path: root/src/gui/text/qfont.h

/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
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** This file is part of the QtGui module of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
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** $QT_END_LICENSE$
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****************************************************************************/

#ifndef QFONT_H
#define QFONT_H

#include <QtGui/qwindowdefs.h>
#include <QtCore/qstring.h>
#include <QtCore/qsharedpointer.h>

#if defined(Q_WS_X11) || defined(Q_WS_QWS) || defined(Q_WS_QPA)
typedef struct FT_FaceRec_* FT_Face;
#endif

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

class QFontPrivate;                                     /* don't touch */
class QStringList;
class QVariant;
class Q3TextFormatCollection;

class Q_GUI_EXPORT QFont
{
    Q_GADGET
    Q_ENUMS(StyleStrategy)
public:
    enum StyleHint {
        Helvetica,  SansSerif = Helvetica,
        Times,      Serif = Times,
        Courier,    TypeWriter = Courier,
        OldEnglish, Decorative = OldEnglish,
        System,
        AnyStyle,
        Cursive,
        Monospace,
        Fantasy
    };

    enum StyleStrategy {
        PreferDefault       = 0x0001,
        PreferBitmap        = 0x0002,
        PreferDevice        = 0x0004,
        PreferOutline       = 0x0008,
        ForceOutline        = 0x0010,
        PreferMatch         = 0x0020,
        PreferQuality       = 0x0040,
        PreferAntialias     = 0x0080,
        NoAntialias         = 0x0100,
        OpenGLCompatible    = 0x0200,
        ForceIntegerMetrics = 0x0400,
        NoFontMerging       = 0x8000
    };

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

    enum Style {
        StyleNormal,
        StyleItalic,
        StyleOblique
    };

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

    enum Capitalization {
        MixedCase,
        AllUppercase,
        AllLowercase,
        SmallCaps,
        Capitalize
    };

    enum SpacingType {
        PercentageSpacing,
        AbsoluteSpacing
    };

    enum ResolveProperties {
        FamilyResolved         = 0x0001,
        SizeResolved           = 0x0002,
        StyleHintResolved      = 0x0004,
        StyleStrategyResolved  = 0x0008,
        WeightResolved         = 0x0010,
        StyleResolved          = 0x0020,
        UnderlineResolved      = 0x0040,
        OverlineResolved       = 0x0080,
        StrikeOutResolved      = 0x0100,
        FixedPitchResolved     = 0x0200,
        StretchResolved        = 0x0400,
        KerningResolved        = 0x0800,
        CapitalizationResolved = 0x1000,
        LetterSpacingResolved  = 0x2000,
        WordSpacingResolved    = 0x4000,
        AllPropertiesResolved  = 0x7fff
    };

    QFont();
    QFont(const QString &family, int pointSize = -1, int weight = -1, bool italic = false);
    QFont(const QFont &, QPaintDevice *pd);
    QFont(const QFont &);
    ~QFont();

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

    int pointSize() const;
    void setPointSize(int);
    qreal pointSizeF() const;
    void setPointSizeF(qreal);

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

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

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

    void setStyle(Style style);
    Style style() const;

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

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

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

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

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

    bool kerning() const;
    void setKerning(bool);

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

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

    qreal letterSpacing() const;
    SpacingType letterSpacingType() const;
    void setLetterSpacing(SpacingType type, qreal spacing);

    qreal wordSpacing() const;
    void setWordSpacing(qreal spacing);

    void setCapitalization(Capitalization);
    Capitalization capitalization() const;

    // 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 operator<(const QFont &) const;
    operator QVariant() const;
    bool isCopyOf(const QFont &) const;
#ifdef Q_COMPILER_RVALUE_REFS
    inline QFont &operator=(QFont &&other)
    { qSwap(d, other.d); return *this; }
#endif

#ifdef Q_WS_WIN
    HFONT handle() const;
#else // !Q_WS_WIN
    Qt::HANDLE handle() const;
#endif // Q_WS_WIN
#ifdef Q_WS_MAC
    quint32 macFontID() const;
#endif
#if defined(Q_WS_X11) || defined(Q_WS_QWS) || defined(Q_WS_QPA)
    FT_Face freetypeFace() const;
#endif

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

    QString key() const;

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

    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 &);
    static void initialize();
    static void cleanup();
#ifndef Q_WS_QWS
    static void cacheStatistics();
#endif

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

    QFont resolve(const QFont &) const;
    inline uint resolve() const { return resolve_mask; }
    inline void resolve(uint mask) { resolve_mask = mask; }

#ifdef QT3_SUPPORT
    static QT3_SUPPORT QFont defaultFont();
    static QT3_SUPPORT void setDefaultFont(const QFont &);
    QT3_SUPPORT void setPixelSizeFloat(qreal);
    QT3_SUPPORT qreal pointSizeFloat() const { return pointSizeF(); }
    QT3_SUPPORT void setPointSizeFloat(qreal size) { setPointSizeF(size); }
#endif

private:
    QFont(QFontPrivate *);

    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 QFontPrivate;
    friend class QFontDialogPrivate;
    friend class QFontMetrics;
    friend class QFontMetricsF;
    friend class QFontInfo;
    friend class QPainter;
    friend class QPainterPrivate;
    friend class QPSPrintEngineFont;
    friend class QApplication;
    friend class QWidget;
    friend class QWidgetPrivate;
    friend class Q3TextFormatCollection;
    friend class QTextLayout;
    friend class QTextEngine;
    friend class QStackTextEngine;
    friend class QTextLine;
    friend struct QScriptLine;
    friend class QGLContext;
    friend class QWin32PaintEngine;
    friend class QAlphaPaintEngine;
    friend class QPainterPath;
    friend class QTextItemInt;
    friend class QPicturePaintEngine;
    friend class QPainterReplayer;
    friend class QPaintBufferEngine;
    friend class QCommandLinkButtonPrivate;
    friend class QFontEngine;

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

    QExplicitlySharedDataPointer<QFontPrivate> d;
    uint resolve_mask;
};


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


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

inline bool QFont::italic() const
{
    return (style() != StyleNormal);
}

inline void QFont::setItalic(bool b) {
    setStyle(b ? StyleItalic : StyleNormal);
}


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

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

#ifndef QT_NO_DEBUG_STREAM
Q_GUI_EXPORT QDebug operator<<(QDebug, const QFont &);
#endif

QT_END_NAMESPACE

QT_END_HEADER

#endif // QFONT_H