Merged the C++ port of the GUI Tabs / OptionGroup / Option classes

by @YuSanka, thanks @lordofhyphens for the initial port of the OptionGroup / Option.
2018-02-15 18:13:37 +01:00 · 2018-02-15 18:13:37 +01:00 · f1840a52db
commit f1840a52db
parent b695089bc4 e0933786e3
41 changed files with 11765 additions and 699 deletions
--- a/lib/Slic3r.pm
+++ b/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;

--- a/lib/Slic3r/GUI.pm
+++ b/lib/Slic3r/GUI.pm
@ -68,6 +68,10 @@ our $medium_font = Wx::SystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 $medium_font->SetPointSize(12);
 our $grey = Wx::Colour->new(200,200,200);

+# Events to be sent from a C++ menu implementation:
+# 1) To inform about a change of the application language.
+our $LANGUAGE_CHANGE_EVENT    = Wx::NewEventType;
+
 sub OnInit {
    my ($self) = @_;
    
@ -81,6 +85,7 @@ sub OnInit {
    # Mac: "~/Library/Application Support/Slic3r"
    Slic3r::set_data_dir($datadir || Wx::StandardPaths::Get->GetUserDataDir);
    Slic3r::GUI::set_wxapp($self);
+    Slic3r::GUI::load_language();
    
    $self->{notifier} = Slic3r::GUI::Notifier->new;
    $self->{app_config} = Slic3r::GUI::AppConfig->new;
@ -115,10 +120,12 @@ sub OnInit {
        # If set, the "Controller" tab for the control of the printer over serial line and the serial port settings are hidden.
        no_controller   => $self->{app_config}->get('no_controller'),
        no_plater       => $no_plater,
+        lang_ch_event   => $LANGUAGE_CHANGE_EVENT,
    );
    $self->SetTopWindow($frame);

-    EVT_IDLE($frame, sub {
+    #EVT_IDLE($frame, sub {
+    EVT_IDLE($self->{mainframe}, sub {
        while (my $cb = shift @cb) {
            $cb->();
        }
@ -134,9 +141,41 @@ sub OnInit {
        });
    }

+    # The following event is emited by the C++ menu implementation of application language change.
+    EVT_COMMAND($self, -1, $LANGUAGE_CHANGE_EVENT, sub{
+        $self->recreate_GUI;
+    });
+    
    return 1;
 }

+sub recreate_GUI{
+    my ($self) = @_;
+    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.
+        no_controller   => $self->{app_config}->get('no_controller'),
+        no_plater       => $no_plater,
+        lang_ch_event   => $LANGUAGE_CHANGE_EVENT,
+    );
+
+    if($topwindow)
+    {
+        $self->SetTopWindow($frame);
+        $topwindow->Destroy;
+    }
+
+    my $run_wizard = 1 if $self->{preset_bundle}->has_defauls_only;
+    if ($run_wizard) {
+        # On OSX the UI was not initialized correctly if the wizard was called
+        # before the UI was up and running.
+        $self->CallAfter(sub {
+            # Run the config wizard, don't offer the "reset user profile" checkbox.
+            $self->{mainframe}->config_wizard(1);
+        });
+    }
+}
+
 sub about {
    my ($self) = @_;
    my $about = Slic3r::GUI::AboutDialog->new(undef);
--- a/lib/Slic3r/GUI/MainFrame.pm
+++ b/lib/Slic3r/GUI/MainFrame.pm
@ -11,13 +11,23 @@ use List::Util qw(min first);
 use Slic3r::Geometry qw(X Y);
 use Wx qw(:frame :bitmap :id :misc :notebook :panel :sizer :menu :dialog :filedialog
    :font :icon wxTheApp);
-use Wx::Event qw(EVT_CLOSE EVT_MENU EVT_NOTEBOOK_PAGE_CHANGED);
+use Wx::Event qw(EVT_CLOSE EVT_COMMAND EVT_MENU EVT_NOTEBOOK_PAGE_CHANGED);
 use base 'Wx::Frame';

 our $qs_last_input_file;
 our $qs_last_output_file;
 our $last_config;

+# Events to be sent from a C++ Tab implementation:
+# 1) To inform about a change of a configuration value.
+our $VALUE_CHANGE_EVENT    = Wx::NewEventType;
+# 2) To inform about a preset selection change or a "modified" status change.
+our $PRESETS_CHANGED_EVENT = Wx::NewEventType;
+# 3) To inform about a click on Browse button
+our $BUTTON_BROWSE_EVENT   = Wx::NewEventType;
+# 4) To inform about a click on Test button
+our $BUTTON_TEST_EVENT     = Wx::NewEventType;
+
 sub new {
    my ($class, %params) = @_;
    
@ -37,6 +47,7 @@ sub new {
    $self->{no_controller} = $params{no_controller};
    $self->{no_plater} = $params{no_plater};
    $self->{loaded} = 0;
+    $self->{lang_ch_event} = $params{lang_ch_event};
    
    # initialize tabpanel and menubar
    $self->_init_tabpanel;
@ -106,33 +117,41 @@ sub _init_tabpanel {
            $panel->AddPage($self->{controller} = Slic3r::GUI::Controller->new($panel), "Controller");
        }
    }
-    $self->{options_tabs} = {};
    
-    for my $tab_name (qw(print filament printer)) {
-        my $tab;
-        $tab = $self->{options_tabs}{$tab_name} = ("Slic3r::GUI::Tab::" . ucfirst $tab_name)->new(
-            $panel, 
-            no_controller => $self->{no_controller});
-        # Callback to be executed after any of the configuration fields (Perl class Slic3r::GUI::OptionsGroup::Field) change their value.
-        $tab->on_value_change(sub {
-            my ($opt_key, $value) = @_;
-            my $config = $tab->{presets}->get_current_preset->config;
-            if ($self->{plater}) {
-                $self->{plater}->on_config_change($config); # propagate config change events to the plater
-                $self->{plater}->on_extruders_change($value) if $opt_key eq 'extruders_count';
+    #TODO this is an example of a Slic3r XS interface call to add a new preset editor page to the main view.
+    # The following event is emited by the C++ Tab implementation on config value change.
+    EVT_COMMAND($self, -1, $VALUE_CHANGE_EVENT, sub {
+        my ($self, $event) = @_;
+        my $str = $event->GetString;
+        my ($opt_key, $name) = ($str =~ /(.*) (.*)/);
+        #print "VALUE_CHANGE_EVENT: ", $opt_key, "\n";
+        my $tab = Slic3r::GUI::get_preset_tab($name);
+        my $config = $tab->get_config;
+        if ($self->{plater}) {
+            $self->{plater}->on_config_change($config); # propagate config change events to the plater
+            if ($opt_key eq 'extruders_count'){
+                my $value = $event->GetInt();
+                $self->{plater}->on_extruders_change($value);
            }
-            # don't save while loading for the first time
-            $self->config->save($Slic3r::GUI::autosave) if $Slic3r::GUI::autosave && $self->{loaded};
-        });
-        # Install a callback for the tab to update the platter and print controller presets, when
-        # a preset changes at Slic3r::GUI::Tab.
-        $tab->on_presets_changed(sub {
-            if ($self->{plater}) {
-                # Update preset combo boxes (Print settings, Filament, Printer) from their respective tabs.
-                $self->{plater}->update_presets($tab_name, @_);
+        }
+        # don't save while loading for the first time
+        $self->config->save($Slic3r::GUI::autosave) if $Slic3r::GUI::autosave && $self->{loaded};        
+    });
+    # The following event is emited by the C++ Tab implementation on preset selection,
+    # or when the preset's "modified" status changes.
+    EVT_COMMAND($self, -1, $PRESETS_CHANGED_EVENT, sub {
+        my ($self, $event) = @_;
+        my $tab_name = $event->GetString;
+
+        my $tab = Slic3r::GUI::get_preset_tab($tab_name);
+        if ($self->{plater}) {
+            # Update preset combo boxes (Print settings, Filament, Printer) from their respective tabs.
+            my $presets = $tab->get_presets;
+            if (defined $presets){
+                my $reload_dependent_tabs = $tab->get_dependent_tabs;
+                $self->{plater}->update_presets($tab_name, $reload_dependent_tabs, $presets);
                if ($tab_name eq 'printer') {
                    # Printer selected at the Printer tab, update "compatible" marks at the print and filament selectors.
-                    my ($presets, $reload_dependent_tabs) = @_;
                    for my $tab_name_other (qw(print filament)) {
                        # If the printer tells us that the print or filament preset has been switched or invalidated,
                        # refresh the print or filament tab page. Otherwise just refresh the combo box.
@ -141,23 +160,76 @@ sub _init_tabpanel {
                        $self->{options_tabs}{$tab_name_other}->$update_action;
                    }
                    # Update the controller printers.
-                    $self->{controller}->update_presets(@_) if $self->{controller};
+                    $self->{controller}->update_presets($presets) if $self->{controller};
                }
-                $self->{plater}->on_config_change($tab->{presets}->get_current_preset->config);
+                $self->{plater}->on_config_change($tab->get_config);
            }
-        });
-        # Load the currently selected preset into the GUI, update the preset selection box.
-        $tab->load_current_preset;
-        $panel->AddPage($tab, $tab->title);
-    }
+        }
+    });
+    # The following event is emited by the C++ Tab implementation ,
+    # when the Browse button was clicked
+    EVT_COMMAND($self, -1, $BUTTON_BROWSE_EVENT, sub {
+        my ($self, $event) = @_;
+        my $msg = $event->GetString;
+        print "BUTTON_BROWSE_EVENT: ", $msg, "\n";

-#TODO this is an example of a Slic3r XS interface call to add a new preset editor page to the main view.
-#    Slic3r::GUI::create_preset_tab("print");
+        # look for devices
+        my $entries;
+        {
+            my $res = Net::Bonjour->new('http');
+            $res->discover;
+            $entries = [ $res->entries ];
+        }
+        if (@{$entries}) {
+            my $dlg = Slic3r::GUI::BonjourBrowser->new($self, $entries);
+            my $tab = Slic3r::GUI::get_preset_tab("printer");
+            $tab->load_key_value('octoprint_host', $dlg->GetValue . ":" . $dlg->GetPort)
+                if $dlg->ShowModal == wxID_OK;
+        } else {
+            Wx::MessageDialog->new($self, 'No Bonjour device found', 'Device Browser', wxOK | wxICON_INFORMATION)->ShowModal;
+        }
+    });
+    # The following event is emited by the C++ Tab implementation ,
+    # when the Test button was clicked
+    EVT_COMMAND($self, -1, $BUTTON_TEST_EVENT, sub {
+        my ($self, $event) = @_;
+        my $msg = $event->GetString;
+        print "BUTTON_TEST_EVENT: ", $msg, "\n";
+
+        my $ua = LWP::UserAgent->new;
+        $ua->timeout(10);
+
+        my $config = Slic3r::GUI::get_preset_tab("printer")->get_config;
+        my $res = $ua->get(
+            "http://" . $config->octoprint_host . "/api/version",
+            'X-Api-Key' => $config->octoprint_apikey,
+        );
+        if ($res->is_success) {
+            Slic3r::GUI::show_info($self, "Connection to OctoPrint works correctly.", "Success!");
+        } else {
+            Slic3r::GUI::show_error($self,
+                "I wasn't able to connect to OctoPrint (" . $res->status_line . "). "
+                . "Check hostname and OctoPrint version (at least 1.1.0 is required).");
+        }
+    });
+    # A variable to inform C++ Tab implementation about disabling of Browse button
+    $self->{is_disabled_button_browse} = (!eval "use Net::Bonjour; 1") ? 1 : 0 ;
+    # A variable to inform C++ Tab implementation about user_agent
+    $self->{is_user_agent} = (eval "use LWP::UserAgent; 1") ? 1 : 0 ;    
+    Slic3r::GUI::create_preset_tabs(wxTheApp->{preset_bundle}, wxTheApp->{app_config}, 
+                                    $self->{no_controller}, $self->{is_disabled_button_browse},
+                                    $self->{is_user_agent},
+                                    $VALUE_CHANGE_EVENT, $PRESETS_CHANGED_EVENT,
+                                    $BUTTON_BROWSE_EVENT, $BUTTON_TEST_EVENT);
+    $self->{options_tabs} = {};
+    for my $tab_name (qw(print filament printer)) {
+        $self->{options_tabs}{$tab_name} = Slic3r::GUI::get_preset_tab("$tab_name");
+    }
    
    if ($self->{plater}) {
        $self->{plater}->on_select_preset(sub {
            my ($group, $name) = @_;
-	        $self->{options_tabs}{$group}->select_preset($name);
+            $self->{options_tabs}{$group}->select_preset($name);
        });
        # load initial config
        my $full_config = wxTheApp->{preset_bundle}->full_config;
@ -344,9 +416,11 @@ sub _init_menubar {
        $menubar->Append($self->{object_menu}, "&Object") if $self->{object_menu};
        $menubar->Append($windowMenu, "&Window");
        $menubar->Append($self->{viewMenu}, "&View") if $self->{viewMenu};
+        # Add an optional debug menu 
+        # (Select application language from the list of installed languages)
+        # In production code, the add_debug_menu() call should do nothing.
+        Slic3r::GUI::add_debug_menu($menubar, $self->{lang_ch_event});
        $menubar->Append($helpMenu, "&Help");
-        # Add an optional debug menu. In production code, the add_debug_menu() call should do nothing.
-        Slic3r::GUI::add_debug_menu($menubar);
        $self->SetMenuBar($menubar);
    }
 }
@ -664,7 +738,7 @@ sub check_unsaved_changes {
    
    my @dirty = ();
    foreach my $tab (values %{$self->{options_tabs}}) {
-        push @dirty, $tab->title if $tab->{presets}->current_is_dirty;
+        push @dirty, $tab->title if $tab->current_preset_is_dirty;
    }
    
    if (@dirty) {
--- a/lib/Slic3r/GUI/OptionsGroup.pm
+++ b/lib/Slic3r/GUI/OptionsGroup.pm
@ -158,7 +158,9 @@ sub _build_field {
    
    my $opt_id = $opt->opt_id;
    my $on_change = sub {
+        #! This function will be called from Field.
        my ($opt_id, $value) = @_;
+        #! Call OptionGroup._on_change(...)
        $self->_on_change($opt_id, $value)
            unless $self->_disabled;
    };
@ -213,6 +215,8 @@ sub _build_field {
    }
    return undef if !$field;
    
