Add embedded gettext support from resource.

23 files changed, 976 insertions, 92 deletions

diff --git a/configure.ac b/configure.ac
index 123e884..1151ad1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -127,7 +127,7 @@ AC_LANG_POP([C++])
 dnl ===========================
 dnl Set up debug compile args if the user requested it
 dnl ===========================
-AS_IF([test "x$with_debug" == "xyes"],
+AS_IF([test "x$with_debug" = "xyes"],
       [AC_MSG_WARN([*** Building with debug support!])
 	     DEBUG_FLAGS="-Wall -Werror -g $NO_UNDEFINED_PARAM"
 	     HUGIN_PARM=""]
@@ -136,6 +136,26 @@ AC_SUBST(DEBUG_FLAGS)
 
 CXXFLAGS="$CXXFLAGS $HUGIN_PARM"
 
+
+dnl ===========================
+dnl Enable/disable NLS support
+dnl ===========================
+AC_ARG_WITH([nls],
+            AS_HELP_STRING([--with-nls],
+                           [Build with nls support (default nls enabled)]),
+            [],
+            [with_nls=yes])
+            AS_IF([test "x$with_nls" == "xyes"],
+                  [AC_MSG_RESULT([*** Building with nls support!])
+                   AC_CHECK_PROGS([XGETTEXT], [xgettext])
+                   AC_CHECK_PROGS([MSGMERGE], [msgmerge])
+                   AC_CHECK_PROGS([MSGFMT], [msgfmt])
+                   AC_DEFINE_UNQUOTED([WITH_NLS], , [Build with nls support])],
+                  [AC_MSG_WARN([*** Building without nls support!])]
+)
+AM_CONDITIONAL([WITH_NLS], [test "x$with_nls" = "xyes"])
+
+
 dnl ===========================
 dnl Check for GUI backend
 dnl ===========================
@@ -690,6 +710,7 @@ AC_CONFIG_FILES(
 	plugin/Makefile
 	plugin/vst/Makefile
 	plugingui/Makefile
+	plugingui/locale/Makefile
 	man/Makefile
 	test/Makefile
 	test/dgreftest/Makefile
diff --git a/plugin/Makefile.am b/plugin/Makefile.am
index 91786c2..f382acc 100644
--- a/plugin/Makefile.am
+++ b/plugin/Makefile.am
@@ -36,7 +36,8 @@ drumgizmo_la_LDFLAGS = -shared -module -avoid-version \
 
 drumgizmo_la_LIBADD = $(LV2_LIBS) \
 	$(top_builddir)/plugingui/libdggui.la \
-	$(top_builddir)/src/libdg.la
+	$(top_builddir)/src/libdg.la \
+	$(top_builddir)/src/libnls.la
 
 ttlgen_CPPFLAGS = \
 	$(DEBUG_FLAGS) \
@@ -108,9 +109,11 @@ drumgizmo_vst_la_SOURCES = \
 drumgizmo_vst_la_LDFLAGS = -shared -module -avoid-version \
 	-no-undefined -export-symbols $(top_srcdir)/plugin/drumgizmo_vst.sym
 
-drumgizmo_vst_la_LIBADD = vst/libvstsdk.la \
+drumgizmo_vst_la_LIBADD = \
+	vst/libvstsdk.la \
 	$(top_builddir)/plugingui/libdggui.la \
-	$(top_builddir)/src/libdg.la
+	$(top_builddir)/src/libdg.la \
+	$(top_builddir)/src/libnls.la
 
 
 install-data-hook:
diff --git a/plugin/Makefile.mingw32.in b/plugin/Makefile.mingw32.in
index fad7960..e58abc4 100644
--- a/plugin/Makefile.mingw32.in
+++ b/plugin/Makefile.mingw32.in
@@ -47,6 +47,7 @@ DG_SRC = \
 	@top_srcdir@/src/sem.cc \
 	@top_srcdir@/src/staminafilter.cc \
 	@top_srcdir@/src/thread.cc \
+	@top_srcdir@/src/translation.cc \
 	@top_srcdir@/src/velocityfilter.cc \
 	@top_srcdir@/src/versionstr.cc
 DG_CFLAGS = -I@top_srcdir@ -I@top_srcdir@/src \
@@ -108,6 +109,7 @@ GUI_SRC = \
 	@top_srcdir@/plugingui/timingframecontent.cc \
 	@top_srcdir@/plugingui/toggle.cc \
 	@top_srcdir@/plugingui/tooltip.cc \
+	@top_srcdir@/plugingui/uitranslation.cc \
 	@top_srcdir@/plugingui/utf8.cc \
 	@top_srcdir@/plugingui/verticalline.cc \
 	@top_srcdir@/plugingui/visualizerframecontent.cc \
@@ -143,39 +145,45 @@ SRC = \
 	drumgizmo_plugin.cc
 
