Separate actual style from styles

(save button will save only actual style no others)

src/slic3r/GUI/Gizmos/GLGizmoEmboss.hpp

@@ -32,6 +32,7 @@ namespace Slic3r{
 
 namespace Slic3r::GUI {
 class MeshRaycaster;
+struct EmbossDataBase;
 
 class GLGizmoEmboss : public GLGizmoBase
 {
@@ -121,18 +122,18 @@ private:
     /// TODO: make more general, static and move to ImGuiWrapper 
     /// </summary>
     /// <returns>True when value changed otherwise FALSE.</returns>
-    bool rev_input(const std::string &name, float &value, float *default_value, 
+    bool rev_input(const std::string &name, float &value, const float *default_value, 
         const std::string &undo_tooltip, float step, float step_fast, const char *format, 
         ImGuiInputTextFlags flags = 0);
-    bool rev_checkbox(const std::string &name, bool &value, bool* default_value, const std::string  &undo_tooltip);
+    bool rev_checkbox(const std::string &name, bool &value, const bool* default_value, const std::string  &undo_tooltip);
-    bool rev_slider(const std::string &name, std::optional<int>& value, std::optional<int> *default_value,
+    bool rev_slider(const std::string &name, std::optional<int>& value, const std::optional<int> *default_value,
         const std::string &undo_tooltip, int v_min, int v_max, const std::string &format, const wxString &tooltip);
-    bool rev_slider(const std::string &name, std::optional<float>& value, std::optional<float> *default_value,
+    bool rev_slider(const std::string &name, std::optional<float>& value, const std::optional<float> *default_value,
         const std::string &undo_tooltip, float v_min, float v_max, const std::string &format, const wxString &tooltip);
-    bool rev_slider(const std::string &name, float &value, float *default_value, 
+    bool rev_slider(const std::string &name, float &value, const float *default_value, 
         const std::string &undo_tooltip, float v_min, float v_max, const std::string &format, const wxString &tooltip);
     template<typename T, typename Draw>
-    bool revertible(const std::string &name, T &value, T *default_value, const std::string &undo_tooltip, float undo_offset, Draw draw);
+    bool revertible(const std::string &name, T &value, const T *default_value, const std::string &undo_tooltip, float undo_offset, Draw draw);
 
     void set_minimal_window_size(bool is_advance_edit_style);
     const ImVec2 &get_minimal_window_size() const;
@@ -145,8 +146,8 @@ private:
     bool choose_true_type_file();
     bool choose_svg_file();
 
-    // Create object described how to make a Volume
+    // prepare base data for emboss text
-    TextConfiguration create_configuration();
+    EmbossDataBase create_emboss_data_base();
     bool load_configuration(ModelVolume *volume);
 
     // Create notification when unknown font type is used
@@ -154,8 +155,6 @@ private:
     void create_notification_not_valid_font(const TextConfiguration& tc);
     void remove_notification_not_valid_font();
 
-    std::string create_volume_name();
-
     // This configs holds GUI layout size given by translated texts.
     // etc. When language changes, GUI is recreated and this class constructed again,
     // so the change takes effect. (info by GLGizmoFdmSupports.hpp)
@@ -212,7 +211,7 @@ private:
     std::optional<ImVec2> m_set_window_offset;
     bool m_is_advanced_edit_style = false;
 
-    FontManager m_font_manager;
+    FontManager m_style_manager;
 
     // Keep sorted list of loadable face names
     struct Facenames
@@ -227,15 +226,12 @@ private:
         std::vector<bool> exist_textures = {};
     } m_face_names;
 
-    // Track stored values in AppConfig
-    std::optional<FontItem> m_stored_font_item;
-    std::optional<wxFont> m_stored_wx_font; // cache for stored wx font to not create every frame
-    std::map<std::string, FontItem> m_stored_font_items;
-    void fill_stored_font_items();
-    void select_stored_font_item();
-
     // Text to emboss
     std::string m_text;
+
+    // actual volume
+    ModelVolume *m_volume;
+
     // True when m_text contain character unknown by selected font
     bool m_text_contain_unknown_glyph = false;
 
@@ -245,9 +241,6 @@ private:
     // cancel for rendering font name
     bool m_allow_update_rendered_font;
 
-    // actual volume
-    ModelVolume *m_volume; 
-
     // Rotation gizmo
     GLGizmoRotate m_rotate_gizmo;
 
@@ -290,11 +283,6 @@ private:
     bool draw_clickable(IconType icon, IconState state, IconType hover_icon, IconState hover_state);
     bool draw_button(IconType icon, bool disable = false);
 
-    // load / store appConfig
-    static FontList load_font_list_from_app_config(const AppConfig *cfg, size_t &activ_font_index);
-    void store_font_list_to_app_config();
-    //void store_font_item_to_app_config() const;
-
     // only temporary solution
     static const std::string M_ICON_FILENAME;
 

src/slic3r/Utils/FontListSerializable.cpp

@@ -19,6 +19,8 @@ const std::string FontListSerializable::APP_CONFIG_FONT_COLLECTION  = "collectio
 const std::string FontListSerializable::APP_CONFIG_FONT_CHAR_GAP    = "char_gap";
 const std::string FontListSerializable::APP_CONFIG_FONT_LINE_GAP    = "line_gap";
 
