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# qtmultilineedit.h

This is the verbatim text of the qtmultilineedit.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /**********************************************************************
    ** $Id:  qt/qtmultilineedit.h   3.1.0-b2   edited Oct 9 2001 $
    **
    ** Definition of QtMultiLineEdit widget class
    **
    ** Created : 961005
    **
    ** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
    **
    ** This file contains a class moved out of the Qt GUI Toolkit API. It
    ** may be used, distributed and modified without limitation.
    **
    **********************************************************************/

    #ifndef QTMULTILINEEDIT_H
    #define QTMULTILINEEDIT_H

    #ifndef QT_H
    #include "qttableview.h"
    #include "qstring.h"
    #include "qptrlist.h"
    #endif // QT_H

    #ifndef QT_NO_QTMULTILINEEDIT

    struct QtMultiLineData;
    class QtMultiLineEditCommand;
    class QValidator;

    class QtMultiLineEdit : public QtTableView
    {
        Q_OBJECT
        Q_ENUMS( EchoMode WordWrap WrapPolicy )
        Q_PROPERTY( int numLines READ numLines )
        Q_PROPERTY( bool atBeginning READ atBeginning )
        Q_PROPERTY( bool atEnd READ atEnd )
        Q_PROPERTY( int maxLineWidth READ maxLineWidth )
        Q_PROPERTY( Alignment alignment READ alignment WRITE setAlignment )
        Q_PROPERTY( bool edited READ edited WRITE setEdited DESIGNABLE false )
        Q_PROPERTY( EchoMode echoMode READ echoMode WRITE setEchoMode )
        Q_PROPERTY( int maxLength READ maxLength WRITE setMaxLength )
        Q_PROPERTY( int maxLines READ maxLines WRITE setMaxLines )
        Q_PROPERTY( int hMargin READ hMargin WRITE setHMargin )
        Q_PROPERTY( WordWrap wordWrap READ wordWrap WRITE setWordWrap )
        Q_PROPERTY( int wrapColumnOrWidth READ wrapColumnOrWidth WRITE setWrapColumnOrWidth )
        Q_PROPERTY( WrapPolicy wrapPolicy READ wrapPolicy WRITE setWrapPolicy )
        Q_PROPERTY( bool autoUpdate READ autoUpdate WRITE setAutoUpdate DESIGNABLE false )
        Q_PROPERTY( bool undoEnabled READ isUndoEnabled WRITE setUndoEnabled )
        Q_PROPERTY( int undoDepth READ undoDepth WRITE setUndoDepth )
        Q_PROPERTY( bool readOnly READ isReadOnly WRITE setReadOnly )
        Q_PROPERTY( bool overWriteMode READ isOverwriteMode WRITE setOverwriteMode )
        Q_PROPERTY( QString text READ text WRITE setText )
        Q_PROPERTY( int length READ length )

    public:
        QtMultiLineEdit( QWidget *parent=0, const char *name=0 );
       ~QtMultiLineEdit();

        QString textLine( int line ) const;
        int numLines() const;

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

        virtual void setFont( const QFont &font );

        virtual void insertLine( const QString &s, int line = -1 );
        virtual void insertAt( const QString &s, int line, int col, bool mark = FALSE );
        virtual void removeLine( int line );

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

        virtual void setFixedVisibleLines( int lines );

        int maxLineWidth() const;

        void setAlignment( int flags );
        int alignment() const;

        virtual void setValidator( const QValidator * );
        const QValidator * validator() const;

        void setEdited( bool );
        bool edited() const;

        void cursorWordForward( bool mark );
        void cursorWordBackward( bool mark );

        enum EchoMode { Normal, NoEcho, Password };
        virtual void setEchoMode( EchoMode );
        EchoMode echoMode() const;

        void setMaxLength(int);
        int maxLength() const;
        virtual void setMaxLineLength(int);
        int maxLineLength() const;
        virtual void setMaxLines(int);
        int maxLines() const;
        virtual void setHMargin(int);
        int hMargin() const;

        virtual void setSelection( int row_from, int col_from, int row_to, int col_t );

        enum WordWrap {
    	NoWrap,
    	WidgetWidth,
    	FixedPixelWidth,
    	FixedColumnWidth
        };
        void setWordWrap( WordWrap mode );
        WordWrap wordWrap() const;
        void setWrapColumnOrWidth( int );
        int wrapColumnOrWidth() const;

        enum WrapPolicy {
    	AtWhiteSpace,
    	Anywhere
        };
        void setWrapPolicy( WrapPolicy policy );
        WrapPolicy wrapPolicy() const;

        bool autoUpdate()	const;
        virtual void setAutoUpdate( bool );

        void setUndoEnabled( bool );
        bool isUndoEnabled() const;
        void setUndoDepth( int );
        int undoDepth() const;

