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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/base/layout.h" | 5 #include "ui/base/layout.h" |
| 6 | 6 |
| 7 #include <algorithm> | 7 #include <algorithm> |
| 8 #include <cmath> | 8 #include <cmath> |
| 9 #include <limits> | 9 #include <limits> |
| 10 | 10 |
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| 59 } else if (switch_value != switches::kTouchOptimizedUIAuto) { | 59 } else if (switch_value != switches::kTouchOptimizedUIAuto) { |
| 60 LOG(ERROR) << "Invalid --touch-optimized-ui option: " << switch_value; | 60 LOG(ERROR) << "Invalid --touch-optimized-ui option: " << switch_value; |
| 61 } | 61 } |
| 62 } | 62 } |
| 63 | 63 |
| 64 // We use the touch layout only when we are running in Metro mode. | 64 // We use the touch layout only when we are running in Metro mode. |
| 65 return base::win::IsMetroProcess() && ui::IsTouchDevicePresent(); | 65 return base::win::IsMetroProcess() && ui::IsTouchDevicePresent(); |
| 66 } | 66 } |
| 67 #endif // defined(OS_WIN) | 67 #endif // defined(OS_WIN) |
| 68 | 68 |
| 69 const float kScaleFactorScales[] = {1.0f, 1.0f, 1.33f, 1.4f, 1.5f, 1.8f, 2.0f}; | 69 const float kScaleFactorScales[] = {1.0f, 1.0f, 1.25f, 1.33f, 1.4f, 1.5f, 1.8f, |
| 70 2.0f}; |
| 70 COMPILE_ASSERT(NUM_SCALE_FACTORS == arraysize(kScaleFactorScales), | 71 COMPILE_ASSERT(NUM_SCALE_FACTORS == arraysize(kScaleFactorScales), |
| 71 kScaleFactorScales_incorrect_size); | 72 kScaleFactorScales_incorrect_size); |
| 72 const size_t kScaleFactorScalesLength = arraysize(kScaleFactorScales); | 73 const size_t kScaleFactorScalesLength = arraysize(kScaleFactorScales); |
| 73 | 74 |
| 74 namespace { | 75 namespace { |
| 75 | 76 |
| 76 // Returns the scale factor closest to |scale| from the full list of factors. | 77 // Returns the scale factor closest to |scale| from the full list of factors. |
| 77 // Note that it does NOT rely on the list of supported scale factors. | 78 // Note that it does NOT rely on the list of supported scale factors. |
| 78 // Finding the closest match is inefficient and shouldn't be done frequently. | 79 // Finding the closest match is inefficient and shouldn't be done frequently. |
| 79 ScaleFactor FindClosestScaleFactorUnsafe(float scale) { | 80 ScaleFactor FindClosestScaleFactorUnsafe(float scale) { |
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| 217 gfx::Screen* screen = gfx::Screen::GetScreenFor(view); | 218 gfx::Screen* screen = gfx::Screen::GetScreenFor(view); |
| 218 if (screen->IsDIPEnabled()) { | 219 if (screen->IsDIPEnabled()) { |
| 219 gfx::Display display = screen->GetDisplayNearestWindow(view); | 220 gfx::Display display = screen->GetDisplayNearestWindow(view); |
| 220 return GetScaleFactorFromScale(display.device_scale_factor()); | 221 return GetScaleFactorFromScale(display.device_scale_factor()); |
| 221 } | 222 } |
| 222 return ui::SCALE_FACTOR_100P; | 223 return ui::SCALE_FACTOR_100P; |
| 223 } | 224 } |
| 224 #endif // !defined(OS_MACOSX) | 225 #endif // !defined(OS_MACOSX) |
| 225 | 226 |
| 226 } // namespace ui | 227 } // namespace ui |
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