trace-graph: Clear out event info window when leaving drawing

When the pointer leaves the drawing area, sometimes the event info box
would stay hanging around. This looks messy, so remove it when the
pointer leaves the drawing area.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 14 insertions, 1 deletions

diff --git a/trace-graph.c b/trace-graph.c
index fe2ecb4..4a65fb5 100644
--- a/trace-graph.c
+++ b/trace-graph.c
@@ -1196,6 +1196,16 @@ button_release_event(GtkWidget *widget, GdkEventMotion *event, gpointer data)
         return TRUE;
 }
 
+static gboolean
+leave_notify_event(GtkWidget *widget, GdkEventCrossing *event, gpointer data)
+{
+        struct graph_info *ginfo = data;
+
+        update_with_backend(ginfo, ginfo->cpu_data_x, ginfo->cpu_data_y,
+                            ginfo->cpu_data_w, ginfo->cpu_data_h);
+        return FALSE;
+}
+
 static gint hash_pid(gint val)
 {
         /* idle always gets black */
@@ -1957,6 +1967,8 @@ trace_graph_create_with_callbacks(struct tracecmd_input *handle,
                            (GtkSignalFunc) motion_notify_event, ginfo);
         gtk_signal_connect(GTK_OBJECT(ginfo->draw), "button_release_event",
                            (GtkSignalFunc) button_release_event, ginfo);
+        gtk_signal_connect(GTK_OBJECT(ginfo->draw), "leave-notify-event",
+                           (GtkSignalFunc) leave_notify_event, ginfo);
         gtk_signal_connect(GTK_OBJECT(ginfo->draw), "destroy",
                            (GtkSignalFunc) destroy_event, ginfo);
 
@@ -1965,7 +1977,8 @@ trace_graph_create_with_callbacks(struct tracecmd_input *handle,
                               | GDK_BUTTON_PRESS_MASK
                               | GDK_BUTTON_RELEASE_MASK
                               | GDK_POINTER_MOTION_MASK
-                              | GDK_POINTER_MOTION_HINT_MASK);
+                              | GDK_POINTER_MOTION_HINT_MASK
+                              | GDK_LEAVE_NOTIFY_MASK);
 
 
         gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(ginfo->scrollwin),