+    #! setting up a function that will be triggered when the field changes
+    #! think of it as $field->on_change = ($on_change)
    $field->on_change($on_change);
    $field->on_kill_focus($on_kill_focus);
    $self->_fields->{$opt_id} = $field;
--- a/lib/Slic3r/Print.pm
+++ b/lib/Slic3r/Print.pm
@ -93,6 +93,8 @@ sub export_gcode {
        $self->status_cb->(95, "Running post-processing scripts");
        $self->config->setenv;
        for my $script (@{$self->config->post_process}) {
+            # Ignore empty post processing script lines.
+            next if $script =~ /^\s*$/;
            Slic3r::debugf "  '%s' '%s'\n", $script, $output_file;
            # -x doesn't return true on Windows except for .exe files
            if (($^O eq 'MSWin32') ? !(-e $script) : !(-x $script)) {
--- a/resources/localization/cs_CZ/Slic3rPE.mo
+++ b/resources/localization/cs_CZ/Slic3rPE.mo
--- a/resources/localization/cs_CZ/Slic3rPE_cs.po
+++ b/resources/localization/cs_CZ/Slic3rPE_cs.po
--- a/resources/localization/en_US/Slic3rPE.mo
+++ b/resources/localization/en_US/Slic3rPE.mo
--- a/resources/localization/en_US/Slic3rPE_en.po
+++ b/resources/localization/en_US/Slic3rPE_en.po
--- a/resources/localization/uk/Slic3rPE.mo
+++ b/resources/localization/uk/Slic3rPE.mo
--- a/resources/localization/uk/Slic3rPE_uk.po
+++ b/resources/localization/uk/Slic3rPE_uk.po
@ -0,0 +1,538 @@
+# This file is distributed under the same license as the Slic3rPE package.
+# Oleksandra Iushchenko <yusanka@gmail.com>, 2018.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: \n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2018-02-07 20:20+0100\n"
+"PO-Revision-Date: 2018-02-08 01:41+0100\n"
+"Last-Translator: Oleksandra Iushchenko <yusanka@gmail.com>\n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Generator: Poedit 2.0.6\n"
+"Plural-Forms: nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n"
+"%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);\n"
+"Language: uk\n"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:81
+msgid "Default"
+msgstr "За замовчуванням"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:109
+msgid "Shape"
+msgstr "Вигляд (Форма)"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:116
+msgid "Rectangular"
+msgstr "Прямокутний"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:132
+msgid "Circular"
+msgstr "Круговий"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:141
+msgid "Custom"
+msgstr "Користувацький"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:145
+msgid "Load shape from STL..."
+msgstr "Завантажте форму з STL ..."
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:190
+msgid "Settings"
+msgstr "Налаштування"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:368
+msgid "Choose a file to import bed shape from (STL/OBJ/AMF/PRUSA):"
+msgstr "Виберіть файл, щоб імпортувати форму подложки з (STL/OBJ/AMF/PRUSA):"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:385
+msgid "Error! "
+msgstr "Помилка! "
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:394
+msgid "The selected file contains no geometry."
+msgstr "Обратний файл не містить геометрії."
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:398
+msgid ""
+"The selected file contains several disjoint areas. This is not supported."
+msgstr "Обраний файл містить декілька непересічних областей. Не підтримується."
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.hpp:45
+msgid "Bed Shape"
+msgstr "Форма полотна"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\GUI.cpp:318
+msgid "Error"
+msgstr "Помилка"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\GUI.cpp:323
+msgid "Notice"
+msgstr "Зауваження"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:51
+msgid "Save current "
+msgstr "Зберегти поточний "
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:52
+msgid "Delete this preset"
+msgstr "Видалити це налаштування"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:324
+msgid "Layers and perimeters"
+msgstr "Шари та периметри"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:325
+msgid "Layer height"
+msgstr "Висота шару"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:329
+msgid "Vertical shells"
+msgstr "Вертикальні оболонки"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:340
+msgid "Horizontal shells"
+msgstr "Горизонтальні оболонки"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:341
+msgid "Solid layers"
+msgstr "Тверді шари"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:346
+msgid "Quality (slower slicing)"
+msgstr "Якість (повільне нарізання)"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:353
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:367
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:460
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:463
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:839
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1122
+msgid "Advanced"
+msgstr "Розширений"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:357
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:358
+msgid "Infill"
+msgstr "Заповнення"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:363
+msgid "Reducing printing time"
+msgstr "Зниження часу друку"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:375
+msgid "Skirt and brim"
+msgstr "Плінтус та край"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:376
+msgid "Skirt"
+msgstr "Плінтус"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:382
+msgid "Brim"
+msgstr "Край"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:385
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:386
+msgid "Support material"
+msgstr "Опорний матеріал"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:391
+msgid "Raft"
+msgstr "Пліт"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:395
+msgid "Options for support material and raft"
+msgstr "Варіанти для опорного матеріалу та плоту"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:409
+msgid "Speed"
+msgstr "Швидкість"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:410
+msgid "Speed for print moves"
+msgstr "Швидкість друкарських рухів"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:422
+msgid "Speed for non-print moves"
+msgstr "Швидкість недрукарських рухів"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:425
+msgid "Modifiers"
+msgstr "Модифікатори"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:428
+msgid "Acceleration control (advanced)"
+msgstr "Контроль прискорення (розширений)"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:435
+msgid "Autospeed (advanced)"
+msgstr "Автоматична швидкість (розширена)"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:441
+msgid "Multiple Extruders"
+msgstr "Кілька екструдерів"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:442
+msgid "Extruders"
+msgstr "Екструдери"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:449
+msgid "Ooze prevention"
+msgstr "Профілактика ?Ooze?"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:453
+msgid "Wipe tower"
+msgstr "Вежа очищення"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:464
+msgid "Extrusion width"
+msgstr "Ширина екструзії"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:474
+msgid "Overlap"
+msgstr "Перекриття"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:477
+msgid "Flow"
+msgstr "Потік"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:480
+msgid "Other"
+msgstr "Інше"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:487
+msgid "Output options"
+msgstr "Параметри виводу"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:488
+msgid "Sequential printing"
+msgstr "Послідовне друкування"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:499
+msgid "Output file"
+msgstr "Вихідний файл"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:505
+msgid "Post-processing scripts"
+msgstr "Скрипти пост-обробки"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:511
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:512
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:867
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:868
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1165
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1166
+msgid "Notes"
+msgstr "Примітки"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:518
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:875
+msgid "Dependencies"
+msgstr "Залежності"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:519
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:876
+msgid "Profile dependencies"
+msgstr "Залежності профілю"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:794
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:795
+msgid "Filament"
+msgstr "Філаметн"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:802
+msgid "Temperature"
+msgstr "Температура"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:803
+msgid "Extruder"
+msgstr "Екструдер"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:808
+msgid "Bed"
+msgstr "Полотно"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:813
+msgid "Cooling"
+msgstr "Охолодження"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:814
+msgid "Enable"
+msgstr "Увімкнути"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:825
+msgid "Fan settings"
+msgstr "Налаштування вентилятора"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:834
+msgid "Cooling thresholds"
+msgstr "Пороги охолодження"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:840
+msgid "Filament properties"
+msgstr "Властивості філаменту"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:844
+msgid "Print speed override"
+msgstr "Перевизначення швидкості друку"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:854
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1128
+msgid "Custom G-code"
+msgstr "Користувацький G-код"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:855
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1129
+msgid "Start G-code"
+msgstr "Початок G-коду"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:861
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1135
+msgid "End G-code"
+msgstr "Закінчення G-коду"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:945
+msgid "General"
+msgstr "Загальне"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:946
+msgid "Size and coordinates"
+msgstr "Розмір і координати"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:948
+msgid "Bed shape"
+msgstr "Форма полотна"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:950
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1649
+msgid "Set"
+msgstr "Встановити"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:971
+msgid "Capabilities"
+msgstr "Можливості"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:998
+msgid "USB/Serial connection"
+msgstr "USB/послідовне з'єднання"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1004
+msgid "Rescan serial ports"
+msgstr "Сканувати ще раз послідовні порти"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1013
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1081
+msgid "Test"
+msgstr "Перевірити"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1026
+msgid "Connection to printer works correctly."
+msgstr "Підключення до принтера працює коректно."
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1026
+msgid "Success!"
+msgstr "Успіх!"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1029
+msgid "Connection failed."
+msgstr "Підключення не вдалося."
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1041
+msgid "OctoPrint upload"
+msgstr "Завантаження OctoPrint"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1044
+msgid "Browse"
+msgstr "Переглянути"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1119
+msgid "Firmware"
+msgstr "Прошивка"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1141
+msgid "Before layer change G-code"
+msgstr "G-код перед зміною шару "
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1147
+msgid "After layer change G-code"
+msgstr "G-код після зміни шару"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1153
+msgid "Tool change G-code"
+msgstr "G-код зміни інструменту "
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1159
+msgid "Between objects G-code (for sequential printing)"
+msgstr "G-код між об'єктами (для послідовного друку)"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1195
+msgid "Extruder "
+msgstr "Екструдер "
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1198
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:120
+msgid "Size"
+msgstr "Розмір"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1201
+msgid "Layer height limits"
+msgstr "Межі висоти шару"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1206
+msgid "Position (for multi-extruder printers)"
+msgstr "Позиція (для мульти-екструдерних принтерів)"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1209
+msgid "Retraction"
+msgstr "Утягування/відкликання"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1212
+msgid "Only lift Z"
+msgstr "Межі підняття Z"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1225
+msgid ""
+"Retraction when tool is disabled (advanced settings for multi-extruder "
+"setups)"
+msgstr ""
+"Утягування/відкликання при відключенні інструмента (додаткові налаштування "
+"для налагодження мульти-екструдерів)"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1229
+msgid "Preview"
+msgstr "Попередній перегляд"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1320
+msgid ""
+"The Wipe option is not available when using the Firmware Retraction mode.\n"
+"\n"
+"Shall I disable it in order to enable Firmware Retraction?"
+msgstr ""
+"Параметр «Очистити» недоступний при використанні режиму програмного "
+"утягування/відкликання.\n"
+"\n"
+"Відключити його для увімкнення програмного утягування/відкликання?"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1322
+msgid "Firmware Retraction"
+msgstr "Програмне утягування/відкликання"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1565
+msgid "The supplied name is empty. It can't be saved."
+msgstr "Надане ім'я порожнє. Не вдається зберегти."
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1576
+msgid "Something is wrong. It can't be saved."
+msgstr "Щось не так. Не вдається зберегти."
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1593
+msgid "remove"
+msgstr "перемістити"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1593
+msgid "delete"
+msgstr "видалити"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1594
+msgid "Are you sure you want to "
+msgstr "Ви впевнені, що хочете "
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1594
+msgid " the selected preset?"
+msgstr "вибране налаштування?"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1595
+msgid "Remove"
+msgstr "Перемістити"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1595
+msgid "Delete"
+msgstr "Видалити"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1596
+msgid " Preset"
+msgstr " Налаштування"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1648
+msgid "All"
+msgstr "Всі"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1679
+msgid "Select the printers this profile is compatible with."
+msgstr "Оберіть принтери, сумісні з цим профілем."
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1680
+msgid "Compatible printers"
+msgstr "Сумісні принтери"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1763
+msgid "Save "
+msgstr "Зберегти "
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1763
+msgid " as:"
+msgstr " як:"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1797
+msgid ""
+"The supplied name is not valid; the following characters are not allowed:"
+msgstr "Надане ім'я недійсне; такі символи не допускаються:"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.cpp:1800
+msgid "The supplied name is not available."
+msgstr "Надане ім'я недійсне."
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.hpp:178
+msgid "Print Settings"
+msgstr "Налаштування друку"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.hpp:198
+msgid "Filament Settings"
+msgstr "Налаштування філаменту"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.hpp:224
+msgid "Printer Settings"
+msgstr "Налаштування принтеру"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Tab.hpp:244
+msgid "Save preset"
+msgstr "Зберегти налаштування"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\Field.cpp:35
+msgid "default"
+msgstr "за замовчуванням"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:121
+msgid "Size in X and Y of the rectangular plate."
+msgstr "Розмір прямокутної подложки за X та Y."
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:127
+msgid "Origin"
+msgstr "Початок координат"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:128
+msgid ""
+"Distance of the 0,0 G-code coordinate from the front left corner of the "
+"rectangle."
+msgstr "Відстань координат 0,0 G-коду від нижнього лівого кута прямокутника."
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:135
+msgid "mm"
+msgstr "мм"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:136
+msgid "Diameter"
+msgstr "Діаметр"
+
+#: c:\src\Slic3r\xs\src\slic3r\GUI\BedShapeDialog.cpp:137
+msgid ""
+"Diameter of the print bed. It is assumed that origin (0,0) is located in the "
+"center."
+msgstr ""
+"Діаметр подложки. Передбачається, що початок координат (0,0) знаходиться в "
+"центрі."
--- a/xs/CMakeLists.txt
+++ b/xs/CMakeLists.txt
@ -181,6 +181,18 @@ add_library(libslic3r_gui STATIC
    ${LIBDIR}/slic3r/GUI/PresetHints.hpp
    ${LIBDIR}/slic3r/GUI/GUI.cpp
    ${LIBDIR}/slic3r/GUI/GUI.hpp
+    ${LIBDIR}/slic3r/GUI/Tab.cpp
+    ${LIBDIR}/slic3r/GUI/Tab.hpp
+    ${LIBDIR}/slic3r/GUI/TabIface.cpp
+    ${LIBDIR}/slic3r/GUI/TabIface.hpp
+    ${LIBDIR}/slic3r/GUI/Field.cpp
+    ${LIBDIR}/slic3r/GUI/Field.hpp
+    ${LIBDIR}/slic3r/GUI/OptionsGroup.cpp
+    ${LIBDIR}/slic3r/GUI/OptionsGroup.hpp
+    ${LIBDIR}/slic3r/GUI/BedShapeDialog.cpp
+    ${LIBDIR}/slic3r/GUI/BedShapeDialog.hpp
+    ${LIBDIR}/slic3r/GUI/2DBed.cpp
+    ${LIBDIR}/slic3r/GUI/2DBed.hpp
    ${LIBDIR}/slic3r/GUI/wxExtensions.cpp
    ${LIBDIR}/slic3r/GUI/wxExtensions.hpp
 )
@ -307,6 +319,7 @@ set(XS_XSP_FILES
    ${XSP_DIR}/GUI_AppConfig.xsp
    ${XSP_DIR}/GUI_3DScene.xsp
    ${XSP_DIR}/GUI_Preset.xsp
+    ${XSP_DIR}/GUI_Tab.xsp
    ${XSP_DIR}/Layer.xsp
    ${XSP_DIR}/Line.xsp
    ${XSP_DIR}/Model.xsp
--- a/xs/lib/Slic3r/XS.pm
+++ b/xs/lib/Slic3r/XS.pm
@ -283,6 +283,7 @@ for my $class (qw(
        Slic3r::GUI::_3DScene::GLVolume
        Slic3r::GUI::Preset
        Slic3r::GUI::PresetCollection
+        Slic3r::GUI::Tab2
        Slic3r::Layer
        Slic3r::Layer::Region
        Slic3r::Layer::Support
--- a/xs/src/libslic3r/Polygon.hpp
+++ b/xs/src/libslic3r/Polygon.hpp
@ -24,6 +24,12 @@ public:
    explicit Polygon(const Points &points): MultiPoint(points) {}
    Polygon(const Polygon &other) : MultiPoint(other.points) {}
    Polygon(Polygon &&other) : MultiPoint(std::move(other.points)) {}
+	static Polygon new_scale(std::vector<Pointf> points) { 
+		Points int_points;
+		for (auto pt : points)
+			int_points.push_back(Point::new_scale(pt.x, pt.y));
+		return Polygon(int_points);
+	}
    Polygon& operator=(const Polygon &other) { points = other.points; return *this; }
    Polygon& operator=(Polygon &&other) { points = std::move(other.points); return *this; }

--- a/xs/src/libslic3r/Polyline.hpp
+++ b/xs/src/libslic3r/Polyline.hpp
@ -21,6 +21,14 @@ public:
    Polyline(Polyline &&other) : MultiPoint(std::move(other.points)) {}
    Polyline& operator=(const Polyline &other) { points = other.points; return *this; }
    Polyline& operator=(Polyline &&other) { points = std::move(other.points); return *this; }
+	static Polyline new_scale(std::vector<Pointf> points) {
+		Polyline pl;
+		Points int_points;
+		for (auto pt : points)
+			int_points.push_back(Point::new_scale(pt.x, pt.y));
+		pl.append(int_points);
+		return pl;
+    }
    
    void append(const Point &point) { this->points.push_back(point); }
    void append(const Points &src) { this->append(src.begin(), src.end()); }
--- a/xs/src/libslic3r/PrintConfig.cpp
+++ b/xs/src/libslic3r/PrintConfig.cpp
--- a/xs/src/libslic3r/Utils.hpp
+++ b/xs/src/libslic3r/Utils.hpp
@ -20,6 +20,11 @@ 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.
+const std::string& localization_dir();
+
 // Set a path with preset files.
 void set_data_dir(const std::string &path);
 // Return a full path to the GUI resource files.
--- a/xs/src/libslic3r/utils.cpp
+++ b/xs/src/libslic3r/utils.cpp
@ -103,6 +103,18 @@ const std::string& resources_dir()
    return g_resources_dir;
 }

+static std::string g_local_dir;
+
+void set_local_dir(const std::string &dir)
+{
+    g_local_dir = dir;
+}
+
+const std::string& localization_dir()
+{
+	return g_local_dir;
+}
+
 static std::string g_data_dir;

 void set_data_dir(const std::string &dir)
--- a/xs/src/perlglue.cpp
+++ b/xs/src/perlglue.cpp
@ -63,6 +63,7 @@ REGISTER_CLASS(Preset, "GUI::Preset");
 REGISTER_CLASS(PresetCollection, "GUI::PresetCollection");
 REGISTER_CLASS(PresetBundle, "GUI::PresetBundle");
 REGISTER_CLASS(PresetHints, "GUI::PresetHints");
+REGISTER_CLASS(TabIface, "GUI::Tab2");

