diff --git a/examples/xlsx/chart/main.cpp b/examples/xlsx/chart/main.cpp
index 87eef04..b609d6d 100644
--- a/examples/xlsx/chart/main.cpp
+++ b/examples/xlsx/chart/main.cpp
@@ -1,7 +1,6 @@
 #include <QtCore>
 #include "xlsxdocument.h"
-#include "xlsxpiechart.h"
-#include "xlsxbarchart.h"
+#include "xlsxchart.h"
 #include "xlsxworksheet.h"
 
 using namespace QXlsx;
@@ -17,13 +16,14 @@ int main()
     //![0]
 
     //![1]
-    PieChart *pieChart = new PieChart;
-    pieChart->addSeries(CellRange("A1:A9"), sheet->sheetName());
-    sheet->insertChart(3, 3, pieChart, QSize(300, 300));
+    Chart *pieChart = sheet->insertChart(3, 3, QSize(300, 300));
+    pieChart->setChartType(Chart::CT_Pie);
+    pieChart->addSeries(CellRange("A1:A9"));
+
+    Chart *barChart = sheet->insertChart(6, 6, QSize(300, 300));
+    barChart->setChartType(Chart::CT_Bar);
+    barChart->addSeries(CellRange("A1:A9"));
 
-    BarChart *barChart = new BarChart;
-    barChart->addSeries(CellRange("A1:A9"), sheet->sheetName());
-    sheet->insertChart(6, 6, barChart, QSize(300, 300));
     //![1]
 
     //![2]
diff --git a/src/xlsx/qtxlsx.pri b/src/xlsx/qtxlsx.pri
index b366c39..cae32b9 100755
--- a/src/xlsx/qtxlsx.pri
+++ b/src/xlsx/qtxlsx.pri
@@ -39,13 +39,8 @@ HEADERS += $$PWD/xlsxdocpropscore_p.h \
     $$PWD/xlsxmediafile_p.h \
     $$PWD/xlsxooxmlfile.h \
     $$PWD/xlsxooxmlfile_p.h \
-    $$PWD/xlsxchartfile_p.h \
-    $$PWD/xlsxabstractchart.h \
-    $$PWD/xlsxabstractchart_p.h \
-    $$PWD/xlsxpiechart.h \
-    $$PWD/xlsxpiechart_p.h \
-    $$PWD/xlsxbarchart.h \
-    $$PWD/xlsxbarchart_p.h
+    $$PWD/xlsxchart.h \
+    $$PWD/xlsxchart_p.h
 
