HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Commit - r2056:4b7228265b30

Implement QChartView::setChart()

Jani Honkonen -

r2056:4b7228265b30

parent child

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r2056:4b7228265b30

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src/chartlayout.cpp +2 -1

             /****************************************************************************
             **
             ** Copyright (C) 2012 Digia Plc
             ** All rights reserved.
             ** For any questions to Digia, please use contact form at http://qt.digia.com
             **
             ** This file is part of the Qt Commercial Charts Add-on.
             **
             ** $QT_BEGIN_LICENSE$
             ** Licensees holding valid Qt Commercial licenses may use this file in
             ** accordance with the Qt Commercial License Agreement provided with the
             ** Software or, alternatively, in accordance with the terms contained in
             ** a written agreement between you and Digia.
             **
             ** If you have questions regarding the use of this file, please use
             ** contact form at http://qt.digia.com
             ** $QT_END_LICENSE$
             **
             ****************************************************************************/
             #include "chartlayout_p.h"
             #include "chartpresenter_p.h"
             #include "qlegend_p.h"
             #include "chartaxis_p.h"
             #include "charttitle_p.h"
             #include "chartbackground_p.h"
             #include "legendmarker_p.h"
             #include <QDebug>
             QTCOMMERCIALCHART_BEGIN_NAMESPACE
             static const qreal golden_ratio = 0.25;
             ChartLayout::ChartLayout(ChartPresenter* presenter):
             m_presenter(presenter),
             m_margins(20,20,20,20),
             m_minChartRect(0,0,200,200)
             {
             }
             ChartLayout::~ChartLayout()
             {
             }
             void ChartLayout::setGeometry(const QRectF& rect)
             {
-                Q_ASSERT(rect.isValid());
+                if (!rect.isValid())
+                    return;
                 QList<ChartAxis*> axes = m_presenter->axisItems();
                 ChartTitle* title = m_presenter->titleElement();
                 QLegend* legend = m_presenter->legend();
                 ChartBackground* background = m_presenter->backgroundElement();
                 QRectF contentGeometry = calculateBackgroundGeometry(rect,background);
                 contentGeometry = calculateContentGeometry(contentGeometry);
                 if (title && title->isVisible()) {
                     contentGeometry = calculateTitleGeometry(contentGeometry,title);
                 }
                 if (legend->isAttachedToChart() && legend->isVisible()) {
                     contentGeometry = calculateLegendGeometry(contentGeometry,legend);
                 }
                 calculateChartGeometry(contentGeometry,axes);
                 //TODO remove me
             #ifdef SHOW_LAYOUT
                 LayoutDebuger* debuger = LayoutDebuger::instance();
                 debuger->reset();
                 debuger->setPen(QPen(Qt::red));
                 debuger->add(backgroundGeometry,m_presenter->rootItem());
                 debuger->add(titleGeometry,m_presenter->rootItem());
                 debuger->add(legendGeometry ,m_presenter->rootItem());
                 debuger->add(axisGeometry ,m_presenter->rootItem());
                 debuger->add(geometry,m_presenter->rootItem());
                 foreach(LegendMarker* marker,legend->d_ptr->markers()){
                     debuger->add(marker->mapRectToScene(marker->boundingRect()),m_presenter->rootItem());
                 }
             #endif
                 QGraphicsLayout::setGeometry(rect);
             }
             QRectF ChartLayout::calculateContentGeometry(const QRectF& geometry) const
             {
             	return geometry.adjusted(m_margins.left(),m_margins.top(),-m_margins.right(),-m_margins.bottom());
             }
             QRectF ChartLayout::calculateContentMinimum(const QRectF& minimum) const
             {
                 return  minimum.adjusted(0,0,m_margins.left()+m_margins.right(),m_margins.top() + m_margins.bottom());
             }
             QRectF ChartLayout::calculateBackgroundGeometry(const QRectF& geometry,ChartBackground* background) const
             {
                 qreal left, top, right, bottom;
                 getContentsMargins(&left, &top, &right, &bottom);
                 QRectF backgroundGeometry = geometry.adjusted(left,top,-right,-bottom);
                 if(background) background->setRect(backgroundGeometry);
                 return backgroundGeometry;
             }
             QRectF ChartLayout::calculateBackgroundMinimum(const QRectF& minimum) const
             {
                 qreal left, top, right, bottom;
                 getContentsMargins(&left, &top, &right, &bottom);
                 return minimum.adjusted(0,0,left + right,top+bottom);
             }
             QRectF ChartLayout::calculateChartGeometry(const QRectF& geometry, const QList<ChartAxis*>& axes) const
             {
                 QSizeF vertical(0,0);
                 QSizeF horizontal(0,0);
                 // check axis size
                 foreach(ChartAxis* axis , axes) {
                     if(axis->orientation()==Qt::Vertical && axis->isVisible()) {
                         vertical = vertical.expandedTo(axis->effectiveSizeHint(Qt::MinimumSize));
                     }
                     else if(axis->orientation()==Qt::Horizontal && axis->isVisible()) {