 SV* ConfigBase__as_hash(ConfigBase* THIS)
 {
--- a/xs/src/slic3r/GUI/2DBed.cpp
+++ b/xs/src/slic3r/GUI/2DBed.cpp
@ -0,0 +1,189 @@
+#include "2DBed.hpp";
+
+#include <wx/dcbuffer.h>
+#include "BoundingBox.hpp"
+#include "Geometry.hpp"
+#include "ClipperUtils.hpp"
+
+namespace Slic3r {
+namespace GUI {
+
+void Bed_2D::repaint()
+{
+	wxAutoBufferedPaintDC dc(this);
+	auto cw = GetSize().GetWidth();
+	auto ch = GetSize().GetHeight();
+	// when canvas is not rendered yet, size is 0, 0
+	if (cw == 0) return ; 
+
+	if (m_user_drawn_background) {
+		// On all systems the AutoBufferedPaintDC() achieves double buffering.
+		// On MacOS the background is erased, on Windows the background is not erased
+		// and on Linux / GTK the background is erased to gray color.
+		// Fill DC with the background on Windows & Linux / GTK.
+		auto color = wxSystemSettings::GetColour(wxSYS_COLOUR_3DLIGHT); //GetSystemColour
+		dc.SetPen(*new wxPen(color, 1, wxPENSTYLE_SOLID));
+		dc.SetBrush(*new wxBrush(color, wxBRUSHSTYLE_SOLID));
+		auto rect = GetUpdateRegion().GetBox();
+		dc.DrawRectangle(rect.GetLeft(), rect.GetTop(), rect.GetWidth(), rect.GetHeight());
+	}
+
+	// turn cw and ch from sizes to max coordinates
+	cw--;
+	ch--;
+
+	auto cbb = BoundingBoxf(Pointf(0, 0),Pointf(cw, ch));
+	// leave space for origin point
+	cbb.min.translate(4, 0);
+	cbb.max.translate(-4, -4);
+
+	// leave space for origin label
+	cbb.max.translate(0, -13);
+
+	// read new size
+	cw = cbb.size().x;
+	ch = cbb.size().y;
+
+	auto ccenter = cbb.center();
+
+	// get bounding box of bed shape in G - code coordinates
+	auto bed_shape = m_bed_shape;
+	auto bed_polygon = Polygon::new_scale(m_bed_shape);
+	auto bb = BoundingBoxf(m_bed_shape);
+	bb.merge(Pointf(0, 0));  // origin needs to be in the visible area
+	auto bw = bb.size().x;
+	auto bh = bb.size().y;
+	auto bcenter = bb.center();
+
+	// calculate the scaling factor for fitting bed shape in canvas area
+	auto sfactor = std::min(cw/bw, ch/bh);
+	auto shift = Pointf(
+		ccenter.x - bcenter.x * sfactor,
+		ccenter.y - bcenter.y * sfactor
+		);
+	m_scale_factor = sfactor;
+	m_shift = Pointf(shift.x + cbb.min.x,
+					shift.y - (cbb.max.y - GetSize().GetHeight()));
+
+	// draw bed fill
+	dc.SetBrush(*new wxBrush(*new wxColour(255, 255, 255), wxSOLID));
+	wxPointList pt_list;
+	for (auto pt: m_bed_shape)
+	{
+		Point pt_pix = to_pixels(pt);
+		pt_list.push_back(new wxPoint(pt_pix.x, pt_pix.y));
+	}
+	dc.DrawPolygon(&pt_list, 0, 0);
+
+	// draw grid
+	auto step = 10;  // 1cm grid
+	Polylines polylines;
+	for (auto x = bb.min.x - fmod(bb.min.x, step) + step; x < bb.max.x; x += step) {
+		Polyline pl = Polyline::new_scale({ Pointf(x, bb.min.y), Pointf(x, bb.max.y) });
+		polylines.push_back(pl);
+	}
+	for (auto y = bb.min.y - fmod(bb.min.y, step) + step; y < bb.max.y; y += step) {
+		polylines.push_back(Polyline::new_scale({ Pointf(bb.min.x, y), Pointf(bb.max.x, y) }));
+	}
+	polylines = intersection_pl(polylines, bed_polygon);
+
+	dc.SetPen(*new wxPen(*new wxColour(230, 230, 230), 1, wxSOLID));
+	for (auto pl : polylines)
+	{
+		for (size_t i = 0; i < pl.points.size()-1; i++){
+			Point pt1 = to_pixels(Pointf::new_unscale(pl.points[i]));
+			Point pt2 = to_pixels(Pointf::new_unscale(pl.points[i+1]));
+			dc.DrawLine(pt1.x, pt1.y, pt2.x, pt2.y);
+		}
+	}
+
+	// draw bed contour
+	dc.SetPen(*new wxPen(*new wxColour(0, 0, 0), 1, wxSOLID));
+	dc.SetBrush(*new wxBrush(*new wxColour(0, 0, 0), wxTRANSPARENT));
+	dc.DrawPolygon(&pt_list, 0, 0);
+
+	auto origin_px = to_pixels(Pointf(0, 0));
+
+	// draw axes
+	auto axes_len = 50;
+	auto arrow_len = 6;
+	auto arrow_angle = Geometry::deg2rad(45.0);
+	dc.SetPen(*new wxPen(*new wxColour(255, 0, 0), 2, wxSOLID));  // red
+	auto x_end = Pointf(origin_px.x + axes_len, origin_px.y);
+	dc.DrawLine(wxPoint(origin_px.x, origin_px.y), wxPoint(x_end.x, x_end.y));
+	for (auto angle : { -arrow_angle, arrow_angle }){
+		auto end = x_end;
+		end.translate(-arrow_len, 0);
+		end.rotate(angle, x_end);
+		dc.DrawLine(wxPoint(x_end.x, x_end.y), wxPoint(end.x, end.y));
+	}
+
+	dc.SetPen(*new wxPen(*new wxColour(0, 255, 0), 2, wxSOLID));  // green
+	auto y_end = Pointf(origin_px.x, origin_px.y - axes_len);
+	dc.DrawLine(wxPoint(origin_px.x, origin_px.y), wxPoint(y_end.x, y_end.y));
+	for (auto angle : { -arrow_angle, arrow_angle }) {
+		auto end = y_end;
+		end.translate(0, +arrow_len);
+		end.rotate(angle, y_end);
+		dc.DrawLine(wxPoint(y_end.x, y_end.y), wxPoint(end.x, end.y));
+	}
+
+	// draw origin
+	dc.SetPen(*new wxPen(*new wxColour(0, 0, 0), 1, wxSOLID));
+	dc.SetBrush(*new wxBrush(*new wxColour(0, 0, 0), wxSOLID));
+	dc.DrawCircle(origin_px.x, origin_px.y, 3);
+
+	dc.SetTextForeground(*new wxColour(0, 0, 0));
+	dc.SetFont(*new wxFont(10, wxDEFAULT, wxNORMAL, wxNORMAL));
+	dc.DrawText("(0,0)", origin_px.x + 1, origin_px.y + 2);
+
+	// draw current position
+	if (m_pos!= Pointf(0, 0)) {
+		auto pos_px = to_pixels(m_pos);
+		dc.SetPen(*new wxPen(*new wxColour(200, 0, 0), 2, wxSOLID));
+		dc.SetBrush(*new wxBrush(*new wxColour(200, 0, 0), wxTRANSPARENT));
+		dc.DrawCircle(pos_px.x, pos_px.y, 5);
+
+		dc.DrawLine(pos_px.x - 15, pos_px.y, pos_px.x + 15, pos_px.y);
+		dc.DrawLine(pos_px.x, pos_px.y - 15, pos_px.x, pos_px.y + 15);
+	}
+
+	m_painted = true;
+}
+
+// convert G - code coordinates into pixels
+Point Bed_2D::to_pixels(Pointf point){
+	auto p = Pointf(point);
+	p.scale(m_scale_factor);
+	p.translate(m_shift);
+	return Point(p.x, GetSize().GetHeight() - p.y); 
+}
+
+void Bed_2D::mouse_event(wxMouseEvent event){
+	if (!m_interactive) return;
+	if (!m_painted) return;
+
+	auto pos = event.GetPosition();
+	auto point = to_units(Point(pos.x, pos.y));  
+	if (event.LeftDown() || event.Dragging()) {
+		if (m_on_move)
+			m_on_move(point) ;
+		Refresh();
+	}
+}
+
+// convert pixels into G - code coordinates
+Pointf Bed_2D::to_units(Point point){
+	auto p = Pointf(point.x, GetSize().GetHeight() - point.y);
+	p.translate(m_shift.negative());
+	p.scale(1 / m_scale_factor);
+	return p;
+}
+
+void Bed_2D::set_pos(Pointf pos){
+	m_pos = pos;
+	Refresh();
+}
+
+} // GUI
+} // Slic3r
--- a/xs/src/slic3r/GUI/2DBed.hpp
+++ b/xs/src/slic3r/GUI/2DBed.hpp
@ -0,0 +1,45 @@
+#include <wx/wx.h>
+#include "Config.hpp"
+
+namespace Slic3r {
+namespace GUI {
+
+class Bed_2D : public wxPanel
+{
+	bool		m_user_drawn_background = false;
+
+	bool		m_painted = false;
+	bool		m_interactive = false;
+	double		m_scale_factor;
+	Pointf		m_shift;
+	Pointf		m_pos;
+	std::function<void(Pointf)>	m_on_move = nullptr;
+
+	Point		to_pixels(Pointf point);
+	Pointf		to_units(Point point);
+	void		repaint();
+	void		mouse_event(wxMouseEvent event);
+	void		set_pos(Pointf pos);
+
+public:
+	Bed_2D(wxWindow* parent) 
+	{
+		Create(parent, wxID_ANY, wxDefaultPosition, wxSize(250, -1), wxTAB_TRAVERSAL);
+//		m_user_drawn_background = $^O ne 'darwin';
+		m_user_drawn_background = true;
+		Bind(wxEVT_PAINT, ([this](wxPaintEvent e) { repaint(); }));
+//		EVT_ERASE_BACKGROUND($self, sub{}) if $self->{user_drawn_background};
+//		Bind(EVT_MOUSE_EVENTS, ([this](wxMouseEvent  event){/*mouse_event()*/; }));
+		Bind(wxEVT_LEFT_DOWN, ([this](wxMouseEvent  event){ mouse_event(event); }));
+		Bind(wxEVT_MOTION, ([this](wxMouseEvent  event){ mouse_event(event); }));
+		Bind(wxEVT_SIZE, ([this](wxSizeEvent e) { Refresh(); }));
+	}
+	~Bed_2D(){}
+
+	std::vector<Pointf>		m_bed_shape;
+		
+};
+
+
+} // GUI
+} // Slic3r
--- a/xs/src/slic3r/GUI/BedShapeDialog.cpp
+++ b/xs/src/slic3r/GUI/BedShapeDialog.cpp
@ -0,0 +1,341 @@
+#include "BedShapeDialog.hpp"
+
+#include <wx/sizer.h>
+#include <wx/statbox.h>
+#include <wx/wx.h> 
+#include "Polygon.hpp"
+#include "BoundingBox.hpp"
+#include <wx/numformatter.h>
+#include "Model.hpp"
+#include "boost/nowide/iostream.hpp"
+
+namespace Slic3r {
+namespace GUI {
+
+void BedShapeDialog::build_dialog(ConfigOptionPoints* default_pt)
+{
+	m_panel = new BedShapePanel(this);
+	m_panel->build_panel(default_pt);
+
+	auto main_sizer = new wxBoxSizer(wxVERTICAL);
+	main_sizer->Add(m_panel, 1, wxEXPAND);
+	main_sizer->Add(CreateButtonSizer(wxOK | wxCANCEL), 0, wxALIGN_CENTER_HORIZONTAL | wxBOTTOM, 10);
+
+	SetSizer(main_sizer);
+	SetMinSize(GetSize());
+	main_sizer->SetSizeHints(this);
+
+	// needed to actually free memory
+	this->Bind(wxEVT_CLOSE_WINDOW, ([this](wxCloseEvent e){
+		EndModal(wxID_OK);
+		Destroy();
+	}));
+}
+
+void BedShapePanel::build_panel(ConfigOptionPoints* default_pt)
+{
+//	on_change(nullptr);
+
+	auto box = new wxStaticBox(this, wxID_ANY, _L("Shape"));
+	auto sbsizer = new wxStaticBoxSizer(box, wxVERTICAL);
+
+	// shape options
+	m_shape_options_book = new wxChoicebook(this, wxID_ANY, wxDefaultPosition, wxSize(300, -1), wxCHB_TOP);
+	sbsizer->Add(m_shape_options_book);
+
+	auto optgroup = init_shape_options_page(_L("Rectangular"));
+		ConfigOptionDef def;
+		def.type = coPoints;
+		def.default_value = new ConfigOptionPoints{ Pointf(200, 200) };
+		def.label = _LU8("Size");
+		def.tooltip = _LU8("Size in X and Y of the rectangular plate.");
+		Option option(def, "rect_size");
+		optgroup->append_single_option_line(option);
+
+		def.type = coPoints;
+		def.default_value = new ConfigOptionPoints{ Pointf(0, 0) };
+		def.label = _LU8("Origin");
+		def.tooltip = _LU8("Distance of the 0,0 G-code coordinate from the front left corner of the rectangle.");
+		option = Option(def, "rect_origin");
+		optgroup->append_single_option_line(option);
+
+		optgroup = init_shape_options_page(_L("Circular"));
+		def.type = coFloat;
+		def.default_value = new ConfigOptionFloat(200);
+		def.sidetext = _LU8("mm");
+		def.label = _LU8("Diameter");
+		def.tooltip = _LU8("Diameter of the print bed. It is assumed that origin (0,0) is located in the center.");
+		option = Option(def, "diameter");
+		optgroup->append_single_option_line(option);
+
+		optgroup = init_shape_options_page(_L("Custom"));
+		Line line{ "", "" };
+		line.full_width = 1;
+		line.widget = [this](wxWindow* parent) {
+			auto btn = new wxButton(parent, wxID_ANY, _L("Load shape from STL..."), wxDefaultPosition, wxDefaultSize);
+			
+			auto sizer = new wxBoxSizer(wxHORIZONTAL);
+			sizer->Add(btn);
+
+			btn->Bind(wxEVT_BUTTON, ([this](wxCommandEvent e)
+			{
+				load_stl();
+			}));
+
+			return sizer;
+		};
+		optgroup->append_line(line);
+
+	Bind(wxEVT_CHOICEBOOK_PAGE_CHANGED, ([this](wxCommandEvent e)
+	{
+		update_shape();
+	}));
+
+	// right pane with preview canvas
+	m_canvas = new Bed_2D(this);
+	m_canvas->m_bed_shape = default_pt->values;
+
+	// main sizer
+	auto top_sizer = new wxBoxSizer(wxHORIZONTAL);
+	top_sizer->Add(sbsizer, 0, wxEXPAND | wxLeft | wxTOP | wxBOTTOM, 10);
+	if (m_canvas)
+		top_sizer->Add(m_canvas, 1, wxEXPAND | wxALL, 10) ;
+
+	SetSizerAndFit(top_sizer);
+
+	set_shape(default_pt);
+	update_preview();
+}
+
+#define SHAPE_RECTANGULAR	0
+#define SHAPE_CIRCULAR		1
+#define SHAPE_CUSTOM		2
+
+// Called from the constructor.
+// Create a panel for a rectangular / circular / custom bed shape.
+ConfigOptionsGroupShp BedShapePanel::init_shape_options_page(wxString title){
+
+	auto panel = new wxPanel(m_shape_options_book);
+	ConfigOptionsGroupShp optgroup;
+	optgroup = std::make_shared<ConfigOptionsGroup>(panel, _L("Settings"));
+
+	optgroup->label_width = 100;
+	optgroup->m_on_change = [this](t_config_option_key opt_key, boost::any value){
+		update_shape();
+	};
+		
+	m_optgroups.push_back(optgroup);
+	panel->SetSizerAndFit(optgroup->sizer);
+	m_shape_options_book->AddPage(panel, title);
+
+	return optgroup;
+}
+
+// Called from the constructor.
+// Set the initial bed shape from a list of points.
+// Deduce the bed shape type(rect, circle, custom)
+// This routine shall be smart enough if the user messes up
+// with the list of points in the ini file directly.
+void BedShapePanel::set_shape(ConfigOptionPoints* points)
+{
+	auto polygon = Polygon::new_scale(points->values);
+
+	// is this a rectangle ?
+	if (points->size() == 4) {
+		auto lines = polygon.lines();
+		if (lines[0].parallel_to(lines[2]) && lines[1].parallel_to(lines[3])) {
+			// okay, it's a rectangle
+			// find origin
+			// the || 0 hack prevents "-0" which might confuse the user
+			int x_min, x_max, y_min, y_max;
+			x_max = x_min = points->values[0].x;
+			y_max = y_min = points->values[0].y;
+			for (auto pt : points->values){
+				if (x_min > pt.x) x_min = pt.x;
+				if (x_max < pt.x) x_max = pt.x;
+				if (y_min > pt.y) y_min = pt.y;
+				if (y_max < pt.y) y_max = pt.y;
+			}
+			if (x_min < 0) x_min = 0;
+			if (x_max < 0) x_max = 0;
+			if (y_min < 0) y_min = 0;
+			if (y_max < 0) y_max = 0;
+			auto origin = new ConfigOptionPoints{ Pointf(-x_min, -y_min) };
+
+			m_shape_options_book->SetSelection(SHAPE_RECTANGULAR);
+			auto optgroup = m_optgroups[SHAPE_RECTANGULAR];
+			optgroup->set_value("rect_size", new ConfigOptionPoints{ Pointf(x_max - x_min, y_max - y_min) });//[x_max - x_min, y_max - y_min]);
+			optgroup->set_value("rect_origin", origin);
+			update_shape();
+			return;
+		}
+	}
+
+	// is this a circle ?
+	{
+		// Analyze the array of points.Do they reside on a circle ?
+		auto center = polygon.bounding_box().center();
+		std::vector<double> vertex_distances;
+		double avg_dist = 0;
+		for (auto pt: polygon.points)
+		{
+			double distance = center.distance_to(pt);
+			vertex_distances.push_back(distance);
+			avg_dist += distance;
+		}
+			
+		bool defined_value = true;
+		for (auto el: vertex_distances)
+		{
+			if (abs(el - avg_dist) > 10 * SCALED_EPSILON)
+				defined_value = false;
+			break;
+		}
+		if (defined_value) {
+			// all vertices are equidistant to center
+			m_shape_options_book->SetSelection(SHAPE_CIRCULAR);
+			auto optgroup = m_optgroups[SHAPE_CIRCULAR];
+			boost::any ret = wxNumberFormatter::ToString(unscale(avg_dist * 2), 0);
+ 			optgroup->set_value("diameter", ret);
+			update_shape();
+			return;
+		}
+	}
+
+	if (points->size() < 3) {
+		// Invalid polygon.Revert to default bed dimensions.
+		m_shape_options_book->SetSelection(SHAPE_RECTANGULAR);
+		auto optgroup = m_optgroups[SHAPE_RECTANGULAR];
+		optgroup->set_value("rect_size", new ConfigOptionPoints{ Pointf(200, 200) });
+		optgroup->set_value("rect_origin", new ConfigOptionPoints{ Pointf(0, 0) });
+		update_shape();
+		return;
+	}
+
+	// This is a custom bed shape, use the polygon provided.
+	m_shape_options_book->SetSelection(SHAPE_CUSTOM);
+	// Copy the polygon to the canvas, make a copy of the array.
+	m_canvas->m_bed_shape = points->values;
+	update_shape();
+}
+
+void BedShapePanel::update_preview()
+{
+	if (m_canvas) m_canvas->Refresh();
+	Refresh();
+}
+
+// Update the bed shape from the dialog fields.
+void BedShapePanel::update_shape()
+{
+	auto page_idx = m_shape_options_book->GetSelection();
+	if (page_idx == SHAPE_RECTANGULAR) {
+		Pointf rect_size, rect_origin;
+		try{
+			rect_size = boost::any_cast<Pointf>(m_optgroups[SHAPE_RECTANGULAR]->get_value("rect_size")); }
+		catch (const std::exception &e){
+			return;}
+		try{
+			rect_origin = boost::any_cast<Pointf>(m_optgroups[SHAPE_RECTANGULAR]->get_value("rect_origin"));
+		}
+		catch (const std::exception &e){
+			return;}
+		
+		auto x = rect_size.x;
+		auto y = rect_size.y;
+		// empty strings or '-' or other things
+		if (x == 0 || y == 0)	return;
+		double x0 = 0.0;
+		double y0 = 0.0;
+		double x1 = x;
+		double y1 = y;
+
+		auto dx = rect_origin.x;
+		auto dy = rect_origin.y;
+
+		x0 -= dx;
+		x1 -= dx;
+		y0 -= dy;
+		y1 -= dy;
+		m_canvas->m_bed_shape = {	Pointf(x0, y0),
+									Pointf(x1, y0),
+									Pointf(x1, y1),
+									Pointf(x0, y1)};
+	} 
+	else if(page_idx == SHAPE_CIRCULAR) {
+		double diameter;
+		try{
+			diameter = boost::any_cast<double>(m_optgroups[SHAPE_CIRCULAR]->get_value("diameter"));
+		}
+		catch (const std::exception &e){
+			return;
+		} 
+ 		if (diameter == 0.0) return ;
+		auto r = diameter / 2;
+		auto twopi = 2 * PI;
+		auto edges = 60;
+		std::vector<Pointf> points;
+		for (size_t i = 1; i <= 60; ++i){
+			auto angle = i * twopi / edges;
+			points.push_back(Pointf(r*cos(angle), r*sin(angle)));
+		}
+		m_canvas->m_bed_shape = points;
+	}
+
+//	$self->{on_change}->();
+	update_preview();
+}
+
+// Loads an stl file, projects it to the XY plane and calculates a polygon.
+void BedShapePanel::load_stl()
+{
+	t_file_wild_card vec_FILE_WILDCARDS = get_file_wild_card();
+	std::vector<std::string> file_types = { "known", "stl", "obj", "amf", "prusa"};
+	wxString MODEL_WILDCARD;
+	for (auto file_type: file_types)
+		MODEL_WILDCARD += vec_FILE_WILDCARDS.at(file_type) + "|";
+
+	auto dialog = new wxFileDialog(this, _L("Choose a file to import bed shape from (STL/OBJ/AMF/PRUSA):"), "", "",
+		MODEL_WILDCARD, wxFD_OPEN | wxFD_FILE_MUST_EXIST);
+	if (dialog->ShowModal() != wxID_OK) {
+		dialog->Destroy();
+		return;
+	}
+	wxArrayString input_file;
+	dialog->GetPaths(input_file);
+	dialog->Destroy();
+
+	std::string file_name = input_file[0].ToStdString();
+
+	Model model;
+	try {
+		model = Model::read_from_file(file_name);
+	}
+	catch (std::exception &e) {
+		auto msg = _L("Error! ") + file_name + " : " + e.what() + ".";
+		show_error(this, msg);
+		exit(1);
+	}
+
+	auto mesh = model.mesh();
+	auto expolygons = mesh.horizontal_projection();
+
+	if (expolygons.size() == 0) {
+		show_error(this, _L("The selected file contains no geometry."));
+		return;
+	}
+	if (expolygons.size() > 1) {
+		show_error(this, _L("The selected file contains several disjoint areas. This is not supported."));
+		return;
+	}
+
+	auto polygon = expolygons[0].contour;
+	std::vector<Pointf> points;
+	for (auto pt : polygon.points)
+		points.push_back(Pointf::new_unscale(pt));
+	m_canvas->m_bed_shape = points;
+	update_preview();
+}
+
+} // GUI
+} // Slic3r
--- a/xs/src/slic3r/GUI/BedShapeDialog.hpp
+++ b/xs/src/slic3r/GUI/BedShapeDialog.hpp
@ -0,0 +1,51 @@
+// The bed shape dialog.
+// The dialog opens from Print Settins tab->Bed Shape : Set...
+
+#include "OptionsGroup.hpp"
+#include "2DBed.hpp"
+
+
+#include <wx/dialog.h>
+#include <wx/choicebk.h>
+
+namespace Slic3r {
+namespace GUI {
+
+using ConfigOptionsGroupShp = std::shared_ptr<ConfigOptionsGroup>;
+class BedShapePanel : public wxPanel
+{
+	wxChoicebook*	m_shape_options_book;
+	Bed_2D*			m_canvas;
+
+	std::vector <ConfigOptionsGroupShp>	m_optgroups;
+
+public:
+	BedShapePanel(wxWindow* parent) : wxPanel(parent, wxID_ANY){}
+	~BedShapePanel(){}
+
+	void		build_panel(ConfigOptionPoints* default_pt);
+	
+	ConfigOptionsGroupShp	init_shape_options_page(wxString title);
+	void		set_shape(ConfigOptionPoints* points);
+	void		update_preview();
+	void		update_shape();
+	void		load_stl();
+	
+	// Returns the resulting bed shape polygon. This value will be stored to the ini file.
+	std::vector<Pointf>	GetValue() { return m_canvas->m_bed_shape; }
+};
+
+class BedShapeDialog : public wxDialog
+{
+	BedShapePanel*	m_panel;
+public:
+	BedShapeDialog(wxWindow* parent) : wxDialog(parent, wxID_ANY, _L("Bed Shape"),
+		wxDefaultPosition, wxSize(350, 700), wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER){}
+	~BedShapeDialog(){  }
+
+	void		build_dialog(ConfigOptionPoints* default_pt);
+	std::vector<Pointf>	GetValue() { return m_panel->GetValue(); }
+};
+
+} // GUI
+} // Slic3r
--- a/xs/src/slic3r/GUI/ConfigExceptions.hpp
+++ b/xs/src/slic3r/GUI/ConfigExceptions.hpp
@ -0,0 +1,15 @@
+#include <exception> 
+namespace Slic3r {
+
+class ConfigError : public std::runtime_error { 
+using std::runtime_error::runtime_error;
+};
+
+namespace GUI {
+
+class ConfigGUITypeError : public ConfigError { 
+using ConfigError::ConfigError;
+};
+}
+
+}
--- a/xs/src/slic3r/GUI/Field.cpp
+++ b/xs/src/slic3r/GUI/Field.cpp
@ -0,0 +1,570 @@
+#include "GUI.hpp"//"slic3r_gui.hpp"
+#include "Field.hpp"
+
+//#include <wx/event.h>
+#include <regex>
+#include <wx/numformatter.h>
+#include <wx/tooltip.h>
+#include "PrintConfig.hpp"
+#include <boost/algorithm/string/predicate.hpp>
+
+namespace Slic3r { namespace GUI {
+
+	void Field::on_kill_focus(wxEvent& event) {
+        // Without this, there will be nasty focus bugs on Windows.
+        // Also, docs for wxEvent::Skip() say "In general, it is recommended to skip all 
+        // non-command events to allow the default handling to take place."
+		event.Skip();
+		std::cerr << "calling Field::on_kill_focus from " << m_opt_id<< "\n";
+        // call the registered function if it is available
+        if (m_on_kill_focus!=nullptr) 
+            m_on_kill_focus();
+    }
+    void Field::on_change_field()
+	{
+//        std::cerr << "calling Field::_on_change \n";
+        if (m_on_change != nullptr  && !m_disable_change_event)
+            m_on_change(m_opt_id, get_value());
+    }
+
+	wxString Field::get_tooltip_text(const wxString& default_string)
+	{
+		wxString tooltip_text("");
+		wxString tooltip = wxString::FromUTF8(m_opt.tooltip.c_str());
+		if (tooltip.length() > 0)
+			tooltip_text = tooltip + "(" + _L("default") + ": " +
+							(boost::iends_with(m_opt_id, "_gcode") ? "\n" : "") + 
+							default_string + ")";
+
+		return tooltip_text;
+	}
+
+	bool Field::is_matched(std::string string, std::string pattern)
+	{
+		std::regex regex_pattern(pattern, std::regex_constants::icase); // use ::icase to make the matching case insensitive like /i in perl
+		return std::regex_match(string, regex_pattern);
+	}
+
+	boost::any Field::get_value_by_opt_type(wxString str, ConfigOptionType type)
+	{
+		boost::any ret_val;
+		switch (m_opt.type){
+		case coInt:
+			ret_val = wxAtoi(str);
+			break;
+		case coPercent:
+		case coPercents:
+		case coFloats:
+		case coFloat:{
+			if (m_opt.type == coPercent) str.RemoveLast();
+			double val;
+			str.ToCDouble(&val);
+			ret_val = val;
+			break; }
+		case coString:
+		case coStrings:
+			ret_val = str.ToStdString();
+			break;
+		case coFloatOrPercent:{
+			if (str.Last() == '%')
+				str.RemoveLast();
+			double val;
+			str.ToCDouble(&val);
+			ret_val = val;
+			break;
+		}
+		default:
+			break;
+		}
+
+		return ret_val;
+	}
+
+	void TextCtrl::BUILD() {
+        auto size = wxSize(wxDefaultSize);
+        if (m_opt.height >= 0) size.SetHeight(m_opt.height);
+        if (m_opt.width >= 0) size.SetWidth(m_opt.width);
+
+		wxString text_value = wxString(""); 
+
+		switch (m_opt.type) {
+		case coFloatOrPercent:
+		{
+			if (static_cast<const ConfigOptionFloatOrPercent*>(m_opt.default_value)->percent)
+			{
+				text_value = wxString::Format(_T("%i"), int(m_opt.default_value->getFloat()));
+				text_value += "%";
+			}
+			else
+				text_value = wxNumberFormatter::ToString(m_opt.default_value->getFloat(), 2);
+			break;
+		}
+		case coPercent:
+		{
+			text_value = wxString::Format(_T("%i"), int(m_opt.default_value->getFloat()));
+			text_value += "%";
+			break;
+		}	
+		case coPercents:
+		{
+			const ConfigOptionPercents *vec = static_cast<const ConfigOptionPercents*>(m_opt.default_value);
+			if (vec == nullptr || vec->empty()) break;
+			if (vec->size() > 1)
+				break;
+			double val = vec->get_at(0);
+			text_value = val - int(val) == 0 ? wxString::Format(_T("%i"), int(val)) : wxNumberFormatter::ToString(val, 2, wxNumberFormatter::Style_None);
+			break;
+		}			
+		case coFloat:
+		{
+			double val = m_opt.default_value->getFloat();
+			text_value = (val - int(val)) == 0 ? wxString::Format(_T("%i"), int(val)) : wxNumberFormatter::ToString(val, 2, wxNumberFormatter::Style_None);
+			break;
+		}			
+		case coFloats:
+		{
+			const ConfigOptionFloats *vec = static_cast<const ConfigOptionFloats*>(m_opt.default_value);
+			if (vec == nullptr || vec->empty()) break;
+			if (vec->size() > 1)
+				break;
+			double val = vec->get_at(0);
+			text_value = val - int(val) == 0 ? wxString::Format(_T("%i"), int(val)) : wxNumberFormatter::ToString(val, 2, wxNumberFormatter::Style_None);
