HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Commit - r510:abde8123ae71

Pie pen now uses gradient start color

Tero Ahola -

r510:abde8123ae71

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r510:abde8123ae71

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src/charttheme.cpp +4 -3

             #include "charttheme_p.h"
             #include "qchart.h"
             #include "qchartaxis.h"
             #include <QTime>
             //series
             #include "qbarset.h"
             #include "qbarseries.h"
             #include "qstackedbarseries.h"
             #include "qpercentbarseries.h"
             #include "qlineseries.h"
             #include "qareaseries.h"
             #include "qscatterseries.h"
             #include "qpieseries.h"
             #include "qpieslice.h"
             #include "qsplineseries.h"
             //items
             #include "axisitem_p.h"
             #include "barpresenter_p.h"
             #include "stackedbarpresenter_p.h"
             #include "percentbarpresenter_p.h"
             #include "linechartitem_p.h"
             #include "areachartitem_p.h"
             #include "scatterchartitem_p.h"
             #include "piepresenter_p.h"
             #include "splinechartitem_p.h"
             //themes
             #include "chartthemedefault_p.h"
             #include "chartthemevanilla_p.h"
             #include "chartthemeicy_p.h"
             #include "chartthemegrayscale_p.h"
             #include "chartthemescientific_p.h"
             QTCOMMERCIALCHART_BEGIN_NAMESPACE
             ChartTheme::ChartTheme(QChart::ChartTheme id)
             {
                 m_id = id;
                 qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));
             }
             ChartTheme* ChartTheme::createTheme(QChart::ChartTheme theme)
             {
                 switch(theme) {
                     case QChart::ChartThemeVanilla:
                         return new ChartThemeVanilla();
                     case QChart::ChartThemeIcy:
                         return new ChartThemeIcy();
                     case QChart::ChartThemeGrayscale:
                         return new ChartThemeGrayscale();
                     case QChart::ChartThemeScientific:
                         return new ChartThemeScientific();
                     default:
                         return new ChartThemeDefault();
                 }
             }
             void ChartTheme::decorate(QChart* chart)
             {
                 chart->setChartBackgroundBrush(m_backgroundGradient);
             }
             //TODO helper to by removed later
             void ChartTheme::decorate(ChartItem* item, QSeries* series,int count)
             {
                 switch(series->type())
                 {
                     case QSeries::SeriesTypeLine: {
                         QLineSeries* s = static_cast<QLineSeries*>(series);
                         LineChartItem* i = static_cast<LineChartItem*>(item);
                         decorate(i,s,count);
                         break;
                     }
                     case QSeries::SeriesTypeArea: {
                                QAreaSeries* s = static_cast<QAreaSeries*>(series);
                                AreaChartItem* i = static_cast<AreaChartItem*>(item);
                                decorate(i,s,count);
                                break;
                     }
                     case QSeries::SeriesTypeBar: {
                         QBarSeries* b = static_cast<QBarSeries*>(series);
                         BarPresenter* i = static_cast<BarPresenter*>(item);
                         decorate(i,b,count);
                         break;
                     }
                     case QSeries::SeriesTypeStackedBar: {
                         QStackedBarSeries* s = static_cast<QStackedBarSeries*>(series);
                         StackedBarPresenter* i = static_cast<StackedBarPresenter*>(item);
                         decorate(i,s,count);
                         break;
                     }
                     case QSeries::SeriesTypePercentBar: {
                         QPercentBarSeries* s = static_cast<QPercentBarSeries*>(series);
                         PercentBarPresenter* i = static_cast<PercentBarPresenter*>(item);
                         decorate(i,s,count);
                         break;
                     }
                     case QSeries::SeriesTypeScatter: {
                         QScatterSeries* s = qobject_cast<QScatterSeries*>(series);
                         Q_ASSERT(s);
                         ScatterChartItem* i = static_cast<ScatterChartItem*>(item);
