|
|
#include "splinepresenter_p.h"
|
|
|
#include <QPainter>
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
SplinePresenter::SplinePresenter(QSplineSeries* series, QGraphicsObject *parent) :
|
|
|
LineChartItem(0, series, parent)//,m_boundingRect()
|
|
|
{
|
|
|
//
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
QPointF SplinePresenter::calculateGeometryControlPoint(int index) const
|
|
|
{
|
|
|
QSplineSeries* splineSeries = qobject_cast<QSplineSeries*>(m_series);
|
|
|
const qreal deltaX = m_size.width()/m_domain.spanX();
|
|
|
const qreal deltaY = m_size.height()/m_domain.spanY();
|
|
|
qreal x = (splineSeries->controlPoint(index).x() - m_domain.m_minX)* deltaX;
|
|
|
qreal y = (splineSeries->controlPoint(index).y() - m_domain.m_minY)*-deltaY + m_size.height();
|
|
|
return QPointF(x,y);
|
|
|
}
|
|
|
|
|
|
void SplinePresenter::applyGeometry(QVector<QPointF>& points)
|
|
|
{
|
|
|
if(points.size()==0) return;
|
|
|
|
|
|
QPainterPath splinePath;
|
|
|
const QPointF& point = points.at(0);
|
|
|
splinePath.moveTo(point);
|
|
|
|
|
|
QSplineSeries* splineSeries = qobject_cast<QSplineSeries*>(m_series);
|
|
|
for (int i = 0; i < splineSeries->count() - 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();
|
|
|
}
|
|
|
|
|
|
void SplinePresenter::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
|
|
|
{
|
|
|
Q_UNUSED(widget);
|
|
|
Q_UNUSED(option);
|
|
|
painter->save();
|
|
|
painter->setPen(m_pen);
|
|
|
painter->setClipRect(m_clipRect);
|
|
|
painter->drawPath(m_path);
|
|
|
|
|
|
QSplineSeries* splineSeries = qobject_cast<QSplineSeries*>(m_series);
|
|
|
for (int i = 0; i < splineSeries->count() - 1; i++)
|
|
|
{
|
|
|
painter->setPen(Qt::red);
|
|
|
painter->drawEllipse(m_points[i], 4, 4);
|
|
|
|
|
|
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 (m_points.count() > 0)
|
|
|
{
|
|
|
painter->setPen(Qt::red);
|
|
|
painter->drawEllipse(m_points[m_points.count() - 1], 4, 4);
|
|
|
}
|
|
|
painter->restore();
|
|
|
}
|
|
|
|
|
|
#include "moc_splinepresenter_p.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