+			break;
+		}
+		case coString:			
+			text_value = static_cast<const ConfigOptionString*>(m_opt.default_value)->value;
+			break;
+		case coStrings:
+		{
+			const ConfigOptionStrings *vec = static_cast<const ConfigOptionStrings*>(m_opt.default_value);
+			if (vec == nullptr || vec->empty()) break;
+			if (vec->size() > 1)
+				break;
+			text_value = vec->values.at(0);
+			break;
+		}
+		default:
+			break; 
+		}
+
+		auto temp = new wxTextCtrl(m_parent, wxID_ANY, text_value, wxDefaultPosition, size, (m_opt.multiline ? wxTE_MULTILINE : 0));
+
+		temp->SetToolTip(get_tooltip_text(text_value));
+        
+		temp->Bind(wxEVT_LEFT_DOWN, ([temp](wxEvent& event)
+		{
+			//! to allow the default handling
+			event.Skip();
+			//! eliminating the g-code pop up text description
+			temp->GetToolTip()->Enable(false);
+		}), temp->GetId());
+
+		temp->Bind(wxEVT_KILL_FOCUS, ([this, temp](wxEvent& e)
+		{
+			on_kill_focus(e);
+			temp->GetToolTip()->Enable(true);
+		}), temp->GetId());
+
+		temp->Bind(wxEVT_TEXT, ([this](wxCommandEvent) { on_change_field(); }), temp->GetId());
+
+        // recast as a wxWindow to fit the calling convention
+        window = dynamic_cast<wxWindow*>(temp);
+    }	
+
+	boost::any TextCtrl::get_value()
+	{
+		wxString ret_str = static_cast<wxTextCtrl*>(window)->GetValue();
+		boost::any ret_val = get_value_by_opt_type(ret_str, m_opt.type);
+
+		return ret_val;
+	}
+
+	void TextCtrl::enable() { dynamic_cast<wxTextCtrl*>(window)->Enable(); dynamic_cast<wxTextCtrl*>(window)->SetEditable(true); }
+    void TextCtrl::disable() { dynamic_cast<wxTextCtrl*>(window)->Disable(); dynamic_cast<wxTextCtrl*>(window)->SetEditable(false); }
+
+void CheckBox::BUILD() {
+	auto size = wxSize(wxDefaultSize);
+	if (m_opt.height >= 0) size.SetHeight(m_opt.height);
+	if (m_opt.width >= 0) size.SetWidth(m_opt.width);
+
+	bool check_value =	m_opt.type == coBool ? 
+						m_opt.default_value->getBool() : m_opt.type == coBools ? 
+						static_cast<ConfigOptionBools*>(m_opt.default_value)->values.at(0) : 
+    					false;
+
+	auto temp = new wxCheckBox(m_parent, wxID_ANY, wxString(""), wxDefaultPosition, size); 
+	temp->SetValue(check_value);
+	if (m_opt.readonly) temp->Disable();
+
+	temp->Bind(wxEVT_CHECKBOX, ([this](wxCommandEvent e) { on_change_field(); }), temp->GetId());
+
+	temp->SetToolTip(get_tooltip_text(check_value ? "true" : "false")); 
+
+	// recast as a wxWindow to fit the calling convention
+	window = dynamic_cast<wxWindow*>(temp);
+}
+
+int undef_spin_val = -9999;		//! Probably, It's not necessary
+
+void SpinCtrl::BUILD() {
+	auto size = wxSize(wxDefaultSize);
+	if (m_opt.height >= 0) size.SetHeight(m_opt.height);
+	if (m_opt.width >= 0) size.SetWidth(m_opt.width);
+
+	wxString	text_value = wxString("");
+	int			default_value = 0;
+
+	switch (m_opt.type) {
+	case coInt:
+		default_value = m_opt.default_value->getInt();
+		text_value = wxString::Format(_T("%i"), default_value);
+		break;
+	case coInts:
+	{
+		const ConfigOptionInts *vec = static_cast<const ConfigOptionInts*>(m_opt.default_value);
+		if (vec == nullptr || vec->empty()) break;
+		for (size_t id = 0; id < vec->size(); ++id)
+		{
+			default_value = vec->get_at(id);
+			text_value += wxString::Format(_T("%i"), default_value);
+		}
+		break;
+	}
+	default:
+		break;
+	}
+
+	auto temp = new wxSpinCtrl(m_parent, wxID_ANY, text_value, wxDefaultPosition, size,
+		0, m_opt.min >0 ? m_opt.min : 0, m_opt.max < 2147483647 ? m_opt.max : 2147483647, default_value);
+
+	temp->Bind(wxEVT_SPINCTRL, ([this](wxCommandEvent e) { tmp_value = undef_spin_val; on_change_field(); }), temp->GetId());
+	temp->Bind(wxEVT_KILL_FOCUS, ([this](wxEvent& e) { tmp_value = undef_spin_val; on_kill_focus(e); }), temp->GetId());
+	temp->Bind(wxEVT_TEXT, ([this](wxCommandEvent e)
+	{
+// 		# On OSX / Cocoa, wxSpinCtrl::GetValue() doesn't return the new value
+// 		# when it was changed from the text control, so the on_change callback
+// 		# gets the old one, and on_kill_focus resets the control to the old value.
+// 		# As a workaround, we get the new value from $event->GetString and store
+// 		# here temporarily so that we can return it from $self->get_value
+		std::string value = e.GetString().utf8_str().data();
+		if (is_matched(value, "^\\d+$"))
+			tmp_value = std::stoi(value);
+		on_change_field();
+// 		# We don't reset tmp_value here because _on_change might put callbacks
+// 		# in the CallAfter queue, and we want the tmp value to be available from
+// 		# them as well.
+	}), temp->GetId());
+	
+	temp->SetToolTip(get_tooltip_text(text_value));
+
+	// recast as a wxWindow to fit the calling convention
+	window = dynamic_cast<wxWindow*>(temp);
+}
+
+void Choice::BUILD() {
+	auto size = wxSize(wxDefaultSize);
+	if (m_opt.height >= 0) size.SetHeight(m_opt.height);
+	if (m_opt.width >= 0) size.SetWidth(m_opt.width);
+
+	wxComboBox* temp;	
+	if (!m_opt.gui_type.empty() && m_opt.gui_type.compare("select_open") != 0)
+		temp = new wxComboBox(m_parent, wxID_ANY, wxString(""), wxDefaultPosition, size);
+	else
+		temp = new wxComboBox(m_parent, wxID_ANY, wxString(""), wxDefaultPosition, size, 0, NULL, wxCB_READONLY);
+
+	// recast as a wxWindow to fit the calling convention
+	window = dynamic_cast<wxWindow*>(temp);
+
+	if (m_opt.enum_labels.empty() && m_opt.enum_values.empty()){
+	}
+	else{
+		for (auto el : m_opt.enum_labels.empty() ? m_opt.enum_values : m_opt.enum_labels)
+			temp->Append(wxString(el));
+		set_selection();
+	}
+ 	temp->Bind(wxEVT_TEXT, ([this](wxCommandEvent e) { on_change_field(); }), temp->GetId());
+ 	temp->Bind(wxEVT_COMBOBOX, ([this](wxCommandEvent e) { on_change_field(); }), temp->GetId());
+
+	temp->SetToolTip(get_tooltip_text(temp->GetValue()));
+}
+
+void Choice::set_selection()
+{
+	wxString text_value = wxString("");
+	switch (m_opt.type){
+	case coFloat:
+	case coPercent:	{
+		double val = m_opt.default_value->getFloat();
+		text_value = val - int(val) == 0 ? wxString::Format(_T("%i"), int(val)) : wxNumberFormatter::ToString(val, 1);
+		size_t idx = 0;
+		for (auto el : m_opt.enum_values)
+		{
+			if (el.compare(text_value) == 0)
+				break;
+			++idx;
+		}
+		if (m_opt.type == coPercent) text_value += "%";
+		idx == m_opt.enum_values.size() ?
+			dynamic_cast<wxComboBox*>(window)->SetValue(text_value) :
+			dynamic_cast<wxComboBox*>(window)->SetSelection(idx);
+		break;
+	}
+	case coEnum:{
+		int id_value = static_cast<const ConfigOptionEnum<SeamPosition>*>(m_opt.default_value)->value; //!!
+		dynamic_cast<wxComboBox*>(window)->SetSelection(id_value);
+		break;
+	}
+	case coInt:{
+		int val = m_opt.default_value->getInt(); //!!
+		text_value = wxString::Format(_T("%i"), int(val));
+		size_t idx = 0;
+		for (auto el : m_opt.enum_values)
+		{
+			if (el.compare(text_value) == 0)
+				break;
+			++idx;
+		}
+		idx == m_opt.enum_values.size() ?
+			dynamic_cast<wxComboBox*>(window)->SetValue(text_value) :
+			dynamic_cast<wxComboBox*>(window)->SetSelection(idx);
+		break;
+	}
+	case coStrings:{
+		text_value = static_cast<const ConfigOptionStrings*>(m_opt.default_value)->values.at(0);
+
+		size_t idx = 0;
+		for (auto el : m_opt.enum_values)
+		{
+			if (el.compare(text_value) == 0)
+				break;
+			++idx;
+		}
+		idx == m_opt.enum_values.size() ?
+			dynamic_cast<wxComboBox*>(window)->SetValue(text_value) :
+			dynamic_cast<wxComboBox*>(window)->SetSelection(idx);
+		break;
+	}
+	}
+}
+
+void Choice::set_value(const std::string value)  //! Redundant?
+{
+	m_disable_change_event = true;
+
+	size_t idx=0;
+	for (auto el : m_opt.enum_values)
+	{
+		if (el.compare(value) == 0)
+			break;
+		++idx;
+	}
+
+	idx == m_opt.enum_values.size() ? 
+		dynamic_cast<wxComboBox*>(window)->SetValue(value) :
+		dynamic_cast<wxComboBox*>(window)->SetSelection(idx);
+	
+	m_disable_change_event = false;
+}
+
+void Choice::set_value(boost::any value)
+{
+	m_disable_change_event = true;
+
+	switch (m_opt.type){
+	case coInt:
+	case coFloat:
+	case coPercent:
+	case coStrings:{
+		wxString text_value;
+		if (m_opt.type == coInt) 
+			text_value = wxString::Format(_T("%i"), int(boost::any_cast<int>(value)));
+		else
+			text_value = boost::any_cast<wxString>(value);
+		auto idx = 0;
+		for (auto el : m_opt.enum_values)
+		{
+			if (el.compare(text_value) == 0)
+				break;
+			++idx;
+		}
+		if (m_opt.type == coPercent) text_value += "%";
+		idx == m_opt.enum_values.size() ?
+			dynamic_cast<wxComboBox*>(window)->SetValue(text_value) :
+			dynamic_cast<wxComboBox*>(window)->SetSelection(idx);
+		break;
+	}
+	case coEnum:{
+		dynamic_cast<wxComboBox*>(window)->SetSelection(boost::any_cast<int>(value));
+		break;
+	}
+	default:
+		break;
+	}
+
+	m_disable_change_event = false;
+}
+
+//! it's needed for _update_serial_ports()
+void Choice::set_values(const std::vector<std::string> values)
+{
+	if (values.empty())
+		return;
+	m_disable_change_event = true;
+
+// 	# it looks that Clear() also clears the text field in recent wxWidgets versions,
+// 	# but we want to preserve it
+	auto ww = dynamic_cast<wxComboBox*>(window);
+	auto value = ww->GetValue();
+	ww->Clear();
+	for (auto el : values)
+		ww->Append(wxString(el));
+	ww->SetValue(value);
+
+	m_disable_change_event = false;
+}
+
+boost::any Choice::get_value()
+{
+	boost::any ret_val;
+	wxString ret_str = static_cast<wxComboBox*>(window)->GetValue();	
+
+	if (m_opt.type != coEnum)
+		ret_val = get_value_by_opt_type(ret_str, m_opt.type);
+	else
+	{
+		int ret_enum = static_cast<wxComboBox*>(window)->GetSelection(); 
+		if (m_opt_id.compare("external_fill_pattern") == 0)
+		{
+			if (!m_opt.enum_values.empty()){
+				std::string key = m_opt.enum_values[ret_enum];
+				t_config_enum_values map_names = ConfigOptionEnum<InfillPattern>::get_enum_values();
+				int value = map_names.at(key);
+
+				ret_val = static_cast<InfillPattern>(value);
+			}
+			else
+				ret_val = static_cast<InfillPattern>(0);
+		}
+		if (m_opt_id.compare("fill_pattern") == 0)
+			ret_val = static_cast<InfillPattern>(ret_enum);
+		else if (m_opt_id.compare("gcode_flavor") == 0)
+			ret_val = static_cast<GCodeFlavor>(ret_enum);
+		else if (m_opt_id.compare("support_material_pattern") == 0)
+			ret_val = static_cast<SupportMaterialPattern>(ret_enum);
+		else if (m_opt_id.compare("seam_position") == 0)
+			ret_val = static_cast<SeamPosition>(ret_enum);
+	}	
+
+	return ret_val;
+}
+
+void ColourPicker::BUILD()
+{
+	auto size = wxSize(wxDefaultSize);
+	if (m_opt.height >= 0) size.SetHeight(m_opt.height);
+	if (m_opt.width >= 0) size.SetWidth(m_opt.width);
+
+	wxString clr(static_cast<ConfigOptionStrings*>(m_opt.default_value)->values.at(0));
+	auto temp = new wxColourPickerCtrl(m_parent, wxID_ANY, clr, wxDefaultPosition, size);
+		
+	// 	// recast as a wxWindow to fit the calling convention
+	window = dynamic_cast<wxWindow*>(temp);
+
+	temp->Bind(wxEVT_COLOURPICKER_CHANGED, ([this](wxCommandEvent e) { on_change_field(); }), temp->GetId());
+
+	temp->SetToolTip(get_tooltip_text(clr));
+}
+
+boost::any ColourPicker::get_value(){
+	boost::any ret_val;
+
+	auto colour = static_cast<wxColourPickerCtrl*>(window)->GetColour();
+	auto clr_str = wxString::Format(wxT("#%02X%02X%02X"), colour.Red(), colour.Green(), colour.Blue());
+	ret_val = clr_str.ToStdString();
+
+	return ret_val;
+}
+
+void PointCtrl::BUILD()
+{
+	auto size = wxSize(wxDefaultSize);
+	if (m_opt.height >= 0) size.SetHeight(m_opt.height);
+	if (m_opt.width >= 0) size.SetWidth(m_opt.width);
+
+	auto temp = new wxBoxSizer(wxHORIZONTAL);
+	// 	$self->wxSizer($sizer);
+	// 
+	wxSize field_size(40, -1);
+
+	auto default_pt = static_cast<ConfigOptionPoints*>(m_opt.default_value)->values.at(0);
+	double val = default_pt.x;
+	wxString X = val - int(val) == 0 ? wxString::Format(_T("%i"), int(val)) : wxNumberFormatter::ToString(val, 2, wxNumberFormatter::Style_None);
+	val = default_pt.y;
+	wxString Y = val - int(val) == 0 ? wxString::Format(_T("%i"), int(val)) : wxNumberFormatter::ToString(val, 2, wxNumberFormatter::Style_None);
+
+	x_textctrl = new wxTextCtrl(m_parent, wxID_ANY, X, wxDefaultPosition, field_size);
+	y_textctrl = new wxTextCtrl(m_parent, wxID_ANY, Y, wxDefaultPosition, field_size);
+
+	temp->Add(new wxStaticText(m_parent, wxID_ANY, "x : "), 0, wxALIGN_CENTER_VERTICAL, 0);
+	temp->Add(x_textctrl);
+	temp->Add(new wxStaticText(m_parent, wxID_ANY, "   y : "), 0, wxALIGN_CENTER_VERTICAL, 0);
+	temp->Add(y_textctrl);
+
+	x_textctrl->Bind(wxEVT_TEXT, ([this](wxCommandEvent e) { on_change_field(); }), x_textctrl->GetId());
+	y_textctrl->Bind(wxEVT_TEXT, ([this](wxCommandEvent e) { on_change_field(); }), y_textctrl->GetId());
+
+	// 	// recast as a wxWindow to fit the calling convention
+	sizer = dynamic_cast<wxSizer*>(temp);
+
+	x_textctrl->SetToolTip(get_tooltip_text(X+", "+Y));
+	y_textctrl->SetToolTip(get_tooltip_text(X+", "+Y));
+}
+
+void PointCtrl::set_value(const Pointf value)
+{
+	m_disable_change_event = true;
+
+	double val = value.x;
+	x_textctrl->SetValue(val - int(val) == 0 ? wxString::Format(_T("%i"), int(val)) : wxNumberFormatter::ToString(val, 2, wxNumberFormatter::Style_None));
+	val = value.y;
+	y_textctrl->SetValue(val - int(val) == 0 ? wxString::Format(_T("%i"), int(val)) : wxNumberFormatter::ToString(val, 2, wxNumberFormatter::Style_None));
+
+	m_disable_change_event = false;
+}
+
+void PointCtrl::set_value(boost::any value)
+{
+	Pointf pt;
+	try
+	{
+		pt = boost::any_cast<ConfigOptionPoints*>(value)->values.at(0);
+	}
+	catch (const std::exception &e)
+	{
+		try{
+			pt = boost::any_cast<Pointf>(value);
+		}
+		catch (const std::exception &e)
+		{
+			std::cerr << "Error! Can't cast PointCtrl value" << m_opt_id << "\n";
+			return;
+		}		
+	}	
+	set_value(pt);
+}
+
+boost::any PointCtrl::get_value()
+{
+	Pointf ret_point;
+	double val;
+	x_textctrl->GetValue().ToDouble(&val);
+	ret_point.x = val;
+	y_textctrl->GetValue().ToDouble(&val);
+	ret_point.y = val;
+	return ret_point;
+}
+
+} // GUI
+} // Slic3r
+
+
--- a/xs/src/slic3r/GUI/Field.hpp
+++ b/xs/src/slic3r/GUI/Field.hpp
@ -0,0 +1,270 @@
+#ifndef SLIC3R_GUI_FIELD_HPP
+#define SLIC3R_GUI_FIELD_HPP
+
+#include <wx/wxprec.h>
+#ifndef WX_PRECOMP
+    #include <wx/wx.h>
+#endif
+
+#include <memory>
+#include <functional>
+#include <boost/any.hpp>
+
+#include <wx/spinctrl.h>
+#include <wx/clrpicker.h>
+
+#include "../../libslic3r/libslic3r.h"
+#include "../../libslic3r/Config.hpp"
+
+//#include "slic3r_gui.hpp"
+#include "GUI.hpp"
+
+namespace Slic3r { namespace GUI {
+
+class Field;
+using t_field = std::unique_ptr<Field>;
+using t_kill_focus = std::function<void()>;
+using t_change = std::function<void(t_config_option_key, boost::any)>;
+
+class Field {
+protected:
+    // factory function to defer and enforce creation of derived type. 
+    virtual void	PostInitialize() { BUILD(); }
+    
+    /// Finish constructing the Field's wxWidget-related properties, including setting its own sizer, etc.
+    virtual void	BUILD() = 0;
+
+    /// Call the attached on_kill_focus method. 
+	//! It's important to use wxEvent instead of wxFocusEvent,
+	//! in another case we can't unfocused control at all
+	void			on_kill_focus(wxEvent& event);
+    /// Call the attached on_change method. 
+    void			on_change_field();
+
+public:
+    /// parent wx item, opportunity to refactor (probably not necessary - data duplication)
+    wxWindow*		m_parent {nullptr};
+
+    /// Function object to store callback passed in from owning object.
+	t_kill_focus	m_on_kill_focus {nullptr};
+
+    /// Function object to store callback passed in from owning object.
+	t_change		m_on_change {nullptr};
+
+	// This is used to avoid recursive invocation of the field change/update by wxWidgets.
+    bool			m_disable_change_event {false};
+
+    /// Copy of ConfigOption for deduction purposes
+    const ConfigOptionDef			m_opt {ConfigOptionDef()};
+	const t_config_option_key		m_opt_id;//! {""};
+
+    /// Sets a value for this control.
+    /// subclasses should overload with a specific version
+    /// Postcondition: Method does not fire the on_change event.
+    virtual void		set_value(boost::any value) = 0;
+    
+    /// Gets a boost::any representing this control.
+    /// subclasses should overload with a specific version
+    virtual boost::any	get_value() = 0;
+
+    virtual void		enable() = 0;
+    virtual void		disable() = 0;
+
+    /// Fires the enable or disable function, based on the input.
+    inline void			toggle(bool en) { en ? enable() : disable(); }
+
+	virtual wxString	get_tooltip_text(const wxString& default_string);
+
+    Field(const ConfigOptionDef& opt, const t_config_option_key& id) : m_opt(opt), m_opt_id(id) {};
+    Field(wxWindow* parent, const ConfigOptionDef& opt, const t_config_option_key& id) : m_parent(parent), m_opt(opt), m_opt_id(id) {};
+
+    /// If you don't know what you are getting back, check both methods for nullptr. 
+    virtual wxSizer*	getSizer()  { return nullptr; }
+    virtual wxWindow*	getWindow() { return nullptr; }
+
+	bool		is_matched(std::string string, std::string pattern);
+	boost::any	get_value_by_opt_type(wxString str, ConfigOptionType type);
+
+    /// Factory method for generating new derived classes.
+    template<class T>
+    static t_field Create(wxWindow* parent, const ConfigOptionDef& opt, const t_config_option_key& id)  // interface for creating shared objects
+    {
+        auto p = Slic3r::make_unique<T>(parent, opt, id);
+        p->PostInitialize();
+		return std::move(p); //!p;
+    }
+};
+
+/// Convenience function, accepts a const reference to t_field and checks to see whether 
+/// or not both wx pointers are null.
+inline bool is_bad_field(const t_field& obj) { return obj->getSizer() == nullptr && obj->getWindow() == nullptr; }
+
+/// Covenience function to determine whether this field is a valid window field.
+inline bool is_window_field(const t_field& obj) { return !is_bad_field(obj) && obj->getWindow() != nullptr; }
+
+/// Covenience function to determine whether this field is a valid sizer field.
+inline bool is_sizer_field(const t_field& obj) { return !is_bad_field(obj) && obj->getSizer() != nullptr; }
+
+class TextCtrl : public Field {
+    using Field::Field;
+public:
+	TextCtrl(const ConfigOptionDef& opt, const t_config_option_key& id) : Field(opt,  id) {}
+	TextCtrl(wxWindow* parent, const ConfigOptionDef& opt, const t_config_option_key& id) : Field(parent, opt, id) {}
+
+    void BUILD();
+    wxWindow* window {nullptr};
+
+    virtual void	set_value(std::string value) {
+		m_disable_change_event = true;
+        dynamic_cast<wxTextCtrl*>(window)->SetValue(wxString(value));
+		m_disable_change_event = false;
+    }
+    virtual void	set_value(boost::any value) {
+		m_disable_change_event = true;
+		dynamic_cast<wxTextCtrl*>(window)->SetValue(boost::any_cast<wxString>(value));
+		m_disable_change_event = false;
+    }
+
+	boost::any		get_value() override;
+
+    virtual void	enable();
+    virtual void	disable();
+    virtual wxWindow* getWindow() { return window; }
+};
+
+class CheckBox : public Field {
+	using Field::Field;
+public:
+	CheckBox(const ConfigOptionDef& opt, const t_config_option_key& id) : Field(opt, id) {}
+	CheckBox(wxWindow* parent, const ConfigOptionDef& opt, const t_config_option_key& id) : Field(parent, opt, id) {}
+
+	wxWindow*		window{ nullptr };
+	void			BUILD() override;
+
+	void			set_value(const bool value) {
+		m_disable_change_event = true;
+		dynamic_cast<wxCheckBox*>(window)->SetValue(value);
+		m_disable_change_event = false;
+	}
+	void			set_value(boost::any value) {
+		m_disable_change_event = true;
+		dynamic_cast<wxCheckBox*>(window)->SetValue(boost::any_cast<bool>(value));
+		m_disable_change_event = false;
+	}
+	boost::any		get_value() override {
+		return boost::any(dynamic_cast<wxCheckBox*>(window)->GetValue());
+	}
+
+	void			enable() override { dynamic_cast<wxCheckBox*>(window)->Enable(); }
+	void			disable() override { dynamic_cast<wxCheckBox*>(window)->Disable(); }
+	wxWindow*		getWindow() override { return window; }
+};
+
+class SpinCtrl : public Field {
+	using Field::Field;
+public:
+	SpinCtrl(const ConfigOptionDef& opt, const t_config_option_key& id) : Field(opt, id), tmp_value(-9999) {}
+	SpinCtrl(wxWindow* parent, const ConfigOptionDef& opt, const t_config_option_key& id) : Field(parent, opt, id), tmp_value(-9999) {}
+
+	int				tmp_value;
+
+	wxWindow*		window{ nullptr };
+	void			BUILD() override;
+
+	void			set_value(const std::string value) {
+		m_disable_change_event = true;
+		dynamic_cast<wxSpinCtrl*>(window)->SetValue(value);
+		m_disable_change_event = false;
+	}
+	void			set_value(boost::any value) {
+		m_disable_change_event = true;
+		dynamic_cast<wxSpinCtrl*>(window)->SetValue(boost::any_cast<int>(value));
+		m_disable_change_event = false;
+	}
+	boost::any		get_value() override {
+		return boost::any(dynamic_cast<wxSpinCtrl*>(window)->GetValue());
+	}
+
+	void			enable() override { dynamic_cast<wxSpinCtrl*>(window)->Enable(); }
+	void			disable() override { dynamic_cast<wxSpinCtrl*>(window)->Disable(); }
+	wxWindow*		getWindow() override { return window; }
+};
+
+class Choice : public Field {
+	using Field::Field;
+public:
+	Choice(const ConfigOptionDef& opt, const t_config_option_key& id) : Field(opt, id) {}
+	Choice(wxWindow* parent, const ConfigOptionDef& opt, const t_config_option_key& id) : Field(parent, opt, id) {}
+
+	wxWindow*		window{ nullptr };
+	void			BUILD() override;
+
+	void			set_selection();
+	void			set_value(const std::string value);
+	void			set_value(boost::any value);
+	void			set_values(const std::vector<std::string> values);
+	boost::any		get_value() override;
+
+	void			enable() override { dynamic_cast<wxComboBox*>(window)->Enable(); };
+	void			disable() override{ dynamic_cast<wxComboBox*>(window)->Disable(); };
+	wxWindow*		getWindow() override { return window; }
+};
+
+class ColourPicker : public Field {
+	using Field::Field;
+public:
+	ColourPicker(const ConfigOptionDef& opt, const t_config_option_key& id) : Field(opt, id) {}
+	ColourPicker(wxWindow* parent, const ConfigOptionDef& opt, const t_config_option_key& id) : Field(parent, opt, id) {}
+
+	wxWindow*		window{ nullptr };
+	void			BUILD()  override;
+
+	void			set_value(const std::string value) {
+		m_disable_change_event = true;
+		dynamic_cast<wxColourPickerCtrl*>(window)->SetColour(value);
+		m_disable_change_event = false;
+	 	}
+	void			set_value(boost::any value) {
+		m_disable_change_event = true;
+		dynamic_cast<wxColourPickerCtrl*>(window)->SetColour(boost::any_cast<wxString>(value));
+		m_disable_change_event = false;
+	}
+
+	boost::any		get_value() override;
+
+	void			enable() override { dynamic_cast<wxColourPickerCtrl*>(window)->Enable(); };
+	void			disable() override{ dynamic_cast<wxColourPickerCtrl*>(window)->Disable(); };
+	wxWindow*		getWindow() override { return window; }
+};
+
+class PointCtrl : public Field {
+	using Field::Field;
+public:
+	PointCtrl(const ConfigOptionDef& opt, const t_config_option_key& id) : Field(opt, id) {}
+	PointCtrl(wxWindow* parent, const ConfigOptionDef& opt, const t_config_option_key& id) : Field(parent, opt, id) {}
+
+	wxSizer*		sizer{ nullptr };
+	wxTextCtrl*		x_textctrl;
+	wxTextCtrl*		y_textctrl;
+
+	void			BUILD()  override;
+
+	void			set_value(const Pointf value);
+	void			set_value(boost::any value);
+	boost::any		get_value() override;
+
+	void			enable() override {
+		x_textctrl->Enable();
+		y_textctrl->Enable(); };
+	void			disable() override{
+		x_textctrl->Disable();
+		y_textctrl->Disable(); };
+	wxSizer*		getSizer() override { return sizer; }
+};
+
+
+#endif
+} // GUI
+} // Slic3r
+
+
--- a/xs/src/slic3r/GUI/GUI.cpp
+++ b/xs/src/slic3r/GUI/GUI.cpp
@ -4,6 +4,7 @@

