HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Files · example/colorlinechart/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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             main.cpp
        
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      #include <QApplication>

      #include <QMainWindow>

      #include <qchartview.h>

      #include <qlineseries.h>

      #include <qchart.h>

      #include <cmath>

      QTCOMMERCIALCHART_USE_NAMESPACE

      #define PI 3.14159265358979

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

      {

          QApplication a(argc, argv);

          QMainWindow window;

          QLineSeries* series0 = new QLineSeries();

          QPen blue(Qt::blue);

          blue.setWidth(3);

          series0->setPen(blue);

          QLineSeries* series1 = new QLineSeries();

          QPen red(Qt::red);

          red.setWidth(3);

          series1->setPen(red);

          int numPoints = 100;

          for (int x = 0; x <= numPoints; ++x) {

          	  series0->add(x, fabs(sin(PI/50*x)*100));

          	  series1->add(x, fabs(cos(PI/50*x)*100));

          }

          QChartView* chartView =  new QChartView(&window);

          chartView->setRenderHint(QPainter::Antialiasing);

          QFont font;

          font.setPixelSize(18);

          chartView->setChartTitleFont(font);

          chartView->setChartTitle("Custom color line chart example");

          chartView->addSeries(series0);

          chartView->addSeries(series1);

          QLinearGradient backgroundGradient;

          backgroundGradient.setColorAt(0.0, Qt::blue);

          backgroundGradient.setColorAt(1.0, Qt::yellow);

          backgroundGradient.setCoordinateMode(QGradient::ObjectBoundingMode);

          chartView->setChartBackgroundBrush(backgroundGradient);

          window.setCentralWidget(chartView);

          window.resize(400, 300);

          window.show();

          return a.exec();

      }

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				#include <QApplication>
				#include <QMainWindow>
				#include <qchartview.h>
				#include <qlineseries.h>
				#include <qchart.h>
				#include <cmath>

				QTCOMMERCIALCHART_USE_NAMESPACE

				#define PI 3.14159265358979

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

				QMainWindow window;

				QLineSeries* series0 = new QLineSeries();
				QPen blue(Qt::blue);
				blue.setWidth(3);
				series0->setPen(blue);
				QLineSeries* series1 = new QLineSeries();
				QPen red(Qt::red);
				red.setWidth(3);
				series1->setPen(red);

				int numPoints = 100;

				for (int x = 0; x <= numPoints; ++x) {
				series0->add(x, fabs(sin(PI/50x)100));
				series1->add(x, fabs(cos(PI/50x)100));
				}

				QChartView* chartView = new QChartView(&window);
				chartView->setRenderHint(QPainter::Antialiasing);

				QFont font;
				font.setPixelSize(18);
				chartView->setChartTitleFont(font);
				chartView->setChartTitle("Custom color line chart example");
				chartView->addSeries(series0);
				chartView->addSeries(series1);

				QLinearGradient backgroundGradient;
				backgroundGradient.setColorAt(0.0, Qt::blue);
				backgroundGradient.setColorAt(1.0, Qt::yellow);
				backgroundGradient.setCoordinateMode(QGradient::ObjectBoundingMode);
				chartView->setChartBackgroundBrush(backgroundGradient);

				window.setCentralWidget(chartView);
				window.resize(400, 300);
				window.show();

				return a.exec();
				}