[gtk+] Some additional auto-mnemonic fixes

[Matthias Clasen <matthiasc src gnome org>]

commit 73bf1740e9ce8a6148db403f12838c231d3f2bb6
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri May 6 14:04:50 2011 -0400

    Some additional auto-mnemonic fixes
    
    Previously, we would also show mnemonics if the user hits
    Ctrl+Alt, even though Ctrl+Alt+<x> does not actually trigger.

 gtk/gtkmain.c   |    3 +++
 gtk/gtkwindow.c |    3 +--
 2 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkmain.c b/gtk/gtkmain.c
index 9eda5a9..950c499 100644
--- a/gtk/gtkmain.c
+++ b/gtk/gtkmain.c
@@ -1840,10 +1840,13 @@ gtk_main_do_event (GdkEvent *event)
           if (gtk_invoke_key_snoopers (grab_widget, event))
             break;
         }
+
       /* Catch alt press to enable auto-mnemonics;
        * menus are handled elsewhere
+       * FIXME: this does not work with mnemonic modifiers other than Alt
        */
       if ((event->key.keyval == GDK_KEY_Alt_L || event->key.keyval == GDK_KEY_Alt_R) &&
+          ((event->key.state & (gtk_accelerator_get_default_mod_mask ()) & ~(GDK_RELEASE_MASK|GDK_MOD1_MASK)) == 0) &&
           !GTK_IS_MENU_SHELL (grab_widget))
         {
           gboolean auto_mnemonics;
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index 04cf5c9..2af5409 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -5947,8 +5947,7 @@ maybe_set_mnemonics_visible (GtkWindow *window)
 
           gdk_device_get_state (dev, gtk_widget_get_window (GTK_WIDGET (window)),
                                 NULL, &mask);
-
-          if (window->priv->mnemonic_modifier & mask)
+          if (window->priv->mnemonic_modifier == (mask & gtk_accelerator_get_default_mod_mask ()))
             {
               gtk_window_set_mnemonics_visible (window, TRUE);
               break;