qmultilinedit.h

/**********************************************************************
** $Id: qmultilinedit.h,v 2.38 1998/07/03 00:09:51 hanord Exp $
**
** Definition of QMultiLineEdit widget class
**
** Created : 961005
**
** Copyright (C) 1992-1998 Troll Tech AS.  All rights reserved.
**
** This file is part of Qt Free Edition, version 1.40.
**
** See the file LICENSE included in the distribution for the usage
** and distribution terms, or http://www.troll.no/free-license.html.
**
** IMPORTANT NOTE: You may NOT copy this file or any part of it into
** your own programs or libraries.
**
** Please see http://www.troll.no/pricing.html for information about 
** Qt Professional Edition, which is this same library but with a
** license which allows creation of commercial/proprietary software.
**
*****************************************************************************/

#ifndef QMULTILINEDIT_H
#define QMULTILINEDIT_H

#ifndef QT_H
#include "qtableview.h"
#include "qstring.h"
#include "qlist.h"
#endif // QT_H

struct QMultiLineData;

class QMultiLineEdit : public QTableView
{
    Q_OBJECT
public:
    QMultiLineEdit( QWidget *parent=0, const char *name=0 );
   ~QMultiLineEdit();

    const char *textLine( int line ) const;
    QString text() const;

    int numLines() const;

    bool        isReadOnly() const;
    bool        isOverwriteMode() const;

    void        setFont( const QFont &font );
    virtual void insertLine( const char *s, int line = -1 );
    virtual void insertAt( const char *s, int line, int col );
    virtual void removeLine( int line );

    void        cursorPosition( int *line, int *col ) const;
    void        setCursorPosition( int line, int col, bool mark = FALSE );
    void        getCursorPosition( int *line, int *col );
    bool        atBeginning() const;
    bool        atEnd() const;

    bool        autoUpdate()    const;
    void        setAutoUpdate( bool );
    
    void        setFixedVisibleLines( int lines );

public slots:
    void       clear();
    void       setText( const char * );
    void       append( const char * );
    void       deselect();
    void       selectAll();
    void       setReadOnly( bool );
    void       setOverwriteMode( bool );
    void       paste();
    void       copyText();
    void       cut();

signals:
    void        textChanged();
    void        returnPressed();

protected:
    void        paintCell( QPainter *, int row, int col );

    void        mousePressEvent( QMouseEvent * );
    void        mouseMoveEvent( QMouseEvent * );
    void        mouseReleaseEvent( QMouseEvent * );
    void        mouseDoubleClickEvent( QMouseEvent * );
    void        keyPressEvent( QKeyEvent * );
    void        focusInEvent( QFocusEvent * );
    void        focusOutEvent( QFocusEvent * );
    void        timerEvent( QTimerEvent * );
    void        leaveEvent( QEvent * );

    bool        hasMarkedText() const;
    QString     markedText() const;
    int         textWidth( int );
    int         textWidth( QString * );

    QPoint      cursorPoint() const;

protected:
    virtual void insertChar( char );
    virtual void newLine();
    virtual void killLine();
    virtual void pageUp( bool mark=FALSE );
    virtual void pageDown( bool mark=FALSE );
    virtual void cursorLeft( bool mark=FALSE, bool wrap = TRUE );
    virtual void cursorRight( bool mark=FALSE, bool wrap = TRUE );
    virtual void cursorUp( bool mark=FALSE );
    virtual void cursorDown( bool mark=FALSE );
    virtual void backspace();
    virtual void del();
    virtual void home( bool mark=FALSE );
    virtual void end( bool mark=FALSE );


    bool        getMarkedRegion( int *line1, int *col1, 
                                 int *line2, int *col2 ) const;
    int         lineLength( int row ) const;
    QString     *getString( int row ) const;

private slots:
    void        clipboardChanged();

private:
    QList<QString> *contents;
    QMultiLineData *mlData;

    bool        readOnly;
    bool        cursorOn;
    bool        dummy;
    bool        markIsOn;
    bool        dragScrolling ;
    bool        dragMarking;
    bool        textDirty;    
    bool        wordMark;
    bool        overWrite;

    int         cursorX;
    int         cursorY;
    int         markAnchorX;
    int         markAnchorY;
    int         markDragX;
    int         markDragY;
    int         curXPos;        // cell coord of cursor
    int         blinkTimer;
    int         scrollTimer;

    int         mapFromView( int xPos, int row );
    int         mapToView( int xIndex, int row );

    void        setWidth( int );
    void        updateCellWidth();
    bool        partiallyInvisible( int row );
    void        makeVisible();
    void        setBottomCell( int row );

    void        newMark( int posx, int posy, bool copy=TRUE );
    void        markWord( int posx, int posy );
    int         charClass( char );
    void        turnMarkOff();

private:        // Disabled copy constructor and operator=
    QMultiLineEdit( const QMultiLineEdit & );
    QMultiLineEdit &operator=( const QMultiLineEdit & );
};

inline bool QMultiLineEdit::isReadOnly() const { return readOnly; }

inline bool QMultiLineEdit::isOverwriteMode() const { return overWrite; }

inline void QMultiLineEdit::setOverwriteMode( bool on ) 
{ 
    overWrite = on;
 }

inline int QMultiLineEdit::lineLength( int row ) const
{
    return contents->at( row )->length();
}

inline bool QMultiLineEdit::atEnd() const 
{ 
    return cursorY == (int)contents->count() - 1 
        && cursorX == lineLength( cursorY ) ; 
}

inline bool QMultiLineEdit::atBeginning() const 
{ 
    return cursorY == 0 && cursorX == 0; 
}

inline QString *QMultiLineEdit::getString( int row ) const
{
    return contents->at( row );
}

inline int QMultiLineEdit::numLines() const
{
    return contents->count();
}
#endif // QMULTILINED_H