Add po support

This enables us to use translations

meson.build

@@ -68,6 +68,6 @@ configure_file(
 
 gnome = import('gnome')
 
-subdir('src')
 subdir('data')
-
+subdir('po')
+subdir('src')

po/POTFILES.in

+src/background.c
+src/favorites.c
+src/lockscreen.c
+src/menu.c
+src/panel.c
+src/phosh.c
+src/settings.c
+src/ui/settings-menu.ui
+src/ui/top-panel.ui

po/meson.build

+i18n = import('i18n')
+i18n.gettext('phosh', preset : 'glib')

po/phosh.pot

+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the phosh package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: phosh\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2018-04-01 18:31+0200\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=CHARSET\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: src/ui/settings-menu.ui:120
+msgid "Rotation"
+msgstr ""

src/phosh.c

@@ -12,9 +12,12 @@
 #include <string.h>
 
 #include <glib-object.h>
+#include <glib/gi18n.h>
 #include <gtk/gtk.h>
 #include <gdk/gdkwayland.h>
 
+#include "config.h"
+
 #include "phosh-mobile-shell-client-protocol.h"
 
 #include "phosh.h"
@@ -562,6 +565,10 @@ phosh ()
 
 int main(int argc, char *argv[])
 {
+  textdomain (GETTEXT_PACKAGE);
+  bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
+  bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
+
   gtk_init (&argc, &argv);
 
   g_object_new (PHOSH_TYPE_SHELL, NULL);