Self-implement tooltip

* src/gtkutil.c (xg_create_frame_widgets): Use popup for tooltip.
* src/pgtkfns.c (unwind_create_tip_frame): Port X code.
(x_create_tip_frame): Re-port X code.
(x_hide_tip): Re-port X code.
(Fx_show_tip): Re-port X code.
(frame_geometry): Get left_pos and top_pos here.
(syms_of_pgtkfns): Add variables for tooltip.
* src/pgtkterm.c (pgtk_set_event_handler): Set event handler for tooltip.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/pgtkterm.c b/src/pgtkterm.c
index aeec3f589ff..544436e6e44 100644
--- a/src/pgtkterm.c
+++ b/src/pgtkterm.c
@@ -6369,6 +6369,13 @@ drag_data_received (GtkWidget * widget, GdkDragContext * context,
 void
 pgtk_set_event_handler (struct frame *f)
 {
+  if (f->tooltip)
+    {
+      g_signal_connect (G_OBJECT (FRAME_GTK_WIDGET (f)), "draw",
+                        G_CALLBACK (pgtk_handle_draw), NULL);
+      return;
+    }
+
   gtk_drag_dest_set (FRAME_GTK_WIDGET (f), GTK_DEST_DEFAULT_ALL, NULL, 0,
                      GDK_ACTION_COPY);
   gtk_drag_dest_add_uri_targets (FRAME_GTK_WIDGET (f));