##// END OF EJS Templates
added stream operator to scatter series
added stream operator to scatter series

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r180:6a67b4477dab
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scatterpresenter.cpp
90 lines | 2.7 KiB | text/x-c | CppLexer
/ src / scatterpresenter.cpp
#include "scatterpresenter.h"
#include "qscatterseries.h"
#include <QPen>
#include <QPainter>
#include <QGraphicsScene>
#include <QDebug>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
ScatterPresenter::ScatterPresenter(QScatterSeries *series, QGraphicsObject *parent) :
ChartItem(parent),
m_series(series),
m_boundingRect(),
//m_markerColor(QColor()),
m_markerColor(QColor(255, 0, 0)),
m_visibleChartArea()
{
if (parent)
m_boundingRect = parent->boundingRect();
if (series) {
connect(series, SIGNAL(changed()), this, SLOT(handleModelChanged()));
}
}
void ScatterPresenter::handleDomainChanged(const Domain& domain)
{
m_visibleChartArea = domain;
changeGeometry();
}
void ScatterPresenter::handleGeometryChanged(const QRectF& rect)
{
m_boundingRect = rect;
changeGeometry();
}
void ScatterPresenter::handleModelChanged()
{
// TODO: more fine grained modelChanged signaling
changeGeometry();
}
void ScatterPresenter::paint(QPainter *painter, const QStyleOptionGraphicsItem */*option*/, QWidget */*widget*/)
{
// TODO: The opacity should be user definable?
//brush.setColor(QColor(255, 82, 0, 100));
if (m_markerColor.isValid()) {
QPen pen = painter->pen();
QBrush brush = pen.brush();
brush.setColor(m_markerColor);
pen.setBrush(brush);
pen.setWidth(4);
painter->setPen(pen);
}
else {
//painter->setPen(m_theme.markerPen);
// brush.setColor(m_theme..lineColor);
}
// TODO: m_scenex and m_sceny are left empty during construction -> we would need a resize
// event right after construction or maybe given a size during initialization
for (int i(0); i < m_scenex.count() && i < m_sceney.count(); i++) {
if (scene()->width() > m_scenex.at(i) && scene()->height() > m_sceney.at(i))
//painter->drawArc(m_scenex.at(i), m_sceney.at(i), 2, 2, 0, 5760);
painter->drawPoint(m_scenex.at(i), m_sceney.at(i));
}
}
void ScatterPresenter::changeGeometry()
{
if (m_boundingRect.isValid()) {
prepareGeometryChange();
qreal scalex = m_boundingRect.width() / m_visibleChartArea.spanX();
qreal scaley = m_boundingRect.height() / m_visibleChartArea.spanY();
m_scenex.clear();
m_sceney.clear();
// Convert relative coordinates to absolute pixel coordinates that can be used for drawing
foreach (QPointF point, m_series->data()) {
m_scenex.append(m_boundingRect.left() + point.x() * scalex - m_visibleChartArea.m_minX * scalex);
m_sceney.append(m_boundingRect.bottom() - point.y() * scaley + m_visibleChartArea.m_minY * scaley);
}
}
}
#include "moc_scatterpresenter.cpp"
QTCOMMERCIALCHART_END_NAMESPACE