Add network traffic graph

src/qt/rpcconsole.h

@@ -37,6 +37,12 @@ private slots:
     void on_openDebugLogfileButton_clicked();
     /** display messagebox with program parameters (same as bitcoin-qt --help) */
     void on_showCLOptionsButton_clicked();
+    /** change the time range of the network traffic graph */
+    void on_sldGraphRange_valueChanged(int value);
+    /** update traffic statistics */
+    void updateTrafficStats(quint64 totalBytesIn, quint64 totalBytesOut);
+    /** clear traffic graph */
+    void on_btnClearTrafficGraph_clicked();
 
 public slots:
     void clear();
@@ -55,6 +61,9 @@ signals:
     void cmdRequest(const QString &command);
 
 private:
+    static QString FormatBytes(quint64 bytes);
+    void setTrafficGraphRange(int mins);
+
     Ui::RPCConsole *ui;
     ClientModel *clientModel;
     QStringList history;