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29
30#include "drilldownchart.h"
31#include <QtCharts/QBarCategoryAxis>
32#include <QtCharts/QValueAxis>
33
34QT_CHARTS_USE_NAMESPACE
35
36DrilldownChart::DrilldownChart(QGraphicsItem *parent, Qt::WindowFlags wFlags)
37 : QChart(QChart::ChartTypeCartesian, parent, wFlags),
38 m_currentSeries(0),
39 m_axisX(new QBarCategoryAxis()),
40 m_axisY(new QValueAxis())
41{
42 addAxis(axis: m_axisY, alignment: Qt::AlignLeft);
43 addAxis(axis: m_axisX, alignment: Qt::AlignBottom);
44}
45
46void DrilldownChart::changeSeries(DrilldownBarSeries *series)
47{
48 if (m_currentSeries)
49 removeSeries(series: m_currentSeries);
50
51 m_currentSeries = series;
52
53 // Reset axis
54 m_axisX->setCategories(m_currentSeries->categories());
55 addSeries(series);
56 series->attachAxis(axis: m_axisX);
57 series->attachAxis(axis: m_axisY);
58 m_axisY->setRange(min: 0,max: m_currentSeries->maxValue());
59 setTitle(series->name());
60}
61
62void DrilldownChart::handleClicked(int index, QBarSet *barset)
63{
64 Q_UNUSED(barset)
65 DrilldownBarSeries *series = static_cast<DrilldownBarSeries *>(sender());
66 changeSeries(series: series->drilldownSeries(index));
67}
68
69#include "moc_drilldownchart.cpp"
70

source code of qtcharts/examples/charts/stackedbarchartdrilldown/drilldownchart.cpp