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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qpieseries.h"
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#include "qpieseriesprivate_p.h"
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#include "qpieslice.h"
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#include "pieslicedata_p.h"
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#include <QAbstractItemModel>
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#include <QDebug>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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QPieSeriesPrivate::QPieSeriesPrivate(QPieSeries *parent)
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:QObject(parent),
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q_ptr(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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m_mapValues(0),
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m_mapLabels(0),
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m_mapOrientation(Qt::Horizontal)
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{
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}
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QPieSeriesPrivate::~QPieSeriesPrivate()
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{
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}
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void QPieSeriesPrivate::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 (qFuzzyIsNull(m_total))
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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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PieSliceData data = PieSliceData::data(s);
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data.m_percentage = s->value() / m_total;
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data.m_angleSpan = pieSpan * data.m_percentage;
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data.m_startAngle = sliceAngle;
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sliceAngle += data.m_angleSpan;
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if (PieSliceData::data(s) != data) {
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PieSliceData::data(s) = data;
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changed << s;
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}
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}
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// emit signals
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foreach (QPieSlice* s, changed)
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PieSliceData::data(s).emitChangedSignal(s);
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}
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void QPieSeriesPrivate::sliceChanged()
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{
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Q_ASSERT(m_slices.contains(qobject_cast<QPieSlice *>(sender())));
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updateDerivativeData();
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}
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void QPieSeriesPrivate::sliceClicked(Qt::MouseButtons buttons)
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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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Q_Q(QPieSeries);
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emit q->clicked(slice, buttons);
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}
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void QPieSeriesPrivate::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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Q_Q(QPieSeries);
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emit q->hoverEnter(slice);
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}
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void QPieSeriesPrivate::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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Q_Q(QPieSeries);
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emit q->hoverLeave(slice);
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}
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void QPieSeriesPrivate::modelUpdated(QModelIndex topLeft, QModelIndex bottomRight)
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{
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Q_UNUSED(bottomRight)
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Q_Q(QPieSeries);
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if (m_mapOrientation == Qt::Vertical)
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{
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if (topLeft.column() == m_mapValues)
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if (m_mapValues == m_mapLabels)
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{
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m_slices.at(topLeft.row())->setValue(q->m_model->data(topLeft, Qt::DisplayRole).toDouble());
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m_slices.at(topLeft.row())->setLabel(q->m_model->data(topLeft, Qt::DisplayRole).toString());
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}
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else
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{
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m_slices.at(topLeft.row())->setValue(q->m_model->data(topLeft, Qt::DisplayRole).toDouble());
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}
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else if (topLeft.column() == m_mapLabels)
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m_slices.at(topLeft.row())->setLabel(q->m_model->data(topLeft, Qt::DisplayRole).toString());
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}
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else
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{
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if (topLeft.row() == m_mapValues)
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if (m_mapValues == m_mapLabels)
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{
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m_slices.at(topLeft.column())->setValue(q->m_model->data(topLeft, Qt::DisplayRole).toDouble());
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m_slices.at(topLeft.column())->setLabel(q->m_model->data(topLeft, Qt::DisplayRole).toString());
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}
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else
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{
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m_slices.at(topLeft.column())->setValue(q->m_model->data(topLeft, Qt::DisplayRole).toDouble());
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}
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else if (topLeft.row() == m_mapLabels)
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m_slices.at(topLeft.column())->setLabel(q->m_model->data(topLeft, Qt::DisplayRole).toString());
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}
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}
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void QPieSeriesPrivate::modelDataAdded(QModelIndex parent, int start, int end)
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{
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Q_UNUSED(parent)
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Q_UNUSED(end)
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Q_Q(QPieSeries);
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QPieSlice* newSlice = new QPieSlice;
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newSlice->setLabelVisible(true);
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if (m_mapOrientation == Qt::Vertical)
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{
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newSlice->setValue(q->m_model->data(q->m_model->index(start, m_mapValues), Qt::DisplayRole).toDouble());
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newSlice->setLabel(q->m_model->data(q->m_model->index(start, m_mapLabels), Qt::DisplayRole).toString());
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}
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else
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{
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newSlice->setValue(q->m_model->data(q->m_model->index(m_mapValues, start), Qt::DisplayRole).toDouble());
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newSlice->setLabel(q->m_model->data(q->m_model->index(m_mapLabels, start), Qt::DisplayRole).toString());
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}
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q->insert(start, newSlice);
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}
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void QPieSeriesPrivate::modelDataRemoved(QModelIndex parent, int start, int end)
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{
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Q_UNUSED(parent)
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Q_UNUSED(end)
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Q_Q(QPieSeries);
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q->remove(m_slices.at(start));
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}
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bool QPieSeriesPrivate::setRealValue(qreal &value, qreal newValue, qreal max, qreal min)
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{
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// Remove rounding errors
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qreal roundedValue = newValue;
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if (qFuzzyIsNull(min) && qFuzzyIsNull(newValue))
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roundedValue = 0.0;
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else if (qFuzzyCompare(newValue, max))
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roundedValue = max;
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else if (qFuzzyCompare(newValue, min))
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roundedValue = min;
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// Check if the position is valid after removing the rounding errors
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if (roundedValue < min || roundedValue > max) {
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qWarning("QPieSeries: Illegal value");
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return false;
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}
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if (!qFuzzyIsNull(value - roundedValue)) {
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value = roundedValue;
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return true;
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}
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// The change was so small it is considered a rounding error
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return false;
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}
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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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d_ptr(new QPieSeriesPrivate(this))
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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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// NOTE: d_prt destroyed by QObject
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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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append(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::append(QList<QPieSlice*> slices)
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{
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Q_D(QPieSeries);
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foreach (QPieSlice* s, slices) {
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s->setParent(this);
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d->m_slices << s;
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}
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d->updateDerivativeData();
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foreach (QPieSlice* s, slices) {
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connect(s, SIGNAL(changed()), d, SLOT(sliceChanged()));
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connect(s, SIGNAL(clicked(Qt::MouseButtons)), d, SLOT(sliceClicked(Qt::MouseButtons)));
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connect(s, SIGNAL(hoverEnter()), d, SLOT(sliceHoverEnter()));
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connect(s, SIGNAL(hoverLeave()), d, 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::append(QPieSlice* slice)
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{
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append(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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append(slice);
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return *this;
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}
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/*!
