Add layer shell window

DeltatuneWls/Program.cs

@@ -1,3 +1,28 @@
-// See https://aka.ms/new-console-template for more information
+using Gio;
+using Gtk;
+using ZwlrLayerShell;
+using Application = Gtk.Application;
 
-Console.WriteLine("Hello, World!");
+if (!LayerShell.IsSupported())
+{
+    Console.WriteLine("You must be running on a Wayland compositor that supports zwlr_layer_shell_v1");
+    return 255;
+}
+
+var application = Application.New("gay.pancakes.deltatune_wls", Gio.ApplicationFlags.FlagsNone);
+
+application.OnActivate += (sender, eventArgs) =>
+{
+    var window = ApplicationWindow.New((Application)sender);
+
+    LayerShell.InitForWindow(window);
+    LayerShell.SetNamespace(window, "deltatune-wls");
+    LayerShell.SetLayer(window, Layer.Top);
+    LayerShell.SetAnchor(window, Edge.Left, true);
+    LayerShell.SetAnchor(window, Edge.Top, true);
+    LayerShell.SetMargin(window, 15);
+
+    window.Present();
+};
+
+return application.RunWithSynchronizationContext(null);