|
|
/****************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2013 Digia Plc
|
|
|
** All rights reserved.
|
|
|
** For any questions to Digia, please use contact form at http://qt.digia.com
|
|
|
**
|
|
|
** This file is part of the Qt Commercial Charts Add-on.
|
|
|
**
|
|
|
** $QT_BEGIN_LICENSE$
|
|
|
** Licensees holding valid Qt Commercial licenses may use this file in
|
|
|
** accordance with the Qt Commercial License Agreement provided with the
|
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
|
** a written agreement between you and Digia.
|
|
|
**
|
|
|
** If you have questions regarding the use of this file, please use
|
|
|
** contact form at http://qt.digia.com
|
|
|
** $QT_END_LICENSE$
|
|
|
**
|
|
|
****************************************************************************/
|
|
|
#include "donutbreakdownchart.h"
|
|
|
#include "mainslice.h"
|
|
|
#include <QPieSlice>
|
|
|
#include <QPieLegendMarker>
|
|
|
|
|
|
QTCOMMERCIALCHART_USE_NAMESPACE
|
|
|
|
|
|
//![1]
|
|
|
DonutBreakdownChart::DonutBreakdownChart(QGraphicsItem *parent, Qt::WindowFlags wFlags)
|
|
|
: QChart(parent, wFlags)
|
|
|
{
|
|
|
// create the series for main center pie
|
|
|
m_mainSeries = new QPieSeries();
|
|
|
m_mainSeries->setPieSize(0.7);
|
|
|
QChart::addSeries(m_mainSeries);
|
|
|
}
|
|
|
//![1]
|
|
|
|
|
|
//![2]
|
|
|
void DonutBreakdownChart::addBreakdownSeries(QPieSeries *breakdownSeries, QColor color)
|
|
|
{
|
|
|
QFont font("Arial", 8);
|
|
|
|
|
|
// add breakdown series as a slice to center pie
|
|
|
MainSlice *mainSlice = new MainSlice(breakdownSeries);
|
|
|
mainSlice->setName(breakdownSeries->name());
|
|
|
mainSlice->setValue(breakdownSeries->sum());
|
|
|
m_mainSeries->append(mainSlice);
|
|
|
|
|
|
// customize the slice
|
|
|
mainSlice->setBrush(color);
|
|
|
mainSlice->setLabelVisible();
|
|
|
mainSlice->setLabelColor(Qt::white);
|
|
|
mainSlice->setLabelPosition(QPieSlice::LabelInsideHorizontal);
|
|
|
mainSlice->setLabelFont(font);
|
|
|
|
|
|
// position and customize the breakdown series
|
|
|
breakdownSeries->setPieSize(0.8);
|
|
|
breakdownSeries->setHoleSize(0.7);
|
|
|
breakdownSeries->setLabelsVisible();
|
|
|
foreach (QPieSlice *slice, breakdownSeries->slices()) {
|
|
|
color = color.lighter(115);
|
|
|
slice->setBrush(color);
|
|
|
slice->setLabelFont(font);
|
|
|
}
|
|
|
|
|
|
// add the series to the chart
|
|
|
QChart::addSeries(breakdownSeries);
|
|
|
|
|
|
// recalculate breakdown donut segments
|
|
|
recalculateAngles();
|
|
|
|
|
|
// update customize legend markers
|
|
|
updateLegendMarkers();
|
|
|
}
|
|
|
//![2]
|
|
|
|
|
|
//![3]
|
|
|
void DonutBreakdownChart::recalculateAngles()
|
|
|
{
|
|
|
qreal angle = 0;
|
|
|
foreach (QPieSlice *slice, m_mainSeries->slices()) {
|
|
|
QPieSeries *breakdownSeries = qobject_cast<MainSlice *>(slice)->breakdownSeries();
|
|
|
breakdownSeries->setPieStartAngle(angle);
|
|
|
angle += slice->percentage() * 360.0; // full pie is 360.0
|
|
|
breakdownSeries->setPieEndAngle(angle);
|
|
|
}
|
|
|
}
|
|
|
//![3]
|
|
|
|
|
|
//![4]
|
|
|
void DonutBreakdownChart::updateLegendMarkers()
|
|
|
{
|
|
|
// go through all markers
|
|
|
foreach (QAbstractSeries *series, QChart::series()) {
|
|
|
foreach (QLegendMarker *marker, legend()->markers(series)) {
|
|
|
QPieLegendMarker *pieMarker = qobject_cast<QPieLegendMarker *>(marker);
|
|
|
if (series == m_mainSeries) {
|
|
|
// hide markers from main series
|
|
|
pieMarker->setVisible(false);
|
|
|
} else {
|
|
|
// modify markers from breakdown series
|
|
|
pieMarker->setLabel(QString("%1 %2%")
|
|
|
.arg(pieMarker->slice()->label())
|
|
|
.arg(pieMarker->slice()->percentage() * 100, 0, 'f', 2));
|
|
|
pieMarker->setFont(QFont("Arial", 8));
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
//![4]
|
|
|
|
