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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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66 | 66 |
67 const float kScaleFactorScales[] = {1.0f, 1.0f, 1.4f, 1.8f, 2.0f}; | 67 const float kScaleFactorScales[] = {1.0f, 1.0f, 1.4f, 1.8f, 2.0f}; |
68 COMPILE_ASSERT(NUM_SCALE_FACTORS == arraysize(kScaleFactorScales), | 68 COMPILE_ASSERT(NUM_SCALE_FACTORS == arraysize(kScaleFactorScales), |
69 kScaleFactorScales_incorrect_size); | 69 kScaleFactorScales_incorrect_size); |
70 const size_t kScaleFactorScalesLength = arraysize(kScaleFactorScales); | 70 const size_t kScaleFactorScalesLength = arraysize(kScaleFactorScales); |
71 | 71 |
72 std::vector<ScaleFactor>& GetSupportedScaleFactorsInternal() { | 72 std::vector<ScaleFactor>& GetSupportedScaleFactorsInternal() { |
73 static std::vector<ScaleFactor>* supported_scale_factors = | 73 static std::vector<ScaleFactor>* supported_scale_factors = |
74 new std::vector<ScaleFactor>(); | 74 new std::vector<ScaleFactor>(); |
75 if (supported_scale_factors->empty()) { | 75 if (supported_scale_factors->empty()) { |
76 #if !defined(OS_IOS) | 76 // 100P is always a supported scale factor. |
77 // On platforms other than iOS, 100P is always a supported scale factor. | |
78 supported_scale_factors->push_back(SCALE_FACTOR_100P); | 77 supported_scale_factors->push_back(SCALE_FACTOR_100P); |
79 #endif | |
80 | 78 |
81 #if defined(OS_IOS) | 79 #if defined(OS_IOS) |
82 // TODO(ios): 100p should not be necessary on iOS retina devices. However | 80 // TODO(ios): 100p should not be necessary on iOS retina devices. However |
83 // the sync service only supports syncing 100p favicons. Until sync supports | 81 // the sync service only supports syncing 100p favicons. Until sync supports |
84 // other scales 100p is needed in the list of scale factors to retrieve and | 82 // other scales 100p is needed in the list of scale factors to retrieve and |
85 // store the favicons in both 100p for sync and 200p for display. cr/160503. | 83 // store the favicons in both 100p for sync and 200p for display. cr/160503. |
86 gfx::Display display = gfx::Screen::GetNativeScreen()->GetPrimaryDisplay(); | 84 gfx::Display display = gfx::Screen::GetNativeScreen()->GetPrimaryDisplay(); |
87 if (display.device_scale_factor() > 1.0) { | 85 if (display.device_scale_factor() > 1.0) { |
88 DCHECK_EQ(2.0, display.device_scale_factor()); | 86 DCHECK_EQ(2.0, display.device_scale_factor()); |
89 supported_scale_factors->push_back(SCALE_FACTOR_200P); | 87 supported_scale_factors->push_back(SCALE_FACTOR_200P); |
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183 gfx::Screen* screen = gfx::Screen::GetScreenFor(view); | 181 gfx::Screen* screen = gfx::Screen::GetScreenFor(view); |
184 if (screen->IsDIPEnabled()) { | 182 if (screen->IsDIPEnabled()) { |
185 gfx::Display display = screen->GetDisplayNearestWindow(view); | 183 gfx::Display display = screen->GetDisplayNearestWindow(view); |
186 return GetScaleFactorFromScale(display.device_scale_factor()); | 184 return GetScaleFactorFromScale(display.device_scale_factor()); |
187 } | 185 } |
188 return ui::SCALE_FACTOR_100P; | 186 return ui::SCALE_FACTOR_100P; |
189 } | 187 } |
190 #endif // !defined(OS_MACOSX) | 188 #endif // !defined(OS_MACOSX) |
191 | 189 |
192 } // namespace ui | 190 } // namespace ui |
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