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qfontmetrics.h

/****************************************************************************
** $Id: qt/src/kernel/qfontmetrics.h   2.2.1   edited 2000-08-25 $
**
** 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.
**
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**********************************************************************/

#ifndef QFONTMETRICS_H
#define QFONTMETRICS_H

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

class QTextCodec;


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;
    int         width( char c ) const { return width( (QChar) c ); }
    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, char **intern=0 ) const;
    QSize       size( int flags,
                      const QString& str, int len=-1, int tabstops=0,
                      int *tabarray=0, char **intern=0 ) const;

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

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

#if defined(_WS_WIN_)
    void   *textMetric() const;
    HDC     hdc() const;
#elif defined(_WS_X11_)
    void   *fontStruct() const;
    void   *fontSet() const;
    const QTextCodec *mapper() const;
    int     printerAdjusted(int) const;
#elif defined(_WS_QWS_)
    QFontInternal *internal();
#endif

    friend class QWidget;
    friend class QPainter;

    QFontInternal *fin;
    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