 RES = \
-	resources/bg.png \
-	resources/bypass_button.png \
-	resources/font.png \
-	resources/fontemboss.png \
-	resources/help_button.png \
-	resources/knob.png \
-	resources/logo.png \
-	resources/png_error \
-	resources/progress.png \
-	resources/pushbutton.png \
-	resources/sidebar.png \
-	resources/slider.png \
-	resources/stddev_horizontal.png \
-	resources/stddev_horizontal_disabled.png \
-	resources/stddev_vertical.png \
-	resources/stddev_vertical_disabled.png \
-	resources/switch_back_off.png \
-	resources/switch_back_on.png \
-	resources/switch_front.png \
-	resources/tab.png \
-	resources/thinlistbox.png \
-	resources/topbar.png \
-	resources/toplogo.png \
-	resources/vertline.png \
-	resources/widget.png \
-	../ABOUT \
-	../AUTHORS \
-	../BUGS \
-	../COPYING
+	@top_srcdir@/plugingui/resources/bg.png \
+	@top_srcdir@/plugingui/resources/bypass_button.png \
+	@top_srcdir@/plugingui/resources/font.png \
+	@top_srcdir@/plugingui/resources/fontemboss.png \
+	@top_srcdir@/plugingui/resources/help_button.png \
+	@top_srcdir@/plugingui/resources/knob.png \
+	@top_srcdir@/plugingui/resources/logo.png \
+	@top_srcdir@/plugingui/resources/png_error \
+	@top_srcdir@/plugingui/resources/progress.png \
+	@top_srcdir@/plugingui/resources/pushbutton.png \
+	@top_srcdir@/plugingui/resources/sidebar.png \
+	@top_srcdir@/plugingui/resources/slider.png \
+	@top_srcdir@/plugingui/resources/stddev_horizontal.png \
+	@top_srcdir@/plugingui/resources/stddev_horizontal_disabled.png \
+	@top_srcdir@/plugingui/resources/stddev_vertical.png \
+	@top_srcdir@/plugingui/resources/stddev_vertical_disabled.png \
+	@top_srcdir@/plugingui/resources/switch_back_off.png \
+	@top_srcdir@/plugingui/resources/switch_back_on.png \
+	@top_srcdir@/plugingui/resources/switch_front.png \
+	@top_srcdir@/plugingui/resources/tab.png \
+	@top_srcdir@/plugingui/resources/thinlistbox.png \
+	@top_srcdir@/plugingui/resources/topbar.png \
+	@top_srcdir@/plugingui/resources/toplogo.png \
+	@top_srcdir@/plugingui/resources/vertline.png \
+	@top_srcdir@/plugingui/resources/widget.png \
+	@top_srcdir@/plugingui/../ABOUT \
+	@top_srcdir@/plugingui/../AUTHORS \
+	@top_srcdir@/plugingui/../BUGS \
+	@top_srcdir@/plugingui/../COPYING
+
+NLS_RES = \
+	@top_builddir@/plugingui/locale/da.mo \
+	@top_builddir@/plugingui/locale/fr.mo
 
 all:
+	(cd @top_srcdir@/plugingui/locale; msgfmt -c -v -o da.mo da.po)
+	(cd @top_srcdir@/plugingui/locale; msgfmt -c -v -o fr.mo fr.po)
 	g++ -I@top_srcdir@/getoptpp @top_srcdir@/plugingui/rcgen.cc -o @top_srcdir@/plugingui/rcgen
-	(cd @top_srcdir@/plugingui; ./rcgen $(RES) > resource_data.cc)
+	@top_srcdir@/plugingui/rcgen -s @top_srcdir@/plugingui/ -s @top_builddir@/plugingui/ $(RES) $(NLS_RES) -o @top_srcdir@/plugingui/resource_data.cc
 	g++ $(CXXFLAGS) @top_srcdir@/plugingui/resource_data.cc -c
 	gcc $(CFLAGS) $(DBG_CFLAGS) @top_srcdir@/hugin/hugin.c -c
 	gcc $(CFLAGS) $(DBG_CFLAGS) @top_srcdir@/hugin/hugin_syslog.c -c
diff --git a/plugin/drumgizmo_plugin.h b/plugin/drumgizmo_plugin.h
index 1f91fbc..521ec86 100644
--- a/plugin/drumgizmo_plugin.h
+++ b/plugin/drumgizmo_plugin.h
@@ -26,6 +26,8 @@
  */
 #pragma once
 
+#include <config.h>
+
 #include <memory>
 
 #ifdef LV2
@@ -37,6 +39,7 @@
 #endif
 
 #include <drumgizmo.h>
+#include <uitranslation.h>
 #include <audioinputenginemidi.h>
 #include <audiooutputengine.h>
 #include <mainwindow.h>
@@ -214,4 +217,8 @@ private:
 
 	static constexpr std::size_t width{750};
 	static constexpr std::size_t height{713};
+
+#ifdef WITH_NLS
+	UITranslation translation;
+#endif // WITH_NLS
 };
diff --git a/plugingui/Makefile.am b/plugingui/Makefile.am
index cb49d53..64f0125 100644
--- a/plugingui/Makefile.am
+++ b/plugingui/Makefile.am
@@ -1,44 +1,78 @@
+SUBDIRS = locale
+DISTDIRS = locale
+
 noinst_PROGRAMS = plugingui rcgen
 noinst_LTLIBRARIES = libdggui.la
 