 SOURCES += $$PWD/xlsxdocpropscore.cpp \
     $$PWD/xlsxdocpropsapp.cpp \
@@ -72,7 +67,4 @@ SOURCES += $$PWD/xlsxdocpropscore.cpp \
     $$PWD/xlsxdrawinganchor.cpp \
     $$PWD/xlsxmediafile.cpp \
     $$PWD/xlsxooxmlfile.cpp \
-    $$PWD/xlsxchartfile.cpp \
-    $$PWD/xlsxabstractchart.cpp \
-    $$PWD/xlsxpiechart.cpp \
-    $$PWD/xlsxbarchart.cpp
+    $$PWD/xlsxchart.cpp
diff --git a/src/xlsx/xlsxabstractchart.cpp b/src/xlsx/xlsxabstractchart.cpp
deleted file mode 100644
index cf6c402..0000000
--- a/src/xlsx/xlsxabstractchart.cpp
+++ /dev/null
@@ -1,223 +0,0 @@
-/****************************************************************************
-** Copyright (c) 2013-2014 Debao Zhang <hello@debao.me>
-** All right reserved.
-**
-** Permission is hereby granted, free of charge, to any person obtaining
-** a copy of this software and associated documentation files (the
-** "Software"), to deal in the Software without restriction, including
-** without limitation the rights to use, copy, modify, merge, publish,
-** distribute, sublicense, and/or sell copies of the Software, and to
-** permit persons to whom the Software is furnished to do so, subject to
-** the following conditions:
-**
-** The above copyright notice and this permission notice shall be
-** included in all copies or substantial portions of the Software.
-**
-** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-** NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-** LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-** OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-** WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-**
-****************************************************************************/
-
-#include "xlsxabstractchart.h"
-#include "xlsxabstractchart_p.h"
-#include "xlsxchartfile_p.h"
-#include "xlsxcellrange.h"
-#include "xlsxutility_p.h"
-#include <QXmlStreamReader>
-#include <QXmlStreamWriter>
-
-QT_BEGIN_NAMESPACE_XLSX
-
-AbstractChartPrivate::AbstractChartPrivate(AbstractChart *chart)
-    :q_ptr(chart)
-{
-
-}
-
-AbstractChartPrivate::~AbstractChartPrivate()
-{
-
-}
-
-bool AbstractChartPrivate::loadXmlSer(QXmlStreamReader &reader)
-{
-    Q_ASSERT(reader.name() == QLatin1String("ser"));
-
-    while (!reader.atEnd()) {
-        reader.readNextStartElement();
-        if (reader.tokenType() == QXmlStreamReader::StartElement) {
-            if (reader.name() == QLatin1String("f")) {
-                XlsxSeries *series = new XlsxSeries;
-                series->numRef = reader.readElementText();
-                seriesList.append(QSharedPointer<XlsxSeries>(series));
-            }
-        } else if (reader.tokenType() == QXmlStreamReader::EndElement
-                   && reader.name() == QLatin1String("ser")) {
-            break;
-        }
-    }
-
-    return true;
-}
-
-/*!
- * \class AbstractChart
- *
- * Base class for all the charts.
- */
-
-
-AbstractChart::AbstractChart()
-    :d_ptr(new AbstractChartPrivate(this))
-{
-}
-
-AbstractChart::AbstractChart(AbstractChartPrivate *d)
-    :d_ptr(d)
-{
-
-}
-
-AbstractChart::~AbstractChart()
-{
-    Q_D(AbstractChart);
-    if (d->cf)
-        d->cf->m_chart = 0;
-}
-
-void AbstractChart::addSeries(const CellRange &range, const QString &sheet)
-{
-    Q_D(AbstractChart);
-
-    QString serRef = sheet;
-    serRef += QLatin1String("!");
-    serRef += xl_rowcol_to_cell(range.firstRow(), range.firstColumn(), true, true);
-    serRef += QLatin1String(":");
-    serRef += xl_rowcol_to_cell(range.lastRow(), range.lastColumn(), true, true);
-
-    XlsxSeries *series = new XlsxSeries;
-    series->numRef = serRef;
-
-    d->seriesList.append(QSharedPointer<XlsxSeries>(series));
-}
-
-bool AbstractChart::loadAxisFromXml(QXmlStreamReader &reader)
-{
-    Q_D(AbstractChart);
-    Q_ASSERT(reader.name().endsWith(QLatin1String("Ax")));
-    QString name = reader.name().toString();
-
-    XlsxAxis *axis = new XlsxAxis;
-    if (name == QLatin1String("valAx"))
-        axis->type = XlsxAxis::T_Val;
-    else if (name == QLatin1String("catAx"))
-        axis->type = XlsxAxis::T_Cat;
-    else if (name == QLatin1String("serAx"))
-        axis->type = XlsxAxis::T_Ser;
-    else
-        axis->type = XlsxAxis::T_Date;
-
-    d->axisList.append(QSharedPointer<XlsxAxis>(axis));
-
-    while (!reader.atEnd()) {
-        reader.readNextStartElement();
-        if (reader.tokenType() == QXmlStreamReader::StartElement) {
-            if (reader.name() == QLatin1String("axPos")) {
-                QXmlStreamAttributes attrs = reader.attributes();
-                QStringRef pos = attrs.value(QLatin1String("val"));
-                if (pos==QLatin1String("l"))
-                    axis->axisPos = XlsxAxis::Left;
-                else if (pos==QLatin1String("r"))
-                    axis->axisPos = XlsxAxis::Right;
-                else if (pos==QLatin1String("b"))
-                    axis->axisPos = XlsxAxis::Bottom;
-                else
-                    axis->axisPos = XlsxAxis::Top;
-            }
-        } else if (reader.tokenType() == QXmlStreamReader::EndElement
-                   && reader.name() == name) {
-            break;
-        }
-    }
-
-    return true;
-}
-
-void AbstractChart::saveAxisToXml(QXmlStreamWriter &writer) const
-{
-    Q_D(const AbstractChart);
-
-    for (int i=0; i<d->axisList.size(); ++i) {
-        XlsxAxis *axis = d->axisList[i].data();
-        QString name;
-        switch (axis->type) {
-        case XlsxAxis::T_Cat:
-            name = QStringLiteral("c:catAx");
-            break;
-        case XlsxAxis::T_Val:
-            name = QStringLiteral("c:valAx");
-            break;
-        case XlsxAxis::T_Ser:
-            name = QStringLiteral("c:serAx");
-            break;
-        case XlsxAxis::T_Date:
-            name = QStringLiteral("c:dateAx");
-            break;
-        default:
-            break;
-        }
-
-        QString pos;
-        switch (axis->axisPos) {
-        case XlsxAxis::Top:
-            pos = QStringLiteral("t");
-            break;
-        case XlsxAxis::Bottom:
-            pos = QStringLiteral("b");
-            break;
-        case XlsxAxis::Left:
-            pos = QStringLiteral("l");
-            break;
-        case XlsxAxis::Right:
-            pos = QStringLiteral("r");
-            break;
-        default:
-            break;
-        }
-
-        writer.writeStartElement(name);
-        writer.writeEmptyElement(QStringLiteral("c:axId"));
-        writer.writeAttribute(QStringLiteral("val"), QString::number(i+1));
-
-        writer.writeStartElement(QStringLiteral("c:scaling"));
-        writer.writeEmptyElement(QStringLiteral("c:orientation"));
-        writer.writeAttribute(QStringLiteral("val"), QStringLiteral("minMax"));
-        writer.writeEndElement();//c:scaling
-
-        writer.writeEmptyElement(QStringLiteral("c:axPos"));
-        writer.writeAttribute(QStringLiteral("val"), pos);
-
-        writer.writeEmptyElement(QStringLiteral("c:crossAx"));
-        writer.writeAttribute(QStringLiteral("val"), QString::number(i%2==0 ? i+2 : i));
-
-        writer.writeEndElement();//name
-    }
-}
-
-bool AbstractChart::loadLegendFromXml(QXmlStreamReader &reader)
-{
-
-    return false;
-}
-
-void AbstractChart::saveLegendToXml(QXmlStreamWriter &writer) const
-{
-
-}
-
-QT_END_NAMESPACE_XLSX
diff --git a/src/xlsx/xlsxabstractchart.h b/src/xlsx/xlsxabstractchart.h
deleted file mode 100644
index 6855071..0000000
--- a/src/xlsx/xlsxabstractchart.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/****************************************************************************
-** Copyright (c) 2013-2014 Debao Zhang <hello@debao.me>
-** All right reserved.
-**
-** Permission is hereby granted, free of charge, to any person obtaining
-** a copy of this software and associated documentation files (the
-** "Software"), to deal in the Software without restriction, including
-** without limitation the rights to use, copy, modify, merge, publish,
-** distribute, sublicense, and/or sell copies of the Software, and to
-** permit persons to whom the Software is furnished to do so, subject to
-** the following conditions:
-**
-** The above copyright notice and this permission notice shall be
-** included in all copies or substantial portions of the Software.
-**
-** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-** NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-** LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-** OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-** WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-**
-****************************************************************************/
-
-#ifndef QXLSX_XLSXABSTRACTCHART_H
-#define QXLSX_XLSXABSTRACTCHART_H
-
-#include "xlsxglobal.h"
-
-#include <QString>
-
-class QXmlStreamReader;
-class QXmlStreamWriter;
-
-QT_BEGIN_NAMESPACE_XLSX
-
-class ChartFile;
-class AbstractChartPrivate;
-class CellRange;
-
-class Q_XLSX_EXPORT AbstractChart
-{
-    Q_DECLARE_PRIVATE(AbstractChart)
-
-public:
-    AbstractChart();
-    virtual ~AbstractChart();
-
-    void addSeries(const CellRange &range, const QString &sheet=QString());
-
-protected:
-    friend class ChartFile;
-    AbstractChart(AbstractChartPrivate *d);
-    virtual bool loadXxxChartFromXml(QXmlStreamReader &reader) = 0;
-    virtual void saveXxxChartToXml(QXmlStreamWriter &writer) const = 0;
-
-    bool loadAxisFromXml(QXmlStreamReader &reader);
-    void saveAxisToXml(QXmlStreamWriter &writer) const;
-
-    bool loadLegendFromXml(QXmlStreamReader &reader);
-    void saveLegendToXml(QXmlStreamWriter &writer) const;
-
-    AbstractChartPrivate * d_ptr;
-};
-
-QT_END_NAMESPACE_XLSX
-
-#endif // QXLSX_XLSXABSTRACTCHART_H
diff --git a/src/xlsx/xlsxchart.cpp b/src/xlsx/xlsxchart.cpp
new file mode 100644
index 0000000..130e89b
--- /dev/null
+++ b/src/xlsx/xlsxchart.cpp
@@ -0,0 +1,374 @@
+/****************************************************************************
+** Copyright (c) 2013-2014 Debao Zhang <hello@debao.me>
+** All right reserved.
+**
+** Permission is hereby granted, free of charge, to any person obtaining
+** a copy of this software and associated documentation files (the
+** "Software"), to deal in the Software without restriction, including
+** without limitation the rights to use, copy, modify, merge, publish,
+** distribute, sublicense, and/or sell copies of the Software, and to
+** permit persons to whom the Software is furnished to do so, subject to
+** the following conditions:
+**
+** The above copyright notice and this permission notice shall be
+** included in all copies or substantial portions of the Software.
+**
+** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+** NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+** LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+** OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+** WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+**
+****************************************************************************/
+
+#include "xlsxchart_p.h"
+#include "xlsxworksheet.h"
+#include "xlsxcellrange.h"
+#include "xlsxutility_p.h"
+
+#include <QIODevice>
+#include <QXmlStreamReader>
+#include <QXmlStreamWriter>
+
+QT_BEGIN_NAMESPACE_XLSX
+
+ChartPrivate::ChartPrivate(Chart *q)
+    :OOXmlFilePrivate(q)
+{
+
+}
+
+ChartPrivate::~ChartPrivate()
