Add very basic chart support

examples/xlsx/chart/chart.pro

@@ -0,0 +1,9 @@
+TARGET = chart
+
+#include(../../../src/xlsx/qtxlsx.pri)
+QT+=xlsx
+
+CONFIG   += console
+CONFIG   -= app_bundle
+
+SOURCES += main.cpp

examples/xlsx/chart/main.cpp

@@ -0,0 +1,31 @@
+#include <QtCore>
+#include "xlsxdocument.h"
+#include "xlsxpiechart.h"
+#include "xlsxworksheet.h"
+
+using namespace QXlsx;
+
+int main()
+{
+    //![0]
+    Document xlsx;
+
+    Worksheet *sheet = xlsx.currentWorksheet();
+    for (int i=1; i<10; ++i)
+        sheet->write(i, 1, i*i);
+    //![0]
+
+    //![1]
+    PieChart *chart = new PieChart;
+    chart->addSeries(CellRange("A1:A9"), sheet->sheetName());
+    sheet->insertChart(3, 3, chart, QSize(300, 300));
+    //![1]
+
+    //![2]
+    xlsx.saveAs("Book1.xlsx");
+    //![2]
+
+    Document xlsx2("Book1.xlsx");
+    xlsx2.saveAs("Book2.xlsx");
+    return 0;
+}

examples/xlsx/xlsx.pro

@@ -14,6 +14,7 @@ SUBDIRS = hello \
     conditionalformatting \
     worksheetoperations \
     hyperlinks \
+    chart \
     demo
 
 qtHaveModule(widgets): SUBDIRS += xlsxwidget

src/xlsx/qtxlsx.pri

@@ -39,7 +39,11 @@ HEADERS += $$PWD/xlsxdocpropscore_p.h \
     $$PWD/xlsxmediafile_p.h \
     $$PWD/xlsxooxmlfile.h \
     $$PWD/xlsxooxmlfile_p.h \
-    $$PWD/xlsxchartfile_p.h
+    $$PWD/xlsxchartfile_p.h \
+    $$PWD/xlsxabstractchart.h \
+    $$PWD/xlsxabstractchart_p.h \
+    $$PWD/xlsxpiechart.h \
+    $$PWD/xlsxpiechart_p.h
 
 SOURCES += $$PWD/xlsxdocpropscore.cpp \
     $$PWD/xlsxdocpropsapp.cpp \
@@ -66,4 +70,6 @@ SOURCES += $$PWD/xlsxdocpropscore.cpp \
     $$PWD/xlsxdrawinganchor.cpp \
     $$PWD/xlsxmediafile.cpp \
     $$PWD/xlsxooxmlfile.cpp \
-    $$PWD/xlsxchartfile.cpp
+    $$PWD/xlsxchartfile.cpp \
+    $$PWD/xlsxabstractchart.cpp \
+    $$PWD/xlsxpiechart.cpp

src/xlsx/xlsxabstractchart.cpp

@@ -0,0 +1,86 @@
+/****************************************************************************
+** 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"
+
+QT_BEGIN_NAMESPACE_XLSX
+
+AbstractChartPrivate::AbstractChartPrivate(AbstractChart *chart)
+    :q_ptr(chart)
+{
+
+}
+
+AbstractChartPrivate::~AbstractChartPrivate()
+{
+
+}
+
+/*!
+ * \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));
+}
+
+QT_END_NAMESPACE_XLSX

src/xlsx/xlsxabstractchart.h

@@ -0,0 +1,63 @@
+/****************************************************************************
+** 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 loadFromXml(QXmlStreamReader &reader) = 0;
+    virtual void saveToXml(QXmlStreamWriter &writer) const = 0;
+
+    AbstractChartPrivate * d_ptr;
+};
+
+QT_END_NAMESPACE_XLSX
+
+#endif // QXLSX_XLSXABSTRACTCHART_H

