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/****************************************************************************

** This file is part of the taborca project hosted at

** sf.net/projects/taborca

** Copyright (C) 2013 Shawn Rutledge

** Contact: s@ecloud.org

**

** This program 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.

**

** This program 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 this program in a file called LICENSE; if not, write to the

** Free Software Foundation, Inc.,

** 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

****************************************************************************/

#ifndef RECTANGLE_H

#define RECTANGLE_H



#include <QGraphicsRectItem>



/**

	\brief A type of PDF annotation: a rectangular region selected

	for further processing (for example, OCR).



	It can be dragged to size, moved around, selected,

	and later resized by dragging the corner handles.

*/

class Rectangle : public QGraphicsRectItem

{

public:

	Rectangle(qreal x, qreal y, qreal width, qreal height,

				QGraphicsItem * parent = 0);



	enum { Type = UserType + 1 };

	int type() const { return Type; }



	enum ResizeHandleIdx {

		RH_NONE,

		RH_TOP_LEFT,

		RH_TOP_RIGHT,

		RH_BOTTOM_RIGHT,

		RH_BOTTOM_LEFT	 };



	ResizeHandleIdx handleAt(QPointF pos);



	void startResize();



	void resize(ResizeHandleIdx hidx, QPointF pos);



	void rotate(bool clockwise);



	int handleWidth();



	double actualWidth();

	double actualHeight();



	QRectF boundingRect () const;



	void resizeDone();



	/**

		Inform this item that the mouse was clicked at the given position.

		Will remember buttonDownPos in its own coord system for later use

		while dragging.

	*/

	void buttonDown(QPointF scenePos);

	QPointF buttonDownPos() { return m_buttonDownPos; };



	/**

		If selected, overlay the resize handle images.

	*/

	void paint ( QPainter * painter, const QStyleOptionGraphicsItem * option,

				 QWidget * widget = 0 );



protected:

	virtual QRectF innerBoundingRect () const;



protected:



	/**

		Last position given to buttonDown(), mapped to item coord system.

	*/

	QPointF m_buttonDownPos;

	static QPixmap* resizeHandle;

};



#endif // RECTANGLE_H