/*!
	@file
	@author		Evmenov Georgiy
	@date		04/2008
*/
/*
	This file is part of MyGUI.

	MyGUI is free software: you can redistribute it and/or modify
	it under the terms of the GNU Lesser General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	MyGUI is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU Lesser General Public License for more details.

	You should have received a copy of the GNU Lesser General Public License
	along with MyGUI.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __MYGUI_CONTROLLER_EDGE_HIDE_H__
#define __MYGUI_CONTROLLER_EDGE_HIDE_H__

#include "MyGUI_Prerequest.h"
#include "MyGUI_WidgetDefines.h"
#include "MyGUI_ControllerItem.h"
#include "MyGUI_Types.h"

namespace MyGUI
{

	/** This controller used for hiding widgets near screen edges.
		Widget will start hiding(move out of screen) if it's near
		border and it and it's childrens don't have any focus. Hiding
		till only small part of widget be visible. Widget will move
		inside screen if it have any focus.
	*/
	class MYGUI_EXPORT ControllerEdgeHide :
		public ControllerItem
	{
		MYGUI_RTTI_DERIVED( ControllerEdgeHide )

	public:
		ControllerEdgeHide();
		virtual ~ControllerEdgeHide();

		/**
			@param _value in which widget will be hidden or shown
		*/
		void setTime(float _value);

		/**
			@param _value How many pixels you will see after full hide
		*/
		void setRemainPixels(int _value);

		/**
			@param _value Added to "remain pixels" when hiding left or top (for example used for windows with shadows)
		*/
		void setShadowSize(int _value);

		virtual void setProperty(const std::string& _key, const std::string& _value);

	private:
		bool addTime(Widget* _widget, float _time);
		void prepareItem(Widget* _widget);

		void recalculateTime(Widget* _widget);

		delegates::CMultiDelegate1<Widget*> eventPostAction;

		float mTime;
		int mRemainPixels;
		int mShadowSize;
		float mElapsedTime;
		// for checking if widget was moved
		MyGUI::IntCoord mLastCoord;
	};

} // namespace MyGUI

#endif // __MYGUI_CONTROLLER_EDGE_HIDE_H__