src/xlsx/xlsxabstractchart_p.h

@@ -0,0 +1,66 @@
+/****************************************************************************
+** 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 XLSXABSTRACTCHART_P_H
+#define XLSXABSTRACTCHART_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 "xlsxabstractchart.h"
+#include <QList>
+#include <QSharedPointer>
+
+QT_BEGIN_NAMESPACE_XLSX
+
+class XlsxSeries
+{
+public:
+
+    QString numRef;
+};
+
+class AbstractChartPrivate
+{
+    Q_DECLARE_PUBLIC(AbstractChart)
+public:
+    AbstractChartPrivate(AbstractChart *chart);
+    virtual ~AbstractChartPrivate();
+
+    QList<QSharedPointer<XlsxSeries> > seriesList;
+    ChartFile *cf;
+    AbstractChart *q_ptr;
+};
+
+QT_END_NAMESPACE_XLSX
+#endif // XLSXABSTRACTCHART_P_H

src/xlsx/xlsxchartfile.cpp

@@ -24,7 +24,9 @@
 ****************************************************************************/
 
 #include "xlsxchartfile_p.h"
-
+#include "xlsxabstractchart.h"
+#include "xlsxabstractchart_p.h"
+#include "xlsxpiechart.h"
 #include <QIODevice>
 #include <QXmlStreamReader>
 #include <QXmlStreamWriter>
@@ -35,15 +37,112 @@ 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")) {
+                loadXmlChart(reader);
+            }
+        }
+    }
+    return true;
+}
 
-    return false;
+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")) {
+                loadXmlPlotArea(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) {
+            AbstractChart *chart = 0;
+            if (reader.name() == QLatin1String("layout")) {
+                //...
+            } else if (reader.name() == QLatin1String("pieChart")) {
+                chart = new PieChart;
+                chart->loadFromXml(reader);
+            } else if (reader.name() == QLatin1String("")) {
+
+            }
+
+            if (chart) {
+                chart->loadFromXml(reader);
+                setChart(chart);
+            }
+        } 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->saveToXml(writer);
+    writer.writeEndElement(); //plotArea
+
+//    writer.writeStartElement(QStringLiteral("c:legend"));
+//    writer.writeEndElement(); //legend
+
+    writer.writeEndElement(); //chart
+    return true;
 }
 
 } // namespace QXlsx

src/xlsx/xlsxchartfile_p.h

@@ -39,15 +39,38 @@
 
 #include "xlsxooxmlfile.h"
 
+#include <QSharedPointer>
+
+class QXmlStreamReader;
+class QXmlStreamWriter;
+
 namespace QXlsx {
 
+class AbstractChart;
+
 class ChartFile : public OOXmlFile
 {
 public:
     ChartFile();
+    ~ChartFile();
+
+    AbstractChart *chart() const;
+    void setChart(AbstractChart *chart);
 
     void saveToXmlFile(QIODevice *device) const;
     bool loadFromXmlFile(QIODevice *device);
+
+private:
+    bool loadXmlChart(QXmlStreamReader &reader);
+    bool loadXmlPlotArea(QXmlStreamReader &reader);
+    AbstractChart *loadXmlPieChart(QXmlStreamReader &reader);
+
+    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;
 };
 
 } // namespace QXlsx

src/xlsx/xlsxdocument.cpp

@@ -284,6 +284,7 @@ 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];
         zipWriter.addFile(QStringLiteral("xl/charts/chart%1.xml").arg(i+1), cf->saveToXmlData());
     }

src/xlsx/xlsxdrawinganchor.cpp

@@ -91,6 +91,16 @@ void DrawingAnchor::setObjectPicture(const QImage &img)
 
     m_pictureFile = QSharedPointer<MediaFile>(new MediaFile(ba, QStringLiteral("png"), QStringLiteral("image/png")));
     m_drawing->workbook->addMediaFile(m_pictureFile);
+
+    m_objectType = Picture;
+}
+
+void DrawingAnchor::setObjectGraphicFrame(QSharedPointer<ChartFile> chart)
+{
+    m_chartFile = chart;
+    m_drawing->workbook->addChartFile(chart);
+
+    m_objectType = GraphicFrame;
 }
 
