-#include <QPainter>
+#include "correlation_meter.h"
#include <math.h>
+#include <algorithm>
-#include "correlation_meter.h"
+#include <QBrush>
+#include <QColor>
+#include <QPainter>
+#include <QRect>
+
+class QPaintEvent;
+class QResizeEvent;
using namespace std;