1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "stdafx.h" 6 7 #include <windows.h> 8 #include <wrl\implements.h> 9 #include <wrl\wrappers\corewrappers.h> 10 #include <windows.foundation.h> 11 #include <windows.graphics.display.h> 12 #include "base/win/windows_version.h" 13 #include "ui/gfx/win/dpi.h" 14 #include "winrt_utils.h" 15 16 float GetModernUIScale() { 17 if (base::win::GetVersion() >= base::win::VERSION_WIN8) { 18 Microsoft::WRL::ComPtr< 19 ABI::Windows::Graphics::Display::IDisplayPropertiesStatics> 20 display_properties; 21 if (SUCCEEDED(winrt_utils::CreateActivationFactory( 22 RuntimeClass_Windows_Graphics_Display_DisplayProperties, 23 display_properties.GetAddressOf()))) { 24 ABI::Windows::Graphics::Display::ResolutionScale resolution_scale; 25 if (SUCCEEDED(display_properties->get_ResolutionScale(&resolution_scale))) 26 return static_cast<float>(resolution_scale) / 100.0f; 27 } 28 } 29 return gfx::GetDPIScale(); 30 } 31
