NotificationManager -> Separate notification update from its render to reduce the amount of scene refresh

3 files changed, 314 insertions, 13 deletions

diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index e2d3a9585..84b17efb7 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -1703,7 +1703,7 @@ void GLCanvas3D::render()
         m_tooltip.render(m_mouse.position, *this);
 
     wxGetApp().plater()->get_mouse3d_controller().render_settings_dialog(*this);
-	wxGetApp().plater()->get_notification_manager()->render_notifications(get_overlay_window_width());
+    wxGetApp().plater()->get_notification_manager()->render_notifications(get_overlay_window_width());
 
     wxGetApp().imgui()->render();
 
@@ -2358,6 +2358,14 @@ void GLCanvas3D::on_idle(wxIdleEvent& evt)
     if (!m_initialized)
         return;
 
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+    NotificationManager* notification_mgr = wxGetApp().plater()->get_notification_manager();
+    if (notification_mgr->requires_update())
+        notification_mgr->update_notifications();
+
+    m_dirty |= notification_mgr->requires_render();
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+
     m_dirty |= m_main_toolbar.update_items_state();
     m_dirty |= m_undoredo_toolbar.update_items_state();
     m_dirty |= wxGetApp().plater()->get_view_toolbar().update_items_state();
@@ -2365,12 +2373,24 @@ void GLCanvas3D::on_idle(wxIdleEvent& evt)
     bool mouse3d_controller_applied = wxGetApp().plater()->get_mouse3d_controller().apply(wxGetApp().plater()->get_camera());
     m_dirty |= mouse3d_controller_applied;
 
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+    if (!m_dirty) {
+        if (notification_mgr->requires_update())
+            evt.RequestMore();
+        return;
+    }
+#else
     if (!m_dirty)
         return;
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
 
     _refresh_if_shown_on_screen();
 
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+    if (m_extra_frame_requested || mouse3d_controller_applied || notification_mgr->requires_update()) {
+#else
     if (m_extra_frame_requested || mouse3d_controller_applied) {
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
         m_dirty = true;
         m_extra_frame_requested = false;
         evt.RequestMore();
@@ -2505,7 +2525,7 @@ void GLCanvas3D::on_char(wxKeyEvent& evt)
         case WXK_BACK:
         case WXK_DELETE:
              post_event(SimpleEvent(EVT_GLTOOLBAR_DELETE_ALL)); break;
-		default:            evt.Skip();
+        default:            evt.Skip();
         }
     }
     else if ((evt.GetModifiers() & shiftMask) != 0) {
diff --git a/src/slic3r/GUI/NotificationManager.cpp b/src/slic3r/GUI/NotificationManager.cpp
index 15c84af9e..bf4142b9c 100644
--- a/src/slic3r/GUI/NotificationManager.cpp
+++ b/src/slic3r/GUI/NotificationManager.cpp
@@ -18,6 +18,9 @@
 
 static constexpr float GAP_WIDTH = 10.0f;
 static constexpr float SPACE_RIGHT_PANEL = 10.0f;
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+static constexpr float FADING_OUT_DURATION = 2.0f;
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
 
