[gnome-settings-daemon/randr-osd: 60/60] Grab the mouse and keyboard when the RANDR OSD window is mapped

[Federico Mena Quintero <federico src gnome org>]

commit b8a1b0d7dde02d76aecf9dd744699c7236e585b5
Author: Federico Mena Quintero <federico novell com>
Date:   Wed Mar 3 17:16:34 2010 -0600

    Grab the mouse and keyboard when the RANDR OSD window is mapped
    
    We need to forcibly capture input while the window is up.  We let
    the user dismiss the window by clicking outside of it.

 plugins/xrandr/gsd-xrandr-manager.c |   57 +++++++++++++++++++++++++++++++++++
 1 files changed, 57 insertions(+), 0 deletions(-)
---
diff --git a/plugins/xrandr/gsd-xrandr-manager.c b/plugins/xrandr/gsd-xrandr-manager.c
index 556a323..97526d3 100644
--- a/plugins/xrandr/gsd-xrandr-manager.c
+++ b/plugins/xrandr/gsd-xrandr-manager.c
@@ -1116,10 +1116,16 @@ static void
 destroy_osd_window (GsdXrandrManager *manager)
 {
         GsdXrandrManagerPrivate *priv = manager->priv;
+        GdkDisplay *display;
 
         if (priv->osd_window == NULL)
                 return;
 
+        display = gtk_widget_get_display (priv->osd_window);
+
+        gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
+        gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
+
         gtk_widget_destroy (priv->osd_window);
         priv->osd_window = NULL;
 }
@@ -1194,6 +1200,52 @@ make_button_for_stock_config (GsdXrandrManager *manager, StockConfigType type)
         return button;
 }
 
+static gboolean
+osd_window_map_event_cb (GtkWidget *widget, GdkEventAny *event, gpointer data)
+{
+        GsdXrandrManager *manager = data;
+        GsdXrandrManagerPrivate *priv = manager->priv;
+        GdkWindow *window;
+
+        /* Now that the OSD window is mapped, grab the mouse and keyboard so that
+         * we can forcibly take care of user input until the window is dismissed.
+         */
+
+        window = gtk_widget_get_window (priv->osd_window);
+
+        gdk_pointer_grab (window,
+                          TRUE,
+                          GDK_BUTTON_RELEASE_MASK,
+                          NULL,
+                          NULL,
+                          GDK_CURRENT_TIME);
+
+        gdk_keyboard_grab (window,
+                           TRUE,
+                           GDK_CURRENT_TIME);
+
+        return FALSE;
+}
+
+static gboolean
+osd_window_button_release_event_cb (GtkWidget *widget, GdkEventButton *event, gpointer data)
+{
+        GsdXrandrManager *manager = data;
+        GtkAllocation allocation;
+
+        /* If the mouse is outside the OSD window, then the user wants to dismiss it */
+
+        gtk_widget_get_allocation (widget, &allocation);
+
+        if (event->x < 0 || event->y < 0
+            || event->x >= allocation.width || event->y >= allocation.height) {
+                destroy_osd_window (manager);
+                return TRUE;
+        }
+
+        return FALSE;
+}
+
 static void
 create_osd_window (GsdXrandrManager *manager)
 {
@@ -1211,6 +1263,11 @@ create_osd_window (GsdXrandrManager *manager)
         gtk_window_set_focus_on_map (GTK_WINDOW (priv->osd_window), TRUE);
         gtk_window_set_position (GTK_WINDOW (priv->osd_window), GTK_WIN_POS_CENTER);
 
+        g_signal_connect (priv->osd_window, "map-event",
+                          G_CALLBACK (osd_window_map_event_cb), manager);
+        g_signal_connect (priv->osd_window, "button-release-event",
+                          G_CALLBACK (osd_window_button_release_event_cb), manager);
+
         box = gtk_hbox_new (TRUE, 12);
         gtk_container_add (GTK_CONTAINER (priv->osd_window), box);