 #include <boost/algorithm/string/predicate.hpp>
 #include <boost/filesystem.hpp>
+#include <boost/lexical_cast.hpp>

 #include <boost/algorithm/string/split.hpp>
 #include <boost/algorithm/string/classification.hpp>
@ -12,21 +13,39 @@
 #import <IOKit/pwr_mgt/IOPMLib.h>
 #elif _WIN32
 #include <Windows.h>
+// Undefine min/max macros incompatible with the standard library
+// For example, std::numeric_limits<std::streamsize>::max()
+// produces some weird errors
+#ifdef min
+#undef min
+#endif
+#ifdef max
+#undef max
+#endif
 #include "boost/nowide/convert.hpp"
 #pragma comment(lib, "user32.lib")
 #endif

 #include <wx/app.h>
 #include <wx/button.h>
+#include <wx/config.h>
+#include <wx/dir.h>
+#include <wx/filename.h>
 #include <wx/frame.h>
 #include <wx/menu.h>
 #include <wx/notebook.h>
 #include <wx/panel.h>
 #include <wx/sizer.h>
 #include <wx/combo.h>
+#include <wx/window.h>

 #include "wxExtensions.hpp"

+#include "Tab.hpp"
+#include "TabIface.hpp"
+#include "AppConfig.hpp"
+#include "Utils.hpp"
+
 namespace Slic3r { namespace GUI {

 #if __APPLE__
@ -153,6 +172,10 @@ wxApp       *g_wxApp        = nullptr;
 wxFrame     *g_wxMainFrame  = nullptr;
 wxNotebook  *g_wxTabPanel   = nullptr;

+std::vector<Tab *> g_tabs_list;
+
+wxLocale*	g_wxLocale;
+
 void set_wxapp(wxApp *app)
 {
    g_wxApp = app;
@ -168,25 +191,292 @@ void set_tab_panel(wxNotebook *tab_panel)
    g_wxTabPanel = tab_panel;
 }

-void add_debug_menu(wxMenuBar *menu)
+std::vector<Tab *>& get_tabs_list()
 {
-#if 0
-    auto debug_menu = new wxMenu();
-    debug_menu->Append(wxWindow::NewControlId(1), "Some debug");
-    menu->Append(debug_menu, _T("&Debug"));
-#endif
+	return g_tabs_list;
 }