 QPoint DrawingAnchor::loadXmlPos(QXmlStreamReader &reader)
@@ -316,13 +326,15 @@ void DrawingAnchor::saveXmlObjectGraphicFrame(QXmlStreamWriter &writer) const
     writer.writeAttribute(QStringLiteral("uri"), QStringLiteral("http://schemas.openxmlformats.org/drawingml/2006/chart"));
 
     int idx = m_drawing->workbook->chartFiles().indexOf(m_chartFile);
-    m_drawing->relationships.addDocumentRelationship(QStringLiteral("/chart"), QStringLiteral("../charts/chart%1.xml").arg(idx));
+    m_drawing->relationships.addDocumentRelationship(QStringLiteral("/chart"), QStringLiteral("../charts/chart%1.xml").arg(idx+1));
 
     writer.writeEmptyElement(QStringLiteral("c:chart"));
     writer.writeAttribute(QStringLiteral("xmlns:c"), QStringLiteral("http://schemas.openxmlformats.org/drawingml/2006/chart"));
     writer.writeAttribute(QStringLiteral("xmlns:r"), QStringLiteral("http://schemas.openxmlformats.org/officeDocument/2006/relationships"));
     writer.writeAttribute(QStringLiteral("r:id"), QStringLiteral("rId%1").arg(m_drawing->relationships.count()));
 
+    writer.writeEndElement(); //a:graphicData
+    writer.writeEndElement(); //a:graphic
     writer.writeEndElement(); //xdr:graphicFrame
 }
 

src/xlsx/xlsxdrawinganchor_p.h

@@ -76,6 +76,7 @@ public:
     DrawingAnchor(Drawing *drawing, ObjectType objectType);
     virtual ~DrawingAnchor();
     void setObjectPicture(const QImage &img);
+    void setObjectGraphicFrame(QSharedPointer<ChartFile> chart);
 
     virtual bool loadFromXml(QXmlStreamReader &reader) = 0;
     virtual void saveToXml(QXmlStreamWriter &writer) const = 0;

src/xlsx/xlsxpiechart.cpp

@@ -0,0 +1,115 @@
+/****************************************************************************
+** 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::loadFromXml(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;
+}
+
+bool PieChartPrivate::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 PieChart::saveToXml(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

src/xlsx/xlsxpiechart.h

@@ -0,0 +1,49 @@
+/****************************************************************************
+** 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 loadFromXml(QXmlStreamReader &reader);
+    void saveToXml(QXmlStreamWriter &writer) const;
+};
+
+QT_END_NAMESPACE_XLSX
+
+#endif // QXLSX_XLSXPIECHART_H

src/xlsx/xlsxpiechart_p.h

@@ -0,0 +1,57 @@
+/****************************************************************************
+** 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);
+
+    bool loadXmlSer(QXmlStreamReader &reader);
+};
+
+QT_END_NAMESPACE_XLSX
+
+#endif // XLSXPIECHART_P_H

src/xlsx/xlsxworksheet.cpp

@@ -37,6 +37,8 @@
 #include "xlsxcellrange.h"
 #include "xlsxconditionalformatting_p.h"
 #include "xlsxdrawinganchor_p.h"
+#include "xlsxabstractchart.h"
+#include "xlsxchartfile_p.h"
 
 #include <QVariant>
 #include <QDateTime>
@@ -1044,6 +1046,33 @@ 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)
+{
+    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));
+
+    DrawingOneCellAnchor *anchor = new DrawingOneCellAnchor(d->drawing.data(), DrawingAnchor::Picture);
+
+    /*
+        The size are expressed as English Metric Units (EMUs). There are
+        12,700 EMUs per point. Therefore, 12,700 * 3 /4 = 9,525 EMUs per
+        pixel
+    */
+    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;
+}
+
 /*!
     Merge a \a range of cells. The first cell should contain the data and the others should
     be blank. All cells will be applied the same style if a valid \a format is given.
@@ -2089,7 +2118,7 @@ bool Worksheet::loadFromXmlFile(QIODevice *device)
                 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->filePath() = path;
+                d->drawing->setFilePath(path);
             }
         }
     }

src/xlsx/xlsxworksheet.h

@@ -48,9 +48,9 @@ class Drawing;
 class DataValidation;
 class ConditionalFormatting;
 class CellRange;
-struct XlsxImageData;
 class RichString;
 class Relationships;
+class AbstractChart;
 
 class WorksheetPrivate;
 class Q_XLSX_EXPORT Worksheet : public OOXmlFile
@@ -93,6 +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);
 
     int mergeCells(const QString &range, const Format &format=Format());
     int mergeCells(const CellRange &range, const Format &format=Format());