+const std::string FontListSerializable::APP_CONFIG_ACTIVE_FONT      = "activ_font";
+
 std::string FontListSerializable::create_section_name(unsigned index)
 {
     return AppConfig::SECTION_FONT + ':' + std::to_string(index);
@@ -142,4 +144,60 @@ void FontListSerializable::store_font_item(AppConfig &     cfg,
         cfg.set(section_name, APP_CONFIG_FONT_CHAR_GAP, std::to_string(*fp.char_gap));
     if (fp.line_gap.has_value())
         cfg.set(section_name, APP_CONFIG_FONT_LINE_GAP, std::to_string(*fp.line_gap));
+}
+
+void FontListSerializable::store_font_index(AppConfig &cfg, unsigned index) {
+    // store actual font index
+    cfg.clear_section(AppConfig::SECTION_FONT);
+    // activ font first index is +1 to correspond with section name
+    std::string activ_font = std::to_string(index);
+    cfg.set(AppConfig::SECTION_FONT, APP_CONFIG_ACTIVE_FONT, activ_font);
+}
+
+std::optional<size_t> FontListSerializable::load_font_index(const AppConfig &cfg)
+{
+    if (!cfg.has_section(AppConfig::SECTION_FONT)) return {};
+
+    auto section = cfg.get_section(AppConfig::SECTION_FONT);
+    auto it      = section.find(APP_CONFIG_ACTIVE_FONT);
+    if (it == section.end()) return {};
+
+    size_t active_font = static_cast<size_t>(std::atoi(it->second.c_str()));
+    // order in config starts with number 1
+    return active_font - 1;
+}
+
+FontList FontListSerializable::load_font_list(const AppConfig &cfg)
+{
+    FontList result;
+    // human readable index inside of config starts from 1 !!
+    unsigned    index        = 1;
+    std::string section_name = create_section_name(
+        index);
+    while (cfg.has_section(section_name)) {
+        std::optional<FontItem> fi = load_font_item(cfg.get_section(section_name));
+        if (fi.has_value()) result.emplace_back(*fi);
+        section_name = create_section_name(++index);
+    }
+    return result;
+}
+
+void FontListSerializable::store_font_list(AppConfig &cfg, const FontList font_list)
+{
+    // store styles
+    unsigned index = 1;
+    for (const FontItem &fi : font_list) {
+        // skip file paths + fonts from other OS(loaded from .3mf)
+        assert(fi.type == WxFontUtils::get_actual_type());
+        // if (fi.type != WxFontUtils::get_actual_type()) continue;
+        store_font_item(cfg, fi, index++);
+    }
+
+    // remove rest of font sections (after deletation)
+    std::string section_name = create_section_name(index);
+    while (cfg.has_section(section_name)) {
+        cfg.clear_section(section_name);
+        section_name = create_section_name(++index);
+    }
+    cfg.save();
 }

src/slic3r/Utils/FontListSerializable.hpp

@@ -29,14 +29,22 @@ class FontListSerializable
     static const std::string APP_CONFIG_FONT_COLLECTION;
     static const std::string APP_CONFIG_FONT_CHAR_GAP;
     static const std::string APP_CONFIG_FONT_LINE_GAP;
+
+    static const std::string APP_CONFIG_ACTIVE_FONT;
 public:
     FontListSerializable() = delete;
 
+    static void store_font_index(AppConfig &cfg, unsigned index);
+    static std::optional<size_t> load_font_index(const AppConfig &cfg);
+
+    static FontList load_font_list(const AppConfig &cfg);
+    static void     store_font_list(AppConfig &cfg, const FontList font_list);
+
+private:
     static std::string create_section_name(unsigned index);
     static std::optional<FontItem> load_font_item(const std::map<std::string, std::string> &app_cfg_section);
     static void store_font_item(AppConfig &cfg, const FontItem &fi, unsigned index);
 
-private:
     // TODO: move to app config like read from section
     static bool read(const std::map<std::string, std::string>& section, const std::string& key, bool& value);
     static bool read(const std::map<std::string, std::string>& section, const std::string& key, float& value);

src/slic3r/Utils/FontManager.cpp

@@ -9,62 +9,103 @@
 #include "slic3r/GUI/Jobs/CreateFontStyleImagesJob.hpp"
 #include "slic3r/GUI/ImGuiWrapper.hpp" // check of font ranges
 
+#include "slic3r/Utils/FontListSerializable.hpp"
+
 using namespace Slic3r;
 using namespace Slic3r::GUI;
 
 FontManager::FontManager(const ImWchar *language_glyph_range)
     : m_imgui_init_glyph_range(language_glyph_range)
-    , m_font_selected(std::numeric_limits<size_t>::max())
     , m_exist_style_images(false)
     , m_temp_style_images(nullptr)
 {}
 
 FontManager::~FontManager() { 
-    free_imgui_fonts();
+    clear_imgui_font();
     free_style_images();
 }
 