-void create_preset_tab(const char *name)
+bool checked_tab(Tab* tab)
 {
-    auto  *panel  = new wxPanel(g_wxTabPanel, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxBK_LEFT | wxTAB_TRAVERSAL);
-    // Vertical sizer to hold the choice menu and the rest of the page.
-    auto  *sizer  = new wxBoxSizer(wxVERTICAL);
-    sizer->SetSizeHints(panel);
-    panel->SetSizer(sizer);
-    auto  *button = new wxButton(panel, wxID_ANY, "Hello World", wxDefaultPosition, wxDefaultSize, 0);
-    sizer->Add(button, 0, 0, 0);
-    g_wxTabPanel->AddPage(panel, name);
+	bool ret = true;
+	if (find(g_tabs_list.begin(), g_tabs_list.end(), tab) == g_tabs_list.end())
+		ret = false;
+	return ret;
+}
+
+void delete_tab_from_list(Tab* tab)
+{
+	std::vector<Tab *>::iterator itr = find(g_tabs_list.begin(), g_tabs_list.end(), tab);
+	if (itr != g_tabs_list.end())
+		g_tabs_list.erase(itr);
+}
+
+bool select_language(wxArrayString & names,
+	wxArrayLong & identifiers)
+{
+	wxCHECK_MSG(names.Count() == identifiers.Count(), false,
+		_L("Array of language names and identifiers should have the same size."));
+	int init_selection = 0;
+	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)
+	{
+		g_wxLocale = new wxLocale;
+		g_wxLocale->Init(identifiers[index]);
+		g_wxLocale->AddCatalogLookupPathPrefix(wxPathOnly(localization_dir()));
+		g_wxLocale->AddCatalog(g_wxApp->GetAppName());
+		return true;
+	}
+	return false;
+}
+
+bool load_language()
+{
+	wxConfig config(g_wxApp->GetAppName());
+	long language;
+	if (!config.Read(wxT("wxTranslation_Language"),
+		&language, wxLANGUAGE_UNKNOWN))
+	{
+		language = wxLANGUAGE_UNKNOWN;
+	}
+	if (language == wxLANGUAGE_UNKNOWN) 
+		return false;
+	wxArrayString	names;
+	wxArrayLong		identifiers;
+	get_installed_languages(names, identifiers);
+	for (size_t i = 0; i < identifiers.Count(); i++)
+	{
+		if (identifiers[i] == language)
+		{
+			g_wxLocale = new wxLocale;
+			g_wxLocale->Init(identifiers[i]);
+			g_wxLocale->AddCatalogLookupPathPrefix(wxPathOnly(localization_dir()));
+			g_wxLocale->AddCatalog(g_wxApp->GetAppName());
+			return true;
+		}
+	}
+	return false;
+}
+
+void save_language()
+{
+	wxConfig config(g_wxApp->GetAppName());
+	long language = wxLANGUAGE_UNKNOWN;
+	if (g_wxLocale)	{
+		language = g_wxLocale->GetLanguage();
+	}
+	config.Write(wxT("wxTranslation_Language"), language);
+	config.Flush();
+}
+
+void get_installed_languages(wxArrayString & names,
+	wxArrayLong & identifiers)
+{
+	names.Clear();
+	identifiers.Clear();
+
+	wxDir dir(wxPathOnly(localization_dir()));
+	wxString filename;
+	const wxLanguageInfo * langinfo;
+	wxString name = wxLocale::GetLanguageName(wxLANGUAGE_DEFAULT);
+	if (!name.IsEmpty())
+	{
+		names.Add(_L("Default"));
+		identifiers.Add(wxLANGUAGE_DEFAULT);
+	}
+	for (bool cont = dir.GetFirst(&filename, wxEmptyString, wxDIR_DIRS);
+		cont; cont = dir.GetNext(&filename))
+	{
+		wxLogTrace(wxTraceMask(),
+			"L10n: Directory found = \"%s\"",
+			filename.GetData());
+		langinfo = wxLocale::FindLanguageInfo(filename);
+		if (langinfo != NULL)
+		{
+			auto full_file_name = dir.GetName() + wxFileName::GetPathSeparator() +
+				filename + wxFileName::GetPathSeparator() +
+				g_wxApp->GetAppName() + wxT(".mo");
+			if (wxFileExists(full_file_name))
+			{
+				names.Add(langinfo->Description);
+				identifiers.Add(langinfo->Language);
+			}
+		}
+	}
+}
+
+void add_debug_menu(wxMenuBar *menu, int event_language_change)
+{
+//#if 0
+    auto local_menu = new wxMenu();
+	local_menu->Append(wxWindow::NewControlId(1), _L("Change Application Language"));
+	local_menu->Bind(wxEVT_MENU, [event_language_change](wxEvent&){
+		wxArrayString names;
+		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);
+				g_wxApp->ProcessEvent(event);
+			}
+		}
+	});
+	menu->Append(local_menu, _T("&Localization"));
+//#endif
+}
+
+void create_preset_tabs(PresetBundle *preset_bundle, AppConfig *app_config,
+						bool no_controller, bool is_disabled_button_browse, bool is_user_agent,
+						int event_value_change, int event_presets_changed,
+						int event_button_browse, int event_button_test)
+{	
+	add_created_tab(new TabPrint	(g_wxTabPanel, no_controller), preset_bundle, app_config);
+	add_created_tab(new TabFilament	(g_wxTabPanel, no_controller), preset_bundle, app_config);
+	add_created_tab(new TabPrinter	(g_wxTabPanel, no_controller, is_disabled_button_browse, is_user_agent), 
+					preset_bundle, app_config);
+	for (size_t i = 0; i < g_wxTabPanel->GetPageCount(); ++ i) {
+		Tab *tab = dynamic_cast<Tab*>(g_wxTabPanel->GetPage(i));
+		if (! tab)
+			continue;
+		tab->set_event_value_change(wxEventType(event_value_change));
+		tab->set_event_presets_changed(wxEventType(event_presets_changed));
+		if (tab->name() == "printer"){
+			TabPrinter* tab_printer = static_cast<TabPrinter*>(tab);
+			tab_printer->set_event_button_browse(wxEventType(event_button_browse));
+			tab_printer->set_event_button_test(wxEventType(event_button_test));
+		}
+	}
+}
+
+TabIface* get_preset_tab_iface(char *name)
+{
+	for (size_t i = 0; i < g_wxTabPanel->GetPageCount(); ++ i) {
+		Tab *tab = dynamic_cast<Tab*>(g_wxTabPanel->GetPage(i));
+		if (! tab)
+			continue;
+		if (tab->name() == name) {
+			return new TabIface(tab);
+		}
+	}
+	return new TabIface(nullptr);
+}
+
+// opt_index = 0, by the reason of zero-index in ConfigOptionVector by default (in case only one element)
+void change_opt_value(DynamicPrintConfig& config, t_config_option_key opt_key, boost::any value, int opt_index /*= 0*/)
+{
+	try{
+		switch (config.def()->get(opt_key)->type){
+		case coFloatOrPercent:{
+			const auto &val = *config.option<ConfigOptionFloatOrPercent>(opt_key);
+			config.set_key_value(opt_key, new ConfigOptionFloatOrPercent(boost::any_cast<double>(value), val.percent));
+			break;}
+		case coPercent:
+			config.set_key_value(opt_key, new ConfigOptionPercent(boost::any_cast<double>(value)));
+			break;
+		case coFloat:{
+			double& val = config.opt_float(opt_key);
+			val = boost::any_cast<double>(value);
+			break;
+		}
+		case coPercents:
+		case coFloats:{
+			double& val = config.opt_float(opt_key, 0);
+			val = boost::any_cast<double>(value);
+			break;
+		}			
+		case coString:
+			config.set_key_value(opt_key, new ConfigOptionString(boost::any_cast<std::string>(value)));
+			break;
+		case coStrings:{
+			if (opt_key.compare("compatible_printers") == 0){
+				config.option<ConfigOptionStrings>(opt_key)->values.resize(0);
+				for (auto el : boost::any_cast<std::vector<std::string>>(value))
+					config.option<ConfigOptionStrings>(opt_key)->values.push_back(el);
+			}
+			else{
+				ConfigOptionStrings* vec_new = new ConfigOptionStrings{ boost::any_cast<std::string>(value) };
+				config.option<ConfigOptionStrings>(opt_key)->set_at(vec_new, opt_index, opt_index);
+			}
+			}
+			break;
+		case coBool:
+			config.set_key_value(opt_key, new ConfigOptionBool(boost::any_cast<bool>(value)));
+			break;
+		case coBools:{
+			ConfigOptionBools* vec_new = new ConfigOptionBools{ boost::any_cast<bool>(value) };
+			config.option<ConfigOptionBools>(opt_key)->set_at(vec_new, opt_index, opt_index);
+			break;}
+		case coInt:
+			config.set_key_value(opt_key, new ConfigOptionInt(boost::any_cast<int>(value)));
+			break;
+		case coInts:{
+			ConfigOptionInts* vec_new = new ConfigOptionInts{ boost::any_cast<int>(value) };
+			config.option<ConfigOptionInts>(opt_key)->set_at(vec_new, opt_index, opt_index);
+			}
+			break;
+		case coEnum:{
+			if (opt_key.compare("external_fill_pattern") == 0 ||
+				opt_key.compare("fill_pattern") == 0)
+				config.set_key_value(opt_key, new ConfigOptionEnum<InfillPattern>(boost::any_cast<InfillPattern>(value))); 
+			else if (opt_key.compare("gcode_flavor") == 0)
+				config.set_key_value(opt_key, new ConfigOptionEnum<GCodeFlavor>(boost::any_cast<GCodeFlavor>(value))); 
+			else if (opt_key.compare("support_material_pattern") == 0)
+				config.set_key_value(opt_key, new ConfigOptionEnum<SupportMaterialPattern>(boost::any_cast<SupportMaterialPattern>(value)));
+			else if (opt_key.compare("seam_position") == 0)
+				config.set_key_value(opt_key, new ConfigOptionEnum<SeamPosition>(boost::any_cast<SeamPosition>(value)));
+			}
+			break;
+		case coPoints:{
+			ConfigOptionPoints points;
+			points.values = boost::any_cast<std::vector<Pointf>>(value);
+			config.set_key_value(opt_key, new ConfigOptionPoints(points));
+			}
+			break;
+		case coNone:
+			break;
+		default:
+			break;
+		}
+	}
+	catch (const std::exception &e)
+	{
+		int i = 0;//no reason, just experiment
+	}
+}
+
+void add_created_tab(Tab* panel, PresetBundle *preset_bundle, AppConfig *app_config)
+{
+	panel->m_show_btn_incompatible_presets = app_config->get("show_incompatible_presets").empty();
+	panel->create_preset_tab(preset_bundle);
+
+	// Load the currently selected preset into the GUI, update the preset selection box.
+	panel->load_current_preset();
+	g_wxTabPanel->AddPage(panel, panel->title());
+}
+
+void show_error(wxWindow* parent, wxString message){
+	auto msg_wingow = new wxMessageDialog(parent, message, _L("Error"), wxOK | wxICON_ERROR);
+	msg_wingow->ShowModal();
+}
+
+void show_info(wxWindow* parent, wxString message, wxString title){
+	auto msg_wingow = new wxMessageDialog(parent, message, title.empty() ? _L("Notice") : title, wxOK | wxICON_INFORMATION);
+	msg_wingow->ShowModal();
+}
+
+wxApp* get_app(){
+	return g_wxApp;
 }

 void create_combochecklist(wxComboCtrl* comboCtrl, std::string text, std::string items, bool initial_value)
--- a/xs/src/slic3r/GUI/GUI.hpp
+++ b/xs/src/slic3r/GUI/GUI.hpp
@ -3,14 +3,50 @@

 #include <string>
 #include <vector>
+#include "Config.hpp"

 class wxApp;
 class wxFrame;
+class wxWindow;
 class wxMenuBar;
 class wxNotebook;
 class wxComboCtrl;
+class wxString;
+class wxArrayString;
+class wxArrayLong;

-namespace Slic3r { namespace GUI {
+namespace Slic3r { 
+
+class PresetBundle;
+class PresetCollection;
+class AppConfig;
+class DynamicPrintConfig;
+class TabIface;
+
+//! macro used to localization, return wxString
+#define _L(s) wxGetTranslation(s)
+//! macro used to localization, return const CharType *
+#define _LU8(s) wxGetTranslation(s).ToUTF8().data()
+
+namespace GUI {
+
+class Tab;
+// Map from an file_type name to full file wildcard name.
+typedef std::map<std::string, std::string> t_file_wild_card;
+inline t_file_wild_card& get_file_wild_card() {
+	static t_file_wild_card FILE_WILDCARDS;
+	if (FILE_WILDCARDS.empty()){
+		FILE_WILDCARDS["known"] = "Known files (*.stl, *.obj, *.amf, *.xml, *.prusa)|*.stl;*.STL;*.obj;*.OBJ;*.amf;*.AMF;*.xml;*.XML;*.prusa;*.PRUSA";
+		FILE_WILDCARDS["stl"] = "STL files (*.stl)|*.stl;*.STL";
+		FILE_WILDCARDS["obj"] = "OBJ files (*.obj)|*.obj;*.OBJ";
+		FILE_WILDCARDS["amf"] = "AMF files (*.amf)|*.amf;*.AMF;*.xml;*.XML";
+		FILE_WILDCARDS["prusa"] = "Prusa Control files (*.prusa)|*.prusa;*.PRUSA";
+		FILE_WILDCARDS["ini"] = "INI files *.ini|*.ini;*.INI";
+		FILE_WILDCARDS["gcode"] = "G-code files (*.gcode, *.gco, *.g, *.ngc)|*.gcode;*.GCODE;*.gco;*.GCO;*.g;*.G;*.ngc;*.NGC";
+		FILE_WILDCARDS["svg"] = "SVG files *.svg|*.svg;*.SVG";
+	}
+	return FILE_WILDCARDS;
+}

 void disable_screensaver();
 void enable_screensaver();
@ -23,10 +59,34 @@ void set_wxapp(wxApp *app);
 void set_main_frame(wxFrame *main_frame);
 void set_tab_panel(wxNotebook *tab_panel);

-void add_debug_menu(wxMenuBar *menu);
-// Create a new preset tab (print, filament or printer),
+void add_debug_menu(wxMenuBar *menu, int event_language_change);
+// Create a new preset tab (print, filament and printer),
+void create_preset_tabs(PresetBundle *preset_bundle, AppConfig *app_config, 
+						bool no_controller, bool is_disabled_button_browse,	bool is_user_agent,
+						int event_value_change, int event_presets_changed,
+						int event_button_browse, int event_button_test);
+TabIface* get_preset_tab_iface(char *name);
+
 // add it at the end of the tab panel.
-void create_preset_tab(const char *name);
+void add_created_tab(Tab* panel, PresetBundle *preset_bundle, AppConfig *app_config);
+// Change option value in config
+void change_opt_value(DynamicPrintConfig& config, t_config_option_key opt_key, boost::any value, int opt_index = 0);
+
+void show_error(wxWindow* parent, wxString message);
+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();
+// get list of installed languages 
+void get_installed_languages(wxArrayString & names, wxArrayLong & identifiers);
+// select language from the list of installed languages
+bool select_language(wxArrayString & names, wxArrayLong & identifiers);
+
+std::vector<Tab *>& get_tabs_list();
+bool checked_tab(Tab* tab);
+void delete_tab_from_list(Tab* tab);

