fix: no translation for time in greeter

Set locale to the current user's locale when firstly entering system

Issue: linuxdeepin/developer-center#6994

src/session-widgets/lockcontent.cpp

@@ -19,6 +19,7 @@
 
 #include <QLocalSocket>
 #include <QMouseEvent>
+#include <qlocale.h>
 
 using namespace dss;
 using namespace dss::module;
@@ -78,6 +79,10 @@ LockContent::LockContent(SessionBaseModel *const model, QWidget *parent)
         }
     }
     once = true;
+
+    auto localeName = regionValue(localeName_key);
+    QLocale locale = localeName.isEmpty()? QLocale::system() : QLocale(localeName);
+    m_timeWidget->updateLocale(locale);
 }
 
 void LockContent::initUI()
@@ -217,7 +222,8 @@ void LockContent::onValueChanged(const QDBusMessage &dbusMessage)
     } else if (interfaceName == longDateFormat_key) {
         m_longDateFormat = regionValue(longDateFormat_key);
     }
-    m_timeWidget->updateLocale(QLocale(m_localeName), m_shortTimeFormat, m_longDateFormat);
+    QLocale locale = m_localeName.isEmpty() ? QLocale::system() : QLocale(m_localeName);
+    m_timeWidget->updateLocale(locale, m_shortTimeFormat, m_longDateFormat);
 }
 
 QString LockContent::configPath(std::shared_ptr<User> user) const
@@ -294,7 +300,7 @@ void LockContent::onCurrentUserChanged(std::shared_ptr<User> user)
     m_user = user;
 
     m_localeName = regionValue(localeName_key);
-    QLocale locale = m_localeName.isEmpty()? QLocale::system() : QLocale(m_localeName);
+    QLocale locale = m_localeName.isEmpty()? user->locale() : QLocale(m_localeName);
     m_shortTimeFormat = regionValue(shortTimeFormat_key);
     m_longDateFormat = regionValue(longDateFormat_key);
     buildConnect();