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#include "qpieseries.h"
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#include "qpieslice.h"
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#include "piepresenter.h"
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#include "pieslice.h"
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#include <QFontMetrics>
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#include <QDebug>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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void QPieSeries::ChangeSet::appendAdded(QPieSlice* slice)
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{
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if (!m_added.contains(slice))
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m_added << slice;
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}
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void QPieSeries::ChangeSet::appendAdded(QList<QPieSlice*> slices)
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{
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foreach (QPieSlice* s, slices)
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appendAdded(s);
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}
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void QPieSeries::ChangeSet::appendChanged(QPieSlice* slice)
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{
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if (!m_changed.contains(slice))
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m_changed << slice;
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}
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void QPieSeries::ChangeSet::appendRemoved(QPieSlice* slice)
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{
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if (!m_removed.contains(slice))
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m_removed << slice;
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}
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QList<QPieSlice*> QPieSeries::ChangeSet::added() const
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{
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return m_added;
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}
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QList<QPieSlice*> QPieSeries::ChangeSet::changed() const
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{
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return m_changed;
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}
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QList<QPieSlice*> QPieSeries::ChangeSet::removed() const
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{
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return m_removed;
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}
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bool QPieSeries::ChangeSet::isEmpty() const
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{
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if (m_added.count() || m_changed.count() || m_removed.count())
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return false;
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return true;
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}
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QPieSeries::QPieSeries(QObject *parent) :
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QChartSeries(parent),
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m_sizeFactor(1.0),
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m_position(PiePositionMaximized),
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m_pieStartAngle(0),
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m_pieSpan(360)
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{
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}
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QPieSeries::~QPieSeries()
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{
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}
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bool QPieSeries::setData(QList<qreal> data)
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{
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// TODO: remove this function
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QList<QPieSlice*> slices;
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foreach (qreal value, data)
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slices << new QPieSlice(value, QString::number(value));
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set(slices);
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return true;
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}
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void QPieSeries::set(QList<QPieSlice*> slices)
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{
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clear();
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add(slices);
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}
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void QPieSeries::add(QList<QPieSlice*> slices)
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{
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ChangeSet changeSet;
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foreach (QPieSlice* s, slices) {
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s->setParent(this);
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m_slices << s;
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changeSet.appendAdded(s);
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}
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updateDerivativeData();
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foreach (QPieSlice* s, slices) {
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connect(s, SIGNAL(changed()), this, SLOT(sliceChanged()));
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connect(s, SIGNAL(clicked()), this, SLOT(sliceClicked()));
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connect(s, SIGNAL(hoverEnter()), this, SLOT(sliceHoverEnter()));
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connect(s, SIGNAL(hoverLeave()), this, SLOT(sliceHoverLeave()));
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}
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emit changed(changeSet);
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}
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void QPieSeries::add(QPieSlice* slice)
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{
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add(QList<QPieSlice*>() << slice);
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}
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QPieSlice* QPieSeries::add(qreal value, QString name)
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{
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QPieSlice* slice = new QPieSlice(value, name);
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add(slice);
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return slice;
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}
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void QPieSeries::remove(QPieSlice* slice)
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{
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if (!m_slices.removeOne(slice)) {
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Q_ASSERT(0); // TODO: how should this be reported?