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Appends 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::append(qreal value, QString name)
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{
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QPieSlice* slice = new QPieSlice(value, name);
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append(slice);
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return slice;
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}
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/*!
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Inserts a single \a slice to the series before the slice at \a index position.
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Slice ownership is passed to the series.
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*/
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void QPieSeries::insert(int index, QPieSlice* slice)
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{
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Q_D(QPieSeries);
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Q_ASSERT(index <= d->m_slices.count());
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slice->setParent(this);
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d->m_slices.insert(index, slice);
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d->updateDerivativeData();
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connect(slice, SIGNAL(changed()), d, SLOT(sliceChanged()));
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connect(slice, SIGNAL(clicked(Qt::MouseButtons)), d, SLOT(sliceClicked(Qt::MouseButtons)));
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connect(slice, SIGNAL(hoverEnter()), d, SLOT(sliceHoverEnter()));
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connect(slice, SIGNAL(hoverLeave()), d, 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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Q_D(QPieSeries);
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if (!d->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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d->updateDerivativeData();
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emit removed(QList<QPieSlice*>() << slice);
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delete slice;
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slice = 0;
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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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Q_D(QPieSeries);
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if (d->m_slices.count() == 0)
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return;
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QList<QPieSlice*> slices = d->m_slices;
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foreach (QPieSlice* s, d->m_slices) {
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d->m_slices.removeOne(s);
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delete s;
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}
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d->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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Q_D(const QPieSeries);
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return d->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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Q_D(const QPieSeries);
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return d->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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Q_D(const QPieSeries);
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return d->m_slices;
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}
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/*!
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Sets the horizontal center position of the pie to \relativePosition. If \relativePosition is
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set to 0.0 the pie is drawn on the left side of the chart and if it's set to 1.0 the pie is
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drawn on right side of the chart. The default value 0.5 puts the pie in the middle.
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\sa setHorizontalPosition(), setPieSize()
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*/
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void QPieSeries::setHorizontalPosition(qreal relativePosition)
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{
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Q_D(QPieSeries);
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if (d->setRealValue(d->m_pieRelativeHorPos, relativePosition, 1.0))
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emit piePositionChanged();
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}
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/*!
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Sets the vertical center position of the pie to \relativePosition. If \relativePosition is
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set to 0.0 the pie is drawn on the top of the chart and if it's set to 1.0 the pie is drawn
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on bottom of the chart. The default value 0.5 puts the pie in the middle.
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\sa setVerticalPosition(), setPieSize()
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*/
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void QPieSeries::setVerticalPosition(qreal relativePosition)
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{
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Q_D(QPieSeries);
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if (d->setRealValue(d->m_pieRelativeVerPos, relativePosition, 1.0))
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emit piePositionChanged();
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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 verticalPosition(), setPieSize()
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*/
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qreal QPieSeries::horizontalPosition() const
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{
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Q_D(const QPieSeries);
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return d->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 horizontalPosition(), setPieSize()
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*/
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qreal QPieSeries::verticalPosition() const
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{
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Q_D(const QPieSeries);
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return d->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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Q_D(QPieSeries);
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if (d->setRealValue(d->m_pieRelativeSize, relativeSize, 1.0))
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emit pieSizeChanged();
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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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Q_D(const QPieSeries);
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return d->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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Q_D(QPieSeries);
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if (d->setRealValue(d->m_pieStartAngle, angle, d->m_pieEndAngle))
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d->updateDerivativeData();
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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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Q_D(const QPieSeries);
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return d->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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Q_D(QPieSeries);
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if (d->setRealValue(d->m_pieEndAngle, angle, 360.0, d->m_pieStartAngle))
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d->updateDerivativeData();
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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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Q_D(const QPieSeries);
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return d->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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Q_D(QPieSeries);
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foreach (QPieSlice* s, d->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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Q_D(const QPieSeries);
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return d->m_total;
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}
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/*!