+{
+
+}
+
+/*!
+ * \class Chart
+ *
+ * Main class for the charts.
+ */
+
+Chart::Chart(Worksheet *parent)
+    :OOXmlFile(new ChartPrivate(this))
+{
+    d_func()->sheet = parent;
+}
+
+Chart::~Chart()
+{
+}
+
+void Chart::addSeries(const CellRange &range, Worksheet *sheet)
+{
+    Q_D(Chart);
+
+    QString serRef = sheet ? sheet->sheetName() : d->sheet->sheetName();
+
+    serRef += QLatin1String("!");
+    serRef += xl_rowcol_to_cell(range.firstRow(), range.firstColumn(), true, true);
+    serRef += QLatin1String(":");
+    serRef += xl_rowcol_to_cell(range.lastRow(), range.lastColumn(), true, true);
+
+    XlsxSeries *series = new XlsxSeries;
+    series->numRef = serRef;
+
+    d->seriesList.append(QSharedPointer<XlsxSeries>(series));
+}
+
+/*!
+ * Set the type of the chart to \a type
+ */
+void Chart::setChartType(ChartType type)
+{
+    Q_D(Chart);
+    d->chartType = type;
+}
+
+void Chart::setChartStyle(int id)
+{
+    Q_UNUSED(id)
+    //!Todo
+}
+
+/*!
+ * \internal
+ */
+void Chart::saveToXmlFile(QIODevice *device) const
+{
+    Q_D(const Chart);
+
+    QXmlStreamWriter writer(device);
+
+    writer.writeStartDocument(QStringLiteral("1.0"), true);
+    writer.writeStartElement(QStringLiteral("c:chartSpace"));
+    writer.writeAttribute(QStringLiteral("xmlns:c"), QStringLiteral("http://schemas.openxmlformats.org/drawingml/2006/chart"));
+    writer.writeAttribute(QStringLiteral("xmlns:a"), QStringLiteral("http://schemas.openxmlformats.org/drawingml/2006/main"));
+    writer.writeAttribute(QStringLiteral("xmlns:r"), QStringLiteral("http://schemas.openxmlformats.org/officeDocument/2006/relationships"));
+
+    d->saveXmlChart(writer);
+
+    writer.writeEndElement();//c:chartSpace
+    writer.writeEndDocument();
+}
+
+/*!
+ * \internal
+ */
+bool Chart::loadFromXmlFile(QIODevice *device)
+{
+    Q_D(Chart);
+
+    QXmlStreamReader reader(device);
+    while (!reader.atEnd()) {
+        reader.readNextStartElement();
+        if (reader.tokenType() == QXmlStreamReader::StartElement) {
+            if (reader.name() == QLatin1String("chart")) {
+                if (!d->loadXmlChart(reader))
+                    return false;
+            }
+        }
+    }
+    return true;
+}
+
+bool ChartPrivate::loadXmlChart(QXmlStreamReader &reader)
+{
+    Q_ASSERT(reader.name() == QLatin1String("chart"));
+
+    while (!reader.atEnd()) {
+        reader.readNextStartElement();
+        if (reader.tokenType() == QXmlStreamReader::StartElement) {
+            if (reader.name() == QLatin1String("plotArea")) {
+                if (!loadXmlPlotArea(reader))
+                    return false;
+            } else if (reader.name() == QLatin1String("legend")) {
+                //!Todo
+            }
+        } else if (reader.tokenType() == QXmlStreamReader::EndElement &&
+                   reader.name() == QLatin1String("chart")) {
+            break;
+        }
+    }
+    return true;
+}
+
+bool ChartPrivate::loadXmlPlotArea(QXmlStreamReader &reader)
+{
+    Q_ASSERT(reader.name() == QLatin1String("plotArea"));
+
+    while (!reader.atEnd()) {
+        reader.readNextStartElement();
+        if (reader.tokenType() == QXmlStreamReader::StartElement) {
+            if (reader.name() == QLatin1String("layout")) {
+                //!ToDo
+            } else if (reader.name().endsWith(QLatin1String("Chart"))) {
+                //For pieChart, barChart, ...
+                loadXmlXxxChart(reader);
+            } else if (reader.name().endsWith(QLatin1String("Ax"))) {
+                //For valAx, catAx, serAx, dateAx
+                loadXmlAxis(reader);
+            }
+
+        } else if (reader.tokenType() == QXmlStreamReader::EndElement &&
+                   reader.name() == QLatin1String("plotArea")) {
+            break;
+        }
+    }
+    return true;
+}
+
+bool ChartPrivate::loadXmlXxxChart(QXmlStreamReader &reader)
+{
+    QStringRef name = reader.name();
+    if (name == QLatin1String("pieChart")) chartType = Chart::CT_Pie;
+    else if (name == QLatin1String("barChart")) chartType = Chart::CT_Bar;
+
+
+    while (!reader.atEnd()) {
+        reader.readNextStartElement();
+        if (reader.tokenType() == QXmlStreamReader::StartElement) {
+            if (reader.name() == QLatin1String("ser")) {
+                loadXmlSer(reader);
+            } else if (reader.name() == QLatin1String("axId")) {
+
+            }
+        } else if (reader.tokenType() == QXmlStreamReader::EndElement
+                   && reader.name() == name) {
+            break;
+        }
+    }
+    return true;
+}
+
+bool ChartPrivate::loadXmlSer(QXmlStreamReader &reader)
+{
+    Q_ASSERT(reader.name() == QLatin1String("ser"));
+
+    while (!reader.atEnd()) {
+        reader.readNextStartElement();
+        if (reader.tokenType() == QXmlStreamReader::StartElement) {
+            if (reader.name() == QLatin1String("f")) {
+                XlsxSeries *series = new XlsxSeries;
+                series->numRef = reader.readElementText();
+                seriesList.append(QSharedPointer<XlsxSeries>(series));
+            }
+        } else if (reader.tokenType() == QXmlStreamReader::EndElement
+                   && reader.name() == QLatin1String("ser")) {
+            break;
+        }
+    }
+
+    return true;
+}
+
+void ChartPrivate::saveXmlChart(QXmlStreamWriter &writer) const
+{
+    writer.writeStartElement(QStringLiteral("c:chart"));
+    writer.writeStartElement(QStringLiteral("c:plotArea"));
+    saveXmlXxxChart(writer);
+    saveXmlAxes(writer);
+    writer.writeEndElement(); //plotArea
+
+//    saveXmlLegend(writer);
+
+    writer.writeEndElement(); //chart
+}
+
+void ChartPrivate::saveXmlXxxChart(QXmlStreamWriter &writer) const
+{
+    QString t;
+    switch (chartType) {
+    case Chart::CT_Pie: t = QStringLiteral("c:pieChart"); break;
+    case Chart::CT_Bar: t = QStringLiteral("c:barChart"); break;
+    default: break;
+    }
+
+    writer.writeStartElement(t); //pieChart, barChart, ...
+
+    if (chartType==Chart::CT_Bar || chartType==Chart::CT_Bar3D) {
+        writer.writeEmptyElement(QStringLiteral("c:barDir"));
+        writer.writeAttribute(QStringLiteral("val"), QStringLiteral("col"));
+    }
+
+    writer.writeEmptyElement(QStringLiteral("c:varyColors"));
+    writer.writeAttribute(QStringLiteral("val"), QStringLiteral("1"));
+    for (int i=0; i<seriesList.size(); ++i)
+        saveXmlSer(writer, seriesList[i].data(), i);
+
+    if (chartType == Chart::CT_Bar) {
+        if (axisList.isEmpty()) {
+            const_cast<ChartPrivate*>(this)->axisList.append(QSharedPointer<XlsxAxis>(new XlsxAxis(XlsxAxis::T_Cat, XlsxAxis::Left)));
+            const_cast<ChartPrivate*>(this)->axisList.append(QSharedPointer<XlsxAxis>(new XlsxAxis(XlsxAxis::T_Val, XlsxAxis::Bottom)));
+        }
+
+        Q_ASSERT(axisList.size()==2);
+        for (int i=0; i<axisList.size(); ++i) {
+            writer.writeEmptyElement(QStringLiteral("c:axId"));
+            writer.writeAttribute(QStringLiteral("val"), QString::number(i+1));
+        }
+    }
+
+    writer.writeEndElement(); //pieChart, barChart, ...
+}
+
+void ChartPrivate::saveXmlSer(QXmlStreamWriter &writer, XlsxSeries *ser, int id) const
+{
+    writer.writeStartElement(QStringLiteral("c:ser"));
+    writer.writeEmptyElement(QStringLiteral("c:idx"));
+    writer.writeAttribute(QStringLiteral("val"), QString::number(id));
+    writer.writeEmptyElement(QStringLiteral("c:order"));
+    writer.writeAttribute(QStringLiteral("val"), QString::number(id));
+    writer.writeStartElement(QStringLiteral("c:val"));
+    writer.writeStartElement(QStringLiteral("c:numRef"));
+    writer.writeTextElement(QStringLiteral("c:f"), ser->numRef);
+    writer.writeEndElement();//c:numRef
+    writer.writeEndElement();//c:val
+    writer.writeEndElement();//c:ser
+}
+
+bool ChartPrivate::loadXmlAxis(QXmlStreamReader &reader)
+{
+    Q_ASSERT(reader.name().endsWith(QLatin1String("Ax")));
+    QString name = reader.name().toString();
+
+    XlsxAxis *axis = new XlsxAxis;
+    if (name == QLatin1String("valAx"))
+        axis->type = XlsxAxis::T_Val;
+    else if (name == QLatin1String("catAx"))
+        axis->type = XlsxAxis::T_Cat;
+    else if (name == QLatin1String("serAx"))
+        axis->type = XlsxAxis::T_Ser;
+    else
+        axis->type = XlsxAxis::T_Date;
+
+    axisList.append(QSharedPointer<XlsxAxis>(axis));
+
+    while (!reader.atEnd()) {
+        reader.readNextStartElement();
+        if (reader.tokenType() == QXmlStreamReader::StartElement) {
+            if (reader.name() == QLatin1String("axPos")) {
+                QXmlStreamAttributes attrs = reader.attributes();
+                QStringRef pos = attrs.value(QLatin1String("val"));
+                if (pos==QLatin1String("l"))
+                    axis->axisPos = XlsxAxis::Left;
+                else if (pos==QLatin1String("r"))
+                    axis->axisPos = XlsxAxis::Right;
+                else if (pos==QLatin1String("b"))
+                    axis->axisPos = XlsxAxis::Bottom;
+                else
+                    axis->axisPos = XlsxAxis::Top;
+            }
+        } else if (reader.tokenType() == QXmlStreamReader::EndElement
+                   && reader.name() == name) {
+            break;
+        }
+    }
+
+    return true;
+}
+
+void ChartPrivate::saveXmlAxes(QXmlStreamWriter &writer) const
+{
+    for (int i=0; i<axisList.size(); ++i) {
+        XlsxAxis *axis = axisList[i].data();
+        QString name;
+        switch (axis->type) {
+        case XlsxAxis::T_Cat: name = QStringLiteral("c:catAx"); break;
+        case XlsxAxis::T_Val: name = QStringLiteral("c:valAx"); break;
+        case XlsxAxis::T_Ser: name = QStringLiteral("c:serAx"); break;
+        case XlsxAxis::T_Date: name = QStringLiteral("c:dateAx"); break;
+        default: break;
+        }
+
+        QString pos;
+        switch (axis->axisPos) {
+        case XlsxAxis::Top: pos = QStringLiteral("t"); break;
+        case XlsxAxis::Bottom: pos = QStringLiteral("b"); break;
+        case XlsxAxis::Left: pos = QStringLiteral("l"); break;
+        case XlsxAxis::Right: pos = QStringLiteral("r"); break;
+        default: break;
+        }
+
+        writer.writeStartElement(name);
+        writer.writeEmptyElement(QStringLiteral("c:axId"));
+        writer.writeAttribute(QStringLiteral("val"), QString::number(i+1));
+
+        writer.writeStartElement(QStringLiteral("c:scaling"));
+        writer.writeEmptyElement(QStringLiteral("c:orientation"));
+        writer.writeAttribute(QStringLiteral("val"), QStringLiteral("minMax"));
+        writer.writeEndElement();//c:scaling
+
+        writer.writeEmptyElement(QStringLiteral("c:axPos"));
+        writer.writeAttribute(QStringLiteral("val"), pos);
+
+        writer.writeEmptyElement(QStringLiteral("c:crossAx"));
+        writer.writeAttribute(QStringLiteral("val"), QString::number(i%2==0 ? i+2 : i));
+
+        writer.writeEndElement();//name
+    }
+}
+
+QT_END_NAMESPACE_XLSX
diff --git a/src/xlsx/xlsxchartfile_p.h b/src/xlsx/xlsxchart.h
similarity index 62%
rename from src/xlsx/xlsxchartfile_p.h
rename to src/xlsx/xlsxchart.h
index dde044f..18ea3ba 100644
--- a/src/xlsx/xlsxchartfile_p.h
+++ b/src/xlsx/xlsxchart.h
@@ -23,19 +23,8 @@
 **
 ****************************************************************************/
 
