Qt: Dynamic languages

- get language as soon as possible (before creating any Qt objects) to make all
  translations working
- dynamic list of supported languages
- runtime change of GUI language (no need to restart application)
- add flags icons support
- search for *.qm languages in buildin resources, then
  data dir called "languages" (main directory in sources or
  /usr/share/wireshark/languages), then user directory
  (UNIX: ~/.wireshark/languages); "languages" directory should contains
  files wireshark_xx.qm where xx is language code (en, en_GB, etc.),
  and optional xx.svg for flag icon
- try to fix some untranslated manually-created UI items
  (need manual reset text of those components)

Change-Id: I62ca8a8cddce47cec9dbcad6b0bd68b6cfd92229
Reviewed-on: https://code.wireshark.org/review/5041
Tested-by: Michal Labedzki <michal.labedzki@tieto.com>
Reviewed-by: Michal Labedzki <michal.labedzki@tieto.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/ui/qt/capture_interfaces_dialog.cpp b/ui/qt/capture_interfaces_dialog.cpp
index 3da8e79a05..34f305174d 100644
--- a/ui/qt/capture_interfaces_dialog.cpp
+++ b/ui/qt/capture_interfaces_dialog.cpp
@@ -851,6 +851,22 @@ void CaptureInterfacesDialog::on_manage_clicked()
     }
 }
 
+void CaptureInterfacesDialog::changeEvent(QEvent* event)
+{
+    if (0 != event)
+    {
+        switch (event->type())
+        {
+        case QEvent::LanguageChange:
+            ui->retranslateUi(this);
+            break;
+        default:
+            break;
+        }
+    }
+    QDialog::changeEvent(event);
+}
+
 //
 // InterfaceTreeItem
 //