progress bar, code cleaning, popup menu for closing tabs

include/WolmanCustomPlot.h

@@ -64,8 +64,9 @@ protected:
 
 };
 
-class WolmanCustomPlot : public QWidget
+class WolmanCustomPlot : public QCustomPlot
 {
+	Q_OBJECT
 public:
 	WolmanCustomPlot(const Eigen::ArrayXf& d_sample);
 
@@ -73,6 +74,13 @@ public:
 
 	QCPGraph* m_graph;
 
+	void emitCloseTab(){emit closeTab();}
+
+	void mousePressEvent(QMouseEvent* event) override;
+
+signals:
+	void closeTab();
+
 private:
 	Ui::WolmanCustomPlot *ui;
 };