if( !center_x ) {
add_subwindow(center_x_title = new BC_Title(x, y, _("Center X:")));
add_subwindow(center_x = new GradientCenterX(plugin,
if( !center_x ) {
add_subwindow(center_x_title = new BC_Title(x, y, _("Center X:")));
add_subwindow(center_x = new GradientCenterX(plugin,