 namespace Slic3r {
 namespace GUI {
@@ -134,6 +137,96 @@ NotificationManager::PopNotification::PopNotification(const NotificationData &n,
 {
 	//init();
 }
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+void NotificationManager::PopNotification::render(GLCanvas3D& canvas, float initial_y, bool move_from_overlay, float overlay_width)
+{
+	if (m_hidden) {
+		m_top_y = initial_y - GAP_WIDTH;
+		return;
+	}
+
+	Size cnv_size = canvas.get_canvas_size();
+	ImGuiWrapper& imgui = *wxGetApp().imgui();
+	ImVec2 mouse_pos = ImGui::GetMousePos();
+	float right_gap = SPACE_RIGHT_PANEL + (move_from_overlay ? overlay_width + m_line_height * 5 : 0);
+
+	if (m_line_height != ImGui::CalcTextSize("A").y)
+		init();
+
+	set_next_window_size(imgui);
+
+	// top y of window
+	m_top_y = initial_y + m_window_height;
+
+	ImVec2 win_pos(1.0f * (float)cnv_size.get_width() - right_gap, 1.0f * (float)cnv_size.get_height() - m_top_y);
+	imgui.set_next_window_pos(win_pos.x, win_pos.y, ImGuiCond_Always, 1.0f, 0.0f);
+	imgui.set_next_window_size(m_window_width, m_window_height, ImGuiCond_Always);
+
+	// find if hovered
+	m_hovered = false;
+	if (mouse_pos.x < win_pos.x && mouse_pos.x > win_pos.x - m_window_width && mouse_pos.y > win_pos.y && mouse_pos.y < win_pos.y + m_window_height) {
+		ImGui::SetNextWindowFocus();
+		m_hovered = true;
+	}
+
+	// color change based on fading out
+	bool fading_pop = false;
+	if (m_fading_out) {
+		Notifications_Internal::push_style_color(ImGuiCol_WindowBg, ImGui::GetStyleColorVec4(ImGuiCol_WindowBg), m_fading_out, m_current_fade_opacity);
+		Notifications_Internal::push_style_color(ImGuiCol_Text, ImGui::GetStyleColorVec4(ImGuiCol_Text), m_fading_out, m_current_fade_opacity);
+		fading_pop = true;
+	}
+
+	// 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_fading_out, m_current_fade_opacity);
+	}
+	else 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_fading_out, m_current_fade_opacity);
+	}
+	else 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_fading_out, m_current_fade_opacity);
+	}
+
+	// name of window - probably indentifies window and is shown so last_end add whitespaces according to id
+	if (m_id == 0)
+		m_id = m_id_provider.allocate_id();
+	std::string name = "!!Ntfctn" + std::to_string(m_id);
+	if (imgui.begin(name, ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoScrollbar)) {
+		ImVec2 win_size = ImGui::GetWindowSize();
+
+		//FIXME: dont forget to us this for texts
+		//GUI::format(_utf8(L()));
+
+		/*
+		//countdown numbers
+		ImGui::SetCursorPosX(15);
+		ImGui::SetCursorPosY(15);
+		imgui.text(std::to_string(m_remaining_time).c_str());
+		*/
+
+		render_left_sign(imgui);
+		render_text(imgui, win_size.x, win_size.y, win_pos.x, win_pos.y);
+		render_close_button(imgui, win_size.x, win_size.y, win_pos.x, win_pos.y);
+		m_minimize_b_visible = false;
+		if (m_multiline && m_lines_count > 3)
+			render_minimize_button(imgui, win_pos.x, win_pos.y);
+	}
+	imgui.end();
+
+	if (m_is_gray || m_data.level == NotificationLevel::ErrorNotification || m_data.level == NotificationLevel::WarningNotification)
+		ImGui::PopStyleColor();
+
+	if (fading_pop)
+		ImGui::PopStyleColor(2);
+}
+#else
 NotificationManager::PopNotification::RenderResult NotificationManager::PopNotification::render(GLCanvas3D& canvas, const float& initial_y, bool move_from_overlay, float overlay_width)
 {
 	if (!m_initialized) {
@@ -268,6 +361,7 @@ NotificationManager::PopNotification::RenderResult NotificationManager::PopNotif
 		ImGui::PopStyleColor();
 	return ret_val;
 }
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
 void NotificationManager::PopNotification::count_spaces()
 {
 	//determine line width 
@@ -528,6 +622,7 @@ void NotificationManager::PopNotification::render_close_button(ImGuiWrapper& img
 	ImGui::PopStyleColor();
 	ImGui::PopStyleColor();
 }
+#if !ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
 void NotificationManager::PopNotification::render_countdown(ImGuiWrapper& imgui, const float win_size_x, const float win_size_y, const float win_pos_x, const float win_pos_y)
 {
 	/*
@@ -575,6 +670,7 @@ void NotificationManager::PopNotification::render_countdown(ImGuiWrapper& imgui,
 		m_countdown_frame++;
 		*/
 }
+#endif // !ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
 void NotificationManager::PopNotification::render_left_sign(ImGuiWrapper& imgui)
 {
 	if (m_data.level == NotificationLevel::ErrorNotification || m_data.level == NotificationLevel::WarningNotification) {
@@ -643,6 +739,52 @@ bool NotificationManager::PopNotification::compare_text(const std::string& text)
 	return false;
 }
 
