##// END OF EJS Templates
Better way to enable features to user. Do less, but expose signals to user and allow user to descide what to do.
Better way to enable features to user. Do less, but expose signals to user and allow user to descide what to do.

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main.cpp
82 lines | 2.3 KiB | text/x-c | CppLexer
#include <QApplication>
#include <QMainWindow>
#include <qchartview.h>
#include <qbarseries.h>
#include <qbarset.h>
#include <qchartaxis.h>
#include <QStringList>
QTCOMMERCIALCHART_USE_NAMESPACE
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QMainWindow window;
//! [1]
// Define categories
QStringList categories;
categories << "Jan" << "Feb" << "Mar" << "Apr" << "May" << "Jun";
//! [1]
//! [2]
// Create some test sets for chat
QBarSet *set0 = new QBarSet("Bub");
QBarSet *set1 = new QBarSet("Bob");
QBarSet *set2 = new QBarSet("Guybrush");
QBarSet *set3 = new QBarSet("Larry");
QBarSet *set4 = new QBarSet("Zak");
*set0 << 1 << 2 << 3 << 4 << 5 << 6;
*set1 << 5 << 0 << 0 << 4 << 0 << 7;
*set2 << 3 << 5 << 8 << 13 << 8 << 5;
*set3 << 5 << 6 << 7 << 3 << 4 << 5;
*set4 << 9 << 7 << 5 << 3 << 1 << 2;
//! [2]
//! [3]
// Create series and add sets to it
QBarSeries* series= new QBarSeries(categories);
series->addBarSet(set0);
series->addBarSet(set1);
series->addBarSet(set2);
series->addBarSet(set3);
series->addBarSet(set4);
//! [3]
//! [4]
// Enable tooltip
series->setToolTipEnabled();
// Connect clicked signal of set to toggle floating values of set.
// Note that we leave QBarset "Zak" unconnected here, so clicking on it doesn't toggle values.
QObject::connect(set0,SIGNAL(clicked(QString)),set0,SIGNAL(toggleFloatingValues()));
QObject::connect(set1,SIGNAL(clicked(QString)),set1,SIGNAL(toggleFloatingValues()));
QObject::connect(set2,SIGNAL(clicked(QString)),set2,SIGNAL(toggleFloatingValues()));
QObject::connect(set3,SIGNAL(clicked(QString)),set3,SIGNAL(toggleFloatingValues()));
//! [4]
//! [5]
// Create view for chart and add series to it. Apply theme.
QChartView* chartView = new QChartView(&window);
chartView->addSeries(series);
chartView->setChartTitle("simple barchart");
chartView->setChartTheme(QChart::ChartThemeIcy);
//! [5]
//! [6]
chartView->axisX()->setAxisVisible(false);
chartView->axisX()->setGridVisible(false);
chartView->axisX()->setLabelsVisible(false);
//! [6]
window.setCentralWidget(chartView);
window.resize(400, 300);
window.show();
return a.exec();
}