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

drawing fix for bar chart

Tero Ahola - - Load All Authors

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             pieslice.cpp
        
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        Tero Ahola
    
Integrated draft version of pie series

              r51
            
      #include "pieslice.h"

      #include <QPainter>

      #include <QDebug>

      QTCOMMERCIALCHART_BEGIN_NAMESPACE

        Tero Ahola
    
Added size factor property to pie

              r60
            
      PieSlice::PieSlice(const QColor& color, qreal startAngle, qreal span, QRectF rect)

        Tero Ahola
    
Integrated draft version of pie series

              r51
            
          : m_color(color),

          m_startAngle(startAngle),

        Tero Ahola
    
Added size factor property to pie

              r60
            
          m_span(span),

          m_rect(rect)

        Tero Ahola
    
Integrated draft version of pie series

              r51
            
      {

          setAcceptHoverEvents(true);

      }

      PieSlice::~PieSlice()

      {

      }

      QRectF PieSlice::boundingRect() const

      {

        Tero Ahola
    
Added size factor property to pie

              r60
            
          return m_rect;

        Tero Ahola
    
Integrated draft version of pie series

              r51
            
      }

      QPainterPath PieSlice::shape() const

      {

          qreal angle = (-m_startAngle) + (90);

          qreal span = -m_span;

          QPainterPath path;

          path.moveTo(boundingRect().center());

          path.arcTo(boundingRect(), angle, span);

          // TODO: draw the shape so that it might have a hole in the center

          // - Sin & Cos will be needed to find inner/outer arc endpoints

          // dx, dy are offsets from the center

          //qreal l = boundingRect().height();

          //qreal dx = qSin(angle*(M_PI/180)) * l;

          //qreal dy = qCos(angle*(M_PI/180)) * l;

          // TODO: exploded slice?

          return path;

      }

      void PieSlice::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)

      {

          // Setup painter

          painter->setBrush(m_color);

        Tero Ahola
    
Theme now affects background, enabled zoom by default in QChartWidget

              r77
            
          painter->setRenderHint(QPainter::Antialiasing);

        Tero Ahola
    
Integrated draft version of pie series

              r51
            
          QPen pen;

          //pen.setColor(m_color.darker());

          pen.setColor(Qt::gray);

          pen.setWidth(1);

          painter->setPen(pen);

          // From Qt docs:

          // The startAngle and spanAngle must be specified in 1/16th of a degree, i.e. a full circle equals 5760 (16 * 360).

          // Positive values for the angles mean counter-clockwise while negative values mean the clockwise direction.

          // Zero degrees is at the 3 o'clock position.

          //

          // For sake of simplicity convert this so that zero degrees is at 12 o'clock and full circle is 360.

          //qreal angle = (-m_startAngle*16) + (90*16);

          //qreal span = -m_span*16;

          //painter->drawPie(boundingRect(), angle, span);

          painter->drawPath(shape());

      }

      void PieSlice::hoverEnterEvent(QGraphicsSceneHoverEvent * event)

      {

          QGraphicsItem::hoverEnterEvent(event);

          qDebug() << "hover" << m_color << m_startAngle << m_span;

      }

      QTCOMMERCIALCHART_END_NAMESPACE

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

		QTCOMMERCIALCHART_BEGIN_NAMESPACE

Tero Ahola Added size factor property to pie	r60	PieSlice::PieSlice(const QColor& color, qreal startAngle, qreal span, QRectF rect)
Tero Ahola Integrated draft version of pie series	r51	: m_color(color),
		m_startAngle(startAngle),
Tero Ahola Added size factor property to pie	r60	m_span(span),
		m_rect(rect)
Tero Ahola Integrated draft version of pie series	r51	{
		setAcceptHoverEvents(true);
		}

		PieSlice::~PieSlice()
		{
		}

		QRectF PieSlice::boundingRect() const
		{
Tero Ahola Added size factor property to pie	r60	return m_rect;
Tero Ahola Integrated draft version of pie series	r51	}

		QPainterPath PieSlice::shape() const
		{
		qreal angle = (-m_startAngle) + (90);
		qreal span = -m_span;

		QPainterPath path;
		path.moveTo(boundingRect().center());
		path.arcTo(boundingRect(), angle, span);

		// TODO: draw the shape so that it might have a hole in the center
		// - Sin & Cos will be needed to find inner/outer arc endpoints

		// dx, dy are offsets from the center
		//qreal l = boundingRect().height();
		//qreal dx = qSin(angle(M_PI/180)) l;
		//qreal dy = qCos(angle(M_PI/180)) l;

		// TODO: exploded slice?

		return path;
		}

		void PieSlice::paint(QPainter painter, const QStyleOptionGraphicsItem option, QWidget *widget)
		{
		// Setup painter
		painter->setBrush(m_color);
Tero Ahola Theme now affects background, enabled zoom by default in QChartWidget	r77	painter->setRenderHint(QPainter::Antialiasing);
Tero Ahola Integrated draft version of pie series	r51	QPen pen;
		//pen.setColor(m_color.darker());
		pen.setColor(Qt::gray);
		pen.setWidth(1);
		painter->setPen(pen);

		// From Qt docs:
		// The startAngle and spanAngle must be specified in 1/16th of a degree, i.e. a full circle equals 5760 (16 * 360).
		// Positive values for the angles mean counter-clockwise while negative values mean the clockwise direction.
		// Zero degrees is at the 3 o'clock position.
		//
		// For sake of simplicity convert this so that zero degrees is at 12 o'clock and full circle is 360.
		//qreal angle = (-m_startAngle16) + (9016);
		//qreal span = -m_span*16;
		//painter->drawPie(boundingRect(), angle, span);

		painter->drawPath(shape());
		}

		void PieSlice::hoverEnterEvent(QGraphicsSceneHoverEvent * event)
		{
		QGraphicsItem::hoverEnterEvent(event);
		qDebug() << "hover" << m_color << m_startAngle << m_span;
		}

		QTCOMMERCIALCHART_END_NAMESPACE