Hint notification

Reads data from hints.ini. Has hyperlinks to highlight settings, toolbars and gizmos.
2021-07-29 13:15:17 +02:00 · 2021-07-29 13:15:17 +02:00 · 0d74502aeb
commit 0d74502aeb
parent 7fd34e52c1
29 changed files with 2116 additions and 197 deletions
--- a/resources/data/hints.ini
+++ b/resources/data/hints.ini
@ -0,0 +1,168 @@
 [hint:Perspective camera]
 text = Perspective camera\nDid you know that you can use the <b>K</b> key to quickly switch between an orthographic and perspective camera?
 [hint:Camera Views]
 text = Camera Views\nDid you know that you can use the number keys <b>0-6</b> to quickly switch between predefined camera angles?
 [hint:Place on face]
 text = Place on face\nDid you know that you can quickly orient a model so that one of its faces sits on the print bed? Select the<a>Place on face</a>function or press the <b>F</b> key.
 hypertext_type = gizmo
 hypertext_gizmo_item = place
 [hint:Set number of instances]
 text = Set number of instances\nDid you know that you can right-click a model and set an exact number of instances instead of copy-pasting it several times?
 [hint:Combine infill]
 text = Combine infill\nDid you know that you can print the infill with a higher layer height compared to perimeters to save print time using the setting<a>Combine infill every.</a>
 hypertext_type = settings
 hypertext_settings_opt = infill_every_layers
 hypertext_settings_type = 1
 hypertext_settings_category = Infill
 disabled_modes = SLA; simple
 [hint:Hiding sidebar]
 text = Hiding sidebar\nDid you know that you can hide the right sidebar using the shortcut <b>Shift+Tab</b>? You can also enable the icon for this from the<a>Preferences.</a>
 hypertext_type = preferences
 hypertext_preferences_page = 2
 [hint:Variable layer height]
 text = Variable layer height\nDid you know that you can print different regions of your model with a different layer height and smooth the transitions between them? Try the<a>Variable layer height tool.</a>(Not available for SLA printers.)
 hypertext_type = plater
 hypertext_plater_item = layersediting
 disabled_modes = SLA
 [hint:Undo/redo history]
 text = Undo/redo history\nDid you know that you can right-click the<a>undo/redo arrows</a>to see the history of changes and to undo or redo several actions at once?
 hypertext_type = plater
 hypertext_plater_item = undo
 [hint:Auto-arrange settings]
 text = Auto-arrange settings\nDid you know that you can right-click the<a>auto-arrange icon</a>to adjust the size of the gap between objects and to allow automatic rotations?
 hypertext_type = plater
 hypertext_plater_item = arrange
 [hint:Reload from disk]
 text = Reload from disk\nDid you know that if you created a newer version of your model, you can simply reload it in PrusaSlicer? Right-click the model in the 3D view and choose Reload from disk. Read more in the<a>documentation.</a>
 hypertext_type = link
 hypertext_link = https://help.prusa3d.com/en/article/reload-from-disk_120427
 [hint:Different layer height for each model]
 text = Different layer height for each model\nDid you know that you can print each model on the plater with a different layer height? Right-click the model in the 3D view, choose Layers and Perimeters and adjust the values in the right panel. Read more in the<a>documentation.</a>
 hypertext_type = link
 hypertext_link = https://help.prusa3d.com/en/article/per-model-settings_1674
 [hint:Solid infill threshold area]
 text = Solid infill threshold area\nDid you know that you can make parts of your model with a small cross-section be filled with solid infill automatically? Set the<a>Solid infill threshold area.</a>(Expert mode only.)
 hypertext_type = settings
 hypertext_settings_opt = solid_infill_below_area
 hypertext_settings_type = 1
 hypertext_settings_category = Infill  
 disabled_modes = SLA; simple; advanced
 [hint:Search functionality]
 text = Search functionality\n Did you know that you use the<a>Search</a>tool to quickly find a specific PrusaSlicer setting? Or use the familiar shortcut <b>Ctrl+F</b>.
 hypertext_type = plater
 hypertext_plater_item = search
 [hint:Box selection]
 text = Box selection\nDid you know that you can do a box selection with Shift+Mouse drag? You can also box-deselect objects with <b>Alt+Mouse drag</b>.
 [hint:Zoom on selected objects or on all objects if none selected]
 text =Zoom on selected objects or on all objects if none selected\nDid you know that you can zoom in on selected objects by pressing the <b>Z</b> key? If none are selected, the camera will zoom on all objects in the scene. 
 [hint:Shapes gallery]
 text = Shapes gallery\nDid you know that PrusaSlicer has a Shapes Gallery? You can use the included models as modifiers, negative volumes or as printable objects. Right-click the platter and select<a>Add Shape - Gallery.</a>
 hypertext_type = gallery
 disable_modes = simple
 [hint:Printable toggle]
 text = Printable toggle\nDid you know that you can disable the G-code generation for the selected model without having to move or delete it? Toggle the Printable property of a model from the Right-click context menu.
 [hint:Mirror]
 text = Mirror\nDid you know that you can mirror the selected model to create a reversed version of it? Right-click the model, select Mirror and pick the mirror axis.
 [hint:PageUp / PageDown quick rotation by 45 degrees]
 text = PageUp / PageDown quick rotation by 45 degrees\nDid you know that you can quickly rotate selected models by 45 degrees around the Z-axis clockwise or counter-clockwise by pressing <b>Page Up</b> or <b>Page Down</b> respectively?
 [hint:Load config from G-code]
 text = Load config from G-code\nDid you know that you can use File-Import Config to load print, filament and printer profiles from an existing G-code file? Similarly, you can use File-Import SL1 archive, which also lets you reconstruct 3D models from the voxel data.
 [hint:Ironing]
 text = Ironing\nDid you know that you can smooth top surfaces of prints using Ironing? The nozzle will run a special second infill phase at the same layer to fill in holes and flatten any lifted plastic. Read more in the<a>documentation.</a> (Requires Advanced or Expert mode.)
 hypertext_type = link
 hypertext_link = https://help.prusa3d.com/en/article/ironing_177488
 disabled_modes = SLA; simple
 [hint:Fuzzy skin]
 text = Fuzzy skin\nDid you know that you can create rough fibre-like texture on the sides of your models using the<a>Fuzzy skin</a>feature? You can also use modifiers to apply fuzzy-skin only to a portion of your model.
 hypertext_type = settings
 hypertext_settings_opt = fuzzy_skin
 hypertext_settings_type = 1
 hypertext_settings_category = Layers and perimeters
 disabled_modes = SLA
 [hint:Negative volume]
 text = Negative volume\nDid you know that you can subtract one mesh from another using the Negative volume modifier? That way you can, for example, create easily resizable holes directly in PrusaSlicer. Read more in the<a>documentation.</a>(Requires Advanced or Expert mode.)
 hypertext_type = link
 hypertext_link = https://help.prusa3d.com/en/article/negative-volume_238503
 disabled_modes = SLA; simple
 [hint:Paint-on supports]
 text = Paint-on supports\nDid you know that you can paint directly on the object and select areas, where supports should be enforced or blocked? Try the<a>Paint-on supports</a>feature. (Requires Advanced or Expert mode.)
 hypertext_type = gizmo
 hypertext_gizmo_item = fdm_supports
 disabled_modes = SLA; simple
 [hint:Paint-on seam]
 text = Paint-on seam\nDid you know that you can paint directly on the object and select where to place the start/endpoint of each perimeter loop? Try the<a>Seam painting</a>feature. (Requires Advanced or Expert mode.)
 hypertext_type = gizmo
 hypertext_gizmo_item = seam
 disabled_modes = SLA; simple
 [hint:Insert Pause]
 text = Insert Pause\nDid you know that you can schedule the print to pause at a specific layer? Right-click the layer slider in the Preview and select Add pause print (M601). This can be used to insert magnets, weights or nuts into your prints. Read more in the<a>documentation.</a>
 hypertext_type = link
 hypertext_link = https://help.prusa3d.com/en/article/insert-pause-or-custom-g-code-at-layer_120490#insert-pause-at-layer
 [hint:Insert Custom G-code]
 text = Insert Custom G-code\nDid you know that you can insert a custom G-code at a specific layer? Right-click the layer in the Preview and select Add custom G-code. With this function you can, for example, create a temperature tower. Read more in the<a>documentation.</a>
 hypertext_type = link
 hypertext_link = https://help.prusa3d.com/en/article/insert-pause-or-custom-g-code-at-layer_120490#insert-custom-g-code-at-layer
 [hint:Configuration snapshots]
 text = Configuration snapshots\nDid you know that roll back to a complete backup of all system and user profiles? You can view and move back and forth between snapshots using the Configuration - Configuration snapshots menu. Read more in the<a>documentation.</a>
 hypertext_type = link
 hypertext_link = https://help.prusa3d.com/en/article/configuration-snapshots_1776
 [hint:Minimum wall thickness]
 text = Minimum wall thickness\nDid you know that instead of the number of top and bottom layers, you can define the<a>Minimum shell thickness</a>in millimeters? This feature is especially useful when using the variable layer height function.
 hypertext_type = settings
 hypertext_settings_opt = top_solid_min_thickness
 hypertext_settings_type = 1
 hypertext_settings_category = Layers and perimeters
 disabled_modes = SLA
 [hint:Settings in non-modal window]
 text = Settings in non-modal window\nDid you know that you can open the Settings in a new non-modal window? This means you can have settings open on one screen and the G-code Preview on the other. Go to the<a>Preferences</a>and select Settings in non-modal window.
 hypertext_type = preferences
 hypertext_preferences_page = 2
 [hint:Adaptive infills]
 text = Adaptive infills\nDid you know that you can use the Adaptive cubic and Support cubic infills to decrease the print time and lower the filament consumption? Read more in the<a>documentation.</a>
 hypertext_type = link
 hypertext_link = https://help.prusa3d.com/en/article/infill-patterns_177130
 [hint:Fullscreen mode]
 text = Fullscreen mode\nDid you know that you can switch PrusaSlicer to fullscreen mode? Use the <b>F11</b> hotkey.
 [hint:Simplify mesh]
 text = Simplify mesh\nDid you know that you can reduce the number of triangles in a mesh using the Simplify mesh feature? Right-click the model and select Simplify model. Read more in the<a>documentation.</a>
 hypertext_type = link
 hypertext_link = https://help.prusa3d.com/en/article/simplify-mesh_238941
 #[hint:]
 #text = 
 #hypertext =
 #follow_text =
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     inkscape:window-width="2295"
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     gridtolerance="10"
     objecttolerance="10"
     borderopacity="1"
     bordercolor="#666666"
     pagecolor="#ffffff" />
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     id="line2"
     style="fill: none;stroke: #ed6b21;stroke-linecap: round;stroke-miterlimit: 10;stroke-width: 17.007874015748033px"
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     x2="59.2"
     y1="290.3"
     x1="59.2" />
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     id="line4"
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     x1="8.5" />
 </svg>
--- a/src/imgui/imconfig.h
+++ b/src/imgui/imconfig.h
@ -131,8 +131,6 @@ namespace ImGui
    const char MaterialIconMarker      = 0x8;
    const char CloseNotifButton        = 0xB;
    const char CloseNotifHoverButton   = 0xC;
 //	const char TimerDotMarker          = 0xE;
 //	const char TimerDotEmptyMarker     = 0xF;
    const char MinimalizeButton        = 0xE;
    const char MinimalizeHoverButton   = 0xF;
    const char WarningMarker           = 0x10;
@ -141,6 +139,12 @@ namespace ImGui
    const char EjectHoverButton        = 0x13;
    const char CancelButton            = 0x14;
    const char CancelHoverButton       = 0x15;
    const char LeftArrowButton         = 0x16;
    const char LeftArrowHoverButton    = 0x17;
    const char RightArrowButton        = 0x18;
    const char RightArrowHoverButton   = 0x19;
    const char PreferencesButton       = 0x1A;
    const char PreferencesHoverButton  = 0x1B;
 //    void MyFunction(const char* name, const MyMatrix44& v);
 }
--- a/src/libslic3r/AppConfig.cpp
+++ b/src/libslic3r/AppConfig.cpp
@ -170,6 +170,12 @@ void AppConfig::set_defaults()
    if (get("show_splash_screen").empty())
        set("show_splash_screen", "1");
    if (get("last_hint").empty())
        set("last_hint", "0");
    if (get("show_hints").empty())
        set("show_hints", "1");
 #ifdef _WIN32
    if (get("use_legacy_3DConnexion").empty())
        set("use_legacy_3DConnexion", "0");
--- a/src/slic3r/CMakeLists.txt
+++ b/src/slic3r/CMakeLists.txt
@ -201,6 +201,8 @@ set(SLIC3R_GUI_SOURCES
    GUI/ProjectDirtyStateManager.cpp
    GUI/DesktopIntegrationDialog.cpp
    GUI/DesktopIntegrationDialog.hpp
    GUI/HintNotification.cpp
    GUI/HintNotification.hpp
    Utils/Http.cpp
    Utils/Http.hpp
    Utils/FixModelByWin10.cpp
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@ -900,6 +900,8 @@ wxDEFINE_EVENT(EVT_GLCANVAS_ADAPTIVE_LAYER_HEIGHT_PROFILE, Event<float>);
 wxDEFINE_EVENT(EVT_GLCANVAS_SMOOTH_LAYER_HEIGHT_PROFILE, HeightProfileSmoothEvent);
 wxDEFINE_EVENT(EVT_GLCANVAS_RELOAD_FROM_DISK, SimpleEvent);
 wxDEFINE_EVENT(EVT_GLCANVAS_RENDER_TIMER, wxTimerEvent/*RenderTimerEvent*/);
 wxDEFINE_EVENT(EVT_GLCANVAS_TOOLBAR_HIGHLIGHTER_TIMER, wxTimerEvent);
 wxDEFINE_EVENT(EVT_GLCANVAS_GIZMO_HIGHLIGHTER_TIMER, wxTimerEvent);
 const double GLCanvas3D::DefaultCameraZoomToBoxMarginFactor = 1.25;
@ -2164,6 +2166,10 @@ void GLCanvas3D::bind_event_handlers()
        m_canvas->Bind(wxEVT_MOUSEWHEEL, &GLCanvas3D::on_mouse_wheel, this);
        m_canvas->Bind(wxEVT_TIMER, &GLCanvas3D::on_timer, this);
        m_canvas->Bind(EVT_GLCANVAS_RENDER_TIMER, &GLCanvas3D::on_render_timer, this);
        m_toolbar_highlighter.set_timer_owner(m_canvas, 0);
        m_canvas->Bind(EVT_GLCANVAS_TOOLBAR_HIGHLIGHTER_TIMER, [this](wxTimerEvent&) { m_toolbar_highlighter.blink(); });
        m_gizmo_highlighter.set_timer_owner(m_canvas, 0);
        m_canvas->Bind(EVT_GLCANVAS_GIZMO_HIGHLIGHTER_TIMER, [this](wxTimerEvent&) { m_gizmo_highlighter.blink(); });
        m_canvas->Bind(wxEVT_LEFT_DOWN, &GLCanvas3D::on_mouse, this);
        m_canvas->Bind(wxEVT_LEFT_UP, &GLCanvas3D::on_mouse, this);
        m_canvas->Bind(wxEVT_MIDDLE_DOWN, &GLCanvas3D::on_mouse, this);
@ -4399,6 +4405,29 @@ bool GLCanvas3D::_init_main_toolbar()
        m_main_toolbar.set_enabled(false);
        return true;
    }
    // init arrow
