Add setting.

doc/help/settings.asciidoc

@@ -47,6 +47,7 @@
 |<<ui-window-title-format,window-title-format>>|The format to use for the window title. The following placeholders are defined:
 |<<ui-hide-mouse-cursor,hide-mouse-cursor>>|Whether to hide the mouse cursor.
 |<<ui-modal-js-dialog,modal-js-dialog>>|Use standard JavaScript modal dialog for alert() and confirm()
+|<<ui-hide-wayland-decoration,hide-wayland-decoration>>|Hide the window decoration when using wayland (requires restart)
 |==============
 
 .Quick reference for section ``network''
@@ -630,6 +631,17 @@ Valid values:
 
 Default: +pass:[false]+
 
+[[ui-hide-wayland-decoration]]
+=== hide-wayland-decoration
+Hide the window decoration when using wayland (requires restart)
+
+Valid values:
+
+ * +true+
+ * +false+
+
+Default: +pass:[false]+
+
 == network
 Settings related to the network.
 

qutebrowser/app.py

@@ -418,7 +418,8 @@ def _init_modules(args, crash_handler):
     log.init.debug("Initializing completions...")
     completionmodels.init()
     log.init.debug("Misc initialization...")
-    os.environ['QT_WAYLAND_DISABLE_WINDOWDECORATION'] = '1'
+    if config.get('ui', 'hide-wayland-decoration'):
+        os.environ['QT_WAYLAND_DISABLE_WINDOWDECORATION'] = '1'
     _maybe_hide_mouse_cursor()
     objreg.get('config').changed.connect(_maybe_hide_mouse_cursor)
 

qutebrowser/config/configdata.py

@@ -318,6 +318,11 @@ def data(readonly=False):
              SettingValue(typ.Bool(), 'false'),
              "Use standard JavaScript modal dialog for alert() and confirm()"),
 
+            ('hide-wayland-decoration',
+             SettingValue(typ.Bool(), 'false'),
+             "Hide the window decoration when using wayland "
+             "(requires restart)"),
+
             readonly=readonly
         )),