feat: StartLinuxDrm in Raspberry Pi.

demo/Semi.Avalonia.Demo.Drm/Program.cs

@@ -1,48 +1,43 @@
-using Avalonia;
-using Avalonia.Dialogs;
-using Avalonia.Media;
-using System;
+using System;
+using System.Globalization;
 using System.Linq;
 using System.Threading;
+using Avalonia;
 
-namespace Semi.Avalonia.Demo.Drm
-{
-    internal class Program
+namespace Semi.Avalonia.Demo.Drm;
+
+class Program
 {
     // Initialization code. Don't use any Avalonia, third-party APIs or any
     // SynchronizationContext-reliant code before AppMain is called: things aren't initialized
     // yet and stuff might break.
     [STAThread]
-        public static void Main(string[] args)
+    public static int Main(string[] args)
     {
         var builder = BuildAvaloniaApp();
-            builder.With(new FontManagerOptions
+
+        double GetScaling()
         {
-                FontFallbacks = new[]
-                {
-                new FontFallback
-                {
-                    FontFamily = new FontFamily("Microsoft YaHei")
+            var idx = Array.IndexOf(args, "--scaling");
+            if (idx != 0 && args.Length > idx + 1 &&
+                double.TryParse(args[idx + 1], NumberStyles.Any, CultureInfo.InvariantCulture, out var scaling))
+                return scaling;
+            return 1;
         }
-            }
-            });
+
         if (args.Contains("--drm"))
         {
             SilenceConsole();
-                builder.StartLinuxDrm(args: args, card: "/dev/dri/card1", scaling: 1);
-            }
-            else
-            {
-                builder.StartWithClassicDesktopLifetime(args);
+            return builder.StartLinuxDrm(args: args, card: "/dev/dri/card1", scaling: GetScaling());
         }
+
+        return builder.StartWithClassicDesktopLifetime(args);
     }
 
     // Avalonia configuration, don't remove; also used by visual designer.
     public static AppBuilder BuildAvaloniaApp()
         => AppBuilder.Configure<App>()
-                .UseManagedSystemDialogs()
             .UsePlatformDetect()
-                .With(new Win32PlatformOptions())
             .LogToTrace();
 
     private static void SilenceConsole()
@@ -56,4 +51,3 @@ namespace Semi.Avalonia.Demo.Drm
             { IsBackground = true }.Start();
     }
 }
-}