 # If you add a file here, remember to add it to plugin/Makefile.mingw32.in
 RES = \
-	resources/bg.png \
-	resources/bypass_button.png \
-	resources/font.png \
-	resources/fontemboss.png \
-	resources/help_button.png \
-	resources/knob.png \
-	resources/logo.png \
-	resources/png_error \
-	resources/progress.png \
-	resources/pushbutton.png \
-	resources/sidebar.png \
-	resources/slider.png \
-	resources/stddev_horizontal.png \
-	resources/stddev_horizontal_disabled.png \
-	resources/stddev_vertical.png \
-	resources/stddev_vertical_disabled.png \
-	resources/switch_back_off.png \
-	resources/switch_back_on.png \
-	resources/switch_front.png \
-	resources/tab.png \
-	resources/thinlistbox.png \
-	resources/topbar.png \
-	resources/toplogo.png \
-	resources/vertline.png \
-	resources/widget.png \
-	../ABOUT \
-	../AUTHORS \
-	../BUGS \
-	../COPYING
+	$(top_srcdir)/plugingui/resources/bg.png \
+	$(top_srcdir)/plugingui/resources/bypass_button.png \
+	$(top_srcdir)/plugingui/resources/font.png \
+	$(top_srcdir)/plugingui/resources/fontemboss.png \
+	$(top_srcdir)/plugingui/resources/help_button.png \
+	$(top_srcdir)/plugingui/resources/knob.png \
+	$(top_srcdir)/plugingui/resources/logo.png \
+	$(top_srcdir)/plugingui/resources/png_error \
+	$(top_srcdir)/plugingui/resources/progress.png \
+	$(top_srcdir)/plugingui/resources/pushbutton.png \
+	$(top_srcdir)/plugingui/resources/sidebar.png \
+	$(top_srcdir)/plugingui/resources/slider.png \
+	$(top_srcdir)/plugingui/resources/stddev_horizontal.png \
+	$(top_srcdir)/plugingui/resources/stddev_horizontal_disabled.png \
+	$(top_srcdir)/plugingui/resources/stddev_vertical.png \
+	$(top_srcdir)/plugingui/resources/stddev_vertical_disabled.png \
+	$(top_srcdir)/plugingui/resources/switch_back_off.png \
+	$(top_srcdir)/plugingui/resources/switch_back_on.png \
+	$(top_srcdir)/plugingui/resources/switch_front.png \
+	$(top_srcdir)/plugingui/resources/tab.png \
+	$(top_srcdir)/plugingui/resources/thinlistbox.png \
+	$(top_srcdir)/plugingui/resources/topbar.png \
+	$(top_srcdir)/plugingui/resources/toplogo.png \
+	$(top_srcdir)/plugingui/resources/vertline.png \
+	$(top_srcdir)/plugingui/resources/widget.png \
+	$(top_srcdir)/plugingui/../ABOUT \
+	$(top_srcdir)/plugingui/../AUTHORS \
+	$(top_srcdir)/plugingui/../BUGS \
+	$(top_srcdir)/plugingui/../COPYING
+
+if WITH_NLS
+$(top_srcdir)/plugingui/locale/drumgizmo.pot: $(GUI_SRC)
+	(cd $(top_srcdir)/plugingui/; $(XGETTEXT) --package-name "$(PACKAGE)" --package-version "$(VERSION)" --copyright-holder="DrumGizmo Team" -k_ -o locale/drumgizmo.pot $(GUI_SRC) )
+	grep -v '"POT-Creation-Date:' $(top_srcdir)/plugingui/locale/drumgizmo.pot > $(top_srcdir)/plugingui/locale/drumgizmo.pot.tmp
+	mv $(top_srcdir)/plugingui/locale/drumgizmo.pot.tmp $(top_srcdir)/plugingui/locale/drumgizmo.pot
+
+NLS_RES = \
+	$(top_builddir)/plugingui/locale/da.mo \
+	$(top_builddir)/plugingui/locale/fr.mo
+
+# NOTE: Manually create initial (new) .po file with msginit
+$(top_srcdir)/plugingui/locale/da.po \
+$(top_srcdir)/plugingui/locale/fr.po: locale/drumgizmo.pot
+	$(MSGMERGE) --update $@ $(top_srcdir)/plugingui/locale/drumgizmo.pot
+
+$(top_builddir)/plugingui/locale/da.mo: $(top_srcdir)/plugingui/locale/da.po
+	$(MSGFMT) -c -v -o $@ $(top_srcdir)/plugingui/locale/da.po
+
+$(top_builddir)/plugingui/locale/fr.mo: $(top_srcdir)/plugingui/locale/fr.po
+	$(MSGFMT) -c -v -o $@ $(top_srcdir)/plugingui/locale/fr.po
+
+endif
 
 rcgen_verbose = $(rcgen_verbose_@AM_V@)
 rcgen_verbose_ = $(rcgen_verbose_@AM_DEFAULT_V@)
 rcgen_verbose_0 = @echo "  RCGEN    "$@;
 
-$(top_builddir)/plugingui/resource_data.cc: rcgen$(EXEEXT) $(RES)
-	$(rcgen_verbose)./rcgen$(EXEEXT) -d $(top_srcdir)/plugingui -o $@ $(RES)
+BUILT_SOURCES = \
+	resource_data.cc \
+	$(NLS_RES)
+
+resource_data.cc: rcgen$(EXEEXT) $(RES) $(NLS_RES)
+	$(rcgen_verbose)./rcgen$(EXEEXT) -s $(top_srcdir)/plugingui/ -s $(top_builddir)/plugingui/ -o $@ $(RES) $(NLS_RES)
+
+CLEANFILES = \
+	resource_data.cc \
+	$(NLS_RES)
 
 libdggui_la_CPPFLAGS = \
 	$(DEBUG_FLAGS) \
@@ -61,7 +95,7 @@ libdggui_la_LIBADD = \
 	$(GUI_LIBS) $(PTHREAD_LIBS)
 
 # If you add a file here, remember to add it to plugin/Makefile.mingw32.in
-nodist_libdggui_la_SOURCES = \
+GUI_SRC = \
 	abouttab.cc \
 	bleedcontrolframecontent.cc \
 	button.cc \
@@ -113,12 +147,18 @@ nodist_libdggui_la_SOURCES = \
 	timingframecontent.cc \
 	toggle.cc \
 	tooltip.cc \
+	uitranslation.cc \
 	utf8.cc \
 	verticalline.cc \
 	visualizerframecontent.cc \
 	widget.cc \
-	window.cc \
-	lodepng/lodepng.cpp \
+	window.cc
+
+libdggui_la_SOURCES = \
+	$(GUI_SRC) \
+	lodepng/lodepng.cpp
+
+nodist_libdggui_la_SOURCES = \
 	$(top_builddir)/plugingui/resource_data.cc
 
 if ENABLE_X11
@@ -169,7 +209,10 @@ libdggui_la_CPPFLAGS += \
 	-I$(top_srcdir)/pugl
 endif
 
-plugingui_LDADD = libdggui.la $(top_builddir)/src/libdg.la
+plugingui_LDADD = \
+	libdggui.la \
+	$(top_builddir)/src/libdg.la \
+	$(top_builddir)/src/libnls.la
 
 plugingui_CXXFLAGS = \
 	$(DEBUG_FLAGS) \
@@ -190,7 +233,6 @@ rcgen_SOURCES = \
 	rcgen.cc
 