+void FontManager::init(const AppConfig *cfg, const FontList &default_font_list)
+{
+    FontList font_list = (cfg != nullptr) ?
+        FontListSerializable::load_font_list(*cfg) :
+        default_font_list;
+    if (font_list.empty()) font_list = default_font_list;
+    for (FontItem &fi : font_list) {
+        make_unique_name(fi.name);
+        m_font_list.push_back({fi});
+    }
+
+    std::optional<size_t> activ_index_opt = (cfg != nullptr) ? 
+        FontListSerializable::load_font_index(*cfg) : 
+        std::optional<size_t>{};
+    size_t activ_index = activ_index_opt.has_value() ? *activ_index_opt : 0;
+    if (activ_index >= m_font_list.size()) activ_index = 0;
+    
+    // find valid font item
+    if (!load_font(activ_index)) {
+        m_font_list.erase(m_font_list.begin() + activ_index);
+        activ_index = 0;
+        while (m_font_list.empty() || !load_font(activ_index))
+            m_font_list.erase(m_font_list.begin());
+        // no one style from config is loadable
+        if (m_font_list.empty()) {
+            // set up default font list
+            for (FontItem fi : default_font_list) {
+                make_unique_name(fi.name);
+                m_font_list.push_back({std::move(fi)});
+            }
+            // try to load first default font
+            bool loaded = load_font(activ_index);
+            assert(loaded);
+        }
+    }
+}
+
+bool FontManager::store_font_list_to_app_config(AppConfig *cfg)
+{
+    assert(cfg != nullptr);
+    if (cfg == nullptr) return false;
+    if (exist_stored_style()) {
+        // update stored item
+        m_font_list[m_style_cache.font_index].font_item = m_style_cache.font_item;
+    } else {
+        // add new into stored list
+        FontItem &fi = m_style_cache.font_item;
+        make_unique_name(fi.name);        
+        m_style_cache.font_index = m_font_list.size();
+        m_font_list.push_back({fi});
+    }
+    
+    FontListSerializable::store_font_index(*cfg, m_style_cache.font_index);
+    FontList font_list;
+    font_list.reserve(m_font_list.size());
+    for (const Item &item : m_font_list) font_list.push_back(item.font_item);
+    FontListSerializable::store_font_list(*cfg, font_list);
+    return true;
+}
+
 void FontManager::swap(size_t i1, size_t i2) {
     if (i1 >= m_font_list.size() || 
         i2 >= m_font_list.size()) return;
     std::swap(m_font_list[i1], m_font_list[i2]);
 
     // fix selected index
-    if (!is_activ_font()) return;
+    if (!exist_stored_style()) return;
-    if (m_font_selected == i1) {
+    if (m_style_cache.font_index == i1) {
-        m_font_selected = i2;
+        m_style_cache.font_index = i2;
-    } else if (m_font_selected == i2) {
+    } else if (m_style_cache.font_index == i2) {
-        m_font_selected = i1;
+        m_style_cache.font_index = i1;
     }
 }
 
-void FontManager::duplicate() { duplicate(m_font_selected); }
-void FontManager::duplicate(size_t index) {
-    if (index >= m_font_list.size()) return;
-    Item item = m_font_list[index]; // copy
-    make_unique_name(item.font_item.name);
-    item.truncated_name.clear();    
-
-    // take original font imgui pointer
-    //ImFont *imgui_font = get_imgui_font(index);
-    //if (imgui_font != nullptr)
-    //    m_font_list[index].imgui_font_index.reset();
-
-    m_font_list.insert(m_font_list.begin() + index, item);
-    // fix selected index
-    if (!is_activ_font()) return;
-    if (index < m_font_selected) ++m_font_selected;
-}
-
 void FontManager::erase(size_t index) {
     if (index >= m_font_list.size()) return;
-    //ImFont *imgui_font = get_imgui_font(index);
-    //if (imgui_font != nullptr)
-    //    IM_DELETE(imgui_font);
 
     // fix selected index
-    if (is_activ_font() && index < m_font_selected)
+    if (exist_stored_style() &&
-        --m_font_selected;
+        index < m_style_cache.font_index)
+        --m_style_cache.font_index;
 
     m_font_list.erase(m_font_list.begin() + index);
 }
@@ -79,9 +120,7 @@ bool FontManager::wx_font_changed(std::unique_ptr<Emboss::FontFile> font_file)
         font_file = WxFontUtils::create_font_file(*wx_font);
         if (font_file == nullptr) return false;
     }
-    m_font_list[m_font_selected].font_file_with_cache = 
+    m_style_cache.font_file = Emboss::FontFileWithCache(std::move(font_file));        
-        Emboss::FontFileWithCache(std::move(font_file));
-        
     auto &fi = get_font_item();
     fi.type  = WxFontUtils::get_actual_type();
     fi.path = WxFontUtils::store_wxFont(*wx_font);
@@ -93,38 +132,41 @@ bool FontManager::wx_font_changed(std::unique_ptr<Emboss::FontFile> font_file)
 bool FontManager::load_font(size_t font_index)
 {
     if (font_index >= m_font_list.size()) return false;
-    std::swap(font_index, m_font_selected);
+    if (!load_font(m_font_list[font_index].font_item)) return false;
-    bool is_loaded = load_active_font();
+    m_style_cache.font_index = font_index;
-    if (!is_loaded) std::swap(font_index, m_font_selected);
+    m_style_cache.stored_wx_font = m_style_cache.wx_font;
-    return is_loaded;
+    return true;
 }
 