                         horizontal = horizontal.expandedTo(axis->effectiveSizeHint(Qt::MinimumSize));
                     }
                 }
                 qreal width = qMin(vertical.width(),geometry.width() * golden_ratio);
                 QRectF rect = geometry.adjusted(width,vertical.height()/2,-horizontal.width()/2,-horizontal.height());
                 m_presenter->setChartsGeometry(rect);
                 foreach(ChartAxis* axis , axes) {
                     axis->setGeometry(geometry);
                 }
                 return rect;
             }
             QRectF ChartLayout::calculateAxisMinimum(const QRectF& minimum, const QList<ChartAxis*>& axes) const
             {
                 QSizeF vertical(0,0);
                 QSizeF horizontal(0,0);
                 // check axis size
                 foreach(ChartAxis* axis , axes) {
                     if(axis->orientation()==Qt::Vertical && axis->isVisible()){
                         vertical = vertical.expandedTo(axis->effectiveSizeHint(Qt::MinimumSize));
                     }else if(axis->orientation()==Qt::Horizontal && axis->isVisible()) {
                         horizontal = horizontal.expandedTo(axis->effectiveSizeHint(Qt::MinimumSize));
                     }
                 }
                 return  minimum.adjusted(0,0,horizontal.width()+vertical.width(),horizontal.height() + vertical.height());
             }
             QRectF ChartLayout::calculateLegendGeometry(const QRectF& geometry,QLegend* legend) const
             {
                 QSizeF size = legend->effectiveSizeHint(Qt::PreferredSize,QSizeF(-1,-1));
                 QRectF legendRect;
                 QRectF result;
                 switch (legend->alignment()) {
                     case Qt::AlignTop: {
                         legendRect = QRectF(geometry.topLeft(),QSizeF(geometry.width(),size.height()));
                         result = geometry.adjusted(0,legendRect.height(),0,0);
                         break;
                     }
                     case Qt::AlignBottom: {
                         legendRect = QRectF(QPointF(geometry.left(),geometry.bottom()-size.height()),QSizeF(geometry.width(),size.height()));
                         result = geometry.adjusted(0,0,0,-legendRect.height());
                         break;
                     }
                     case Qt::AlignLeft: {
                         qreal width = qMin(size.width(),geometry.width()*golden_ratio);
                         legendRect = QRectF(geometry.topLeft(),QSizeF(width,geometry.height()));
                         result = geometry.adjusted(width,0,0,0);
                         break;
                     }
                     case Qt::AlignRight: {
                         qreal width = qMin(size.width(),geometry.width()*golden_ratio);
                         legendRect = QRectF(QPointF(geometry.right()-width,geometry.top()),QSizeF(width,geometry.height()));
                         result = geometry.adjusted(0,0,-width,0);
                         break;
                     }
                     default: {
                         break;
                     }
                 }
                 legend->setGeometry(legendRect);
                 return result;
             }
             QRectF ChartLayout::calculateLegendMinimum(const QRectF& geometry,QLegend* legend) const
             {
                     QSizeF minSize = legend->effectiveSizeHint(Qt::MinimumSize,QSizeF(-1,-1));
                     return geometry.adjusted(0,0,minSize.width(),minSize.height());
             }
             QRectF ChartLayout::calculateTitleGeometry(const QRectF& geometry,ChartTitle* title) const
             {
                     title->setGeometry(geometry);
                     QPointF center = geometry.center() - title->boundingRect().center();
                     title->setPos(center.x(),title->pos().y());
                     return geometry.adjusted(0,title->boundingRect().height(),0,0);
             }
             QRectF ChartLayout::calculateTitleMinimum(const QRectF& minimum,ChartTitle* title) const
             {
                     QSizeF min = title->sizeHint(Qt::MinimumSize);
                     return  minimum.adjusted(0,0,min.width(),min.height());
             }
             QSizeF ChartLayout::sizeHint ( Qt::SizeHint which, const QSizeF & constraint) const
             {
                 Q_UNUSED(constraint);
                 if(which == Qt::MinimumSize){
                     QList<ChartAxis*> axes = m_presenter->axisItems();
                     ChartTitle* title = m_presenter->titleElement();
                     QLegend* legend = m_presenter->legend();
                     QRectF minimumRect(0,0,0,0);
                     minimumRect = calculateBackgroundMinimum(minimumRect);
                     minimumRect = calculateContentMinimum(minimumRect);
                     minimumRect = calculateTitleMinimum(minimumRect,title);
                     minimumRect = calculateLegendMinimum(minimumRect,legend);
                     minimumRect = calculateAxisMinimum(minimumRect,axes);
                     return  minimumRect.united(m_minChartRect).size().toSize();
                 }else
                     return QSize(-1,-1);
             }
             void ChartLayout::setMargins(const QMargins& margins)
             {
                 if(m_margins != margins){
                     m_margins = margins;
                     updateGeometry();
                 }
             }
             QMargins ChartLayout::margins() const
             {
                 return m_margins;
             }
             void ChartLayout::adjustChartGeometry()
             {
                 setGeometry(geometry());
             }
             QTCOMMERCIALCHART_END_NAMESPACE