 EXTRA_DIST = \
-	$(nodist_libdggui_la_SOURCES) \
 	$(RES) \
 	abouttab.h \
 	bleedcontrolframecontent.h \
@@ -257,6 +299,7 @@ EXTRA_DIST = \
 	timingframecontent.h \
 	toggle.h \
 	tooltip.h \
+	uitranslation.h \
 	utf8.h \
 	verticalline.h \
 	visualizerframecontent.h \
diff --git a/plugingui/locale/Makefile.am b/plugingui/locale/Makefile.am
new file mode 100644
index 0000000..a5d93bb
--- /dev/null
+++ b/plugingui/locale/Makefile.am
@@ -0,0 +1,4 @@
+EXTRA_DIST = \
+	drumgizmo.pot \
+	da.po \
+	fr.po
diff --git a/plugingui/locale/da.po b/plugingui/locale/da.po
new file mode 100644
index 0000000..579b3c3
--- /dev/null
+++ b/plugingui/locale/da.po
@@ -0,0 +1,72 @@
+# Danish translations for drumgizmo package
+# Danske oversættelser for pakke drumgizmo.
+# Copyright (C) 2019 THE drumgizmo'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the drumgizmo package.
+# Automatically generated, 2019.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: drumgizmo 0.9.17\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2019-09-13 21:07+0200\n"
+"PO-Revision-Date: 2019-09-13 19:42+0200\n"
+"Last-Translator: Automatically generated\n"
+"Language-Team: none\n"
+"Language: da\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=ISO-8859-1\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+#: maintab.cc:121 mainwindow.cc:56
+msgid "Drumkit"
+msgstr ""
+
+#: maintab.cc:122
+msgid "Status"
+msgstr ""
+
+#: maintab.cc:123
+msgid "Resampling"
+msgstr ""
+
+#: maintab.cc:124
+msgid "Disk Streaming"
+msgstr ""
+
+#: maintab.cc:125
+msgid "Bleed Control"
+msgstr ""
+
+#: maintab.cc:127
+msgid "Velocity Humanizer"
+msgstr ""
+
+#: maintab.cc:129
+msgid "Timing Humanizer"
+msgstr ""
+
+#: maintab.cc:131
+msgid "Sample Selection"
+msgstr ""
+
+#: maintab.cc:134
+msgid "Visualizer"
+msgstr ""
+
+#: maintab.cc:136
+#, fuzzy
+msgid "Velocity Curve"
+msgstr ""
+
+#: mainwindow.cc:51
+msgid "DrumGizmo v"
+msgstr ""
+
+#: mainwindow.cc:55
+msgid "Main"
+msgstr ""
+
+#: mainwindow.cc:58
+msgid "About"
+msgstr ""
diff --git a/plugingui/locale/drumgizmo.pot b/plugingui/locale/drumgizmo.pot
new file mode 100644
index 0000000..5fcce8b
--- /dev/null
+++ b/plugingui/locale/drumgizmo.pot
@@ -0,0 +1,69 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) 2020 DrumGizmo Team
+# This file is distributed under the same license as the drumgizmo package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: drumgizmo 0.9.19\n"
+"Report-Msgid-Bugs-To: \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"
+
+#: maintab.cc:121 mainwindow.cc:56
+msgid "Drumkit"
+msgstr ""
+
+#: maintab.cc:122
+msgid "Status"
+msgstr ""
+
+#: maintab.cc:123
+msgid "Resampling"
+msgstr ""
+
+#: maintab.cc:124
+msgid "Disk Streaming"
+msgstr ""
+
+#: maintab.cc:125
+msgid "Bleed Control"
+msgstr ""
+
+#: maintab.cc:127
+msgid "Velocity Humanizer"
+msgstr ""
+
+#: maintab.cc:129
+msgid "Timing Humanizer"
+msgstr ""
+
+#: maintab.cc:131
+msgid "Sample Selection"
+msgstr ""
+
+#: maintab.cc:134
+msgid "Visualizer"
+msgstr ""
+
+#: maintab.cc:136
+msgid "Velocity Curve"
+msgstr ""
+
+#: mainwindow.cc:51
+msgid "DrumGizmo v"
+msgstr ""
+
+#: mainwindow.cc:55
+msgid "Main"
+msgstr ""
+
+#: mainwindow.cc:58
+msgid "About"
+msgstr ""
diff --git a/plugingui/locale/fr.po b/plugingui/locale/fr.po
new file mode 100644
index 0000000..6582266
--- /dev/null
+++ b/plugingui/locale/fr.po
@@ -0,0 +1,71 @@
+# Danish translations for drumgizmo package
+# Danske oversættelser for pakke drumgizmo.
+# Copyright (C) 2019 THE drumgizmo'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the drumgizmo package.
+# Automatically generated, 2019.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: drumgizmo 0.9.17\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2019-09-13 21:07+0200\n"
+"PO-Revision-Date: 2019-09-09 16:21+0200\n"
+"Last-Translator: Automatically generated\n"
+"Language-Team: none\n"
+"Language: da\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=ISO-8859-1\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+#: maintab.cc:121 mainwindow.cc:56
+msgid "Drumkit"
+msgstr ""
+
+#: maintab.cc:122
+msgid "Status"
+msgstr ""
+
+#: maintab.cc:123
+msgid "Resampling"
+msgstr ""
+
+#: maintab.cc:124
+msgid "Disk Streaming"
+msgstr ""
+
+#: maintab.cc:125
+msgid "Bleed Control"
+msgstr ""
+
+#: maintab.cc:127
+msgid "Velocity Humanizer"
+msgstr ""
+
+#: maintab.cc:129
+msgid "Timing Humanizer"
+msgstr ""
+
+#: maintab.cc:131
+msgid "Sample Selection"
+msgstr ""
+
+#: maintab.cc:134
+msgid "Visualizer"
+msgstr ""
+
+#: maintab.cc:136
+msgid "Velocity Curve"
+msgstr ""
+
+#: mainwindow.cc:51
+msgid "DrumGizmo v"
+msgstr ""
+
+#: mainwindow.cc:55
+msgid "Main"
+msgstr ""
+
+#: mainwindow.cc:58
+msgid "About"
+msgstr ""
diff --git a/plugingui/maintab.cc b/plugingui/maintab.cc
index 771e0d2..5b5555f 100644
--- a/plugingui/maintab.cc
+++ b/plugingui/maintab.cc
@@ -26,6 +26,8 @@
  */
 #include "maintab.h"
 
+#include <translation.h>
+
 namespace
 {
 
@@ -116,22 +118,22 @@ MainTab::MainTab(Widget* parent,
 	layout.setSpacing(0);
 	layout.setResizeChildren(true);
 