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\fn void QPieSeries::clicked(QPieSlice* slice, Qt::MouseButtons buttons)
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This signal is emitted when a \a slice has been clicked with mouse \a buttons.
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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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/*!
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\fn void QPieSeries::added(QList<QPieSlice*> slices)
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This signal is emitted when \a slices has been added to the series.
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\sa append(), insert()
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*/
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/*!
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\fn void QPieSeries::removed(QList<QPieSlice*> slices)
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This signal is emitted when \a slices has been removed from the series.
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\sa remove(), clear()
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*/
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/*!
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\fn void QPieSeries::piePositionChanged()
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|
This signal is emitted when pie position has changed.
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|
\sa verticalPosition(), setVerticalPosition(), horizontalPosition(), setHorizontalPosition()
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|
*/
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/*!
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|
|
\fn void QPieSeries::pieSizeChanged()
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|
|
|
This signal is emitted when pie size has changed.
|
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|
\sa pieSize(), setPieSize()
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*/
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|
/*!
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|
\fn bool QPieSeries::setModel(QAbstractItemModel *model)
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|
Sets the \a model to be used as a data source
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|
|
*/
|
|
|
bool QPieSeries::setModel(QAbstractItemModel* model)
|
|
|
{
|
|
|
Q_D(QPieSeries);
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|
|
// disconnect signals from old model
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|
|
if(m_model)
|
|
|
{
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|
|
disconnect(m_model, 0, this, 0);
|
|
|
d->m_mapValues = -1;
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|
|
d->m_mapLabels = -1;
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|
|
d->m_mapOrientation = Qt::Vertical;
|
|
|
}
|
|
|
|
|
|
// set new model
|
|
|
if(model)
|
|
|
{
|
|
|
m_model = model;
|
|
|
return true;
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
m_model = 0;
|
|
|
return false;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
\fn bool QPieSeries::setModelMapping(int modelValuesLine, int modelLabelsLine, Qt::Orientation orientation)
|
|
|
Sets column/row specified by \a modelValuesLine to be used as a list of pie slice values for the pie.
|
|
|
Parameter \a modelValuesLine indicates the column/row where the values for the pie slices are located in the model.
|
|
|
Parameter \a modelLabelsLine indicates the column/row where the labels for the pie slices are located in the model.
|
|
|
The \a orientation paramater specifies whether the data is in columns or in rows.
|
|
|
*/
|
|
|
void QPieSeries::setModelMapping(int modelValuesLine, int modelLabelsLine, Qt::Orientation orientation)
|
|
|
{
|
|
|
Q_D(QPieSeries);
|
|
|
|
|
|
if (m_model == 0)
|
|
|
return;
|
|
|
|
|
|
d->m_mapValues = modelValuesLine;
|
|
|
d->m_mapLabels = modelLabelsLine;
|
|
|
d->m_mapOrientation = orientation;
|
|
|
|
|
|
// connect the signals
|
|
|
if (d->m_mapOrientation == Qt::Vertical) {
|
|
|
connect(m_model, SIGNAL(dataChanged(QModelIndex,QModelIndex)), d, SLOT(modelUpdated(QModelIndex, QModelIndex)));
|
|
|
connect(m_model, SIGNAL(rowsInserted(QModelIndex, int, int)), d, SLOT(modelDataAdded(QModelIndex,int,int)));
|
|
|
connect(m_model, SIGNAL(rowsRemoved(QModelIndex, int, int)), d, SLOT(modelDataRemoved(QModelIndex,int,int)));
|
|
|
} else {
|
|
|
connect(m_model, SIGNAL(dataChanged(QModelIndex,QModelIndex)), d, SLOT(modelUpdated(QModelIndex, QModelIndex)));
|
|
|
connect(m_model, SIGNAL(columnsInserted(QModelIndex, int, int)), d, SLOT(modelDataAdded(QModelIndex,int,int)));
|
|
|
connect(m_model, SIGNAL(columnsRemoved(QModelIndex, int, int)), d, SLOT(modelDataRemoved(QModelIndex,int,int)));
|
|
|
}
|
|
|
|
|
|
// create the initial slices set
|
|
|
if (d->m_mapOrientation == Qt::Vertical) {
|
|
|
for (int i = 0; i < m_model->rowCount(); i++)
|
|
|
append(m_model->data(m_model->index(i, d->m_mapValues), Qt::DisplayRole).toDouble(), m_model->data(m_model->index(i, d->m_mapLabels), Qt::DisplayRole).toString());
|
|
|
} else {
|
|
|
for (int i = 0; i < m_model->columnCount(); i++)
|
|
|
append(m_model->data(m_model->index(d->m_mapValues, i), Qt::DisplayRole).toDouble(), m_model->data(m_model->index(d->m_mapLabels, i), Qt::DisplayRole).toString());
|
|
|
}
|
|
|
}
|
|
|
|
|
|
#include "moc_qpieseries.cpp"
|
|
|
#include "moc_qpieseriesprivate_p.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
