windowMenu: Do a better job with faking the source actor

The 0x0 dummyCursor works well when the menu pops up directly underneath
the pointer (e.g. when triggered by right-clicking the titlebar) or by
keyboard, but not when triggered by the menu button - the menu does not
point to the center of the button's bottom edge, and unless the user
keeps holding the mouse button while moving into the menu, the menu will
be dismissed immediately on button release.
Address these issues by using the button geometry to overlay the window
button with an appropriately sized actor that acts as a proper sourceActor,
to make the window menu behavior consistent with other shell menus.

https://bugzilla.gnome.org/show_bug.cgi?id=731058

1 files changed, 22 insertions, 9 deletions

diff --git a/js/ui/windowMenu.js b/js/ui/windowMenu.js
index f993e15a..cec044e0 100644
--- a/js/ui/windowMenu.js
+++ b/js/ui/windowMenu.js
@@ -15,8 +15,8 @@ const WindowMenu = new Lang.Class({
     Name: 'WindowMenu',
     Extends: PopupMenu.PopupMenu,
 
-    _init: function(window) {
-        this.parent(Main.layoutManager.dummyCursor, 0, St.Side.TOP);
+    _init: function(window, sourceActor) {
+        this.parent(sourceActor, 0, St.Side.TOP);
 
         this.actor.add_style_class_name('window-menu');
 
@@ -129,10 +129,10 @@ const AppMenu = new Lang.Class({
     Name: 'AppMenu',
     Extends: RemoteMenu.RemoteMenu,
 
-    _init: function(window) {
+    _init: function(window, sourceActor) {
         let app = Shell.WindowTracker.get_default().get_window_app(window);
 
-        this.parent(Main.layoutManager.dummyCursor, app.menu, app.action_group);
+        this.parent(sourceActor, app.menu, app.action_group);
 
         this.actor.add_style_class_name('fallback-app-menu');
         let variant = window.get_gtk_theme_variant();
@@ -149,11 +149,18 @@ const WindowMenuManager = new Lang.Class({
 
     _init: function() {
         this._manager = new PopupMenu.PopupMenuManager({ actor: Main.layoutManager.dummyCursor });
+
+        this._sourceActor = new St.Widget({ reactive: true, visible: false });
+        this._sourceActor.connect('button-press-event', Lang.bind(this,
+            function() {
+                this._manager.activeMenu.toggle();
+            }));
+        Main.uiGroup.add_actor(this._sourceActor);
     },
 
     showWindowMenuForWindow: function(window, type, rect) {
-        let menu = (type == Meta.WindowMenuType.WM) ? new WindowMenu(window)
-                                                    : new AppMenu(window);
+        let menuType = (type == Meta.WindowMenuType.WM) ? WindowMenu : AppMenu;
+        let menu = new menuType(window, this._sourceActor);
 
         this._manager.addMenu(menu);
 
@@ -161,12 +168,18 @@ const WindowMenuManager = new Lang.Class({
             window.check_alive(global.get_current_time());
         });
 
-        Main.layoutManager.setDummyCursorGeometry(rect.x, rect.y, 0, 0);
+        this._sourceActor.set_size(rect.width, rect.height);
+        this._sourceActor.set_position(rect.x, rect.y);
+        this._sourceActor.show();
+
         menu.open(BoxPointer.PopupAnimation.NONE);
         menu.actor.navigate_focus(null, Gtk.DirectionType.TAB_FORWARD, false);
         menu.connect('open-state-changed', Lang.bind(this, function(menu_, isOpen) {
-            if (!isOpen)
-                menu.destroy();
+            if (isOpen)
+                return;
+
+            this._sourceActor.hide();
+            menu.destroy();
         }));
     }
 });