-	add("Drumkit", drumkit_frame, drumkitframe_content, 12, 0);
-	add("Status", status_frame, statusframe_content, 14, 0);
-	add("Resampling", resampling_frame, resamplingframe_content, 9, 0);
-	add("Disk Streaming", diskstreaming_frame, diskstreamingframe_content, 7, 0);
-	add("Bleed Control", bleedcontrol_frame, bleedcontrolframe_content, 7, 0);
+	add(_("Drumkit"), drumkit_frame, drumkitframe_content, 12, 0);
+	add(_("Status"), status_frame, statusframe_content, 14, 0);
+	add(_("Resampling"), resampling_frame, resamplingframe_content, 9, 0);
+	add(_("Disk Streaming"), diskstreaming_frame, diskstreamingframe_content, 7, 0);
+	add(_("Bleed Control"), bleedcontrol_frame, bleedcontrolframe_content, 7, 0);
 
-	add("Velocity Humanizer", humanizer_frame, humanizerframe_content, 8, 1);
+	add(_("Velocity Humanizer"), humanizer_frame, humanizerframe_content, 8, 1);
 	humanizer_frame.setHelpText(humanizer_tip);
-	add("Timing Humanizer", timing_frame, timingframe_content, 8, 1);
+	add(_("Timing Humanizer"), timing_frame, timingframe_content, 8, 1);
 	timing_frame.setHelpText(timing_tip);
-	add("Sample Selection", sampleselection_frame,
+	add(_("Sample Selection"), sampleselection_frame,
 	    sampleselectionframe_content, 8, 1);
 	sampleselection_frame.setHelpText(sampleselection_tip);
-	add("Visualizer", visualizer_frame, visualizerframe_content, 8, 1);
+	add(_("Visualizer"), visualizer_frame, visualizerframe_content, 8, 1);
 	visualizer_frame.setHelpText(visualizer_tip);
-	add("Velocity Curve", power_frame, powerframe_content, 17, 1);
+	add(_("Velocity Curve"), power_frame, powerframe_content, 17, 1);
 	power_frame.setHelpText(power_tip);
 
 	humanizer_frame.setOnSwitch(settings.enable_velocity_modifier);
diff --git a/plugingui/mainwindow.cc b/plugingui/mainwindow.cc
index a625bc3..932e8f3 100644
--- a/plugingui/mainwindow.cc
+++ b/plugingui/mainwindow.cc
@@ -26,11 +26,13 @@
  */
 #include "mainwindow.h"
 
+#include <string>
+
 #include <config.h>
 
-#include "painter.h"
+#include <translation.h>
 
-#include <string>
+#include "painter.h"
 
 namespace GUI
 {
@@ -46,14 +48,14 @@ MainWindow::MainWindow(Settings& settings, void* native_window)
 	CONNECT(this, sizeChangeNotifier, this, &MainWindow::sizeChanged);
 	CONNECT(eventHandler(), closeNotifier, this, &MainWindow::closeEventHandler);
 
-	setCaption("DrumGizmo v" VERSION);
+	setCaption(std::string(_("DrumGizmo v")) + VERSION);
 
 	tabs.setTabWidth(100);
 	tabs.move(16, 0); // x-offset to make room for the left side bar.
-	tabs.addTab("Main", &main_tab);
-	drumkit_tab_id = tabs.addTab("Drumkit", &drumkit_tab);
+	tabs.addTab(_("Main"), &main_tab);
+	drumkit_tab_id = tabs.addTab(_("Drumkit"), &drumkit_tab);
 	changeDrumkitTabVisibility(false); // Hide while no kit is loaded
-	tabs.addTab("About", &about_tab);
+	tabs.addTab(_("About"), &about_tab);
 
 	CONNECT(&drumkit_tab, imageChangeNotifier,
 	        this, &MainWindow::changeDrumkitTabVisibility);
diff --git a/plugingui/resource.cc b/plugingui/resource.cc
index 3462317..44f5540 100644
--- a/plugingui/resource.cc
+++ b/plugingui/resource.cc
@@ -77,7 +77,7 @@ Resource::Resource(const std::string& name)
 
 		// Find internal resource in rc_data.
 		const rc_data_t* p = rc_data;
-		while(p->name[0] != '\0') // last entry in rc_data has the name := ""
+		while(*p->name) // last entry in rc_data has the name := ""
 		{
 			if(name == p->name)
 			{
diff --git a/plugingui/testmain.cc b/plugingui/testmain.cc
index 91effc4..1195ceb 100644
--- a/plugingui/testmain.cc
+++ b/plugingui/testmain.cc
@@ -29,12 +29,19 @@
 
 #include <hugin.hpp>
 #include <settings.h>
+#include <config.h>
 
 #include "mainwindow.h"
 #include "window.h"
+#include "resource.h"
+#include "uitranslation.h"
 
 int main()
 {
+#ifdef WITH_NLS
+	UITranslation translation;
+#endif // WITH_NLS
+
 	INFO(example, "We are up and running");
 
 	void* native_window_handle{nullptr};
diff --git a/plugingui/uitranslation.cc b/plugingui/uitranslation.cc
new file mode 100644
index 0000000..0546be8
--- /dev/null
+++ b/plugingui/uitranslation.cc
@@ -0,0 +1,51 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ *            uitranslation.cc
+ *
+ *  Thu May  7 18:04:40 CEST 2020
+ *  Copyright 2020 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "uitranslation.h"
+
+#ifdef WITH_NLS
+
+#include "resource.h"
+
+UITranslation::UITranslation()
+{
+	auto lang = Translation::getISO639LanguageName();
+	printf("LANG: %s\n", lang.data());
+	std::string res = ":locale/";
+	res += lang + ".mo";
+
+	GUI::Resource mo(res);
+	if(!mo.valid())
+	{
+		printf("Locale not in resources - use default\n");
+		// Locale not in resources - use default
+		return;
+	}
+	printf("Using mo: %s\n", res.data());
+	load(mo.data(), mo.size());
+}
+
+#endif // WITH_NLS
diff --git a/plugingui/uitranslation.h b/plugingui/uitranslation.h
new file mode 100644
index 0000000..5341255
--- /dev/null
+++ b/plugingui/uitranslation.h
@@ -0,0 +1,41 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ *            uitranslation.h
+ *
+ *  Thu May  7 18:04:40 CEST 2020
+ *  Copyright 2020 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#pragma once
+
+#include <config.h>
+
+#include <translation.h>
+
+#ifdef WITH_NLS
+class UITranslation
+	: public Translation
+{
+public:
+	UITranslation();
+	~UITranslation() = default;
+};
+#endif
diff --git a/src/Makefile.am b/src/Makefile.am
index f2a392d..b656f48 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,4 +1,11 @@
-noinst_LTLIBRARIES = libdg.la libzr.la libpugi.la
+noinst_LTLIBRARIES = libdg.la libzr.la libpugi.la libnls.la
+
+# shared nls component
+
+libnls_la_CPPFLAGS =
+libnls_la_LIBADD =
+libnls_la_SOURCES = \
+	translation.cc
 