                         Q_ASSERT(i);
                         decorate(i, s, count);
                         break;
                     }
                     case QSeries::SeriesTypePie: {
                         QPieSeries* s = static_cast<QPieSeries*>(series);
                         PiePresenter* i = static_cast<PiePresenter*>(item);
                         decorate(i,s,count);
                         break;
                     }
                     default:
                     qDebug()<<"Wrong item to be decorated by theme";
                     break;
                 }
             }
             void ChartTheme::decorate(AreaChartItem* item, QAreaSeries* series,int count)
             {
                 QPen pen;
                 QBrush brush;
                 if(pen != series->pen()){
                    item->setPen(series->pen());
                 }else{
                     pen.setColor(m_seriesColors.at(count%m_seriesColors.size()));
                     pen.setWidthF(2);
                     item->setPen(pen);
                 }
                 if(brush != series->brush()){
                    item->setBrush(series->brush());
                 }else{
                    QBrush brush(m_seriesColors.at(count%m_seriesColors.size()));
                    item->setBrush(brush);
                 }
             }
             void ChartTheme::decorate(LineChartItem* item, QLineSeries* series,int count)
             {
                 QPen pen;
                 if(pen != series->pen()){
                     item->setLinePen(series->pen());
                     return;
                 }
                 pen.setColor(m_seriesColors.at(count%m_seriesColors.size()));
                 pen.setWidthF(2);
                 item->setLinePen(pen);
             }
             void ChartTheme::decorate(BarPresenter* item, QBarSeries* series,int count)
             {
                 QList<QBarSet*> sets = series->barSets();
                 for (int i=0; i<sets.count(); i++) {
                     qreal pos = (qreal) i / (qreal) sets.count();
                     QColor c = colorAt(m_seriesGradients.at(count % m_seriesGradients.size()), pos);
                     sets.at(i)->setBrush(QBrush(c));
                 }
             }
             void ChartTheme::decorate(StackedBarPresenter* item, QStackedBarSeries* series,int count)
             {
                 QList<QBarSet*> sets = series->barSets();
                 for (int i=0; i<sets.count(); i++) {
                     qreal pos = (qreal) i / (qreal) sets.count();
                     QColor c = colorAt(m_seriesGradients.at(count % m_seriesGradients.size()), pos);
                     sets.at(i)->setBrush(QBrush(c));
                 }
             }
             void ChartTheme::decorate(PercentBarPresenter* item, QPercentBarSeries* series,int count)
             {
                 QList<QBarSet*> sets = series->barSets();
                 for (int i=0; i<sets.count(); i++) {
                     qreal pos = (qreal) i / (qreal) sets.count();
                     QColor c = colorAt(m_seriesGradients.at(count % m_seriesGradients.size()), pos);
                     sets.at(i)->setBrush(QBrush(c));
                 }
             }
             void ChartTheme::decorate(ScatterChartItem* item, QScatterSeries* series, int count)
             {
                 Q_ASSERT(item);
                 Q_ASSERT(series);
                 QColor color = m_seriesColors.at(count % m_seriesColors.size());
                 // TODO: define alpha in the theme? or in the series?
                 //color.setAlpha(120);
                 QBrush brush(color, Qt::SolidPattern);
                 item->setBrush(Qt::blue);
                 QPen pen(brush, 3);
                 pen.setColor(color);
                 item->setPen(pen);
             }
             void ChartTheme::decorate(PiePresenter* item, QPieSeries* series, int count)
             {
                 // Get color for a slice from a gradient linearly, beginning from the start of the gradient
                 for (int i(0); i < series->slices().count(); i++) {
                     qreal pos = (qreal) i / (qreal) series->count();
-                    QColor c = colorAt(m_seriesGradients.at(count % m_seriesGradients.size()), pos);
+                    QColor penColor = colorAt(m_seriesGradients.at(count % m_seriesGradients.size()), 0.1);
-                    series->slices().at(i)->setSlicePen(c);
+                    series->slices().at(i)->setSlicePen(penColor);
-                    series->slices().at(i)->setSliceBrush(c);
+                    QColor brushColor = colorAt(m_seriesGradients.at(count % m_seriesGradients.size()), pos);
