File indexing completed on 2024-05-12 05:09:21

 /***************************************************************************
     Copyright (C) 2021 Robby Stephenson <robby@periapsis.org>
  ***************************************************************************/
 
 /***************************************************************************
  *                                                                         *
  *   This program is free software; you can redistribute it and/or         *
  *   modify it under the terms of the GNU General Public License as        *
  *   published by the Free Software Foundation; either version 2 of        *
  *   the License or (at your option) version 3 or any later version        *
  *   accepted by the membership of KDE e.V. (or its successor approved     *
  *   by the membership of KDE e.V.), which shall act as a proxy            *
  *   defined in Section 14 of version 3 of the license.                    *
  *                                                                         *
  *   This program is distributed in the hope that it will be useful,       *
  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  *   GNU General Public License for more details.                          *
  *                                                                         *
  *   You should have received a copy of the GNU General Public License     *
  *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  *                                                                         *
  ***************************************************************************/
 
 #include "barchart.h"
 #include "../tellico_debug.h"
 
 #include <KLocalizedString>
 
 #include <QBarSet>
 #include <QHorizontalBarSeries>
 #include <QHorizontalStackedBarSeries>
 #include <QBarCategoryAxis>
 #include <QValueAxis>
 #include <QCategoryAxis>
 #include <QGraphicsLayout>
 
 using namespace QtCharts;
 using Tellico::BarChart;
 
 BarChart::BarChart(const QStringList& names_, const QList<qreal>& values_) : QChart() {
   QFont f = titleFont();
   int fontSize = f.pointSize();
   if(fontSize > 0) {
     f.setPointSize(qRound(fontSize * 1.3));
   } else {
     f.setPixelSize(qRound(f.pixelSize() * 1.3));
   }
   f.setWeight(QFont::Bold);
   setTitleFont(f);
 
   // horizontal bar charts
   auto series = new QHorizontalStackedBarSeries();
   QList<qreal> dummyList;
   dummyList.reserve(names_.count());
   for(int i = 0; i < names_.count(); ++i) {
     auto barSet = new QBarSet(names_.at(i));
     // to "trick" the bar chart into different colors, each new group must be in a different value position
     // so replace the previous value with 0 and insert the next one
     if(i > 0) dummyList.replace(i-1, 0);
     dummyList << values_.at(i);
     barSet->append(dummyList);
     // add the bar set and series to the chart
     series->append(barSet);
   }
   series->setLabelsVisible(true);
   series->setLabelsFormat(QStringLiteral("(@value) "));
   series->setLabelsPosition(QAbstractBarSeries::LabelsInsideEnd);
   series->setBarWidth(0.8);
   addSeries(series);
 
   auto axisX = new QValueAxis();
   axisX->setLabelFormat(QStringLiteral("%d"));
   addAxis(axisX, Qt::AlignBottom);
   series->attachAxis(axisX);
   if(axisX->max() < 5) axisX->setMax(5);
   axisX->applyNiceNumbers();
 
   auto axisY = new QBarCategoryAxis();
   axisY->append(names_);
   addAxis(axisY, Qt::AlignLeft);
   series->attachAxis(axisY);
   axisY->setGridLineVisible(false);
 
   layout()->setContentsMargins(0, 20, 0, 20); // default is 20, 20, 20, 20
   legend()->hide();
   setBackgroundRoundness(0);
 }