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| 1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2009 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 APP_GFX_COLOR_UTILS_H_ | 5 #ifndef APP_GFX_COLOR_UTILS_H_ |
| 6 #define APP_GFX_COLOR_UTILS_H_ | 6 #define APP_GFX_COLOR_UTILS_H_ |
| 7 | 7 |
| 8 #include "third_party/skia/include/core/SkColor.h" | 8 #include "third_party/skia/include/core/SkColor.h" |
| 9 | 9 |
| 10 class SkBitmap; | 10 class SkBitmap; |
| 11 | 11 |
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| 22 struct LabColor { | 22 struct LabColor { |
| 23 int L; | 23 int L; |
| 24 int a; | 24 int a; |
| 25 int b; | 25 int b; |
| 26 }; | 26 }; |
| 27 | 27 |
| 28 // Note: these transformations assume sRGB as the source color space | 28 // Note: these transformations assume sRGB as the source color space |
| 29 | 29 |
| 30 // Convert between different color spaces | 30 // Convert between different color spaces |
| 31 void SkColorToCIEXYZ(SkColor c, CIE_XYZ* xyz); | 31 void SkColorToCIEXYZ(SkColor c, CIE_XYZ* xyz); |
| 32 void CIEXYZToLabColor(const CIE_XYZ& xyz, LabColor* lab); | |
| 33 | |
| 34 SkColor CIEXYZToSkColor(SkAlpha alpha, const CIE_XYZ& xyz); | 32 SkColor CIEXYZToSkColor(SkAlpha alpha, const CIE_XYZ& xyz); |
| 35 void LabColorToCIEXYZ(const LabColor& lab, CIE_XYZ* xyz); | |
| 36 | 33 |
| 37 void SkColorToLabColor(SkColor c, LabColor* lab); | 34 void SkColorToLabColor(SkColor c, LabColor* lab); |
| 38 SkColor LabColorToSkColor(const LabColor& lab, SkAlpha alpha); | 35 SkColor LabColorToSkColor(const LabColor& lab, SkAlpha alpha); |
| 39 | 36 |
| 37 void CIEXYZToLabColor(const CIE_XYZ& xyz, LabColor* lab); |
| 38 void LabColorToCIEXYZ(const LabColor& lab, CIE_XYZ* xyz); |
| 39 |
| 40 // Determine if a given alpha value is nearly completely transparent. | 40 // Determine if a given alpha value is nearly completely transparent. |
| 41 bool IsColorCloseToTransparent(SkAlpha alpha); | 41 bool IsColorCloseToTransparent(SkAlpha alpha); |
| 42 | 42 |
| 43 // Determine if a color is near grey. | 43 // Determine if a color is near grey. |
| 44 bool IsColorCloseToGrey(int r, int g, int b); | 44 bool IsColorCloseToGrey(int r, int g, int b); |
| 45 | 45 |
| 46 // Gets a color representing a bitmap. The definition of "representing" is the | 46 // Gets a color representing a bitmap. The definition of "representing" is the |
| 47 // average color in the bitmap. The color returned is modified to have the | 47 // average color in the bitmap. The color returned is modified to have the |
| 48 // specified alpha. | 48 // specified alpha. |
| 49 SkColor GetAverageColorOfFavicon(SkBitmap* bitmap, SkAlpha alpha); | 49 SkColor GetAverageColorOfFavicon(SkBitmap* bitmap, SkAlpha alpha); |
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| 61 SkColor PickMoreReadableColor(SkColor foreground1, | 61 SkColor PickMoreReadableColor(SkColor foreground1, |
| 62 SkColor foreground2, | 62 SkColor foreground2, |
| 63 SkColor background); | 63 SkColor background); |
| 64 | 64 |
| 65 // Gets a Windows system color as a SkColor | 65 // Gets a Windows system color as a SkColor |
| 66 SkColor GetSysSkColor(int which); | 66 SkColor GetSysSkColor(int which); |
| 67 | 67 |
| 68 } // namespace color_utils | 68 } // namespace color_utils |
| 69 | 69 |
| 70 #endif // APP_GFX_COLOR_UTILS_H_ | 70 #endif // APP_GFX_COLOR_UTILS_H_ |
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