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#include "areachartitem_p.h"
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#include "qareaseries.h"
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#include "qlineseries.h"
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#include "chartpresenter_p.h"
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#include <QPainter>
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#include <QGraphicsSceneMouseEvent>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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//TODO: optimize : remove points which are not visible
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AreaChartItem::AreaChartItem(QAreaSeries* areaSeries,QGraphicsItem *parent):ChartItem(parent),
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m_series(areaSeries),
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m_upper(0),
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m_lower(0),
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m_pointsVisible(false)
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{
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setZValue(ChartPresenter::LineChartZValue);
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m_upper = new AreaBoundItem(this,m_series->upperSeries());
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if(m_series->lowerSeries()){
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m_lower = new AreaBoundItem(this,m_series->lowerSeries());
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}
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QObject::connect(areaSeries,SIGNAL(updated()),this,SLOT(handleUpdated()));
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QObject::connect(this,SIGNAL(clicked(const QPointF&)),areaSeries,SIGNAL(clicked(const QPointF&)));
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handleUpdated();
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}
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AreaChartItem::~AreaChartItem()
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{
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delete m_upper;
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delete m_lower;
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};
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QRectF AreaChartItem::boundingRect() const
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{
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return m_rect;
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}
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QPainterPath AreaChartItem::shape() const
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{
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return m_path;
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}
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void AreaChartItem::updatePath()
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{
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QPainterPath path;
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path.connectPath(m_upper->shape());
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if(m_lower){
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path.connectPath(m_lower->shape().toReversed());
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}
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else{
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QPointF first = path.pointAtPercent(0);
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QPointF last = path.pointAtPercent(1);
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path.lineTo(last.x(),m_clipRect.bottom());
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path.lineTo(first.x(),m_clipRect.bottom());
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}
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path.closeSubpath();
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prepareGeometryChange();
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m_path=path;
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m_rect=path.boundingRect();
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update();
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}
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void AreaChartItem::handleUpdated()
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{
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m_pointsVisible = m_series->pointsVisible();
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m_linePen = m_series->pen();
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m_brush = m_series->brush();
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m_pointPen = m_series->pen();
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m_pointPen.setWidthF(2*m_pointPen.width());
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update();
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}
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void AreaChartItem::handleDomainChanged(qreal minX, qreal maxX, qreal minY, qreal maxY)
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{
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m_upper->handleDomainChanged(minX,maxX,minY,maxY);
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if(m_lower)
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m_lower->handleDomainChanged(minX,maxX,minY,maxY);
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}
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void AreaChartItem::handleGeometryChanged(const QRectF& rect)
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{
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m_clipRect=rect.translated(-rect.topLeft());
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setPos(rect.topLeft());
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m_upper->handleGeometryChanged(rect);
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if(m_lower)
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m_lower->handleGeometryChanged(rect);
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}
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//painter
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void AreaChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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Q_UNUSED(widget);
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Q_UNUSED(option);
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painter->save();
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painter->setPen(m_linePen);
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painter->setBrush(m_brush);
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painter->setClipRect(m_clipRect);
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painter->drawPath(m_path);
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if(m_pointsVisible){
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painter->setPen(m_pointPen);
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painter->drawPoints(m_upper->points());
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if(m_lower) painter->drawPoints(m_lower->points());
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}
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painter->restore();
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}
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void AreaChartItem::mousePressEvent( QGraphicsSceneMouseEvent * event )
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{
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emit clicked(m_upper->calculateDomainPoint(event->pos()));
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}
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#include "moc_areachartitem_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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