/*
	Copyright 2006-2012 Xavier Guerrin
	This file is part of QElectroTech.
	
	QElectroTech is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 2 of the License, or
	(at your option) any later version.
	
	QElectroTech 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 General Public License for more details.
	
	You should have received a copy of the GNU General Public License
	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef ELEMENT_TEXTS_MOVER_H
#define ELEMENT_TEXTS_MOVER_H

#include <QSet>
#include <QPointF>

class QGraphicsItem;
class DiagramTextItem;
class Diagram;

/**
	This class manages the interactive movement of element text items on a
	particular diagram.
*/
class ElementTextsMover
{
	public:
		ElementTextsMover();
	private:
		ElementTextsMover(const ElementTextsMover &);
	
	public:
		bool isReady() const;
		int  beginMovement(Diagram *diagram, QGraphicsItem *driver_item = nullptr);
		void continueMovement(const QPointF &);
		void endMovement();
	
	private:
		bool m_movement_running = false;
		Diagram *m_diagram = nullptr;
		QGraphicsItem *m_movement_driver = nullptr;
		QHash <DiagramTextItem *, QPointF> m_texts_item_H;
};
#endif