diff --git a/src/chartbackground.cpp b/src/chartbackground.cpp
new file mode 100644
index 0000000..1b09a54
--- /dev/null
+++ b/src/chartbackground.cpp
@@ -0,0 +1,43 @@
+#include "chartbackground_p.h"
+#include <QPen>
+#include <QBrush>
+#include <QPainter>
+
+QTCOMMERCIALCHART_BEGIN_NAMESPACE
+
+ChartBackground::ChartBackground(QGraphicsItem* parent):QGraphicsRectItem(parent),
+m_diameter(15)
+{
+
+}
+
+ChartBackground::~ChartBackground()
+{
+
+}
+
+void ChartBackground::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
+{
+   Q_UNUSED(option);
+   Q_UNUSED(widget);
+   painter->setPen(pen());
+   painter->setBrush(brush());
+   painter->drawRoundRect(rect(),roundness(rect().width()),roundness(rect().height()));
+}
+
+int ChartBackground::roundness(qreal size) const
+{
+    return 100*m_diameter/int(size);
+}
+
+int ChartBackground::diameter() const
+{
+    return m_diameter;
+}
+
+void ChartBackground::setDimeter(int dimater)
+{
+    m_diameter=dimater;
+}
+
+QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/chartbackground_p.h b/src/chartbackground_p.h
new file mode 100644
index 0000000..00549ee
--- /dev/null
+++ b/src/chartbackground_p.h
@@ -0,0 +1,33 @@
+#ifndef CHARTBACKGROUND_H_
+#define CHARTBACKGROUND_H_
+
+#include "qchartglobal.h"
+#include <QGraphicsRectItem>
+
+QTCOMMERCIALCHART_BEGIN_NAMESPACE
+
+class ChartBackground: public QGraphicsRectItem
+{
+public:
+    ChartBackground(QGraphicsItem *parent =0);
+    ~ChartBackground();
+
+    void setDimeter(int dimater);
+    int diameter() const;
+
+
+protected:
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
+
+
+private:
+    int roundness(qreal size) const;
+
+private:
+     int m_diameter;
+
+};
+
+#endif /* CHARTBACKGROUND_H_ */
+
+QTCOMMERCIALCHART_END_NAMESPACE