    BackgroundTexture::Metadata arrow_data;
    arrow_data.filename = "toolbar_arrow.png";
 //    arrow_data.filename = "toolbar_arrow.svg";
    //arrow_data.left = 16;
    //arrow_data.top = 16;
    //arrow_data.right = 16;
    //arrow_data.bottom = 16;
    arrow_data.left = 0;
    arrow_data.top = 0;
    arrow_data.right = 0;
    arrow_data.bottom = 0;
    if (!m_main_toolbar.init_arrow(arrow_data))
    {
        BOOST_LOG_TRIVIAL(error) << "Main toolbar failed to load arrow texture.";
    }
    if (!m_gizmos.init_arrow(arrow_data))
    {
        BOOST_LOG_TRIVIAL(error) << "Gizmos manager failed to load arrow texture.";
    }
 //    m_main_toolbar.set_layout_type(GLToolbar::Layout::Vertical);
    m_main_toolbar.set_layout_type(GLToolbar::Layout::Horizontal);
@ -5313,6 +5342,11 @@ void GLCanvas3D::_render_gizmos_overlay()
 #endif /* __WXMSW__ */
    m_gizmos.render_overlay();
    if (m_gizmo_highlighter.m_render_arrow)
    {
        m_gizmos.render_arrow(*this, m_gizmo_highlighter.m_gizmo_type);
    }
 }
 void GLCanvas3D::_render_main_toolbar()
@ -5330,6 +5364,10 @@ void GLCanvas3D::_render_main_toolbar()
    m_main_toolbar.set_position(top, left);
    m_main_toolbar.render(*this);
    if (m_toolbar_highlighter.m_render_arrow)
    {
        m_main_toolbar.render_arrow(*this, m_toolbar_highlighter.m_toolbar_item);
    }
 }
 void GLCanvas3D::_render_undoredo_toolbar()
@ -6497,6 +6535,24 @@ bool GLCanvas3D::_deactivate_collapse_toolbar_items()
    return false;
 }
 void GLCanvas3D::highlight_toolbar_item(const std::string& item_name)
 {
    GLToolbarItem* item = m_main_toolbar.get_item(item_name);
    if (!item)
        item = m_undoredo_toolbar.get_item(item_name);
    if (!item || !item->is_visible())
        return;
    m_toolbar_highlighter.init(item, this);
 }
 void GLCanvas3D::highlight_gizmo(const std::string& gizmo_name)
 {
    GLGizmosManager::EType gizmo = m_gizmos.get_gizmo_from_name(gizmo_name);
    if(gizmo == GLGizmosManager::EType::Undefined)
        return;
    m_gizmo_highlighter.init(&m_gizmos, gizmo, this);
 }
 const Print* GLCanvas3D::fff_print() const
 {
    return (m_process == nullptr) ? nullptr : m_process->fff_print();
@ -6516,10 +6572,119 @@ void GLCanvas3D::WipeTowerInfo::apply_wipe_tower() const
    wxGetApp().get_tab(Preset::TYPE_PRINT)->load_config(cfg);
 }
 void GLCanvas3D::RenderTimer::Notify()
 {
    wxPostEvent((wxEvtHandler*)GetOwner(), RenderTimerEvent( EVT_GLCANVAS_RENDER_TIMER, *this));
 }
 void GLCanvas3D::ToolbarHighlighterTimer::Notify()
 {
    wxPostEvent((wxEvtHandler*)GetOwner(), ToolbarHighlighterTimerEvent(EVT_GLCANVAS_TOOLBAR_HIGHLIGHTER_TIMER, *this));
 }
 void GLCanvas3D::GizmoHighlighterTimer::Notify()
 {
    wxPostEvent((wxEvtHandler*)GetOwner(), GizmoHighlighterTimerEvent(EVT_GLCANVAS_GIZMO_HIGHLIGHTER_TIMER, *this));
 }
 void GLCanvas3D::ToolbarHighlighter::set_timer_owner(wxEvtHandler* owner, int timerid/* = wxID_ANY*/)
 {
    m_timer.SetOwner(owner, timerid);
 }
 void GLCanvas3D::ToolbarHighlighter::init(GLToolbarItem* toolbar_item, GLCanvas3D* canvas)
 {
    if (m_timer.IsRunning())
        invalidate();
    if (!toolbar_item || !canvas)
        return;
    m_timer.Start(300, false);
    m_toolbar_item = toolbar_item;
    m_canvas       = canvas;
 }
 void GLCanvas3D::ToolbarHighlighter::invalidate()
 {
    m_timer.Stop();
    if (m_toolbar_item) {
        m_toolbar_item->set_highlight(GLToolbarItem::EHighlightState::NotHighlighted);
    }
    m_toolbar_item = nullptr;
    m_blink_counter = 0;
    m_render_arrow = false;
 }
 void GLCanvas3D::ToolbarHighlighter::blink()
 {
    if (m_toolbar_item) {
        char state = m_toolbar_item->get_highlight();
        if (state != (char)GLToolbarItem::EHighlightState::HighlightedShown)
            m_toolbar_item->set_highlight(GLToolbarItem::EHighlightState::HighlightedShown);
        else 
            m_toolbar_item->set_highlight(GLToolbarItem::EHighlightState::HighlightedHidden);
        m_render_arrow = !m_render_arrow;
        m_canvas->set_as_dirty();
    }
    else
        invalidate();
    if ((++m_blink_counter) >= 11)
        invalidate();
 }
 void GLCanvas3D::GizmoHighlighter::set_timer_owner(wxEvtHandler* owner, int timerid/* = wxID_ANY*/)
 {
    m_timer.SetOwner(owner, timerid);
 }
 void GLCanvas3D::GizmoHighlighter::init(GLGizmosManager* manager, GLGizmosManager::EType gizmo, GLCanvas3D* canvas)
 {
    if (m_timer.IsRunning())
        invalidate();
    if (!gizmo || !canvas)
        return;
    m_timer.Start(300, false);
    m_gizmo_manager = manager;
    m_gizmo_type    = gizmo;
    m_canvas        = canvas;
 }
 void GLCanvas3D::GizmoHighlighter::invalidate()
 {
    m_timer.Stop();
    if (m_gizmo_manager) {
        m_gizmo_manager->set_highlight(GLGizmosManager::EType::Undefined, false);
    }
    m_gizmo_manager = nullptr;
    m_gizmo_type = GLGizmosManager::EType::Undefined;
    m_blink_counter = 0;
    m_render_arrow = false;
 }
 void GLCanvas3D::GizmoHighlighter::blink()
 {
    if (m_gizmo_manager) {
        if (m_blink_counter % 2 == 0)
            m_gizmo_manager->set_highlight(m_gizmo_type, true);
        else
            m_gizmo_manager->set_highlight(m_gizmo_type, false);
        m_render_arrow = !m_render_arrow;
        m_canvas->set_as_dirty();
    }
    else
        invalidate();
    if ((++m_blink_counter) >= 11)
        invalidate();
 }
 } // namespace GUI
 } // namespace Slic3r
--- a/src/slic3r/GUI/GLCanvas3D.hpp
+++ b/src/slic3r/GUI/GLCanvas3D.hpp
@ -93,6 +93,43 @@ private:
    wxTimer* m_timer;
 };
 class  ToolbarHighlighterTimerEvent : public wxEvent
 {
 public:
    ToolbarHighlighterTimerEvent(wxEventType type, wxTimer& timer)
        : wxEvent(timer.GetId(), type),
        m_timer(&timer)
    {
        SetEventObject(timer.GetOwner());
    }
    int GetInterval() const { return m_timer->GetInterval(); }
    wxTimer& GetTimer() const { return *m_timer; }
    virtual wxEvent* Clone() const { return new ToolbarHighlighterTimerEvent(*this); }
    virtual wxEventCategory GetEventCategory() const { return wxEVT_CATEGORY_TIMER; }
 private:
    wxTimer* m_timer;
 };
 class  GizmoHighlighterTimerEvent : public wxEvent
 {
 public:
    GizmoHighlighterTimerEvent(wxEventType type, wxTimer& timer)
        : wxEvent(timer.GetId(), type),
        m_timer(&timer)
    {
        SetEventObject(timer.GetOwner());
    }
    int GetInterval() const { return m_timer->GetInterval(); }
    wxTimer& GetTimer() const { return *m_timer; }
    virtual wxEvent* Clone() const { return new GizmoHighlighterTimerEvent(*this); }
    virtual wxEventCategory GetEventCategory() const { return wxEVT_CATEGORY_TIMER; }
 private:
    wxTimer* m_timer;
 };
 wxDECLARE_EVENT(EVT_GLCANVAS_OBJECT_SELECT, SimpleEvent);
@ -137,6 +174,8 @@ wxDECLARE_EVENT(EVT_GLCANVAS_ADAPTIVE_LAYER_HEIGHT_PROFILE, Event<float>);
 wxDECLARE_EVENT(EVT_GLCANVAS_SMOOTH_LAYER_HEIGHT_PROFILE, HeightProfileSmoothEvent);
 wxDECLARE_EVENT(EVT_GLCANVAS_RELOAD_FROM_DISK, SimpleEvent);
 wxDECLARE_EVENT(EVT_GLCANVAS_RENDER_TIMER, wxTimerEvent/*RenderTimerEvent*/);
 wxDECLARE_EVENT(EVT_GLCANVAS_TOOLBAR_HIGHLIGHTER_TIMER, wxTimerEvent);
 wxDECLARE_EVENT(EVT_GLCANVAS_GIZMO_HIGHLIGHTER_TIMER, wxTimerEvent);
 class GLCanvas3D
 {
@ -378,6 +417,16 @@ class GLCanvas3D
        virtual void Notify() override;
    };
    class ToolbarHighlighterTimer : public wxTimer {
    private:
        virtual void Notify() override;
    };
    class GizmoHighlighterTimer : public wxTimer {
    private:
        virtual void Notify() override;
    };
 public:
    enum ECursorType : unsigned char
    {
@ -517,6 +566,38 @@ private:
    SequentialPrintClearance m_sequential_print_clearance;
    bool m_sequential_print_clearance_first_displacement{ true };
    struct ToolbarHighlighter
    {
        void set_timer_owner(wxEvtHandler* owner, int timerid = wxID_ANY);
        void init(GLToolbarItem* toolbar_item, GLCanvas3D* canvas);
        void blink();
        void invalidate();
        bool                    m_render_arrow{ false };
        GLToolbarItem*          m_toolbar_item{ nullptr };
    private:
        GLCanvas3D*             m_canvas{ nullptr };
        int				        m_blink_counter{ 0 };
        ToolbarHighlighterTimer m_timer;       
    }
    m_toolbar_highlighter;
    struct GizmoHighlighter
    {
        void set_timer_owner(wxEvtHandler* owner, int timerid = wxID_ANY);
        void init(GLGizmosManager* manager, GLGizmosManager::EType gizmo, GLCanvas3D* canvas);
        void blink();
        void invalidate();
        bool                    m_render_arrow{ false };
        GLGizmosManager::EType  m_gizmo_type;
    private:
        GLGizmosManager*        m_gizmo_manager{ nullptr };
        GLCanvas3D*             m_canvas{ nullptr };
        int				        m_blink_counter{ 0 };
        GizmoHighlighterTimer   m_timer;
    }
    m_gizmo_highlighter;
 public:
    explicit GLCanvas3D(wxGLCanvas* canvas);
    ~GLCanvas3D();
@ -744,6 +825,9 @@ public:
    void use_slope(bool use) { m_slope.use(use); }
    void set_slope_normal_angle(float angle_in_deg) { m_slope.set_normal_angle(angle_in_deg); }
    void highlight_toolbar_item(const std::string& item_name);
    void highlight_gizmo(const std::string& gizmo_name);
    ArrangeSettings get_arrange_settings() const {
        const ArrangeSettings &settings = get_arrange_settings(this);
        ArrangeSettings ret = settings;
--- a/src/slic3r/GUI/GLToolbar.cpp
+++ b/src/slic3r/GUI/GLToolbar.cpp
@ -61,6 +61,7 @@ GLToolbarItem::GLToolbarItem(GLToolbarItem::EType type, const GLToolbarItem::Dat
    , m_state(Normal)
    , m_data(data)
    , m_last_action_type(Undefined)
    , m_highlight_state(NotHighlighted)
 {
 }
@ -91,7 +92,8 @@ void GLToolbarItem::render(unsigned int tex_id, float left, float right, float b
        assert((tex_width != 0) && (tex_height != 0));
        GLTexture::Quad_UVs ret;
        // tiles in the texture are spaced by 1 pixel
-        float icon_size_px = (float)(tex_width - 1) / (float)Num_States;
+        float icon_size_px = (float)(tex_width - 1) / ((float)Num_States + (float)Num_Rendered_Highlight_States);
        char render_state = (m_highlight_state ==  NotHighlighted ? m_state : Num_States + m_highlight_state);
        float inv_tex_width = 1.0f / (float)tex_width;
        float inv_tex_height = 1.0f / (float)tex_height;
        // tiles in the texture are spaced by 1 pixel
@ -99,7 +101,7 @@ void GLToolbarItem::render(unsigned int tex_id, float left, float right, float b
        float v_offset = 1.0f * inv_tex_height;
        float du = icon_size_px * inv_tex_width;
        float dv = icon_size_px * inv_tex_height;
-        float left = u_offset + (float)m_state * du;
+        float left = u_offset + (float)render_state * du;
        float right = left + du - u_offset;
        float top = v_offset + (float)m_data.sprite_id * dv;
        float bottom = top + dv - v_offset;
@ -183,6 +185,24 @@ bool GLToolbar::init(const BackgroundTexture::Metadata& background_texture)
    return res;
 }
 bool GLToolbar::init_arrow(const BackgroundTexture::Metadata& arrow_texture)
 {
    if (m_arrow_texture.texture.get_id() != 0)
        return true;
    std::string path = resources_dir() + "/icons/";
    bool res = false;
    if (!arrow_texture.filename.empty())
        res = m_arrow_texture.texture.load_from_file(path + arrow_texture.filename, false, GLTexture::SingleThreaded, false);
 //        res = m_arrow_texture.texture.load_from_svg_file(path + arrow_texture.filename, false, true, false, 100);
    if (res)
        m_arrow_texture.metadata = arrow_texture;
    return res;
 }
 GLToolbar::Layout::EType GLToolbar::get_layout_type() const
 {
    return m_layout.type;
@ -419,6 +439,8 @@ void GLToolbar::render(const GLCanvas3D& parent)
    }
 }
 bool GLToolbar::on_mouse(wxMouseEvent& evt, GLCanvas3D& parent)
 {
    if (!m_enabled)
@ -869,6 +891,21 @@ void GLToolbar::update_hover_state_vertical(const Vec2d& mouse_pos, GLCanvas3D&
    }
 }
 GLToolbarItem* GLToolbar::get_item(const std::string& item_name)
 {
    if (!m_enabled)
        return nullptr;
    for (GLToolbarItem* item : m_items)
    {
        if (item->get_name() == item_name)   
        {
            return item;
        }
    }
    return nullptr;
 }
 int GLToolbar::contains_mouse(const Vec2d& mouse_pos, const GLCanvas3D& parent) const
 {
    if (!m_enabled)
@ -1105,6 +1142,63 @@ void GLToolbar::render_background(float left, float top, float right, float bott
    }
 }
 void GLToolbar::render_arrow(const GLCanvas3D& parent, GLToolbarItem* highlighted_item)
 {
    float inv_zoom = (float)wxGetApp().plater()->get_camera().get_inv_zoom();
    float factor = inv_zoom * m_layout.scale;
    float scaled_icons_size = m_layout.icons_size * factor;
    float scaled_separator_size = m_layout.separator_size * factor;
    float scaled_gap_size = m_layout.gap_size * factor;
    float border = m_layout.border * factor;
    float separator_stride = scaled_separator_size + scaled_gap_size;
    float icon_stride = scaled_icons_size + scaled_gap_size;
    float left = m_layout.left;
    float top = m_layout.top - icon_stride;
    for (const GLToolbarItem* item : m_items) {
        if (!item->is_visible())
            continue;
        if (item->is_separator())
            left += separator_stride;
        else {   
            if (item->get_name() == highlighted_item->get_name())
                break;
            left += icon_stride;
        }
    }
    left += border;
    top -= separator_stride;
    float right = left + scaled_icons_size;
    unsigned int tex_id = m_arrow_texture.texture.get_id();
    float tex_width = (float)m_icons_texture.get_width();
    float tex_height = (float)m_icons_texture.get_height();
    if ((tex_id != 0) && (tex_width > 0) && (tex_height > 0)) {
        float inv_tex_width = (tex_width != 0.0f) ? 1.0f / tex_width : 0.0f;
        float inv_tex_height = (tex_height != 0.0f) ? 1.0f / tex_height : 0.0f;
        float internal_left = left + border - scaled_icons_size / 2; // add half scaled_icons_size for huge arrow
        float internal_right = right - border + scaled_icons_size / 2;
        float internal_top = top - border;
        // bottom is not moving and should be calculated from arrow texture sides ratio
        float arrow_sides_ratio = (float)m_arrow_texture.texture.get_height() / (float)m_arrow_texture.texture.get_width();
        float internal_bottom = internal_top - (internal_right - internal_left) * arrow_sides_ratio;
        float internal_left_uv = (float)m_arrow_texture.metadata.left * inv_tex_width;
        float internal_right_uv = 1.0f - (float)m_arrow_texture.metadata.right * inv_tex_width;
        float internal_top_uv = 1.0f - (float)m_arrow_texture.metadata.top * inv_tex_height;
        float internal_bottom_uv = (float)m_arrow_texture.metadata.bottom * inv_tex_height;
