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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/display/win/screen_win.h" | 5 #include "ui/display/win/screen_win.h" |
| 6 | 6 |
| 7 #include <windows.h> | 7 #include <windows.h> |
| 8 #include <shellscalingapi.h> | 8 #include <shellscalingapi.h> |
| 9 | 9 |
| 10 #include <algorithm> | 10 #include <algorithm> |
| 11 | 11 |
| 12 #include "base/bind.h" | 12 #include "base/bind.h" |
| 13 #include "base/bind_helpers.h" | 13 #include "base/bind_helpers.h" |
| 14 #include "base/metrics/histogram_macros.h" | 14 #include "base/metrics/histogram_macros.h" |
| 15 #include "base/stl_util.h" |
| 15 #include "base/win/win_util.h" | 16 #include "base/win/win_util.h" |
| 16 #include "ui/display/display.h" | 17 #include "ui/display/display.h" |
| 17 #include "ui/display/display_layout.h" | 18 #include "ui/display/display_layout.h" |
| 18 #include "ui/display/display_layout_builder.h" | 19 #include "ui/display/display_layout_builder.h" |
| 19 #include "ui/display/win/display_info.h" | 20 #include "ui/display/win/display_info.h" |
| 20 #include "ui/display/win/dpi.h" | 21 #include "ui/display/win/dpi.h" |
| 21 #include "ui/display/win/scaling_util.h" | 22 #include "ui/display/win/scaling_util.h" |
| 22 #include "ui/display/win/screen_win_display.h" | 23 #include "ui/display/win/screen_win_display.h" |
| 23 #include "ui/gfx/geometry/point.h" | 24 #include "ui/gfx/geometry/point.h" |
| 24 #include "ui/gfx/geometry/rect.h" | 25 #include "ui/gfx/geometry/rect.h" |
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| 583 | 584 |
| 584 void ScreenWin::RecordDisplayScaleFactors() const { | 585 void ScreenWin::RecordDisplayScaleFactors() const { |
| 585 std::vector<int> unique_scale_factors; | 586 std::vector<int> unique_scale_factors; |
| 586 for (const auto& screen_win_display : screen_win_displays_) { | 587 for (const auto& screen_win_display : screen_win_displays_) { |
| 587 const float scale_factor = | 588 const float scale_factor = |
| 588 screen_win_display.display().device_scale_factor(); | 589 screen_win_display.display().device_scale_factor(); |
| 589 // Multiply the reported value by 100 to display it as a percentage. Clamp | 590 // Multiply the reported value by 100 to display it as a percentage. Clamp |
| 590 // it so that if it's wildly out-of-band we won't send it to the backend. | 591 // it so that if it's wildly out-of-band we won't send it to the backend. |
| 591 const int reported_scale = std::min( | 592 const int reported_scale = std::min( |
| 592 std::max(base::checked_cast<int>(scale_factor * 100), 0), 1000); | 593 std::max(base::checked_cast<int>(scale_factor * 100), 0), 1000); |
| 593 if (std::find(unique_scale_factors.begin(), unique_scale_factors.end(), | 594 if (!base::ContainsValue(unique_scale_factors, reported_scale)) { |
| 594 reported_scale) == unique_scale_factors.end()) { | |
| 595 unique_scale_factors.push_back(reported_scale); | 595 unique_scale_factors.push_back(reported_scale); |
| 596 UMA_HISTOGRAM_SPARSE_SLOWLY("UI.DeviceScale", reported_scale); | 596 UMA_HISTOGRAM_SPARSE_SLOWLY("UI.DeviceScale", reported_scale); |
| 597 } | 597 } |
| 598 } | 598 } |
| 599 } | 599 } |
| 600 | 600 |
| 601 } // namespace win | 601 } // namespace win |
| 602 } // namespace display | 602 } // namespace display |
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