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#include "qpieseries.h"
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#include "qpieslice.h"
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#include <QDebug>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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/*!
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\class QPieSeries
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\brief Pie series API for QtCommercial Charts
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The pie series defines a pie chart which consists of pie slices which are QPieSlice objects.
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The slices can have any values as the QPieSeries will calculate its relative value to the sum of all slices.
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The actual slice size is determined by that relative value.
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By default the pie is defined as a full pie but it can be a partial pie.
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This can be done by setting a starting angle and angle span to the series.
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*/
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/*!
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Constructs a series object which is a child of \a parent.
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*/
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QPieSeries::QPieSeries(QObject *parent) :
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QSeries(parent),
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m_pieRelativeHorPos(0.5),
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m_pieRelativeVerPos(0.5),
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m_pieRelativeSize(0.7),
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m_pieStartAngle(0),
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m_pieEndAngle(360),
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m_total(0)
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{
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}
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/*!
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Destroys the object. Note that adding series to QChart transfers the ownership to the chart.
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*/
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QPieSeries::~QPieSeries()
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{
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}
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/*!
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Returns QChartSeries::SeriesTypePie.
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*/
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QSeries::QSeriesType QPieSeries::type() const
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{
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return QSeries::SeriesTypePie;
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}
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/*!
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Sets an array of \a slices to the series replacing the existing slices.
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Slice ownership is passed to the series.
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*/
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void QPieSeries::replace(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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/*!
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Adds an array of \a slices to the series.
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Slice ownership is passed to the series.
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*/
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void QPieSeries::add(QList<QPieSlice*> slices)
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{
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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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}
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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 added(slices);
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}
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/*!
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Adds a single \a slice to the series.
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Slice ownership is passed to the series.
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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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/*!
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Adds a single \a slice to the series and returns a reference to the series.
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Slice ownership is passed to the series.
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*/
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QPieSeries& QPieSeries::operator << (QPieSlice* slice)
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{
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add(slice);
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return *this;
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}
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/*!
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Adds a single slice to the series with give \a value and \a name.
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Slice ownership is passed to the series.
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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::insert(int i, QPieSlice* slice)
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{
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Q_ASSERT(i <= m_slices.count());
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slice->setParent(this);
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m_slices.insert(i, slice);
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updateDerivativeData();
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connect(slice, SIGNAL(changed()), this, SLOT(sliceChanged()));
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connect(slice, SIGNAL(clicked()), this, SLOT(sliceClicked()));
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connect(slice, SIGNAL(hoverEnter()), this, SLOT(sliceHoverEnter()));
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connect(slice, SIGNAL(hoverLeave()), this, SLOT(sliceHoverLeave()));
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emit added(QList<QPieSlice*>() << slice);
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}
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/*!
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Removes a single \a slice from the series and deletes the slice.
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Do not reference this pointer after this call.
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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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updateDerivativeData();
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emit removed(QList<QPieSlice*>() << slice);
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delete slice;
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slice = NULL;
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}
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/*!
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Clears all slices from the series.
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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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QList<QPieSlice*> slices = m_slices;
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foreach (QPieSlice* s, m_slices) {
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m_slices.removeOne(s);
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delete s;
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}
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updateDerivativeData();
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emit removed(slices);
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}
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/*!
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Counts the number of the slices in this series.
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*/
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int QPieSeries::count() const
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{
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return m_slices.count();
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}
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/*!
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Returns true is the series is empty.
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*/
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bool QPieSeries::isEmpty() const
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{
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return m_slices.isEmpty();
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}
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/*!
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Returns a list of slices that belong to this series.
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*/
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QList<QPieSlice*> QPieSeries::slices() const
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{
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return m_slices;
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}
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/*!
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Sets the center position of the pie by \a relativeHorizontalPosition and \a relativeVerticalPosition.
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The factors are relative to the chart rectangle where:
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\a relativeHorizontalPosition 0.0 means the absolute left.
