Save language preset.

* Added global variable g_local_dir to get "localization" directory.
* Chage/Set language works correctly now.
* Probably, fixed work on Linux

lib/Slic3r.pm

@@ -43,6 +43,7 @@ use FindBin;
 # Let the XS module know where the GUI resources reside.
 set_resources_dir(decode_path($FindBin::Bin) . (($^O eq 'darwin') ? '/../Resources' : '/resources'));
 set_var_dir(resources_dir() . "/icons");
+set_local_dir(resources_dir() . "/localization/");
 
 use Moo 1.003001;
 

lib/Slic3r/GUI.pm

@@ -150,7 +150,6 @@ sub OnInit {
 
 sub recreate_GUI{
     my ($self) = @_;
-    print "Inside recreate_GUI \n";
     my $topwindow = $self->GetTopWindow();
     $self->{mainframe} = my $frame = Slic3r::GUI::MainFrame->new(
         # If set, the "Controller" tab for the control of the printer over serial line and the serial port settings are hidden.

xs/src/libslic3r/Utils.hpp

@@ -19,8 +19,11 @@ std::string var(const std::string &file_name);
 void set_resources_dir(const std::string &path);
 // Return a full path to the resources directory.
 const std::string& resources_dir();
+
+// Set a path with GUI localization files.
+void set_local_dir(const std::string &path);
 // Return a full path to the localization directory.
-std::string localization_dir();
+const std::string& localization_dir();
 
 // Set a path with preset files.
 void set_data_dir(const std::string &path);

xs/src/libslic3r/utils.cpp

@@ -103,9 +103,16 @@ const std::string& resources_dir()
     return g_resources_dir;
 }
 
-std::string localization_dir()
+static std::string g_local_dir;
+
+void set_local_dir(const std::string &dir)
 {
-	return resources_dir() + "\\localization\\";
+    g_local_dir = dir;
+}
+
+const std::string& localization_dir()
+{
+	return g_local_dir;
 }
 
 static std::string g_data_dir;

xs/src/slic3r/GUI/GUI.cpp

@@ -35,7 +35,7 @@
 #include "Tab.hpp"
 #include "TabIface.hpp"
 #include "AppConfig.hpp"
-//#include <wx/config.h>
+#include <wx/config.h>
 #include <wx/dir.h>
 #include <wx/filename.h>
 #include "Utils.hpp"
@@ -168,8 +168,7 @@ wxNotebook  *g_wxTabPanel   = nullptr;
 
 std::vector<Tab *> g_tabs_list;
 
-wxLocale*		m_Locale;
+wxLocale*	g_wxLocale;
-std::string		m_local_dir;
 
 void set_wxapp(wxApp *app)
 {
@@ -211,17 +210,27 @@ bool select_language(wxArrayString & names,
 {
 	wxCHECK_MSG(names.Count() == identifiers.Count(), false,
 		_L("Array of language names and identifiers should have the same size."));
-	long index = wxGetSingleChoiceIndex(_L("Select the language"),
+	int init_selection = 0;
-		_L("Language"), names);
+	long current_language = g_wxLocale ? g_wxLocale->GetLanguage() : wxLANGUAGE_UNKNOWN;
+	for (auto lang : identifiers){
+		if (lang == current_language)
+			break;
+		else
+			++init_selection;
+	}
+	if (init_selection == identifiers.size())
+		init_selection = 0;
+	long index = wxGetSingleChoiceIndex(_L("Select the language"), _L("Language"), 
+										names, init_selection);
 	if (index != -1)
 	{
-		m_Locale = new wxLocale;
+		g_wxLocale = new wxLocale;
-		m_Locale->Init(identifiers[index]);
+		g_wxLocale->Init(identifiers[index]);
-		m_Locale->AddCatalogLookupPathPrefix(wxPathOnly(m_local_dir));
+		g_wxLocale->AddCatalogLookupPathPrefix(wxPathOnly(localization_dir()));
 		wxLogTrace(wxTraceMask(),
 			_L("Slic3rPE: Path Prefix = \"%s\""),
-			wxPathOnly(m_local_dir).GetData());
+			wxPathOnly(localization_dir()).GetData());
-		m_Locale->AddCatalog(g_wxApp->GetAppName());
+		g_wxLocale->AddCatalog(g_wxApp->GetAppName());
 		wxLogTrace(wxTraceMask(),
 			_L("Slic3rPE: Catalog Name = \"%s\""),
 			g_wxApp->GetAppName().GetData());
@@ -232,44 +241,41 @@ bool select_language(wxArrayString & names,
 
