERRIDE() | 38 SK_TO_STRING_OVERRIDE() |
35 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLumaColorFilter) | 39 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLumaColorFilter) |
36 | 40 |
37 protected: | 41 protected: |
38 void flatten(SkWriteBuffer&) const override; | 42 void flatten(SkWriteBuffer&) const override; |
39 | 43 |
40 private: | 44 private: |
41 SkLumaColorFilter(); | 45 SkLumaColorFilter(); |
42 | 46 |
43 typedef SkColorFilter INHERITED; | 47 typedef SkColorFilter INHERITED; |
44 }; | 48 }; |
45 | 49 |
46 #endif | 50 #endif |
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