HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Files · src/qpieseries.cpp

Added bar chart to test widget

Tero Ahola - - Load All Authors

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             qpieseries.cpp
        
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        Tero Ahola
    
Integrated draft version of pie series

              r51
            
      #include "qpieseries.h"

      #include "pieslice.h"

      #include <QGraphicsObject>

      #include <QDebug>

      QTCOMMERCIALCHART_BEGIN_NAMESPACE

        Tero Ahola
    
Refactored series creation with QChart

              r61
            
      QPieSeries::QPieSeries(QGraphicsObject *parent) :

        Tero Ahola
    
Integrated draft version of pie series

              r51
            
          QChartSeries(parent),

        Tero Ahola
    
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              r60
            
          m_sizeFactor(1.0)

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              r51
            
      {

        Tero Ahola
    
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              r61
            
      }

      QPieSeries::~QPieSeries()

      {

          while (m_slices.count())

              delete m_slices.takeLast();

      }

      bool QPieSeries::setData(QList<qreal> data)

      {

          m_data = data;

        Tero Ahola
    
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              r54
            
          // Create slices

        Tero Ahola
    
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              r51
            
          qreal fullPie = 360;

          qreal total = 0;

        Tero Ahola
    
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              r61
            
          foreach (qreal value, m_data)

        Tero Ahola
    
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              r51
            
              total += value;

        Tero Ahola
    
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              r61
            
          QGraphicsItem *parentItem = qobject_cast<QGraphicsItem *>(parent());

        Tero Ahola
    
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              r51
            
          Q_ASSERT(parentItem);

        Tero Ahola
    
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              r60
            
          m_chartSize = parentItem->boundingRect();

        Tero Ahola
    
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              r51
            
          qreal angle = 0;

        Tero Ahola
    
Removed scale from chart's sizeChanged signals

              r54
            
          // TODO: no need to create new slices in case size changed; we should re-use the existing ones

        Tero Ahola
    
Refactored series creation with QChart

              r61
            
          foreach (qreal value, m_data) {

        Tero Ahola
    
Integrated draft version of pie series

              r51
            
              qreal span = value / total * fullPie;

        Tero Ahola
    
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              r60
            
              PieSlice *slice = new PieSlice(randomColor(), angle, span, parentItem->boundingRect());

        Tero Ahola
    
Integrated draft version of pie series

              r51
            
              slice->setParentItem(parentItem);

              m_slices.append(slice);

              angle += span;

          }

        Tero Ahola
    
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              r60
            
          resizeSlices(m_chartSize);

        Tero Ahola
    
Refactored series creation with QChart

              r61
            
          return true;

        Tero Ahola
    
Removed scale from chart's sizeChanged signals

              r54
            
      }

        Tero Ahola
    
Added size factor property to pie

              r60
            
      void QPieSeries::chartSizeChanged(QRectF chartRect)

        Tero Ahola
    
Removed scale from chart's sizeChanged signals

              r54
            
      {

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              r60
            
          // TODO: allow user setting the size?

          // TODO: allow user defining the margins?

          m_chartSize = chartRect;

          resizeSlices(m_chartSize);

      }

      void QPieSeries::resizeSlices(QRectF rect)

      {

          QRectF tempRect = rect;

          if (tempRect.width() < tempRect.height()) {

              tempRect.setWidth(tempRect.width() * m_sizeFactor);

              tempRect.setHeight(tempRect.width());

              tempRect.moveCenter(rect.center());

          } else {

              tempRect.setHeight(tempRect.height() * m_sizeFactor);

              tempRect.setWidth(tempRect.height());

              tempRect.moveCenter(rect.center());

          }

          foreach (PieSlice *slice, m_slices)

              slice->m_rect = tempRect;

      }

      void QPieSeries::setSizeFactor(qreal factor)

      {

          if (factor > 0.0)

              m_sizeFactor = factor;

          resizeSlices(m_chartSize);

          // Initiate update via the parent graphics item

          // TODO: potential issue: what if this function is called from the parent context?