        GLTexture::render_sub_texture(tex_id, internal_left, internal_right, internal_bottom, internal_top, { { internal_left_uv, internal_bottom_uv }, { internal_right_uv, internal_bottom_uv }, { internal_right_uv, internal_top_uv }, { internal_left_uv, internal_top_uv } });
    }
 }
 void GLToolbar::render_horizontal(const GLCanvas3D& parent)
 {
    unsigned int tex_id = m_icons_texture.get_id();
@ -1217,6 +1311,8 @@ bool GLToolbar::generate_icons_texture()
        states.push_back({ 0, false }); // Hover
        states.push_back({ 0, false }); // HoverPressed
        states.push_back({ 2, false }); // HoverDisabled
        states.push_back({ 0, false }); // HighlightedShown
        states.push_back({ 2, false }); // HighlightedHidden
    }
    else {
        states.push_back({ 1, false }); // Normal
@ -1225,6 +1321,8 @@ bool GLToolbar::generate_icons_texture()
        states.push_back({ 0, false }); // Hover
        states.push_back({ 1, true });  // HoverPressed
        states.push_back({ 1, false }); // HoverDisabled
        states.push_back({ 0, false }); // HighlightedShown
        states.push_back({ 1, false }); // HighlightedHidden
    }
    unsigned int sprite_size_px = (unsigned int)(m_layout.icons_size * m_layout.scale);
--- a/src/slic3r/GUI/GLToolbar.hpp
+++ b/src/slic3r/GUI/GLToolbar.hpp
@ -65,6 +65,14 @@ public:
        Num_States
    };
    enum EHighlightState : unsigned char
    {
        HighlightedShown,
        HighlightedHidden,
        Num_Rendered_Highlight_States,
        NotHighlighted
    };
    struct Data
    {
        struct Option
@ -104,13 +112,16 @@ private:
    EState m_state;
    Data m_data;
    EActionType m_last_action_type;
-
+    EHighlightState m_highlight_state;
 public:
    GLToolbarItem(EType type, const Data& data);
    EState get_state() const { return m_state; }
    void set_state(EState state) { m_state = state; }
    EHighlightState get_highlight() const { return m_highlight_state; }
    void set_highlight(EHighlightState state) { m_highlight_state = state; }
    const std::string& get_name() const { return m_data.name; }
    const std::string& get_icon_filename() const { return m_data.icon_filename; }
    const std::string& get_tooltip() const { return m_data.tooltip; }
@ -143,7 +154,6 @@ public:
    bool update_enabled_state();
    void render(unsigned int tex_id, float left, float right, float bottom, float top, unsigned int tex_width, unsigned int tex_height, unsigned int icon_size) const;
 private:
    void set_visible(bool visible) { m_data.visible = visible; }
@ -236,6 +246,7 @@ private:
    GLTexture m_icons_texture;
    bool m_icons_texture_dirty;
    BackgroundTexture m_background_texture;
    BackgroundTexture m_arrow_texture;
    Layout m_layout;
    ItemsList m_items;
@ -262,6 +273,8 @@ public:
    bool init(const BackgroundTexture::Metadata& background_texture);
    bool init_arrow(const BackgroundTexture::Metadata& arrow_texture);
    Layout::EType get_layout_type() const;
    void set_layout_type(Layout::EType type);
    Layout::EHorizontalOrientation get_horizontal_orientation() const { return m_layout.horizontal_orientation; }
@ -310,9 +323,11 @@ public:
    bool update_items_state();
    void render(const GLCanvas3D& parent);
    void render_arrow(const GLCanvas3D& parent, GLToolbarItem* highlighted_item);
    bool on_mouse(wxMouseEvent& evt, GLCanvas3D& parent);
-
+    // get item pointer for highlighter timer
    GLToolbarItem* get_item(const std::string& item_name);
 private:
    void calc_layout();
    float get_width_horizontal() const;
--- a/src/slic3r/GUI/GUI_App.cpp
+++ b/src/slic3r/GUI/GUI_App.cpp
@ -661,6 +661,10 @@ void GUI_App::post_init()
            this->mainframe->load_config(this->init_params->extra_config);
    }
    // show "Did you know" notification
    if (app_config->get("show_hints") == "1")
        plater_->get_notification_manager()->push_hint_notification();
    // The extra CallAfter() is needed because of Mac, where this is the only way
    // to popup a modal dialog on start without screwing combo boxes.
    // This is ugly but I honestly found no better way to do it.
@ -1981,6 +1985,43 @@ void GUI_App::add_config_menu(wxMenuBar *menu)
    menu->Append(local_menu, _L("&Configuration"));
 }
 void GUI_App::open_preferences(size_t open_on_tab)
 {
    bool app_layout_changed = false;
    {
        // the dialog needs to be destroyed before the call to recreate_GUI()
        // or sometimes the application crashes into wxDialogBase() destructor
        // so we put it into an inner scope
        PreferencesDialog dlg(mainframe, open_on_tab);
        dlg.ShowModal();
        app_layout_changed = dlg.settings_layout_changed();
 #if ENABLE_GCODE_LINES_ID_IN_H_SLIDER
        if (dlg.seq_top_layer_only_changed() || dlg.seq_seq_top_gcode_indices_changed())
 #else
        if (dlg.seq_top_layer_only_changed())
 #endif // ENABLE_GCODE_LINES_ID_IN_H_SLIDER
            this->plater_->refresh_print();
 #ifdef _WIN32
        if (is_editor()) {
            if (app_config->get("associate_3mf") == "1")
                associate_3mf_files();
            if (app_config->get("associate_stl") == "1")
                associate_stl_files();
        }
        else {
            if (app_config->get("associate_gcode") == "1")
                associate_gcode_files();
        }
 #endif // _WIN32
    }
    if (app_layout_changed) {
        // hide full main_sizer for mainFrame
        mainframe->GetSizer()->Show(false);
        mainframe->update_layout();
        mainframe->select_tab(size_t(0));
    }
 }
 #if ENABLE_PROJECT_DIRTY_STATE
 bool GUI_App::has_unsaved_preset_changes() const
 {
--- a/src/slic3r/GUI/GUI_App.hpp
+++ b/src/slic3r/GUI/GUI_App.hpp
@ -256,6 +256,8 @@ public:
    wxString 		current_language_code_safe() const;
    bool            is_localized() const { return m_wxLocale->GetLocale() != "English"; }
    void            open_preferences(size_t open_on_tab = 0);
    virtual bool OnExceptionInMainLoop() override;
 #ifdef __APPLE__
--- a/src/slic3r/GUI/Gizmos/GLGizmosManager.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmosManager.cpp
@ -123,10 +123,28 @@ bool GLGizmosManager::init()
    m_current = Undefined;
    m_hover = Undefined;
    m_highlight = std::pair<EType, bool>(Undefined, false);
    return true;
 }
 bool GLGizmosManager::init_arrow(const BackgroundTexture::Metadata& arrow_texture)
 {
    if (m_arrow_texture.texture.get_id() != 0)
        return true;
    std::string path = resources_dir() + "/icons/";
    bool res = false;
    if (!arrow_texture.filename.empty())
        res = m_arrow_texture.texture.load_from_file(path + arrow_texture.filename, false, GLTexture::SingleThreaded, false);
 //        res = m_arrow_texture.texture.load_from_svg_file(path + arrow_texture.filename, false, true, false, 100);
    if (res)
        m_arrow_texture.metadata = arrow_texture;
    return res;
 }
 void GLGizmosManager::set_overlay_icon_size(float size)
 {
    if (m_layout.icons_size != size)
@ -973,6 +991,46 @@ void GLGizmosManager::render_background(float left, float top, float right, floa
    }
 }
 void GLGizmosManager::render_arrow(const GLCanvas3D& parent, EType highlighted_type) const
 {
    std::vector<size_t> selectable_idxs = get_selectable_idxs();
    if (selectable_idxs.empty())
        return;
    float cnv_w = (float)m_parent.get_canvas_size().get_width();
    float inv_zoom = (float)wxGetApp().plater()->get_camera().get_inv_zoom();
    float height = get_scaled_total_height();
    float zoomed_border = m_layout.scaled_border() * inv_zoom;
    float zoomed_top_x = (-0.5f * cnv_w) * inv_zoom;
    float zoomed_top_y = (0.5f * height) * inv_zoom;
    zoomed_top_x += zoomed_border;
    zoomed_top_y -= zoomed_border;
    float icons_size = m_layout.scaled_icons_size();
    float zoomed_icons_size = icons_size * inv_zoom;
    float zoomed_stride_y = m_layout.scaled_stride_y() * inv_zoom;
    for (size_t idx : selectable_idxs)
    {
        if (idx == highlighted_type) {      
            int tex_width = m_icons_texture.get_width();
            int tex_height = m_icons_texture.get_height();
            unsigned int tex_id = m_arrow_texture.texture.get_id();
            float inv_tex_width = (tex_width != 0.0f) ? 1.0f / tex_width : 0.0f;
            float inv_tex_height = (tex_height != 0.0f) ? 1.0f / tex_height : 0.0f;
            float internal_left_uv = (float)m_arrow_texture.metadata.left * inv_tex_width;
            float internal_right_uv = 1.0f - (float)m_arrow_texture.metadata.right * inv_tex_width;
            float internal_top_uv = 1.0f - (float)m_arrow_texture.metadata.top * inv_tex_height;
            float internal_bottom_uv = (float)m_arrow_texture.metadata.bottom * inv_tex_height;
            float arrow_sides_ratio = (float)m_arrow_texture.texture.get_height() / (float)m_arrow_texture.texture.get_width();
            GLTexture::render_sub_texture(tex_id, zoomed_top_x + zoomed_icons_size * 1.2f, zoomed_top_x + zoomed_icons_size * 1.2f + zoomed_icons_size * arrow_sides_ratio, zoomed_top_y - zoomed_icons_size, zoomed_top_y, { { internal_left_uv, internal_top_uv }, { internal_left_uv, internal_bottom_uv }, { internal_right_uv, internal_bottom_uv }, { internal_right_uv, internal_top_uv } });
            break;
        }
        zoomed_top_y -= zoomed_stride_y;
    }
 }
 void GLGizmosManager::do_render_overlay() const
 {
    std::vector<size_t> selectable_idxs = get_selectable_idxs();
@ -1012,7 +1070,7 @@ void GLGizmosManager::do_render_overlay() const
    if ((icons_texture_id == 0) || (tex_width <= 1) || (tex_height <= 1))
        return;
-    float du = (float)(tex_width - 1) / (4.0f * (float)tex_width); // 4 is the number of possible states if the icons
+    float du = (float)(tex_width - 1) / (6.0f * (float)tex_width); // 6 is the number of possible states if the icons
    float dv = (float)(tex_height - 1) / (float)(m_gizmos.size() * tex_height);
    // tiles in the texture are spaced by 1 pixel
@ -1022,9 +1080,9 @@ void GLGizmosManager::do_render_overlay() const
    for (size_t idx : selectable_idxs)
    {
        GLGizmoBase* gizmo = m_gizmos[idx].get();
        unsigned int sprite_id = gizmo->get_sprite_id();
-        int icon_idx = (m_current == idx) ? 2 : ((m_hover == idx) ? 1 : (gizmo->is_activable()? 0 : 3));
+        // higlighted state needs to be decided first so its highlighting in every other state
        int icon_idx = (m_highlight.first == idx ? (m_highlight.second ? 4 : 5) : (m_current == idx) ? 2 : ((m_hover == idx) ? 1 : (gizmo->is_activable()? 0 : 3)));
        float v_top = v_offset + sprite_id * dv;
        float u_left = u_offset + icon_idx * du;
@ -1055,6 +1113,19 @@ GLGizmoBase* GLGizmosManager::get_current() const
    return ((m_current == Undefined) || m_gizmos.empty()) ? nullptr : m_gizmos[m_current].get();
 }
 GLGizmosManager::EType GLGizmosManager::get_gizmo_from_name(const std::string& gizmo_name) const
 {
    std::vector<size_t> selectable_idxs = get_selectable_idxs();
    for (size_t idx = 0; idx < selectable_idxs.size(); ++idx)
    {
        std::string filename = m_gizmos[selectable_idxs[idx]]->get_icon_filename();
        filename = filename.substr(0, filename.find_first_of('.'));
        if (filename == gizmo_name)
            return (GLGizmosManager::EType)selectable_idxs[idx];
    }
    return GLGizmosManager::EType::Undefined;
 }
 bool GLGizmosManager::generate_icons_texture() const
 {
    std::string path = resources_dir() + "/icons/";
@ -1074,6 +1145,8 @@ bool GLGizmosManager::generate_icons_texture() const
    states.push_back(std::make_pair(0, false)); // Hovered
    states.push_back(std::make_pair(0, true));  // Selected
    states.push_back(std::make_pair(2, false)); // Disabled
    states.push_back(std::make_pair(0, false)); // HighlightedShown
    states.push_back(std::make_pair(2, false)); // HighlightedHidden
    unsigned int sprite_size_px = (unsigned int)m_layout.scaled_icons_size();
 //    // force even size
--- a/src/slic3r/GUI/Gizmos/GLGizmosManager.hpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmosManager.hpp
@ -94,9 +94,11 @@ private:
    mutable GLTexture m_icons_texture;
    mutable bool m_icons_texture_dirty;
    BackgroundTexture m_background_texture;
    BackgroundTexture m_arrow_texture;
    Layout m_layout;
    EType m_current;
    EType m_hover;
    std::pair<EType, bool> m_highlight; // bool true = higlightedShown, false = highlightedHidden
    std::vector<size_t> get_selectable_idxs() const;
    std::vector<size_t> get_activable_idxs() const;
@ -128,6 +130,8 @@ public:
    bool init();
    bool init_arrow(const BackgroundTexture::Metadata& arrow_texture);
    template<class Archive>
    void load(Archive& ar)
    {
@ -182,6 +186,7 @@ public:
    EType get_current_type() const { return m_current; }
    GLGizmoBase* get_current() const;
    EType get_gizmo_from_name(const std::string& gizmo_name) const;
    bool is_running() const;
    bool handle_shortcut(int key);
@ -220,6 +225,8 @@ public:
    void render_overlay() const;
    void render_arrow(const GLCanvas3D& parent, EType highlighted_type) const;
    std::string get_tooltip() const;
    bool on_mouse(wxMouseEvent& evt);
@ -232,8 +239,13 @@ public:
    int get_selectable_icons_cnt() const { return get_selectable_idxs().size(); }
    int get_shortcut_key(GLGizmosManager::EType) const;
    // To end highlight set gizmo = undefined
    void set_highlight(EType gizmo, bool highlight_shown) { m_highlight = std::pair<EType, bool>(gizmo, highlight_shown); }
    bool get_highlight_state() const { return m_highlight.second; }
 private:
    void render_background(float left, float top, float right, float bottom, float border) const;
    void do_render_overlay() const;
    float get_scaled_total_height() const;
--- a/src/slic3r/GUI/HintNotification.cpp
+++ b/src/slic3r/GUI/HintNotification.cpp
@ -0,0 +1,671 @@
 #include "HintNotification.hpp"
 #include "ImGuiWrapper.hpp"
 #include "format.hpp"
 #include "I18N.hpp"
 #include "GUI_ObjectList.hpp"
 #include "libslic3r/AppConfig.hpp"
 #include "libslic3r/Utils.hpp"
 #include "libslic3r/Config.hpp"
 #include "libslic3r/PresetBundle.hpp"
 #include <boost/filesystem.hpp>
 #include <boost/property_tree/ini_parser.hpp>
 #include <map>
 namespace Slic3r {
 namespace GUI {
 const std::string BOLD_MARKER_START      = "<b>"; 
 const std::string BOLD_MARKER_END        = "</b>";
 const std::string HYPERTEXT_MARKER_START = "<a>";
 const std::string HYPERTEXT_MARKER_END   = "</a>";
 namespace {
 inline void push_style_color(ImGuiCol idx, const ImVec4& col, bool fading_out, float current_fade_opacity)
 {
 	if (fading_out)
 		ImGui::PushStyleColor(idx, ImVec4(col.x, col.y, col.z, col.w * current_fade_opacity));
 	else
 		ImGui::PushStyleColor(idx, col);
 }
 // return true if NOT in disabled mode.
