/*********
*
* This file is part of BibleTime's source code, http://www.bibletime.info/.
*
* Copyright 1999-2006 by the BibleTime developers.
* The BibleTime source code is licensed under the GNU General Public License version 2.0.
*
**********/



#ifndef CSRCOLLBUTTON_H
#define CSRCOLLBUTTON_H

#include <tqwidget.h>
#include <tqtoolbutton.h>

class TQMouseEvent;

/** This Class implements the direct chooser button used in the KeyChooser Widget
  * @author The BibleTime team
  */
class CScrollButton : public TQToolButton  {
	Q_OBJECT
public:
	/**
	* The constructor
	*/
	CScrollButton(TQWidget *parent=0, const char *name=0);
	const bool isLocked() const;

signals:
	/**
	* is emitted when the button enters locked state
	*/
	void lock()
		;
	/**
	* is emitted when the button leaves locked state
	*/
	void unlock();
	/**
	* indicates a change the user made by moving the mouse
	* @param count the number of items to be changed in the KeyChooser ComboBox
	*/
	void change_requested(int count);

protected slots:
	/*
	* used to process the button press events
	*/
	void was_pressed();
	/**
	* used to process the button release events
	*/
	void was_released();

protected:
	/**
	* Reimplementation from @ref QWidget#mouseMoveEvent - processes
	* the mouse move events
	*/
	virtual void mouseMoveEvent( TQMouseEvent* e );
	/**
	* used to find the lock point - the middle of the button
	* @return the lock point
	*/
	const TQPoint get_lock_Point() const;
	/**
	* If the wheel of the mouse is used while the mouse stays over our scrollbutton the content is
	* scrolled like the mouse was pressed and moved.
	*/
	virtual void wheelEvent( TQWheelEvent* e );

private:
	/**
	* Indicates whether the button is in locked state or not
	*/
	bool m_isLocked;
	/**
	* stores the lock point
	*/
	TQPoint lock_Point;
};

#endif