src/qchartview.cpp +36 -3

             /****************************************************************************
             **
             ** Copyright (C) 2012 Digia Plc
             ** All rights reserved.
             ** For any questions to Digia, please use contact form at http://qt.digia.com
             **
             ** This file is part of the Qt Commercial Charts Add-on.
             **
             ** $QT_BEGIN_LICENSE$
             ** Licensees holding valid Qt Commercial licenses may use this file in
             ** accordance with the Qt Commercial License Agreement provided with the
             ** Software or, alternatively, in accordance with the terms contained in
             ** a written agreement between you and Digia.
             **
             ** If you have questions regarding the use of this file, please use
             ** contact form at http://qt.digia.com
             ** $QT_END_LICENSE$
             **
             ****************************************************************************/
             #include "qchartview.h"
             #include "qchartview_p.h"
             #include "qchart_p.h"
             #include <QGraphicsScene>
             #include <QRubberBand>
             /*!
                 \enum QChartView::RubberBand
                 This enum describes the different types of rubber bands that can be used for zoom rect selection
                 \value NoRubberBand
                 \value VerticalRubberBand
                 \value HorizonalRubberBand
                 \value RectangleRubberBand
             */
             /*!
                 \class QChartView
                 \brief Standalone charting widget.
                 QChartView is a standalone widget that can display charts. It does not require separate
                 QGraphicsScene to work. It manages the graphical representation of different types of
                 series and other chart related objects like QAxis and QLegend. If you want to
                 display a chart in your existing QGraphicsScene, you can use the QChart class instead.
                 \sa QChart
             */
             QTCOMMERCIALCHART_BEGIN_NAMESPACE
             /*!
                 Constructs a chartView object with parent \a parent.
             */
             QChartView::QChartView(QWidget *parent) :
                 QGraphicsView(parent),
                 d_ptr(new QChartViewPrivate(this))
             {
             }
             /*!
                 Constructs a chartView object with parent \a parent to display a \a chart.
             */
             QChartView::QChartView(QChart *chart,QWidget *parent) :
                 QGraphicsView(parent),
                 d_ptr(new QChartViewPrivate(this,chart))
             {
             }
             /*!
                 Destroys the object and it's children, like series and axis objects added to it.
             */
             QChartView::~QChartView()
             {
             }
             /*!
                 Returns the pointer to the associated chart
             */
             QChart* QChartView::chart() const
             {
                 return d_ptr->m_chart;
             }
             /*!
+                Sets the current chart to \a chart. Ownership of the new chart is passed to chartview
+                and ownership of the previous chart is released.
+                To avoid memory leaks users needs to make sure the previous chart is deleted.
+            */
+            void QChartView::setChart(QChart *chart)
+            {
+                d_ptr->setChart(chart);
+            }
+            /*!
                 Sets the RubberBandPlicy to \a rubberBand. Selected policy determines the way zooming is performed.
             */
             void QChartView::setRubberBand(const RubberBands& rubberBand)
             {
                 d_ptr->m_rubberBandFlags=rubberBand;
                 if (!d_ptr->m_rubberBandFlags) {
                     delete d_ptr->m_rubberBand;
                     d_ptr->m_rubberBand=0;
                     return;
                 }
                 if (!d_ptr->m_rubberBand) {
                     d_ptr->m_rubberBand = new QRubberBand(QRubberBand::Rectangle, this);
                     d_ptr->m_rubberBand->setEnabled(true);
                 }
             }
             /*!
                 Returns the RubberBandPolicy that is currently being used by the widget.
             */
             QChartView::RubberBands QChartView::rubberBand() const
             {
                 return d_ptr->m_rubberBandFlags;
             }
             /*!
                 If Left mouse button is pressed and the RubberBandPolicy is enabled the \a event is accepted and the rubber band is displayed on the screen allowing the user to select the zoom area.
                 If different mouse button is pressed and/or the RubberBandPolicy is disabled then the \a event is passed to QGraphicsView::mousePressEvent() implementation.
             */
             void QChartView::mousePressEvent(QMouseEvent *event)
             {
                 if(d_ptr->m_rubberBand && d_ptr->m_rubberBand->isEnabled() && event->button() == Qt::LeftButton) {