 inline bool disabled_modes_check(const std::string& disabled_modes)
 {
 	if (disabled_modes.empty())
 		return true;
 	// simple / advanced / expert
 	ConfigOptionMode config_mode = wxGetApp().get_mode();
 	std::string		 mode_name;
 	if      (config_mode == ConfigOptionMode::comSimple)   mode_name = "simple";
 	else if (config_mode == ConfigOptionMode::comAdvanced) mode_name = "advanced";
 	else if (config_mode == ConfigOptionMode::comExpert)   mode_name = "expert";
 	if (!mode_name.empty() && disabled_modes.find(mode_name) != std::string::npos)
 		return false;
 	// fff / sla
 	const PrinterTechnology tech = wxGetApp().preset_bundle->printers.get_edited_preset().printer_technology();
 	if (tech == ptFFF) {
 		if (disabled_modes.find("FFF") != std::string::npos)
 			return false;
 	} else {
 		if (disabled_modes.find("SLA") != std::string::npos)
 			return false;
 	} 
 	return true;
 }
 } //namespace
 void HintDatabase::init()
 {
 	load_hints_from_file(std::move(boost::filesystem::path(resources_dir()) / "data" / "hints.ini"));
 	const AppConfig* app_config = wxGetApp().app_config;
 	m_hint_id = std::atoi(app_config->get("last_hint").c_str());
    m_initialized = true;
 }
 void HintDatabase::load_hints_from_file(const boost::filesystem::path& path)
 {
 	namespace pt = boost::property_tree;
 	pt::ptree tree;
 	boost::nowide::ifstream ifs(path.string());
 	try {
 		pt::read_ini(ifs, tree);
 	}
 	catch (const boost::property_tree::ini_parser::ini_parser_error& err) {
 		throw Slic3r::RuntimeError(format("Failed loading hints file \"%1%\"\nError: \"%2%\" at line %3%", path, err.message(), err.line()).c_str());
 	}
 	for (const auto& section : tree) {
 		if (boost::starts_with(section.first, "hint:")) {
 			// create std::map with tree data 
 			std::map<std::string, std::string> dict;
 			for (const auto& data : section.second) {
 				dict.emplace(data.first, data.second.data());
 			}
 			//unescaping a translating all texts
 			//unescape text1
 			std::string fulltext;
 			std::string text1;
 			std::string hypertext_text;
 			std::string follow_text;
 			std::string disabled_modes;
 			unescape_string_cstyle(_utf8(dict["text"]), fulltext);
 			// replace <b> and </b> for imgui markers
 			std::string marker_s(1, ImGui::ColorMarkerStart);
 			std::string marker_e(1, ImGui::ColorMarkerEnd);
 			// start marker
 			size_t marker_pos = fulltext.find(BOLD_MARKER_START);
 			while (marker_pos != std::string::npos) {
 				fulltext.replace(marker_pos, 3, marker_s);
 				marker_pos = fulltext.find(BOLD_MARKER_START, marker_pos);
 			}
 			// end marker
 			marker_pos = fulltext.find(BOLD_MARKER_END);
 			while (marker_pos != std::string::npos) {
 				fulltext.replace(marker_pos, 4, marker_e);
 				marker_pos = fulltext.find(BOLD_MARKER_END, marker_pos);
 			}
 			// divide fulltext
 			size_t hypertext_start = fulltext.find(HYPERTEXT_MARKER_START);
 			if (hypertext_start != std::string::npos) {
 				//hypertext exists
 				fulltext.erase(hypertext_start, HYPERTEXT_MARKER_START.size());
 				if (fulltext.find(HYPERTEXT_MARKER_START) != std::string::npos) {
 					// This must not happen - only 1 hypertext allowed
 					BOOST_LOG_TRIVIAL(error) << "Hint notification with multiple hypertexts: " << _utf8(dict["text"]);
 					continue;
 				}
 				size_t hypertext_end = fulltext.find(HYPERTEXT_MARKER_END);
 				if (hypertext_end == std::string::npos) {
 					// hypertext was not correctly ended
 					BOOST_LOG_TRIVIAL(error) << "Hint notification without hypertext end marker: " << _utf8(dict["text"]);
 					continue;
 				}
 				fulltext.erase(hypertext_end, HYPERTEXT_MARKER_END.size());
 				if (fulltext.find(HYPERTEXT_MARKER_END) != std::string::npos) {
 					// This must not happen - only 1 hypertext end allowed
 					BOOST_LOG_TRIVIAL(error) << "Hint notification with multiple hypertext end markers: " << _utf8(dict["text"]);
 					continue;
 				}
 				text1          = fulltext.substr(0, hypertext_start);
 				hypertext_text = fulltext.substr(hypertext_start, hypertext_end - hypertext_start);
 				follow_text    = fulltext.substr(hypertext_end);
 			} else {
 				text1 = fulltext;
 			}
 			if (dict.find("disabled_modes") != dict.end()) {
 				disabled_modes = dict["disabled_modes"];
 			}
 			// create HintData
 			if (dict.find("hypertext_type") != dict.end()) {
 				//link to internet
 				if(dict["hypertext_type"] == "link") {
 					std::string	hypertext_link = dict["hypertext_link"];
 					HintData	hint_data{ text1, hypertext_text, follow_text, disabled_modes, false, [hypertext_link]() { wxLaunchDefaultBrowser(hypertext_link); }  };
 					m_loaded_hints.emplace_back(hint_data);
 				// highlight settings
 				} else if (dict["hypertext_type"] == "settings") {
 					std::string		opt = dict["hypertext_settings_opt"];
 					Preset::Type	type = static_cast<Preset::Type>(std::atoi(dict["hypertext_settings_type"].c_str()));
 					std::wstring	category = boost::nowide::widen(dict["hypertext_settings_category"]);
 					HintData		hint_data{ text1, hypertext_text, follow_text, disabled_modes, true, [opt, type, category]() { GUI::wxGetApp().sidebar().jump_to_option(opt, type, category); } };
 					m_loaded_hints.emplace_back(hint_data);
 				// open preferences
 				} else if(dict["hypertext_type"] == "preferences") {
 					int			page = static_cast<Preset::Type>(std::atoi(dict["hypertext_preferences_page"].c_str()));
 					HintData	hint_data{ text1, hypertext_text, follow_text, disabled_modes, false, [page]() { wxGetApp().open_preferences(page); } };
 					m_loaded_hints.emplace_back(hint_data);
 				} else if (dict["hypertext_type"] == "plater") {
 					std::string	item = dict["hypertext_plater_item"];
 					HintData	hint_data{ text1, hypertext_text, follow_text, disabled_modes, true, [item]() { wxGetApp().plater()->canvas3D()->highlight_toolbar_item(item); } };
 					m_loaded_hints.emplace_back(hint_data);
 				} else if (dict["hypertext_type"] == "gizmo") {
 					std::string	item = dict["hypertext_gizmo_item"];
 					HintData	hint_data{ text1, hypertext_text, follow_text, disabled_modes, true, [item]() { wxGetApp().plater()->canvas3D()->highlight_gizmo(item); } };
 					m_loaded_hints.emplace_back(hint_data);
 				}
 				else if (dict["hypertext_type"] == "gallery") {
 					HintData	hint_data{ text1, hypertext_text, follow_text, disabled_modes, false, []() {  wxGetApp().obj_list()->load_shape_object_from_gallery(); } };
 					m_loaded_hints.emplace_back(hint_data);
 				}
 			} else {
 				// plain text without hypertext
 				HintData hint_data{ text1 };
 				m_loaded_hints.emplace_back(hint_data);
 			}
 		}
 	}
 }
 HintData* HintDatabase::get_hint(bool up)
 {
    if (! m_initialized) {
        init();
        //return false;
    }
    // shift id
    m_hint_id = (up ? m_hint_id + 1 : (m_hint_id == 0 ? m_loaded_hints.size() - 1 : m_hint_id - 1));
    m_hint_id %= m_loaded_hints.size();
 	AppConfig* app_config = wxGetApp().app_config;
 	app_config->set("last_hint", std::to_string(m_hint_id));
 	//data = &m_loaded_hints[m_hint_id];
 	/*
    data.text = m_loaded_hints[m_hint_id].text;
    data.hypertext = m_loaded_hints[m_hint_id].hypertext;
 	data.follow_text = m_loaded_hints[m_hint_id].follow_text;
    data.callback = m_loaded_hints[m_hint_id].callback;
 	*/
    return &m_loaded_hints[m_hint_id];
 }
 void NotificationManager::HintNotification::count_spaces()
 {
 	//determine line width 
 	m_line_height = ImGui::CalcTextSize("A").y;
 	std::string text;
 	text = ImGui::LeftArrowButton; // TODO change to left arrow 
 	float picture_width = ImGui::CalcTextSize(text.c_str()).x;
 	m_left_indentation = picture_width + m_line_height / 2;
 	// no left button picture
 	//m_left_indentation = m_line_height;
 	m_window_width_offset = m_left_indentation + m_line_height * 3.f;// 5.5f; // no right arrow
 	m_window_width = m_line_height * 25;
 }
 void NotificationManager::HintNotification::count_lines()
 {
 	std::string text = m_text1;
 	size_t      last_end = 0;
 	m_lines_count = 0;
 	if (text.empty())
 		return;
 	m_endlines.clear();
 	while (last_end < text.length() - 1)
 	{
 		size_t next_hard_end = text.find_first_of('\n', last_end);
 		if (next_hard_end != std::string::npos && ImGui::CalcTextSize(text.substr(last_end, next_hard_end - last_end).c_str()).x < m_window_width - m_window_width_offset) {
 			//next line is ended by '/n'
 			m_endlines.push_back(next_hard_end);
 			last_end = next_hard_end + 1;
 		}
 		else {
 			// find next suitable endline
 			if (ImGui::CalcTextSize(text.substr(last_end).c_str()).x >= m_window_width - m_window_width_offset) {
 				// more than one line till end
 				size_t next_space = text.find_first_of(' ', last_end);
 				if (next_space > 0 && next_space < text.length()) {
 					size_t next_space_candidate = text.find_first_of(' ', next_space + 1);
 					while (next_space_candidate > 0 && ImGui::CalcTextSize(text.substr(last_end, next_space_candidate - last_end).c_str()).x < m_window_width - m_window_width_offset) {
 						next_space = next_space_candidate;
 						next_space_candidate = text.find_first_of(' ', next_space + 1);
 					}
 				} else {
 					next_space = text.length();
 				}
 				// when one word longer than line.
