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1 // Copyright (c) 2016 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef UI_GFX_COLOR_TRANSFORM_H_ | 5 #ifndef UI_GFX_COLOR_TRANSFORM_H_ |
6 #define UI_GFX_COLOR_TRANSFORM_H_ | 6 #define UI_GFX_COLOR_TRANSFORM_H_ |
7 | 7 |
8 #include "base/macros.h" | 8 #include "base/macros.h" |
9 #include "ui/gfx/color_space.h" | 9 #include "ui/gfx/color_space.h" |
10 #include "ui/gfx/geometry/point3_f.h" | 10 #include "ui/gfx/geometry/point3_f.h" |
11 #include "ui/gfx/gfx_export.h" | 11 #include "ui/gfx/gfx_export.h" |
12 | 12 |
13 namespace gfx { | 13 namespace gfx { |
14 | 14 |
15 class GFX_EXPORT ColorTransform { | 15 class GFX_EXPORT ColorTransform { |
16 public: | 16 public: |
17 enum class Intent { INTENT_ABSOLUTE, INTENT_PERCEPTUAL, TEST_NO_OPT }; | 17 enum class Intent { INTENT_ABSOLUTE, INTENT_PERCEPTUAL, TEST_NO_OPT }; |
18 | 18 |
19 // TriStimulus is a color coordinate in any color space. | 19 // TriStimulus is a color coordinate in any color space. |
20 // Channel order is XYZ, RGB or YUV. | 20 // Channel order is XYZ, RGB or YUV. |
21 typedef Point3F TriStim; | 21 typedef Point3F TriStim; |
22 | 22 |
23 ColorTransform(); | 23 ColorTransform(); |
24 virtual ~ColorTransform(); | 24 virtual ~ColorTransform(); |
| 25 virtual gfx::ColorSpace GetSrcColorSpace() const = 0; |
| 26 virtual gfx::ColorSpace GetDstColorSpace() const = 0; |
25 | 27 |
26 // Perform transformation of colors, |colors| is both input and output. | 28 // Perform transformation of colors, |colors| is both input and output. |
27 virtual void Transform(TriStim* colors, size_t num) = 0; | 29 virtual void Transform(TriStim* colors, size_t num) const = 0; |
| 30 |
| 31 // Return GLSL shader source that defines a function DoColorConversion that |
| 32 // converts a vec3 according to this transform. |
| 33 virtual bool CanGetShaderSource() const = 0; |
| 34 virtual std::string GetShaderSource() const = 0; |
| 35 |
| 36 // Returns true if this transform is the identity. |
| 37 virtual bool IsIdentity() const = 0; |
28 | 38 |
29 virtual size_t NumberOfStepsForTesting() const = 0; | 39 virtual size_t NumberOfStepsForTesting() const = 0; |
30 | 40 |
31 static std::unique_ptr<ColorTransform> NewColorTransform( | 41 static std::unique_ptr<ColorTransform> NewColorTransform( |
32 const ColorSpace& from, | 42 const ColorSpace& from, |
33 const ColorSpace& to, | 43 const ColorSpace& to, |
34 Intent intent); | 44 Intent intent); |
35 | 45 |
36 private: | 46 private: |
37 DISALLOW_COPY_AND_ASSIGN(ColorTransform); | 47 DISALLOW_COPY_AND_ASSIGN(ColorTransform); |
38 }; | 48 }; |
39 | 49 |
40 } // namespace gfx | 50 } // namespace gfx |
41 | 51 |
42 #endif // UI_GFX_COLOR_TRANSFORM_H_ | 52 #endif // UI_GFX_COLOR_TRANSFORM_H_ |
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