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\a relativeHorizontalPosition 1.0 means the absolute right.
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\a relativeVerticalPosition 0.0 means the absolute top.
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\a relativeVerticalPosition 1.0 means the absolute bottom.
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By default both values are 0.5 which puts the pie in the middle of the chart rectangle.
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\sa pieHorizontalPosition(), pieVerticalPosition(), setPieSize()
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*/
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void QPieSeries::setPiePosition(qreal relativeHorizontalPosition, qreal relativeVerticalPosition)
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{
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if (relativeHorizontalPosition < 0.0 || relativeHorizontalPosition > 1.0 ||
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relativeVerticalPosition < 0.0 || relativeVerticalPosition > 1.0)
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return;
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if (m_pieRelativeHorPos != relativeHorizontalPosition || m_pieRelativeVerPos != relativeVerticalPosition) {
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m_pieRelativeHorPos = relativeHorizontalPosition;
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m_pieRelativeVerPos = relativeVerticalPosition;
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emit piePositionChanged();
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}
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}
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/*!
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Gets the horizontal position of the pie.
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The returned value is relative to the chart rectangle where:
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0.0 means the absolute left.
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1.0 means the absolute right.
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By default it is 0.5 which puts the pie in the horizontal middle of the chart rectangle.
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\sa setPiePosition(), pieVerticalPosition(), setPieSize()
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*/
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qreal QPieSeries::pieHorizontalPosition() const
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{
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return m_pieRelativeHorPos;
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}
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/*!
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Gets the vertical position position of the pie.
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The returned value is relative to the chart rectangle where:
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0.0 means the absolute top.
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1.0 means the absolute bottom.
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By default it is 0.5 which puts the pie in the vertical middle of the chart rectangle.
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\sa setPiePosition(), pieHorizontalPosition(), setPieSize()
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*/
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qreal QPieSeries::pieVerticalPosition() const
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{
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return m_pieRelativeVerPos;
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}
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/*!
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Sets the relative size of the pie.
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The \a relativeSize is defined so that the 1.0 is the maximum that can fit the given chart rectangle.
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Default value is 0.7.
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\sa pieSize(), setPiePosition(), pieVerticalPosition(), pieHorizontalPosition()
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*/
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void QPieSeries::setPieSize(qreal relativeSize)
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{
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if (relativeSize < 0.0 || relativeSize > 1.0)
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return;
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if (m_pieRelativeSize != relativeSize) {
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m_pieRelativeSize = relativeSize;
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emit pieSizeChanged();
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}
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}
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/*!
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Gets the relative size of the pie.
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The size is defined so that the 1.0 is the maximum that can fit the given chart rectangle.
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Default value is 0.7.
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\sa setPieSize(), setPiePosition(), pieVerticalPosition(), pieHorizontalPosition()
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*/
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qreal QPieSeries::pieSize() const
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{
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return m_pieRelativeSize;
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}
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/*!
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Sets the end angle of the pie.
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Full pie is 360 degrees where 0 degrees is at 12 a'clock.
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\a angle must be less than pie end angle. Default value is 0.
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\sa pieStartAngle(), pieEndAngle(), setPieEndAngle()
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*/
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void QPieSeries::setPieStartAngle(qreal angle)
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{
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if (angle >= 0 && angle <= 360 && angle != m_pieStartAngle && angle <= m_pieEndAngle) {
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m_pieStartAngle = angle;
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updateDerivativeData();
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}
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}
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/*!
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Gets the start angle of the pie.
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Full pie is 360 degrees where 0 degrees is at 12 a'clock. Default value is 360.
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\sa setPieStartAngle(), pieEndAngle(), setPieEndAngle()
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*/
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qreal QPieSeries::pieStartAngle() const
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{
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return m_pieStartAngle;
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}
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/*!
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Sets the end angle of the pie.
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Full pie is 360 degrees where 0 degrees is at 12 a'clock.
