76 lines
2 KiB
C#
76 lines
2 KiB
C#
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using Avalonia;
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using System;
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using System.Runtime.InteropServices;
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using static Ryujinx.Ava.Ui.Backend.Interop;
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namespace Ryujinx.Ava.Ui.Backend
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{
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public abstract class BackendSurface : IDisposable
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{
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protected IntPtr Display => _display;
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private IntPtr _display = IntPtr.Zero;
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[DllImport("libX11.so.6")]
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public static extern IntPtr XOpenDisplay(IntPtr display);
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[DllImport("libX11.so.6")]
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public static extern int XCloseDisplay(IntPtr display);
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private PixelSize _currentSize;
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public IntPtr Handle { get; protected set; }
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public bool IsDisposed { get; private set; }
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public BackendSurface(IntPtr handle)
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{
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Handle = handle;
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if (OperatingSystem.IsLinux())
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{
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_display = XOpenDisplay(IntPtr.Zero);
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}
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}
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public PixelSize Size
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{
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get
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{
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PixelSize size = new PixelSize();
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if (OperatingSystem.IsWindows())
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{
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GetClientRect(Handle, out var rect);
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size = new PixelSize(rect.right, rect.bottom);
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}
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else if (OperatingSystem.IsLinux())
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{
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XWindowAttributes attributes = new XWindowAttributes();
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XGetWindowAttributes(Display, Handle, ref attributes);
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size = new PixelSize(attributes.width, attributes.height);
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}
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_currentSize = size;
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return size;
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}
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}
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public PixelSize CurrentSize => _currentSize;
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public virtual void Dispose()
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{
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if (IsDisposed)
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{
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throw new ObjectDisposedException(nameof(BackendSurface));
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}
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IsDisposed = true;
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if (_display != IntPtr.Zero)
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{
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XCloseDisplay(_display);
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}
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}
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}
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}
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