Refreshed the dictionaries.

Introduced a new localization macro L_CONTEXT(string, context)
to define context dependent translations.

The only strings - "Top" and "Bottom" were already using context, but
until now the context had to be added to the PrusaSlicer.pot file
manually, while the context is being generated automatically now.

CMakeLists.txt

@@ -368,7 +368,7 @@ target_include_directories(cereal INTERFACE include)
 # l10n
 set(L10N_DIR "${SLIC3R_RESOURCES_DIR}/localization")
 add_custom_target(pot
-    COMMAND xgettext --keyword=L --add-comments=TRN --from-code=UTF-8 --debug
+    COMMAND xgettext --keyword=L --keyword=L_CONTEXT:1,2c --add-comments=TRN --from-code=UTF-8 --debug
         -f "${L10N_DIR}/list.txt"
         -o "${L10N_DIR}/PrusaSlicer.pot"
     WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}

resources/localization/list.txt

@@ -24,6 +24,7 @@ src/slic3r/GUI/GUI_Preview.cpp
 src/slic3r/GUI/KBShortcutsDialog.cpp
 src/slic3r/GUI/MainFrame.cpp
 src/slic3r/GUI/MsgDialog.cpp
+src/slic3r/GUI/OptionsGroup.cpp
 src/slic3r/GUI/Plater.cpp
 src/slic3r/GUI/Preferences.cpp
 src/slic3r/GUI/Preset.cpp

src/slic3r/GUI/I18N.hpp

@@ -17,6 +17,10 @@
 #define L(s) s
 #endif /* L */
 
+#ifndef L_CONTEXT
+#define L_CONTEXT(s, context) s
+#endif /* L */
+
 #ifndef _CHB
 //! macro used to localization, return wxScopedCharBuffer
 //! With wxConvUTF8 explicitly specify that the source string is already in UTF-8 encoding

src/slic3r/GUI/OptionsGroup.cpp

@@ -246,7 +246,7 @@ void OptionsGroup::append_line(const Line& line, wxStaticText**	full_Label/* = n
 		// add label if any
 		if (option.label != "") {
 //!			To correct translation by context have to use wxGETTEXT_IN_CONTEXT macro from wxWidget 3.1.1
-			wxString str_label = (option.label == "Top" || option.label == "Bottom") ?
+			wxString str_label = (option.label == L_CONTEXT("Top", "Layers") || option.label == L_CONTEXT("Bottom", "Layers")) ?
 								_CTX(option.label, "Layers") :
 								_(option.label);
 			label = new wxStaticText(this->ctrl_parent(), wxID_ANY, str_label + ": ", wxDefaultPosition, wxDefaultSize);