quickSettings: Split menu toggle

Menu toggles are currently regular toggles with an additional
arrow button. This allows for a simpler implementation, but
has downsides with regards to keyboard navigation and hover
feedback.

To make it more obvious that the two parts of the menu toggle
perform different actions, change the overall structure of the
toggle to *contain* a regular toggle and the menu button.

That way each element uses its own hover effect, and shows up
in the keynav focus chain.

https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/5964

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2632>

data/theme/gnome-shell-sass/widgets/_quick-settings.scss

@@ -12,13 +12,15 @@
   spacing-columns: $base_padding*2;
 }
 
-.quick-toggle {
+.quick-toggle, .quick-menu-toggle {
   border-radius: 99px;
   min-width: 12em;
   max-width: 12em;
   min-height: 48px;
   border:none;
+}
 
+.quick-toggle {
   &:checked { @include button(default, $c:$selected_bg_color); }
 
   & > StBoxLayout { spacing: $base_padding*1.5; }
@@ -37,16 +39,26 @@
     font-size: 12px;
   }
 
-  .quick-toggle-icon, .quick-toggle-arrow { icon-size: $base_icon_size; }
+  .quick-toggle-icon { icon-size: $base_icon_size; }
 }
 
 .quick-menu-toggle {
-  &:ltr > StBoxLayout { padding-right: 0; }
-  &:rtl > StBoxLayout { padding-left: 0; }
+  & .quick-toggle {
+    min-width: auto;
+    max-width: auto;
+
+    &:ltr { border-radius: 99px 0 0 99px; }
+    &:rtl { border-radius: 0 99px 99px 0; }
+
+    &:ltr:last-child { border-radius: 99px; }
+    &:rtl:last-child { border-radius: 99px; }
+  }
 
   & .quick-toggle-arrow {
-    background-color: transparentize($fg_color, 0.9);
     padding: $base_padding $base_padding*1.75;
+    border: none;
+
+    &:checked { @include button(default, $c:$selected_bg_color); }
 
     &:ltr { border-radius: 0 99px 99px 0; }
     &:rtl { border-radius: 99px 0 0 99px; }

js/ui/quickSettings.js

@@ -10,6 +10,8 @@ const {PopupAnimation} = imports.ui.boxpointer;
 const DIM_BRIGHTNESS = -0.4;
 const POPUP_ANIMATION_TIME = 400;
 
+const MENU_BUTTON_BRIGHTNESS = 0.1;
+
 var QuickSettingsItem = GObject.registerClass({
     Properties: {
         'has-menu': GObject.ParamSpec.boolean(
@@ -130,12 +132,22 @@ var QuickToggle = GObject.registerClass({
 
 var QuickMenuToggle = GObject.registerClass({
     Properties: {
+        'title': GObject.ParamSpec.string('title', '', '',
+            GObject.ParamFlags.READWRITE,
+            null),
+        'subtitle': GObject.ParamSpec.string('subtitle', '', '',
+            GObject.ParamFlags.READWRITE,
+            null),
+        'icon-name': GObject.ParamSpec.override('icon-name', St.Button),
+        'gicon': GObject.ParamSpec.object('gicon', '', '',
+            GObject.ParamFlags.READWRITE,
+            Gio.Icon),
         'menu-enabled': GObject.ParamSpec.boolean(
             'menu-enabled', '', '',
             GObject.ParamFlags.READWRITE,
             true),
     },
-}, class QuickMenuToggle extends QuickToggle {
+}, class QuickMenuToggle extends QuickSettingsItem {
     _init(params) {
         super._init({
             ...params,
@@ -144,23 +156,59 @@ var QuickMenuToggle = GObject.registerClass({
 
         this.add_style_class_name('quick-menu-toggle');
 
+        this._box = new St.BoxLayout();
+        this.set_child(this._box);
+
+        const contents = new QuickToggle({
+            x_expand: true,
+        });
+        this._box.add_child(contents);
+
+        // Use an effect to lighten the menu button a bit, so we don't
+        // have to define two full sets of button styles (normal/default)
+        // with slightly different colors
+        const menuHighlight = new Clutter.BrightnessContrastEffect();
+        menuHighlight.set_brightness(MENU_BUTTON_BRIGHTNESS);
+
         this._menuButton = new St.Button({
-            child: new St.Icon({
-                style_class: 'quick-toggle-arrow',
-                icon_name: 'go-next-symbolic',
-            }),
+            style_class: 'quick-toggle-arrow icon-button',
+            child: new St.Icon({icon_name: 'go-next-symbolic'}),
+            accessible_name: _('Open menu'),
+            effect: menuHighlight,
+            can_focus: true,
             x_expand: false,
             y_expand: true,
         });
         this._box.add_child(this._menuButton);
 
+        this.bind_property('checked',
+            contents, 'checked',
+            GObject.BindingFlags.SYNC_CREATE);
+        this.bind_property('title',
+            contents, 'title',
+            GObject.BindingFlags.SYNC_CREATE);
+        this.bind_property('subtitle',
+            contents, 'subtitle',
+            GObject.BindingFlags.SYNC_CREATE);
+        this.bind_property('icon-name',
+            contents, 'icon-name',
+            GObject.BindingFlags.SYNC_CREATE);
+        this.bind_property('gicon',
+            contents, 'gicon',
+            GObject.BindingFlags.SYNC_CREATE);
+
         this.bind_property('menu-enabled',
             this._menuButton, 'visible',
             GObject.BindingFlags.SYNC_CREATE);
         this.bind_property('reactive',
             this._menuButton, 'reactive',
             GObject.BindingFlags.SYNC_CREATE);
+        this.bind_property('checked',
+            this._menuButton, 'checked',
+            GObject.BindingFlags.SYNC_CREATE);
         this._menuButton.connect('clicked', () => this.menu.open());
+        this._menuButton.connect('popup-menu', () => this.emit('popup-menu'));
+        contents.connect('popup-menu', () => this.emit('popup-menu'));
         this.connect('popup-menu', () => {
             if (this.menuEnabled)
                 this.menu.open();

po/POTFILES.in

@@ -48,6 +48,7 @@ js/ui/overview.js
 js/ui/padOsd.js
 js/ui/panel.js
 js/ui/popupMenu.js
+js/ui/quickSettings.js
 js/ui/runDialog.js
 js/ui/screenShield.js
 js/ui/screenshot.js