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#include "piepresenter.h"
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#include "pieslice.h"
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#include <QDebug>
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#include <QTime>
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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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}
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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 *, 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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}
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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.m_added;
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qDebug() << " changed: " << changeSet.m_changed;
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qDebug() << " removed: " << changeSet.m_removed;
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// ignore changeset when there are no visual slices
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// changeset might not be valid about the added slices
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if (m_slices.count() == 0) {
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foreach (QPieSliceId id, m_series->m_slices.keys())
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addSlice(id);
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return;
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}
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foreach (QPieSliceId id, changeSet.m_removed)
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deleteSlice(id);
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foreach (QPieSliceId id, changeSet.m_changed)
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updateSlice(id);
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foreach (QPieSliceId id, changeSet.m_added)
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addSlice(id);
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}
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void PiePresenter::updateGeometry()
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{
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prepareGeometryChange();
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m_pieRect = m_rect;
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if (m_pieRect.width() < m_pieRect.height()) {
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m_pieRect.setWidth(m_pieRect.width() * m_series->sizeFactor());
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m_pieRect.setHeight(m_pieRect.width());
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m_pieRect.moveCenter(m_rect.center());
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} else {
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m_pieRect.setHeight(m_pieRect.height() * m_series->sizeFactor());
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m_pieRect.setWidth(m_pieRect.height());
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m_pieRect.moveCenter(m_rect.center());
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}
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switch (m_series->position()) {
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case QPieSeries::PiePositionTopLeft: {
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m_pieRect.setHeight(m_pieRect.height() / 2);
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m_pieRect.setWidth(m_pieRect.height());
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m_pieRect.moveCenter(QPointF(m_rect.center().x() / 2, m_rect.center().y() / 2));
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break;
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}
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case QPieSeries::PiePositionTopRight: {
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m_pieRect.setHeight(m_pieRect.height() / 2);
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m_pieRect.setWidth(m_pieRect.height());
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m_pieRect.moveCenter(QPointF((m_rect.center().x() / 2) * 3, m_rect.center().y() / 2));
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break;
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}
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case QPieSeries::PiePositionBottomLeft: {
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m_pieRect.setHeight(m_pieRect.height() / 2);
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m_pieRect.setWidth(m_pieRect.height());
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m_pieRect.moveCenter(QPointF(m_rect.center().x() / 2, (m_rect.center().y() / 2) * 3));
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break;
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}
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case QPieSeries::PiePositionBottomRight: {
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m_pieRect.setHeight(m_pieRect.height() / 2);
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m_pieRect.setWidth(m_pieRect.height());
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m_pieRect.moveCenter(QPointF((m_rect.center().x() / 2) * 3, (m_rect.center().y() / 2) * 3));
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break;
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}
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default:
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break;
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}
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// update slice geometry
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const qreal fullPie = 360;
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qreal angle = 0;
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foreach (QPieSliceId id, m_slices.keys()) {
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qreal span = fullPie * m_series->slice(id).percentage();
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m_slices[id]->updateGeometry(m_pieRect, angle, span);
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angle += span;
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}
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//qDebug() << "PiePresenter::updateGeometry" << m_rect << m_pieRect;
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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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updateGeometry();
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}
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void PiePresenter::addSlice(QPieSliceId id)
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{
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qDebug() << "PiePresenter::addSlice()" << id;
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if (m_slices.contains(id)) {
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qWarning() << "PiePresenter::addSlice(): slice already exists!" << id;
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updateSlice(id);
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return;
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}
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// create slice
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PieSlice *slice = new PieSlice(id, m_series, this);
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m_slices.insert(id, slice);
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updateGeometry();
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}
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void PiePresenter::updateSlice(QPieSliceId id)
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{
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qDebug() << "PiePresenter::updateSlice()" << id;
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// TODO: animation
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if (m_slices.contains(id))
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m_slices.value(id)->updateData();
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else {
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qWarning() << "PiePresenter::updateSlice(): slice does not exist!" << id;
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addSlice(id);
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}
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updateGeometry();
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}
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void PiePresenter::deleteSlice(QPieSliceId id)
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{
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qDebug() << "PiePresenter::deleteSlice()" << id;
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// TODO: animation
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if (m_slices.contains(id))
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delete m_slices.take(id);
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else
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qWarning() << "PiePresenter::deleteSlice(): slice does not exist!" << id;
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updateGeometry();
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}
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#include "moc_piepresenter.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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