+                    series->slices().at(i)->setSliceBrush(brushColor);
                 }
             }
             void ChartTheme::decorate(QChartAxis* axis, AxisItem* item)
             {
                 //TODO: dummy defults for now
                 axis->setLabelsBrush(Qt::black);
                 axis->setLabelsPen(Qt::NoPen);
                 axis->setShadesPen(Qt::NoPen);
                 axis->setShadesOpacity(0.5);
             }
             void ChartTheme::decorate(SplineChartItem* item, QSplineSeries* series, int count)
             {
                 Q_ASSERT(item);
                 Q_ASSERT(series);
                 QPen pen;
                 if(pen != series->pen()){
                     item->setLinePen(series->pen());
                 }else{
                     pen.setColor(m_seriesColors.at(count%m_seriesColors.size()));
                     pen.setWidthF(series->pen().widthF());
                     item->setLinePen(series->pen());
                 }
             //    QColor color = m_seriesColors.at(count % m_seriesColors.size());
                 // TODO: define alpha in the theme? or in the series?
                 //color.setAlpha(120);
             //    QBrush brush(color, Qt::SolidPattern);
             //    presenter->m_markerBrush = brush;
             //    QPen pen(brush, 3);
             //    pen.setColor(color);
             //    presenter->m_markerPen = pen;
             }
             void ChartTheme::generateSeriesGradients()
             {
                 // Generate gradients in HSV color space
                 foreach (QColor color, m_seriesColors) {
                     QLinearGradient g;
                     qreal h = color.hsvHueF();
                     qreal s = color.hsvSaturationF();
                     // TODO: tune the algorithm to give nice results with most base colors defined in
                     // most themes. The rest of the gradients we can define manually in theme specific
                     // implementation.
                     QColor start = color;
                     start.setHsvF(h, 0.05, 0.95);
                     g.setColorAt(0.0, start);
                     g.setColorAt(0.5, color);
                     QColor end = color;
                     end.setHsvF(h, s, 0.25);
                     g.setColorAt(1.0, end);
                     m_seriesGradients << g;
                 }
             }
             QColor ChartTheme::colorAt(const QColor &start, const QColor &end, qreal pos)
             {
                 Q_ASSERT(pos >=0.0 && pos <= 1.0);
                 qreal r = start.redF() + ((end.redF() - start.redF()) * pos);
                 qreal g = start.greenF() + ((end.greenF() - start.greenF()) * pos);
                 qreal b = start.blueF() + ((end.blueF() - start.blueF()) * pos);
                 QColor c;
                 c.setRgbF(r, g, b);
                 return c;
             }
             QColor ChartTheme::colorAt(const QGradient &gradient, qreal pos)
             {
                 Q_ASSERT(pos >=0 && pos <= 1.0);
                 // another possibility:
                 // http://stackoverflow.com/questions/3306786/get-intermediate-color-from-a-gradient
                 QGradientStops stops = gradient.stops();
                 int count = stops.count();
                 // find previous stop relative to position
                 QGradientStop prev = stops.first();
                 for (int i=0; i<count; i++) {
                     QGradientStop stop = stops.at(i);
                     if (pos > stop.first)
                         prev = stop;
                     // given position is actually a stop position?
                     if (pos == stop.first) {
                         //qDebug() << "stop color" << pos;
                         return stop.second;
                     }
                 }
                 // find next stop relative to position
                 QGradientStop next = stops.last();
                 for (int i=count-1; i>=0; i--) {
                     QGradientStop stop = stops.at(i);
                     if (pos < stop.first)
                         next = stop;
                 }
                 //qDebug() << "prev" << prev.first << "pos" << pos << "next" << next.first;
                 qreal range = next.first - prev.first;
                 qreal posDelta = pos - prev.first;
                 qreal relativePos = posDelta / range;
                 //qDebug() << "range" << range << "posDelta" << posDelta << "relativePos" << relativePos;
                 return colorAt(prev.second, next.second, relativePos);
             }
             QTCOMMERCIALCHART_END_NAMESPACE

