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Qt
Internal/Contributor docs for the Qt SDK. <b>Note:</b> These are NOT official API docs; those are found <a href='https://doc.qt.io/'>here</a>.
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Qt
Internal/Contributor docs for the Qt SDK. <b>Note:</b> These are NOT official API docs; those are found <a href='https://doc.qt.io/'>here</a>.
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Inheritance diagram for DummyFontDatabase: Collaboration diagram for DummyFontDatabase:Public Member Functions | |
| virtual void | populateFontDatabase () override |
| This function is called once at startup by Qt's internal font database. | |
| Public Member Functions inherited from QPlatformFontDatabase | |
| virtual | ~QPlatformFontDatabase () |
| virtual bool | populateFamilyAliases (const QString &missingFamily) |
| virtual void | populateFamily (const QString &familyName) |
| This function is called whenever a lazily populated family, populated through registerFontFamily(), needs full population. | |
| virtual void | invalidate () |
| This function is called whenever the font database is invalidated. | |
| virtual QStringList | fallbacksForFamily (const QString &family, QFont::Style style, QFont::StyleHint styleHint, QChar::Script script) const |
| Returns a list of alternative fonts for the specified family and style and script using the styleHint given. | |
| virtual QStringList | addApplicationFont (const QByteArray &fontData, const QString &fileName, QFontDatabasePrivate::ApplicationFont *font=nullptr) |
| Adds an application font described by the font contained supplied fontData or using the font contained in the file referenced by fileName. | |
| virtual QFontEngine * | fontEngine (const QFontDef &fontDef, void *handle) |
| Returns the font engine that can be used to render the font described by the font definition, fontDef, in the specified script. | |
| virtual QFontEngine * | fontEngine (const QByteArray &fontData, qreal pixelSize, QFont::HintingPreference hintingPreference) |
| Returns the font engine that will be used to back a QRawFont, based on the given \fontData, pixelSize, and hintingPreference. | |
| virtual QFontEngineMulti * | fontEngineMulti (QFontEngine *fontEngine, QChar::Script script) |
| Returns a multi font engine in the specified script to encapsulate fontEngine with the option to fall back to the fonts given by fallbacks if fontEngine does not support a certain character. | |
| virtual void | releaseHandle (void *handle) |
| Releases the specified font handle. | |
| virtual QString | fontDir () const |
| Returns the directory containing the fonts used by the database. | |
| virtual QFont | defaultFont () const |
| Returns the default system font. | |
| virtual bool | isPrivateFontFamily (const QString &family) const |
| Returns true if the font family is private. | |
| virtual QString | resolveFontFamilyAlias (const QString &family) const |
| Resolve alias to actual font family names. | |
| virtual bool | fontsAlwaysScalable () const |
| Return true if all fonts are considered scalable when using this font database. | |
| virtual QList< int > | standardSizes () const |
| Return list of standard font sizes when using this font database. | |
| virtual bool | supportsVariableApplicationFonts () const |
| Returns true if this font database supports loading named instances from variable application fonts. | |
Additional Inherited Members | |
| Static Public Member Functions inherited from QPlatformFontDatabase | |
| static QSupportedWritingSystems | writingSystemsFromTrueTypeBits (quint32 unicodeRange[4], quint32 codePageRange[2]) |
| Helper function that determines the writing systems support by a given unicodeRange and codePageRange. | |
| static QSupportedWritingSystems | writingSystemsFromOS2Table (const char *os2Table, size_t length) |
| Helper function that determines the writing system support based on the contents of the OS/2 table in the font. | |
| static void | registerFont (const QString &familyname, const QString &stylename, const QString &foundryname, QFont::Weight weight, QFont::Style style, QFont::Stretch stretch, bool antialiased, bool scalable, int pixelSize, bool fixedPitch, const QSupportedWritingSystems &writingSystems, void *handle) |
| Registers a font with the given set of attributes describing the font's foundry, family name, style and stretch information, pixel size, and supported writing systems. | |
| static void | registerFontFamily (const QString &familyName) |
| Registers a font family with the font database. | |
| static void | registerAliasToFontFamily (const QString &familyName, const QString &alias) |
| Helper function that register the alias for the familyName. | |
| static void | repopulateFontDatabase () |
| Requests that the platform font database should be repopulated. | |
| static bool | isFamilyPopulated (const QString &familyName) |
| Helper function that returns true if the font family has already been registered and populated. | |
Definition at line 97 of file qminimalintegration.cpp.
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inlineoverridevirtual |
This function is called once at startup by Qt's internal font database.
Reimplement this function in a subclass for a convenient place to initialize the internal font database.
You may lazily populate the database by calling registerFontFamily() instead of registerFont(), in which case you'll get a callback to populateFamily() when the required family needs population. You then call registerFont() to finish population of the family.
The default implementation does nothing.
Reimplemented from QPlatformFontDatabase.
Definition at line 100 of file qminimalintegration.cpp.
1.10.0