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Modified scientific theme
Modified scientific theme

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main.cpp
152 lines | 4.7 KiB | text/x-c | CppLexer
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r430 #include <QtGui/QApplication>
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r425 #include <QMainWindow>
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r430 #include <qchartglobal.h>
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r425 #include <qchartview.h>
#include <qstackedbarseries.h>
#include <qbarset.h>
#include <qchartaxis.h>
#include <QStringList>
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r430 #include <QDebug>
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QTCOMMERCIALCHART_USE_NAMESPACE
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r430 //! [1]
class DrilldownBarSeries : public QStackedBarSeries
{
Q_OBJECT
public:
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r449 DrilldownBarSeries(QStringList categories, QObject *parent = 0) : QStackedBarSeries(categories,parent) {}
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r438
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Documentation for stacked barchart drilldown example
r462 void mapDrilldownSeries(QString category, DrilldownBarSeries* drilldownSeries)
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r430 {
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r449 mDrilldownSeries[category] = drilldownSeries;
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r430 }
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DrilldownBarSeries* drilldownSeries(QString category)
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r449 {
return mDrilldownSeries[category];
}
public Q_SLOTS:
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private:
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QMap<QString, DrilldownBarSeries*> mDrilldownSeries;
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r430 };
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r449 //! [1]
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r430
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r449 //! [2]
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r430 class DrilldownChart : public QChartView
{
Q_OBJECT
public:
explicit DrilldownChart(QWidget *parent = 0) : QChartView(parent), m_currentSeries(0) {}
void changeSeries(QSeries* series)
{
if (m_currentSeries)
removeSeries(m_currentSeries);
m_currentSeries = series;
addSeries(series);
setChartTitle(series->title());
}
public Q_SLOTS:
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Documentation for stacked barchart drilldown example
r462 void handleRightClick(QBarSet *barset, QString category)
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r430 {
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Documentation for stacked barchart drilldown example
r462 // qDebug() << "DrilldownChart::handleRightClick" << barset->name() << category;
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r449 DrilldownBarSeries* series = static_cast<DrilldownBarSeries*> (sender());
changeSeries(series->drilldownSeries(category));
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r430 }
private:
QSeries* m_currentSeries;
};
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r449 //! [2]
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r430
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r425 int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QMainWindow window;
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r430 DrilldownChart* drilldownChart = new DrilldownChart(&window);
drilldownChart->setChartTheme(QChart::ChartThemeIcy);
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r449 //! [3]
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r425 // Define categories
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r430 QStringList months;
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r462 months << "May" << "Jun" << "Jul" << "Aug" << "Sep";
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r430 QStringList weeks;
weeks << "week 1" << "week 2" << "week 3" << "week 4";
QStringList plants;
plants << "Habanero" << "Lemon Drop" << "Starfish" << "Aji Amarillo";
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r449 //! [3]
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r438 //! [4]
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r449 // Create drilldown structure
DrilldownBarSeries* seasonSeries = new DrilldownBarSeries(months, drilldownChart);
seasonSeries->setTitle("Crop by month - Season");
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r425
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r449 // Each month in season series has drilldown series for weekly data
foreach (QString month, months) {
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r430
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r449 // Create drilldown series for every week
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r438 DrilldownBarSeries* weeklySeries = new DrilldownBarSeries(weeks, drilldownChart);
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r462 seasonSeries->mapDrilldownSeries(month, weeklySeries);
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r438
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r449 // Drilling down from weekly data brings us back to season data.
foreach (QString week, weeks) {
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r462 weeklySeries->mapDrilldownSeries(week, seasonSeries);
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r449 weeklySeries->setTitle(QString("Crop by week - " + month));
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r430 }
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r449 // Use right click signal to implement drilldown
QObject::connect(weeklySeries,SIGNAL(rightClicked(QBarSet*,QString)),drilldownChart,SLOT(handleRightClick(QBarSet*,QString)));
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r430 }
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Documentation for stacked barchart drilldown example
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// Enable drilldown from season series using right click.
QObject::connect(seasonSeries,SIGNAL(rightClicked(QBarSet*,QString)),drilldownChart,SLOT(handleRightClick(QBarSet*,QString)));
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r449 //! [4]
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r430
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r449 //! [5]
// Fill monthly and weekly series with data
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r438 foreach (QString plant, plants) {
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r449 QBarSet* monthlyCrop = new QBarSet(plant);
foreach (QString month, months) {
QBarSet* weeklyCrop = new QBarSet(plant);
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r438 foreach (QString week, weeks ) {
*weeklyCrop << (qrand() % 20);
}
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r462 // Get the drilldown series from season series and add crop to it.
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r449 seasonSeries->drilldownSeries(month)->addBarSet(weeklyCrop);
seasonSeries->drilldownSeries(month)->setToolTipEnabled(true);
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r438 *monthlyCrop << weeklyCrop->total();
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r449
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r438 QObject::connect(weeklyCrop,SIGNAL(clicked(QString)),weeklyCrop,SIGNAL(toggleFloatingValues()));
}
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r449 seasonSeries->addBarSet(monthlyCrop);
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r438 QObject::connect(monthlyCrop,SIGNAL(clicked(QString)),monthlyCrop,SIGNAL(toggleFloatingValues()));
}
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r449 //! [5]
seasonSeries->setToolTipEnabled(true);
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r462 //! [6]
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r449 // Show season series in initial view
drilldownChart->changeSeries(seasonSeries);
drilldownChart->setChartTitle(seasonSeries->title());
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r462 //! [6]
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r430
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r449 // Disable axis, since they don't really apply to bar chart
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r487 // drilldownChart->axisX()->setAxisVisible(false);
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r430 drilldownChart->axisX()->setGridVisible(false);
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r487 // drilldownChart->axisX()->setLabelsVisible(false);
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r430
window.setCentralWidget(drilldownChart);
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r425 window.resize(400, 300);
window.show();
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r430
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r425 return a.exec();
}
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r430 #include "main.moc"