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\a angle must be greater than start angle.
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\sa pieEndAngle(), pieStartAngle(), setPieStartAngle()
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*/
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void QPieSeries::setPieEndAngle(qreal angle)
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{
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if (angle >= 0 && angle <= 360 && angle != m_pieEndAngle && angle >= m_pieStartAngle) {
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m_pieEndAngle = angle;
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updateDerivativeData();
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}
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}
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/*!
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Returns the end angle of the pie.
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Full pie is 360 degrees where 0 degrees is at 12 a'clock.
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\sa setPieEndAngle(), pieStartAngle(), setPieStartAngle()
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*/
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qreal QPieSeries::pieEndAngle() const
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{
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return m_pieEndAngle;
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}
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/*!
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Sets the all the slice labels \a visible or invisible.
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\sa QPieSlice::isLabelVisible(), QPieSlice::setLabelVisible()
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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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/*!
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Returns the sum of all slice values in this series.
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\sa QPieSlice::value(), QPieSlice::setValue()
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*/
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qreal QPieSeries::total() const
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{
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return m_total;
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}
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/*!
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\fn void QPieSeries::changed()
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This signal emitted when something has changed in the series.
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\sa QPieSeries::ChangeSet, QPieSlice::changed()
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*/
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/*!
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\fn void QPieSeries::clicked(QPieSlice* slice)
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This signal is emitted when a \a slice has been clicked.
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\sa QPieSlice::clicked()
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*/
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/*!
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\fn void QPieSeries::hoverEnter(QPieSlice* slice)
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This signal is emitted when user has hovered over a \a slice.
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\sa QPieSlice::hoverEnter()
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*/
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/*!
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\fn void QPieSeries::hoverLeave(QPieSlice* slice)
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This signal is emitted when user has hovered away from a \a slice.
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\sa QPieSlice::hoverLeave()
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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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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::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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// nothing to show..
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if (m_total == 0)
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return;
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// update slice attributes
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qreal sliceAngle = m_pieStartAngle;
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qreal pieSpan = m_pieEndAngle - m_pieStartAngle;
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QVector<QPieSlice*> changed;
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foreach (QPieSlice* s, m_slices) {
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bool isChanged = 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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isChanged = true;
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}
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qreal sliceSpan = pieSpan * percentage;
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if (s->m_angleSpan != sliceSpan) {
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s->m_angleSpan = sliceSpan;
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isChanged = true;