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

        QString text() const;

        int length() const;

        static void setDefaultTabStop( int ex );
        static int defaultTabStop();
    public slots:
        virtual void       setText( const QString &);
        virtual void       setReadOnly( bool );
        virtual void       setOverwriteMode( bool );

        void       clear();
        void       append( const QString &);
        void       deselect();
        void       selectAll();
    #ifndef QT_NO_CLIPBOARD
        void       paste();
        void       pasteSubType(const QCString& subtype);
        void       copyText() const;
        void       copy() const;
        void       cut();
    #endif
        void       insert( const QString& );
        void       undo();
        void       redo();

    signals:
        void	textChanged();
        void	returnPressed();
        void	undoAvailable( bool );
        void	redoAvailable( bool );
        void	copyAvailable( bool );

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

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

        bool	focusNextPrevChild( bool );

    #ifndef QT_NO_DRAGANDDROP
        void	dragMoveEvent( QDragMoveEvent* );
        void	dragEnterEvent( QDragEnterEvent * );
        void	dropEvent( QDropEvent* );
        void	dragLeaveEvent( QDragLeaveEvent* );
    #endif

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

        QPoint	cursorPoint() const;

    protected:
        virtual void insert( const QString&, bool mark );
        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;
        bool isEndOfParagraph( int row ) const;
        QString stringShown( int row ) const;

    protected:
        bool	cursorOn;
        void	insertChar( QChar );

    private slots:
        void	clipboardChanged();
        void	blinkTimerTimeout();
        void	scrollTimerTimeout();
        void	dndTimeout();

    private:
    #ifndef QT_NO_MIME
        QCString pickSpecial(QMimeSource* ms, bool always_ask, const QPoint&);
    #endif
    #ifndef QT_NO_MIMECLIPBOARD
        void       pasteSpecial(const QPoint&);
    #endif
        struct QtMultiLineEditRow {
    	QtMultiLineEditRow( QString string, int width, bool nl = TRUE )
    	    :s(string), w(width), newline( nl )
    	{
    	};
    	QString s;
    	int w;
    	bool newline;
        };
        QPtrList<QtMultiLineEditRow> *contents;
        QtMultiLineData *d;

        bool	readOnly;
        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; // #### not used anymore - remove in 3.0
        int		scrollTimer; // #### not used anymore - remove in 3.0

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

        void	pixelPosToCursorPos(QPoint p, int* x, int* y) const;
        void	setCursorPixelPosition(QPoint p, bool clear_mark=TRUE);

        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 );
        void	extendSelectionWord( int &newX, int&newY);
        int 	charClass( QChar );
        void	turnMark( bool on );
        bool	inMark( int posx, int posy ) const;
        bool	beforeMark( int posx, int posy ) const;
        bool	afterMark( int posx, int posy ) const;
        int		setNumRowsAndTruncate();

    #ifndef QT_NO_DRAGANDDROP
        void	doDrag();
    #endif
        void	startAutoScroll();
        void	stopAutoScroll();

        void	cursorLeft( bool mark, bool clear_mark, bool wrap );
        void	cursorRight( bool mark, bool clear_mark, bool wrap );
        void	cursorUp( bool mark, bool clear_mark );
        void	cursorDown( bool mark, bool clear_mark );

        void	wrapLine( int line, int removed = 0);
        void	rebreakParagraph( int line, int removed = 0 );
        void	rebreakAll();
        void	insertAtAux( const QString &s, int line, int col, bool mark = FALSE );
        void	killLineAux();
        void	delAux();
        int	positionToOffsetInternal( int row, int col ) const;
        void	offsetToPositionInternal( int position, int *row, int *col ) const;
        void	deleteNextChar( int offset, int row, int col );

        void addUndoCmd( QtMultiLineEditCommand* );
        void addRedoCmd( QtMultiLineEditCommand* );
        void processCmd( QtMultiLineEditCommand*, bool );

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

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

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

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

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

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

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

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

    inline int QtMultiLineEdit::numLines() const
    {
        return contents->count();
    }

    #endif // QT_NO_QTMULTILINEEDIT

    #endif // QTMULTILINEDIT_H