HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Files · example/scatter/main.cpp

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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      #include <QtGui/QApplication>

      #include <QMainWindow>

      #include <qchartglobal.h>

      #include <qchartview.h>

      #include <qscatterseries.h>

      QTCOMMERCIALCHART_USE_NAMESPACE

      int main(int argc, char *argv[])

      {

          QApplication a(argc, argv);

          //! [1]

          // Create chart view

          QChartView *chartView = new QChartView();

          chartView->setRenderHint(QPainter::Antialiasing);

          // Add scatter series with linear test data with random "noise"

          QScatterSeries *scatter = new QScatterSeries();

          for (qreal i(0.0); i < 20; i += 0.5) {

              qreal x = i + (qreal)(rand() % 100) / 100.0;

              qreal y = i + (qreal)(rand() % 100) / 100.0;

              (*scatter) << QPointF(x, y);

          }

          // Chart takes ownership

          chartView->addSeries(scatter);

          //! [1]

          // And more

          //! [2]

          *scatter << QPointF(2.0, 5.5) << QPointF(2.2, 5.4);

          //! [2]

          //! [3]

          QBrush brush(QColor(255, 0, 0, 80), Qt::SolidPattern);

          scatter->setBrush(brush);

          QPen pen(QColor(0, 255, 0, 60), 3);

          scatter->setPen(pen);

          scatter->setShape(QScatterSeries::MarkerShapeRectangle);

          scatter->setSize(25.0);

          //! [3]

          // Use the chart widget as the central widget

          QMainWindow w;

          w.resize(400, 300);

          w.setCentralWidget(chartView);

          w.setWindowFlags(Qt::FramelessWindowHint);

          w.show();

          return a.exec();

      }

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				#include <QtGui/QApplication>
				#include <QMainWindow>
				#include <qchartglobal.h>
				#include <qchartview.h>
				#include <qscatterseries.h>

				QTCOMMERCIALCHART_USE_NAMESPACE

				int main(int argc, char *argv[])
				{
				QApplication a(argc, argv);

				//! [1]
				// Create chart view
				QChartView *chartView = new QChartView();
				chartView->setRenderHint(QPainter::Antialiasing);
				// Add scatter series with linear test data with random "noise"
				QScatterSeries *scatter = new QScatterSeries();
				for (qreal i(0.0); i < 20; i += 0.5) {
				qreal x = i + (qreal)(rand() % 100) / 100.0;
				qreal y = i + (qreal)(rand() % 100) / 100.0;
				(*scatter) << QPointF(x, y);
				}
				// Chart takes ownership
				chartView->addSeries(scatter);
				//! [1]

				// And more
				//! [2]
				*scatter << QPointF(2.0, 5.5) << QPointF(2.2, 5.4);
				//! [2]

				//! [3]
				QBrush brush(QColor(255, 0, 0, 80), Qt::SolidPattern);
				scatter->setBrush(brush);
				QPen pen(QColor(0, 255, 0, 60), 3);
				scatter->setPen(pen);
				scatter->setShape(QScatterSeries::MarkerShapeRectangle);
				scatter->setSize(25.0);
				//! [3]

				// Use the chart widget as the central widget
				QMainWindow w;
				w.resize(400, 300);
				w.setCentralWidget(chartView);
				w.setWindowFlags(Qt::FramelessWindowHint);
				w.show();

				return a.exec();
				}