-#ifndef QXLSX_CHARTFILE_P_H
-#define QXLSX_CHARTFILE_P_H
-
-//
-//  W A R N I N G
-//  -------------
-//
-// This file is not part of the Qt Xlsx API.  It exists for the convenience
-// of the Qt Xlsx.  This header file may change from
-// version to version without notice, or even be removed.
-//
-// We mean it.
-//
+#ifndef QXLSX_CHART_H
+#define QXLSX_CHART_H
 
 #include "xlsxooxmlfile.h"
 
@@ -44,35 +33,54 @@
 class QXmlStreamReader;
 class QXmlStreamWriter;
 
-namespace QXlsx {
+QT_BEGIN_NAMESPACE_XLSX
 
-class AbstractChart;
+class Worksheet;
+class ChartPrivate;
+class CellRange;
+class DrawingAnchor;
 
-class ChartFile : public OOXmlFile
+class Q_XLSX_EXPORT Chart : public OOXmlFile
 {
+    Q_DECLARE_PRIVATE(Chart)
+
 public:
-    ChartFile();
-    ~ChartFile();
+    enum ChartType {
+        CT_Area,
+        CT_Area3D,
+        CT_Line,
+        CT_Line3D,
+        CT_Stock,
+        CT_Radar,
+        CT_Scatter,
+        CT_Pie,
+        CT_Pie3D,
+        CT_Doughnut,
+        CT_Bar,
+        CT_Bar3D,
+        CT_OfPie,
+        CT_Surface,
+        CT_Surface3D,
+        CT_Bubble
+    };
+
+    ~Chart();
 
-    AbstractChart *chart() const;
-    void setChart(AbstractChart *chart);
+    void addSeries(const CellRange &range, Worksheet *sheet=0);
+    void setChartType(ChartType type);
+    void setChartStyle(int id);
 
     void saveToXmlFile(QIODevice *device) const;
     bool loadFromXmlFile(QIODevice *device);
 
 private:
-    bool loadXmlChart(QXmlStreamReader &reader);
-    bool loadXmlPlotArea(QXmlStreamReader &reader);
-    AbstractChart *loadXmlPieChart(QXmlStreamReader &reader);
+    friend class Worksheet;
+    friend class DrawingAnchor;
 
-    bool saveXmlChart(QXmlStreamWriter &writer) const;
-
-    friend class AbstractChart;
-    // Don't use sharedpointer here,
-    // in case some users create AbstractChart in the stack.
-    AbstractChart *m_chart;
+    Chart(Worksheet *parent);
 };
 
-} // namespace QXlsx
+QT_END_NAMESPACE_XLSX
+
+#endif // QXLSX_CHART_H
 
-#endif // QXLSX_CHARTFILE_P_H
diff --git a/src/xlsx/xlsxabstractchart_p.h b/src/xlsx/xlsxchart_p.h
similarity index 70%
rename from src/xlsx/xlsxabstractchart_p.h
rename to src/xlsx/xlsxchart_p.h
index 29a02ca..b0d1fa5 100644
--- a/src/xlsx/xlsxabstractchart_p.h
+++ b/src/xlsx/xlsxchart_p.h
@@ -23,8 +23,8 @@
 **
 ****************************************************************************/
 
