qfontmetrics.h Include File

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# qfontmetrics.h

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

    /****************************************************************************
    ** $Id: qt/qfontmetrics.h   3.1.2   edited Nov 8 14:38 $
    **
    ** Definition of QFontMetrics class
    **
    ** Created : 940514
    **
    ** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the kernel 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 QFONTMETRICS_H
    #define QFONTMETRICS_H

    #ifndef QT_H
    #include "qfont.h"
    #include "qrect.h"
    #endif // QT_H

    class QFontStruct;
    class QTextCodec;
    class QTextParag;

    class Q_EXPORT QFontMetrics
    {
    public:
        QFontMetrics( const QFont & );
        QFontMetrics( const QFontMetrics & );
        ~QFontMetrics();

        QFontMetrics &operator=( const QFontMetrics & );

        int		ascent()	const;
        int		descent()	const;
        int		height()	const;
        int		leading()	const;
        int		lineSpacing()	const;
        int		minLeftBearing() const;
        int		minRightBearing() const;
        int		maxWidth()	const;

        bool	inFont(QChar)	const;

        int		leftBearing(QChar) const;
        int		rightBearing(QChar) const;
        int		width( const QString &, int len = -1 ) const;

        int		width( QChar ) const;
    #ifndef QT_NO_COMPAT
        int		width( char c ) const { return width( (QChar) c ); }
    #endif

        int 		charWidth( const QString &str, int pos ) const;
        QRect	boundingRect( const QString &, int len = -1 ) const;
        QRect	boundingRect( QChar ) const;
        QRect	boundingRect( int x, int y, int w, int h, int flags,
    			      const QString& str, int len=-1, int tabstops=0,
    			      int *tabarray=0, QTextParag **intern=0 ) const;
        QSize	size( int flags,
    		      const QString& str, int len=-1, int tabstops=0,
    		      int *tabarray=0, QTextParag **intern=0 ) const;

        int		underlinePos()	const;
        int		strikeOutPos()	const;
        int		lineWidth()	const;

    private:
        QFontMetrics( const QPainter * );
        static void reset( const QPainter * );

    #if defined(Q_WS_WIN)
        void   *textMetric() const;
        HDC	    hdc() const;
    #elif defined(Q_WS_QWS)
        QFontStruct *internal();
    #endif

        friend class QWidget;
        friend class QPainter;
        friend class QTextFormat;
    #if defined( Q_WS_MAC )
        friend class QFontPrivate;
    #endif

        QFontPrivate  *d;
        QPainter      *painter;
        int		   flags;

        bool    underlineFlag()  const { return (flags & 0x1) != 0; }
        bool    strikeOutFlag()  const { return (flags & 0x2) != 0; }
        void    setUnderlineFlag()	   { flags |= 0x1; }
        void    setStrikeOutFlag()	   { flags |= 0x2; }
    };

    #endif // QFONTMETRICS_H