 # libzita-resampler
 
@@ -129,6 +136,7 @@ EXTRA_DIST = \
 	staminafilter.h \
 	syncedsettings.h \
 	thread.h \
+	translation.h \
 	velocityfilter.h \
 	versionstr.h \
 	zrwrapper.h
diff --git a/src/translation.cc b/src/translation.cc
new file mode 100644
index 0000000..18763e4
--- /dev/null
+++ b/src/translation.cc
@@ -0,0 +1,287 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ *            translation.cc
+ *
+ *  Sun Sep  8 14:13:22 CEST 2019
+ *  Copyright 2019 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "translation.h"
+
+#ifdef WITH_NLS
+
+#include <locale.h>
+#include <vector>
+#include <mutex>
+#include <string>
+#include <atomic>
+#include <algorithm>
+#include <utility>
+
+#ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#endif
+
+namespace
+{
+using Text = std::pair<std::uint64_t, std::string>;
+using Texts = std::vector<Text>;
+
+struct
+{
+	std::mutex mutex;
+	int refcnt{0};
+	Texts texts;
+} singleton;
+
+
+bool comparator(const Text& a, const Text& b)
+{
+	return a.first < b.first;
+}
+}
+
+Translation::Translation()
+{
+	std::lock_guard<std::mutex>(singleton.mutex);
+	++singleton.refcnt;
+}
+
+Translation::~Translation()
+{
+	std::lock_guard<std::mutex>(singleton.mutex);
+
+	--singleton.refcnt;
+
+	if(singleton.refcnt == 0)
+	{
+		singleton.texts.clear();
+	}
+}
+
+bool Translation::load(const char* catalog, std::size_t size)
+{
+	Texts texts;
+
+	// https://www.gnu.org/software/gettext/manual/html_node/MO-Files.html
+
+	//         byte
+	//              +------------------------------------------+
+	//           0  | magic number = 0x950412de                |
+	//              |                                          |
+	//           4  | file format revision = 0                 |
+	//              |                                          |
+	//           8  | number of strings                        |  == N
+	//              |                                          |
+	//          12  | offset of table with original strings    |  == O
+	//              |                                          |
+	//          16  | offset of table with translation strings |  == T
+	//              |                                          |
+	//          20  | size of hashing table                    |  == S
+	//              |                                          |
+	//          24  | offset of hashing table                  |  == H
+	//              |                                          |
+	//              .                                          .
+	//              .    (possibly more entries later)         .
+	//              .                                          .
+	//              |                                          |
+	//           O  | length & offset 0th string  ----------------.
+	//       O + 8  | length & offset 1st string  ------------------.
+	//               ...                                    ...   | |
+	// O + ((N-1)*8)| length & offset (N-1)th string           |  | |
+	//              |                                          |  | |
+	//           T  | length & offset 0th translation  ---------------.
+	//       T + 8  | length & offset 1st translation  -----------------.
+	//               ...                                    ...   | | | |
+	// T + ((N-1)*8)| length & offset (N-1)th translation      |  | | | |
+	//              |                                          |  | | | |
+	//           H  | start hash table                         |  | | | |
+	//               ...                                    ...   | | | |
+	//   H + S * 4  | end hash table                           |  | | | |
+	//              |                                          |  | | | |
+	//              | NUL terminated 0th string  <----------------' | | |
+	//              |                                          |    | | |
+	//              | NUL terminated 1st string  <------------------' | |
+	//              |                                          |      | |
+	//               ...                                    ...       | |
+	//              |                                          |      | |
+	//              | NUL terminated 0th translation  <---------------' |
+	//              |                                          |        |
+	//              | NUL terminated 1st translation  <-----------------'
+	//              |                                          |
+	//               ...                                    ...
+	//              |                                          |
+	//              +------------------------------------------+
+	constexpr std::uint32_t magic_number_le = 0x950412de;
+	constexpr std::uint32_t magic_number_be = 0xde120495;
+
+	const char* ptr = catalog;
+
+	// Verify magic number
+	std::uint32_t magic_number = *reinterpret_cast<const std::uint32_t*>(ptr);
+	if(magic_number != magic_number_le && magic_number != magic_number_be)
+	{
+		// Error - bad magic number
+		return false;
+	}
+	ptr += sizeof(magic_number);
+
+	// Verify file format revision
+	std::uint32_t file_format_revision =
+		*reinterpret_cast<const std::uint32_t*>(ptr);
+	if(file_format_revision != 0)
+	{
+		// Error - bad file format revision
+		return false;
+	}
+	ptr += sizeof(file_format_revision);
+
+	// Read number of string in the catalog
+	std::uint32_t number_of_strings =
+		*reinterpret_cast<const std::uint32_t*>(ptr);
+	ptr += sizeof(number_of_strings);
+
+	// Read orig_table_offset
+	std::uint32_t orig_table_offset =
+		*reinterpret_cast<const std::uint32_t*>(ptr);
+	ptr += sizeof(orig_table_offset);
+
+	// Read transl_table_offset
+	std::uint32_t transl_table_offset =
+		*reinterpret_cast<const std::uint32_t*>(ptr);
+	ptr += sizeof(transl_table_offset);
+
+	// Read hash_table_size
+	std::uint32_t hash_table_size =
+		*reinterpret_cast<const std::uint32_t*>(ptr);
+	ptr += sizeof(hash_table_size);
+
+	// Read hash_table_offset
+	std::uint32_t hash_table_offset =
+		*reinterpret_cast<const std::uint32_t*>(ptr);
+	ptr += sizeof(hash_table_offset);
+
+
+	// Read original/translated string tables:
+	const char* orig_ptr = catalog + orig_table_offset;
+	const char* transl_ptr = catalog + transl_table_offset;
+	for(std::uint32_t string_index = 0;
+	    string_index < number_of_strings; ++string_index)
+	{
+		// Read string_length
+		std::uint32_t orig_string_length =
+			*reinterpret_cast<const std::uint32_t*>(orig_ptr);
+		orig_ptr += sizeof(orig_string_length);
+
+		// Read string_offset
+		std::uint32_t orig_string_offset =
+			*reinterpret_cast<const std::uint32_t*>(orig_ptr);
+		orig_ptr += sizeof(orig_string_offset);
+
+		std::string orig;
+		orig.append(catalog + orig_string_offset, orig_string_length);
+
+		// Read string_length
+		std::uint32_t transl_string_length =
+			*reinterpret_cast<const std::uint32_t*>(transl_ptr);
+		transl_ptr += sizeof(transl_string_length);
+
+		// Read string_offset
+		std::uint32_t transl_string_offset =
+			*reinterpret_cast<const std::uint32_t*>(transl_ptr);
+		transl_ptr += sizeof(transl_string_offset);
+
+		std::string transl;
+		transl.append(catalog + transl_string_offset, transl_string_length);
+
+		texts.push_back(make_pair(const_hash(orig.data()), transl));
+	}
+
+	std::sort(texts.begin(), texts.end(), comparator);
+
+	{
+		std::lock_guard<std::mutex>(singleton.mutex);
+		std::swap(singleton.texts, texts);
+	}
+
+	return true;
+}
+
+const char* Translation::gettext(std::uint64_t msgid, const char* original)
+{
+	std::lock_guard<std::mutex>(singleton.mutex);
+	if(singleton.refcnt == 0)
+	{
+		return original;
+	}
+
+	auto it = std::lower_bound(singleton.texts.begin(),
+	                           singleton.texts.end(),
+	                           make_pair(msgid, std::string()), comparator);
+	if(it == singleton.texts.end() ||
+	   it->first != msgid)
+	{
+		return original;
+	}
+
+	return it->second.data();
+}
+
+std::string Translation::getISO639LanguageName()
+{
+	std::string lang;
+
+#ifdef _WIN32
+	LCID lcid = GetUserDefaultLCID();
+	char name[LOCALE_NAME_MAX_LENGTH];
+	GetLocaleInfo(lcid, LOCALE_SISO639LANGNAME, name, LOCALE_NAME_MAX_LENGTH);
+	lang = name;
+#else
+	try
+	{
+		auto langstr = setlocale(LC_ALL, "");
+		if(langstr != nullptr)
+		{
+			lang = langstr;
+		}
+	}
+	catch(...)
+	{
+		// Bad locale: don't load anything - use default
+		printf("Bad locale: don't load anything - use default\n");
+		return "";
+	}
+
+	if(lang == "C")
+	{
+		printf("Don't load anything - use default\n");
+		return ""; // Don't load anything - use default
+	}
+
+	auto _ = lang.find('_');
+	lang = lang.substr(0, _);
+#endif
+
+	return lang;
+}
+
+#endif // WITH_NLS
diff --git a/src/translation.h b/src/translation.h
new file mode 100644
index 0000000..7f506a6
--- /dev/null
+++ b/src/translation.h
@@ -0,0 +1,60 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ *            translation.h
+ *
+ *  Sun Sep  8 14:13:22 CEST 2019
+ *  Copyright 2019 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#pragma once
+
+#include <config.h>
+
+#ifdef WITH_NLS
+
+#include <memory>
+
+std::uint64_t constexpr const_hash(const char* input)
+{
+	return *input ?
+		static_cast<unsigned int>(*input) + 33 * const_hash(input + 1) :
+		5381;
+}
+
+#define _(msg) Translation::gettext(const_hash(msg), msg)
+
+class Translation
+{
+public:
+	Translation();
+	virtual ~Translation();
+
+	bool load(const char* catalog, std::size_t size);
+
+	static const char* gettext(std::uint64_t msgid, const char* original);
+	static std::string getISO639LanguageName();
+};
+
+#else
+
+#define _(msg) msg
+
+#endif
diff --git a/test/Makefile.am b/test/Makefile.am
index c9ece6e..372b57f 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -10,11 +10,16 @@ TESTS = resource enginetest paintertest configfile audiocache \
 	dgxmlparsertest domloadertest configparsertest midimapparsertest \
 	eventsdstest powermaptest
 
