| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #ifndef QPLATFORMFONTDATABASE_H |
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| 5 | #define QPLATFORMFONTDATABASE_H |
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| 6 | |
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| 7 | // |
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| 8 | // W A R N I N G |
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| 9 | // ------------- |
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| 10 | // |
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| 11 | // This file is part of the QPA API and is not meant to be used |
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| 12 | // in applications. Usage of this API may make your code |
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| 13 | // source and binary incompatible with future versions of Qt. |
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| 14 | // |
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| 15 | |
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| 16 | #include <QtGui/qtguiglobal.h> |
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| 17 | #include <QtCore/qloggingcategory.h> |
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| 18 | #include <QtCore/QString> |
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| 19 | #include <QtCore/QStringList> |
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| 20 | #include <QtCore/QList> |
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| 21 | #include <QtGui/QFontDatabase> |
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| 22 | #include <QtGui/private/qfontengine_p.h> |
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| 23 | #include <QtGui/private/qfont_p.h> |
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| 24 | #include <QtGui/private/qfontdatabase_p.h> |
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| 25 | |
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| 26 | QT_BEGIN_NAMESPACE |
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| 27 | |
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| 28 | Q_DECLARE_EXPORTED_LOGGING_CATEGORY(lcQpaFonts, Q_GUI_EXPORT) |
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| 29 | |
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| 30 | class QWritingSystemsPrivate; |
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| 31 | |
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| 32 | class Q_GUI_EXPORT QSupportedWritingSystems |
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| 33 | { |
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| 34 | public: |
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| 35 | |
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| 36 | QSupportedWritingSystems(); |
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| 37 | QSupportedWritingSystems(const QSupportedWritingSystems &other); |
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| 38 | QSupportedWritingSystems &operator=(const QSupportedWritingSystems &other); |
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| 39 | ~QSupportedWritingSystems(); |
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| 40 | |
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| 41 | void setSupported(QFontDatabase::WritingSystem, bool supported = true); |
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| 42 | bool supported(QFontDatabase::WritingSystem) const; |
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| 43 | |
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| 44 | private: |
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| 45 | void detach(); |
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| 46 | |
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| 47 | QWritingSystemsPrivate *d; |
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| 48 | |
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| 49 | friend Q_GUI_EXPORT bool operator==(const QSupportedWritingSystems &, const QSupportedWritingSystems &); |
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| 50 | friend Q_GUI_EXPORT bool operator!=(const QSupportedWritingSystems &, const QSupportedWritingSystems &); |
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| 51 | #ifndef QT_NO_DEBUG_STREAM |
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| 52 | friend Q_GUI_EXPORT QDebug operator<<(QDebug, const QSupportedWritingSystems &); |
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| 53 | #endif |
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| 54 | }; |
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| 55 | |
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| 56 | Q_GUI_EXPORT bool operator==(const QSupportedWritingSystems &, const QSupportedWritingSystems &); |
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| 57 | Q_GUI_EXPORT bool operator!=(const QSupportedWritingSystems &, const QSupportedWritingSystems &); |
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| 58 | |
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| 59 | #ifndef QT_NO_DEBUG_STREAM |
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| 60 | Q_GUI_EXPORT QDebug operator<<(QDebug, const QSupportedWritingSystems &); |
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| 61 | #endif |
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| 62 | |
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| 63 | class QFontRequestPrivate; |
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| 64 | class QFontEngineMulti; |
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| 65 | |
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| 66 | class Q_GUI_EXPORT QPlatformFontDatabase |
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| 67 | { |
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| 68 | public: |
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| 69 | virtual ~QPlatformFontDatabase(); |
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| 70 | virtual void populateFontDatabase(); |
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| 71 | virtual bool populateFamilyAliases(const QString &missingFamily) { Q_UNUSED(missingFamily); return false; } |
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| 72 | virtual void populateFamily(const QString &familyName); |
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| 73 | virtual void invalidate(); |
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| 74 | |
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| 75 | virtual QStringList fallbacksForFamily(const QString &family, QFont::Style style, QFont::StyleHint styleHint, QChar::Script script) const; |
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| 76 | virtual QStringList addApplicationFont(const QByteArray &fontData, const QString &fileName, QFontDatabasePrivate::ApplicationFont *font = nullptr); |
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| 77 | |
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| 78 | virtual QFontEngine *fontEngine(const QFontDef &fontDef, void *handle); |
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| 79 | virtual QFontEngine *fontEngine(const QByteArray &fontData, qreal pixelSize, QFont::HintingPreference hintingPreference); |
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| 80 | virtual QFontEngineMulti *fontEngineMulti(QFontEngine *fontEngine, QChar::Script script); |
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| 81 | virtual void releaseHandle(void *handle); |
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| 82 | |
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| 83 | virtual QString fontDir() const; |
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| 84 | |
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| 85 | virtual QFont defaultFont() const; |
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| 86 | virtual bool isPrivateFontFamily(const QString &family) const; |
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| 87 | |
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| 88 | virtual QString resolveFontFamilyAlias(const QString &family) const; |
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| 89 | virtual bool fontsAlwaysScalable() const; |
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| 90 | virtual QList<int> standardSizes() const; |
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| 91 | |
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| 92 | virtual bool supportsVariableApplicationFonts() const; |
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| 93 | |
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| 94 | // helper |
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| 95 | static QSupportedWritingSystems writingSystemsFromTrueTypeBits(quint32 unicodeRange[4], quint32 [2]); |
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| 96 | static QSupportedWritingSystems writingSystemsFromOS2Table(const char *os2Table, size_t length); |
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| 97 | |
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| 98 | //callback |
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| 99 | static void registerFont(const QString &familyname, const QString &stylename, |
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| 100 | const QString &foundryname, QFont::Weight weight, |
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| 101 | QFont::Style style, QFont::Stretch stretch, bool antialiased, |
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| 102 | bool scalable, int pixelSize, bool fixedPitch, |
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| 103 | const QSupportedWritingSystems &writingSystems, void *handle); |
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| 104 | |
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| 105 | static void registerFontFamily(const QString &familyName); |
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| 106 | static void registerAliasToFontFamily(const QString &familyName, const QString &alias); |
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| 107 | |
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| 108 | static void repopulateFontDatabase(); |
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| 109 | |
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| 110 | static bool isFamilyPopulated(const QString &familyName); |
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| 111 | }; |
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| 112 | |
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| 113 | QT_END_NAMESPACE |
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| 114 | |
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| 115 | #endif // QPLATFORMFONTDATABASE_H |
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| 116 | |
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