diff options
Diffstat (limited to 'src/gui/text/qplatformfontdatabase_qpa.cpp')
| -rw-r--r-- | src/gui/text/qplatformfontdatabase_qpa.cpp | 64 |
1 files changed, 53 insertions, 11 deletions
diff --git a/src/gui/text/qplatformfontdatabase_qpa.cpp b/src/gui/text/qplatformfontdatabase_qpa.cpp index 6071c55..7e829db 100644 --- a/src/gui/text/qplatformfontdatabase_qpa.cpp +++ b/src/gui/text/qplatformfontdatabase_qpa.cpp @@ -51,6 +51,13 @@ extern void qt_registerFont(const QString &familyname, const QString &foundrynam QFont::Style style, int stretch, bool antialiased,bool scalable, int pixelSize, const QSupportedWritingSystems &writingSystems, void *hanlde); +/*! + \fn void QPlatformFontDatabase::registerQPF2Font(const QByteArray &dataArray, void *) + + Registers the pre-rendered QPF2 font contained in the given \a dataArray. + + \sa registerFont() +*/ void QPlatformFontDatabase::registerQPF2Font(const QByteArray &dataArray, void *handle) { if (dataArray.size() == 0) @@ -88,6 +95,32 @@ void QPlatformFontDatabase::registerQPF2Font(const QByteArray &dataArray, void * } } +/*! + \fn void QPlatformFontDatabase::registerFont(const QString &familyName, + const QString &foundryName, QFont::Weight weight, QFont::Style style, + QFont::Stretch stretch, bool antialiased, bool scalable, int pixelSize, + const QSupportedWritingSystems &writingSystems, void *usrPtr) + + 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. Additional information about whether the font + can be scaled and antialiased can also be provided. + + The foundry name and font family are described by \a foundryName and + \a familyName. The font weight (light, normal, bold, etc.), style (normal, + oblique, italic) and stretch information (condensed, expanded, unstretched, + etc.) are specified by \a weight, \a style and \a stretch. + + Some fonts can be antialiased and scaled; \a scalable and \a antialiased + can be set to true for fonts with these attributes. The intended pixel + size of non-scalable fonts is specified by \a pixelSize; this value will be + ignored for scalable fonts. + + The writing systems supported by the font are specified by the + \a writingSystems argument. + + \sa registerQPF2Font() +*/ void QPlatformFontDatabase::registerFont(const QString &familyname, const QString &foundryname, QFont::Weight weight, QFont::Style style, QFont::Stretch stretch, bool antialiased, bool scalable, int pixelSize, const QSupportedWritingSystems &writingSystems, void *usrPtr) @@ -206,7 +239,8 @@ void QPlatformFontDatabase::populateFontDatabase() } /*! - + Returns the font engine that can be used to render the font described by + the font definition, \a fontDef, in the specified \a script. */ QFontEngine *QPlatformFontDatabase::fontEngine(const QFontDef &fontDef, QUnicodeTables::Script script, void *handle) { @@ -229,7 +263,8 @@ QFontEngine *QPlatformFontDatabase::fontEngine(const QByteArray &fontData, qreal } /*! - + Returns a list of alternative fonts for the specified \a family and + \a style and \a script using the \a styleHint given. */ QStringList QPlatformFontDatabase::fallbacksForFamily(const QString family, const QFont::Style &style, const QFont::StyleHint &styleHint, const QUnicodeTables::Script &script) const { @@ -241,8 +276,13 @@ QStringList QPlatformFontDatabase::fallbacksForFamily(const QString family, cons } /*! - Adds an application font. Returns a list of family names, or an empty list if the font could - not be added + Adds an application font described by the font contained supplied \a fontData + or using the font contained in the file referenced by \a fileName. Returns + a list of family names, or an empty list if the font could not be added. + + \note The default implementation of this function does not add an application + font. Subclasses should reimplement this function to perform the necessary + loading and registration of fonts. */ QStringList QPlatformFontDatabase::addApplicationFont(const QByteArray &fontData, const QString &fileName) { @@ -280,21 +320,23 @@ QString QPlatformFontDatabase::fontDir() const /*! \class QPlatformFontDatabase - \brief The QPlatformFontDatabase makes it possible to customize how fonts are picked up, and - and how they are rendered + \brief The QPlatformFontDatabase class makes it possible to customize how fonts + are discovered and how they are rendered \ingroup painting QPlatformFontDatabase is the superclass which is intended to let platform implementations use native font handling. - Qt has its internal fontdatabase which it uses to pick up available fonts. To be able - to populate this database subclass this class, and reimplement populateFontDatabase(). + Qt has its internal font database which it uses to discover available fonts on the + user's system. To be able to populate this database subclass this class, and + reimplement populateFontDatabase(). - Use the function registerFont to populate the internal fontdatabase. + Use the function registerFont() to populate the internal font database. - Sometimes a specified font does not have the required glyphs, then the fallbackForFamily - function is called. + Sometimes a specified font does not have the required glyphs; in such a case, the + fallbackForFamily() function is called automatically to find alternative font + families that can supply alternatives to the missing glyphs. \sa QSupportedWritingSystems */ |