 				if (ImGui::CalcTextSize(text.substr(last_end, next_space - last_end).c_str()).x > m_window_width - m_window_width_offset ||
 					ImGui::CalcTextSize(text.substr(last_end, next_space - last_end).c_str()).x < (m_window_width - m_window_width_offset) / 4 * 3
 				    ) {
 					float width_of_a = ImGui::CalcTextSize("a").x;
 					int letter_count = (int)((m_window_width - m_window_width_offset) / width_of_a);
 					while (last_end + letter_count < text.size() && ImGui::CalcTextSize(text.substr(last_end, letter_count).c_str()).x < m_window_width - m_window_width_offset) {
 						letter_count++;
 					}
 					m_endlines.push_back(last_end + letter_count);
 					last_end += letter_count;
 				} else {
 					m_endlines.push_back(next_space);
 					last_end = next_space + 1;
 				}
 			}
 			else {
 				m_endlines.push_back(text.length());
 				last_end = text.length();
 			}
 		}
 		m_lines_count++;
 	}
 	int prev_end = m_endlines.size() > 1 ? m_endlines[m_endlines.size() - 2] : 0;
 	int size_of_last_line = ImGui::CalcTextSize(text.substr(prev_end, last_end - prev_end).c_str()).x;
 	// hypertext calculation
 	if (!m_hypertext.empty()) {
 		if (size_of_last_line + ImGui::CalcTextSize(m_hypertext.c_str()).x > m_window_width - m_window_width_offset) {
 			// hypertext on new line
 			size_of_last_line = ImGui::CalcTextSize((m_hypertext + "  ").c_str()).x;
 			m_endlines.push_back(last_end);
 			m_lines_count++;
 		} else {
 			size_of_last_line += ImGui::CalcTextSize((m_hypertext + "  ").c_str()).x;
 		}
 	}
 	if (!m_text2.empty()) {
 		text						= m_text2;
 		last_end					= 0;
 		m_endlines2.clear();
 		// if size_of_last_line too large to fit anything
 		size_t first_end = std::min(text.find_first_of('\n'), text.find_first_of(' '));
 		if (size_of_last_line >= m_window_width - m_window_width_offset - ImGui::CalcTextSize(text.substr(0, first_end).c_str()).x) {
 			m_endlines2.push_back(0);
 			size_of_last_line = 0;
 		}
 		while (last_end < text.length() - 1)
 		{
 			size_t next_hard_end = text.find_first_of('\n', last_end);
 			if (next_hard_end != std::string::npos && ImGui::CalcTextSize(text.substr(last_end, next_hard_end - last_end).c_str()).x < m_window_width - m_window_width_offset - size_of_last_line) {
 				//next line is ended by '/n'
 				m_endlines2.push_back(next_hard_end);
 				last_end = next_hard_end + 1;
 			}
 			else {
 				// find next suitable endline
 				if (ImGui::CalcTextSize(text.substr(last_end).c_str()).x >= m_window_width - m_window_width_offset - size_of_last_line) {
 					// more than one line till end
 					size_t next_space = text.find_first_of(' ', last_end);
 					if (next_space > 0) {
 						size_t next_space_candidate = text.find_first_of(' ', next_space + 1);
 						while (next_space_candidate > 0 && ImGui::CalcTextSize(text.substr(last_end, next_space_candidate - last_end).c_str()).x < m_window_width - m_window_width_offset - size_of_last_line) {
 							next_space = next_space_candidate;
 							next_space_candidate = text.find_first_of(' ', next_space + 1);
 						}
 					}
 					else {
 						next_space = text.length();
 					}
 					// when one word longer than line.
 					if (ImGui::CalcTextSize(text.substr(last_end, next_space - last_end).c_str()).x > m_window_width - m_window_width_offset - size_of_last_line ||
 						ImGui::CalcTextSize(text.substr(last_end, next_space - last_end).c_str()).x + size_of_last_line < (m_window_width - m_window_width_offset) / 4 * 3
 						) {
 						float width_of_a = ImGui::CalcTextSize("a").x;
 						int letter_count = (int)((m_window_width - m_window_width_offset - size_of_last_line) / width_of_a);
 						while (last_end + letter_count < text.size() && ImGui::CalcTextSize(text.substr(last_end, letter_count).c_str()).x < m_window_width - m_window_width_offset - size_of_last_line) {
 							letter_count++;
 						}
 						m_endlines2.push_back(last_end + letter_count);
 						last_end += letter_count;
 					}
 					else {
 						m_endlines2.push_back(next_space);
 						last_end = next_space + 1;
 					}
 				}
 				else {
 					m_endlines2.push_back(text.length());
 					last_end = text.length();
 				}
 			}
 			if (size_of_last_line == 0) // if first line is continuation of previous text, do not add to line count.
 				m_lines_count++;
 			size_of_last_line = 0; // should countain value only for first line (with hypertext) 
 		}
 	}
 }
 void NotificationManager::HintNotification::init()
 {
 	// Do not init closing notification
 	if (is_finished())
 		return;
 	count_spaces();
 	count_lines();
 	m_multiline = true;
 	m_notification_start = GLCanvas3D::timestamp_now();
 	if (m_state == EState::Unknown)
 		m_state = EState::Shown;
 }
 void NotificationManager::HintNotification::set_next_window_size(ImGuiWrapper& imgui)
 {
 	/*
 	m_window_height = m_multiline ?
 		(m_lines_count + 1.f) * m_line_height :
 		4.f * m_line_height;
 	m_window_height += 1 * m_line_height; // top and bottom
 	*/
 	m_window_height = std::max((m_lines_count + 1.f) * m_line_height, 4.f * m_line_height);
 }
 bool NotificationManager::HintNotification::on_text_click()
 {
 	if (m_hypertext_callback != nullptr && (!m_runtime_disable || disabled_modes_check(m_disabled_modes)))
 		m_hypertext_callback();
 	return false;
 }
 void NotificationManager::HintNotification::render_text(ImGuiWrapper& imgui, const float win_size_x, const float win_size_y, const float win_pos_x, const float win_pos_y)
 {
    if (!m_has_hint_data) {
        retrieve_data();
 	}
 	float	x_offset = m_left_indentation;
 	int		last_end = 0;
 	float	starting_y = (m_lines_count == 2 ? win_size_y / 2 - m_line_height :(m_lines_count == 1 ? win_size_y / 2 - m_line_height / 2: m_line_height / 2));
 	float	shift_y = m_line_height;
 	std::string line;
 	for (size_t i = 0; i < (m_multiline ? /*m_lines_count*/m_endlines.size() : 2); i++) {
 		line.clear();
 		ImGui::SetCursorPosX(x_offset);
 		ImGui::SetCursorPosY(starting_y + i * shift_y);
 		if (m_endlines.size() > i && m_text1.size() >= m_endlines[i]) {
 			if (i == 1 && m_endlines.size() > 2 && !m_multiline) {
 				// second line with "more" hypertext
 				line = m_text1.substr(m_endlines[0] + (m_text1[m_endlines[0]] == '\n' || m_text1[m_endlines[0]] == ' ' ? 1 : 0), m_endlines[1] - m_endlines[0] - (m_text1[m_endlines[0]] == '\n' || m_text1[m_endlines[0]] == ' ' ? 1 : 0));
 				while (ImGui::CalcTextSize(line.c_str()).x > m_window_width - m_window_width_offset - ImGui::CalcTextSize((".." + _u8L("More")).c_str()).x) {
 					line = line.substr(0, line.length() - 1);
 				}
 				line += "..";
 			} else {
 				// regural line
 				line = m_text1.substr(last_end, m_endlines[i] - last_end);	
 			}
 			// first line is headline
 			if (i == 0) {
 				line = ImGui::ColorMarkerStart + line + ImGui::ColorMarkerEnd;
 			}
 			// Add ImGui::ColorMarkerStart if there is ImGui::ColorMarkerEnd first (start was at prev line)
 			if (line.find_first_of(ImGui::ColorMarkerEnd) < line.find_first_of(ImGui::ColorMarkerStart)) {
 				line = ImGui::ColorMarkerStart + line;
 			}
 			last_end = m_endlines[i];
 			if (m_text1.size() > m_endlines[i])
 				last_end += (m_text1[m_endlines[i]] == '\n' || m_text1[m_endlines[i]] == ' ' ? 1 : 0);
 			imgui.text(line.c_str());
 		}
 	}
 	//hyperlink text
 	if (!m_multiline && m_lines_count > 2) {
 		render_hypertext(imgui, x_offset + ImGui::CalcTextSize((line + " ").c_str()).x, starting_y + shift_y, _u8L("More"), true);
 	} else if (!m_hypertext.empty()) {
 		render_hypertext(imgui, x_offset + ImGui::CalcTextSize((line + (line.empty()? "": " ")).c_str()).x, starting_y + (m_endlines.size() - 1) * shift_y, m_hypertext);
 	}
 	// text2
 	if (!m_text2.empty() && m_multiline) {
 		starting_y += (m_endlines.size() - 1) * shift_y;
 		last_end = 0;
 		for (size_t i = 0; i < (m_multiline ? m_endlines2.size() : 2); i++) {
 			if (i == 0) //first line X is shifted by hypertext
 				ImGui::SetCursorPosX(x_offset + ImGui::CalcTextSize((line + m_hypertext + (line.empty() ? " " : "  ")).c_str()).x);
 			else
 				ImGui::SetCursorPosX(x_offset);
 			ImGui::SetCursorPosY(starting_y + i * shift_y);
 			line.clear();
 			if (m_endlines2.size() > i && m_text2.size() >= m_endlines2[i]) {
 				// regural line
 				line = m_text2.substr(last_end, m_endlines2[i] - last_end);
 				// Add ImGui::ColorMarkerStart if there is ImGui::ColorMarkerEnd first (start was at prev line)
 				if (line.find_first_of(ImGui::ColorMarkerEnd) < line.find_first_of(ImGui::ColorMarkerStart)) {
 					line = ImGui::ColorMarkerStart + line;
 				}
 				last_end = m_endlines2[i];
 				if (m_text2.size() > m_endlines2[i])
 					last_end += (m_text2[m_endlines2[i]] == '\n' || m_text2[m_endlines2[i]] == ' ' ? 1 : 0);
 				imgui.text(line.c_str());
 			}
 		}
 	}
 }
 void NotificationManager::HintNotification::render_close_button(ImGuiWrapper& imgui, const float win_size_x, const float win_size_y, const float win_pos_x, const float win_pos_y)
 {
 	ImVec2 win_size(win_size_x, win_size_y);
 	ImVec2 win_pos(win_pos_x, win_pos_y);
 	ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(.0f, .0f, .0f, .0f));
 	ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4(.0f, .0f, .0f, .0f));
 	push_style_color(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
 	push_style_color(ImGuiCol_TextSelectedBg, ImVec4(0, .75f, .75f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
 	ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4(.0f, .0f, .0f, .0f));
 	std::string button_text;
 	button_text = ImGui::CloseNotifButton;
 	if (ImGui::IsMouseHoveringRect(ImVec2(win_pos.x - win_size.x / 10.f, win_pos.y),
 		ImVec2(win_pos.x, win_pos.y + win_size.y - 2 * m_line_height),
 		true))
 	{
 		button_text = ImGui::CloseNotifHoverButton;
 	}
 	ImVec2 button_pic_size = ImGui::CalcTextSize(button_text.c_str());
 	ImVec2 button_size(button_pic_size.x * 1.25f, button_pic_size.y * 1.25f);
 	m_close_b_w = button_size.y;
 	if (m_lines_count <= 3) {
 		m_close_b_y = win_size.y / 2 - button_size.y * 1.25f;
 		ImGui::SetCursorPosX(win_size.x - m_line_height * 2.75f);
 		ImGui::SetCursorPosY(m_close_b_y);
 	} else {
 		ImGui::SetCursorPosX(win_size.x - m_line_height * 2.75f);
 		ImGui::SetCursorPosY(win_size.y / 2 - button_size.y);
 	}
 	if (imgui.button(button_text.c_str(), button_size.x, button_size.y))
 	{
 		close();
 	}
 	//invisible large button
 	ImGui::SetCursorPosX(win_size.x - m_line_height * 2.35f);
 	ImGui::SetCursorPosY(0);
 	if (imgui.button(" ", m_line_height * 2.125, win_size.y -  2 * m_line_height))
 	{
 		close();
 	}
 	ImGui::PopStyleColor();
 	ImGui::PopStyleColor();
 	ImGui::PopStyleColor();
 	ImGui::PopStyleColor();
 	ImGui::PopStyleColor();
 	render_right_arrow_button(imgui, win_size_x, win_size_y, win_pos_x, win_pos_y);
 	render_logo(imgui, win_size_x, win_size_y, win_pos_x, win_pos_y);
 	render_preferences_button(imgui, win_pos_x, win_pos_y);
 }
 void NotificationManager::HintNotification::render_preferences_button(ImGuiWrapper& imgui, const float win_pos_x, const float win_pos_y)
 {
 	ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(.0f, .0f, .0f, .0f));
 	ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4(.0f, .0f, .0f, .0f));
 	push_style_color(ImGuiCol_ButtonActive, ImGui::GetStyleColorVec4(ImGuiCol_WindowBg), m_state == EState::FadingOut, m_current_fade_opacity);
 	push_style_color(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
 	push_style_color(ImGuiCol_TextSelectedBg, ImVec4(0, .75f, .75f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
 	std::string button_text;
 	button_text = ImGui::PreferencesButton;
 	//hover
 	if (ImGui::IsMouseHoveringRect(ImVec2(win_pos_x - m_window_width / 10.f, win_pos_y + m_window_height - 2 * m_line_height + 1),
 		ImVec2(win_pos_x, win_pos_y + m_window_height),
 		true))
 	{
 		button_text = ImGui::PreferencesHoverButton;
 	}
 	ImVec2 button_pic_size = ImGui::CalcTextSize(button_text.c_str());
 	ImVec2 button_size(button_pic_size.x * 1.25f, button_pic_size.y * 1.25f);
 	ImGui::SetCursorPosX(m_window_width - m_line_height * 1.75f);
 	if (m_lines_count <= 3) {
 		ImGui::SetCursorPosY(m_close_b_y + m_close_b_w / 4.f * 7.f);
 	} else {
 		ImGui::SetCursorPosY(m_window_height - button_size.y - m_close_b_w / 4.f);
 	}
 	if (imgui.button(button_text.c_str(), button_size.x, button_size.y))
 	{
 		wxGetApp().open_preferences(2);
 	}
 	ImGui::PopStyleColor();
 	ImGui::PopStyleColor();
 	ImGui::PopStyleColor();
 	ImGui::PopStyleColor();
 	ImGui::PopStyleColor();
 	// preferences button is in place of minimize button
 	m_minimize_b_visible = true;	
 }
 void NotificationManager::HintNotification::render_right_arrow_button(ImGuiWrapper& imgui, const float win_size_x, const float win_size_y, const float win_pos_x, const float win_pos_y)
 {
 	// Used for debuging
 	ImVec2 win_size(win_size_x, win_size_y);
 	ImVec2 win_pos(win_pos_x, win_pos_y);
 	ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(.0f, .0f, .0f, .0f));
 	ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4(.0f, .0f, .0f, .0f));
 	push_style_color(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
 	push_style_color(ImGuiCol_TextSelectedBg, ImVec4(0, .75f, .75f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
 	ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4(.0f, .0f, .0f, .0f));
 	std::string button_text;
 	button_text = ImGui::RightArrowButton;
 	ImVec2 button_pic_size = ImGui::CalcTextSize(button_text.c_str());
 	ImVec2 button_size(button_pic_size.x * 1.25f, button_pic_size.y * 1.25f);
 	ImGui::SetCursorPosX(m_window_width - m_line_height * 3.f);
 	if (m_lines_count <= 3)
 		ImGui::SetCursorPosY(m_close_b_y + m_close_b_w / 4.f * 7.f);
 	else
 		ImGui::SetCursorPosY(m_window_height - button_size.y - m_close_b_w / 4.f);
 	if (imgui.button(button_text.c_str(), button_size.x * 0.8f, button_size.y * 1.f))
 	{
 		retrieve_data();
 	}
 	ImGui::PopStyleColor();
 	ImGui::PopStyleColor();
 	ImGui::PopStyleColor();
 	ImGui::PopStyleColor();
 	ImGui::PopStyleColor();
 }
 void NotificationManager::HintNotification::render_logo(ImGuiWrapper& imgui, const float win_size_x, const float win_size_y, const float win_pos_x, const float win_pos_y)
 {
 	ImVec2 win_size(win_size_x, win_size_y);
 	ImVec2 win_pos(win_pos_x, win_pos_y);
 	ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(.0f, .0f, .0f, .0f));
 	ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4(.0f, .0f, .0f, .0f));
 	push_style_color(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
 	push_style_color(ImGuiCol_TextSelectedBg, ImVec4(0, .75f, .75f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
 	ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4(.0f, .0f, .0f, .0f));
 	std::string button_text;
 	button_text = ImGui::ErrorMarker;//LeftArrowButton;
 	ImVec2 button_pic_size = ImGui::CalcTextSize(button_text.c_str());
 	ImVec2 button_size(button_pic_size.x * 1.25f, button_pic_size.y * 1.25f);
 	ImGui::SetCursorPosY(win_size.y / 2 - button_size.y);
 	ImGui::SetCursorPosX(0);
 	// shouldnt it render as text?