+if WITH_NLS
+TESTS += translationtest
+endif
+
 EXTRA_DIST = \
 	dgunit.h \
 	drumkit_creator.h \
 	lv2_test_host.h \
-	scopedfile.h
+	scopedfile.h \
+	locale/da.mo
 
 if ENABLE_LV2
 TESTS += lv2
@@ -25,11 +30,13 @@ check_PROGRAMS = $(TESTS)
 resource_CXXFLAGS = -DOUTPUT=\"resource\" $(SNDFILE_CFLAGS) \
 	$(DEBUG_FLAGS) \
 	-I$(top_srcdir)/src \
+	-I$(top_srcdir)/plugingui \
 	-I$(top_srcdir)/hugin
 resource_LDFLAGS = $(SNDFILE_LIBS)
+nodist_resource_SOURCES = \
+	$(top_builddir)/plugingui/resource_data.cc
 resource_SOURCES = \
 	$(top_srcdir)/plugingui/resource.cc \
-	$(top_srcdir)/plugingui/resource_data.cc \
 	$(top_srcdir)/hugin/hugin.c \
 	$(top_srcdir)/src/random.cc \
 	dgtest.cc \
@@ -279,4 +286,35 @@ powermaptest_SOURCES = \
 	powermaptest.cc \
 	dgtest.cc
 
+RES = \
+	$(top_srcdir)/test/locale/da.mo
+
+rcgen_verbose = $(rcgen_verbose_@AM_V@)
+rcgen_verbose_ = $(rcgen_verbose_@AM_DEFAULT_V@)
+rcgen_verbose_0 = @echo "  RCGEN    "$@;
+
+translationtest_resource_data.cc: $(top_builddir)/plugingui/rcgen $(RES)
+	$(rcgen_verbose)$(top_builddir)/plugingui/rcgen$(EXEEXT) -s $(top_srcdir)/test/ -o $@ $(RES)
+
+translationtest_CXXFLAGS = \
+	-DOUTPUT=\"translationtest\" \
+	-I$(top_srcdir)/plugingui \
+	-I$(top_srcdir)/src \
+	-I$(top_srcdir)/hugin \
+	-DMO_SRC=\"$(top_srcdir)/test/locale/da.mo\" \
+	-Wno-invalid-source-encoding
+translationtest_LDFLAGS =
+nodist_translationtest_SOURCES = \
+	$(top_builddir)/test/translationtest_resource_data.cc
+translationtest_SOURCES = \
+	$(top_srcdir)/hugin/hugin.c \
+	$(top_srcdir)/plugingui/resource.cc \
+	$(top_srcdir)/src/translation.cc \
+	$(top_srcdir)/plugingui/uitranslation.cc \
+	translationtest.cc \
+	dgtest.cc
+
+BUILT_SOURCES = translationtest_resource_data.cc
+CLEANFILES = translationtest_resource_data.cc
+
 endif
diff --git a/test/locale/da.mo b/test/locale/da.mo
new file mode 100644
index 0000000..13eeaca
--- /dev/null
+++ b/test/locale/da.mo
diff --git a/test/resource_test.cc b/test/resource_test.cc
index 28a244e..1beae94 100644
--- a/test/resource_test.cc
+++ b/test/resource_test.cc
@@ -86,6 +86,11 @@ public:
 			ResourceTester rc("no_such_file");
 			DGUNIT_ASSERT(!rc.valid());
 		}
+
+		{
+			ResourceTester rc(":no_such_file");
+			DGUNIT_ASSERT(!rc.valid());
+		}
 	}
 };
 
diff --git a/test/translationtest.cc b/test/translationtest.cc
new file mode 100644
index 0000000..f64e1f3
--- /dev/null
+++ b/test/translationtest.cc
@@ -0,0 +1,80 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ *            translationtest.cc
+ *
+ *  Sun Sep  8 14:51:08 CEST 2019
+ *  Copyright 2019 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "dgunit.h"
+
+#include <locale>
+
+#include <translation.h>
+#include <uitranslation.h>
+#include <stdlib.h>
+
+class TranslationTest
+	: public DGUnit
+{
+public:
+	TranslationTest()
+	{
+		DGUNIT_TEST(TranslationTest::testFromFile);
+		DGUNIT_TEST(TranslationTest::testFromLocale);
+	}
+
+	void testFromFile()
+	{
+		Translation t;
+		char buf[100000];
+		FILE* fp = fopen(MO_SRC, "r");
+		DGUNIT_ASSERT(fp != nullptr);
+		auto sz = fread(buf, 1, sizeof(buf), fp);
+		fclose(fp);
+		DGUNIT_ASSERT(t.load(buf, sz));
+
+		// Look up translation from .mo file
+		DGUNIT_ASSERT_EQUAL(std::string("Trommesæt"),
+		                    std::string(_("Drumkit")));
+
+		// No translation, return key
+		DGUNIT_ASSERT_EQUAL(std::string("No translation"),
+		                    std::string(_("No translation")));
+	}
+
+	void testFromLocale()
+	{
+		setenv("LANG", "da_DK.UTF-8", 1);
+		UITranslation t;
+
+		// Look up translation from .mo file
+		DGUNIT_ASSERT_EQUAL(std::string("Trommesæt"),
+		                    std::string(_("Drumkit")));
+
+		// No translation, return key
+		DGUNIT_ASSERT_EQUAL(std::string("No translation"),
+		                    std::string(_("No translation")));
+	}
+};
+
+// Registers the fixture into the 'registry'
+static TranslationTest test;
diff --git a/test/uitests/Makefile.am b/test/uitests/Makefile.am
index a5e6d01..b28682f 100644
--- a/test/uitests/Makefile.am
+++ b/test/uitests/Makefile.am
@@ -55,7 +55,7 @@ rcgen_verbose = $(rcgen_verbose_@AM_V@)
 rcgen_verbose_ = $(rcgen_verbose_@AM_DEFAULT_V@)
 rcgen_verbose_0 = @echo "  RCGEN    "$@;
 
-$(top_builddir)/test/uitests/benchmarktest_resource_data.cc: $(top_builddir)/plugingui/rcgen $(RES)
+benchmarktest_resource_data.cc: $(top_builddir)/plugingui/rcgen $(RES)
 	$(rcgen_verbose)$(top_builddir)/plugingui/rcgen$(EXEEXT) -d $(top_srcdir)/test/uitests -o $@ $(RES)
 
 benchmarktest_LDADD = \
@@ -65,11 +65,16 @@ benchmarktest_CXXFLAGS = \
 	-I$(top_srcdir)/plugingui \
 	-I$(top_srcdir)/src \
 	-I$(top_srcdir)/hugin
+nodist_benchmarktest_SOURCES = \
+	benchmarktest_resource_data.cc
 benchmarktest_SOURCES = \
 	benchmarktest.cc \
-	$(top_builddir)/test/uitests/benchmarktest_resource_data.cc \
 	$(top_srcdir)/hugin/hugin.c
 
+BUILT_SOURCES = benchmarktest_resource_data.cc
+CLEANFILES = benchmarktest_resource_data.cc
+
+
 powerwidgettest_LDADD = \
 	$(top_builddir)/plugingui/libdggui.la \
 	$(top_builddir)/src/libdg.la