-bool FontManager::load_font(size_t font_index, const wxFont &font)
+bool FontManager::load_font(const FontItem &fi) {
+    if (fi.type == FontItem::Type::file_path) {
+        std::unique_ptr<Emboss::FontFile> font_ptr =
+            Emboss::create_font_file(fi.path.c_str());
+        if (font_ptr == nullptr) return false;
+        m_style_cache.wx_font = {};
+        m_style_cache.font_file = 
+            Emboss::FontFileWithCache(std::move(font_ptr));
+        m_style_cache.font_item      = fi; // copy
+        m_style_cache.font_index     = std::numeric_limits<size_t>::max();
+        m_style_cache.stored_wx_font = {};
+        return true;
+    }
+    if (fi.type != WxFontUtils::get_actual_type()) return false;
+    std::optional<wxFont> wx_font_opt = WxFontUtils::load_wxFont(fi.path);
+    if (!wx_font_opt.has_value()) return false;
+    return load_font(fi, *wx_font_opt);
+}
+
+bool FontManager::load_font(const FontItem &fi, const wxFont &font)
 {
-    if (font_index >= m_font_list.size()) return false;
+    if (!set_wx_font(font)) return false;
-    std::swap(font_index, m_font_selected);
+    m_style_cache.font_item      = fi; // copy
-    bool is_loaded = set_wx_font(font);
+    m_style_cache.font_index     = std::numeric_limits<size_t>::max();
-    if (!is_loaded) std::swap(font_index, m_font_selected);
+    m_style_cache.stored_wx_font = {};
-    return is_loaded;
+    return true;
 }
 
-static std::string get_file_name(const std::string &file_path)
+bool FontManager::is_activ_font() { return m_style_cache.font_file.has_value(); }
-{
-    size_t pos_last_delimiter = file_path.find_last_of("/\\");
-    size_t pos_point          = file_path.find_last_of('.');
-    size_t offset             = pos_last_delimiter + 1;
-    size_t count              = pos_point - pos_last_delimiter - 1;
-    return file_path.substr(offset, count);
-}
-
-bool FontManager::load_active_font()
-{ 
-    return set_up_font_file(m_font_selected); 
-}
-
-bool FontManager::is_activ_font() {
-    return m_font_selected < m_font_list.size();
-}
 
 bool FontManager::load_first_valid_font() {
     while (!m_font_list.empty()) {
@@ -135,127 +177,47 @@ bool FontManager::load_first_valid_font() {
     return false;
 }
 
-void FontManager::add_font(FontItem font_item)
+const FontItem* FontManager::get_stored_font_item() const
-{ 
-    make_unique_name(font_item.name);
-    Item item;
-    item.font_item = font_item;
-    m_font_list.push_back(item); 
-}
-
-void FontManager::add_fonts(FontList font_list)
 {
-    for (const FontItem &fi : font_list) 
+    if (m_style_cache.font_index >= m_font_list.size()) return nullptr;
-        add_font(fi);
+    return &m_font_list[m_style_cache.font_index].font_item;
 }
 
-std::shared_ptr<const Emboss::FontFile> &FontManager::get_font_file()
+const std::optional<wxFont> &FontManager::get_stored_wx_font() const { return m_style_cache.stored_wx_font; }
-{
-    // TODO: fix not selected font
-    //if (!is_activ_font()) return nullptr;
-    return m_font_list[m_font_selected].font_file_with_cache.font_file;
-}
 
-const FontItem &FontManager::get_font_item() const
+const FontItem &FontManager::get_font_item() const { return m_style_cache.font_item; }
-{
+      FontItem &FontManager::get_font_item()       { return m_style_cache.font_item; }
-    // TODO: fix not selected font
+const FontProp &FontManager::get_font_prop() const { return get_font_item().prop; }
-    //if (!is_activ_font()) return nullptr;
+      FontProp &FontManager::get_font_prop()       { return get_font_item().prop; }
-    return m_font_list[m_font_selected].font_item;
+const std::optional<wxFont> &FontManager::get_wx_font() const { return m_style_cache.wx_font; }
-}
+      std::optional<wxFont> &FontManager::get_wx_font()       { return m_style_cache.wx_font; }
 
