diff options
author | Konstantin Ritt <ritt.ks@gmail.com> | 2015-05-18 09:27:10 +0400 |
---|---|---|
committer | Konstantin Ritt <ritt.ks@gmail.com> | 2015-07-31 09:51:35 +0000 |
commit | 5e3e34731b7880ac775e8f1fa156ce016e6820f1 (patch) | |
tree | bc3ec374a3ddf40a59c3c0aeef7db91d385f4bce /src/gui | |
parent | 735cd0ccf3e51f9b3f0e9d30df08899ae54bf7ab (diff) |
Default implementation for QPlatformFontDatabase::fallbacksForFamily()
...mainly for platforms that do not provide a native/unified way
to obtain system-defined font fallbacks list
(ie !CoreText && !FontConfig).
Change-Id: I23c5589d79ddecb6311ccc52ec8b29977f06d408
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@theqtcompany.com>
Diffstat (limited to 'src/gui')
-rw-r--r-- | src/gui/text/qfontdatabase.cpp | 40 | ||||
-rw-r--r-- | src/gui/text/qplatformfontdatabase.cpp | 14 |
2 files changed, 46 insertions, 8 deletions
diff --git a/src/gui/text/qfontdatabase.cpp b/src/gui/text/qfontdatabase.cpp index af03778e22..40e61f42ec 100644 --- a/src/gui/text/qfontdatabase.cpp +++ b/src/gui/text/qfontdatabase.cpp @@ -756,6 +756,46 @@ QString qt_resolveFontFamilyAlias(const QString &alias) return alias; } +QStringList QPlatformFontDatabase::fallbacksForFamily(const QString &family, QFont::Style style, QFont::StyleHint styleHint, QChar::Script script) const +{ + Q_UNUSED(family); + Q_UNUSED(styleHint); + + QStringList retList; + + size_t writingSystem = std::find(scriptForWritingSystem, + scriptForWritingSystem + QFontDatabase::WritingSystemsCount, + script) - scriptForWritingSystem; + if (writingSystem >= QFontDatabase::WritingSystemsCount) + writingSystem = QFontDatabase::Any; + + QFontDatabasePrivate *db = privateDb(); + for (int i = 0; i < db->count; ++i) { + QtFontFamily *f = db->families[i]; + + f->ensurePopulated(); + + if (writingSystem > QFontDatabase::Any && f->writingSystems[writingSystem] != QtFontFamily::Supported) + continue; + + for (int j = 0; j < f->count; ++j) { + QtFontFoundry *foundry = f->foundries[j]; + + for (int k = 0; k < foundry->count; ++k) { + if (style == foundry->styles[k]->key.style) { + if (foundry->name.isEmpty()) + retList.append(f->name); + else + retList.append(f->name + QLatin1String(" [") + foundry->name + QLatin1Char(']')); + break; + } + } + } + } + + return retList; +} + QStringList qt_fallbacksForFamily(const QString &family, QFont::Style style, QFont::StyleHint styleHint, QChar::Script script) { // make sure that the db has all fallback families diff --git a/src/gui/text/qplatformfontdatabase.cpp b/src/gui/text/qplatformfontdatabase.cpp index 502348a79a..8764c8cebf 100644 --- a/src/gui/text/qplatformfontdatabase.cpp +++ b/src/gui/text/qplatformfontdatabase.cpp @@ -343,17 +343,15 @@ QFontEngine *QPlatformFontDatabase::fontEngine(const QByteArray &fontData, qreal } /*! + \fn QStringList QPlatformFontDatabase::fallbacksForFamily(const QString &family, QFont::Style style, QFont::StyleHint styleHint, QChar::Script script) const + Returns a list of alternative fonts for the specified \a family and \a style and \a script using the \a styleHint given. + + Default implementation returns a list of fonts for which \a style and \a script support + has been reported during the font database population. */ -QStringList QPlatformFontDatabase::fallbacksForFamily(const QString &family, QFont::Style style, QFont::StyleHint styleHint, QChar::Script script) const -{ - Q_UNUSED(family); - Q_UNUSED(style); - Q_UNUSED(styleHint); - Q_UNUSED(script); - return QStringList(); -} +// implemented in qfontdatabase.cpp /*! Adds an application font described by the font contained supplied \a fontData |