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