-#ifndef XLSXABSTRACTCHART_P_H
-#define XLSXABSTRACTCHART_P_H
+#ifndef QXLSX_CHART_P_H
+#define QXLSX_CHART_P_H
 
 //
 //  W A R N I N G
@@ -37,11 +37,15 @@
 // We mean it.
 //
 
-#include "xlsxabstractchart.h"
-#include <QList>
+#include "xlsxooxmlfile_p.h"
+#include "xlsxchart.h"
+
 #include <QSharedPointer>
 
-QT_BEGIN_NAMESPACE_XLSX
+class QXmlStreamReader;
+class QXmlStreamWriter;
+
+namespace QXlsx {
 
 class XlsxSeries
 {
@@ -82,20 +86,33 @@ public:
     Pos axisPos; //l,r,b,t
 };
 
-class AbstractChartPrivate
+class ChartPrivate : public OOXmlFilePrivate
 {
-    Q_DECLARE_PUBLIC(AbstractChart)
+    Q_DECLARE_PUBLIC(Chart)
+
 public:
-    AbstractChartPrivate(AbstractChart *chart);
-    virtual ~AbstractChartPrivate();
+    ChartPrivate(Chart *q);
+    ~ChartPrivate();
 
+    bool loadXmlChart(QXmlStreamReader &reader);
+    bool loadXmlPlotArea(QXmlStreamReader &reader);
+    bool loadXmlXxxChart(QXmlStreamReader &reader);
     bool loadXmlSer(QXmlStreamReader &reader);
+    bool loadXmlAxis(QXmlStreamReader &reader);
+
+    void saveXmlChart(QXmlStreamWriter &writer) const;
+    void saveXmlXxxChart(QXmlStreamWriter &writer) const;
+    void saveXmlSer(QXmlStreamWriter &writer, XlsxSeries *ser, int id) const;
+    void saveXmlAxes(QXmlStreamWriter &writer) const;
+
+    Chart::ChartType chartType;
 
     QList<QSharedPointer<XlsxSeries> > seriesList;
-    QList<QSharedPointer<XlsxAxis>> axisList;
-    ChartFile *cf;
-    AbstractChart *q_ptr;
+    QList<QSharedPointer<XlsxAxis> > axisList;
+
+    Worksheet *sheet;
 };
 
-QT_END_NAMESPACE_XLSX
-#endif // XLSXABSTRACTCHART_P_H
+} // namespace QXlsx
+
+#endif // QXLSX_CHART_P_H
diff --git a/src/xlsx/xlsxchartfile.cpp b/src/xlsx/xlsxchartfile.cpp
deleted file mode 100644
index 92358b4..0000000
--- a/src/xlsx/xlsxchartfile.cpp
+++ /dev/null
@@ -1,161 +0,0 @@
-/****************************************************************************
-** Copyright (c) 2013-2014 Debao Zhang <hello@debao.me>
-** All right reserved.
-**
-** Permission is hereby granted, free of charge, to any person obtaining
-** a copy of this software and associated documentation files (the
-** "Software"), to deal in the Software without restriction, including
-** without limitation the rights to use, copy, modify, merge, publish,
-** distribute, sublicense, and/or sell copies of the Software, and to
-** permit persons to whom the Software is furnished to do so, subject to
-** the following conditions:
-**
-** The above copyright notice and this permission notice shall be
-** included in all copies or substantial portions of the Software.
-**
-** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-** NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-** LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-** OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-** WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-**
-****************************************************************************/
-
-#include "xlsxchartfile_p.h"
-#include "xlsxabstractchart.h"
-#include "xlsxabstractchart_p.h"
-#include "xlsxpiechart.h"
-#include "xlsxbarchart.h"
-#include <QIODevice>
-#include <QXmlStreamReader>
-#include <QXmlStreamWriter>
-
-namespace QXlsx {
-
-ChartFile::ChartFile()
-{
-}
-
-ChartFile::~ChartFile()
-{
-    if (m_chart)
-        delete m_chart;
-}
-
-AbstractChart* ChartFile::chart() const
-{
-    return m_chart;
-}
-
-void ChartFile::setChart(AbstractChart *chart)
-{
-    m_chart = chart;
-    chart->d_func()->cf = this;
-}
-
-void ChartFile::saveToXmlFile(QIODevice *device) const
-{
-    QXmlStreamWriter writer(device);
-
-    writer.writeStartDocument(QStringLiteral("1.0"), true);
-    writer.writeStartElement(QStringLiteral("c:chartSpace"));
-    writer.writeAttribute(QStringLiteral("xmlns:c"), QStringLiteral("http://schemas.openxmlformats.org/drawingml/2006/chart"));
-    writer.writeAttribute(QStringLiteral("xmlns:a"), QStringLiteral("http://schemas.openxmlformats.org/drawingml/2006/main"));
-    writer.writeAttribute(QStringLiteral("xmlns:r"), QStringLiteral("http://schemas.openxmlformats.org/officeDocument/2006/relationships"));
-
-    saveXmlChart(writer);
-
-    writer.writeEndElement();//c:chartSpace
-    writer.writeEndDocument();
-}
-
-bool ChartFile::loadFromXmlFile(QIODevice *device)
-{
-    QXmlStreamReader reader(device);
-    while (!reader.atEnd()) {
-        reader.readNextStartElement();
-        if (reader.tokenType() == QXmlStreamReader::StartElement) {
-            if (reader.name() == QLatin1String("chart")) {
-                if (!loadXmlChart(reader))
-                    return false;
-            }
-        }
-    }
-    return true;
-}
-
-bool ChartFile::loadXmlChart(QXmlStreamReader &reader)
-{
-    Q_ASSERT(reader.name() == QLatin1String("chart"));
-
-    while (!reader.atEnd()) {
-        reader.readNextStartElement();
-        if (reader.tokenType() == QXmlStreamReader::StartElement) {
-            if (reader.name() == QLatin1String("plotArea")) {
-                if (!loadXmlPlotArea(reader))
-                    return false;
-            } else if (reader.name() == QLatin1String("legend")) {
-                m_chart->loadLegendFromXml(reader);
-            }
-        } else if (reader.tokenType() == QXmlStreamReader::EndElement &&
-                   reader.name() == QLatin1String("chart")) {
-            break;
-        }
-    }
-    return true;
-}
-
-bool ChartFile::loadXmlPlotArea(QXmlStreamReader &reader)
-{
-    Q_ASSERT(reader.name() == QLatin1String("plotArea"));
-
-    while (!reader.atEnd()) {
-        reader.readNextStartElement();
-        if (reader.tokenType() == QXmlStreamReader::StartElement) {
-            if (reader.name() == QLatin1String("layout")) {
-                //...
-            } else if (reader.name().endsWith(QLatin1String("Chart"))) {
-                //!Todo: each plotArea can have more than one xxxChart
-                AbstractChart *chart = 0;
-                if (reader.name() == QLatin1String("pieChart")) {
-                    chart = new PieChart;
-                } else if (reader.name() == QLatin1String("barChart")) {
-                    chart = new BarChart;
-                } else {
-                    //Not support
-                    return false;
-                }
-                if (chart) {
-                    chart->loadXxxChartFromXml(reader);
-                    setChart(chart);
-                }
-            } else if (reader.name().endsWith(QLatin1String("Ax"))) {
-                //For valAx, catAx, serAx, dateAx
-                m_chart->loadAxisFromXml(reader);
-            }
-
-        } else if (reader.tokenType() == QXmlStreamReader::EndElement &&
-                   reader.name() == QLatin1String("plotArea")) {
-            break;
-        }
-    }
-    return true;
-}
-
-bool ChartFile::saveXmlChart(QXmlStreamWriter &writer) const
-{
-    writer.writeStartElement(QStringLiteral("c:chart"));
-    writer.writeStartElement(QStringLiteral("c:plotArea"));
-    m_chart->saveXxxChartToXml(writer);
-    m_chart->saveAxisToXml(writer);
-    writer.writeEndElement(); //plotArea
-
-    m_chart->saveLegendToXml(writer);
-
-    writer.writeEndElement(); //chart
-    return true;
-}
-
-} // namespace QXlsx
diff --git a/src/xlsx/xlsxdocument.cpp b/src/xlsx/xlsxdocument.cpp
index 0259260..0d19661 100644
--- a/src/xlsx/xlsxdocument.cpp
+++ b/src/xlsx/xlsxdocument.cpp
@@ -38,7 +38,7 @@
 #include "xlsxworkbook_p.h"
 #include "xlsxdrawing_p.h"
 #include "xlsxmediafile_p.h"
-#include "xlsxchartfile_p.h"
+#include "xlsxchart.h"
 #include "xlsxzipreader_p.h"
 #include "xlsxzipwriter_p.h"
 
