Load translations at run time

This doesn't enable translation switching, but at least we try and load
the correct translation at startup.

We create two global pointers for the currently active translations.

This also removes the remainders of the gettext()/glib based translation
system.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 17 insertions, 25 deletions

diff --git a/qt-gui.cpp b/qt-gui.cpp
index 08eb9d538..5127b7ba8 100644
--- a/qt-gui.cpp
+++ b/qt-gui.cpp
@@ -36,6 +36,7 @@
 #include <QNetworkProxy>
 #include <QDateTime>
 #include <QRegExp>
+#include <QLibraryInfo>
 
 #include <gettextfromc.h>
 #define tr(arg) gettextFromC::instance()->tr(arg)
@@ -45,31 +46,6 @@ const char *default_dive_computer_product;
 const char *default_dive_computer_device;
 DiveComputerList dcList;
 
-#if 0
-class Translator: public QTranslator
-{
-	Q_OBJECT
-
-public:
-	Translator(QObject *parent = 0);
-	~Translator() {}
-
-	virtual QString	translate(const char *context, const char *sourceText,
-				  const char *disambiguation = NULL) const;
-};
-
-Translator::Translator(QObject *parent):
-	QTranslator(parent)
-{
-}
-
-QString Translator::translate(const char *context, const char *sourceText,
-			      const char *disambiguation) const
-{
-	return gettext(sourceText);
-}
-#endif
-
 static QApplication *application = NULL;
 static MainWindow *window = NULL;
 
@@ -108,6 +84,22 @@ void init_ui(int *argcp, char ***argvp)
 	QCoreApplication::setApplicationName("Subsurface");
 	xslt_path = strdup(getSubsurfaceDataPath("xslt").toAscii().data());
 
+	QLocale loc;
+	if (loc.uiLanguages().first() != "en-US") {
+		qtTranslator = new QTranslator;
+		if (qtTranslator->load(loc,"qt", "_", QLibraryInfo::location(QLibraryInfo::TranslationsPath))) {
+			application->installTranslator(qtTranslator);
+		} else {
+			qDebug() << "can't find Qt localization for locale" << loc.uiLanguages().first();
+		}
+		ssrfTranslator = new QTranslator;
+		if (ssrfTranslator->load(loc,"subsurface", "_")) {
+			application->installTranslator(ssrfTranslator);
+		} else {
+			qDebug() << "can't find Subsurface localization for locale" << loc.uiLanguages().first();
+		}
+	}
+
 	QSettings s;
 	s.beginGroup("GeneralSettings");
 	prefs.default_filename = getSetting(s, "default_filename");