 // Creates a wxCheckListBoxComboPopup inside the given wxComboCtrl, filled with the given text and items.
 // Items are all initialized to the given value.
--- a/xs/src/slic3r/GUI/OptionsGroup.cpp
+++ b/xs/src/slic3r/GUI/OptionsGroup.cpp
@ -0,0 +1,410 @@
+#include "OptionsGroup.hpp"
+#include "ConfigExceptions.hpp"
+
+#include <utility>
+#include <wx/tooltip.h>
+#include <wx/numformatter.h>
+
+namespace Slic3r { namespace GUI {
+
+const t_field& OptionsGroup::build_field(const Option& opt) {
+    return build_field(opt.opt_id, opt.opt);
+}
+const t_field& OptionsGroup::build_field(const t_config_option_key& id) {
+	const ConfigOptionDef& opt = m_options.at(id).opt;
+    return build_field(id, opt);
+}
+
+const t_field& OptionsGroup::build_field(const t_config_option_key& id, const ConfigOptionDef& opt) {
+    // Check the gui_type field first, fall through
+    // is the normal type.
+    if (opt.gui_type.compare("select") == 0) {
+    } else if (opt.gui_type.compare("select_open") == 0) {
+		m_fields.emplace(id, STDMOVE(Choice::Create<Choice>(m_parent, opt, id)));
+    } else if (opt.gui_type.compare("color") == 0) {
+		m_fields.emplace(id, STDMOVE(ColourPicker::Create<ColourPicker>(m_parent, opt, id)));
+    } else if (opt.gui_type.compare("f_enum_open") == 0 || 
+                opt.gui_type.compare("i_enum_open") == 0 ||
+                opt.gui_type.compare("i_enum_closed") == 0) {
+		m_fields.emplace(id, STDMOVE(Choice::Create<Choice>(m_parent, opt, id)));
+    } else if (opt.gui_type.compare("slider") == 0) {
+    } else if (opt.gui_type.compare("i_spin") == 0) { // Spinctrl
+    } else { 
+        switch (opt.type) {
+            case coFloatOrPercent:
+            case coFloat:
+            case coFloats:
+			case coPercent:
+			case coPercents:
+			case coString:
+			case coStrings:
+				m_fields.emplace(id, STDMOVE(TextCtrl::Create<TextCtrl>(m_parent, opt, id)));
+                break;
+			case coBool:
+			case coBools:
+				m_fields.emplace(id, STDMOVE(CheckBox::Create<CheckBox>(m_parent, opt, id)));
+				break;
+			case coInt:
+			case coInts:
+				m_fields.emplace(id, STDMOVE(SpinCtrl::Create<SpinCtrl>(m_parent, opt, id)));
+				break;
+            case coEnum:
+				m_fields.emplace(id, STDMOVE(Choice::Create<Choice>(m_parent, opt, id)));
+				break;
+            case coPoints:
+				m_fields.emplace(id, STDMOVE(PointCtrl::Create<PointCtrl>(m_parent, opt, id)));
+				break;
+            case coNone:   break;
+            default:
+				throw /*//!ConfigGUITypeError("")*/std::logic_error("This control doesn't exist till now"); break;
+        }
+    }
+    // Grab a reference to fields for convenience
+    const t_field& field = m_fields[id];
+	field->m_on_change = [this](std::string opt_id, boost::any value){
+			//! This function will be called from Field.					
+			//! Call OptionGroup._on_change(...)
+			if (!this->m_disabled) 
+				this->on_change_OG(opt_id, value);
+	};
+	field->m_on_kill_focus = [this](){
+			//! This function will be called from Field.					
+			if (!this->m_disabled) 
+				this->on_kill_focus();
+	};
+    field->m_parent = parent();
+    // assign function objects for callbacks, etc.
+    return field;
+}
+
+void OptionsGroup::append_line(const Line& line) {
+//!    if (line.sizer != nullptr || (line.widget != nullptr && line.full_width > 0)){
+	if ( (line.sizer != nullptr || line.widget != nullptr) && line.full_width){
+		if (line.sizer != nullptr) {
+            sizer->Add(line.sizer, 0, wxEXPAND | wxALL, wxOSX ? 0 : 15);
+            return;
+        }
+        if (line.widget != nullptr) {
+            sizer->Add(line.widget(m_parent), 0, wxEXPAND | wxALL, wxOSX ? 0 : 15);
+            return;
+        }
+    }
+
+	auto option_set = line.get_options();
+	for (auto opt : option_set) 
+		m_options.emplace(opt.opt_id, opt);
+
+	// if we have a single option with no label, no sidetext just add it directly to sizer
+	if (option_set.size() == 1 && label_width == 0 && option_set.front().opt.full_width &&
+		option_set.front().opt.sidetext.size() == 0 && option_set.front().side_widget == nullptr && 
+		line.get_extra_widgets().size() == 0) {
+		const auto& option = option_set.front();
+		const auto& field = build_field(option);
+
+		if (is_window_field(field))
+			sizer->Add(field->getWindow(), 0, wxEXPAND | wxALL, wxOSX ? 0 : 5);
+		if (is_sizer_field(field))
+			sizer->Add(field->getSizer(), 0, wxEXPAND | wxALL, wxOSX ? 0 : 5);
+		return;
+	}
+
+    auto grid_sizer = m_grid_sizer;
+
+    // Build a label if we have it
+    if (label_width != 0) {
+		auto label = new wxStaticText(parent(), wxID_ANY, line.label + (line.label.IsEmpty() ? "" : ":"), 
+							wxDefaultPosition, wxSize(label_width, -1));
+        label->SetFont(label_font);
+        label->Wrap(label_width); // avoid a Linux/GTK bug
+		grid_sizer->Add(label, 0, wxALIGN_CENTER_VERTICAL,0);
+		if (line.label_tooltip.compare("") != 0)
+			label->SetToolTip(line.label_tooltip);
+    }
+
+    // If there's a widget, build it and add the result to the sizer.
+    if (line.widget != nullptr) {
+        auto wgt = line.widget(parent());
+		grid_sizer->Add(wgt, 0, wxEXPAND | wxBOTTOM | wxTOP, wxOSX ? 0 : 5);
+        return;
+    }
+    
+    // if we have a single option with no sidetext just add it directly to the grid sizer
+    if (option_set.size() == 1 && option_set.front().opt.sidetext.size() == 0 &&
+        option_set.front().side_widget == nullptr && line.get_extra_widgets().size() == 0) {
+        const auto& option = option_set.front();
+        const auto& field = build_field(option);
+//!         std::cerr << "single option, no sidetext.\n";
+//!         std::cerr << "field parent is not null?: " << (field->parent != nullptr) << "\n";
+
+        if (is_window_field(field)) 
+			grid_sizer->Add(field->getWindow(), 0, (option.opt.full_width ? wxEXPAND : 0) |
+							wxBOTTOM | wxTOP | wxALIGN_CENTER_VERTICAL, wxOSX ? 0 : 2);
+        if (is_sizer_field(field)) 
+            grid_sizer->Add(field->getSizer(), 0, (option.opt.full_width ? wxEXPAND : 0) | wxALIGN_CENTER_VERTICAL, 0);
+        return;
+    }
+
+    // if we're here, we have more than one option or a single option with sidetext
+    // so we need a horizontal sizer to arrange these things
+    auto sizer = new wxBoxSizer(wxHORIZONTAL);
+	grid_sizer->Add(sizer, 0, wxEXPAND | wxALL, 0);
+	for (auto opt : option_set) {
+		ConfigOptionDef option = opt.opt;
+		// add label if any
+		if (option.label != "") {
+			auto field_label = new wxStaticText(parent(), wxID_ANY, wxString::FromUTF8(option.label.c_str()) + ":", wxDefaultPosition, wxDefaultSize);
+			field_label->SetFont(label_font);
+			sizer->Add(field_label, 0, wxALIGN_CENTER_VERTICAL, 0);
+		}
+
+		// add field
+		const Option& opt_ref = opt;
+		auto& field = build_field(opt_ref);
+		is_sizer_field(field) ? 
+			sizer->Add(field->getSizer(), 0, wxALIGN_CENTER_VERTICAL, 0) :
+			sizer->Add(field->getWindow(), 0, wxALIGN_CENTER_VERTICAL, 0);
+		
+		// add sidetext if any
+		if (option.sidetext != "") {
+			auto sidetext = new wxStaticText(parent(), wxID_ANY, wxString::FromUTF8(option.sidetext.c_str()), wxDefaultPosition, wxDefaultSize);
+			sidetext->SetFont(sidetext_font);
+			sizer->Add(sidetext, 0, wxLEFT | wxALIGN_CENTER_VERTICAL, 4);
+		}
+
+		// add side widget if any
+		if (opt.side_widget != nullptr) {
+			sizer->Add(opt.side_widget(parent())/*!.target<wxWindow>()*/, 0, wxLEFT | wxALIGN_CENTER_VERTICAL, 1);	//! requires verification
+		}
+
+		if (opt.opt_id != option_set.back().opt_id) //! istead of (opt != option_set.back())
+		{
+			sizer->AddSpacer(6);
+	    }
+	}
+	// add extra sizers if any
+	for (auto extra_widget : line.get_extra_widgets()) {
+		sizer->Add(extra_widget(parent())/*!.target<wxWindow>()*/, 0, wxLEFT | wxALIGN_CENTER_VERTICAL, 4);		//! requires verification
+	}
+}
+
+Line OptionsGroup::create_single_option_line(const Option& option) const {
+	Line retval{ wxString::FromUTF8(option.opt.label.c_str()), wxString::FromUTF8(option.opt.tooltip.c_str()) };
+    Option tmp(option);
+    tmp.opt.label = std::string("");
+    retval.append_option(tmp);
+    return retval;
+}
+
+void OptionsGroup::on_change_OG(t_config_option_key id, /*config_value*/boost::any value) {
+	if (m_on_change != nullptr)
+		m_on_change(id, value);
+}
+
+Option ConfigOptionsGroup::get_option(const std::string opt_key, int opt_index /*= -1*/)
+{
+	if (!m_config->has(opt_key)) {
+		//! exception  ("No $opt_key in ConfigOptionsGroup config");
+	}
+
+	std::string opt_id = opt_index == -1 ? opt_key : opt_key + "#" + std::to_string(opt_index);
+	std::pair<std::string, int> pair(opt_key, opt_index);
+	m_opt_map.emplace(opt_id, pair);
+
+	return Option(*m_config->def()->get(opt_key), opt_id);
+}
+
+void ConfigOptionsGroup::on_change_OG(t_config_option_key opt_id, boost::any value)
+{
+	if (!m_opt_map.empty())
+	{
+		auto it = m_opt_map.find(opt_id);
+		if (it == m_opt_map.end())
+		{
+			OptionsGroup::on_change_OG(opt_id, value);
+			return;
+		}		
+
+		auto itOption = it->second;
+		std::string opt_key = itOption.first;
+		int opt_index = itOption.second;
+
+		auto option = m_options.at(opt_id).opt;
+
+		// get value
+//!		auto field_value = get_value(opt_id);
+		if (option.gui_flags.compare("serialized")==0) {
+			if (opt_index != -1){
+				// 		die "Can't set serialized option indexed value" ;
+			}
+			// 		# Split a string to multiple strings by a semi - colon.This is the old way of storing multi - string values.
+			// 		# Currently used for the post_process config value only.
+			// 		my @values = split / ; / , $field_value;
+			// 		$self->config->set($opt_key, \@values);
+		}
+		else {
+			if (opt_index == -1) {
+				// change_opt_value(*m_config, opt_key, field_value);
+				//!? why field_value?? in this case changed value will be lose! No?
+				change_opt_value(*m_config, opt_key, value);
+			}
+			else {
+				change_opt_value(*m_config, opt_key, value, opt_index);
+// 				auto value = m_config->get($opt_key);
+// 				$value->[$opt_index] = $field_value;
+// 				$self->config->set($opt_key, $value);
+			}
+		}
+	}
+
+	OptionsGroup::on_change_OG(opt_id, value); //!? Why doing this
+}
+
+void ConfigOptionsGroup::reload_config(){
+	for (std::map< std::string, std::pair<std::string, int> >::iterator it = m_opt_map.begin(); it != m_opt_map.end(); ++it) {
+		auto opt_id = it->first;
+		std::string opt_key = m_opt_map.at(opt_id).first;
+		int opt_index = m_opt_map.at(opt_id).second;
+		auto option = m_options.at(opt_id).opt;
+		set_value(opt_id, config_value(opt_key, opt_index, option.gui_flags.compare("serialized") == 0 ));
+	}
+
+}
+
+boost::any ConfigOptionsGroup::config_value(std::string opt_key, int opt_index, bool deserialize){
+
+	if (deserialize) {
+		// Want to edit a vector value(currently only multi - strings) in a single edit box.
+		// Aggregate the strings the old way.
+		// Currently used for the post_process config value only.
+		if (opt_index != -1)
+			throw std::out_of_range("Can't deserialize option indexed value");
+// 		return join(';', m_config->get(opt_key)});
+		return get_config_value(*m_config, opt_key);
+	}
+	else {
+//		return opt_index == -1 ? m_config->get(opt_key) : m_config->get_at(opt_key, opt_index);
+		return get_config_value(*m_config, opt_key, opt_index);
+	}
+}
+
+wxString double_to_string(double const value)
+{
+	int precision = 10 * value - int(10 * value) == 0 ? 1 : 2; 
+	return value - int(value) == 0 ?
+		wxString::Format(_T("%i"), int(value)) :
+		wxNumberFormatter::ToString(value, precision, wxNumberFormatter::Style_None);
+}
+
+boost::any ConfigOptionsGroup::get_config_value(DynamicPrintConfig& config, std::string opt_key, int opt_index/* = -1*/)
+{
+	size_t idx = opt_index == -1 ? 0 : opt_index;
+	
+	boost::any ret;
+	wxString text_value = wxString("");
+	const ConfigOptionDef* opt = config.def()->get(opt_key);
+	switch (opt->type){
+	case coFloatOrPercent:{
+		const auto &value = *config.option<ConfigOptionFloatOrPercent>(opt_key);
+		if (value.percent)
+		{
+			text_value = wxString::Format(_T("%i"), int(value.value));
+			text_value += "%";
+		}
+		else
+			text_value = double_to_string(value.value);
+		ret = text_value;
+		break;
+	}
+	case coPercent:{
+		double val = config.option<ConfigOptionPercent>(opt_key)->value;
+		text_value = wxString::Format(_T("%i"), int(val));
+		ret = text_value;// += "%";
+	}
+		break;
+	case coPercents:
+	case coFloats:
+	case coFloat:{
+		double val = opt->type == coFloats ?
+					config.opt_float(opt_key, idx/*0opt_index*/) :
+						opt->type == coFloat ? config.opt_float(opt_key) :
+						config.option<ConfigOptionPercents>(opt_key)->values.at(idx/*0*/);
+		ret = double_to_string(val);
+		}
+		break;
+	case coString:
+		ret = static_cast<wxString>(config.opt_string(opt_key));
+		break;
+	case coStrings:
+		if (config.option<ConfigOptionStrings>(opt_key)->values.empty())
+			ret = text_value;
+		else
+			ret = static_cast<wxString>(config.opt_string(opt_key, static_cast<unsigned int>(idx/*0*/)/*opt_index*/));
+		break;
+	case coBool:
+		ret = config.opt_bool(opt_key);
+		break;
+	case coBools:
+		ret = config.opt_bool(opt_key, idx/*0opt_index*/);
+		break;
+	case coInt:
+		ret = config.opt_int(opt_key);
+		break;
+	case coInts:
+		ret = config.opt_int(opt_key, idx/*0/*opt_index*/);
+		break;
+	case coEnum:{
+		if (opt_key.compare("external_fill_pattern") == 0 ||
+			opt_key.compare("fill_pattern") == 0 ){
+			ret = static_cast<int>(config.option<ConfigOptionEnum<InfillPattern>>(opt_key)->value);
+		}
+		else if (opt_key.compare("gcode_flavor") == 0 ){
+			ret = static_cast<int>(config.option<ConfigOptionEnum<GCodeFlavor>>(opt_key)->value);
+		}
+		else if (opt_key.compare("support_material_pattern") == 0){
+			ret = static_cast<int>(config.option<ConfigOptionEnum<SupportMaterialPattern>>(opt_key)->value);
+		}
+		else if (opt_key.compare("seam_position") == 0)
+			ret = static_cast<int>(config.option<ConfigOptionEnum<SeamPosition>>(opt_key)->value);
+	}
+		break;
+	case coPoints:{
+		const auto &value = *config.option<ConfigOptionPoints>(opt_key);
+		ret = value.values.at(idx/*0*/);
+		}
+		break;
+	case coNone:
+	default:
+		break;
+	}
+	return ret;
+}
+
+Field* ConfigOptionsGroup::get_fieldc(t_config_option_key opt_key, int opt_index){
+	std::string opt_id = "";
+	for (std::map< std::string, std::pair<std::string, int> >::iterator it = m_opt_map.begin(); it != m_opt_map.end(); ++it) {
+		if (opt_key == m_opt_map.at(it->first).first && opt_index == m_opt_map.at(it->first).second){
+			opt_id = it->first;
+			break;
+		}
+	}
+	return opt_id.empty() ? nullptr : get_field(opt_id);
+}
+
+void ogStaticText::SetText(wxString value)
+{
+	SetLabel(value);
+	Wrap(400);
+	GetParent()->Layout();
+}
+
+void Option::translate()
+{
+	opt.label = _LU8(opt.label);
+	opt.tooltip = _LU8(opt.tooltip);
+	opt.sidetext = _LU8(opt.sidetext);
+	opt.full_label = _LU8(opt.full_label);
+	opt.category = _LU8(opt.category);
+}
+
+} // GUI
+} // Slic3r
--- a/xs/src/slic3r/GUI/OptionsGroup.hpp
+++ b/xs/src/slic3r/GUI/OptionsGroup.hpp
@ -0,0 +1,181 @@
+#include <wx/wx.h>
+#include <wx/stattext.h>
+#include <wx/settings.h>
+//#include <wx/window.h>
+
+#include <map>
+#include <functional>
+
+#include "libslic3r/Config.hpp"
+#include "libslic3r/PrintConfig.hpp"
+#include "libslic3r/libslic3r.h"
+
+#include "Field.hpp"
+
+// Translate the ifdef 
+#ifdef __WXOSX__
+    #define wxOSX true
+#else
+    #define wxOSX false
+#endif
+
+#define BORDER(a, b) ((wxOSX ? a : b))
+
+namespace Slic3r { namespace GUI {
+
+/// Widget type describes a function object that returns a wxWindow (our widget) and accepts a wxWidget (parent window).
+using widget_t = std::function<wxSizer*(wxWindow*)>;//!std::function<wxWindow*(wxWindow*)>;
+using column_t = std::function<wxSizer*(const Line&)>;
+
+/// Wraps a ConfigOptionDef and adds function object for creating a side_widget.
+struct Option {
+	ConfigOptionDef			opt { ConfigOptionDef() };
+	t_config_option_key		opt_id;//! {""};
+    widget_t				side_widget {nullptr};
+    bool					readonly {false};
+
+	Option(const ConfigOptionDef& _opt, t_config_option_key id) :
+		opt(_opt), opt_id(id) { translate(); }
+	void		translate();
+};
+using t_option = std::unique_ptr<Option>;	//!
+
+/// Represents option lines
+class Line {
+public:
+    wxString	label {wxString("")};
+    wxString	label_tooltip {wxString("")};
+    size_t		full_width {0}; 
+    wxSizer*	sizer {nullptr};
+    widget_t	widget {nullptr};
+
+    void append_option(const Option& option) {
+        m_options.push_back(option);
+    }
+	void append_widget(const widget_t widget) {
+		m_extra_widgets.push_back(widget);
+    }
+	Line(wxString label, wxString tooltip) :
+		label(label), label_tooltip(tooltip) {}
+
+    const std::vector<widget_t>&	get_extra_widgets() const {return m_extra_widgets;}
+    const std::vector<Option>&		get_options() const { return m_options; }
+
+private:
+	std::vector<Option>		m_options;//! {std::vector<Option>()};
+    std::vector<widget_t>	m_extra_widgets;//! {std::vector<widget_t>()};
+};
+
+using t_optionfield_map = std::map<t_config_option_key, t_field>;
+
+class OptionsGroup {
+public:
+    const bool		staticbox {true};
+    const wxString	title {wxString("")};
+    size_t			label_width {200};
+    wxSizer*		sizer {nullptr};
+    column_t		extra_column {nullptr};
+    t_change		m_on_change {nullptr};
+
+    wxFont			sidetext_font {wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT) };
+    wxFont			label_font {wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT) };
+
+    /// Returns a copy of the pointer of the parent wxWindow.
+    /// Accessor function is because users are not allowed to change the parent
+    /// but defining it as const means a lot of const_casts to deal with wx functions.
+    inline wxWindow* parent() const { return m_parent; }
+
+    void		append_line(const Line& line);
+    Line		create_single_option_line(const Option& option) const;
+    void		append_single_option_line(const Option& option) { append_line(create_single_option_line(option)); }
+
+    // return a non-owning pointer reference 
+    inline /*const*/ Field*	get_field(t_config_option_key id) const { try { return m_fields.at(id).get(); } catch (std::out_of_range e) { return nullptr; } }
+	bool			set_value(t_config_option_key id, boost::any value) { try { m_fields.at(id)->set_value(value); return true; } catch (std::out_of_range e) { return false; } }
+	boost::any		get_value(t_config_option_key id) { boost::any out; try { out = m_fields.at(id)->get_value(); } catch (std::out_of_range e) { ; } return out; }
+
+	inline void		enable() { for (auto& field : m_fields) field.second->enable(); }
+    inline void		disable() { for (auto& field : m_fields) field.second->disable(); }
+
+    OptionsGroup(wxWindow* _parent, wxString title) : 
+		m_parent(_parent), title(title) {
+        sizer = (staticbox ? new wxStaticBoxSizer(new wxStaticBox(_parent, wxID_ANY, title), wxVERTICAL) : new wxBoxSizer(wxVERTICAL));
+        auto num_columns = 1U;
+        if (label_width != 0) num_columns++;
+        if (extra_column != nullptr) num_columns++;
+        m_grid_sizer = new wxFlexGridSizer(0, num_columns, 0,0);
+        static_cast<wxFlexGridSizer*>(m_grid_sizer)->SetFlexibleDirection(wxHORIZONTAL);
+        static_cast<wxFlexGridSizer*>(m_grid_sizer)->AddGrowableCol(label_width != 0);
+
+        sizer->Add(m_grid_sizer, 0, wxEXPAND | wxALL, wxOSX ? 0: 5);
+    }
+
+protected:
+	std::map<t_config_option_key, Option>	m_options;
+    wxWindow*				m_parent {nullptr};
+
+    /// Field list, contains unique_ptrs of the derived type.
+    /// using types that need to know what it is beyond the public interface 
+    /// need to cast based on the related ConfigOptionDef.
+    t_optionfield_map		m_fields;
+    bool					m_disabled {false};
+    wxGridSizer*			m_grid_sizer {nullptr};
+
+    /// Generate a wxSizer or wxWindow from a configuration option
+    /// Precondition: opt resolves to a known ConfigOption
+    /// Postcondition: fields contains a wx gui object.
+    const t_field&		build_field(const t_config_option_key& id, const ConfigOptionDef& opt);
+    const t_field&		build_field(const t_config_option_key& id);
+    const t_field&		build_field(const Option& opt);
+
+    virtual void		on_kill_focus (){};
+	virtual void		on_change_OG(t_config_option_key opt_id, boost::any value);
+};
+
+class ConfigOptionsGroup: public OptionsGroup {
+public:
+	ConfigOptionsGroup(wxWindow* parent, wxString title, DynamicPrintConfig* _config = nullptr) : 
+		OptionsGroup(parent, title), m_config(_config) {}
+
+    /// reference to libslic3r config, non-owning pointer (?).
+    DynamicPrintConfig*		m_config {nullptr};
+    bool					m_full_labels {0};
+	std::map< std::string, std::pair<std::string, int> > m_opt_map;
+
+	Option		get_option(const std::string opt_key, int opt_index = -1);
+	Line		create_single_option_line(const std::string title, int idx = -1) /*const*/{
+		Option option = get_option(title, idx);
+		return OptionsGroup::create_single_option_line(option);
+	}
+	void		append_single_option_line(const Option& option)	{
+		OptionsGroup::append_single_option_line(option);
+	}
+	void		append_single_option_line(const std::string title, int idx = -1)
+	{
+		Option option = get_option(title, idx);
+		append_single_option_line(option);		
+	}
+
+	void		on_change_OG(t_config_option_key opt_id, boost::any value) override;
+	void		on_kill_focus() override
+	{
+		reload_config();
+	}
+	void		reload_config();
+	boost::any	config_value(std::string opt_key, int opt_index, bool deserialize);
+	// return option value from config 
+	boost::any	get_config_value(DynamicPrintConfig& config, std::string opt_key, int opt_index = -1);
+	Field*		get_fieldc(t_config_option_key opt_key, int opt_index);
+};
+
+//  Static text shown among the options.
+class ogStaticText :public wxStaticText{
+public:
+	ogStaticText() {}
+	ogStaticText(wxWindow* parent, const char *text) : wxStaticText(parent, wxID_ANY, text, wxDefaultPosition, wxDefaultSize){}
+	~ogStaticText(){}
+
+	void SetText(wxString value);
+};
+
+}}
--- a/xs/src/slic3r/GUI/Tab.cpp
+++ b/xs/src/slic3r/GUI/Tab.cpp
--- a/xs/src/slic3r/GUI/Tab.hpp
+++ b/xs/src/slic3r/GUI/Tab.hpp
@ -0,0 +1,260 @@
+//	 The "Expert" tab at the right of the main tabbed window.
+//	
+//	 This file implements following packages:
+//	   Slic3r::GUI::Tab;
+//	       Slic3r::GUI::Tab::Print;
+//	       Slic3r::GUI::Tab::Filament;
+//	       Slic3r::GUI::Tab::Printer;
+//	   Slic3r::GUI::Tab::Page
+//	       - Option page: For example, the Slic3r::GUI::Tab::Print has option pages "Layers and perimeters", "Infill", "Skirt and brim" ...
+//	   Slic3r::GUI::SavePresetWindow
+//	       - Dialog to select a new preset name to store the configuration.
+//	   Slic3r::GUI::Tab::Preset;
+//	       - Single preset item: name, file is default or external.
+
+#include <wx/panel.h>
+#include <wx/notebook.h>
+#include <wx/scrolwin.h>
+#include <wx/sizer.h>
+#include <wx/bmpcbox.h>
+#include <wx/bmpbuttn.h>
+#include <wx/treectrl.h>
+#include <wx/imaglist.h>
+#include <wx/statbox.h>
+
+#include <map>
+#include <vector>
+#include <memory>
+
+#include "BedShapeDialog.hpp"
+
+//!enum { ID_TAB_TREE = wxID_HIGHEST + 1 };
+
+namespace Slic3r {
+namespace GUI {
+
+// Single Tab page containing a{ vsizer } of{ optgroups }
+// package Slic3r::GUI::Tab::Page;
+using ConfigOptionsGroupShp = std::shared_ptr<ConfigOptionsGroup>;
+class Page : public wxScrolledWindow
+{
+	wxWindow*		m_parent;
+	wxString		m_title;
+	size_t			m_iconID;
+	wxBoxSizer*		m_vsizer;
+public:
+	Page(wxWindow* parent, const wxString title, const int iconID) :
+			m_parent(parent),
+			m_title(title),
+			m_iconID(iconID)
+	{
+		Create(m_parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxTAB_TRAVERSAL);
+		m_vsizer = new wxBoxSizer(wxVERTICAL);
+		SetSizer(m_vsizer);
+	}
+	~Page(){}
+
+public:
+	std::vector <ConfigOptionsGroupShp> m_optgroups;
+	DynamicPrintConfig* m_config;
+
+	wxBoxSizer*	vsizer() const { return m_vsizer; }
+	wxWindow*	parent() const { return m_parent; }
+	wxString	title()	 const { return m_title; }
+	size_t		iconID() const { return m_iconID; }
+	void		set_config(DynamicPrintConfig* config_in) { m_config = config_in; }
+	void		reload_config();
+	Field*		get_field(t_config_option_key opt_key, int opt_index = -1) const;
+	bool		set_value(t_config_option_key opt_key, boost::any value);
+	ConfigOptionsGroupShp	new_optgroup(wxString title, int noncommon_label_width = -1);
+};
+
+// Slic3r::GUI::Tab;
+
+using PageShp = std::shared_ptr<Page>;
+class Tab: public wxPanel
+{
+	wxNotebook*			m_parent;
+protected:
+	std::string			m_name;
+	const wxString		m_title;
+	wxBitmapComboBox*	m_presets_choice;
+	wxBitmapButton*		m_btn_save_preset;
+	wxBitmapButton*		m_btn_delete_preset;
+	wxBitmap*			m_bmp_show_incompatible_presets;
+	wxBitmap*			m_bmp_hide_incompatible_presets;
+	wxBitmapButton*		m_btn_hide_incompatible_presets;
+	wxBoxSizer*			m_hsizer;
+	wxBoxSizer*			m_left_sizer;
+	wxTreeCtrl*			m_treectrl;
+	wxImageList*		m_icons;
+	wxCheckBox*			m_compatible_printers_checkbox;
+	wxButton*			m_compatible_printers_btn;
+
+	int					m_icon_count;
+	std::map<std::string, size_t>	m_icon_index;		// Map from an icon file name to its index in $self->{icons}.
+	std::vector<PageShp>			m_pages;	// $self->{pages} = [];
+	bool				m_disable_tree_sel_changed_event;
+	bool				m_show_incompatible_presets;
+	bool				m_no_controller;
+
+	std::vector<std::string>	m_reload_dependent_tabs = {};
+
+	// The two following two event IDs are generated at Plater.pm by calling Wx::NewEventType.
+	wxEventType			m_event_value_change = 0;
+	wxEventType 		m_event_presets_changed = 0;
+
+public:
+	PresetBundle*		m_preset_bundle;
+	bool				m_show_btn_incompatible_presets;
+	PresetCollection*	m_presets;
+	DynamicPrintConfig*	m_config;
+
+public:
+	Tab() {}
+	Tab(wxNotebook* parent, wxString title, const char* name, bool no_controller) : 
+		m_parent(parent), m_title(title), m_name(name), m_no_controller(no_controller) {
+		Create(parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxBK_LEFT | wxTAB_TRAVERSAL);
+		get_tabs_list().push_back(this);
+	}
+	~Tab() { delete_tab_from_list(this); }
+
+	wxWindow*	parent() const { return m_parent; }
+	wxString	title()	 const { return m_title; }
+	std::string	name()	 const { return m_name; }
+
+	// Set the events to the callbacks posted to the main frame window (currently implemented in Perl).
+	void 		set_event_value_change(wxEventType evt) { m_event_value_change = evt; }
+	void 		set_event_presets_changed(wxEventType evt) { m_event_presets_changed = evt; }
+	
+	void		create_preset_tab(PresetBundle *preset_bundle);
+	void		load_current_preset();
+	void		rebuild_page_tree();
+	void		select_preset(std::string preset_name = "");
+	bool		may_discard_current_dirty_preset(PresetCollection* presets = nullptr, std::string new_printer_name = "");
+	wxSizer*	compatible_printers_widget(wxWindow* parent, wxCheckBox** checkbox, wxButton** btn);
+
+	void		load_key_value(std::string opt_key, boost::any value);
+	void		reload_compatible_printers_widget();
+
+	void		OnTreeSelChange(wxTreeEvent& event);
+	void		OnKeyDown(wxKeyEvent& event);
+
+	void		save_preset(std::string name = "");
+	void		delete_preset();
+	void		toggle_show_hide_incompatible();
+	void		update_show_hide_incompatible_button();
+	void		update_ui_from_settings();
+	
+	PageShp		add_options_page(wxString title, std::string icon, bool is_extruder_pages = false);
+
+	virtual void	OnActivate(){}
+	virtual void	on_preset_loaded(){}
+	virtual void	build() = 0;
+	virtual void	update() = 0;
+	void			update_dirty();
+	void			update_tab_ui();
+	void			load_config(DynamicPrintConfig config);
+	virtual void	reload_config();
+	Field*			get_field(t_config_option_key opt_key, int opt_index = -1) const;
+	bool			set_value(t_config_option_key opt_key, boost::any value);
+	wxSizer*		description_line_widget(wxWindow* parent, ogStaticText** StaticText);
+	bool			current_preset_is_dirty();
+	DynamicPrintConfig*	get_config() { return m_config; }
+	PresetCollection*	get_presets()
+	{
+		return m_presets;
+	}
+	std::vector<std::string>	get_dependent_tabs() { return m_reload_dependent_tabs; }
+
+	void			on_value_change(std::string opt_key, boost::any value);
+
+protected:
+	void			on_presets_changed();
+};
+
+//Slic3r::GUI::Tab::Print;
+class TabPrint : public Tab
+{
+public:
+	TabPrint() {}
+	TabPrint(wxNotebook* parent, bool no_controller) : 
+		Tab(parent, _L("Print Settings"), "print", no_controller) {}
+	~TabPrint(){}
+
+	ogStaticText*	m_recommended_thin_wall_thickness_description_line;
+	bool		m_support_material_overhangs_queried = false;
+
+	void		build() override;
+	void		reload_config() override;
+	void		update() override;
+	void		OnActivate() override;
+};
+
+//Slic3r::GUI::Tab::Filament;
+class TabFilament : public Tab
+{
+	ogStaticText*	m_volumetric_speed_description_line;
+	ogStaticText*	m_cooling_description_line;
+public:
+	TabFilament() {}
+	TabFilament(wxNotebook* parent, bool no_controller) : 
+		Tab(parent, _L("Filament Settings"), "filament", no_controller) {}
+	~TabFilament(){}
+
+	void		build() override;
+	void		reload_config() override;
+	void		update() override;
+	void		OnActivate() override;
+};
+
+//Slic3r::GUI::Tab::Printer;
+class TabPrinter : public Tab
+{
+	bool		m_is_disabled_button_browse;
+	bool		m_is_user_agent;
+	// similar event by clicking Buttons "Browse" & "Test"
+	wxEventType	m_event_button_browse = 0;
+	wxEventType m_event_button_test = 0;
+public:
+	wxButton*	m_serial_test_btn;
+	wxButton*	m_octoprint_host_test_btn;
+
+	size_t		m_extruders_count;
+	std::vector<PageShp>	m_extruder_pages;
+
+	TabPrinter() {}
+	TabPrinter(wxNotebook* parent, bool no_controller, bool is_disabled_btn_browse, bool is_user_agent) :
+		Tab(parent, _L("Printer Settings"), "printer", no_controller),
+		m_is_disabled_button_browse(is_disabled_btn_browse), 
+		m_is_user_agent(is_user_agent) {}
+	~TabPrinter(){}
+
+	void		build() override;
+	void		update() override;
+	void		update_serial_ports();
+	void		extruders_count_changed(size_t extruders_count);
+	void		build_extruder_pages();
+	void		on_preset_loaded() override;
+
+	// Set the events to the callbacks posted to the main frame window (currently implemented in Perl).
+	void		set_event_button_browse(wxEventType evt)	{ m_event_button_browse = evt; }
+	void		set_event_button_test(wxEventType evt)		{ m_event_button_test = evt; }
+};
+
+class SavePresetWindow :public wxDialog
+{
+public:
+	SavePresetWindow(wxWindow* parent) :wxDialog(parent, wxID_ANY, _L("Save preset")){}
+	~SavePresetWindow(){}
+
+	std::string		m_chosen_name;
+	wxComboBox*		m_combo;
+
+	void			build(wxString title, std::string default_name, std::vector<std::string> &values);
+	void			accept();
+	std::string		get_name() { return m_chosen_name; }
+};
+
+} // GUI
+} // Slic3r
--- a/xs/src/slic3r/GUI/TabIface.cpp
+++ b/xs/src/slic3r/GUI/TabIface.cpp
@ -0,0 +1,19 @@
+#include "TabIface.hpp"
+#include "Tab.hpp"
+
+namespace Slic3r {
+
+void	TabIface::load_current_preset()		{ m_tab->load_current_preset(); }
+void	TabIface::update_tab_ui()			{ m_tab->update_tab_ui(); }
+void	TabIface::update_ui_from_settings()	{ m_tab->update_ui_from_settings();}
+void	TabIface::select_preset(char* name)	{ m_tab->select_preset(name);}
+void	TabIface::load_config(DynamicPrintConfig* config)	{ m_tab->load_config(*config);}
+void	TabIface::load_key_value(char* opt_key, char* value){ m_tab->load_key_value(opt_key, static_cast<std::string>(value)); }
+bool	TabIface::current_preset_is_dirty()					{ return m_tab->current_preset_is_dirty();}
+void	TabIface::OnActivate()								{ return m_tab->OnActivate();}
+std::string					TabIface::title()				{ return m_tab->title().ToStdString();}
+DynamicPrintConfig*			TabIface::get_config()			{ return m_tab->get_config(); }
+PresetCollection*			TabIface::get_presets()			{ return m_tab!=nullptr ? m_tab->get_presets() : nullptr; }
+std::vector<std::string>	TabIface::get_dependent_tabs()	{ return m_tab->get_dependent_tabs(); }
+
+}; // namespace Slic3r
--- a/xs/src/slic3r/GUI/TabIface.hpp
+++ b/xs/src/slic3r/GUI/TabIface.hpp
@ -0,0 +1,35 @@
+#include <vector>
+#include <string>
+
+namespace Slic3r {
+	class DynamicPrintConfig;
+	class PresetCollection;
+
+namespace GUI {
+	class Tab;
+}
+
+class TabIface {
+public:
+	TabIface() : m_tab(nullptr) {}
+	TabIface(GUI::Tab *tab) : m_tab(tab) {}
+//	TabIface(const TabIface &rhs) : m_tab(rhs.m_tab) {}
+
+	void		load_current_preset();
+	void		update_tab_ui();
+	void		update_ui_from_settings();
+	void		select_preset(char* name);
+	std::string title();
+	void		load_config(DynamicPrintConfig* config);
+	void		load_key_value(char* opt_key, char* value);
+	bool		current_preset_is_dirty();
+	void		OnActivate();
+	DynamicPrintConfig*			get_config();
+	PresetCollection*			get_presets();
+	std::vector<std::string>	get_dependent_tabs();
+
+protected:
+	GUI::Tab   *m_tab;
+};
+
+}; // namespace Slic3r
--- a/xs/src/slic3r/GUI/Widget.hpp
+++ b/xs/src/slic3r/GUI/Widget.hpp
@ -0,0 +1,16 @@
+#ifndef WIDGET_HPP
+#define WIDGET_HPP
+#include <wx/wxprec.h>
+#ifndef WX_PRECOM
+#include <wx/wx.h>
+#endif
+
+class Widget {
+protected:
+    wxSizer* _sizer;
+public:
+    Widget(): _sizer(nullptr) { }
+    bool valid() const { return _sizer != nullptr; } 
+    wxSizer* sizer() const { return _sizer; } 
+};
+#endif
--- a/xs/src/slic3r/GUI/wxinit.h
+++ b/xs/src/slic3r/GUI/wxinit.h
@ -0,0 +1,25 @@
+#ifndef slic3r_wxinit_hpp_
+#define slic3r_wxinit_hpp_
+
+#include <wx/wx.h>
+#include <wx/intl.h>
+#include <wx/html/htmlwin.h>
+
+// Perl redefines a _ macro, so we undef this one
+#undef _
+
+// We do want to use translation however, so define it as __ so we can do a find/replace
+// later when we no longer need to undef _
+#define __(s)                     wxGetTranslation((s))
+
+// legacy macros
+// https://wiki.wxwidgets.org/EventTypes_and_Event-Table_Macros
+#ifndef wxEVT_BUTTON
+#define wxEVT_BUTTON wxEVT_COMMAND_BUTTON_CLICKED
+#endif
+
+#ifndef wxEVT_HTML_LINK_CLICKED
+#define wxEVT_HTML_LINK_CLICKED wxEVT_COMMAND_HTML_LINK_CLICKED
+#endif
+
+#endif
--- a/xs/xsp/GUI.xsp
+++ b/xs/xsp/GUI.xsp
@ -32,15 +32,26 @@ void set_main_frame(SV *ui)
 void set_tab_panel(SV *ui)
    %code%{ Slic3r::GUI::set_tab_panel((wxNotebook*)wxPli_sv_2_object(aTHX_ ui, "Wx::Notebook")); %};
    