@@ -199,9 +199,9 @@ bool DocumentPrivate::loadPackage(QIODevice *device)
     }
 
     //load charts
-    QList<QSharedPointer<ChartFile> > chartFileToLoad = workbook->chartFiles();
+    QList<QSharedPointer<Chart> > chartFileToLoad = workbook->chartFiles();
     for (int i=0; i<chartFileToLoad.size(); ++i) {
-        QSharedPointer<ChartFile> cf = chartFileToLoad[i];
+        QSharedPointer<Chart> cf = chartFileToLoad[i];
         cf->loadFromXmlData(zipReader.fileData(cf->filePath()));
     }
 
@@ -285,7 +285,7 @@ bool DocumentPrivate::savePackage(QIODevice *device) const
     // save chart xml files
     for (int i=0; i<workbook->chartFiles().size(); ++i) {
         contentTypes.addChartName(QStringLiteral("chart%1").arg(i+1));
-        QSharedPointer<ChartFile> cf = workbook->chartFiles()[i];
+        QSharedPointer<Chart> cf = workbook->chartFiles()[i];
         zipWriter.addFile(QStringLiteral("xl/charts/chart%1.xml").arg(i+1), cf->saveToXmlData());
     }
 
@@ -403,6 +403,11 @@ bool Document::insertImage(int row, int column, const QImage &image)
     return currentWorksheet()->insertImage(row, column, image);
 }
 
+Chart *Document::insertChart(int row, int col, const QSize &size)
+{
+    return currentWorksheet()->insertChart(row, col, size);
+}
+
 /*!
  * \brief Insert an \a image to current active worksheet to the position \a row, \a column with the given
  * \a xOffset, \a yOffset, \a xScale and \a yScale.
diff --git a/src/xlsx/xlsxdocument.h b/src/xlsx/xlsxdocument.h
index f512616..9d1db41 100644
--- a/src/xlsx/xlsxdocument.h
+++ b/src/xlsx/xlsxdocument.h
@@ -41,6 +41,7 @@ class Cell;
 class CellRange;
 class DataValidation;
 class ConditionalFormatting;
+class Chart;
 
 class DocumentPrivate;
 class Q_XLSX_EXPORT Document : public QObject
@@ -60,6 +61,7 @@ public:
     QVariant read(int row, int col) const;
     bool insertImage(int row, int col, const QImage &image);
     Q_DECL_DEPRECATED int insertImage(int row, int column, const QImage &image, double xOffset, double yOffset, double xScale=1, double yScale=1);
+    Chart *insertChart(int row, int col, const QSize &size);
     int mergeCells(const CellRange &range, const Format &format=Format());
     int mergeCells(const QString &range, const Format &format=Format());
     int unmergeCells(const CellRange &range);
diff --git a/src/xlsx/xlsxdrawing.cpp b/src/xlsx/xlsxdrawing.cpp
index 644930d..20dc71f 100644
--- a/src/xlsx/xlsxdrawing.cpp
+++ b/src/xlsx/xlsxdrawing.cpp
@@ -25,6 +25,7 @@
 
 #include "xlsxdrawing_p.h"
 #include "xlsxdrawinganchor_p.h"
+#include "xlsxworksheet.h"
 
 #include <QXmlStreamWriter>
 #include <QXmlStreamReader>
@@ -32,10 +33,10 @@
 
 namespace QXlsx {
 
-Drawing::Drawing(Workbook *workbook)
-    :workbook(workbook)
+Drawing::Drawing(Worksheet *worksheet)
+    :worksheet(worksheet)
 {
-
+    workbook = worksheet->workbook();
 }
 
 Drawing::~Drawing()
diff --git a/src/xlsx/xlsxdrawing_p.h b/src/xlsx/xlsxdrawing_p.h
index 4016ae9..7379669 100644
--- a/src/xlsx/xlsxdrawing_p.h
+++ b/src/xlsx/xlsxdrawing_p.h
@@ -51,16 +51,18 @@ namespace QXlsx {
 
 class DrawingAnchor;
 class Workbook;
+class Worksheet;
 class MediaFile;
 
 class Drawing : public OOXmlFile
 {
 public:
-    Drawing(Workbook *workbook);
+    Drawing(Worksheet *workbook);
     ~Drawing();
     void saveToXmlFile(QIODevice *device) const;
     bool loadFromXmlFile(QIODevice *device);
 
+    Worksheet *worksheet;
     Workbook *workbook;
     QList<DrawingAnchor *> anchors;
     mutable Relationships relationships;
diff --git a/src/xlsx/xlsxdrawinganchor.cpp b/src/xlsx/xlsxdrawinganchor.cpp
index 1b4fbdb..a22db3a 100644
--- a/src/xlsx/xlsxdrawinganchor.cpp
+++ b/src/xlsx/xlsxdrawinganchor.cpp
@@ -26,7 +26,7 @@
 #include "xlsxdrawinganchor_p.h"
 #include "xlsxdrawing_p.h"
 #include "xlsxmediafile_p.h"
-#include "xlsxchartfile_p.h"
+#include "xlsxchart.h"
 #include "xlsxworkbook.h"
 #include "xlsxutility_p.h"
 
@@ -95,7 +95,7 @@ void DrawingAnchor::setObjectPicture(const QImage &img)
     m_objectType = Picture;
 }
 
-void DrawingAnchor::setObjectGraphicFrame(QSharedPointer<ChartFile> chart)
+void DrawingAnchor::setObjectGraphicFrame(QSharedPointer<Chart> chart)
 {
     m_chartFile = chart;
     m_drawing->workbook->addChartFile(chart);
@@ -194,7 +194,7 @@ void DrawingAnchor::loadXmlObjectGraphicFrame(QXmlStreamReader &reader)
                 QString path = QDir::cleanPath(splitPath(m_drawing->filePath())[0] + QLatin1String("/") + name);
 
                 bool exist = false;
-                QList<QSharedPointer<ChartFile> > cfs = m_drawing->workbook->chartFiles();
+                QList<QSharedPointer<Chart> > cfs = m_drawing->workbook->chartFiles();
                 for (int i=0; i<cfs.size(); ++i) {
                     if (cfs[i]->filePath() == path) {
                         //already exist
@@ -203,7 +203,7 @@ void DrawingAnchor::loadXmlObjectGraphicFrame(QXmlStreamReader &reader)
                     }
                 }
                 if (!exist) {
-                    m_chartFile = QSharedPointer<ChartFile> (new ChartFile);
+                    m_chartFile = QSharedPointer<Chart> (new Chart(m_drawing->worksheet));
                     m_chartFile->setFilePath(path);
                     m_drawing->workbook->addChartFile(m_chartFile);
                 }
diff --git a/src/xlsx/xlsxdrawinganchor_p.h b/src/xlsx/xlsxdrawinganchor_p.h
index d2924a1..2f38a91 100644
--- a/src/xlsx/xlsxdrawinganchor_p.h
+++ b/src/xlsx/xlsxdrawinganchor_p.h
@@ -40,7 +40,7 @@ namespace QXlsx {
 
 class Drawing;
 class MediaFile;
-class ChartFile;
+class Chart;
 
