Define new event to post status text messages to a status bar; meant for child items to post information to the status bar that propagate up

src/CMakeLists.txt

@@ -186,6 +186,7 @@ IF(wxWidgets_FOUND)
     ${GUI_LIBDIR}/GUI.cpp
     ${GUI_LIBDIR}/MainFrame.cpp
     ${GUI_LIBDIR}/Plater.cpp
+    ${GUI_LIBDIR}/ProgressStatusBar.cpp
     ${GUI_LIBDIR}/Plater/Plate2D.cpp
     ${GUI_LIBDIR}/Plater/PlaterObject.cpp
     ${GUI_LIBDIR}/Settings.cpp

src/GUI/ProgressStatusBar.cpp

@@ -0,0 +1,10 @@
+#include "ProgressStatusBar.hpp"
+
+namespace Slic3r { namespace GUI {
+
+void ProgressStatusBar::SendStatusText(wxEvtHandler* dest, wxWindowID origin, const wxString& msg) {
+    wxQueueEvent(dest, new StatusTextEvent(EVT_STATUS_TEXT_POST, origin, msg));
+
+}
+
+}} // Namespace Slic3r::GUI

src/GUI/ProgressStatusBar.hpp

@@ -0,0 +1,35 @@
+#ifndef PROGRESSSTATUSBAR_HPP
+#define PROGRESSSTATUSBAR_HPP
+#include <wx/event.h> 
+#include <wx/statusbr.h>
+
+namespace Slic3r { namespace GUI {
+
+class StatusTextEvent : public wxEvent {
+public:
+    StatusTextEvent(wxEventType eventType, int winid, const wxString& msg) 
+        : wxEvent(winid, eventType),
+        message(msg) { }
+
+    bool ShouldPropagate() const { return true; } // propagate this event
+
+    /// One accessor
+    const wxString& GetMessage() const {return message;}
+    /// implement the base class pure virtual
+    virtual wxEvent *Clone() const { return new StatusTextEvent(*this); }
+
+private:
+    const wxString message;
+};
+
+wxDEFINE_EVENT(EVT_STATUS_TEXT_POST, StatusTextEvent);
+
+class ProgressStatusBar : public wxStatusBar {
+public:
+    //< Post an event to owning box and let it percolate up to a window that sets the appropriate status text.
+    static void SendStatusText(wxEvtHandler* dest, wxWindowID origin, const wxString& msg);
+    ProgressStatusBar(wxWindow* parent, int id) : wxStatusBar(parent, id) { }
+};
+
+}} // Namespace Slic3r::GUI
+#endif // PROGRESSSTATUSBAR_HPP