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#include "splinechartitem_p.h"
#include "chartpresenter_p.h"
#include <QPainter>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
SplineChartItem::SplineChartItem(QSplineSeries* series, QGraphicsItem *parent) :
XYChartItem(series, parent),
m_series(series)
{
setZValue(ChartPresenter::LineChartZValue);
QObject::connect(series,SIGNAL(updated()),this,SLOT(handleUpdated()));
handleUpdated();
}
QRectF SplineChartItem::boundingRect() const
{
return m_rect;
}
QPainterPath SplineChartItem::shape() const
{
return m_path;
}
QPointF SplineChartItem::calculateGeometryControlPoint(int index) const
{
return XYChartItem::calculateGeometryPoint(m_series->controlPoint(index));
}
void SplineChartItem::setGeometry(QVector<QPointF>& points)
{
if(points.size()==0)
{
XYChartItem::setGeometry(points);
return;
}
QPainterPath splinePath;
const QPointF& point = points.at(0);
splinePath.moveTo(point);
for (int i = 0; i < points.size() - 1; i++)
{
const QPointF& point = points.at(i + 1);
splinePath.cubicTo(calculateGeometryControlPoint(2 * i), calculateGeometryControlPoint(2 * i + 1), point);
}
prepareGeometryChange();
m_path = splinePath;
m_rect = splinePath.boundingRect();
XYChartItem::setGeometry(points);
}
void SplineChartItem::setLinePen(const QPen& pen)
{
m_pen = pen;
}
//handlers
void SplineChartItem::handleUpdated()
{
//m_items.setVisible(m_series->pointsVisible());
setLinePen(m_series->pen());
update();
}
//painter
void SplineChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(widget);
Q_UNUSED(option);
painter->save();
painter->setClipRect(clipRect());
painter->setPen(m_pen);
painter->drawPath(m_path);
const QVector<QPointF> points = XYChartItem::points();
for (int i = 0; i < points.size() - 1; i++)
{
painter->setPen(Qt::red);
painter->drawEllipse(points[i], 2, 2);
painter->setPen(Qt::blue);
// painter->drawLine(m_series->at(i), m_series->controlPoint(2 * i));
// painter->drawLine(m_series->at(i + 1), m_series->controlPoint(2 * i + 1));
// painter->drawEllipse(calculateGeometryControlPoint(2 * i), 4, 4);
// painter->drawEllipse(calculateGeometryControlPoint(2 * i + 1), 4, 4);
}
if (points.count() > 0)
{
painter->setPen(Qt::red);
painter->drawEllipse(points[points.count() - 1], 2, 2);
}
painter->restore();
}
#include "moc_splinechartitem_p.cpp"
QTCOMMERCIALCHART_END_NAMESPACE
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