use OutputDevice to set fileinfo,

use new connect function,

QtMeshViewer/Header/OutputDevice.h

@@ -1,6 +1,8 @@
 #pragma once
 #include <QObject>
 
+struct Material;
+
 class OutputDevice : public QObject
 {
 	Q_OBJECT
@@ -20,8 +22,11 @@ public:
 	};
 
 	void print(QString message, int severity) { emit sendMessage(message, severity); };
+	void setFileInfo(QString name, QVector<Material>* materials, int vertices, int triangle) {
+		emit sendFileInfo(name, materials, vertices, triangle);
+	};
 
 signals:
 	void sendMessage(QString message, int severity);
-
+	void sendFileInfo(QString name, QVector<Material>* materials, int vertices, int triangle);
 };