 bool load_language()
 {
-// 	wxConfig config(g_wxApp->GetAppName());
+	wxConfig config(g_wxApp->GetAppName());
 	long language;
-// 	if (!config.Read(wxT("wxTranslation_Language"),
+	if (!config.Read(wxT("wxTranslation_Language"),
-// 		&language, wxLANGUAGE_UNKNOWN))
+		&language, wxLANGUAGE_UNKNOWN))
 	{
-		language = wxLANGUAGE_ENGLISH_US;// wxLANGUAGE_UKRAINIAN;// wxLANGUAGE_UNKNOWN;
+		language = wxLANGUAGE_UNKNOWN;
 	}
-	if (language == wxLANGUAGE_UNKNOWN) return false;
+	if (language == wxLANGUAGE_UNKNOWN) 
-	wxArrayString names;
+		return false;
-	wxArrayLong identifiers;
+	wxArrayString	names;
+	wxArrayLong		identifiers;
 	get_installed_languages(names, identifiers);
 	for (size_t i = 0; i < identifiers.Count(); i++)
 	{
 		if (identifiers[i] == language)
 		{
-			m_Locale = new wxLocale;
+			g_wxLocale = new wxLocale;
-			m_Locale->Init(identifiers[i]);
+			g_wxLocale->Init(identifiers[i]);
-			m_Locale->AddCatalogLookupPathPrefix(wxPathOnly(m_local_dir));
+			g_wxLocale->AddCatalogLookupPathPrefix(wxPathOnly(localization_dir()));
-			m_Locale->AddCatalog(g_wxApp->GetAppName());
+			g_wxLocale->AddCatalog(g_wxApp->GetAppName());
 			return true;
 		}
 	}
 	return false;
 }
 
-void save_language(bool bReset)
+void save_language()
 {
-//	wxConfig config(g_wxApp->GetAppName());
+	wxConfig config(g_wxApp->GetAppName());
 	long language = wxLANGUAGE_UNKNOWN;
-	if (!bReset)
+	if (g_wxLocale)	{
-	{
+		language = g_wxLocale->GetLanguage();
-		if (m_Locale)
-		{
-			language = m_Locale->GetLanguage();
-		}
 	}
-// 	config.Write(wxT("wxTranslation_Language"), language);
+	config.Write(wxT("wxTranslation_Language"), language);
-// 	config.Flush();
+	config.Flush();
 }
 
 void get_installed_languages(wxArrayString & names,
@@ -277,9 +283,8 @@ void get_installed_languages(wxArrayString & names,
 {
 	names.Clear();
 	identifiers.Clear();
-	m_local_dir = localization_dir();
 
-	wxDir dir(wxPathOnly(m_local_dir));
+	wxDir dir(wxPathOnly(localization_dir()));
 	wxString filename;
 	const wxLanguageInfo * langinfo;
 	wxString name = wxLocale::GetLanguageName(wxLANGUAGE_DEFAULT);
@@ -319,6 +324,7 @@ void add_debug_menu(wxMenuBar *menu, int event_language_change)
 		wxArrayLong identifiers;
 		get_installed_languages(names, identifiers);
 		if (select_language(names, identifiers)){
+			save_language();
 			show_info(g_wxTabPanel, "Application will be restarted", "Attention!");
 			if (event_language_change > 0) {
 				wxCommandEvent event(event_language_change);

xs/src/slic3r/GUI/GUI.hpp

@@ -77,7 +77,7 @@ void show_info(wxWindow* parent, wxString message, wxString title);
 // load language saved at application config 
 bool load_language();
 // save language at application config 
-void save_language(bool bReset);
+void save_language();
 // get list of installed languages 
 void get_installed_languages(wxArrayString & names, wxArrayLong & identifiers);
 // select language from the list of installed languages

xs/xsp/XS.xsp

@@ -54,6 +54,12 @@ set_var_dir(dir)
     CODE:
         Slic3r::set_var_dir(dir);
 
+void
+set_local_dir(dir)
+    char  *dir;
+    CODE:
+        Slic3r::set_local_dir(dir);
+
 char*
 var_dir()
     CODE: