Added template for the handle of the TextCtrl's focus event

src/slic3r/GUI/Field.cpp

@@ -77,6 +77,15 @@ void Field::on_kill_focus(wxEvent& event)
         m_on_kill_focus(m_opt_id);
 }
 
+void Field::on_set_focus(wxEvent& event)
+{
+    // to allow the default behavior
+	event.Skip();
+	// call the registered function if it is available
+    if (m_on_set_focus!=nullptr) 
+        m_on_set_focus(m_opt_id);
+}
+
 void Field::on_change_field()
 {
 //       std::cerr << "calling Field::_on_change \n";
@@ -220,6 +229,8 @@ void TextCtrl::BUILD() {
 	auto temp = new wxTextCtrl(m_parent, wxID_ANY, text_value, wxDefaultPosition, size, style);
 
 	temp->SetToolTip(get_tooltip_text(text_value));
+
+    temp->Bind(wxEVT_SET_FOCUS, ([this](wxEvent& e) { on_set_focus(e); }), temp->GetId());
     
 	temp->Bind(wxEVT_LEFT_DOWN, ([temp](wxEvent& event)
 	{

src/slic3r/GUI/Field.hpp

@@ -76,6 +76,8 @@ protected:
 	//! in another case we can't unfocused control at all
 	void			on_kill_focus(wxEvent& event);
     /// Call the attached on_change method. 
+    void			on_set_focus(wxEvent& event);
+    /// Call the attached on_change method. 
     void			on_change_field();
     /// Call the attached m_back_to_initial_value method. 
 	void			on_back_to_initial_value();
@@ -89,6 +91,9 @@ public:
     /// Function object to store callback passed in from owning object.
 	t_kill_focus	m_on_kill_focus {nullptr};
 
+    /// Function object to store callback passed in from owning object.
+	t_kill_focus	m_on_set_focus {nullptr};
+
     /// Function object to store callback passed in from owning object.
 	t_change		m_on_change {nullptr};
 

src/slic3r/GUI/GLCanvas3D.hpp

@@ -971,6 +971,8 @@ public:
     void viewport_changed();
 #endif // ENABLE_CONSTRAINED_CAMERA_TARGET
 
+    void handle_sidebar_focus_event(const std::string& opt_key) {}
+
 private:
     bool _is_shown_on_screen() const;
     void _force_zoom_to_bed();

src/slic3r/GUI/GUI_ObjectManipulation.cpp

@@ -71,6 +71,11 @@ ObjectManipulation::ObjectManipulation(wxWindow* parent) :
         m_og->set_value(opt_key, double_to_string(0.0));
     };
 
+    m_og->m_set_focus = [this](const std::string& opt_key)
+    {
+        wxGetApp().plater()->canvas3D()->handle_sidebar_focus_event(opt_key);
+    };
+
     ConfigOptionDef def;
 
     // Objects(sub-objects) name

src/slic3r/GUI/OptionsGroup.cpp

@@ -78,6 +78,11 @@ const t_field& OptionsGroup::build_field(const t_config_option_key& id, const Co
 			if (!m_disabled) 
 				this->on_kill_focus(opt_id);
 	};
+    field->m_on_set_focus = [this](const std::string& opt_id) {
+			//! This function will be called from Field.					
+			if (!m_disabled) 
+				this->on_set_focus(opt_id);
+	};
     field->m_parent = parent();
 	
 	//! Label to change background color, when option is modified
@@ -277,6 +282,12 @@ Line OptionsGroup::create_single_option_line(const Option& option) const {
     return retval;
 }
 
+void OptionsGroup::on_set_focus(const std::string& opt_key)
+{
+    if (m_set_focus != nullptr)
+        m_set_focus(opt_key);
+}
+
 void OptionsGroup::on_change_OG(const t_config_option_key& opt_id, const boost::any& value) {
 	if (m_on_change != nullptr)
 		m_on_change(opt_id, value);

src/slic3r/GUI/OptionsGroup.hpp

@@ -87,6 +87,7 @@ public:
     column_t		extra_column {nullptr};
     t_change		m_on_change { nullptr };
     t_kill_focus    m_fill_empty_value { nullptr };
+    t_kill_focus    m_set_focus { nullptr };
 	std::function<DynamicPrintConfig()>	m_get_initial_config{ nullptr };
 	std::function<DynamicPrintConfig()>	m_get_sys_config{ nullptr };
 	std::function<bool()>	have_sys_config{ nullptr };
@@ -210,6 +211,7 @@ protected:
 	void				add_undo_buttuns_to_sizer(wxSizer* sizer, const t_field& field);
 
     virtual void		on_kill_focus(const std::string& opt_key) {};
+	virtual void		on_set_focus(const std::string& opt_key);
 	virtual void		on_change_OG(const t_config_option_key& opt_id, const boost::any& value);
 	virtual void		back_to_initial_value(const std::string& opt_key) {}
 	virtual void		back_to_sys_value(const std::string& opt_key) {}