 	if (imgui.button(button_text.c_str(), button_size.x, button_size.y))
 	{
 	}
 	ImGui::PopStyleColor();
 	ImGui::PopStyleColor();
 	ImGui::PopStyleColor();
 	ImGui::PopStyleColor();
 	ImGui::PopStyleColor();
 }
 void NotificationManager::HintNotification::retrieve_data(size_t recursion_counter)
 {
    HintData* hint_data = HintDatabase::get_instance().get_hint(true);
 	if (hint_data != nullptr && !disabled_modes_check(hint_data->disabled_modes))
 	{
 		// Content for different user - retrieve another
 		size_t count = HintDatabase::get_instance().get_count();
 		if (count < recursion_counter) {
 			BOOST_LOG_TRIVIAL(error) << "Hint notification failed to load data due to recursion counter.";
 		} else {
 			retrieve_data(recursion_counter + 1);
 		}
 		return;
 	}
 	if(hint_data != nullptr)
    {
        NotificationData nd { NotificationType::DidYouKnowHint,
 						      NotificationLevel::RegularNotification,
 							  0,
 						      hint_data->text,
 							  hint_data->hypertext, nullptr,
 							  hint_data->follow_text };
        update(nd);
 		m_hypertext_callback = hint_data->callback;
 		m_disabled_modes = hint_data->disabled_modes;
 		m_runtime_disable = hint_data->runtime_disable;
        m_has_hint_data = true;
    }
 }
 } //namespace Slic3r 
 } //namespace GUI 
--- a/src/slic3r/GUI/HintNotification.hpp
+++ b/src/slic3r/GUI/HintNotification.hpp
@ -0,0 +1,97 @@
 #ifndef slic3r_GUI_HintNotification_hpp_
 #define slic3r_GUI_HintNotification_hpp_
 #include "NotificationManager.hpp"
 namespace Slic3r {
 namespace GUI {
 // Database of hints updatable
 struct HintData
 {
 	std::string        text;
 	std::string        hypertext;
 	std::string		   follow_text;
 	std::string        disabled_modes;
 	bool               runtime_disable; // if true - hyperlink will check before every click if not in disabled mode
 	std::function<void(void)> callback{ nullptr };
 };
 class HintDatabase
 {
 public:
    static HintDatabase& get_instance()
    {
        static HintDatabase    instance; // Guaranteed to be destroyed.
                                         // Instantiated on first use.
        return instance;
    }
 private:
 	HintDatabase()
 		: m_hint_id(0)
 	{}
 public:
 	HintDatabase(HintDatabase const&) = delete;
 	void operator=(HintDatabase const&) = delete;
 	// return true if HintData filled;
 	HintData* get_hint(bool up = true);
 	size_t    get_count() { 
 		if (!m_initialized) 
 			return 0;
 		return m_loaded_hints.size(); 
 	}
 private:
 	void	init();
 	void	load_hints_from_file(const boost::filesystem::path& path);
 	size_t						m_hint_id;
 	bool						m_initialized { false };
 	std::vector<HintData>       m_loaded_hints;
 };
 // Notification class - shows current Hint ("Did you know") 
 class NotificationManager::HintNotification : public NotificationManager::PopNotification
 {
 public:
 	HintNotification(const NotificationData& n, NotificationIDProvider& id_provider, wxEvtHandler* evt_handler)
 		: PopNotification(n, id_provider, evt_handler)
 	{
 		retrieve_data();
 	}
 	virtual void	init() override;
 protected:
 	virtual void	set_next_window_size(ImGuiWrapper& imgui) override;
 	virtual void	count_spaces() override;
 	virtual void	count_lines() override;
 	virtual bool	on_text_click() override;
 	virtual void	render_text(ImGuiWrapper& imgui,
 								const float win_size_x, const float win_size_y,
 								const float win_pos_x, const float win_pos_y) override;
 	virtual void	render_close_button(ImGuiWrapper& imgui,
 								const float win_size_x, const float win_size_y,
 								const float win_pos_x, const float win_pos_y) override;
 	virtual void	render_minimize_button(ImGuiWrapper& imgui,
 								const float win_pos_x, const float win_pos_y) override {}
 	void			render_preferences_button(ImGuiWrapper& imgui,
 								const float win_pos_x, const float win_pos_y);
 	void			render_right_arrow_button(ImGuiWrapper& imgui,
 								const float win_size_x, const float win_size_y,
 								const float win_pos_x, const float win_pos_y);
 	void			render_logo(ImGuiWrapper& imgui,
 								const float win_size_x, const float win_size_y,
 								const float win_pos_x, const float win_pos_y);
 	void			retrieve_data(size_t recursion_counter = 0);
 	bool						m_has_hint_data { false };
 	std::function<void(void)>	m_hypertext_callback;
 	std::string					m_disabled_modes;
 	bool                        m_runtime_disable;
 	float						m_close_b_y { 0 };
 	float						m_close_b_w { 0 };
 };
 } //namespace Slic3r 
 } //namespace GUI 
 #endif //slic3r_GUI_HintNotification_hpp_
--- a/src/slic3r/GUI/ImGuiWrapper.cpp
+++ b/src/slic3r/GUI/ImGuiWrapper.cpp
@ -43,7 +43,11 @@ static const std::map<const char, std::string> font_icons = {
    {ImGui::FilamentIconMarker    , "spool"                         },
    {ImGui::MaterialIconMarker    , "resin"                         },
    {ImGui::MinimalizeButton      , "notification_minimalize"       },
-    {ImGui::MinimalizeHoverButton , "notification_minimalize_hover" }
+    {ImGui::MinimalizeHoverButton , "notification_minimalize_hover" },
    {ImGui::RightArrowButton      , "notification_right"            },
    {ImGui::RightArrowHoverButton , "notification_right_hover"      },
    {ImGui::PreferencesButton      , "notification_preferences"      },
    {ImGui::PreferencesHoverButton , "notification_preferences_hover"},
 };
 static const std::map<const char, std::string> font_icons_large = {
    {ImGui::CloseNotifButton       , "notification_close"            },
@ -54,6 +58,8 @@ static const std::map<const char, std::string> font_icons_large = {
    {ImGui::ErrorMarker            , "notification_error"            },
    {ImGui::CancelButton           , "notification_cancel"           },
    {ImGui::CancelHoverButton      , "notification_cancel_hover"     },
    {ImGui::LeftArrowButton        , "notification_left"             },
    {ImGui::LeftArrowHoverButton   , "notification_left_hover"       },
 };
 const ImVec4 ImGuiWrapper::COL_GREY_DARK         = { 0.333f, 0.333f, 0.333f, 1.0f };
--- a/src/slic3r/GUI/NotificationManager.cpp
+++ b/src/slic3r/GUI/NotificationManager.cpp
@ -1,10 +1,11 @@
 #include "NotificationManager.hpp"
-
+#include "HintNotification.hpp"
 #include "GUI.hpp"
 #include "ImGuiWrapper.hpp"
 #include "PrintHostDialogs.hpp"
 #include "wxExtensions.hpp"
 #include "libslic3r/Config.hpp"
 #include "../Utils/PrintHost.hpp"
 #include "libslic3r/Config.hpp"
@ -30,7 +31,37 @@ wxDEFINE_EVENT(EVT_EJECT_DRIVE_NOTIFICAION_CLICKED, EjectDriveNotificationClicke
 wxDEFINE_EVENT(EVT_EXPORT_GCODE_NOTIFICAION_CLICKED, ExportGcodeNotificationClickedEvent);
 wxDEFINE_EVENT(EVT_PRESET_UPDATE_AVAILABLE_CLICKED, PresetUpdateAvailableClickedEvent);
-namespace Notifications_Internal{
+const NotificationManager::NotificationData NotificationManager::basic_notifications[] = {
 	{NotificationType::Mouse3dDisconnected, NotificationLevel::RegularNotification, 10,  _u8L("3D Mouse disconnected.") },
 	{NotificationType::PresetUpdateAvailable, NotificationLevel::ImportantNotification, 20,  _u8L("Configuration update is available."),  _u8L("See more."),
 		[](wxEvtHandler* evnthndlr) {
 			if (evnthndlr != nullptr)
 				wxPostEvent(evnthndlr, PresetUpdateAvailableClickedEvent(EVT_PRESET_UPDATE_AVAILABLE_CLICKED));
 			return true;
 		}
 	},
 	{NotificationType::NewAppAvailable, NotificationLevel::ImportantNotification, 20,  _u8L("New version is available."),  _u8L("See Releases page."), [](wxEvtHandler* evnthndlr) {
 		wxLaunchDefaultBrowser("https://github.com/prusa3d/PrusaSlicer/releases"); return true; }},
 	{NotificationType::EmptyColorChangeCode, NotificationLevel::RegularNotification, 10,
 		_u8L("You have just added a G-code for color change, but its value is empty.\n"
 			 "To export the G-code correctly, check the \"Color Change G-code\" in \"Printer Settings > Custom G-code\"") },
 	{NotificationType::EmptyAutoColorChange, NotificationLevel::RegularNotification, 10,
 		_u8L("This model doesn't allow to automatically add the color changes") },
 	{NotificationType::DesktopIntegrationSuccess, NotificationLevel::RegularNotification, 10,
 		_u8L("Desktop integration was successful.") },
 	{NotificationType::DesktopIntegrationFail, NotificationLevel::WarningNotification, 10,
 		_u8L("Desktop integration failed.") },
 	{NotificationType::UndoDesktopIntegrationSuccess, NotificationLevel::RegularNotification, 10,
 		_u8L("Undo desktop integration was successful.") },
 	{NotificationType::UndoDesktopIntegrationFail, NotificationLevel::WarningNotification, 10,
 		_u8L("Undo desktop integration failed.") },
 	//{NotificationType::NewAppAvailable, NotificationLevel::ImportantNotification, 20,  _u8L("New vesion of PrusaSlicer is available.",  _u8L("Download page.") },
 	//{NotificationType::LoadingFailed, NotificationLevel::RegularNotification, 20,  _u8L("Loading of model has Failed") },
 	//{NotificationType::DeviceEjected, NotificationLevel::RegularNotification, 10,  _u8L("Removable device has been safely ejected")} // if we want changeble text (like here name of device), we need to do it as CustomNotification
 };
 namespace {
 	/* // not used?
 	ImFont* add_default_font(float pixel_size)
 	{
 		ImGuiIO& io = ImGui::GetIO();
@ -41,8 +72,8 @@ namespace Notifications_Internal{
 		ImFont* font = io.Fonts->AddFontDefault(&config);
 		return font;
 	}
-
+	*/
-	static inline void push_style_color(ImGuiCol idx, const ImVec4& col, bool fading_out, float current_fade_opacity)
+	inline void push_style_color(ImGuiCol idx, const ImVec4& col, bool fading_out, float current_fade_opacity)
 	{
 		if (fading_out)
 			ImGui::PushStyleColor(idx, ImVec4(col.x, col.y, col.z, col.w * current_fade_opacity));
@ -184,8 +215,8 @@ void NotificationManager::PopNotification::render(GLCanvas3D& canvas, float init
 	// color change based on fading out
 	if (m_state == EState::FadingOut) {
-		Notifications_Internal::push_style_color(ImGuiCol_WindowBg, ImGui::GetStyleColorVec4(ImGuiCol_WindowBg), true, m_current_fade_opacity);
+		push_style_color(ImGuiCol_WindowBg, ImGui::GetStyleColorVec4(ImGuiCol_WindowBg), true, m_current_fade_opacity);
-		Notifications_Internal::push_style_color(ImGuiCol_Text, ImGui::GetStyleColorVec4(ImGuiCol_Text), true, m_current_fade_opacity);
+		push_style_color(ImGuiCol_Text, ImGui::GetStyleColorVec4(ImGuiCol_Text), true, m_current_fade_opacity);
 		fading_pop = true;
 	}
@ -219,20 +250,20 @@ bool NotificationManager::PopNotification::push_background_color()
 {
 	if (m_is_gray) {
 		ImVec4 backcolor(0.7f, 0.7f, 0.7f, 0.5f);
-		Notifications_Internal::push_style_color(ImGuiCol_WindowBg, backcolor, m_state == EState::FadingOut, m_current_fade_opacity);
+		push_style_color(ImGuiCol_WindowBg, backcolor, m_state == EState::FadingOut, m_current_fade_opacity);
 		return true;
 	}
 	if (m_data.level == NotificationLevel::ErrorNotification) {
 		ImVec4 backcolor = ImGui::GetStyleColorVec4(ImGuiCol_WindowBg);
 		backcolor.x += 0.3f;
-		Notifications_Internal::push_style_color(ImGuiCol_WindowBg, backcolor, m_state == EState::FadingOut, m_current_fade_opacity);
+		push_style_color(ImGuiCol_WindowBg, backcolor, m_state == EState::FadingOut, m_current_fade_opacity);
 		return true;
 	}
 	if (m_data.level == NotificationLevel::WarningNotification) {
 		ImVec4 backcolor = ImGui::GetStyleColorVec4(ImGuiCol_WindowBg);
 		backcolor.x += 0.3f;
 		backcolor.y += 0.15f;
-		Notifications_Internal::push_style_color(ImGuiCol_WindowBg, backcolor, m_state == EState::FadingOut, m_current_fade_opacity);
+		push_style_color(ImGuiCol_WindowBg, backcolor, m_state == EState::FadingOut, m_current_fade_opacity);
 		return true;
 	}
 	return false;
@ -259,6 +290,9 @@ void NotificationManager::PopNotification::count_lines()
 	size_t      last_end	= 0;
 	m_lines_count			= 0;
 	if (text.empty())
 		return;
 	m_endlines.clear();
 	while (last_end < text.length() - 1)
 	{
@ -283,7 +317,9 @@ void NotificationManager::PopNotification::count_lines()
 					next_space = text.length();
 				}
 				// when one word longer than line.
