Fix Japan locale not showing japanese fonts correctly

Fallback font determination did not take locale into account when
Japanese locale was used. Android devices show Chinese fonts instead.
Fixes the problem by prepending japanese defaut "Noto Sans Mono CJK ..."
type font before other fonts. Does same for Chinese and Korean locales.

Fixes: QTBUG-111528
Pick-to: 6.5 6.2 5.15
Change-Id: I70994c0059c3819eeb09dacb9bbe6634490ecf37
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
(cherry picked from commit 476e8f8aef52592d3908b9d5cf6711af7a7d631d)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
This commit is contained in:
Lauri Pohjanheimo 2023-11-06 16:45:24 +02:00 committed by Qt Cherry-pick Bot
parent 2c58f1770a
commit c6a86b6164

View File

@ -2,6 +2,7 @@
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include <QDir>
#include <QLocale>
#include "qandroidplatformfontdatabase.h"
@ -47,6 +48,38 @@ QStringList QAndroidPlatformFontDatabase::fallbacksForFamily(const QString &fami
QChar::Script script) const
{
QStringList result;
// Prepend CJK fonts by the locale.
QLocale locale = QLocale::system();
switch (locale.language()) {
case QLocale::Chinese: {
switch (locale.territory()) {
case QLocale::China:
case QLocale::Singapore:
result.append(QStringLiteral("Noto Sans Mono CJK SC"));
break;
case QLocale::Taiwan:
case QLocale::HongKong:
case QLocale::Macao:
result.append(QStringLiteral("Noto Sans Mono CJK TC"));
break;
default:
// no modifications.
break;
}
break;
}
case QLocale::Japanese:
result.append(QStringLiteral("Noto Sans Mono CJK JP"));
break;
case QLocale::Korean:
result.append(QStringLiteral("Noto Sans Mono CJK KR"));
break;
default:
// no modifications.
break;
}
if (styleHint == QFont::Monospace || styleHint == QFont::Courier)
result.append(QString(qgetenv("QT_ANDROID_FONTS_MONOSPACE")).split(u';'));
else if (styleHint == QFont::Serif)