                     QRectF plotArea = d_ptr->m_chart->plotArea();
                     if (plotArea.contains(event->pos())) {
                         d_ptr->m_rubberBandOrigin = event->pos();
                         d_ptr->m_rubberBand->setGeometry(QRect(d_ptr->m_rubberBandOrigin, QSize()));
                         d_ptr->m_rubberBand->show();
                         event->accept();
                     }
                 }
                 else {
                     QGraphicsView::mousePressEvent(event);
                 }
             }
             /*!
                 If RubberBand rectange specification has been initiated in pressEvent then \a event data is used to update RubberBand geometry.
                 In other case the defualt QGraphicsView::mouseMoveEvent implementation is called.
             */
             void QChartView::mouseMoveEvent(QMouseEvent *event)
             {
                 if(d_ptr->m_rubberBand && d_ptr->m_rubberBand->isVisible()) {
                     QRect rect = d_ptr->m_chart->plotArea().toRect();
                     int width = event->pos().x() - d_ptr->m_rubberBandOrigin.x();
                     int height = event->pos().y() - d_ptr->m_rubberBandOrigin.y();
                     if (!d_ptr->m_rubberBandFlags.testFlag(VerticalRubberBand)) {
                         d_ptr->m_rubberBandOrigin.setY(rect.top());
                         height = rect.height();
                     }
                     if (!d_ptr->m_rubberBandFlags.testFlag(HorizonalRubberBand)) {
                         d_ptr->m_rubberBandOrigin.setX(rect.left());
                         width= rect.width();
                     }
                     d_ptr->m_rubberBand->setGeometry(QRect(d_ptr->m_rubberBandOrigin.x(),d_ptr->m_rubberBandOrigin.y(), width,height).normalized());
                 }
                 else {
                     QGraphicsView::mouseMoveEvent(event);
                 }
             }
             /*!
                 If left mouse button is release and RubberBand is enabled then \a event is accepted and the view is zoomed in to rect specified by RubberBand
                 If it is the right mouse button \a event then RubberBand is dissmissed and zoom is canceled.
             */
             void QChartView::mouseReleaseEvent(QMouseEvent *event)
             {
                 if(d_ptr->m_rubberBand) {
                     if (event->button() == Qt::LeftButton && d_ptr->m_rubberBand->isVisible()) {
                         d_ptr->m_rubberBand->hide();
                         QRect rect = d_ptr->m_rubberBand->geometry();
                         d_ptr->m_chart->zoomIn(rect);
                         event->accept();
                     }
                     if(event->button()==Qt::RightButton){
                         d_ptr->m_chart->zoomOut();
                         event->accept();
                     }
                 }
                 else {
                     QGraphicsView::mouseReleaseEvent(event);
                 }
             }
             /*!
                 Resizes and updates the chart area using the \a event data
             */
             void QChartView::resizeEvent(QResizeEvent *event)
             {
                 QGraphicsView::resizeEvent(event);
-                d_ptr->m_chart->resize(size());
+                d_ptr->resize();
-                setMinimumSize(d_ptr->m_chart->minimumSize().toSize());
-                setSceneRect(d_ptr->m_chart->geometry());
             }
             ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
             QChartViewPrivate::QChartViewPrivate(QChartView *q,QChart* chart):
             q_ptr(q),
             m_scene(new QGraphicsScene(q)),
             m_chart(chart),
             m_presenter(0),
             m_rubberBand(0),
             m_rubberBandFlags(QChartView::NoRubberBand)
             {
                 q_ptr->setFrameShape(QFrame::NoFrame);
                 q_ptr->setBackgroundRole(QPalette::Window);
                 q_ptr->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
                 q_ptr->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
                 q_ptr->setScene(m_scene);
                 q_ptr->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
                 if(!m_chart) m_chart = new QChart();
                 m_scene->addItem(m_chart);
             }
             QChartViewPrivate::~QChartViewPrivate()
             {
             }
+            void QChartViewPrivate::setChart(QChart *chart)
+            {
+                Q_ASSERT(chart);
+                if (m_chart == chart)
+                    return;
+                if (m_chart)
+                    m_scene->removeItem(m_chart);
+                m_chart = chart;
+                m_scene->addItem(m_chart);
+                resize();
+            }
+            void QChartViewPrivate::resize()
+            {
+                m_chart->resize(q_ptr->size());
+                q_ptr->setMinimumSize(m_chart->minimumSize().toSize());
+                q_ptr->setSceneRect(m_chart->geometry());
+            }
             #include "moc_qchartview.cpp"
             QTCOMMERCIALCHART_END_NAMESPACE

