/****************************************************************************
** $Id: qt/src/widgets/qslider.h   2.3.3   edited 2001-01-26 $
**
** Definition of QSlider class
**
** Created : 961019
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of the widgets module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** licenses may use this file in accordance with the Qt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
**   information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#ifndef SEEKBAR_H
#define SEEKBAR_H

#ifndef QT_H
#include "qwidget.h"
#include "qrangecontrol.h"
#endif // QT_H
#include "skin.h"
#include "skinmanager.h"


class QTimer;
struct SeekBarData;
class Skin;

class Q_EXPORT SeekBar : public QWidget, public QRangeControl
{
    Q_OBJECT
    Q_PROPERTY( int minValue READ minValue WRITE setMinValue )
    Q_PROPERTY( int maxValue READ maxValue WRITE setMaxValue )
    Q_PROPERTY( int lineStep READ lineStep WRITE setLineStep )
    Q_PROPERTY( int pageStep READ pageStep WRITE setPageStep )
    Q_PROPERTY( int value READ value WRITE setValue )
    Q_PROPERTY( bool tracking READ tracking WRITE setTracking )
    Q_PROPERTY( Orientation orientation READ orientation WRITE setOrientation )

public:
    SeekBar(Skin::PartsType type, const SkinManager *skinmgr, QWidget *parent, const char *name=0);

    virtual void	setOrientation( Orientation );
    Orientation orientation() const;
    virtual void	setTracking( bool enable );
    bool	tracking() const;
    virtual void 	setPalette( const QPalette & );
    QRect	sliderRect() const;
    QSize	sizeHint() const;
    QSizePolicy sizePolicy() const;
    QSize	minimumSizeHint() const;

    int	 minValue() const;
    int	 maxValue() const;
    void setMinValue( int );
    void setMaxValue( int );
    int	 lineStep() const;
    int	 pageStep() const;
    void setLineStep( int );
    void setPageStep( int );
    int  value() const;

public slots:
    virtual void	setValue( int );
    void	addStep();
    void	subtractStep();
    void setSkin(const Skin *);

signals:
    void	valueChanged( int value );
    void	sliderPressed();
    void	sliderMoved( int value );
    void	sliderReleased();
    void	sliderStepped( int value );

protected:
    void	resizeEvent( QResizeEvent * );
    void	paintEvent( QPaintEvent * );

    void	keyPressEvent( QKeyEvent * );
    void	mousePressEvent( QMouseEvent * );
    void	mouseReleaseEvent( QMouseEvent * );
    void	mouseMoveEvent( QMouseEvent * );
    void	wheelEvent( QWheelEvent * );
    void	focusInEvent( QFocusEvent *e );
    void	focusOutEvent( QFocusEvent *e );

    void updateMask();

    void	valueChange();
    void	rangeChange();

private slots:
    void	repeatTimeout();
	void skinPanelResized();

private:
    enum State { Idle, Dragging, TimingUp, TimingDown };

    void	init();
    int		positionFromValue( int ) const;
    int		valueFromPosition( int ) const;
    void	moveSlider( int );
    void	reallyMoveSlider( int );
    void	resetState();
    int		slideLength() const;
    int		available() const;
    int		goodPart( const QPoint& ) const;

    SeekBarData *extra;
    QTimer	*timer;
    QCOORD	sliderPos;
    int		sliderVal;
    QCOORD	clickOffset;
    State	state;
    bool	track;
    Orientation orient;
    const QPixmap     *image_;
    QPixmap background_;
    Skin::PartsType type_;
    const SkinParts *parts_;

private:	// Disabled copy constructor and operator=
#if defined(Q_DISABLE_COPY)
    SeekBar( const SeekBar & );
    SeekBar &operator=( const SeekBar & );
#endif
};

inline bool SeekBar::tracking() const
{
    return track;
}

inline SeekBar::Orientation SeekBar::orientation() const
{
    return orient;
}


#endif // SEEKBAR_H
