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qmultilineedit.h


This is the verbatim text of the qmultilineedit.h include file. It is provided only for illustration; the copyright remains with Trolltech.
/**********************************************************************
** $Id: //depot/qt/main/src/widgets/qmultilineedit.h#24 $
**
** Definition of QMultiLineEdit widget class
**
** Created : 961005
**
** 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 QMULTILINEEDIT_H
#define QMULTILINEEDIT_H

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

#ifndef QT_NO_MULTILINEEDIT

struct QMultiLineData;
class QMultiLineEditCommand;
class QValidator;

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

    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 QMultiLineEditRow {
        QMultiLineEditRow( QString string, int width, bool nl = TRUE )
            :s(string), w(width), newline( nl )
        {
        };
        QString s;
        int w;
        bool newline;
    };
    QList<QMultiLineEditRow> *contents;
    QMultiLineData *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();
    void        removeText( int startLine, int startCol, 
                            int endLine, int endCol );
    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( QMultiLineEditCommand* );
    void addRedoCmd( QMultiLineEditCommand* );
    void processCmd( QMultiLineEditCommand*, bool );

#ifndef QT_NO_QWS_IM
    void imStartEvent( QIMEvent * );
    void imComposeEvent( QIMEvent * );
    void imEndEvent( QIMEvent * );
    bool composeMode() const;
    int  pixelPosToIMPos( const QPoint& ) const;
    void recalcIM();
    void forceIMEnd();
    friend class QInputContext;
#endif

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

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 )->s.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 )->s);
}

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

#endif // QT_NO_MULTILINEEDIT

#endif // QMULTILINED_H

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