src/qt/include/qfont.h

Ir a la documentación de este archivo.

/****************************************************************************
** $Id: qt/qfont.h   3.3.8   edited Jan 11 14:38 $
**
** Definition of QFont class
**
** Created : 940514
**
** Copyright (C) 1992-2007 Trolltech ASA.  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 ASA 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 QFONT_H
#define QFONT_H

#ifndef QT_H
#include "qwindowdefs.h"
#include "qstring.h"
#endif // QT_H


class QFontPrivate;                                     /* don't touch */
class QStringList;
class QTextFormatCollection;

class Q_EXPORT QFont
{
public:
    enum StyleHint {
        Helvetica,  SansSerif = Helvetica,
        Times,      Serif = Times,
        Courier,    TypeWriter = Courier,
        OldEnglish, Decorative = OldEnglish,
        System,
        AnyStyle
    };

    enum StyleStrategy {
        PreferDefault    = 0x0001,
        PreferBitmap     = 0x0002,
        PreferDevice     = 0x0004,
        PreferOutline    = 0x0008,
        ForceOutline     = 0x0010,
        PreferMatch      = 0x0020,
        PreferQuality    = 0x0040,
        PreferAntialias  = 0x0080,
        NoAntialias      = 0x0100,
        OpenGLCompatible = 0x0200
    };

    enum Weight {
        Light    = 25,
        Normal   = 50,
        DemiBold = 63,
        Bold     = 75,
        Black    = 87
    };

    enum Stretch {
        UltraCondensed =  50,
        ExtraCondensed =  62,
        Condensed      =  75,
        SemiCondensed  =  87,
        Unstretched    = 100,
        SemiExpanded   = 112,
        Expanded       = 125,
        ExtraExpanded  = 150,
        UltraExpanded  = 200
    };

    // default font
    QFont();
    // specific font
#ifdef Q_QDOC
    QFont( const QString &family, int pointSize = 12, int weight = Normal,
           bool italic = FALSE );
#else
    QFont( const QString &family, int pointSize = -1, int weight = -1,
           bool italic = FALSE );
#endif
    // copy constructor
    QFont( const QFont & );

    ~QFont();

    QString family() const;
    void setFamily( const QString &);

    int pointSize() const;
    float pointSizeFloat() const;
    void setPointSize( int );
    void setPointSizeFloat( float );

    int pixelSize() const;
    void setPixelSize( int );
    void setPixelSizeFloat( float );

    int weight() const;
    void setWeight( int );

    bool bold() const;
    void setBold( bool );

    bool italic() const;
    void setItalic( bool );

    bool underline() const;
    void setUnderline( bool );

    bool overline() const;
    void setOverline( bool );

    bool strikeOut() const;
    void setStrikeOut( bool );

    bool fixedPitch() const;
    void setFixedPitch( bool );

    StyleHint styleHint() const;
    StyleStrategy styleStrategy() const;
    void setStyleHint( StyleHint, StyleStrategy = PreferDefault );
    void setStyleStrategy( StyleStrategy s );

    int stretch() const;
    void setStretch( int );

    // is raw mode still needed?
    bool rawMode() const;
    void setRawMode( bool );

    // dupicated from QFontInfo
    bool exactMatch() const;

    QFont &operator=( const QFont & );
    bool operator==( const QFont & ) const;
    bool operator!=( const QFont & ) const;
    bool isCopyOf( const QFont & ) const;


#ifdef Q_WS_WIN
    HFONT handle() const;
#else // !Q_WS_WIN
    Qt::HANDLE handle() const;
#endif // Q_WS_WIN


    // needed for X11
    void setRawName( const QString & );
    QString rawName() const;

    QString key() const;

    QString toString() const;
    bool fromString(const QString &);

#ifndef QT_NO_STRINGLIST
    static QString substitute(const QString &);
    static QStringList substitutes(const QString &);
    static QStringList substitutions();
    static void insertSubstitution(const QString&, const QString &);
    static void insertSubstitutions(const QString&, const QStringList &);
    static void removeSubstitution(const QString &);
#endif //QT_NO_STRINGLIST
    static void initialize();
    static void cleanup();
#ifndef Q_WS_QWS
    static void cacheStatistics();
#endif