 //Helper class
 struct XlsxMarker
@@ -76,7 +76,7 @@ public:
     DrawingAnchor(Drawing *drawing, ObjectType objectType);
     virtual ~DrawingAnchor();
     void setObjectPicture(const QImage &img);
-    void setObjectGraphicFrame(QSharedPointer<ChartFile> chart);
+    void setObjectGraphicFrame(QSharedPointer<Chart> chart);
 
     virtual bool loadFromXml(QXmlStreamReader &reader) = 0;
     virtual void saveToXml(QXmlStreamWriter &writer) const = 0;
@@ -105,7 +105,7 @@ protected:
     Drawing *m_drawing;
     ObjectType m_objectType;
     QSharedPointer<MediaFile> m_pictureFile;
-    QSharedPointer<ChartFile> m_chartFile;
+    QSharedPointer<Chart> m_chartFile;
 
     int m_id;
 };
diff --git a/src/xlsx/xlsxpiechart.cpp b/src/xlsx/xlsxpiechart.cpp
deleted file mode 100644
index 580f003..0000000
--- a/src/xlsx/xlsxpiechart.cpp
+++ /dev/null
@@ -1,94 +0,0 @@
-/****************************************************************************
-** Copyright (c) 2013-2014 Debao Zhang <hello@debao.me>
-** All right reserved.
-**
-** Permission is hereby granted, free of charge, to any person obtaining
-** a copy of this software and associated documentation files (the
-** "Software"), to deal in the Software without restriction, including
-** without limitation the rights to use, copy, modify, merge, publish,
-** distribute, sublicense, and/or sell copies of the Software, and to
-** permit persons to whom the Software is furnished to do so, subject to
-** the following conditions:
-**
-** The above copyright notice and this permission notice shall be
-** included in all copies or substantial portions of the Software.
-**
-** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-** NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-** LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-** OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-** WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-**
-****************************************************************************/
-
-#include "xlsxpiechart.h"
-#include "xlsxpiechart_p.h"
-
-#include <QXmlStreamReader>
-#include <QXmlStreamWriter>
-
-QT_BEGIN_NAMESPACE_XLSX
-
-PieChartPrivate::PieChartPrivate(PieChart *chart)
-    : AbstractChartPrivate(chart)
-{
-
-}
-
-/*!
- * \class PieChart
- */
-
-PieChart::PieChart()
-    : AbstractChart(new PieChartPrivate(this))
-{
-}
-
-bool PieChart::loadXxxChartFromXml(QXmlStreamReader &reader)
-{
-    Q_ASSERT(reader.name() == QLatin1String("pieChart"));
-
-    Q_D(PieChart);
-
-    while (!reader.atEnd()) {
-        reader.readNextStartElement();
-        if (reader.tokenType() == QXmlStreamReader::StartElement) {
-            if (reader.name() == QLatin1String("ser")) {
-                d->loadXmlSer(reader);
-            }
-        } else if (reader.tokenType() == QXmlStreamReader::EndElement
-                   && reader.name() == QLatin1String("pieChart")) {
-            break;
-        }
-    }
-    return true;
-}
-
-void PieChart::saveXxxChartToXml(QXmlStreamWriter &writer) const
-{
-    Q_D(const PieChart);
-
-    writer.writeStartElement(QStringLiteral("c:pieChart"));
-    writer.writeEmptyElement(QStringLiteral("c:varyColors"));
-    writer.writeAttribute(QStringLiteral("val"), QStringLiteral("1"));
-    for (int i=0; i<d->seriesList.size(); ++i) {
-        XlsxSeries *ser = d->seriesList[i].data();
-        writer.writeStartElement(QStringLiteral("c:ser"));
-        writer.writeEmptyElement(QStringLiteral("c:idx"));
-        writer.writeAttribute(QStringLiteral("val"), QString::number(i));
-        writer.writeEmptyElement(QStringLiteral("c:order"));
-        writer.writeAttribute(QStringLiteral("val"), QString::number(i));
-        writer.writeStartElement(QStringLiteral("c:val"));
-        writer.writeStartElement(QStringLiteral("c:numRef"));
-        writer.writeTextElement(QStringLiteral("c:f"), ser->numRef);
-        writer.writeEndElement();//c:numRef
-        writer.writeEndElement();//c:val
-        writer.writeEndElement();//c:ser
-    }
-
-    writer.writeEndElement(); //pieChart
-}
-
-QT_END_NAMESPACE_XLSX
diff --git a/src/xlsx/xlsxpiechart.h b/src/xlsx/xlsxpiechart.h
deleted file mode 100644
index 0fa9a8a..0000000
--- a/src/xlsx/xlsxpiechart.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/****************************************************************************
-** Copyright (c) 2013-2014 Debao Zhang <hello@debao.me>
-** All right reserved.
-**
-** Permission is hereby granted, free of charge, to any person obtaining
-** a copy of this software and associated documentation files (the
-** "Software"), to deal in the Software without restriction, including
-** without limitation the rights to use, copy, modify, merge, publish,
-** distribute, sublicense, and/or sell copies of the Software, and to
-** permit persons to whom the Software is furnished to do so, subject to
-** the following conditions:
-**
-** The above copyright notice and this permission notice shall be
-** included in all copies or substantial portions of the Software.
-**
-** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-** NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-** LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-** OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-** WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-**
-****************************************************************************/
-
-#ifndef QXLSX_XLSXPIECHART_H
-#define QXLSX_XLSXPIECHART_H
-
-#include "xlsxabstractchart.h"
-
-QT_BEGIN_NAMESPACE_XLSX
-
-class PieChartPrivate;
-
-class Q_XLSX_EXPORT PieChart : public AbstractChart
-{
-    Q_DECLARE_PRIVATE(PieChart)
-
-public:
-    PieChart();
-
-protected:
-    bool loadXxxChartFromXml(QXmlStreamReader &reader);
-    void saveXxxChartToXml(QXmlStreamWriter &writer) const;
-};
-
-QT_END_NAMESPACE_XLSX
-
-#endif // QXLSX_XLSXPIECHART_H
diff --git a/src/xlsx/xlsxpiechart_p.h b/src/xlsx/xlsxpiechart_p.h
deleted file mode 100644
index f15378c..0000000
--- a/src/xlsx/xlsxpiechart_p.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/****************************************************************************
-** Copyright (c) 2013-2014 Debao Zhang <hello@debao.me>
-** All right reserved.
-**
-** Permission is hereby granted, free of charge, to any person obtaining
-** a copy of this software and associated documentation files (the
-** "Software"), to deal in the Software without restriction, including
-** without limitation the rights to use, copy, modify, merge, publish,
-** distribute, sublicense, and/or sell copies of the Software, and to
-** permit persons to whom the Software is furnished to do so, subject to
-** the following conditions:
-**
-** The above copyright notice and this permission notice shall be
-** included in all copies or substantial portions of the Software.
-**
-** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-** NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-** LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-** OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-** WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-**
-****************************************************************************/
-
-#ifndef XLSXPIECHART_P_H
-#define XLSXPIECHART_P_H
-
-//
-//  W A R N I N G
-//  -------------
-//
-// This file is not part of the Qt Xlsx API.  It exists for the convenience
-// of the Qt Xlsx.  This header file may change from
-// version to version without notice, or even be removed.
-//
-// We mean it.
-//
-
-#include "xlsxpiechart.h"
-#include "xlsxabstractchart_p.h"
-
-QT_BEGIN_NAMESPACE_XLSX
-
-class PieChartPrivate : public AbstractChartPrivate
-{
-    Q_DECLARE_PUBLIC(PieChart)
-
-public:
-    PieChartPrivate(PieChart *chart);
-};
-
-QT_END_NAMESPACE_XLSX
-
-#endif // XLSXPIECHART_P_H
diff --git a/src/xlsx/xlsxworkbook.cpp b/src/xlsx/xlsxworkbook.cpp
index a352d4d..c38a740 100755
--- a/src/xlsx/xlsxworkbook.cpp
+++ b/src/xlsx/xlsxworkbook.cpp
@@ -583,7 +583,7 @@ void Workbook::addMediaFile(QSharedPointer<MediaFile> media, bool force)
 /*!
  * \internal
  */
-QList<QSharedPointer<ChartFile> > Workbook::chartFiles() const
+QList<QSharedPointer<Chart> > Workbook::chartFiles() const
 {
     Q_D(const Workbook);
 
