qfontdatabase.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QFONTDATABASE_H
#define QFONTDATABASE_H
 
#include <QtGui/qtguiglobal.h>
#include <QtGui/qwindowdefs.h>
#include <QtCore/qstring.h>
#include <QtGui/qfont.h>
 
QT_BEGIN_NAMESPACE
 
 
struct QFontDef;
class QFontEngine;
 
class Q_GUI_EXPORT QFontDatabase
{
    Q_GADGET
public:
    enum WritingSystem {
        Any,
 
        Latin,
        Greek,
        Cyrillic,
        Armenian,
        Hebrew,
        Arabic,
        Syriac,
        Thaana,
        Devanagari,
        Bengali,
        Gurmukhi,
        Gujarati,
        Oriya,
        Tamil,
        Telugu,
        Kannada,
        Malayalam,
        Sinhala,
        Thai,
        Lao,
        Tibetan,
        Myanmar,
        Georgian,
        Khmer,
        SimplifiedChinese,
        TraditionalChinese,
        Japanese,
        Korean,
        Vietnamese,
 
        Symbol,
        Other = Symbol,
 
        Ogham,
        Runic,
        Nko,
 
        WritingSystemsCount
    };
    Q_ENUM(WritingSystem)
 
    enum SystemFont {
        GeneralFont,
        FixedFont,
        TitleFont,
        SmallestReadableFont
    };
    Q_ENUM(SystemFont)
 
    static QList<int> standardSizes();
 
#if QT_DEPRECATED_SINCE(6, 0) && !defined(QT_BUILD_GUI_LIB)
    QT_DEPRECATED_VERSION_X_6_0("Call the static functions instead") explicit QFontDatabase() = default;
#else
    QFontDatabase() = delete;
#endif
 
    static QList<WritingSystem> writingSystems();
    static QList<WritingSystem> writingSystems(const QString &family);
 
    static QStringList families(WritingSystem writingSystem = Any);
    static QStringList styles(const QString &family);
    static QList<int> pointSizes(const QString &family, const QString &style = QString());
    static QList<int> smoothSizes(const QString &family, const QString &style);
    static QString styleString(const QFont &font);
    static QString styleString(const QFontInfo &fontInfo);
 
    static QFont font(const QString &family, const QString &style, int pointSize);
 
    static bool isBitmapScalable(const QString &family, const QString &style = QString());
    static bool isSmoothlyScalable(const QString &family, const QString &style = QString());
    static bool isScalable(const QString &family, const QString &style = QString());
    static bool isFixedPitch(const QString &family, const QString &style = QString());
 
    static bool italic(const QString &family, const QString &style);
    static bool bold(const QString &family, const QString &style);
    static int weight(const QString &family, const QString &style);
 
    static bool hasFamily(const QString &family);
    static bool isPrivateFamily(const QString &family);
 
    static QString writingSystemName(WritingSystem writingSystem);
    static QString writingSystemSample(WritingSystem writingSystem);
 
    static int addApplicationFont(const QString &fileName);
    static int addApplicationFontFromData(const QByteArray &fontData);
    static QStringList applicationFontFamilies(int id);
    static bool removeApplicationFont(int id);
    static bool removeAllApplicationFonts();
 
    static void addApplicationFallbackFontFamily(QChar::Script script, const QString &familyName);
    static bool removeApplicationFallbackFontFamily(QChar::Script script, const QString &familyName);
    static void setApplicationFallbackFontFamilies(QChar::Script, const QStringList &familyNames);
    static QStringList applicationFallbackFontFamilies(QChar::Script script);
 
    static void addApplicationEmojiFontFamily(const QString &familyName);
    static bool removeApplicationEmojiFontFamily(const QString &familyName);
    static void setApplicationEmojiFontFamilies(const QStringList &familyNames);
    static QStringList applicationEmojiFontFamilies();
 
    static QFont systemFont(SystemFont type);
};
 
QT_END_NAMESPACE
 
#endif // QFONTDATABASE_H