katie/src/gui/text/qfontdatabase.h

/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Copyright (C) 2016-2019 Ivailo Monev
**
** This file is part of the QtGui module of the Katie Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QFONTDATABASE_H
#define QFONTDATABASE_H

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

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

class QFontInfo;
class QStringList;
template <class T> class QList;
struct QFontDef;
class QFontEngine;

class QFontDatabasePrivate;

class Q_GUI_EXPORT QFontDatabase
{
    Q_GADGET
    Q_ENUMS(WritingSystem)
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
    };

    static QList<int> standardSizes();

    QFontDatabase();

    QList<WritingSystem> writingSystems() const;
    QList<WritingSystem> writingSystems(const QString &family) const;

    QStringList families(WritingSystem writingSystem = Any) const;
    QStringList styles(const QString &family) const;
    QList<int> pointSizes(const QString &family, const QString &style = QString());
    QList<int> smoothSizes(const QString &family, const QString &style);
    QString styleString(const QFont &font);
    QString styleString(const QFontInfo &fontInfo);

    QFont font(const QString &family, const QString &style, int pointSize) const;

    bool isBitmapScalable(const QString &family, const QString &style = QString()) const;
    bool isSmoothlyScalable(const QString &family, const QString &style = QString()) const;
    bool isScalable(const QString &family, const QString &style = QString()) const;
    bool isFixedPitch(const QString &family, const QString &style = QString()) const;

    bool italic(const QString &family, const QString &style) const;
    bool bold(const QString &family, const QString &style) const;
    int weight(const QString &family, const QString &style) const;

    bool hasFamily(const QString &family) const;

    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 bool supportsThreadedFontRendering();

private:
    static void createDatabase();
    static void parseFontName(const QString &name, QString &foundry, QString &family);
    static QString resolveFontFamilyAlias(const QString &family);
    static void load(const QFontPrivate *d, int script);
#ifdef Q_WS_X11
    static QFontEngine *loadXlfd(int script, const QFontDef &request, int force_encoding_id = -1);
#endif

    friend struct QFontDef;
    friend class QFontPrivate;
    friend class QFontDialog;
    friend class QFontDialogPrivate;

    QFontDatabasePrivate *d;
};

QT_END_NAMESPACE

QT_END_HEADER

#endif // QFONTDATABASE_H