qfontmetrics.h

/****************************************************************************
** $Id: qfontmetrics.h,v 2.27 1999/04/28 09:56:23 aavit Exp $
**
** Definition of QFontMetrics class
**
** Created : 940514
**
** Copyright (C) 1992-1999 Troll Tech AS.  All rights reserved.
**
** This file is part of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Troll Tech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** Licensees holding valid Qt Professional Edition licenses may use this
** file in accordance with the Qt Professional Edition License Agreement
** provided with the Qt Professional Edition.
**
** See http://www.troll.no/pricing.html or email sales@troll.no for
** information about the Professional Edition licensing, or see
** http://www.troll.no/qpl/ for QPL licensing information.
**
*****************************************************************************/

#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;
#endif

    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; }

    friend class QWidget;
    friend class QPainter;
};


#endif // QFONTMETRICS_H