diff options
| author | TSR Berry <20988865+TSRBerry@users.noreply.github.com> | 2023-04-08 01:22:00 +0200 |
|---|---|---|
| committer | Mary <thog@protonmail.com> | 2023-04-27 23:51:14 +0200 |
| commit | cee712105850ac3385cd0091a923438167433f9f (patch) | |
| tree | 4a5274b21d8b7f938c0d0ce18736d3f2993b11b1 /src/Ryujinx.Common/SystemInterop/GdiPlusHelper.cs | |
| parent | cd124bda587ef09668a971fa1cac1c3f0cfc9f21 (diff) | |
Move solution and projects to src
Diffstat (limited to 'src/Ryujinx.Common/SystemInterop/GdiPlusHelper.cs')
| -rw-r--r-- | src/Ryujinx.Common/SystemInterop/GdiPlusHelper.cs | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/src/Ryujinx.Common/SystemInterop/GdiPlusHelper.cs b/src/Ryujinx.Common/SystemInterop/GdiPlusHelper.cs new file mode 100644 index 00000000..1001424d --- /dev/null +++ b/src/Ryujinx.Common/SystemInterop/GdiPlusHelper.cs @@ -0,0 +1,76 @@ +using System; +using System.Runtime.InteropServices; +using System.Runtime.Versioning; + +namespace Ryujinx.Common.SystemInterop +{ + [SupportedOSPlatform("windows")] + public static partial 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; + } + + [LibraryImport(LibraryName)] + private static partial int GdiplusStartup(out IntPtr token, in StartupInputEx input, out StartupOutput output); + + [LibraryImport(LibraryName)] + private static partial int GdipCreateFromHWND(IntPtr hwnd, out IntPtr graphics); + + [LibraryImport(LibraryName)] + private static partial int GdipDeleteGraphics(IntPtr graphics); + + [LibraryImport(LibraryName)] + private static partial 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; + } + } +} |