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minor. add TODO comments
minor. add TODO comments

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main.cpp
170 lines | 5.1 KiB | text/x-c | CppLexer
Jani Honkonen
Add/modify license headers
r830 /****************************************************************************
**
** 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
** $QT_END_LICENSE$
**
****************************************************************************/
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r430 #include <QtGui/QApplication>
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r425 #include <QMainWindow>
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r838 #include <QChartView>
#include <QStackedBarSeries>
#include <QBarSet>
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r425
QTCOMMERCIALCHART_USE_NAMESPACE
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r430 //! [1]
class DrilldownBarSeries : public QStackedBarSeries
{
Q_OBJECT
public:
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r838 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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r438
DrilldownBarSeries* drilldownSeries(QString category)
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r449 {
return mDrilldownSeries[category];
}
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r430 private:
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r449 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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r829 class DrilldownChart : public QChart
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r430 {
Q_OBJECT
public:
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r838 explicit DrilldownChart(QGraphicsItem *parent = 0, Qt::WindowFlags wFlags = 0)
:QChart(parent, wFlags),
m_currentSeries(0)
{
}
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r430
void changeSeries(QSeries* series)
{
if (m_currentSeries)
removeSeries(m_currentSeries);
m_currentSeries = series;
addSeries(series);
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r829 setTitle(series->name());
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r430 }
public Q_SLOTS:
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r829 void handleClicked(QBarSet *barset, QString category, Qt::MouseButtons button)
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r430 {
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r613 Q_UNUSED(barset)
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r838 Q_UNUSED(button)
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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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r829 DrilldownChart* drilldownChart = new DrilldownChart();
drilldownChart->setTheme(QChart::ChartThemeBlueIcy);
drilldownChart->setAnimationOptions(QChart::SeriesAnimations);
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r430
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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);
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r733 seasonSeries->setName("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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Documentation for stacked barchart drilldown example
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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r733 weeklySeries->setName(QString("Crop by week - " + month));
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r430 }
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r449 // Use right click signal to implement drilldown
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r829 QObject::connect(weeklySeries, SIGNAL(clicked(QBarSet*,QString,Qt::MouseButtons)), drilldownChart, SLOT(handleClicked(QBarSet*,QString,Qt::MouseButtons)));
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r430 }
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Documentation for stacked barchart drilldown example
r462
// Enable drilldown from season series using right click.
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r829 QObject::connect(seasonSeries, SIGNAL(clicked(QBarSet*,QString,Qt::MouseButtons)), drilldownChart, SLOT(handleClicked(QBarSet*,QString,Qt::MouseButtons)));
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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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r829 foreach (QString week, weeks )
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r438 *weeklyCrop << (qrand() % 20);
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Documentation for stacked barchart drilldown example
r462 // Get the drilldown series from season series and add crop to it.
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r829 seasonSeries->drilldownSeries(month)->appendBarSet(weeklyCrop);
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r449 seasonSeries->drilldownSeries(month)->setToolTipEnabled(true);
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r438 *monthlyCrop << weeklyCrop->total();
}
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r829 seasonSeries->appendBarSet(monthlyCrop);
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r438 }
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r449 //! [5]
seasonSeries->setToolTipEnabled(true);
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Documentation for stacked barchart drilldown example
r462 //! [6]
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r449 // Show season series in initial view
drilldownChart->changeSeries(seasonSeries);
Jani Honkonen
Make stackedbarchartdrilldown compile
r829 drilldownChart->setTitle(seasonSeries->name());
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Documentation for stacked barchart drilldown example
r462 //! [6]
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r430
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r535 drilldownChart->axisX()->setGridLineVisible(false);
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r430
Jani Honkonen
Make stackedbarchartdrilldown compile
r829 QChartView *chartView = new QChartView(drilldownChart);
window.setCentralWidget(chartView);
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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"