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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 #include "ui/gfx/color_utils.h" | 5 #include "ui/gfx/color_utils.h" |
| 6 | 6 |
| 7 #include <math.h> | 7 #include <math.h> |
| 8 #if defined(OS_WIN) | 8 #include <stdint.h> |
| 9 #include <windows.h> | |
| 10 #endif | |
| 11 | 9 |
| 12 #include <algorithm> | 10 #include <algorithm> |
| 13 | 11 |
| 14 #include "base/basictypes.h" | |
| 15 #include "base/logging.h" | 12 #include "base/logging.h" |
| 16 #include "base/numerics/safe_conversions.h" | 13 #include "base/numerics/safe_conversions.h" |
| 17 #include "build/build_config.h" | 14 #include "build/build_config.h" |
| 18 #if defined(OS_WIN) | |
| 19 #include "skia/ext/skia_utils_win.h" | |
| 20 #endif | |
| 21 #include "third_party/skia/include/core/SkBitmap.h" | 15 #include "third_party/skia/include/core/SkBitmap.h" |
| 22 #include "ui/gfx/color_palette.h" | 16 #include "ui/gfx/color_palette.h" |
| 23 | 17 |
| 18 #if defined(OS_WIN) |
| 19 #include <windows.h> |
| 20 #include "skia/ext/skia_utils_win.h" |
| 21 #endif |
| 22 |
| 24 namespace color_utils { | 23 namespace color_utils { |
| 25 | 24 |
| 26 | 25 |
| 27 // Helper functions ----------------------------------------------------------- | 26 // Helper functions ----------------------------------------------------------- |
| 28 | 27 |
| 29 namespace { | 28 namespace { |
| 30 | 29 |
| 31 int calcHue(double temp1, double temp2, double hue) { | 30 int calcHue(double temp1, double temp2, double hue) { |
| 32 if (hue < 0.0) | 31 if (hue < 0.0) |
| 33 ++hue; | 32 ++hue; |
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| 128 } | 127 } |
| 129 | 128 |
| 130 SkColor HSLToSkColor(const HSL& hsl, SkAlpha alpha) { | 129 SkColor HSLToSkColor(const HSL& hsl, SkAlpha alpha) { |
| 131 double hue = hsl.h; | 130 double hue = hsl.h; |
| 132 double saturation = hsl.s; | 131 double saturation = hsl.s; |
| 133 double lightness = hsl.l; | 132 double lightness = hsl.l; |
| 134 | 133 |
| 135 // If there's no color, we don't care about hue and can do everything based on | 134 // If there's no color, we don't care about hue and can do everything based on |
| 136 // brightness. | 135 // brightness. |
| 137 if (!saturation) { | 136 if (!saturation) { |
| 138 uint8 light; | 137 uint8_t light; |
| 139 | 138 |
| 140 if (lightness < 0) | 139 if (lightness < 0) |
| 141 light = 0; | 140 light = 0; |
| 142 else if (lightness >= 1.0) | 141 else if (lightness >= 1.0) |
| 143 light = 255; | 142 light = 255; |
| 144 else | 143 else |
| 145 light = static_cast<uint8>(SkDoubleToFixed(lightness) >> 8); | 144 light = static_cast<uint8_t>(SkDoubleToFixed(lightness) >> 8); |
| 146 | 145 |
| 147 return SkColorSetARGB(alpha, light, light, light); | 146 return SkColorSetARGB(alpha, light, light, light); |
| 148 } | 147 } |
| 149 | 148 |
| 150 double temp2 = (lightness < 0.5) ? | 149 double temp2 = (lightness < 0.5) ? |
| 151 (lightness * (1.0 + saturation)) : | 150 (lightness * (1.0 + saturation)) : |
| 152 (lightness + saturation - (lightness * saturation)); | 151 (lightness + saturation - (lightness * saturation)); |
| 153 double temp1 = 2.0 * lightness - temp2; | 152 double temp1 = 2.0 * lightness - temp2; |
| 154 return SkColorSetARGB(alpha, | 153 return SkColorSetARGB(alpha, |
| 155 calcHue(temp1, temp2, hue + 1.0 / 3.0), | 154 calcHue(temp1, temp2, hue + 1.0 / 3.0), |
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| 338 if (IsDark(text_color)) { | 337 if (IsDark(text_color)) { |
| 339 // For black text, this comes out to kChromeIconGrey. | 338 // For black text, this comes out to kChromeIconGrey. |
| 340 return color_utils::AlphaBlend(SK_ColorWHITE, text_color, | 339 return color_utils::AlphaBlend(SK_ColorWHITE, text_color, |
| 341 SkColorGetR(gfx::kChromeIconGrey)); | 340 SkColorGetR(gfx::kChromeIconGrey)); |
| 342 } | 341 } |
| 343 // The dimming is less dramatic when darkening a light color. | 342 // The dimming is less dramatic when darkening a light color. |
| 344 return color_utils::AlphaBlend(SK_ColorBLACK, text_color, 0x33); | 343 return color_utils::AlphaBlend(SK_ColorBLACK, text_color, 0x33); |
| 345 } | 344 } |
| 346 | 345 |
| 347 } // namespace color_utils | 346 } // namespace color_utils |
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