Fix serveral issues on Linux environments

1. fix the crash issue in ComboBox
2. fix the network agent directory not correct issue
3. fix the first 3d tab switch failed issue
4. fix the filemenu not correct issue

Change-Id: I6a99218c0f7edbd57114ca1d9ff8c5c020d26d94
(cherry picked from commit b5e1b06af42aea9d1413be29dd58150b2ac8d470)

src/slic3r/GUI/GUI_App.cpp

@@ -2228,11 +2228,11 @@ bool GUI_App::on_init_inner()
 
         // An ugly solution to GH #5537 in which GUI_App::init_opengl (normally called from events wxEVT_PAINT
         // and wxEVT_SET_FOCUS before GUI_App::post_init is called) wasn't called before GUI_App::post_init and OpenGL wasn't initialized.
-#ifdef __linux__
-        if (!m_post_initialized && m_opengl_initialized) {
-#else
+//#ifdef __linux__
+//        if (!m_post_initialized && m_opengl_initialized) {
+//#else
         if (!m_post_initialized) {
-#endif
+//#endif
             m_post_initialized = true;
 #ifdef WIN32
             this->mainframe->register_win32_callbacks();

src/slic3r/GUI/MainFrame.cpp

@@ -139,7 +139,7 @@ static wxIcon main_frame_icon(GUI_App::EAppMode app_mode)
 }
 
 // BBS
-#ifdef __WINDOWS__
+#ifndef __APPLE__
 #define BORDERLESS_FRAME_STYLE (wxRESIZE_BORDER | wxMINIMIZE_BOX | wxMAXIMIZE_BOX | wxCLOSE_BOX)
 #else
 #define BORDERLESS_FRAME_STYLE (wxMINIMIZE_BOX | wxMAXIMIZE_BOX | wxCLOSE_BOX)
@@ -178,7 +178,7 @@ DPIFrame(NULL, wxID_ANY, "", wxDefaultPosition, wxDefaultSize, BORDERLESS_FRAME_
     // Fonts were created by the DPIFrame constructor for the monitor, on which the window opened.
     wxGetApp().update_fonts(this);
 
-#ifdef __WINDOWS__
+#ifndef __APPLE__
     m_topbar         = new BBLTopbar(this);
 #else
     auto panel_topbar = new wxPanel(this, wxID_ANY);
@@ -284,7 +284,7 @@ DPIFrame(NULL, wxID_ANY, "", wxDefaultPosition, wxDefaultSize, BORDERLESS_FRAME_
     //Bind(wxEVT_MENU, [this](wxCommandEvent&) { m_plater->cut_selection_to_clipboard(); }, wxID_HIGHEST + wxID_CUT);
     Bind(wxEVT_SIZE, [this](wxSizeEvent&) {
             BOOST_LOG_TRIVIAL(trace) << "mainframe: size changed, is maximized = " << this->IsMaximized();
-#ifdef __WINDOWS__
+#ifndef __APPLE__
             if (this->IsMaximized()) {
                 m_topbar->SetWindowSize();
             } else {
@@ -326,7 +326,7 @@ DPIFrame(NULL, wxID_ANY, "", wxDefaultPosition, wxDefaultSize, BORDERLESS_FRAME_
     // initialize layout
     m_main_sizer = new wxBoxSizer(wxVERTICAL);
     wxSizer* sizer = new wxBoxSizer(wxVERTICAL);
-#ifdef __WINDOWS__
+#ifndef __APPLE__
      sizer->Add(m_topbar, 0, wxEXPAND);
 #else
      sizer->Add(panel_topbar, 0, wxEXPAND);
@@ -854,7 +854,7 @@ void MainFrame::init_tabpanel()
             //monitor
         }
 
-#ifdef __WINDOWS__
+#ifndef __APPLE__
         if (sel == tp3DEditor) {
             m_topbar->EnableUndoRedoItems();
         }
@@ -1507,7 +1507,7 @@ void MainFrame::on_dpi_changed(const wxRect& suggested_rect)
         dynamic_cast<Notebook*>(m_tabpanel)->Rescale();
 #endif
 
-#ifdef __WINDOWS__
+#ifndef __APPLE__
     // BBS
     m_topbar->Rescale();
 #endif
@@ -1630,7 +1630,7 @@ static wxMenu* generate_help_menu()
             return true;
         });
     // About
-#ifdef __WINDOWS__
+#ifndef __APPLE__
     wxString about_title = wxString::Format(_L("&About %s"), SLIC3R_APP_FULL_NAME);
     append_menu_item(helpMenu, wxID_ANY, about_title, about_title,
             [](wxCommandEvent&) { Slic3r::GUI::about(); });
@@ -1691,7 +1691,7 @@ void MainFrame::init_menubar_as_editor()
             [this](){return can_start_new_project(); }, this);
         // Open Project
 
