#include "canvas_modulate.h"


void CanvasModulate::_notification(int p_what) {

	if (p_what==NOTIFICATION_ENTER_CANVAS) {

		if (is_visible()) {
			VS::get_singleton()->canvas_set_modulate(get_canvas(),color);
			add_to_group("_canvas_modulate_"+itos(get_canvas().get_id()));
		}



	} else if (p_what==NOTIFICATION_EXIT_CANVAS) {

		if (is_visible()) {
			VS::get_singleton()->canvas_set_modulate(get_canvas(),Color(1,1,1,1));
			remove_from_group("_canvas_modulate_"+itos(get_canvas().get_id()));
		}
	} else if (p_what==NOTIFICATION_VISIBILITY_CHANGED) {

		if (is_visible()) {
			VS::get_singleton()->canvas_set_modulate(get_canvas(),color);
			add_to_group("_canvas_modulate_"+itos(get_canvas().get_id()));
		} else {
			VS::get_singleton()->canvas_set_modulate(get_canvas(),Color(1,1,1,1));
			remove_from_group("_canvas_modulate_"+itos(get_canvas().get_id()));
		}

		update_configuration_warning();
	}
}

void CanvasModulate::_bind_methods(){

	ObjectTypeDB::bind_method(_MD("set_color","color"),&CanvasModulate::set_color);
	ObjectTypeDB::bind_method(_MD("get_color"),&CanvasModulate::get_color);

	ADD_PROPERTY(PropertyInfo(Variant::COLOR,"color"),_SCS("set_color"),_SCS("get_color"));
}


void CanvasModulate::set_color(const Color& p_color){

	color=p_color;
	if (is_inside_tree()) {
		VS::get_singleton()->canvas_set_modulate(get_canvas(),color);
	}
}
Color CanvasModulate::get_color() const {

	return color;
}

String CanvasModulate::get_configuration_warning() const {

	if (!is_visible() || !is_inside_tree())
		return String();

	List<Node*> nodes;
	get_tree()->get_nodes_in_group("_canvas_modulate_"+itos(get_canvas().get_id()),&nodes);

	if (nodes.size()>1) {
		return TTR("Only one visible CanvasModulate is allowed per scene (or set of instanced scenes). The first one created will work, while the rest will be ignored.");
	}

	return String();
}

CanvasModulate::CanvasModulate()
{
	color=Color(1,1,1,1);
}

CanvasModulate::~CanvasModulate()
{

}