+
+static gboolean
+ev_tooltip_recently_shown (EvTooltip *tooltip)
+{
+ GTimeVal now;
+ glong msec;
+
+ g_get_current_time (&now);
+
+ msec = (now.tv_sec - tooltip->priv->last_deactivate.tv_sec) * 1000 +
+ (now.tv_usec - tooltip->priv->last_deactivate.tv_usec) / 1000;
+
+ return (msec < STICKY_REVERT_DELAY);
+}
+
+static gint
+ev_tooltip_timeout (gpointer data)
+{
+ GtkWidget *tooltip = GTK_WIDGET (data);
+
+ gtk_widget_show (tooltip);
+
+ return FALSE;
+}
+
+void
+ev_tooltip_activate (EvTooltip *tooltip)
+{
+ int delay;
+
+ if (tooltip->priv->active) {
+ return;
+ } else {
+ tooltip->priv->active = TRUE;
+ }
+
+ if (ev_tooltip_recently_shown (tooltip)) {
+ delay = STICKY_DELAY;
+ } else {
+ delay = DEFAULT_DELAY;
+ }
+
+ tooltip->priv->timer_tag = g_timeout_add (delay, ev_tooltip_timeout,
+ (gpointer)tooltip);
+}
+
+void
+ev_tooltip_deactivate (EvTooltip *tooltip)
+{
+ if (!tooltip->priv->active) {
+ return;
+ } else {
+ tooltip->priv->active = FALSE;
+ }
+
+ if (tooltip->priv->timer_tag) {
+ g_source_remove (tooltip->priv->timer_tag);
+ tooltip->priv->timer_tag = 0;
+ }
+
+ gtk_widget_hide (GTK_WIDGET (tooltip));
+
+ g_get_current_time (&tooltip->priv->last_deactivate);
+}