          QGraphicsItem *parentItem = qobject_cast<QGraphicsItem *>(parent());

          Q_ASSERT(parentItem);

          parentItem->update();

        Tero Ahola
    
Removed scale from chart's sizeChanged signals

              r54
            
      }

        Tero Ahola
    
Integrated draft version of pie series

              r51
            
      QColor QPieSeries::randomColor()

      {

          QColor c;

          c.setRed(qrand() % 255);

          c.setGreen(qrand() % 255);

          c.setBlue(qrand() % 255);

          return c;

      }

      #include "moc_qpieseries.cpp"

      QTCOMMERCIALCHART_END_NAMESPACE

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Tero Ahola Integrated draft version of pie series	r51	#include "qpieseries.h"
		#include "pieslice.h"
		#include <QGraphicsObject>
		#include <QDebug>

		QTCOMMERCIALCHART_BEGIN_NAMESPACE

Tero Ahola Refactored series creation with QChart	r61	QPieSeries::QPieSeries(QGraphicsObject *parent) :
Tero Ahola Integrated draft version of pie series	r51	QChartSeries(parent),
Tero Ahola Added size factor property to pie	r60	m_sizeFactor(1.0)
Tero Ahola Integrated draft version of pie series	r51	{
Tero Ahola Refactored series creation with QChart	r61	}

		QPieSeries::~QPieSeries()
		{
		while (m_slices.count())
		delete m_slices.takeLast();
		}

		bool QPieSeries::setData(QList<qreal> data)
		{
		m_data = data;

Tero Ahola Removed scale from chart's sizeChanged signals	r54	// Create slices
Tero Ahola Integrated draft version of pie series	r51	qreal fullPie = 360;
		qreal total = 0;
Tero Ahola Refactored series creation with QChart	r61	foreach (qreal value, m_data)
Tero Ahola Integrated draft version of pie series	r51	total += value;

Tero Ahola Refactored series creation with QChart	r61	QGraphicsItem parentItem = qobject_cast<QGraphicsItem >(parent());
Tero Ahola Integrated draft version of pie series	r51	Q_ASSERT(parentItem);
Tero Ahola Added size factor property to pie	r60	m_chartSize = parentItem->boundingRect();
Tero Ahola Integrated draft version of pie series	r51	qreal angle = 0;
Tero Ahola Removed scale from chart's sizeChanged signals	r54	// TODO: no need to create new slices in case size changed; we should re-use the existing ones
Tero Ahola Refactored series creation with QChart	r61	foreach (qreal value, m_data) {
Tero Ahola Integrated draft version of pie series	r51	qreal span = value / total * fullPie;
Tero Ahola Added size factor property to pie	r60	PieSlice *slice = new PieSlice(randomColor(), angle, span, parentItem->boundingRect());
Tero Ahola Integrated draft version of pie series	r51	slice->setParentItem(parentItem);
		m_slices.append(slice);
		angle += span;
		}
Tero Ahola Added size factor property to pie	r60
		resizeSlices(m_chartSize);
Tero Ahola Refactored series creation with QChart	r61	return true;
Tero Ahola Removed scale from chart's sizeChanged signals	r54	}

Tero Ahola Added size factor property to pie	r60	void QPieSeries::chartSizeChanged(QRectF chartRect)
Tero Ahola Removed scale from chart's sizeChanged signals	r54	{
Tero Ahola Added size factor property to pie	r60	// TODO: allow user setting the size?
		// TODO: allow user defining the margins?
		m_chartSize = chartRect;
		resizeSlices(m_chartSize);
		}

		void QPieSeries::resizeSlices(QRectF rect)
		{
		QRectF tempRect = rect;
		if (tempRect.width() < tempRect.height()) {
		tempRect.setWidth(tempRect.width() * m_sizeFactor);
		tempRect.setHeight(tempRect.width());
		tempRect.moveCenter(rect.center());
		} else {
		tempRect.setHeight(tempRect.height() * m_sizeFactor);
		tempRect.setWidth(tempRect.height());
		tempRect.moveCenter(rect.center());
		}

		foreach (PieSlice *slice, m_slices)
		slice->m_rect = tempRect;
		}

		void QPieSeries::setSizeFactor(qreal factor)
		{
		if (factor > 0.0)
		m_sizeFactor = factor;
		resizeSlices(m_chartSize);

		// Initiate update via the parent graphics item
		// TODO: potential issue: what if this function is called from the parent context?
		QGraphicsItem parentItem = qobject_cast<QGraphicsItem >(parent());
		Q_ASSERT(parentItem);
		parentItem->update();
Tero Ahola Removed scale from chart's sizeChanged signals	r54	}

Tero Ahola Integrated draft version of pie series	r51	QColor QPieSeries::randomColor()
		{
		QColor c;
		c.setRed(qrand() % 255);
		c.setGreen(qrand() % 255);
		c.setBlue(qrand() % 255);
		return c;
		}


		#include "moc_qpieseries.cpp"

		QTCOMMERCIALCHART_END_NAMESPACE