@@ -593,7 +593,7 @@ QList<QSharedPointer<ChartFile> > Workbook::chartFiles() const
 /*!
  * \internal
  */
-void Workbook::addChartFile(QSharedPointer<ChartFile> chart)
+void Workbook::addChartFile(QSharedPointer<Chart> chart)
 {
     Q_D(Workbook);
 
diff --git a/src/xlsx/xlsxworkbook.h b/src/xlsx/xlsxworkbook.h
index 4ccb213..9e69a83 100755
--- a/src/xlsx/xlsxworkbook.h
+++ b/src/xlsx/xlsxworkbook.h
@@ -44,7 +44,7 @@ class Theme;
 class Relationships;
 class DocumentPrivate;
 class MediaFile;
-class ChartFile;
+class Chart;
 
 class WorkbookPrivate;
 class Q_XLSX_EXPORT Workbook : public OOXmlFile
@@ -81,8 +81,8 @@ public:
     //internal used member
     void addMediaFile(QSharedPointer<MediaFile> media, bool force=false);
     QList<QSharedPointer<MediaFile> > mediaFiles() const;
-    void addChartFile(QSharedPointer<ChartFile> chartFile);
-    QList<QSharedPointer<ChartFile> > chartFiles() const;
+    void addChartFile(QSharedPointer<Chart> chartFile);
+    QList<QSharedPointer<Chart> > chartFiles() const;
 
 private:
     friend class Worksheet;
diff --git a/src/xlsx/xlsxworkbook_p.h b/src/xlsx/xlsxworkbook_p.h
index 9e8c12a..1f40bbc 100644
--- a/src/xlsx/xlsxworkbook_p.h
+++ b/src/xlsx/xlsxworkbook_p.h
@@ -88,7 +88,7 @@ public:
     QSharedPointer<Styles> styles;
     QSharedPointer<Theme> theme;
     QList<QSharedPointer<MediaFile> > mediaFiles;
-    QList<QSharedPointer<ChartFile> > chartFiles;
+    QList<QSharedPointer<Chart> > chartFiles;
     QList<XlsxDefineNameData> definedNamesList;
 
     QList<XlsxSheetItemInfo> sheetItemInfoList;//Data from xml file
diff --git a/src/xlsx/xlsxworksheet.cpp b/src/xlsx/xlsxworksheet.cpp
index 3b21af4..1e41347 100755
--- a/src/xlsx/xlsxworksheet.cpp
+++ b/src/xlsx/xlsxworksheet.cpp
@@ -37,8 +37,7 @@
 #include "xlsxcellrange.h"
 #include "xlsxconditionalformatting_p.h"
 #include "xlsxdrawinganchor_p.h"
-#include "xlsxabstractchart.h"
-#include "xlsxchartfile_p.h"
+#include "xlsxchart.h"
 
 #include <QVariant>
 #include <QDateTime>
@@ -1025,7 +1024,7 @@ bool Worksheet::insertImage(int row, int column, const QImage &image)
         return false;
 
     if (!d->drawing)
-        d->drawing = QSharedPointer<Drawing>(new Drawing(d->workbook));
+        d->drawing = QSharedPointer<Drawing>(new Drawing(this));
 
     DrawingOneCellAnchor *anchor = new DrawingOneCellAnchor(d->drawing.data(), DrawingAnchor::Picture);
 
@@ -1046,16 +1045,12 @@ int Worksheet::insertImage(int row, int column, const QImage &image, const QPoin
     return insertImage(row, column, image);
 }
 
-bool Worksheet::insertChart(int row, int column, AbstractChart *chart, const QSize &size)
+Chart *Worksheet::insertChart(int row, int column, const QSize &size)
 {
     Q_D(Worksheet);
-    for (int i=0; i< d->workbook->chartFiles().size(); ++i) {
-        if (d->workbook->chartFiles()[i]->chart() == chart)
-            return false;
-    }
 
     if (!d->drawing)
-        d->drawing = QSharedPointer<Drawing>(new Drawing(d->workbook));
+        d->drawing = QSharedPointer<Drawing>(new Drawing(this));
 
     DrawingOneCellAnchor *anchor = new DrawingOneCellAnchor(d->drawing.data(), DrawingAnchor::Picture);
 
@@ -1067,10 +1062,10 @@ bool Worksheet::insertChart(int row, int column, AbstractChart *chart, const QSi
     anchor->from = XlsxMarker(row, column, 0, 0);
     anchor->ext = size * 9525;
 
-    QSharedPointer<ChartFile> chartFile = QSharedPointer<ChartFile>(new ChartFile);
-    chartFile->setChart(chart);
-    anchor->setObjectGraphicFrame(chartFile);
-    return true;
+    QSharedPointer<Chart> chart = QSharedPointer<Chart>(new Chart(this));
+    anchor->setObjectGraphicFrame(chart);
+
+    return chart.data();
 }
 
 /*!
@@ -2117,7 +2112,7 @@ bool Worksheet::loadFromXmlFile(QIODevice *device)
                 QString rId = reader.attributes().value(QStringLiteral("r:id")).toString();
                 QString name = d->relationships.getRelationshipById(rId).target;
                 QString path = QDir::cleanPath(splitPath(filePath())[0] + QLatin1String("/") + name);
-                d->drawing = QSharedPointer<Drawing>(new Drawing(d->workbook));
+                d->drawing = QSharedPointer<Drawing>(new Drawing(this));
                 d->drawing->setFilePath(path);
             }
         }
diff --git a/src/xlsx/xlsxworksheet.h b/src/xlsx/xlsxworksheet.h
index c5a9f86..c689a5d 100755
--- a/src/xlsx/xlsxworksheet.h
+++ b/src/xlsx/xlsxworksheet.h
@@ -50,7 +50,7 @@ class ConditionalFormatting;
 class CellRange;
 class RichString;
 class Relationships;
-class AbstractChart;
+class Chart;
 
 class WorksheetPrivate;
 class Q_XLSX_EXPORT Worksheet : public OOXmlFile
@@ -93,7 +93,7 @@ public:
 
     bool insertImage(int row, int column, const QImage &image);
     Q_DECL_DEPRECATED int insertImage(int row, int column, const QImage &image, const QPointF &offset, double xScale=1, double yScale=1);
-    bool insertChart(int row, int column, AbstractChart *chart, const QSize &size);
+    Chart *insertChart(int row, int column, const QSize &size);
 
     int mergeCells(const QString &range, const Format &format=Format());
     int mergeCells(const CellRange &range, const Format &format=Format());