HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Files · examples/donutbreakdown/donutbreakdownchart.cpp

Updated donut screen shots

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        Jani Honkonen
    
Refactored donutbreakdown example

              r1875
            
      #include "donutbreakdownchart.h"

      #include <QPieSlice>

      QTCOMMERCIALCHART_USE_NAMESPACE

      //![1]

      DonutBreakdownChart::DonutBreakdownChart(QGraphicsItem *parent, Qt::WindowFlags wFlags)

          :QChart(parent, wFlags)

      {

          // create the series for main center pie

          mainSeries = new QPieSeries();

          mainSeries->setPieSize(0.7);

        Jani Honkonen
    
Update donutbreakdown example docs

              r1888
            
          QChart::addSeries(mainSeries);

        Jani Honkonen
    
Refactored donutbreakdown example

              r1875
            
      }

      //![1]

      //![2]

      void DonutBreakdownChart::addBreakdownSeries(QPieSeries *breakdownSeries, QColor color)

      {

          // add breakdown series as a slice to center pie

          QPieSlice *slice = mainSeries->append(breakdownSeries->name(), breakdownSeries->sum());

          // customize the slice

          slice->setBrush(color);

          slice->setLabelVisible();

          slice->setLabelColor(Qt::white);

          slice->setLabelPosition(QPieSlice::LabelInsideHorizontal);

          // position and customize the breakdown series

          breakdownSeries->setPieSize(0.8);

          breakdownSeries->setHoleSize(0.7);

          breakdownSeries->setLabelsVisible();

          foreach (QPieSlice *slice, breakdownSeries->slices()) {

              color = color.lighter(110);

              slice->setBrush(color);

        Tero Ahola
    
Updated donut screen shots

              r1900
            
              slice->setLabelFont(QFont("Arial", 8));

        Jani Honkonen
    
Refactored donutbreakdown example

              r1875
            
              slice->setLabelArmLengthFactor(0.05);

          }

          // add the series to the chart

        Jani Honkonen
    
Update donutbreakdown example docs

              r1888
            
          QChart::addSeries(breakdownSeries);

        Jani Honkonen
    
Refactored donutbreakdown example

              r1875
            
          // recalculate breakdown donut segments

          recalculateAngles();

      }

      //![2]

        Jani Honkonen
    
Update donutbreakdown example docs

              r1888
            
      //![3]

        Jani Honkonen
    
Refactored donutbreakdown example

              r1875
            
      void DonutBreakdownChart::recalculateAngles()

      {

          qreal angle = 0;

          foreach (QPieSlice *slice, mainSeries->slices()) {

              QPieSeries *s = find(slice->label());

              if (s) {

                  s->setPieStartAngle(angle);

        Jani Honkonen
    
Update donutbreakdown example docs

              r1888
            
                  angle += slice->percentage() * 360.0; // full pie is 360.0

        Jani Honkonen
    
Refactored donutbreakdown example

              r1875
            
                  s->setPieEndAngle(angle);

              }

          }

      }

        Jani Honkonen
    
Update donutbreakdown example docs

              r1888
            
      //![3]

        Jani Honkonen
    
Refactored donutbreakdown example

              r1875
            
        Jani Honkonen
    
Update donutbreakdown example docs

              r1888
            
      //![4]

        Jani Honkonen
    
Refactored donutbreakdown example

              r1875
            
      QPieSeries *DonutBreakdownChart::find(QString seriesName) const

      {

          // find pieseries by name

        Jani Honkonen
    
Update donutbreakdown example docs

              r1888
            
          foreach (QAbstractSeries *series, QChart::series()) {

        Jani Honkonen
    
Refactored donutbreakdown example

              r1875
            
              QPieSeries *s = qobject_cast<QPieSeries*>(series);

              if (!s)

                  continue;

              if (s->name() == seriesName)

                  return s;

          }

          return 0;

      }

        Jani Honkonen
    
Update donutbreakdown example docs

              r1888
            
      //![4]

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Jani Honkonen Refactored donutbreakdown example	r1875	#include "donutbreakdownchart.h"
		#include <QPieSlice>

		QTCOMMERCIALCHART_USE_NAMESPACE

		//![1]
		DonutBreakdownChart::DonutBreakdownChart(QGraphicsItem *parent, Qt::WindowFlags wFlags)
		:QChart(parent, wFlags)
		{
		// create the series for main center pie
		mainSeries = new QPieSeries();
		mainSeries->setPieSize(0.7);
Jani Honkonen Update donutbreakdown example docs	r1888	QChart::addSeries(mainSeries);
Jani Honkonen Refactored donutbreakdown example	r1875	}
		//![1]

		//![2]
		void DonutBreakdownChart::addBreakdownSeries(QPieSeries *breakdownSeries, QColor color)
		{
		// add breakdown series as a slice to center pie
		QPieSlice *slice = mainSeries->append(breakdownSeries->name(), breakdownSeries->sum());

		// customize the slice
		slice->setBrush(color);
		slice->setLabelVisible();
		slice->setLabelColor(Qt::white);
		slice->setLabelPosition(QPieSlice::LabelInsideHorizontal);

		// position and customize the breakdown series
		breakdownSeries->setPieSize(0.8);
		breakdownSeries->setHoleSize(0.7);
		breakdownSeries->setLabelsVisible();
		foreach (QPieSlice *slice, breakdownSeries->slices()) {
		color = color.lighter(110);
		slice->setBrush(color);
Tero Ahola Updated donut screen shots	r1900	slice->setLabelFont(QFont("Arial", 8));
Jani Honkonen Refactored donutbreakdown example	r1875	slice->setLabelArmLengthFactor(0.05);
		}

		// add the series to the chart
Jani Honkonen Update donutbreakdown example docs	r1888	QChart::addSeries(breakdownSeries);
Jani Honkonen Refactored donutbreakdown example	r1875
		// recalculate breakdown donut segments
		recalculateAngles();
		}
		//![2]

Jani Honkonen Update donutbreakdown example docs	r1888	//![3]
Jani Honkonen Refactored donutbreakdown example	r1875	void DonutBreakdownChart::recalculateAngles()
		{
		qreal angle = 0;
		foreach (QPieSlice *slice, mainSeries->slices()) {
		QPieSeries *s = find(slice->label());
		if (s) {
		s->setPieStartAngle(angle);
Jani Honkonen Update donutbreakdown example docs	r1888	angle += slice->percentage() * 360.0; // full pie is 360.0
Jani Honkonen Refactored donutbreakdown example	r1875	s->setPieEndAngle(angle);
		}
		}
		}
Jani Honkonen Update donutbreakdown example docs	r1888	//![3]
Jani Honkonen Refactored donutbreakdown example	r1875
Jani Honkonen Update donutbreakdown example docs	r1888	//![4]
Jani Honkonen Refactored donutbreakdown example	r1875	QPieSeries *DonutBreakdownChart::find(QString seriesName) const
		{
		// find pieseries by name
Jani Honkonen Update donutbreakdown example docs	r1888	foreach (QAbstractSeries *series, QChart::series()) {
Jani Honkonen Refactored donutbreakdown example	r1875	QPieSeries s = qobject_cast<QPieSeries>(series);
		if (!s)
		continue;
		if (s->name() == seriesName)
		return s;
		}
		return 0;
		}
Jani Honkonen Update donutbreakdown example docs	r1888	//![4]