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+void NotificationManager::PopNotification::update_state()
+{
+	if (!m_initialized)
+		init();
+
+	if (m_hidden) {
+		m_state = EState::Static;
+		return;
+	}
+
+	if (m_hovered) {
+		// reset fading
+		m_fading_out = false;
+		m_current_fade_opacity = 1.0f;
+		m_remaining_time = m_data.duration;
+	}
+
+	if (m_counting_down) {
+		if (m_fading_out && m_current_fade_opacity <= 0.0f)
+			m_finished = true;
+		else if (!m_fading_out && m_remaining_time == 0) {
+			m_fading_out = true;
+			m_fading_start = wxGetLocalTimeMillis();
+		}
+	}
+
+	if (m_finished) {
+		m_state = EState::Finished;
+		return;
+	}
+	if (m_close_pending) {
+		m_finished = true;
+		m_state = EState::ClosePending;
+		return;
+	}
+	if (m_fading_out) {
+		if (!m_paused) {
+			wxMilliClock_t curr_time = wxGetLocalTimeMillis() - m_fading_start;
+			m_current_fade_opacity = std::clamp(1.0f - 0.001f * static_cast<float>(curr_time.GetValue()) / FADING_OUT_DURATION, 0.0f, 1.0f);
+		}
+		m_state = EState::FadingOut;
+	}
+}
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+
 NotificationManager::SlicingCompleteLargeNotification::SlicingCompleteLargeNotification(const NotificationData& n, NotificationIDProvider& id_provider, wxEvtHandler* evt_handler, bool large) :
 	  NotificationManager::PopNotification(n, id_provider, evt_handler)
 {
@@ -1031,6 +1173,10 @@ bool NotificationManager::push_notification_data(const NotificationData& notific
 }
 bool NotificationManager::push_notification_data(std::unique_ptr<NotificationManager::PopNotification> notification, int timestamp)
 {
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+	m_requires_update = true;
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+
 	// if timestamped notif, push only new one
 	if (timestamp != 0) {
 		if (m_used_timestamps.find(timestamp) == m_used_timestamps.end()) {
@@ -1052,6 +1198,21 @@ bool NotificationManager::push_notification_data(std::unique_ptr<NotificationMan
 		return true;
 	}
 }
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+void NotificationManager::render_notifications(float overlay_width)
+{
+	sort_notifications();
+
+	GLCanvas3D& canvas = *wxGetApp().plater()->get_current_canvas3D();
+	float last_y = 0.0f;
+
+	for (const auto& notification : m_pop_notifications) {
+		notification->render(canvas, last_y, m_move_from_overlay && !m_in_preview, overlay_width);
+		if (notification->get_state() != PopNotification::EState::Finished)
+			last_y = notification->get_top() + GAP_WIDTH;
+	}
+}
+#else
 void NotificationManager::render_notifications(float overlay_width)
 {
 	float    last_x = 0.0f;
@@ -1063,9 +1224,9 @@ void NotificationManager::render_notifications(float overlay_width)
 
 	GLCanvas3D& canvas = *wxGetApp().plater()->get_current_canvas3D();
 
-	// iterate thru notifications and render them / erease them
+	// iterate thru notifications and render them / erase them
 	for (auto it = m_pop_notifications.begin(); it != m_pop_notifications.end();) { 
-		if ((*it)->get_finished()) {
+		if ((*it)->is_finished()) {
 			it = m_pop_notifications.erase(it);
 		} else {
 			(*it)->set_paused(m_hovered);
@@ -1115,6 +1276,7 @@ void NotificationManager::render_notifications(float overlay_width)
 		// If any of the notifications is fading out, 100% of the CPU/GPU is consumed.
 		canvas.request_extra_frame();
 }
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
 