-				if (ImGui::CalcTextSize(text.substr(last_end, next_space - last_end).c_str()).x > m_window_width - m_window_width_offset) {
+				if (ImGui::CalcTextSize(text.substr(last_end, next_space - last_end).c_str()).x > m_window_width - m_window_width_offset ||
 					ImGui::CalcTextSize(text.substr(last_end, next_space - last_end).c_str()).x < (m_window_width - m_window_width_offset) / 4 * 3
 					) {
 					float width_of_a = ImGui::CalcTextSize("a").x;
 					int letter_count = (int)((m_window_width - m_window_width_offset) / width_of_a);
 					while (last_end + letter_count < text.size() && ImGui::CalcTextSize(text.substr(last_end, letter_count).c_str()).x < m_window_width - m_window_width_offset) {
@ -312,6 +348,9 @@ void NotificationManager::PopNotification::count_lines()
 			m_lines_count++;
 		}
 	}
 	// m_text_2 (text after hypertext) is not used for regular notifications right now.
 	// its caluculation is in HintNotification::count_lines()
 }
 void NotificationManager::PopNotification::init()
@ -339,27 +378,29 @@ void NotificationManager::PopNotification::set_next_window_size(ImGuiWrapper& im
 void NotificationManager::PopNotification::render_text(ImGuiWrapper& imgui, const float win_size_x, const float win_size_y, const float win_pos_x, const float win_pos_y)
 {
 	ImVec2      win_size(win_size_x, win_size_y);
 	float	x_offset = m_left_indentation;
 	std::string fulltext = m_text1 + m_hypertext; //+ m_text2;
 	ImVec2      text_size = ImGui::CalcTextSize(fulltext.c_str());
 	// text posistions are calculated by lines count
 	// large texts has "more" button or are displayed whole
 	// smaller texts are divided as one liners and two liners
 	if (m_lines_count > 2) {
 		if (m_multiline) {
 	int		last_end = 0;
-			float starting_y = m_line_height/2;
+	float	starting_y = (m_lines_count == 2 ? win_size_y / 2 - m_line_height : (m_lines_count == 1 ? win_size_y / 2 - m_line_height / 2 : m_line_height / 2));
 	float	shift_y = m_line_height;
 	std::string line;
-			for (size_t i = 0; i < m_lines_count; i++) {
+	for (size_t i = 0; i < (m_multiline ? m_endlines.size() : std::min(m_endlines.size(), (size_t)2)); i++) {
 		line.clear();
 		ImGui::SetCursorPosX(x_offset);     
 		ImGui::SetCursorPosY(starting_y + i * shift_y);
 		if (m_endlines.size() > i && m_text1.size() >= m_endlines[i]) {
 			if (i == 1 && m_endlines.size() > 2 && !m_multiline) {
 				// second line with "more" hypertext
 				line = m_text1.substr(m_endlines[0] + (m_text1[m_endlines[0]] == '\n' || m_text1[m_endlines[0]] == ' ' ? 1 : 0), m_endlines[1] - m_endlines[0] - (m_text1[m_endlines[0]] == '\n' || m_text1[m_endlines[0]] == ' ' ? 1 : 0));
 				while (ImGui::CalcTextSize(line.c_str()).x > m_window_width - m_window_width_offset - ImGui::CalcTextSize((".." + _u8L("More")).c_str()).x) {
 					line = line.substr(0, line.length() - 1);
 				}
 				line += "..";
 			}
 			else {
 				// regural line
 				line = m_text1.substr(last_end, m_endlines[i] - last_end);
 			}
 			last_end = m_endlines[i];
 			if (m_text1.size() > m_endlines[i])
 				last_end += (m_text1[m_endlines[i]] == '\n' || m_text1[m_endlines[i]] == ' ' ? 1 : 0);
@ -367,77 +408,15 @@ void NotificationManager::PopNotification::render_text(ImGuiWrapper& imgui, cons
 		}
 	}
 	//hyperlink text
-			if (!m_hypertext.empty()) {
+	if (!m_multiline && m_lines_count > 2) {
-				render_hypertext(imgui, x_offset + ImGui::CalcTextSize((line + (line.empty() ? "" : " ")).c_str()).x, starting_y + (m_lines_count - 1) * shift_y, m_hypertext);
+		render_hypertext(imgui, x_offset + ImGui::CalcTextSize((line + " ").c_str()).x, starting_y + shift_y, _u8L("More"), true);
 	}
 	else if (!m_hypertext.empty()) {
 		render_hypertext(imgui, x_offset + ImGui::CalcTextSize((line + (line.empty() ? "" : " ")).c_str()).x, starting_y + (m_endlines.size() - 1) * shift_y, m_hypertext);
 	}
-			
+	// text2 (text after hypertext) is not rendered for regular notifications
-		} else {
+	// its rendering is in HintNotification::render_text
 			// line1
 			if (m_text1.size() >= m_endlines[0]) {
 				ImGui::SetCursorPosX(x_offset);
 				ImGui::SetCursorPosY(win_size.y / 2 - win_size.y / 6 - m_line_height / 2);
 				imgui.text(m_text1.substr(0, m_endlines[0]).c_str());
 			}
 			// line2
 			std::string line;
 			ImGui::SetCursorPosX(x_offset);
 			ImGui::SetCursorPosY(win_size.y / 2 + win_size.y / 6 - m_line_height / 2);
 			if (m_text1.size() >= m_endlines[1]) {
 				line = m_text1.substr(m_endlines[0] + (m_text1[m_endlines[0]] == '\n' || m_text1[m_endlines[0]] == ' ' ? 1 : 0), m_endlines[1] - m_endlines[0] - (m_text1[m_endlines[0]] == '\n' || m_text1[m_endlines[0]] == ' ' ? 1 : 0));
 				if (ImGui::CalcTextSize(line.c_str()).x > m_window_width - m_window_width_offset - ImGui::CalcTextSize((".." + _u8L("More")).c_str()).x) {
 					line = line.substr(0, line.length() - 6);
 					line += "..";
 				} else
 					line += "  ";
 				imgui.text(line.c_str());
 			}
 			// "More" hypertext
 			render_hypertext(imgui, x_offset + ImGui::CalcTextSize(line.c_str()).x, win_size.y / 2 + win_size.y / 6 - m_line_height / 2, _u8L("More"), true);			
 		}
 	} else {
 		//text 1
 		float cursor_y = win_size.y / 2 - text_size.y / 2;
 		float cursor_x = x_offset;
 		if(m_lines_count > 1) {
 			// line1
 			if (m_text1.length() >= m_endlines[0]) { // could be equal than substr takes whole string
 				ImGui::SetCursorPosX(x_offset);
 				ImGui::SetCursorPosY(win_size.y / 2 - win_size.y / 6 - m_line_height / 2);
 				imgui.text(m_text1.substr(0, m_endlines[0]).c_str());
 			}
 			// line2
 			ImGui::SetCursorPosX(x_offset);
 			cursor_y = win_size.y / 2 + win_size.y / 6 - m_line_height / 2;
 			ImGui::SetCursorPosY(cursor_y);
 			if (m_text1.length() > m_endlines[0]) { // must be greater otherwise theres nothing to show and m_text1[m_endlines[0]] is beyond last letter
 				std::string line = m_text1.substr(m_endlines[0] + (m_text1[m_endlines[0]] == '\n' || m_text1[m_endlines[0]] == ' ' ? 1 : 0));
 				imgui.text(line.c_str());
 				cursor_x = x_offset + ImGui::CalcTextSize(line.c_str()).x;
 			}
 		} else {
 			ImGui::SetCursorPosX(x_offset);
 			ImGui::SetCursorPosY(cursor_y);
 			imgui.text(m_text1.c_str());
 			cursor_x = x_offset + ImGui::CalcTextSize(m_text1.c_str()).x;
 		}
 		//hyperlink text
 		if (!m_hypertext.empty()) {
 			render_hypertext(imgui, cursor_x + 4, cursor_y, m_hypertext);
 		}
 		//notification text 2
 		//text 2 is suposed to be after the hyperlink - currently it is not used
 		/*
 		if (!m_text2.empty())
 		{
 			ImVec2 part_size = ImGui::CalcTextSize(m_hypertext.c_str());
 			ImGui::SetCursorPosX(win_size.x / 2 + text_size.x / 2 - part_size.x + 8 - x_offset);
 			ImGui::SetCursorPosY(cursor_y);
 			imgui.text(m_text2.c_str());
 		}
 		*/
 	}
 }
 void NotificationManager::PopNotification::render_hypertext(ImGuiWrapper& imgui, const float text_x, const float text_y, const std::string text, bool more)
@ -470,7 +449,7 @@ void NotificationManager::PopNotification::render_hypertext(ImGuiWrapper& imgui,
 		orange_color.y += 0.2f;
 	//text
-	Notifications_Internal::push_style_color(ImGuiCol_Text, orange_color, m_state == EState::FadingOut, m_current_fade_opacity);
+	push_style_color(ImGuiCol_Text, orange_color, m_state == EState::FadingOut, m_current_fade_opacity);
 	ImGui::SetCursorPosX(text_x);
 	ImGui::SetCursorPosY(text_y);
 	imgui.text(text.c_str());
@ -491,8 +470,8 @@ void NotificationManager::PopNotification::render_close_button(ImGuiWrapper& img
 	ImVec2 win_pos(win_pos_x, win_pos_y); 
 	ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(.0f, .0f, .0f, .0f));
 	ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4(.0f, .0f, .0f, .0f));
-	Notifications_Internal::push_style_color(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
+	push_style_color(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
-	Notifications_Internal::push_style_color(ImGuiCol_TextSelectedBg, ImVec4(0, .75f, .75f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
+	push_style_color(ImGuiCol_TextSelectedBg, ImVec4(0, .75f, .75f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
 	ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4(.0f, .0f, .0f, .0f));
@ -542,9 +521,9 @@ void NotificationManager::PopNotification::render_minimize_button(ImGuiWrapper&
 {
 	ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(.0f, .0f, .0f, .0f));
 	ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4(.0f, .0f, .0f, .0f));
-	Notifications_Internal::push_style_color(ImGuiCol_ButtonActive, ImGui::GetStyleColorVec4(ImGuiCol_WindowBg), m_state == EState::FadingOut, m_current_fade_opacity);
+	push_style_color(ImGuiCol_ButtonActive, ImGui::GetStyleColorVec4(ImGuiCol_WindowBg), m_state == EState::FadingOut, m_current_fade_opacity);
-	Notifications_Internal::push_style_color(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
+	push_style_color(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
-	Notifications_Internal::push_style_color(ImGuiCol_TextSelectedBg, ImVec4(0, .75f, .75f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
+	push_style_color(ImGuiCol_TextSelectedBg, ImVec4(0, .75f, .75f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
 	//button - if part if treggered
@ -762,8 +741,8 @@ void NotificationManager::ExportFinishedNotification::render_eject_button(ImGuiW
 	ImVec2 win_pos(win_pos_x, win_pos_y);
 	ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(.0f, .0f, .0f, .0f));
 	ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4(.0f, .0f, .0f, .0f));
-	Notifications_Internal::push_style_color(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
+	push_style_color(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
-	Notifications_Internal::push_style_color(ImGuiCol_TextSelectedBg, ImVec4(0, .75f, .75f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
+	push_style_color(ImGuiCol_TextSelectedBg, ImVec4(0, .75f, .75f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
 	ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4(.0f, .0f, .0f, .0f));
 	std::string button_text;
@ -818,7 +797,7 @@ void NotificationManager::ExportFinishedNotification::render_eject_button(ImGuiW
 }
 bool NotificationManager::ExportFinishedNotification::on_text_click()
 {
-	Notifications_Internal::open_folder(m_export_dir_path);
+	open_folder(m_export_dir_path);
 	return false;
 }
 //------ProgressBar----------------
@ -961,7 +940,7 @@ bool NotificationManager::PrintHostUploadNotification::push_background_color()
 	if (m_uj_state == UploadJobState::PB_ERROR) {
 		ImVec4 backcolor = ImGui::GetStyleColorVec4(ImGuiCol_WindowBg);
 		backcolor.x += 0.3f;
-		Notifications_Internal::push_style_color(ImGuiCol_WindowBg, backcolor, m_state == EState::FadingOut, m_current_fade_opacity);
+		push_style_color(ImGuiCol_WindowBg, backcolor, m_state == EState::FadingOut, m_current_fade_opacity);
 		return true;
 	}
 	return false;
@ -1031,8 +1010,8 @@ void NotificationManager::PrintHostUploadNotification::render_cancel_button(ImGu
 	ImVec2 win_pos(win_pos_x, win_pos_y);
 	ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(.0f, .0f, .0f, .0f));
 	ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4(.0f, .0f, .0f, .0f));
-	Notifications_Internal::push_style_color(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
+	push_style_color(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
-	Notifications_Internal::push_style_color(ImGuiCol_TextSelectedBg, ImVec4(0, .75f, .75f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
+	push_style_color(ImGuiCol_TextSelectedBg, ImVec4(0, .75f, .75f, 1.f), m_state == EState::FadingOut, m_current_fade_opacity);
 	ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4(.0f, .0f, .0f, .0f));
 	std::string button_text;
@ -1088,10 +1067,10 @@ NotificationManager::NotificationManager(wxEvtHandler* evt_handler) :
 }
 void NotificationManager::push_notification(const NotificationType type, int timestamp)
 {
-	auto it = std::find_if(basic_notifications.begin(), basic_notifications.end(),
+	auto it = std::find_if(std::begin(basic_notifications), std::end(basic_notifications),
 		boost::bind(&NotificationData::type, boost::placeholders::_1) == type);
-	assert(it != basic_notifications.end());
+	assert(it != std::end(basic_notifications));
-	if (it != basic_notifications.end())
+	if (it != std::end(basic_notifications))
 		push_notification_data(*it, timestamp);
 }
 void NotificationManager::push_notification(const std::string& text, int timestamp)
@ -1331,6 +1310,15 @@ void NotificationManager::upload_job_notification_show_error(int id, const std::
 		}
 	}
 }
 void NotificationManager::push_hint_notification()
 {
 	for (std::unique_ptr<PopNotification>& notification : m_pop_notifications) {
 		if (notification->get_type() == NotificationType::DidYouKnowHint)
 			return;
 	}
 	NotificationData data{ NotificationType::DidYouKnowHint, NotificationLevel::RegularNotification, 0, "" };
 	push_notification_data(std::make_unique<NotificationManager::HintNotification>(data, m_id_provider, m_evt_handler), 0);
 }
 bool NotificationManager::push_notification_data(const NotificationData& notification_data, int timestamp)
 {
 	return push_notification_data(std::make_unique<PopNotification>(notification_data, m_id_provider, m_evt_handler), timestamp);
--- a/src/slic3r/GUI/NotificationManager.hpp
+++ b/src/slic3r/GUI/NotificationManager.hpp
@ -89,8 +89,9 @@ enum class NotificationType
    UndoDesktopIntegrationSuccess,
    UndoDesktopIntegrationFail,
    // Notification that a printer has more extruders than are supported by MM Gizmo/segmentation.
-    MmSegmentationExceededExtrudersLimit
+    MmSegmentationExceededExtrudersLimit,
-
+	// Did you know Notification appearing on startup with arrows to change hint
 	DidYouKnowHint
 };
 class NotificationManager
@ -160,6 +161,8 @@ public:
 	void set_upload_job_notification_percentage(int id, const std::string& filename, const std::string& host, float percentage);
 	void upload_job_notification_show_canceled(int id, const std::string& filename, const std::string& host);
 	void upload_job_notification_show_error(int id, const std::string& filename, const std::string& host);
 	// Hint (did you know) notification
 	void push_hint_notification();
 	// Close old notification ExportFinished.
 	void new_export_began(bool on_removable);
 	// finds ExportFinished notification and closes it if it was to removable device
@ -188,7 +191,7 @@ private:
 		// Callback for hypertext - returns true if notification should close after triggering
 		// Usually sends event to UI thread thru wxEvtHandler.
 		// Examples in basic_notifications.
-		std::function<bool(wxEvtHandler*)> callback { nullptr };
+        std::function<bool(wxEvtHandler*)> callback;
 		const std::string        text2;
 	};
@ -237,7 +240,7 @@ private:
 		//returns top in actual frame
 		float                  get_current_top() const { return m_top_y; }
 		const NotificationType get_type() const { return m_data.type; }
-		const NotificationData get_data() const { return m_data; }
+		const NotificationData& get_data() const { return m_data; }
 		const bool             is_gray() const { return m_is_gray; }
 		void                   set_gray(bool g) { m_is_gray = g; }
 		virtual bool           compare_text(const std::string& text) const;
@ -318,7 +321,10 @@ private:
 		float            m_top_y                { 0.0f };  
 		// Height of text - Used as basic scaling unit!
 		float            m_line_height;
 		// endlines for text1, hypertext excluded
        std::vector<size_t> m_endlines;
 		// endlines for text2
 		std::vector<size_t> m_endlines2;
 		// Gray are f.e. eorrors when its uknown if they are still valid
 		bool             m_is_gray              { false };
 		//if multiline = true, notification is showing all lines(>2)
@ -337,7 +343,7 @@ private:
 		void			set_large(bool l);
 		bool			get_large() { return m_is_large; }
 		void			set_print_info(const std::string &info);
-		virtual void	render(GLCanvas3D& canvas, float initial_y, bool move_from_overlay, float overlay_width) override
+		void			render(GLCanvas3D& canvas, float initial_y, bool move_from_overlay, float overlay_width) override
 		{
 			// This notification is always hidden if !large (means side bar is collapsed)
 			if (!get_large() && !is_finished()) 
@ -345,7 +351,7 @@ private:
 			PopNotification::render(canvas, initial_y, move_from_overlay, overlay_width);
 		}
 	protected:
-		virtual void render_text(ImGuiWrapper& imgui,
+		void render_text(ImGuiWrapper& imgui,
 			                     const float win_size_x, const float win_size_y,
 			                     const float win_pos_x, const float win_pos_y) 
 			                     override;
@ -366,7 +372,7 @@ private:
 	{
 	public:
 		PlaterWarningNotification(const NotificationData& n, NotificationIDProvider& id_provider, wxEvtHandler* evt_handler) : PopNotification(n, id_provider, evt_handler) {}
-		virtual void close()  override { if(is_finished()) return; m_state = EState::Hidden; wxGetApp().plater()->get_current_canvas3D()->schedule_extra_frame(0); }
+		void	     close()  override { if(is_finished()) return; m_state = EState::Hidden; wxGetApp().plater()->get_current_canvas3D()->schedule_extra_frame(0); }
 		void		 real_close()      { m_state = EState::ClosePending; wxGetApp().plater()->get_current_canvas3D()->schedule_extra_frame(0); }
 		void         show()            { m_state = EState::Unknown; }
 	};
@ -392,7 +398,7 @@ private:
 									const float win_size_x, const float win_size_y,
 									const float win_pos_x, const float win_pos_y)
 		{}
-		virtual void render_minimize_button(ImGuiWrapper& imgui,
+		void			render_minimize_button(ImGuiWrapper& imgui,
 			const float win_pos_x, const float win_pos_y) override {}
 		float				m_percentage;
@ -421,22 +427,22 @@ private:
 			m_has_cancel_button = true;
 		}
 		static std::string	get_upload_job_text(int id, const std::string& filename, const std::string& host) { return /*"[" + std::to_string(id) + "] " + */filename + " -> " + host; }
-		virtual void		set_percentage(float percent) override;
+		void				set_percentage(float percent) override;
 		void				cancel() { m_uj_state = UploadJobState::PB_CANCELLED; m_has_cancel_button = false; }
 		void				error()  { m_uj_state = UploadJobState::PB_ERROR;     m_has_cancel_button = false; init(); }
 		bool				compare_job_id(const int other_id) const { return m_job_id == other_id; }
-		virtual bool		compare_text(const std::string& text) const override { return false; }
+		bool				compare_text(const std::string& text) const override { return false; }
 	protected:
-		virtual void        init() override;
+		void        init() override;
-		virtual void count_spaces() override;
+		void		count_spaces() override;
-		virtual bool push_background_color() override;
+		bool		push_background_color() override;
-		virtual void render_bar(ImGuiWrapper& imgui,
+		void		render_bar(ImGuiWrapper& imgui,
 								const float win_size_x, const float win_size_y,
 								const float win_pos_x, const float win_pos_y) override;
-		virtual void render_cancel_button(ImGuiWrapper& imgui,
+		void		render_cancel_button(ImGuiWrapper& imgui,
 											const float win_size_x, const float win_size_y,
 											const float win_pos_x, const float win_pos_y) override;
-		virtual void render_left_sign(ImGuiWrapper& imgui) override;
+		void		render_left_sign(ImGuiWrapper& imgui) override;
 		// Identifies job in cancel callback
 		int					m_job_id;
 		// Size of uploaded size to be displayed in MB
@ -461,24 +467,27 @@ private:
 		std::string m_export_dir_path;
 	protected:
 		// Reserves space on right for more buttons
-		virtual void count_spaces() override;
+		void count_spaces() override;
-		virtual void render_text(ImGuiWrapper& imgui,
+		void render_text(ImGuiWrapper& imgui,
 						 const float win_size_x, const float win_size_y,
 						 const float win_pos_x, const float win_pos_y) override;
 		// Renders also button to open directory with exported path and eject removable media
-		virtual void render_close_button(ImGuiWrapper& imgui,
+		void render_close_button(ImGuiWrapper& imgui,
 								 const float win_size_x, const float win_size_y,
 								 const float win_pos_x, const float win_pos_y) override;
 		void         render_eject_button(ImGuiWrapper& imgui,
 			                             const float win_size_x, const float win_size_y,
 			                             const float win_pos_x, const float win_pos_y);
-		virtual void render_minimize_button(ImGuiWrapper& imgui, const float win_pos_x, const float win_pos_y) override 
+		void render_minimize_button(ImGuiWrapper& imgui, const float win_pos_x, const float win_pos_y) override
 			{ m_minimize_b_visible = false; }
-		virtual bool on_text_click() override; 
+		bool on_text_click() override;
 		// local time of last hover for showing tooltip
 		long      m_hover_time { 0 };
 	};
 	// in HintNotification.hpp
 	class HintNotification;
 	//pushes notification into the queue of notifications that are rendered
 	//can be used to create custom notification
 	bool push_notification_data(const NotificationData& notification_data, int timestamp);
@ -506,34 +515,7 @@ private:
 	// Notification types that can be shown multiple types at once (compared by text)
 	const std::vector<NotificationType> m_multiple_types = { NotificationType::CustomNotification, NotificationType::PlaterWarning, NotificationType::ProgressBar, NotificationType::PrintHostUpload };
 	//prepared (basic) notifications
-	const std::vector<NotificationData> basic_notifications = {
+	static const NotificationData basic_notifications[];
 		{NotificationType::Mouse3dDisconnected, NotificationLevel::RegularNotification, 10,  _u8L("3D Mouse disconnected.") },
        {NotificationType::PresetUpdateAvailable, NotificationLevel::ImportantNotification, 20,  _u8L("Configuration update is available."),  _u8L("See more."),
             [](wxEvtHandler* evnthndlr) {
                 if (evnthndlr != nullptr)
                     wxPostEvent(evnthndlr, PresetUpdateAvailableClickedEvent(EVT_PRESET_UPDATE_AVAILABLE_CLICKED));
                 return true;
             }
        },
 		{NotificationType::NewAppAvailable, NotificationLevel::ImportantNotification, 20,  _u8L("New version is available."),  _u8L("See Releases page."), [](wxEvtHandler* evnthndlr){ 
 				wxLaunchDefaultBrowser("https://github.com/prusa3d/PrusaSlicer/releases"); return true; }},
 		{NotificationType::EmptyColorChangeCode, NotificationLevel::RegularNotification, 10,  
 			_u8L("You have just added a G-code for color change, but its value is empty.\n"
 				 "To export the G-code correctly, check the \"Color Change G-code\" in \"Printer Settings > Custom G-code\"") },
 		{NotificationType::EmptyAutoColorChange, NotificationLevel::RegularNotification, 10,  
 			_u8L("This model doesn't allow to automatically add the color changes") },
 		{NotificationType::DesktopIntegrationSuccess, NotificationLevel::RegularNotification, 10,  
 			_u8L("Desktop integration was successful.") },
 		{NotificationType::DesktopIntegrationFail, NotificationLevel::WarningNotification, 10,  
 			_u8L("Desktop integration failed.") },
 		{NotificationType::UndoDesktopIntegrationSuccess, NotificationLevel::RegularNotification, 10,  
 			_u8L("Undo desktop integration was successful.") },
 		{NotificationType::UndoDesktopIntegrationFail, NotificationLevel::WarningNotification, 10,  
 			_u8L("Undo desktop integration failed.") },
 		//{NotificationType::NewAppAvailable, NotificationLevel::ImportantNotification, 20,  _u8L("New vesion of PrusaSlicer is available.",  _u8L("Download page.") },
 		//{NotificationType::LoadingFailed, NotificationLevel::RegularNotification, 20,  _u8L("Loading of model has Failed") },
 		//{NotificationType::DeviceEjected, NotificationLevel::RegularNotification, 10,  _u8L("Removable device has been safely ejected")} // if we want changeble text (like here name of device), we need to do it as CustomNotification
 	};
 };
 }//namespace GUI
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@ -1045,6 +1045,12 @@ void Sidebar::search()
    p->searcher.search();
 }
 void Sidebar::jump_to_option(const std::string& opt_key, Preset::Type type, const std::wstring& category)
 {
    //const Search::Option& opt = p->searcher.get_option(opt_key, type);
    wxGetApp().get_tab(type)->activate_option(opt_key, category);
 }
 void Sidebar::jump_to_option(size_t selected)
 {
    const Search::Option& opt = p->searcher.get_option(selected);
--- a/src/slic3r/GUI/Plater.hpp
+++ b/src/slic3r/GUI/Plater.hpp
@ -83,6 +83,7 @@ public:
    void sys_color_changed();
    void search();
    void jump_to_option(size_t selected);
    void jump_to_option(const std::string& opt_key, Preset::Type type, const std::wstring& category);
    ObjectManipulation*     obj_manipul();
    ObjectList*             obj_list();
--- a/src/slic3r/GUI/Preferences.cpp
+++ b/src/slic3r/GUI/Preferences.cpp
@ -11,14 +11,14 @@
 namespace Slic3r {
 namespace GUI {
-PreferencesDialog::PreferencesDialog(wxWindow* parent) : 
+PreferencesDialog::PreferencesDialog(wxWindow* parent, int selected_tab) :
    DPIDialog(parent, wxID_ANY, _L("Preferences"), wxDefaultPosition, 
              wxDefaultSize, wxDEFAULT_DIALOG_STYLE)
 {
 #ifdef __WXOSX__
    isOSX = true;
 #endif
-	build();
+	build(selected_tab);
 }
 static std::shared_ptr<ConfigOptionsGroup>create_options_tab(const wxString& title, wxBookCtrlBase* tabs)
@ -44,7 +44,7 @@ static void activate_options_tab(std::shared_ptr<ConfigOptionsGroup> optgroup)
 	sizer->Add(optgroup->sizer, 0, wxEXPAND | wxALL, 10);
 }
-void PreferencesDialog::build()
+void PreferencesDialog::build(size_t selected_tab)
 {
 #ifdef _WIN32
 	wxGetApp().UpdateDarkUI(this);
@ -350,6 +350,13 @@ void PreferencesDialog::build()
 		m_optgroup_gui->append_single_option_line(option);
 #endif
 		def.label = L("Show \"Did you know\" hints after start");
 		def.type = coBool;
 		def.tooltip = L("If enabled, useful hints are displayed at startup.");
 		def.set_default_value(new ConfigOptionBool{ app_config->get("show_hints") == "1" });
 		option = Option(def, "show_hints");
 		m_optgroup_gui->append_single_option_line(option);
 		def.label = L("Use custom size for toolbar icons");
 		def.type = coBool;
 		def.tooltip = L("If enabled, you can change size of toolbar icons manually.");
@ -387,6 +394,9 @@ void PreferencesDialog::build()
 	}
 #endif // ENABLE_ENVIRONMENT_MAP
 	if (selected_tab < tabs->GetPageCount())
 		tabs->SetSelection(selected_tab);
 	auto sizer = new wxBoxSizer(wxVERTICAL);
 	sizer->Add(tabs, 1, wxEXPAND | wxTOP | wxLEFT | wxRIGHT, 5);
--- a/src/slic3r/GUI/Preferences.hpp
+++ b/src/slic3r/GUI/Preferences.hpp
@ -33,14 +33,14 @@ class PreferencesDialog : public DPIDialog
 	bool								m_recreate_GUI{false};
 public:
-	explicit PreferencesDialog(wxWindow* parent);
+	explicit PreferencesDialog(wxWindow* parent, int selected_tab = 0);
 	~PreferencesDialog() = default;
 	bool settings_layout_changed() const { return m_settings_layout_changed; }
 	bool seq_top_layer_only_changed() const { return m_seq_top_layer_only_changed; }
 	bool seq_seq_top_gcode_indices_changed() const { return m_seq_top_gcode_indices_changed; }
 	bool recreate_GUI() const { return m_recreate_GUI; }
-	void build();
+	void	build(size_t selected_tab = 0);
 	void	accept(wxEvent&);
 protected: