Add german translation

pi2-view/data/pi2-view.glade

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Generated with glade 3.22.1 -->
-<interface>
+<interface domain="pi2-view">
   <requires lib="gtk+" version="3.20"/>
   <object class="GtkWindow">
     <property name="can_focus">False</property>
@@ -31,7 +31,7 @@
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
                     <property name="halign">start</property>
-                    <property name="label" translatable="yes">Scale:</property>
+                    <property name="label" translatable="yes" context="Label for ComboBox">Zoom Level</property>
                   </object>
                   <packing>
                     <property name="left_attach">0</property>
@@ -61,7 +61,7 @@
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
                     <property name="halign">start</property>
-                    <property name="label" translatable="yes">Time:  </property>
+                    <property name="label" translatable="yes" context="Label for digital clock">Simulation Time</property>
                   </object>
                   <packing>
                     <property name="left_attach">0</property>
@@ -73,7 +73,7 @@
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
                     <property name="halign">start</property>
-                    <property name="label" translatable="yes">00:00</property>
+                    <property name="label">00:00</property>
                     <attributes>
                       <attribute name="font-desc" value="Monospace 10"/>
                     </attributes>
@@ -99,7 +99,7 @@
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
                     <property name="halign">start</property>
-                    <property name="label" translatable="yes">Drives on: </property>
+                    <property name="label" translatable="yes" context="Driving on $lane">Driving on</property>
                   </object>
                   <packing>
                     <property name="left_attach">0</property>
@@ -111,7 +111,7 @@
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
                     <property name="halign">start</property>
-                    <property name="label" translatable="yes">lane</property>
+                    <property name="label" translatable="yes" context="Placeholder for lane name">Lane</property>
                   </object>
                   <packing>
                     <property name="left_attach">1</property>
@@ -123,7 +123,7 @@
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
                     <property name="halign">start</property>
-                    <property name="label" translatable="yes">Position on Lane: </property>
+                    <property name="label" translatable="yes" context="Label for percentage">Completion of Lane</property>
                   </object>
                   <packing>
                     <property name="left_attach">0</property>
@@ -135,7 +135,7 @@
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
                     <property name="halign">start</property>
-                    <property name="label" translatable="yes">  0 %</property>
+                    <property name="label">  0 %</property>
                     <attributes>
                       <attribute name="font-desc" value="Monospace 10"/>
                     </attributes>
@@ -150,7 +150,7 @@
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
                     <property name="halign">start</property>
-                    <property name="label" translatable="yes">Speed: </property>
+                    <property name="label" translatable="yes" context="Label for speed in km/h">Speed</property>
                   </object>
                   <packing>
                     <property name="left_attach">0</property>
@@ -162,7 +162,7 @@
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
                     <property name="halign">start</property>
-                    <property name="label" translatable="yes">0.00 km/h</property>
+                    <property name="label">0.00 km/h</property>
                     <attributes>
                       <attribute name="font-desc" value="Monospace 10"/>
                     </attributes>
@@ -177,7 +177,7 @@
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
                     <property name="halign">start</property>
-                    <property name="label" translatable="yes">Remaining fuel: </property>
+                    <property name="label" translatable="yes" context="Label for fuel in l">Remaining Fuel</property>
                   </object>
                   <packing>
                     <property name="left_attach">0</property>
@@ -189,7 +189,7 @@
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
                     <property name="halign">start</property>
-                    <property name="label" translatable="yes">0.00 l</property>
+                    <property name="label">0.00 l</property>
                     <attributes>
                       <attribute name="font-desc" value="Monospace 10"/>
                     </attributes>

pi2-view/meson.build

+subdir('po')
 pi2_view_inc = include_directories('include')
 pi2_view_src = files(
     'src/Drawable.cpp',

pi2-view/po/LINGUAS

+# keep this file sorted alphabetically, one language code per line
+de

pi2-view/po/POTFILES.in

+pi2-view/data/pi2-view.glade

pi2-view/po/de.po

+# German pi2-view translation.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: pi2-view\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2019-03-27 15:34+0100\n"
+"Language: de\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: pi2-view/data/pi2-view.glade:34
+msgctxt "Label for ComboBox"
+msgid "Zoom Level"
+msgstr "Vergrößerungsstufe"
+
+#: pi2-view/data/pi2-view.glade:64
+msgctxt "Label for digital clock"
+msgid "Simulation Time"
+msgstr "Simulationszeit"
+
+#: pi2-view/data/pi2-view.glade:102
+msgctxt "Driving on $lane"
+msgid "Driving on"
+msgstr "Fährt auf"
+
+#: pi2-view/data/pi2-view.glade:114
+msgctxt "Placeholder for lane name"
+msgid "Lane"
+msgstr "Spur"
+
+#: pi2-view/data/pi2-view.glade:126
+msgctxt "Label for percentage"
+msgid "Completion of Lane"
+msgstr "Absolvierung der Spur"
+
+#: pi2-view/data/pi2-view.glade:153
+msgctxt "Label for speed in km/h"
+msgid "Speed"
+msgstr "Geschwindigkeit"
+
+#: pi2-view/data/pi2-view.glade:180
+msgctxt "Label for fuel in l"
+msgid "Remaining Fuel"
+msgstr "Verbleibender Treibstoff"

pi2-view/po/meson.build

+i18n = import('i18n')
+# define GETTEXT_PACKAGE
+add_project_arguments('-DGETTEXT_PACKAGE="pi2-view"', language:'c')
+i18n.gettext(meson.project_name(),
+  args: '--directory=' + meson.source_root()
+)

pi2-view/src/MapWindow.cpp

@@ -35,8 +35,9 @@ MapWindow::MapWindow(std::string windowTitle)
       remainingFuelLabel(nullptr), zoomComboBoxText(nullptr) {
   set_title(std::move(windowTitle));
 
-  auto builder =
-      Gtk::Builder::create_from_resource("/pi2-view/pi2-view.glade", "box");
+  auto builder = Gtk::Builder::create();
+  builder->set_translation_domain("pi2-view");
+  builder->add_from_resource("/pi2-view/pi2-view.glade", "box");
   Gtk::Box *box;
   builder->get_widget("box", box);