add wireframe paint option,

write file information on the screen,
bug fixes

QtMeshViewer/Header/GeometryEngine.h

@@ -33,7 +33,7 @@ private:
 
 public slots:
 	void loadFile(QString filePath);
-	void drawGeometry(QOpenGLShaderProgram *program);
+	void drawGeometry(QOpenGLShaderProgram *program, bool wireframe);
 
 signals:
 	void requestResetView();

QtMeshViewer/Header/MainWindow.h

@@ -1,8 +1,10 @@
 #pragma once
 
 #include <QtWidgets/QMainWindow>
+#include <qwidget.h>
 #include <QByteArray>
 #include <QStringList>
+#include <QLabel>
 #include "ui_MainWindow.h"
 
 struct Material;
@@ -20,7 +22,7 @@ private:
 	int m_curSeverity;
 	void setupWidgets();
 	QByteArray m_fileInfo;
-	
+	QLabel* m_output;
 
 private:
 	void openFile();
@@ -28,6 +30,9 @@ private:
 	void aboutTool();
 	void takeScreenShot();
 
+protected:
+	virtual void resizeEvent(QResizeEvent * e) Q_DECL_OVERRIDE;
+
 public slots:
 	void printMessage(QString message, int severity);
 	void setFileInfo(QString name, QVector<Material>* materials, int vertices, int triangle);

QtMeshViewer/Header/OglViewerWidget.h

@@ -44,6 +44,8 @@ private:
 	QVector3D m_translation;
 	QQuaternion m_rotation;
 
+	bool m_wireframe = false;
+
 protected:
 	void mousePressEvent(QMouseEvent *e) Q_DECL_OVERRIDE;
 	void mouseReleaseEvent(QMouseEvent *e) Q_DECL_OVERRIDE;
@@ -66,5 +68,6 @@ private slots:
 
 public slots:
 	void changeDirection(int direction);
+	void toggleWireframe();
 };