master bd321f7: Fix xwidget popups on XI2

[Po Lu]

branch: master
commit bd321f78eb8db839147a13a8543c0d3ca878f242
Author: Po Lu <luangruo@yahoo.com>
Commit: Po Lu <luangruo@yahoo.com>

    Fix xwidget popups on XI2
    
    * src/gtkutil.c (xg_is_menu_window): Determine whether wdesc
    is a menu generated by a menu bar more reliably.
    
    * src/xwidget.c (xwidget_button_1): Release all XI2 grabs on
    click.
---
 src/gtkutil.c |  6 +++++-
 src/xwidget.c | 14 ++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/gtkutil.c b/src/gtkutil.c
index 9e676cd..8f8db4e 100644
--- a/src/gtkutil.c
+++ b/src/gtkutil.c
@@ -853,7 +853,11 @@ xg_is_menu_window (Display *dpy, Window wdesc)
     {
       GtkWidget *fw = gtk_bin_get_child (GTK_BIN (gwdesc));
       if (GTK_IS_MENU (fw))
-       return true;
+       {
+         GtkWidget *parent
+           = gtk_menu_shell_get_parent_shell (GTK_MENU_SHELL (fw));
+         return GTK_IS_MENU_BAR (parent);
+       }
     }
 
   return false;
diff --git a/src/xwidget.c b/src/xwidget.c
index 5da2aa1..e07b290 100644
--- a/src/xwidget.c
+++ b/src/xwidget.c
@@ -907,6 +907,10 @@ xwidget_button_1 (struct xwidget_view *view,
   GdkEvent *xg_event = gdk_event_new (down_p ? GDK_BUTTON_PRESS : 
GDK_BUTTON_RELEASE);
   struct xwidget *model = XXWIDGET (view->model);
   GtkWidget *target;
+#ifdef HAVE_XINPUT2
+  struct x_display_info *dpyinfo;
+  struct xi_device_t *xi_device;
+#endif
 
   /* X and Y should be relative to the origin of view->wdesc.  */
   x += view->clip_left;
@@ -930,6 +934,16 @@ xwidget_button_1 (struct xwidget_view *view,
   xg_event->button.time = time;
   xg_event->button.device = find_suitable_pointer (view->frame);
 
+#ifdef HAVE_XINPUT2
+  dpyinfo = FRAME_DISPLAY_INFO (view->frame);
+  for (int idx = 0; idx < dpyinfo->num_devices; ++idx)
+    {
+      xi_device = &dpyinfo->devices[idx];
+
+      XIUngrabDevice (view->dpy, xi_device->device_id, CurrentTime);
+    }
+#endif
+
   gtk_main_do_event (xg_event);
   gdk_event_free (xg_event);
 }