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-rw-r--r--src/gui/text/qfontdatabase.cpp35
1 files changed, 35 insertions, 0 deletions
diff --git a/src/gui/text/qfontdatabase.cpp b/src/gui/text/qfontdatabase.cpp
index afbf783c3a..8998516d4d 100644
--- a/src/gui/text/qfontdatabase.cpp
+++ b/src/gui/text/qfontdatabase.cpp
@@ -2845,6 +2845,41 @@ QString QFontDatabase::resolveFontFamilyAlias(const QString &family)
return QGuiApplicationPrivate::platformIntegration()->fontDatabase()->resolveFontFamilyAlias(family);
}
+Q_GUI_EXPORT QStringList qt_sort_families_by_writing_system(QChar::Script script, const QStringList &families)
+{
+ size_t writingSystem = std::find(scriptForWritingSystem,
+ scriptForWritingSystem + QFontDatabase::WritingSystemsCount,
+ script) - scriptForWritingSystem;
+ if (writingSystem == QFontDatabase::Any
+ || writingSystem >= QFontDatabase::WritingSystemsCount) {
+ return families;
+ }
+
+ QFontDatabasePrivate *db = privateDb();
+ QMultiMap<uint, QString> supported;
+ for (int i = 0; i < families.size(); ++i) {
+ const QString &family = families.at(i);
+
+ QtFontFamily *testFamily = nullptr;
+ for (int x = 0; x < db->count; ++x) {
+ if (Q_UNLIKELY(matchFamilyName(family, db->families[x]))) {
+ testFamily = db->families[x];
+ testFamily->ensurePopulated();
+ break;
+ }
+ }
+
+ uint order = i;
+ if (testFamily == nullptr
+ || (testFamily->writingSystems[writingSystem] & QtFontFamily::Supported) == 0) {
+ order |= 1 << 31;
+ }
+
+ supported.insert(order, family);
+ }
+
+ return supported.values();
+}
QT_END_NAMESPACE