 void NotificationManager::sort_notifications()
 {
@@ -1122,7 +1284,7 @@ void NotificationManager::sort_notifications()
 	std::stable_sort(m_pop_notifications.begin(), m_pop_notifications.end(), [](const std::unique_ptr<PopNotification> &n1, const std::unique_ptr<PopNotification> &n2) {
 		int n1l = (int)n1->get_data().level;
 		int n2l = (int)n2->get_data().level;
-		if (n1l == n2l && n1->get_is_gray() && !n2->get_is_gray())
+		if (n1l == n2l && n1->is_gray() && !n2->is_gray())
 			return true;
 		return (n1l < n2l);
 		});
@@ -1133,7 +1295,7 @@ bool NotificationManager::activate_existing(const NotificationManager::PopNotifi
 	NotificationType   new_type = notification->get_type();
 	const std::string &new_text = notification->get_data().text1;
 	for (auto it = m_pop_notifications.begin(); it != m_pop_notifications.end(); ++it) {
-		if ((*it)->get_type() == new_type && !(*it)->get_finished()) {
+		if ((*it)->get_type() == new_type && !(*it)->is_finished()) {
 			if (new_type == NotificationType::CustomNotification || new_type == NotificationType::PlaterWarning) {
 				if (!(*it)->compare_text(new_text))
 					continue;
@@ -1166,6 +1328,78 @@ void NotificationManager::set_in_preview(bool preview)
     }
 }
 
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+void NotificationManager::update_notifications()
+{
+	static size_t last_size = 0;
+
+	for (auto it = m_pop_notifications.begin(); it != m_pop_notifications.end();) {
+		std::unique_ptr<PopNotification>& notification = *it;
+		if (notification->get_state() == PopNotification::EState::Finished)
+			it = m_pop_notifications.erase(it);
+		else {
+			notification->set_paused(m_hovered);
+			notification->update_state();
+			++it;
+		}
+	}
+
+	m_requires_update = false;
+	for (const std::unique_ptr<PopNotification>& notification : m_pop_notifications) {
+		if (notification->requires_update()) {
+			m_requires_update = true;
+			break;
+		}
+	}
+
+	// update hovering state
+	m_hovered = false;
+	for (const std::unique_ptr<PopNotification>& notification : m_pop_notifications) {
+		if (notification->is_hovered()) {
+			m_hovered = true;
+			break;
+		}
+	}
+
+	size_t curr_size = m_pop_notifications.size();
+	m_requires_render = m_hovered || (last_size != curr_size);
+	last_size = curr_size;
+
+	if (!m_requires_render) {
+		for (const std::unique_ptr<PopNotification>& notification : m_pop_notifications) {
+			if (notification->requires_render()) {
+				m_requires_render = true;
+				break;
+			}
+		}
+	}
+
+	// actualizate timers
+	wxWindow* p = dynamic_cast<wxWindow*>(wxGetApp().plater());
+	while (p->GetParent() != nullptr)
+		p = p->GetParent();
+	wxTopLevelWindow* top_level_wnd = dynamic_cast<wxTopLevelWindow*>(p);
+	if (!top_level_wnd->IsActive())
+		return;
+
+	{
+		// Control the fade-out.
+		// time in seconds
+		long now = wxGetLocalTime();
+		// Pausing fade-out when the mouse is over some notification.
+		if (!m_hovered && m_last_time < now) {
+			if (now - m_last_time >= 1) {
+				for (auto& notification : m_pop_notifications) {
+					if (notification->get_state() != PopNotification::EState::Static)
+						notification->substract_remaining_time();
+				}
+			}
+			m_last_time = now;
+		}
+	}
+}
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+
 bool NotificationManager::has_slicing_error_notification()
 {
 	return std::any_of(m_pop_notifications.begin(), m_pop_notifications.end(), [](auto &n) {
diff --git a/src/slic3r/GUI/NotificationManager.hpp b/src/slic3r/GUI/NotificationManager.hpp
index d8ca1e0bd..81c57eccb 100644
--- a/src/slic3r/GUI/NotificationManager.hpp
+++ b/src/slic3r/GUI/NotificationManager.hpp
@@ -140,7 +140,13 @@ public:
     void set_in_preview(bool preview);
 	// Move to left to avoid colision with variable layer height gizmo.
 	void set_move_from_overlay(bool move) { m_move_from_overlay = move; }
-	
+
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+	void update_notifications();
+	bool requires_update() const { return m_requires_update; }
+	bool requires_render() const { return m_requires_render; }
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+
 private:
 	// duration 0 means not disapearing
 	struct NotificationData {
@@ -175,6 +181,17 @@ private:
 	class PopNotification
 	{
 	public:
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+		enum class EState
+		{
+			Unknown,
+			Static,
+			Countdown,
+			FadingOut,
+			ClosePending,
+			Finished
+		};
+#else
 		enum class RenderResult
 		{
 			Finished,
@@ -183,27 +200,41 @@ private:
 			Countdown,
 			Hovered
 		};
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
 		PopNotification(const NotificationData &n, NotificationIDProvider &id_provider, wxEvtHandler* evt_handler);
 		virtual ~PopNotification() { if (m_id) m_id_provider.release_id(m_id); }
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+		void                   render(GLCanvas3D& canvas, float initial_y, bool move_from_overlay, float overlay_width);
+#else
 		RenderResult           render(GLCanvas3D& canvas, const float& initial_y, bool move_from_overlay, float overlay_width);
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
 		// close will dissapear notification on next render
 		void                   close() { m_close_pending = true; }
 		// data from newer notification of same type
 		void                   update(const NotificationData& n);
-		bool                   get_finished() const { return m_finished || m_close_pending; }
+		bool                   is_finished() const { return m_finished || m_close_pending; }
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+		bool                   is_hovered() const { return m_hovered; }
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
 		// returns top after movement
 		float                  get_top() const { return m_top_y; }
 		//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 bool             get_is_gray() const { return m_is_gray; }
+		const NotificationData get_data() const { return m_data; }
+		const bool             is_gray() const { return m_is_gray; }
 		// Call equals one second down
 		void                   substract_remaining_time() { m_remaining_time--; }
 		void                   set_gray(bool g) { m_is_gray = g; }
 		void                   set_paused(bool p) { m_paused = p; }
 		bool                   compare_text(const std::string& text);
         void                   hide(bool h) { m_hidden = h; }
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+		void                   update_state();
+		bool				   requires_render() const { return m_fading_out || m_close_pending || m_finished; }
+		bool				   requires_update() const { return m_state != EState::Static; }
+		EState                 get_state() const { return m_state; }
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
 