-FontItem &FontManager::get_font_item()
+bool FontManager::exist_stored_style() const { return m_style_cache.font_index != std::numeric_limits<size_t>::max(); }
-{
+size_t FontManager::get_style_index() const { return m_style_cache.font_index; }
-    // TODO: fix not selected font
+Emboss::FontFileWithCache &FontManager::get_font_file_with_cache() { return m_style_cache.font_file; }
-    //if (!is_activ_font()) return nullptr;
+std::string &FontManager::get_truncated_name() { return m_style_cache.truncated_name; }
-    return m_font_list[m_font_selected].font_item;
-}
-
-const FontProp &FontManager::get_font_prop() const
-{
-    // TODO: fix not selected font
-    //if (!is_activ_font()) return nullptr;
-    return m_font_list[m_font_selected].font_item.prop;
-}
-
-FontProp &FontManager::get_font_prop()
-{
-    // TODO: fix not selected font
-    return m_font_list[m_font_selected].font_item.prop;
-}
-
-std::optional<wxFont> &FontManager::get_wx_font()
-{
-    //if (!is_activ_font()) return {};
-    return m_font_list[m_font_selected].wx_font;
-
-    //std::optional<wxFont> &wx_font = m_font_list[m_font_selected].wx_font;
-    //if (wx_font.has_value()) return wx_font;
-
-    //const FontItem &fi = get_font_item();
-    //if (fi.type != WxFontUtils::get_actual_type()) return {};
-
-    //wx_font = WxFontUtils::load_wxFont(fi.path);
-    //return wx_font;
-}
-
-bool FontManager::set_wx_font(const wxFont &wx_font) { 
-    return set_wx_font(m_font_selected, wx_font);
-}
-
-std::string &FontManager::get_truncated_name()
-{
-    return m_font_list[m_font_selected].truncated_name;
-}
-
-const std::optional<wxFont> &FontManager::get_wx_font() const
-{
-    return m_font_list[m_font_selected].wx_font;
-}
 
 void FontManager::clear_glyphs_cache()
 {
-    if (!is_activ_font()) return;
+    Emboss::FontFileWithCache &ff = m_style_cache.font_file;
-    Emboss::FontFileWithCache &ff = m_font_list[m_font_selected].font_file_with_cache;
     if (!ff.has_value()) return;
     ff.cache = std::make_shared<Emboss::Glyphs>();
 }
 
-void FontManager::clear_imgui_font() { 
+void FontManager::clear_imgui_font() { m_style_cache.atlas.Clear(); }
-    // TODO: improove to clear only actual font
-    if (!is_activ_font()) return;
-    free_imgui_fonts();
-    return;  
-
-    ImFont *imgui_font = get_imgui_font(m_font_selected);
-    m_font_list[m_font_selected].imgui_font_index.reset();
-    if (imgui_font != nullptr) IM_DELETE(imgui_font);
-}
 
 ImFont *FontManager::get_imgui_font()
-{
-    return get_imgui_font(m_font_selected);
-}
-
-ImFont *FontManager::create_imgui_font(const std::string &text)
-{
-    return create_imgui_font(m_font_selected, text);
-}
-
-ImFont *FontManager::get_imgui_font(size_t item_index)
 {
     if (!is_activ_font()) return nullptr;
-    Item &item = m_font_list[item_index];
+    
-    // check is already loaded
+    ImVector<ImFont *> &fonts = m_style_cache.atlas.Fonts;
-    if (!item.imgui_font_index.has_value()) return nullptr;
+    if (fonts.empty()) return nullptr;
-
-    size_t              index = *item.imgui_font_index;
-    ImVector<ImFont *> &fonts = m_imgui_font_atlas.Fonts;
 
     // check correct index
     int f_size = fonts.size();
-    assert(f_size > 0 && index < (size_t) f_size);
+    assert(f_size == 1);
-    if (f_size <= 0 || index >= (size_t) f_size) return nullptr;
+    if (f_size != 1) return nullptr;
-    ImFont *font = fonts[index];
+    ImFont *font = fonts.front();
     if (font == nullptr) return nullptr;
     if (!font->IsLoaded()) return nullptr;
     if (font->Scale <= 0.f) return nullptr;
@@ -264,25 +226,13 @@ ImFont *FontManager::get_imgui_font(size_t item_index)
     return font;
 }
 
-void FontManager::free_except_active_font() { 
+const std::vector<FontManager::Item> &FontManager::get_styles() const{ return m_font_list; }
-    free_imgui_fonts();
 
-    // free font_files
+ImFont* FontManager::extend_imgui_font_range(size_t index, const std::string& text)
-    const Item &act_item = m_font_list[m_font_selected];
-    for (auto &item : m_font_list) {
-        if (&item == &act_item) continue; // keep alive actual font file
-        item.font_file_with_cache = {};
-    }
-}
-
-const std::vector<FontManager::Item> &FontManager::get_styles() const
 {
-    return m_font_list;
+    // TODO: start using merge mode
-}
+    // ImFontConfig::MergeMode = true;
-
+    return create_imgui_font(text);
-const FontManager::Item &FontManager::get_activ_style() const
-{
-    return m_font_list[m_font_selected];
 }
 
 void FontManager::make_unique_name(std::string &name)
@@ -310,46 +260,10 @@ void FontManager::make_unique_name(std::string &name)
     name = new_name;
 }
 
-bool FontManager::set_up_font_file(size_t item_index)
-{ 
-    Item &item = m_font_list[item_index];
-    FontItem &fi = item.font_item;
-    if (fi.type == FontItem::Type::file_path) {
-        // fill font name after load from .3mf
-        if (fi.name.empty()) fi.name = get_file_name(fi.path);
-        std::unique_ptr<Emboss::FontFile> font_ptr =
-            Emboss::create_font_file(fi.path.c_str());
-        if (font_ptr == nullptr) return false;
-        item.font_file_with_cache = 
-            Emboss::FontFileWithCache(std::move(font_ptr));
-        return true;
-    }
-    if (fi.type != WxFontUtils::get_actual_type()) return false;
-    if (!item.wx_font.has_value())
-        item.wx_font = WxFontUtils::load_wxFont(fi.path);
-    if (!item.wx_font.has_value()) return false;
-    return set_wx_font(item_index, *item.wx_font);
-}
-
-ImFont* FontManager::extend_imgui_font_range(size_t index, const std::string& text)
-{
-    auto &font_index_opt = m_font_list[m_font_selected].imgui_font_index;
-    if (!font_index_opt.has_value()) 
-        return create_imgui_font(index, text);
-
-    // TODO: start using merge mode
-    // ImFontConfig::MergeMode = true;
-
-    free_imgui_fonts();
-    return create_imgui_font(index, text);
-}
-
-
 void FontManager::init_trunc_names(float max_width) { 
-    for (auto &s : m_font_list) {
+    for (auto &s : m_font_list)
         if (s.truncated_name.empty())
             s.truncated_name = ImGuiWrapper::trunc(s.font_item.name, max_width);
-    }
 }
 
 #include "slic3r/GUI/Jobs/CreateFontStyleImagesJob.hpp"
@@ -396,17 +310,19 @@ void FontManager::init_style_images(const Vec2i &max_size,
     m_temp_style_images = std::make_shared<StyleImagesData::StyleImages>();
     StyleImagesData::Items styles;
     styles.reserve(m_font_list.size());
-    for (Item &item : m_font_list) {
+    for (const Item &item : m_font_list) {
-        size_t index = &item - &m_font_list.front();
+        const FontItem &fi = item.font_item;
-        if (!item.font_file_with_cache.has_value() && !set_up_font_file(index))
+        std::optional<wxFont> wx_font_opt = WxFontUtils::load_wxFont(fi.path);
-            continue;
+        if (!wx_font_opt.has_value()) continue;
+        std::unique_ptr<Emboss::FontFile> font_file =
+            WxFontUtils::create_font_file(*wx_font_opt);
+        if (font_file == nullptr) continue;
         styles.push_back({
-            item.font_file_with_cache, 
+            Emboss::FontFileWithCache(std::move(font_file)), 
-            item.font_item.name,
+            fi.name,
-            item.font_item.prop
+            fi.prop
         });
     }
-
     auto &worker = wxGetApp().plater()->get_ui_job_worker();
     StyleImagesData data{std::move(styles), max_size, text, m_temp_style_images};
     queue_job(worker, std::make_unique<CreateFontStyleImagesJob>(std::move(data)));
@@ -428,13 +344,6 @@ void FontManager::free_style_images() {
     m_exist_style_images = false;
 }
 
-void FontManager::free_imgui_fonts()
-{ 
-    for (auto &item : m_font_list) 
-        item.imgui_font_index.reset();
-    m_imgui_font_atlas.Clear();
-}
-
 float FontManager::min_imgui_font_size = 18.f;
 float FontManager::max_imgui_font_size = 60.f;
 float FontManager::get_imgui_font_size(const FontProp         &prop,
@@ -452,28 +361,26 @@ float FontManager::get_imgui_font_size(const FontProp         &prop,
     return c1 * std::abs(prop.size_in_mm) / 0.3528f;
 }
 
-ImFont *FontManager::create_imgui_font(size_t index, const std::string &text)
+ImFont *FontManager::create_imgui_font(const std::string &text)
 {
-    free_imgui_fonts(); // TODO: remove it after correct initialization
+    auto& ff = m_style_cache.font_file;
-
+    if (!ff.has_value()) return nullptr;
-    if (index >= m_font_list.size()) return nullptr;
+    const Emboss::FontFile &font_file = *ff.font_file;
-    Item &item = m_font_list[index];
-    if (!item.font_file_with_cache.has_value()) return nullptr;
-    const Emboss::FontFile &font_file = *item.font_file_with_cache.font_file;
 
     // TODO: Create glyph range
     ImFontGlyphRangesBuilder builder;
     builder.AddRanges(m_imgui_init_glyph_range);
     if (!text.empty())
         builder.AddText(text.c_str());
-    item.font_ranges.clear();
 
-    builder.BuildRanges(&item.font_ranges);
+    ImVector<ImWchar> &ranges = m_style_cache.ranges;
+    ranges.clear();
+    builder.BuildRanges(&ranges);
         
-    m_imgui_font_atlas.Flags |= ImFontAtlasFlags_NoMouseCursors |
+    m_style_cache.atlas.Flags |= ImFontAtlasFlags_NoMouseCursors |
                                 ImFontAtlasFlags_NoPowerOfTwoHeight;
 
-    const FontProp &font_prop = item.font_item.prop;
+    const FontProp &font_prop = m_style_cache.font_item.prop;
     float font_size = get_imgui_font_size(font_prop, font_file);
     if (font_size < min_imgui_font_size)
         font_size = min_imgui_font_size;
@@ -499,12 +406,12 @@ ImFont *FontManager::create_imgui_font(size_t index, const std::string &text)
     font_config.FontDataOwnedByAtlas = false;
 
     const std::vector<unsigned char> &buffer = *font_file.data;
-    ImFont * font = m_imgui_font_atlas.AddFontFromMemoryTTF(
+    ImFont * font = m_style_cache.atlas.AddFontFromMemoryTTF(
-        (void *) buffer.data(), buffer.size(), font_size, &font_config, item.font_ranges.Data);
+        (void *) buffer.data(), buffer.size(), font_size, &font_config, m_style_cache.ranges.Data);
 
     unsigned char *pixels;
     int            width, height;
-    m_imgui_font_atlas.GetTexDataAsAlpha8(&pixels, &width, &height);
+    m_style_cache.atlas.GetTexDataAsAlpha8(&pixels, &width, &height);
 
     // Upload texture to graphics system
     GLint last_texture;
@@ -523,32 +430,23 @@ ImFont *FontManager::create_imgui_font(size_t index, const std::string &text)
                           GL_ALPHA, GL_UNSIGNED_BYTE, pixels));
 
     // Store our identifier
-    m_imgui_font_atlas.TexID = (ImTextureID) (intptr_t) font_texture;
+    m_style_cache.atlas.TexID = (ImTextureID) (intptr_t) font_texture;
-    assert(!m_imgui_font_atlas.Fonts.empty());
+    assert(!m_style_cache.atlas.Fonts.empty());
-    if (m_imgui_font_atlas.Fonts.empty()) return nullptr;
+    if (m_style_cache.atlas.Fonts.empty()) return nullptr;
-    assert(font == m_imgui_font_atlas.Fonts.back());
+    assert(font == m_style_cache.atlas.Fonts.back());
-    item.imgui_font_index = m_imgui_font_atlas.Fonts.size() - 1;
     assert(font->IsLoaded());
     return font;
 }
 
-bool FontManager::set_wx_font(size_t item_index, const wxFont &wx_font) {
+bool FontManager::set_wx_font(const wxFont &wx_font) {
     std::unique_ptr<Emboss::FontFile> font_file = 
         WxFontUtils::create_font_file(wx_font);
     if (font_file == nullptr) return false;
-
+    m_style_cache.font_file = 
-    Item &item = m_font_list[item_index];
-    item.font_file_with_cache = 
         Emboss::FontFileWithCache(std::move(font_file));
-    item.wx_font = wx_font;
+    m_style_cache.wx_font = wx_font; // copy
-
+    FontItem &fi = m_style_cache.font_item;
-    FontItem &fi = item.font_item;
+    fi.type = WxFontUtils::get_actual_type();
-    fi.type      = WxFontUtils::get_actual_type();
-
-    // fill font name after load from .3mf
-    if (fi.name.empty())
-        fi.name = WxFontUtils::get_human_readable_name(*item.wx_font);
-
     clear_imgui_font();
     return true;
 }

src/slic3r/Utils/FontManager.hpp

@@ -1,10 +1,13 @@
 #ifndef slic3r_FontManager_hpp_
 #define slic3r_FontManager_hpp_
 
+#include <memory>
 #include <optional>
+#include <string>
 #include <imgui/imgui.h>
 #include <GL/glew.h>
 #include <libslic3r/Emboss.hpp>
+#include <libslic3r/AppConfig.hpp>
 
 class wxFont; 
 
@@ -23,6 +26,21 @@ public:
     FontManager(const ImWchar *language_glyph_range);
     ~FontManager();
 
+    /// <summary>
+    /// Load font style list from config
+    /// Also select actual activ font
+    /// </summary>
+    /// <param name="cfg">Application configuration loaded from file "PrusaSlicer.ini"</param>
+    /// <param name="default_font_list">Used when list is not loadable from config</param>
+    void init(const AppConfig *cfg, const FontList &default_font_list);
+    
+    /// <summary>
+    /// Write font list into AppConfig
+    /// </summary>
+    /// <param name="cfg">Stor into this configuration</param>
+    /// <param name="item_to_store">Configuration</param>
+    bool store_font_list_to_app_config(AppConfig *cfg);
+
     /// <summary>
     /// Change order of style item in m_font_list.
     /// Fix selected font index when (i1 || i2) == m_font_selected 
@@ -31,11 +49,6 @@ public:
     /// <param name="i2">Second index to m_font_list</param>
     void swap(size_t i1, size_t i2);
 
-    /// <summary>
-    /// Duplicate selected font style
-    /// </summary>
-    void duplicate();
-
     /// <summary>
     /// Remove style from m_font_list.
     /// Fix selected font index when index is under m_font_selected
@@ -57,8 +70,10 @@ public:
     /// <param name="font_index">New font index(from m_font_list range)</param>
     /// <returns>True on succes. False on fail load font</returns>
     bool load_font(size_t font_index);
+    // load font style not stored in list
+    bool load_font(const FontItem &fi);
     // fastering load font on index by wxFont, ignore type and descriptor
-    bool load_font(size_t font_index, const wxFont &font);
+    bool load_font(const FontItem &fi, const wxFont &font);
     