src/qchartview.h +2 0

             /****************************************************************************
             **
             ** Copyright (C) 2012 Digia Plc
             ** All rights reserved.
             ** For any questions to Digia, please use contact form at http://qt.digia.com
             **
             ** This file is part of the Qt Commercial Charts Add-on.
             **
             ** $QT_BEGIN_LICENSE$
             ** Licensees holding valid Qt Commercial licenses may use this file in
             ** accordance with the Qt Commercial License Agreement provided with the
             ** Software or, alternatively, in accordance with the terms contained in
             ** a written agreement between you and Digia.
             **
             ** If you have questions regarding the use of this file, please use
             ** contact form at http://qt.digia.com
             ** $QT_END_LICENSE$
             **
             ****************************************************************************/
             #ifndef QCHARTVIEW_H
             #define QCHARTVIEW_H
             #include <QAbstractAxis>
             #include <QAbstractSeries>
             #include <QChart>
             #include <QGraphicsView>
             class QGraphicsScene;
             class QRubberBand;
             QTCOMMERCIALCHART_BEGIN_NAMESPACE
             class QChartViewPrivate;
             class QTCOMMERCIALCHART_EXPORT QChartView : public QGraphicsView
             {
                 Q_OBJECT
                 Q_ENUMS(RubberBand)
             public:
                 enum  RubberBand{
                     NoRubberBand = 0x0,
                     VerticalRubberBand = 0x1,
                     HorizonalRubberBand = 0x2,
                     RectangleRubberBand = 0x3
                 };
                 Q_DECLARE_FLAGS(RubberBands, RubberBand)
                 explicit QChartView(QWidget *parent = 0);
                 explicit QChartView(QChart *chart,QWidget *parent = 0);
                 ~QChartView();
                 void setRubberBand(const RubberBands& rubberBands);
                 RubberBands rubberBand() const;
                 QChart* chart() const;
+                void setChart(QChart *chart);
             protected:
                 void resizeEvent(QResizeEvent *event);
                 void mousePressEvent(QMouseEvent *event);
                 void mouseMoveEvent(QMouseEvent *event);
                 void mouseReleaseEvent(QMouseEvent *event);
             protected:
                 QScopedPointer<QChartViewPrivate> d_ptr;
                 Q_DISABLE_COPY(QChartView)
             };
             QTCOMMERCIALCHART_END_NAMESPACE
             #endif // QCHARTVIEW_H