-void add_debug_menu(SV *ui)
-    %code%{ Slic3r::GUI::add_debug_menu((wxMenuBar*)wxPli_sv_2_object(aTHX_ ui, "Wx::MenuBar")); %};
+void add_debug_menu(SV *ui, int event_language_change)
+    %code%{ Slic3r::GUI::add_debug_menu((wxMenuBar*)wxPli_sv_2_object(aTHX_ ui, "Wx::MenuBar"), event_language_change); %};

-void create_preset_tab(const char *name)
-    %code%{ Slic3r::GUI::create_preset_tab(name); %};
+void create_preset_tabs(PresetBundle *preset_bundle, AppConfig *app_config, 
+                        bool no_controller, bool is_disabled_button_browse, bool is_user_agent,
+                        int event_value_change, int event_presets_changed,
+                        int event_button_browse, int event_button_test)
+    %code%{ Slic3r::GUI::create_preset_tabs(preset_bundle, app_config, no_controller, 
+                                            is_disabled_button_browse, is_user_agent,
+                                            event_value_change, event_presets_changed, 
+                                            event_button_browse, event_button_test); %};
+
+Ref<TabIface> get_preset_tab(char *name)
+    %code%{ RETVAL=Slic3r::GUI::get_preset_tab_iface(name); %};
+
+bool load_language()
+    %code%{ RETVAL=Slic3r::GUI::load_language(); %};

 void create_combochecklist(SV *ui, std::string text, std::string items, bool initial_value)
    %code%{ Slic3r::GUI::create_combochecklist((wxComboCtrl*)wxPli_sv_2_object(aTHX_ ui, "Wx::ComboCtrl"), text, items, initial_value); %};
        
 int combochecklist_get_flags(SV *ui)
    %code%{ RETVAL=Slic3r::GUI::combochecklist_get_flags((wxComboCtrl*)wxPli_sv_2_object(aTHX_ ui, "Wx::ComboCtrl")); %};
-    
--- a/xs/xsp/GUI_Tab.xsp
+++ b/xs/xsp/GUI_Tab.xsp
@ -0,0 +1,23 @@
+%module{Slic3r::XS};
+
+%{
+#include <xsinit.h>
+#include "slic3r/GUI/TabIface.hpp"
+%}
+
+%name{Slic3r::GUI::Tab2} class TabIface {
+    TabIface();
+    ~TabIface();
+    void		load_current_preset();
+    void		update_tab_ui();
+    void		update_ui_from_settings();
+    void		select_preset(char* name);
+	void		load_config(DynamicPrintConfig* config);
+	bool		current_preset_is_dirty();
+	void		load_key_value(char* opt_key, char* value);
+	void		OnActivate();
+	std::string	title();
+	Ref<DynamicPrintConfig>		get_config();
+	Ref<PresetCollection>		get_presets();
+	std::vector<std::string>	get_dependent_tabs();
+};
--- a/xs/xsp/XS.xsp
+++ b/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:
--- a/xs/xsp/my.map
+++ b/xs/xsp/my.map
@ -233,6 +233,8 @@ PresetBundle*	    		O_OBJECT_SLIC3R
 Ref<PresetBundle>    		O_OBJECT_SLIC3R_T
 PresetHints*	    		O_OBJECT_SLIC3R
 Ref<PresetHints>    		O_OBJECT_SLIC3R_T
+TabIface*	   				O_OBJECT_SLIC3R
+Ref<TabIface> 				O_OBJECT_SLIC3R_T

 Axis                  T_UV
 ExtrusionLoopRole     T_UV
--- a/xs/xsp/typemap.xspt
+++ b/xs/xsp/typemap.xspt
@ -210,6 +210,8 @@
 %typemap{Ref<PresetBundle>}{simple};
 %typemap{PresetHints*};
 %typemap{Ref<PresetHints>}{simple};
+%typemap{TabIface*};
+%typemap{Ref<TabIface>}{simple};

 %typemap{PrintRegionPtrs*};
 %typemap{PrintObjectPtrs*};