     // clear actual selected glyphs cache
     void clear_glyphs_cache();
@@ -70,13 +85,11 @@ public:
     // used at initialize phaze - fonts could be modified in appConfig file by user
     bool load_first_valid_font();
 
-    // add font into manager
+    // getter on stored fontItem
-    void add_font(FontItem font_item);
+    const FontItem *get_stored_font_item() const;
-    // add multiple font into manager
-    void add_fonts(FontList font_list);
 
-    // getter on active font file for access to glyphs
+    // getter on stored wxFont
-    std::shared_ptr<const Emboss::FontFile> &get_font_file();
+    const std::optional<wxFont> &get_stored_wx_font() const;
 
     // getter on active font item for access to font property
     const FontItem &get_font_item() const;
@@ -90,11 +103,18 @@ public:
     const std::optional<wxFont> &get_wx_font() const;
     std::optional<wxFont> &get_wx_font();
 
-    // setter of font for actual selection
+    bool exist_stored_style() const;
-    bool set_wx_font(const wxFont &wx_font);
+    size_t get_style_index() const;
+
+    // getter on font file with cache
+    Emboss::FontFileWithCache &get_font_file_with_cache();
 
     // Getter for cached trucated name for style list selector
     std::string &get_truncated_name();
+        
+    // setter of font for actual selection
+    bool set_wx_font(const wxFont &wx_font);
+
 
     // Getter on acitve font pointer for imgui
     // Initialize imgui font(generate texture) when doesn't exist yet.
@@ -102,9 +122,6 @@ public:
     ImFont *get_imgui_font();
     // initialize font range by unique symbols in text
     ImFont *create_imgui_font(const std::string& text);
-
-    // free used memory and font file data
-    void free_except_active_font();
     
     // init truncated names of styles
     void init_trunc_names(float max_width);
@@ -120,7 +137,6 @@ public:
     struct Item;
     // access to all managed font styles
     const std::vector<Item> &get_styles() const;
-    const Item &get_activ_style() const; // TODO: rename to style
 
     /// <summary>
     /// Describe image in GPU to show settings of style
@@ -140,25 +156,15 @@ public:
     /// </summary>
     struct Item
     {
+        // define font, style and other property of text
         FontItem font_item;
 
         // cache for view font name with maximal width in imgui
         std::string truncated_name; 
 
-        // share font file data with emboss job thread
-        Emboss::FontFileWithCache font_file_with_cache;
-
-        std::optional<size_t> imgui_font_index;
-
-        // must live same as imgui_font inside of atlas
-        ImVector<ImWchar> font_ranges;
-
-        // wx widget font
-        std::optional<wxFont> wx_font;
-
         // visualization of style
         std::optional<StyleImage> image;
-    };   
+    };
 
     // check if exist selected font style in manager
     bool is_activ_font();
@@ -168,35 +174,51 @@ public:
     static float min_imgui_font_size;
     static float max_imgui_font_size;
     static float get_imgui_font_size(const FontProp& prop, const Emboss::FontFile& file);
+
 private:
-    ImFontAtlas m_imgui_font_atlas;
+    /// <summary>
+    /// Cache data from style to reduce amount of:
+    /// 1) loading font from file
+    /// 2) Create atlas of symbols for imgui
+    /// 3) Keep loaded(and modified by style) glyphs from font
+    /// </summary>
+    struct StyleCache
+    {
+        // share font file data with emboss job thread
+        Emboss::FontFileWithCache font_file = {};
 
-    void duplicate(size_t index);
+        // must live same as imgui_font inside of atlas
-    // load actual selected font
+        ImVector<ImWchar> ranges = {};
-    ImFont *create_imgui_font(size_t index, const std::string &text);
 
-    bool load_active_font();
+        // Keep only actual style in atlas
+        ImFontAtlas atlas = {};
 
-    bool set_wx_font(size_t item_index, const wxFont &wx_font);
+        // wx widget font
-        
+        std::optional<wxFont> wx_font = {};
-    // getter on index selected font pointer for imgui
-    // text could extend font atlas when not in glyph range
-    ImFont *get_imgui_font(size_t item_index);
 
+        // cache for view font name with maximal width in imgui
+        std::string truncated_name; 
+
+        // actual used font item
+        FontItem font_item = {};
+
+        // cache for stored wx font to not create every frame
+        std::optional<wxFont> stored_wx_font;
+
+        // index into m_font_list
+        size_t font_index = std::numeric_limits<size_t>::max();
+
+    } m_style_cache;
+            
     // extend actual imgui font when exist unknown char in text
     // NOTE: imgui_font has to be unused
     // return true when extend range otherwise FALSE
     ImFont *extend_imgui_font_range(size_t font_index, const std::string &text);
 
-    void free_imgui_fonts();
-
-    bool set_up_font_file(size_t item_index);
-
     void make_unique_name(std::string &name);
 
     // Privat member
     std::vector<Item> m_font_list;
-    size_t            m_font_selected; // index to m_font_list
 
     /// <summary>
     /// Keep data needed to create Font Style Images in Job