Sort out locale-dependent times

Signed-off-by: Jens Georg <mail@jensge.org>

https://bugzilla.gnome.org/show_bug.cgi?id=716533

Makefile.am

@@ -146,6 +146,7 @@ dist_noinst_DATA += \
 	plugins/shotwell-plugin-common.h \
 	vapi/gphoto.h \
 	vapi/LConv.vapi \
+	vapi/langinfo.vapi \
 	vapi/libexif.vapi \
 	vapi/libgphoto2.vapi \
 	vapi/libraw.vapi \

shotwell.am

@@ -16,7 +16,7 @@ shotwell_VALAFLAGS = $(COMMON_VALAFLAGS) \
 	--vapidir $(abs_top_srcdir)/vapi \
 	--pkg libgphoto2 --pkg posix --pkg LConv --pkg libraw --pkg gexiv2 \
 	--pkg libexif --pkg gudev-1.0 --pkg gstreamer-1.0 \
-	--pkg gstreamer-pbutils-1.0 \
+	--pkg gstreamer-pbutils-1.0 --pkg langinfo \
 	$(UNITY_VALAFLAGS) \
 	$(COMMON_VALAFLAGS_POST)
 

src/Resources.vala

@@ -770,13 +770,13 @@ along with Shotwell; if not, write to the Free Software Foundation, Inc.,
         /// Locale-specific time format for 12-hour time, i.e. 8:31 PM
         /// Precede modifier with a dash ("-") to pad with spaces, otherwise will pad with zeroes
         /// See http://developer.gnome.org/glib/2.32/glib-GDateTime.html#g-date-time-format
-        HH_MM_FORMAT_STRING = _("%-I:%M %p");
+        HH_MM_FORMAT_STRING = "%X";
         
         /// Locale-specific time format for 12-hour time with seconds, i.e. 8:31:42 PM
         /// Precede modifier with a dash ("-") to pad with spaces, otherwise will pad with zeroes
         /// See http://developer.gnome.org/glib/2.32/glib-GDateTime.html#g-date-time-format
-        HH_MM_SS_FORMAT_STRING = _("%-I:%M:%S %p");
-        
+        HH_MM_SS_FORMAT_STRING = Nl.langinfo (Nl.Item.T_FMT);
+
         /// Locale-specific calendar date format, i.e. "Tue Mar 08, 2006"
         /// See http://developer.gnome.org/glib/2.32/glib-GDateTime.html#g-date-time-format
         LONG_DATE_FORMAT_STRING = _("%a %b %d, %Y");

vapi/langinfo.vapi

+/* Copyright 2016 Jens Georg <mail@jensge.org>
+ *
+ * This software is licensed under the GNU LGPL (version 2.1 or later).
+ * See the COPYING file in this distribution.
+ */
+namespace Nl {
+    [CCode (cname="nl_item", cheader_filename = "langinfo.h")]
+    enum Item {
+        [CCode (cname="CODESET")]
+        CODESET,
+        [CCode (cname="D_T_FMT")]
+        D_T_FMT,
+        [CCode (cname="D_FMT")]
+        D_FMT,
+        [CCode (cname="T_FMT")]
+        T_FMT,
+        [CCode (cname="THOUSEP")]
+        THOUSEP,
+        [CCode (cname="RADIXCHAR")]
+        RADIXCHAR
+    }
+
+    [CCode (cheader_filename = "langinfo.h")]
+    static unowned string? langinfo (Item item);
+}