 	protected:
 		// Call after every size change
@@ -218,9 +249,11 @@ private:
 		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);
+#if !ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
 		void         render_countdown(ImGuiWrapper& imgui,
 			                          const float win_size_x, const float win_size_y,
 			                          const float win_pos_x , const float win_pos_y);
+#endif // !ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
 		virtual void render_hypertext(ImGuiWrapper& imgui,
 			                          const float text_x, const float text_y,
 		                              const std::string text,
@@ -237,7 +270,10 @@ private:
 
 		// For reusing ImGUI windows.
 		NotificationIDProvider &m_id_provider;
-		int              m_id { 0 };
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+		EState           m_state                { EState::Unknown };
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+		int              m_id                   { 0 };
 		bool			 m_initialized          { false };
 		// Main text
 		std::string      m_text1;
@@ -252,15 +288,22 @@ private:
 		bool             m_paused               { false };
 		int              m_countdown_frame      { 0 };
 		bool             m_fading_out           { false };
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+		wxMilliClock_t   m_fading_start         { 0LL };
+#else
 		// total time left when fading beggins
-		float            m_fading_time          { 0.0f }; 
-		float            m_current_fade_opacity { 1.f };
+		float            m_fading_time{ 0.0f };
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+		float            m_current_fade_opacity { 1.0f };
 		// If hidden the notif is alive but not visible to user
 		bool             m_hidden               { false };
 		//  m_finished = true - does not render, marked to delete
 		bool             m_finished             { false }; 
 		// Will go to m_finished next render
 		bool             m_close_pending        { false }; 
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+		bool             m_hovered              { false };
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
 		// variables to count positions correctly
 		// all space without text
 		float            m_window_width_offset;
@@ -390,6 +433,10 @@ private:
 	bool                         m_in_preview { false };
 	// True if the layer editing is enabled in Plater, so that the notifications are shifted left of it.
 	bool                         m_move_from_overlay { false };
+#if ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
+	bool						 m_requires_update{ false };
+	bool						 m_requires_render{ false };
+#endif // ENABLE_NEW_NOTIFICATIONS_FADE_OUT 
 
 	//prepared (basic) notifications
 	const std::vector<NotificationData> basic_notifications = {