#if defined(Q_WS_QWS)
    void qwsRenderToDisk(bool all=TRUE);
#endif


    // a copy of this lives in qunicodetables.cpp, as we can't include
    // qfont.h it in tools/. Do not modify without changing the script
    // enum in qunicodetable_p.h aswell.
    enum Script {
        // European Alphabetic Scripts
        Latin,
        Greek,
        Cyrillic,
        Armenian,
        Georgian,
        Runic,
        Ogham,
        SpacingModifiers,
        CombiningMarks,

        // Middle Eastern Scripts
        Hebrew,
        Arabic,
        Syriac,
        Thaana,

        // South and Southeast Asian Scripts
        Devanagari,
        Bengali,
        Gurmukhi,
        Gujarati,
        Oriya,
        Tamil,
        Telugu,
        Kannada,
        Malayalam,
        Sinhala,
        Thai,
        Lao,
        Tibetan,
        Myanmar,
        Khmer,

        // East Asian Scripts
        Han,
        Hiragana,
        Katakana,
        Hangul,
        Bopomofo,
        Yi,

        // Additional Scripts
        Ethiopic,
        Cherokee,
        CanadianAboriginal,
        Mongolian,

        // Symbols
        CurrencySymbols,
        LetterlikeSymbols,
        NumberForms,
        MathematicalOperators,
        TechnicalSymbols,
        GeometricSymbols,
        MiscellaneousSymbols,
        EnclosedAndSquare,
        Braille,

        Unicode,

        // some scripts added in Unicode 3.2
        Tagalog,
        Hanunoo,
        Buhid,
        Tagbanwa,

        KatakanaHalfWidth,

        // from Unicode 4.0
        Limbu,
        TaiLe,

        // End
#if !defined(Q_QDOC)
        NScripts,
        UnknownScript = NScripts,

        NoScript,

        // ----------------------------------------
        // Dear User, you can see values > NScript,
        // but they are internal - do not touch.

        Han_Japanese,
        Han_SimplifiedChinese,
        Han_TraditionalChinese,
        Han_Korean,

        LastPrivateScript
#endif
    };

    QString defaultFamily() const;
    QString lastResortFamily() const;
    QString lastResortFont() const;

#ifndef QT_NO_COMPAT

    static QFont defaultFont();
    static void setDefaultFont( const QFont & );

#endif // QT_NO_COMPAT

    QFont resolve( const QFont & ) const;

protected:
    // why protected?
    bool dirty() const;
    int deciPointSize() const;

private:
    QFont( QFontPrivate *, QPaintDevice *pd );

    void detach();

#if defined(Q_WS_MAC)
    void macSetFont(QPaintDevice *);
#elif defined(Q_WS_X11)
    void x11SetScreen( int screen = -1 );
    int x11Screen() const;
#endif

    friend class QFontMetrics;
    friend class QFontInfo;
    friend class QPainter;
    friend class QPSPrinterFont;
    friend class QApplication;
    friend class QWidget;
    friend class QTextFormatCollection;
    friend class QTextLayout;
    friend class QTextItem;
    friend class QGLContext;
#if defined(Q_WS_X11) && !defined(QT_NO_XFTFREETYPE)
    friend Qt::HANDLE qt_xft_handle(const QFont &font);
#endif
#ifndef QT_NO_DATASTREAM
    friend Q_EXPORT QDataStream &operator<<( QDataStream &, const QFont & );
    friend Q_EXPORT QDataStream &operator>>( QDataStream &, QFont & );
#endif

    QFontPrivate *d;
};


inline bool QFont::bold() const
{ return weight() > Normal; }


inline void QFont::setBold( bool enable )
{ setWeight( enable ? Bold : Normal ); }




/*****************************************************************************
  QFont stream functions
 *****************************************************************************/

#ifndef QT_NO_DATASTREAM
Q_EXPORT QDataStream &operator<<( QDataStream &, const QFont & );
Q_EXPORT QDataStream &operator>>( QDataStream &, QFont & );
#endif


#endif // QFONT_H