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>

3 files changed, 23 insertions, 36 deletions

diff --git a/main.cpp b/main.cpp
index c7d916c9c..0d53a5acf 100644
--- a/main.cpp
+++ b/main.cpp
@@ -13,22 +13,13 @@
 
 #include <QStringList>
 
+QTranslator *qtTranslator, *ssrfTranslator;
+
 int main(int argc, char **argv)
 {
 	int i;
 	bool no_filenames = true;
-#if 0
-	const char *path;
 
-	/* set up l18n - the search directory needs to change
-	 * so that it uses the correct system directory when
-	 * subsurface isn't run from the local directory */
-	path = subsurface_gettext_domainpath(argv[0]);
-	setlocale(LC_ALL, "");
-	bindtextdomain("subsurface", path);
-	bind_textdomain_codeset("subsurface", "utf-8");
-	textdomain("subsurface");
-#endif
 	setup_system_prefs();
 	prefs = default_prefs;
 
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");
diff --git a/qthelper.h b/qthelper.h
index 0ab184b78..cd0d8affa 100644
--- a/qthelper.h
+++ b/qthelper.h
@@ -5,6 +5,10 @@
 #include <QString>
 #include <stdint.h>
 #include "dive.h"
+#include <QTranslator>
+
+// global pointers for our translation
+extern QTranslator *qtTranslator, *ssrfTranslator;
 
 class DiveComputerNode {
 public: