add drag area and close button to settings view

Author: T0jan

kintree/gui/views/settings.py

@@ -306,7 +306,8 @@
 
 # Settings AppBar
 settings_appbar = ft.AppBar(
-    title=ft.Text('Ki-nTree Settings'),
+    title=ft.WindowDragArea(ft.Container(ft.Text('Ki-nTree Settings'),
+                                         width=10000), maximizable=True),
     bgcolor=ft.colors.SURFACE_VARIANT
 )
 
@@ -374,6 +375,15 @@ def __init__(self, page: ft.Page):
 
         # Init view
         super().__init__(page=page, appbar=settings_appbar, navigation_rail=settings_navrail)
+        if not self.appbar.actions:
+            self.appbar.actions.extend(
+                [
+                    ft.IconButton(
+                        ft.icons.CLOSE,
+                        on_click=lambda _: page.window.close(),
+                    ),
+                ]
+            )
 
         # Update navigation rail
         self.navigation_rail.on_change = self.nav_rail_redirect