QWindowsFontDatabase: Check preferred family names for all fonts

The code was initially introduced in
9204b8c31ea1b5f0c05870c5b5d74c33b1a4f622 but getting the names were
conditioned on whether or not Windows identified it as a truetype font.
This excluded cases which had preferred names embedded but was not
truetype fonts. To fix that we run the code unconditionally.

[ChangeLog][Windows] Fixed a bug where some fonts would not be
accessible by referencing their typographic name.

Fixes: QTBUG-78556
Change-Id: I8823684b09cce3b1b8722b1e609a5bb49b13da13
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

3 files changed, 30 insertions, 0 deletions

diff --git a/tests/auto/gui/text/qfontdatabase/testdata.qrc b/tests/auto/gui/text/qfontdatabase/testdata.qrc
index 224e845601..a590099b20 100644
--- a/tests/auto/gui/text/qfontdatabase/testdata.qrc
+++ b/tests/auto/gui/text/qfontdatabase/testdata.qrc
@@ -4,5 +4,6 @@
         <file alias="testfont.ttf">../../../shared/resources/testfont.ttf</file>
         <file alias="testfont_condensed.ttf">../../../shared/resources/testfont_condensed.ttf</file>
         <file alias="testfont_italic.ttf">../../../shared/resources/testfont_italic.ttf</file>
+        <file alias="testfont_open.otf">../../../shared/resources/testfont_open.otf</file>
     </qresource>
 </RCC>
diff --git a/tests/auto/gui/text/qfontdatabase/tst_qfontdatabase.cpp b/tests/auto/gui/text/qfontdatabase/tst_qfontdatabase.cpp
index 2b69801b59..12e8083622 100644
--- a/tests/auto/gui/text/qfontdatabase/tst_qfontdatabase.cpp
+++ b/tests/auto/gui/text/qfontdatabase/tst_qfontdatabase.cpp
@@ -76,6 +76,9 @@ private slots:
     void rasterFonts();
     void smoothFonts();
 
+    void registerOpenTypePreferredNamesSystem();
+    void registerOpenTypePreferredNamesApplication();
+
 private:
     QString m_ledFont;
     QString m_testFont;
@@ -440,5 +443,31 @@ void tst_QFontDatabase::smoothFonts()
     QVERIFY(!QFontDatabase().isBitmapScalable(font.family()));
 }
 
+void tst_QFontDatabase::registerOpenTypePreferredNamesSystem()
+{
+    QFontDatabase db;
+    // This font family was picked because it was the only one I had installed which showcased the
+    // problem
+    if (!db.hasFamily(QString::fromLatin1("Source Code Pro ExtraLight")))
+        QSKIP("Source Code Pro ExtraLight is not installed");
+
+    QStringList styles = db.styles(QString::fromLatin1("Source Code Pro"));
+    QVERIFY(styles.contains(QLatin1String("ExtraLight")));
+}
+
+void tst_QFontDatabase::registerOpenTypePreferredNamesApplication()
+{
+    QFontDatabase db;
+
+    int id = QFontDatabase::addApplicationFont(QString::fromLatin1(":/testfont_open.otf"));
+    if (id == -1)
+        QSKIP("Skip the test since app fonts are not supported on this system");
+
+    QStringList styles = db.styles(QString::fromLatin1("QtBidiTestFont"));
+    QVERIFY(styles.contains(QLatin1String("Open")));
+
+    QFontDatabase::removeApplicationFont(id);
+}
+
 QTEST_MAIN(tst_QFontDatabase)
 #include "tst_qfontdatabase.moc"
diff --git a/tests/auto/shared/resources/testfont_open.otf b/tests/auto/shared/resources/testfont_open.otf
new file mode 100644
index 0000000000..0f7950f2dd
--- /dev/null
+++ b/tests/auto/shared/resources/testfont_open.otf