Add Reload Presets button and menu item (Cmd+R)

Features:
- Reload button (refresh icon) next to preset dropdown on all tabs
- File > Reload Presets menu item with Cmd+R shortcut
- Reloads user presets from disk without app restart
- Auto-selects newly found presets after reload
- Properly updates all tab UI including delete button visibility

Also:
- Custom monochrome reload_preset.svg icon matching save/cross style
- cmake 4.x compatibility fix for dependency builds

Author: adele-with-a-b

deps/CMakeLists.txt

@@ -133,6 +133,7 @@ function(bambustudio_add_cmake_project projectname)
             -DCMAKE_C_COMPILER:STRING=${CMAKE_C_COMPILER}
             -DCMAKE_CXX_COMPILER:STRING=${CMAKE_CXX_COMPILER}
             -DCMAKE_TOOLCHAIN_FILE:STRING=${CMAKE_TOOLCHAIN_FILE}
+            -DCMAKE_POLICY_VERSION_MINIMUM=3.5
             -DBUILD_SHARED_LIBS:BOOL=OFF
             ${_cmake_osx_arch}
             "${_configs_line}"

resources/images/reload_preset.svg

@@ -5686,6 +5686,48 @@ void GUI_App::reload_settings()
     }
 }
 
+// Reload user presets from disk without restart
+void GUI_App::reload_user_presets_from_disk()
+{
+    if (!preset_bundle || !mainframe)
+        return;
+
+    std::string user_id = (m_agent && m_agent->is_user_login())
+        ? m_agent->get_user_id()
+        : DEFAULT_USER_FOLDER_NAME;
+
+    // Snapshot existing preset names before reload
+    std::set<std::string> old_prints, old_filaments;
+    for (const auto& p : preset_bundle->prints)
+        if (p.is_user()) old_prints.insert(p.name);
+    for (const auto& p : preset_bundle->filaments)
+        if (p.is_user()) old_filaments.insert(p.name);
+
+    BOOST_LOG_TRIVIAL(info) << "Reloading user presets from disk for user: " << user_id;
+    preset_bundle->load_user_presets(user_id, ForwardCompatibilitySubstitutionRule::Enable);
+    mainframe->update_side_preset_ui();
+
+    // Find new presets and select the last one found
+    std::string new_print, new_filament;
+    for (const auto& p : preset_bundle->prints)
+        if (p.is_user() && old_prints.find(p.name) == old_prints.end())
+            new_print = p.name;
+    for (const auto& p : preset_bundle->filaments)
+        if (p.is_user() && old_filaments.find(p.name) == old_filaments.end())
+            new_filament = p.name;
+
+    if (!new_print.empty()) {
+        BOOST_LOG_TRIVIAL(info) << "New process preset found, selecting: " << new_print;
+        auto tab = get_tab(Preset::TYPE_PRINT);
+        if (tab) tab->select_preset(new_print);
+    }
+    if (!new_filament.empty()) {
+        BOOST_LOG_TRIVIAL(info) << "New filament preset found, selecting: " << new_filament;
+        auto tab = get_tab(Preset::TYPE_FILAMENT);
+        if (tab) tab->select_preset(new_filament);
+    }
+}
+
 //BBS reload when logout
 void GUI_App::remove_user_presets()
 {

src/slic3r/GUI/GUI_App.cpp

@@ -336,6 +336,7 @@ class GUI_App : public wxApp
 
     boost::thread    m_sync_update_thread;
     std::shared_ptr<int> m_user_sync_token;
+
     bool             m_is_dark_mode{ false };
     bool             m_adding_script_handler { false };
     bool             m_side_popup_status{false};
@@ -350,6 +351,9 @@ class GUI_App : public wxApp
 public:
     //try again when subscription fails
     void            on_start_subscribe_again(std::string dev_id);
+
+    // Reload user presets from disk (triggered via menu: File > Reload Presets)
+    void            reload_user_presets_from_disk();
     std::string     get_local_models_path();
     bool            OnInit() override;
     int             OnExit() override;

src/slic3r/GUI/GUI_App.hpp

@@ -2658,6 +2658,11 @@ void MainFrame::init_menubar_as_editor()
         append_menu_item(fileMenu, wxID_ANY, _L("Save Project") + "\t" + ctrl + "S", _L("Save current project to file"),
             [this](wxCommandEvent&) { if (m_plater) m_plater->save_project(); }, "", nullptr,
             [this](){return m_plater != nullptr && can_save(); }, this);
+
+        // Reload user presets from disk
+        append_menu_item(fileMenu, wxID_ANY, _L("Reload Presets") + "\t" + ctrl + "R", _L("Reload user presets from disk"),
+            [](wxCommandEvent&) { wxGetApp().reload_user_presets_from_disk(); }, "", nullptr,
+            []() { return true; }, this);
 #endif
 
 

src/slic3r/GUI/MainFrame.cpp

@@ -234,6 +234,7 @@ void Tab::create_preset_tab()
     });
 
     //add_scaled_button(panel, &m_btn_compare_preset, "compare");
+    add_scaled_button(m_top_panel, &m_btn_reload_presets, "reload_preset");
     add_scaled_button(m_top_panel, &m_btn_save_preset, "save");
     add_scaled_button(m_top_panel, &m_btn_delete_preset, "cross");
     //if (m_type == Preset::Type::TYPE_PRINTER)
@@ -372,6 +373,7 @@ void Tab::create_preset_tab()
     m_top_sizer->Add( m_undo_to_sys_btn, 0, wxALIGN_CENTER_VERTICAL);
     m_top_sizer->AddSpacer(8);
 #endif
+    m_top_sizer->Add( m_btn_reload_presets, 0, wxALIGN_CENTER_VERTICAL | wxLEFT, FromDIP(12));
     m_top_sizer->Add( m_btn_save_preset, 0, wxALIGN_CENTER_VERTICAL | wxLEFT, FromDIP(12));
     m_top_sizer->Add( m_btn_delete_preset, 0, wxALIGN_CENTER_VERTICAL | wxLEFT, FromDIP(12) );
     m_top_sizer->Add( m_btn_search, 0, wxALIGN_CENTER_VERTICAL | wxLEFT , FromDIP(12) );
@@ -610,6 +612,8 @@ void Tab::create_preset_tab()
 
     //m_btn_compare_preset->Bind(wxEVT_BUTTON, ([this](wxCommandEvent e) { compare_preset(); }));
     m_btn_save_preset->Bind(wxEVT_BUTTON, ([this](wxCommandEvent e) { save_preset(); }));
+    m_btn_reload_presets->Bind(wxEVT_BUTTON, ([this](wxCommandEvent e) { wxGetApp().reload_user_presets_from_disk(); }));
+    m_btn_reload_presets->SetToolTip(_L("Reload presets from disk"));
     m_btn_delete_preset->Bind(wxEVT_BUTTON, ([this](wxCommandEvent e) { delete_preset(); }));
     /*m_btn_hide_incompatible_presets->Bind(wxEVT_BUTTON, ([this](wxCommandEvent e) {
         toggle_show_hide_incompatible();

src/slic3r/GUI/Tab.cpp

@@ -156,6 +156,7 @@ class Tab: public wxPanel
 
 	ScalableButton*		m_btn_compare_preset;
 	ScalableButton*		m_btn_save_preset;
+	ScalableButton*		m_btn_reload_presets;
 	ScalableButton*		m_btn_delete_preset;
 	//ScalableButton*		m_btn_edit_ph_printer {nullptr};
 	//ScalableButton*		m_btn_hide_incompatible_presets;