Update tooltip only when mouse is over the applet

This can prevent problems with OpenGL on some drivers. The problem is
described here: https://github.com/mate-desktop/mate-panel/issues/397

This also updates all sensors when mouse enters the applet to get
updated values.

1 files changed, 26 insertions, 0 deletions

diff --git a/sensors-applet/sensors-applet.c b/sensors-applet/sensors-applet.c
index 5649fc1..b4f58cc 100644
--- a/sensors-applet/sensors-applet.c
+++ b/sensors-applet/sensors-applet.c
@@ -217,6 +217,25 @@ static void style_set_cb(GtkWidget *widget,
             
 }
 
+static gboolean mouse_enter_cb(GtkWidget *widget,
+                               GdkEventCrossing *event,
+                               gpointer data)
+{
+        SensorsApplet *sensor_applet = data;
+        sensor_applet->show_tooltip = TRUE;
+        sensors_applet_update_active_sensors(sensor_applet);
+        return TRUE;
+}
+
+static gboolean mouse_leave_cb(GtkWidget *widget,
+                               GdkEventCrossing *event,
+                               gpointer data)
+{
+        SensorsApplet *sensor_applet = data;
+        sensor_applet->show_tooltip = FALSE;
+        return TRUE;
+}
+
 static const GtkActionEntry sensors_applet_menu_actions[] = {
 	{ "Preferences", GTK_STOCK_PROPERTIES, N_("_Preferences"),
 		NULL, NULL,
@@ -1372,6 +1391,13 @@ void sensors_applet_init(SensorsApplet *sensors_applet) {
                           G_CALLBACK(size_allocate_cb), 
                           sensors_applet);
 
+        g_signal_connect(G_OBJECT(sensors_applet->applet), "leave_notify_event",
+                         G_CALLBACK(mouse_leave_cb),
+                         (gpointer)sensors_applet);
+
+        g_signal_connect(G_OBJECT(sensors_applet->applet), "enter_notify_event",
+                         G_CALLBACK(mouse_enter_cb),
+                         (gpointer)sensors_applet);
 
 
 	sensors_applet_update_active_sensors(sensors_applet);