src/qchartview_p.h +2 0

             /****************************************************************************
             **
             ** Copyright (C) 2012 Digia Plc
             ** All rights reserved.
             ** For any questions to Digia, please use contact form at http://qt.digia.com
             **
             ** This file is part of the Qt Commercial Charts Add-on.
             **
             ** $QT_BEGIN_LICENSE$
             ** Licensees holding valid Qt Commercial licenses may use this file in
             ** accordance with the Qt Commercial License Agreement provided with the
             ** Software or, alternatively, in accordance with the terms contained in
             ** a written agreement between you and Digia.
             **
             ** If you have questions regarding the use of this file, please use
             ** contact form at http://qt.digia.com
             ** $QT_END_LICENSE$
             **
             ****************************************************************************/
             //  W A R N I N G
             //  -------------
             //
             // This file is not part of the QtCommercial Chart API.  It exists purely as an
             // implementation detail.  This header file may change from version to
             // version without notice, or even be removed.
             //
             // We mean it.
             #ifndef QCHARTVIEW_P_H
             #define QCHARTVIEW_P_H
             #include "qchartview.h"
             class QGraphicsScene;
             class ChartPresenter;
             QTCOMMERCIALCHART_BEGIN_NAMESPACE
             class QChart;
             class QChartView;
             class QChartViewPrivate {
             public:
                 explicit QChartViewPrivate(QChartView *q, QChart *chart = 0);
                 ~QChartViewPrivate();
+                void setChart(QChart *chart);
+                void resize();
             protected:
                 QChartView *q_ptr;
             public:
                 QGraphicsScene *m_scene;
                 QChart *m_chart;
                 ChartPresenter *m_presenter;
                 QPoint m_rubberBandOrigin;
                 QRubberBand *m_rubberBand;
                 QChartView::RubberBands m_rubberBandFlags;
             };
             QTCOMMERCIALCHART_END_NAMESPACE
             #endif