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}
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if (s->m_startAngle != sliceAngle) {
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s->m_startAngle = sliceAngle;
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isChanged = true;
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}
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sliceAngle += sliceSpan;
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if (isChanged)
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changed << s;
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}
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// emit signals
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foreach (QPieSlice* s, changed)
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emit s->changed();
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}
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bool QPieSeries::setModel(QAbstractItemModel* model)
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{
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// disconnect signals from old model
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if(m_model)
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{
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disconnect(m_model,SIGNAL(dataChanged(QModelIndex,QModelIndex)), 0, 0);
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disconnect(m_model,SIGNAL(rowsInserted(QModelIndex, int, int)), 0, 0);
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disconnect(m_model, SIGNAL(rowsRemoved(QModelIndex, int, int)), 0, 0);
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}
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// set new model if not NULL and connect necessary signals from it
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if(model)
|
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{
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m_model = model;
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connect(m_model,SIGNAL(dataChanged(QModelIndex,QModelIndex)), this, SLOT(modelUpdated(QModelIndex, QModelIndex)));
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connect(m_model,SIGNAL(rowsInserted(QModelIndex, int, int)), this, SLOT(modelDataAdded(QModelIndex,int,int)));
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|
connect(m_model, SIGNAL(rowsRemoved(QModelIndex, int, int)), this, SLOT(modelDataRemoved(QModelIndex,int,int)));
|
|
|
}
|
|
|
|
|
|
return true;
|
|
|
}
|
|
|
|
|
|
void QPieSeries::setModelMapping(int modelValuesLine, int modelLabelsLine, Qt::Orientation orientation)
|
|
|
{
|
|
|
m_mapValues = modelValuesLine;
|
|
|
m_mapLabels = modelLabelsLine;
|
|
|
m_mapOrientation = orientation;
|
|
|
|
|
|
if (m_model == NULL)
|
|
|
return;
|
|
|
|
|
|
if (m_mapOrientation == Qt::Vertical)
|
|
|
for (int i = 0; i < m_model->rowCount(); i++)
|
|
|
add(m_model->data(m_model->index(i, m_mapValues), Qt::DisplayRole).toDouble(), m_model->data(m_model->index(i, m_mapLabels), Qt::DisplayRole).toString());
|
|
|
else
|
|
|
for (int i = 0; i < m_model->columnCount(); i++)
|
|
|
add(m_model->data(m_model->index(m_mapValues, i), Qt::DisplayRole).toDouble(), m_model->data(m_model->index(m_mapLabels, i), Qt::DisplayRole).toString());
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
void QPieSeries::modelUpdated(QModelIndex topLeft, QModelIndex bottomRight)
|
|
|
{
|
|
|
Q_UNUSED(bottomRight)
|
|
|
|
|
|
if (m_mapOrientation == Qt::Vertical)
|
|
|
{
|
|
|
// slices().at(topLeft.row())->setValue(m_model->data(m_model->index(topLeft.row(), topLeft.column()), Qt::DisplayRole).toDouble());
|
|
|
if (topLeft.column() == m_mapValues)
|
|
|
slices().at(topLeft.row())->setValue(m_model->data(topLeft, Qt::DisplayRole).toDouble());
|
|
|
else if (topLeft.column() == m_mapLabels)
|
|
|
slices().at(topLeft.row())->setLabel(m_model->data(topLeft, Qt::DisplayRole).toString());
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
// slices().at(topLeft.column())->setValue(m_model->data(m_model->index(topLeft.row(), topLeft.column()), Qt::DisplayRole).toDouble());
|
|
|
if (topLeft.column() == m_mapValues)
|
|
|
slices().at(topLeft.column())->setValue(m_model->data(topLeft, Qt::DisplayRole).toDouble());
|
|
|
else if (topLeft.column() == m_mapLabels)
|
|
|
slices().at(topLeft.column())->setLabel(m_model->data(topLeft, Qt::DisplayRole).toString());
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void QPieSeries::modelDataAdded(QModelIndex parent, int start, int end)
|
|
|
{
|
|
|
Q_UNUSED(parent)
|
|
|
Q_UNUSED(end)
|
|
|
|
|
|
QPieSlice* newSlice = new QPieSlice;
|
|
|
newSlice->setLabelVisible(true);
|
|
|
if (m_mapOrientation == Qt::Vertical)
|
|
|
{
|
|
|
newSlice->setValue(m_model->data(m_model->index(start, m_mapValues), Qt::DisplayRole).toDouble());
|
|
|
newSlice->setLabel(m_model->data(m_model->index(start, m_mapLabels), Qt::DisplayRole).toString());
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
newSlice->setValue(m_model->data(m_model->index(m_mapValues, start), Qt::DisplayRole).toDouble());
|
|
|
newSlice->setLabel(m_model->data(m_model->index(m_mapLabels, start), Qt::DisplayRole).toString());
|
|
|
}
|
|
|
|
|
|
insert(start, newSlice);
|
|
|
}
|
|
|
|
|
|
void QPieSeries::modelDataRemoved(QModelIndex parent, int start, int end)
|
|
|
{
|
|
|
Q_UNUSED(parent)
|
|
|
Q_UNUSED(end)
|
|
|
remove(slices().at(start));
|
|
|
}
|
|
|
|
|
|
#include "moc_qpieseries.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