-#ifdef __WINDOWS__
+#ifndef __APPLE__
         append_menu_item(fileMenu, wxID_ANY, _L("Open Project") + dots + "\tCtrl+O", _L("Open a project file"),
             [this](wxCommandEvent&) { if (m_plater) m_plater->load_project(); }, "menu_open", nullptr,
             [this](){return can_open_project(); }, this);
@@ -1722,7 +1722,7 @@ void MainFrame::init_menubar_as_editor()
         Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt) { evt.Enable(can_open_project() && (m_recent_projects.GetCount() > 0)); }, recent_projects_submenu->GetId());
 
         // BBS: close save project
-#ifdef __WINDOWS__
+#ifndef __APPLE__
         append_menu_item(fileMenu, wxID_ANY, _L("Save Project") + "\tCtrl+S", _L("Save current project to file"),
             [this](wxCommandEvent&) { if (m_plater) m_plater->save_project(); }, "menu_save", nullptr,
             [this](){return m_plater != nullptr && can_save(); }, this);
@@ -1733,7 +1733,7 @@ void MainFrame::init_menubar_as_editor()
 #endif
 
 
-#ifdef __WINDOWS__
+#ifndef __APPLE__
         append_menu_item(fileMenu, wxID_ANY, _L("Save Project as") + dots + "\tCtrl+Shift+S", _L("Save current project as"),
             [this](wxCommandEvent&) { if (m_plater) m_plater->save_project(true); }, "menu_save", nullptr,
             [this](){return m_plater != nullptr && can_save_as(); }, this);
@@ -1748,7 +1748,7 @@ void MainFrame::init_menubar_as_editor()
 
         // BBS
         wxMenu *import_menu = new wxMenu();
-#ifdef __WINDOWS__
+#ifndef __APPLE__
         append_menu_item(import_menu, wxID_ANY, _L("Import 3MF/STL/STEP/OBJ/AMF") + dots + "\tCtrl+I", _L("Load a model"),
             [this](wxCommandEvent&) { if (m_plater) {
             m_plater->add_model();
@@ -1791,7 +1791,7 @@ void MainFrame::init_menubar_as_editor()
 
         fileMenu->AppendSeparator();
 
-#ifdef __WINDOWS__
+#ifndef __APPLE__
         append_menu_item(fileMenu, wxID_EXIT, _L("Quit"), wxString::Format(_L("Quit")),
             [this](wxCommandEvent&) { Close(false); }, "menu_exit", nullptr);
 #else
@@ -1812,7 +1812,7 @@ void MainFrame::init_menubar_as_editor()
         wxString hotkey_delete = "Del";
     #endif
 
-#ifdef __WINDOWS__
+#ifndef __APPLE__
         // BBS undo
         append_menu_item(editMenu, wxID_ANY, _L("Undo") + "\tCtrl+Z",
             _L("Undo"), [this](wxCommandEvent&) { m_plater->undo(); },
@@ -2086,7 +2086,7 @@ void MainFrame::init_menubar_as_editor()
     auto helpMenu = generate_help_menu();
 
         
-#ifdef __WINDOWS__
+#ifndef __APPLE__
     m_topbar->SetFileMenu(fileMenu);
     if (editMenu)
         m_topbar->AddDropDownSubMenu(editMenu, _L("Edit"));

src/slic3r/GUI/Widgets/ComboBox.cpp

@@ -120,7 +120,7 @@ wxString ComboBox::GetTextLabel() const
 
 bool ComboBox::SetFont(wxFont const& font)
 {
-    if (GetTextCtrl()->IsShown())
+    if (GetTextCtrl() && GetTextCtrl()->IsShown())
         return GetTextCtrl()->SetFont(font);
     else
         return TextInput::SetFont(font);

src/slic3r/Utils/NetworkAgent.cpp

@@ -111,7 +111,9 @@ int NetworkAgent::initialize_network_module(bool using_backup)
 {
     //int ret = -1;
     std::string library;
-    auto plugin_folder = boost::filesystem::path(wxStandardPaths::Get().GetUserDataDir().ToUTF8().data()) / "plugins";
+    std::string data_dir_str = data_dir();
+    boost::filesystem::path data_dir_path(data_dir_str);
+    auto plugin_folder = data_dir_path / "plugins";
 
     if (using_backup) {
         plugin_folder = plugin_folder/"backup";
@@ -323,7 +325,9 @@ void* NetworkAgent::get_bambu_source_entry()
 
     //int ret = -1;
     std::string library;
-    auto plugin_folder = boost::filesystem::path(wxStandardPaths::Get().GetUserDataDir().ToUTF8().data()) / "plugins";
+    std::string data_dir_str = data_dir();
+    boost::filesystem::path data_dir_path(data_dir_str);
+    auto plugin_folder = data_dir_path / "plugins";
 #if defined(_MSC_VER) || defined(_WIN32)
     wchar_t lib_wstr[128];