tests/auto/qchartview/tst_qchartview.cpp +35 0

             /****************************************************************************
             **
             ** Copyright (C) 2012 Digia Plc
             ** All rights reserved.
             ** For any questions to Digia, please use contact form at http://qt.digia.com
             **
             ** This file is part of the Qt Commercial Charts Add-on.
             **
             ** $QT_BEGIN_LICENSE$
             ** Licensees holding valid Qt Commercial licenses may use this file in
             ** accordance with the Qt Commercial License Agreement provided with the
             ** Software or, alternatively, in accordance with the terms contained in
             ** a written agreement between you and Digia.
             **
             ** If you have questions regarding the use of this file, please use
             ** contact form at http://qt.digia.com
             ** $QT_END_LICENSE$
             **
             ****************************************************************************/
             #include <QtTest/QtTest>
             #include <qchartview.h>
             #include <qlineseries.h>
             #include <cmath>
             #include <tst_definitions.h>
             #include <qvalueaxis.h>
             QTCOMMERCIALCHART_USE_NAMESPACE
             Q_DECLARE_METATYPE(QChart*)
             Q_DECLARE_METATYPE(QChartView::RubberBands)
             Q_DECLARE_METATYPE(Qt::Key)
             class tst_QChartView : public QObject
             {
                 Q_OBJECT
             public Q_SLOTS:
                 void initTestCase();
                 void cleanupTestCase();
                 void init();
                 void cleanup();
             private Q_SLOTS:
                 void qchartview_data();
                 void qchartview();
                 void chart_data();
                 void chart();
                 void rubberBand_data();
                 void rubberBand();
+                void setChart();
             private:
                 QChartView* m_view;
             };
             void tst_QChartView::initTestCase()
             {
                 //test tracks mouse, give a while to user to relese it
                 QTest::qWait(1000);
             }
             void tst_QChartView::cleanupTestCase()
             {
             }
             void tst_QChartView::init()
             {
                 m_view = new QChartView(new QChart());
                 m_view->chart()->legend()->setVisible(false);
             }
             void tst_QChartView::cleanup()
             {
                 delete m_view;
                 m_view =0;
             }
             void tst_QChartView::qchartview_data()
             {
             }
             void tst_QChartView::qchartview()
             {
                 QVERIFY(m_view->chart());
                 QCOMPARE(m_view->rubberBand(), QChartView::NoRubberBand);
                 m_view->show();
                 QTest::qWaitForWindowShown(m_view);
                 delete(new QChartView());
                 QChartView view;
                 QVERIFY(view.chart());
             }
             void tst_QChartView::chart_data()
             {
                 QTest::addColumn<QChart*>("chart");
                 QTest::newRow("qchart") << new QChart();
             }
             void tst_QChartView::chart()
             {
                 QFETCH(QChart*, chart);
                 QChartView* view = new QChartView(chart);
                 QCOMPARE(view->chart(), chart);
                 delete view;
             }
             void tst_QChartView::rubberBand_data()
             {
                 QTest::addColumn<QChartView::RubberBands>("rubberBand");
                 QTest::addColumn<int>("Xcount");
                 QTest::addColumn<int>("Ycount");
                 QTest::addColumn<QPoint>("min");
                 QTest::addColumn<QPoint>("max");
                 QTest::newRow("HorizonalRubberBand") << QChartView::RubberBands(QChartView::HorizonalRubberBand) << 0 << 1 << QPoint(5,5) << QPoint(5,5);
                 QTest::newRow("VerticalRubberBand") <<  QChartView::RubberBands(QChartView::VerticalRubberBand) << 1 << 0 << QPoint(5,5) << QPoint(5,5);
                 QTest::newRow("RectangleRubberBand") <<  QChartView::RubberBands(QChartView::RectangleRubberBand) << 1 << 1 << QPoint(5,5) << QPoint(5,5);
             }
             void tst_QChartView::rubberBand()
             {
                 QFETCH(QChartView::RubberBands, rubberBand);
                 QFETCH(int, Xcount);
                 QFETCH(int, Ycount);
                 QFETCH(QPoint, min);
                 QFETCH(QPoint, max);
                 m_view->setRubberBand(rubberBand);
                 QCOMPARE(m_view->rubberBand(), rubberBand);
                 QLineSeries* line = new QLineSeries();
                 *line << QPointF(0, 0) << QPointF(200, 200);
                 m_view->chart()->addSeries(line);
                 m_view->chart()->createDefaultAxes();
                 m_view->show();
                 QRectF plotArea = m_view->chart()->plotArea();
                 //this is hack since view does not get events otherwise
                 m_view->setMouseTracking(true);
                 QAbstractAxis* axisY = m_view->chart()->axisY();
                 QSignalSpy spy0(axisY, SIGNAL(rangeChanged(qreal,qreal)));
                 QAbstractAxis* axisX = m_view->chart()->axisX();
                 QSignalSpy spy1(axisX, SIGNAL(rangeChanged(qreal,qreal)));
                 QValueAxis* vaxisX = qobject_cast<QValueAxis*>(axisX);
                 QValueAxis* vaxisY = qobject_cast<QValueAxis*>(axisY);
                 int minX = vaxisX->min();
                 int minY = vaxisY->min();
                 int maxX = vaxisX->max();
                 int maxY = vaxisY->max();
                 QTest::qWaitForWindowShown(m_view);
                 QTest::mouseMove(m_view->viewport(),  min + plotArea.topLeft().toPoint());
                 QTest::qWait(2000);
                 QTest::mousePress(m_view->viewport(), Qt::LeftButton, 0,  min + plotArea.topLeft().toPoint());
                 QTest::qWait(2000);
                 QTest::mouseMove(m_view->viewport(),  plotArea.bottomRight().toPoint() - max);
                 QTest::qWait(2000);
                 QTest::mouseRelease(m_view->viewport(), Qt::LeftButton, 0, plotArea.bottomRight().toPoint() - max);
                 TRY_COMPARE(spy0.count(), Xcount);
                 TRY_COMPARE(spy1.count(), Ycount);
                 //this is hack since view does not get events otherwise
                 m_view->setMouseTracking(false);
                 QVERIFY(vaxisX->min() >= minX );
                 QVERIFY(vaxisX->max() <= maxX );
                 QVERIFY(vaxisY->min() >= minY );
                 QVERIFY(vaxisY->max() <= maxY );
             }
+            void tst_QChartView::setChart()
+            {
+                QPointer<QChart> oldChart = m_view->chart();
+                QLineSeries *series1 = new QLineSeries();
+                series1->append(0,0);
+                series1->append(1,1);
+                oldChart->addSeries(series1);
+                QPointer<QChart> newChart = new QChart();
+                QLineSeries *series2 = new QLineSeries();
+                series2->append(0,1);
+                series2->append(1,0);
+                newChart->addSeries(series2);
+                // show current chart
+                m_view->show();
+                QTest::qWaitForWindowShown(m_view);
+                QTest::qWait(1000);
+                // set new chart
+                m_view->setChart(newChart);
+                QVERIFY(m_view->chart() == newChart);
+                QVERIFY(!oldChart.isNull()); // ownership of the oldChart is released and not deleted
+                QTest::qWait(1000);
+                // delete the view
+                delete m_view;
+                m_view = 0;
+                QVERIFY(newChart.isNull()); // view owns and deletes it
+                QVERIFY(!oldChart.isNull()); // not owned by view
+                delete oldChart;
+            }
             QTEST_MAIN(tst_QChartView)
             #include "tst_qchartview.moc"

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