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#include <QtGui/QApplication>
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#include <QMainWindow>
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#include <qchartglobal.h>
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#include <qchartview.h>
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#include <qstackedbarseries.h>
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#include <qbarset.h>
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#include <qchartaxis.h>
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#include <qlegend.h>
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#include <QStringList>
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#include <QDebug>
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QTCOMMERCIALCHART_USE_NAMESPACE
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//! [1]
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class DrilldownBarSeries : public QStackedBarSeries
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{
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Q_OBJECT
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public:
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DrilldownBarSeries(QStringList categories, QObject *parent = 0) : QStackedBarSeries(categories,parent) {}
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void mapDrilldownSeries(QString category, DrilldownBarSeries* drilldownSeries)
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{
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mDrilldownSeries[category] = drilldownSeries;
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}
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DrilldownBarSeries* drilldownSeries(QString category)
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{
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return mDrilldownSeries[category];
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}
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public Q_SLOTS:
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private:
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QMap<QString, DrilldownBarSeries*> mDrilldownSeries;
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};
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//! [1]
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//! [2]
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class DrilldownChart : public QChartView
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{
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Q_OBJECT
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public:
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explicit DrilldownChart(QWidget *parent = 0) : QChartView(parent), m_currentSeries(0) {}
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void changeSeries(QSeries* series)
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{
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if (m_currentSeries)
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removeSeries(m_currentSeries);
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m_currentSeries = series;
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addSeries(series);
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setChartTitle(series->title());
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}
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public Q_SLOTS:
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void handleRightClick(QBarSet *barset, QString category)
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{
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// qDebug() << "DrilldownChart::handleRightClick" << barset->name() << category;
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DrilldownBarSeries* series = static_cast<DrilldownBarSeries*> (sender());
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changeSeries(series->drilldownSeries(category));
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}
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private:
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QSeries* m_currentSeries;
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};
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//! [2]
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int main(int argc, char *argv[])
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{
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QApplication a(argc, argv);
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QMainWindow window;
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DrilldownChart* drilldownChart = new DrilldownChart(&window);
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drilldownChart->setChartTheme(QChart::ChartThemeIcy);
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//! [3]
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// Define categories
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QStringList months;
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months << "May" << "Jun" << "Jul" << "Aug" << "Sep";
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QStringList weeks;
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weeks << "week 1" << "week 2" << "week 3" << "week 4";
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QStringList plants;
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plants << "Habanero" << "Lemon Drop" << "Starfish" << "Aji Amarillo";
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//! [3]
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//! [4]
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// Create drilldown structure
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DrilldownBarSeries* seasonSeries = new DrilldownBarSeries(months, drilldownChart);
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seasonSeries->setTitle("Crop by month - Season");
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// Each month in season series has drilldown series for weekly data
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foreach (QString month, months) {
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// Create drilldown series for every week
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DrilldownBarSeries* weeklySeries = new DrilldownBarSeries(weeks, drilldownChart);
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seasonSeries->mapDrilldownSeries(month, weeklySeries);
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// Drilling down from weekly data brings us back to season data.
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foreach (QString week, weeks) {
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weeklySeries->mapDrilldownSeries(week, seasonSeries);
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weeklySeries->setTitle(QString("Crop by week - " + month));
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}
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// Use right click signal to implement drilldown
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QObject::connect(weeklySeries,SIGNAL(rightClicked(QBarSet*,QString)),drilldownChart,SLOT(handleRightClick(QBarSet*,QString)));
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}
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// Enable drilldown from season series using right click.
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QObject::connect(seasonSeries,SIGNAL(rightClicked(QBarSet*,QString)),drilldownChart,SLOT(handleRightClick(QBarSet*,QString)));
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//! [4]
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//! [5]
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// Fill monthly and weekly series with data
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foreach (QString plant, plants) {
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QBarSet* monthlyCrop = new QBarSet(plant);
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foreach (QString month, months) {
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QBarSet* weeklyCrop = new QBarSet(plant);
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foreach (QString week, weeks ) {
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*weeklyCrop << (qrand() % 20);
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}
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// Get the drilldown series from season series and add crop to it.
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seasonSeries->drilldownSeries(month)->addBarSet(weeklyCrop);
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seasonSeries->drilldownSeries(month)->setToolTipEnabled(true);
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*monthlyCrop << weeklyCrop->total();
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QObject::connect(weeklyCrop,SIGNAL(clicked(QString)),weeklyCrop,SIGNAL(toggleFloatingValues()));
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}
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seasonSeries->addBarSet(monthlyCrop);
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QObject::connect(monthlyCrop,SIGNAL(clicked(QString)),monthlyCrop,SIGNAL(toggleFloatingValues()));
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}
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//! [5]
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seasonSeries->setToolTipEnabled(true);
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//! [6]
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// Show season series in initial view
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drilldownChart->changeSeries(seasonSeries);
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drilldownChart->setChartTitle(seasonSeries->title());
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//! [6]
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drilldownChart->axisX()->setGridLineVisible(false);
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QLegend* l = drilldownChart->legend();
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l->handleGeometryChanged(QRectF(50,270,300,20));
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window.setCentralWidget(drilldownChart);
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window.resize(400, 300);
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window.show();
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return a.exec();
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}
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#include "main.moc"
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