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#include "piepresenter_p.h"
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#include "pieslice_p.h"
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#include "qpieslice.h"
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#include "qpieseries.h"
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#include <QDebug>
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#include <QPainter>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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PiePresenter::PiePresenter(QGraphicsItem *parent, QPieSeries *series)
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:ChartItem(parent),
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m_series(series)
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{
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Q_ASSERT(series);
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connect(series, SIGNAL(changed(const QPieSeries::ChangeSet&)), this, SLOT(handleSeriesChanged(const QPieSeries::ChangeSet&)));
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connect(series, SIGNAL(sizeFactorChanged()), this, SLOT(updateGeometry()));
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connect(series, SIGNAL(positionChanged()), this, SLOT(updateGeometry()));
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if (m_series->count()) {
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QPieSeries::ChangeSet changeSet;
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changeSet.appendAdded(m_series->m_slices);
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handleSeriesChanged(changeSet);
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}
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}
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PiePresenter::~PiePresenter()
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{
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// slices deleted automatically through QGraphicsItem
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}
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void PiePresenter::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
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{
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// TODO: paint shadows for all components
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// - get paths from items & merge & offset and draw with shadow color?
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//painter->setBrush(QBrush(Qt::red));
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//painter->drawRect(m_debugRect);
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}
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void PiePresenter::handleSeriesChanged(const QPieSeries::ChangeSet& changeSet)
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{
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//qDebug() << "PiePresenter::handleSeriesChanged()";
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//qDebug() << " added : " << changeSet.added();
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//qDebug() << " changed: " << changeSet.changed();
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//qDebug() << " removed: " << changeSet.removed();
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foreach (QPieSlice* s, changeSet.added())
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addSlice(s);
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foreach (QPieSlice* s, changeSet.changed())
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updateSlice(s);
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foreach (QPieSlice* s, changeSet.removed())
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deleteSlice(s);
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// every change possibly changes the actual pie size
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updateGeometry();
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}
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void PiePresenter::handleDomainChanged(const Domain& domain)
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{
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// TODO
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}
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void PiePresenter::handleGeometryChanged(const QRectF& rect)
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{
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m_rect = rect;
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prepareGeometryChange();
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updateGeometry();
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}
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void PiePresenter::updateGeometry()
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{
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if (!m_rect.isValid() || m_rect.isEmpty())
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return;
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// find pie center coordinates
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QPointF center;
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center.setX(m_rect.left() + (m_rect.width() * m_series->m_hPositionFactor));
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center.setY(m_rect.top() + (m_rect.height() * m_series->m_vPositionFactor));
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// find maximum radius for pie
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qreal radius = m_rect.height() / 2;
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if (m_rect.width() < m_rect.height())
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radius = m_rect.width() / 2;
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// apply size factor
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radius *= m_series->m_pieSizeFactor;
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// update slices
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if (m_pieCenter != center || m_pieRadius != radius) {
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m_pieCenter = center;
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m_pieRadius = radius;
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//qDebug() << "PiePresenter::updateGeometry()" << m_rect << m_pieCenter << m_pieRadius;
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foreach (PieSlice* s, m_slices.values()) {
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s->setPieCenterAndRadius(center, radius);
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s->updateGeometry();
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s->update();
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}
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}
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update();
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}
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void PiePresenter::addSlice(QPieSlice* sliceData)
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{
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//qDebug() << "PiePresenter::addSlice()" << sliceData;
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if (m_slices.keys().contains(sliceData)) {
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Q_ASSERT(0); // TODO: how to handle this nicely?
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return;
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}
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// create slice
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PieSlice *slice = new PieSlice(this);
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slice->setPieCenterAndRadius(m_pieCenter, m_pieRadius);
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slice->updateData(sliceData);
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slice->updateGeometry();
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slice->update();
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m_slices.insert(sliceData, slice);
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// connect signals
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connect(slice, SIGNAL(clicked()), sliceData, SIGNAL(clicked()));
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connect(slice, SIGNAL(hoverEnter()), sliceData, SIGNAL(hoverEnter()));
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connect(slice, SIGNAL(hoverLeave()), sliceData, SIGNAL(hoverLeave()));
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}
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void PiePresenter::updateSlice(QPieSlice* sliceData)
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{
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//qDebug() << "PiePresenter::updateSlice()" << sliceData;
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if (!m_slices.contains(sliceData)) {
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Q_ASSERT(0); // TODO: how to handle this nicely?
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return;
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}
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m_slices[sliceData]->updateData(sliceData);
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}
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void PiePresenter::deleteSlice(QPieSlice* sliceData)
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{
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//qDebug() << "PiePresenter::deleteSlice()" << sliceData;
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if (!m_slices.contains(sliceData)) {
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Q_ASSERT(0); // TODO: how to handle this nicely?
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return;
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}
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delete m_slices.take(sliceData);
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}
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#include "moc_piepresenter_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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