qheader.h

/****************************************************************************
** $Id: qheader.h,v 2.34 1999/06/02 23:35:21 ettrich Exp $
**
** Definition of QHeader widget class (table header)
**
** Created : 961105
**
** Copyright (C) 1992-1999 Troll Tech AS.  All rights reserved.
**
** This file is part of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Troll Tech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** Licensees holding valid Qt Professional Edition licenses may use this
** file in accordance with the Qt Professional Edition License Agreement
** provided with the Qt Professional Edition.
**
** See http://www.troll.no/pricing.html or email sales@troll.no for
** information about the Professional Edition licensing, or see
** http://www.troll.no/qpl/ for QPL licensing information.
**
*****************************************************************************/

#ifndef QHEADER_H
#define QHEADER_H

#ifndef QT_H
#include "qwidget.h"
#include "qstring.h"
#include "qiconset.h"
#endif // QT_H

struct QHeaderData;

class Q_EXPORT QHeader : public QWidget
{
    Q_OBJECT
public:
    QHeader( QWidget *parent=0, const char *name=0 );
    QHeader( int, QWidget *parent=0, const char *name=0 );
    ~QHeader();

    int         addLabel( const QString &, int size = -1 );
    int         addLabel( const QIconSet&, const QString &, int size = -1 );
    virtual void setLabel( int, const QString &, int size = -1 );
    virtual void setLabel( int, const QIconSet&, const QString &, int size = -1 );
    QString     label( int ) const;
    QIconSet*   iconSet( int ) const;
    virtual void setOrientation( Orientation );
    Orientation orientation() const;
    virtual void setTracking( bool enable );
    bool        tracking() const;

    virtual void setClickEnabled( bool, int logIdx = -1 );
    virtual void setResizeEnabled( bool, int logIdx = -1 );
    virtual void setMovingEnabled( bool );

    virtual void setCellSize( int i, int s );
    int         cellSize( int i ) const;
    int         cellPos( int i ) const;
    int         cellAt( int i ) const;
    int         count() const;

    int         offset() const;

    QSize       sizeHint() const;
    QSizePolicy sizePolicy() const;

    int         mapToLogical( int ) const;
    int         mapToActual( int ) const;

    virtual void moveCell( int fromIdx, int toIdx );

public slots:
    virtual void        setOffset( int );

signals:
    void        sectionClicked( int );
    void        sizeChange( int section, int oldSize, int newSize );
    void        moved( int from, int to );

protected:
    void        paintEvent( QPaintEvent * );
    QRect       sRect( int i );

    void        paintSection( QPainter *, int, QRect );

    void        mousePressEvent( QMouseEvent * );
    void        mouseReleaseEvent( QMouseEvent * );
    void        mouseMoveEvent( QMouseEvent * );

private:
    void        init( int );

    void        paintRect( int p, int s );
    void        markLine( int idx );
    void        unMarkLine( int idx );
    int         pPos( int i ) const;
    int         pSize( int i ) const;
    int         pHeight( int i ) const;

    int         findLine( int );

    void        handleColumnResize(int, int, bool);

    int         offs;
    int         handleIdx;
    int         oldHIdxSize;
    int         moveToIdx;
    enum State { Idle, Sliding, Pressed, Moving, Blocked };
    State       state;
    QCOORD      clickPos;
    bool        trackingIsOn;
    int       cachedIdx;
    int cachedPos;
    Orientation orient;

    QHeaderData *data;

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


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

inline void QHeader::setTracking( bool enable ) { trackingIsOn = enable; }
inline bool QHeader::tracking() const { return trackingIsOn; }

#endif //QHEADER_H