-/* Returns TRUE if a translation should be done */
-static gboolean
-gtk_widget_get_translation_to_window (GtkWidget *widget,
- GdkWindow *window,
- int *x,
- int *y)
-{
- GdkWindow *w, *widget_window;
-
- if (! gtk_widget_get_has_window (widget))
- {
- GtkAllocation allocation;
-
- gtk_widget_get_allocation (widget, &allocation);
-
- *x = -allocation.x;
- *y = -allocation.y;
- }
- else
- {
- *x = 0;
- *y = 0;
- }
-
- widget_window = gtk_widget_get_window (widget);
-
- for (w = window;
- w && w != widget_window;
- w = gdk_window_get_effective_parent (w))
- {
- gdouble px, py;
-
- gdk_window_coords_to_parent (w, *x, *y, &px, &py);
-
- *x += px;
- *y += py;
- }
-
- if (w == NULL)
- {
- *x = 0;
- *y = 0;
- return FALSE;
- }
-
- return TRUE;
-}
-
-static void
-gtk_shruler_event_to_widget_coords (GtkWidget *widget,
- GdkWindow *window,
- gdouble event_x,
- gdouble event_y,
- gint *widget_x,
- gint *widget_y)
-{
- gint tx, ty;
-
- if (gtk_widget_get_translation_to_window (widget, window, &tx, &ty))
- {
- event_x += tx;
- event_y += ty;
- }
-
- *widget_x = event_x;
- *widget_y = event_y;
-}
-
-static gboolean
-gtk_shruler_track_widget_motion_notify (GtkWidget *widget,
- GdkEventMotion *mevent,
- GtkSHRuler *ruler)
-{
- gint widget_x;
- gint widget_y;
- gint ruler_x;
- gint ruler_y;
-
- widget = gtk_get_event_widget ((GdkEvent *) mevent);
-
- gtk_shruler_event_to_widget_coords (widget, mevent->window,
- mevent->x, mevent->y,
- &widget_x, &widget_y);
-
- if (gtk_widget_translate_coordinates (widget, GTK_WIDGET (ruler),
- widget_x, widget_y,
- &ruler_x, &ruler_y))
- {
- gtk_shruler_update_position (ruler, ruler_x, ruler_y);
- }
-
- return FALSE;
-}
-
-/**
- * gtk_shruler_add_track_widget:
- * @ruler: a #GtkSHRuler
- * @widget: the track widget to add
- *
- * Adds a "track widget" to the ruler. The ruler will connect to
- * GtkWidget:motion-notify-event: on the track widget and update its
- * position marker accordingly. The marker is correctly updated also
- * for the track widget's children, regardless of whether they are
- * ordinary children of off-screen children.
- *
- * Since: GTK 2.8
- */
-void
-gtk_shruler_add_track_widget (GtkSHRuler *ruler,
- GtkWidget *widget)
-{
- GtkSHRulerPrivate *priv;
-
- g_return_if_fail (GTK_IS_SHRULER (ruler));
- g_return_if_fail (GTK_IS_WIDGET (ruler));
-
- priv = GTK_SHRULER_GET_PRIVATE (ruler);
-
- g_return_if_fail (g_list_find (priv->track_widgets, widget) == NULL);
-
- priv->track_widgets = g_list_prepend (priv->track_widgets, widget);
-
- g_signal_connect (widget, "motion-notify-event",
- G_CALLBACK (gtk_shruler_track_widget_motion_notify),
- ruler);
- g_signal_connect_swapped (widget, "destroy",
- G_CALLBACK (gtk_shruler_remove_track_widget),
- ruler);
-}
-
-/**
- * gtk_shruler_remove_track_widget:
- * @ruler: a #GtkSHRuler
- * @widget: the track widget to remove
- *
- * Removes a previously added track widget from the ruler. See
- * gtk_shruler_add_track_widget().
- *
- * Since: GTK 2.8
- */
-void
-gtk_shruler_remove_track_widget (GtkSHRuler *ruler,
- GtkWidget *widget)
-{
- GtkSHRulerPrivate *priv;
-
- g_return_if_fail (GTK_IS_SHRULER (ruler));
- g_return_if_fail (GTK_IS_WIDGET (ruler));
-
- priv = GTK_SHRULER_GET_PRIVATE (ruler);
-
- g_return_if_fail (g_list_find (priv->track_widgets, widget) != NULL);
-
- priv->track_widgets = g_list_remove (priv->track_widgets, widget);
-
- g_signal_handlers_disconnect_by_func (widget,
- gtk_shruler_track_widget_motion_notify,
- ruler);
- g_signal_handlers_disconnect_by_func (widget,
- gtk_shruler_remove_track_widget,
- ruler);
-}
-