Ryujinx/Ryujinx.Common/SystemInterop/ForceDpiAware.cs
Isaac Marovitz 0fbcd630bc
Replace DllImport usage with LibraryImport (#4084)
* Replace usage of `DllImport` with `LibraryImport`

* Mark methods as `partial`

* Marshalling

* More `partial` & marshalling

* More `partial` and marshalling

* More partial and marshalling

* Update GdiPlusHelper to LibraryImport

* Unicorn

* More Partial

* Marshal

* Specify EntryPoint

* Specify EntryPoint

* Change GlobalMemoryStatusEx to LibraryImport

* Change RegisterClassEx to LibraryImport

* Define EntryPoints

* Update Ryujinx.Ava/Ui/Controls/Win32NativeInterop.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Update Ryujinx.Graphics.Nvdec.FFmpeg/Native/FFmpegApi.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Move return mashal

* Remove calling convention specification

* Remove calling conventions

* Update Ryujinx.Common/SystemInfo/WindowsSystemInfo.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Update Ryujinx/Modules/Updater/Updater.cs

Co-authored-by: Mary-nyan <thog@protonmail.com>

* Update Ryujinx.Ava/Modules/Updater/Updater.cs

Co-authored-by: Mary-nyan <thog@protonmail.com>

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>
Co-authored-by: Mary-nyan <thog@protonmail.com>
2022-12-15 18:07:31 +01:00

96 lines
3.6 KiB
C#

using Ryujinx.Common.Logging;
using System;
using System.Globalization;
using System.Runtime.InteropServices;
namespace Ryujinx.Common.SystemInterop
{
public static partial class ForceDpiAware
{
[LibraryImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
private static partial bool SetProcessDPIAware();
private const string X11LibraryName = "libX11.so.6";
[LibraryImport(X11LibraryName)]
private static partial IntPtr XOpenDisplay([MarshalAs(UnmanagedType.LPStr)] string display);
[LibraryImport(X11LibraryName)]
private static partial IntPtr XGetDefault(IntPtr display, [MarshalAs(UnmanagedType.LPStr)] string program, [MarshalAs(UnmanagedType.LPStr)] string option);
[LibraryImport(X11LibraryName)]
private static partial int XDisplayWidth(IntPtr display, int screenNumber);
[LibraryImport(X11LibraryName)]
private static partial int XDisplayWidthMM(IntPtr display, int screenNumber);
[LibraryImport(X11LibraryName)]
private static partial int XCloseDisplay(IntPtr display);
private static readonly double _standardDpiScale = 96.0;
private static readonly double _maxScaleFactor = 1.25;
/// <summary>
/// Marks the application as DPI-Aware when running on the Windows operating system.
/// </summary>
public static void Windows()
{
// Make process DPI aware for proper window sizing on high-res screens.
if (OperatingSystem.IsWindowsVersionAtLeast(6))
{
SetProcessDPIAware();
}
}
public static double GetActualScaleFactor()
{
double userDpiScale = 96.0;
try
{
if (OperatingSystem.IsWindows())
{
userDpiScale = GdiPlusHelper.GetDpiX(IntPtr.Zero);
}
else if (OperatingSystem.IsLinux())
{
string xdgSessionType = Environment.GetEnvironmentVariable("XDG_SESSION_TYPE")?.ToLower();
if (xdgSessionType == null || xdgSessionType == "x11")
{
IntPtr display = XOpenDisplay(null);
string dpiString = Marshal.PtrToStringAnsi(XGetDefault(display, "Xft", "dpi"));
if (dpiString == null || !double.TryParse(dpiString, NumberStyles.Any, CultureInfo.InvariantCulture, out userDpiScale))
{
userDpiScale = (double)XDisplayWidth(display, 0) * 25.4 / (double)XDisplayWidthMM(display, 0);
}
XCloseDisplay(display);
}
else if (xdgSessionType == "wayland")
{
// TODO
Logger.Warning?.Print(LogClass.Application, $"Couldn't determine monitor DPI: Wayland not yet supported");
}
else
{
Logger.Warning?.Print(LogClass.Application, $"Couldn't determine monitor DPI: Unrecognised XDG_SESSION_TYPE: {xdgSessionType}");
}
}
}
catch (Exception e)
{
Logger.Warning?.Print(LogClass.Application, $"Couldn't determine monitor DPI: {e.Message}");
}
return userDpiScale;
}
public static double GetWindowScaleFactor()
{
double userDpiScale = GetActualScaleFactor();
return Math.Min(userDpiScale / _standardDpiScale, _maxScaleFactor);
}
}
}