mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-08-20 07:38:42 +02:00
77 lines
2.3 KiB
C#
77 lines
2.3 KiB
C#
|
using System;
|
|||
|
using System.Runtime.InteropServices;
|
|||
|
using System.Runtime.Versioning;
|
|||
|
|
|||
|
namespace Ryujinx.Common.System
|
|||
|
{
|
|||
|
[SupportedOSPlatform("windows")]
|
|||
|
public static class GdiPlusHelper
|
|||
|
{
|
|||
|
private const string LibraryName = "gdiplus.dll";
|
|||
|
|
|||
|
private static readonly IntPtr _initToken;
|
|||
|
|
|||
|
static GdiPlusHelper()
|
|||
|
{
|
|||
|
CheckStatus(GdiplusStartup(out _initToken, StartupInputEx.Default, out _));
|
|||
|
}
|
|||
|
|
|||
|
private static void CheckStatus(int gdiStatus)
|
|||
|
{
|
|||
|
if (gdiStatus != 0)
|
|||
|
{
|
|||
|
throw new Exception($"GDI Status Error: {gdiStatus}");
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
private struct StartupInputEx
|
|||
|
{
|
|||
|
public int GdiplusVersion;
|
|||
|
|
|||
|
#pragma warning disable CS0649
|
|||
|
public IntPtr DebugEventCallback;
|
|||
|
public int SuppressBackgroundThread;
|
|||
|
public int SuppressExternalCodecs;
|
|||
|
public int StartupParameters;
|
|||
|
#pragma warning restore CS0649
|
|||
|
|
|||
|
public static StartupInputEx Default => new StartupInputEx
|
|||
|
{
|
|||
|
// We assume Windows 8 and upper
|
|||
|
GdiplusVersion = 2,
|
|||
|
DebugEventCallback = IntPtr.Zero,
|
|||
|
SuppressBackgroundThread = 0,
|
|||
|
SuppressExternalCodecs = 0,
|
|||
|
StartupParameters = 0,
|
|||
|
};
|
|||
|
}
|
|||
|
|
|||
|
private struct StartupOutput
|
|||
|
{
|
|||
|
public IntPtr NotificationHook;
|
|||
|
public IntPtr NotificationUnhook;
|
|||
|
}
|
|||
|
|
|||
|
[DllImport(LibraryName)]
|
|||
|
private static extern int GdiplusStartup(out IntPtr token, in StartupInputEx input, out StartupOutput output);
|
|||
|
|
|||
|
[DllImport(LibraryName)]
|
|||
|
private static extern int GdipCreateFromHWND(IntPtr hwnd, out IntPtr graphics);
|
|||
|
|
|||
|
[DllImport(LibraryName)]
|
|||
|
private static extern int GdipDeleteGraphics(IntPtr graphics);
|
|||
|
|
|||
|
[DllImport(LibraryName)]
|
|||
|
private static extern int GdipGetDpiX(IntPtr graphics, out float dpi);
|
|||
|
|
|||
|
public static float GetDpiX(IntPtr hwnd)
|
|||
|
{
|
|||
|
CheckStatus(GdipCreateFromHWND(hwnd, out IntPtr graphicsHandle));
|
|||
|
CheckStatus(GdipGetDpiX(graphicsHandle, out float result));
|
|||
|
CheckStatus(GdipDeleteGraphics(graphicsHandle));
|
|||
|
|
|||
|
return result;
|
|||
|
}
|
|||
|
}
|
|||
|
}
|