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return;
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}
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ChangeSet changeSet;
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changeSet.appendRemoved(slice);
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emit changed(changeSet);
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delete slice;
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slice = NULL;
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updateDerivativeData();
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}
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void QPieSeries::clear()
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{
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if (m_slices.count() == 0)
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return;
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ChangeSet changeSet;
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foreach (QPieSlice* s, m_slices) {
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changeSet.appendRemoved(s);
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m_slices.removeOne(s);
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delete s;
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}
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emit changed(changeSet);
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updateDerivativeData();
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}
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void QPieSeries::setSizeFactor(qreal factor)
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{
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if (factor < 0.0)
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return;
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if (m_sizeFactor != factor) {
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m_sizeFactor = factor;
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emit sizeFactorChanged();
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}
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}
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void QPieSeries::setPosition(PiePosition position)
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{
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if (m_position != position) {
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m_position = position;
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emit positionChanged();
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}
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}
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void QPieSeries::setSpan(qreal startAngle, qreal span)
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{
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if (startAngle >= 0 && startAngle < 360 &&
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span > 0 && span <= 360) {
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m_pieStartAngle = startAngle;
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m_pieSpan = span;
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updateDerivativeData();
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}
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}
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void QPieSeries::setLabelsVisible(bool visible)
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{
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foreach (QPieSlice* s, m_slices)
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s->setLabelVisible(visible);
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}
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void QPieSeries::enableClickExplodes(bool enable)
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{
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if (enable)
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connect(this, SIGNAL(clicked(QPieSlice*)), this, SLOT(toggleExploded(QPieSlice*)));
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else
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disconnect(this, SLOT(toggleExploded(QPieSlice*)));
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}
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void QPieSeries::enableHoverHighlight(bool enable)
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{
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if (enable) {
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connect(this, SIGNAL(hoverEnter(QPieSlice*)), this, SLOT(highlightOn(QPieSlice*)));
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connect(this, SIGNAL(hoverLeave(QPieSlice*)), this, SLOT(highlightOff(QPieSlice*)));
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} else {
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disconnect(this, SLOT(hoverEnter(QPieSlice*)));
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disconnect(this, SLOT(hoverLeave(QPieSlice*)));
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}
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}
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void QPieSeries::sliceChanged()
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{
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QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
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Q_ASSERT(m_slices.contains(slice));
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ChangeSet changeSet;
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changeSet.appendChanged(slice);
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emit changed(changeSet);
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updateDerivativeData();
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}
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void QPieSeries::sliceClicked()
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{
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QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
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Q_ASSERT(m_slices.contains(slice));
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emit clicked(slice);
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}
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void QPieSeries::sliceHoverEnter()
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{
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QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
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Q_ASSERT(m_slices.contains(slice));
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emit hoverEnter(slice);
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}
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void QPieSeries::sliceHoverLeave()
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{
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QPieSlice* slice = qobject_cast<QPieSlice *>(sender());
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Q_ASSERT(m_slices.contains(slice));
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emit hoverLeave(slice);
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}
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void QPieSeries::toggleExploded(QPieSlice* slice)
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{
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Q_ASSERT(slice);
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slice->setExploded(!slice->isExploded());
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}
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void QPieSeries::highlightOn(QPieSlice* slice)
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{
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Q_ASSERT(slice);
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QColor c = slice->brush().color().lighter();
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slice->setBrush(c);
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slice->setLabelVisible(true);
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}
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void QPieSeries::highlightOff(QPieSlice* slice)
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{
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Q_ASSERT(slice);
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QColor c = slice->brush().color().darker(150);
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slice->setBrush(c);
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slice->setLabelVisible(false);
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}
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void QPieSeries::updateDerivativeData()
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{
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m_total = 0;
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// nothing to do?
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if (m_slices.count() == 0)
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return;
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// calculate total
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foreach (QPieSlice* s, m_slices)
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m_total += s->value();
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// we must have some values
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Q_ASSERT(m_total > 0); // TODO: is this the correct way to handle this?
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// update slice attributes
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qreal sliceAngle = m_pieStartAngle;
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foreach (QPieSlice* s, m_slices) {
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bool changed = false;
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qreal percentage = s->value() / m_total;
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if (s->m_percentage != percentage) {
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s->m_percentage = percentage;
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changed = true;
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}
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qreal sliceSpan = m_pieSpan * percentage;
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if (s->m_angleSpan != sliceSpan) {
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s->m_angleSpan = sliceSpan;
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changed = true;
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}
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if (s->m_angle != sliceAngle) {
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s->m_angle = sliceAngle;
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changed = true;
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}
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sliceAngle += sliceSpan;
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if (changed)
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emit s->changed();
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}
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}
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#include "moc_qpieseries.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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