void vik_layer_emit_update ( VikLayer *vl )
{
if ( vl->visible ) {
vik_window_set_redraw_trigger(vl);
g_signal_emit ( G_OBJECT(vl), layer_signals[VL_UPDATE_SIGNAL], 0 );
}
}
/**
* Draw specified layer
*/
void vik_layer_emit_update ( VikLayer *vl )
{
if ( vl->visible && vl->realized ) {
vik_window_set_redraw_trigger(vl);
// Only ever draw when there is time to do so
if ( g_thread_self() != vik_window_get_thread (VIK_WINDOW(VIK_GTK_WINDOW_FROM_LAYER(vl))) )
// Drawing requested from another (background) thread, so handle via the gdk thread method
gdk_threads_add_idle ( (GSourceFunc) idle_draw, vl );
else
g_idle_add ( (GSourceFunc) idle_draw, vl );
}
}
/**
* should only be done by VikLayersPanel (hence never used from the background)
* need to redraw and record trigger when we make a layer invisible.
*/
void vik_layer_emit_update_although_invisible ( VikLayer *vl )
{
vik_window_set_redraw_trigger(vl);
g_idle_add ( (GSourceFunc) idle_draw, vl );
}