core: added shortcut to set status bar message

app/core.cpp

@@ -65,6 +65,7 @@
 #include "widget/menu/menushared.h"
 #include "widget/taskview/taskviewitem.h"
 #include "widget/viewer/viewer.h"
+#include "window/mainwindow/mainstatusbar.h"
 #include "window/mainwindow/mainwindow.h"
 
 namespace olive {
@@ -936,6 +937,11 @@ bool Core::SaveProject(Project* p)
   }
 }
 
+void Core::ShowStatusBarMessage(const QString &s)
+{
+  main_window_->statusBar()->showMessage(s);
+}
+
 bool Core::SaveProjectAs(Project* p)
 {
   QFileDialog fd(main_window_, tr("Save Project As"));

app/core.h

@@ -291,6 +291,13 @@ public:
    */
   bool SaveProject(Project *p);
 
+  /**
+   * @brief Show message in main window's status bar
+   *
+   * Shorthand for Core::instance()->main_window()->statusBar()->showMessage();
+   */
+  void ShowStatusBarMessage(const QString& s);
+
   static const uint kProjectVersion;
 
 public slots: