Fixed crash from start if SLA preset is selected.

Fixed extruder selection from ObjectList under OSX

src/slic3r/GUI/GUI_ObjectList.cpp

@@ -895,12 +895,6 @@ void ObjectList::extruder_editing()
     if (!item || !(m_objects_model->GetItemType(item) & (itVolume | itObject)))
         return;
 
-    // ! #ys Use ApplyExtruderSelector instead this code
-    /*
-    std::vector<wxBitmap*> icons = get_extruder_color_icons();
-    if (icons.empty())
-        return;
-    */
     const int column_width = GetColumn(colExtruder)->GetWidth() + wxSystemSettings::GetMetric(wxSYS_VSCROLL_X) + 5;
 
     wxPoint pos = get_mouse_position_in_control();
@@ -910,32 +904,8 @@ void ObjectList::extruder_editing()
 
     apply_extruder_selector(&m_extruder_editor, this, L("default"), pos, size);
 
-    // ! #ys Use ApplyExtruderSelector instead this code
-    /*
-    if (!m_extruder_editor)
-        m_extruder_editor = new wxBitmapComboBox(this, wxID_ANY, wxEmptyString, pos, size,
-                                                 0, nullptr, wxCB_READONLY);
-    else
-    {
-        m_extruder_editor->SetPosition(pos);
-        m_extruder_editor->SetMinSize(size);
-        m_extruder_editor->SetSize(size);
-        m_extruder_editor->Clear();
-        m_extruder_editor->Show();
-    }
-
-    int i = 0;
-    for (wxBitmap* bmp : icons) {
-        if (i == 0) {
-            m_extruder_editor->Append(_(L("default")), *bmp);
-            ++i;
-        }
-
-        m_extruder_editor->Append(wxString::Format("%d", i), *bmp);
-        ++i;
-    }
-    */
     m_extruder_editor->SetSelection(m_objects_model->GetExtruderNumber(item));
+    m_extruder_editor->Show();
 
     auto set_extruder = [this]()
     {

src/slic3r/GUI/GUI_Preview.cpp

@@ -619,6 +619,8 @@ void Preview::update_extruder_selector()
 void Preview::create_double_slider()
 {
     m_slider = new DoubleSlider(this, wxID_ANY, 0, 0, 0, 100);
+    m_slider->EnableTickManipulation(wxGetApp().preset_bundle->printers.get_edited_preset().printer_technology() == ptFFF);
+
     // #ys_FIXME_COLOR
     // m_double_slider_sizer->Add(m_slider, 0, wxEXPAND, 0);
 

src/slic3r/GUI/wxExtensions.cpp

@@ -505,8 +505,6 @@ void apply_extruder_selector(wxBitmapComboBox** ctrl,
                              bool use_thin_icon/* = false*/)
 {
     std::vector<wxBitmap*> icons = get_extruder_color_icons(use_thin_icon);
-    if (icons.empty())
-        return;
 
     if (!*ctrl)
         *ctrl = new wxBitmapComboBox(parent, wxID_ANY, wxEmptyString, pos, size,
@@ -519,6 +517,14 @@ void apply_extruder_selector(wxBitmapComboBox** ctrl,
         (*ctrl)->Clear();
     }
 
+    if (icons.empty() && !first_item.empty()) {
+        (*ctrl)->Append(_(first_item), wxNullBitmap);
+        return;
+    }
+
+    // For ObjectList we use short extruder name (just a number)
+    const bool use_full_item_name = dynamic_cast<Slic3r::GUI::ObjectList*>(parent) == nullptr;
+
     int i = 0;
     wxString str = _(L("Extruder"));
     for (wxBitmap* bmp : icons) {
@@ -528,7 +534,7 @@ void apply_extruder_selector(wxBitmapComboBox** ctrl,
             ++i;
         }
 
-        (*ctrl)->Append(wxString::Format("%s %d", str, i), *bmp);
+        (*ctrl)->Append(use_full_item_name ? wxString::Format("%s %d", str, i) : std::to_string(i), *bmp);
         ++i;
     }
     (*ctrl)->SetSelection(0);