remember last window size

data/com.vixalien.decibels.gschema.xml

@@ -1,5 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <schemalist gettext-domain="decibels">
 	<schema id="com.vixalien.decibels" path="/com/vixalien/decibels/">
+		<key name="last-window-size" type="(ii)">
+			<default>(-1,-1)</default>
+			<summary>Last width &amp; height of window</summary>
+			<description>The saved last size of the window (to be restored)</description>
+		</key>
 	</schema>
 </schemalist>

src/application.ts

@@ -5,6 +5,8 @@ import Gtk from "gi://Gtk?version=4.0";
 
 import { Window } from "./window.js";
 
+export const Settings = new Gio.Settings({ schema: pkg.name });
+
 export class Application extends Adw.Application {
   private window?: Window;
 
@@ -25,7 +27,7 @@ export class Application extends Adw.Application {
 
     this.add_action(quit_action);
     this.set_accels_for_action("app.quit", ["<Control>q"]);
-    
+
     this.set_accels_for_action("win.open-file", ["<Control>o"]);
 
     const show_about_action = new Gio.SimpleAction({ name: "about" });

src/window.ts

@@ -11,6 +11,7 @@ import { APEmptyState } from "./empty.js";
 import { APErrorState } from "./error.js";
 import { APPlayerState } from "./player.js";
 import { MPRIS } from "./mpris.js";
+import { Settings } from "./application.js";
 
 Gio._promisify(Gtk.FileDialog.prototype, "open", "open_finish");
 
@@ -76,6 +77,14 @@ export class Window extends Adw.ApplicationWindow {
   constructor(params?: Partial<Adw.ApplicationWindow.ConstructorProperties>) {
     super(params);
 
+    const window_size = Settings.get_value("last-window-size");
+
+    const width = window_size.get_child_value(0).get_int32();
+    const height = window_size.get_child_value(1).get_int32();
+
+    if (width > 0) this.default_width = width;
+    if (height > 0) this.default_height = height;
+
     this.stream = new APMediaStream();
 
     this.insert_action_group("player", this.stream.get_action_group());
@@ -176,4 +185,15 @@ export class Window extends Adw.ApplicationWindow {
 
     this._error.show_error(title, error);
   }
+
+  vfunc_close_request() {
+    const window_size = GLib.Variant.new("(ii)", [
+      this.get_width(),
+      this.get_height(),
+    ]);
+
+    Settings.set_value("last-window-size", window_size);
+
+    return super.vfunc_close_request();
+  }
 }