test/chartwidgettest/mainwidget.cpp +1 -1

             #include "mainwidget.h"
             #include "dataseriedialog.h"
             #include <qpieseries.h>
             #include <qscatterseries.h>
             #include <qlineseries.h>
             #include <qareaseries.h>
             #include <qsplineseries.h>
             #include <qbarset.h>
             #include <qbarseries.h>
             #include <qstackedbarseries.h>
             #include <qpercentbarseries.h>
             #include <QPushButton>
             #include <QComboBox>
             #include <QSpinBox>
             #include <QCheckBox>
             #include <QGridLayout>
             #include <QHBoxLayout>
             #include <QLabel>
             #include <QSpacerItem>
             #include <QMessageBox>
             #include <cmath>
             #include <QDebug>
             #include <QStandardItemModel>
             QTCOMMERCIALCHART_USE_NAMESPACE
             MainWidget::MainWidget(QWidget *parent) :
                 QWidget(parent),
                 m_addSerieDialog(0),
                 m_chartView(0)
             {
                 m_chartView = new QChartView(this);
                 m_chartView->setRubberBandPolicy(QChartView::HorizonalRubberBand);
                 // Grid layout for the controls for configuring the chart widget
                 QGridLayout *grid = new QGridLayout();
                 QPushButton *addSeriesButton = new QPushButton("Add series");
                 connect(addSeriesButton, SIGNAL(clicked()), this, SLOT(addSeries()));
                 grid->addWidget(addSeriesButton, 0, 1);
                 initBackroundCombo(grid);
                 initScaleControls(grid);
                 initThemeCombo(grid);
                 initCheckboxes(grid);
                 // add row with empty label to make all the other rows static
                 grid->addWidget(new QLabel(""), grid->rowCount(), 0);
                 grid->setRowStretch(grid->rowCount() - 1, 1);
                 // Another grid layout as a main layout
                 QGridLayout *mainLayout = new QGridLayout();
                 mainLayout->addLayout(grid, 0, 0);
                 // Add layouts and the chart widget to the main layout
                 mainLayout->addWidget(m_chartView, 0, 1, 3, 1);
                 setLayout(mainLayout);
             }
             // Combo box for selecting the chart's background
             void MainWidget::initBackroundCombo(QGridLayout *grid)
             {
                 QComboBox *backgroundCombo = new QComboBox(this);
                 backgroundCombo->addItem("Color");
                 backgroundCombo->addItem("Gradient");
                 backgroundCombo->addItem("Image");
                 connect(backgroundCombo, SIGNAL(currentIndexChanged(int)),
                         this, SLOT(backgroundChanged(int)));
                 grid->addWidget(new QLabel("Background:"), grid->rowCount(), 0);
                 grid->addWidget(backgroundCombo, grid->rowCount() - 1, 1);
             }
             // Scale related controls (auto-scale vs. manual min-max values)
             void MainWidget::initScaleControls(QGridLayout *grid)
             {
                 m_autoScaleCheck = new QCheckBox("Automatic scaling");
                 connect(m_autoScaleCheck, SIGNAL(stateChanged(int)), this, SLOT(autoScaleChanged(int)));
                 // Allow setting also non-sense values (like -2147483648 and 2147483647)
                 m_xMinSpin = new QSpinBox();
                 m_xMinSpin->setMinimum(INT_MIN);
                 m_xMinSpin->setMaximum(INT_MAX);
                 m_xMinSpin->setValue(0);
                 connect(m_xMinSpin, SIGNAL(valueChanged(int)), this, SLOT(xMinChanged(int)));
                 m_xMaxSpin = new QSpinBox();
                 m_xMaxSpin->setMinimum(INT_MIN);
                 m_xMaxSpin->setMaximum(INT_MAX);
                 m_xMaxSpin->setValue(10);
                 connect(m_xMaxSpin, SIGNAL(valueChanged(int)), this, SLOT(xMaxChanged(int)));
                 m_yMinSpin = new QSpinBox();
                 m_yMinSpin->setMinimum(INT_MIN);
                 m_yMinSpin->setMaximum(INT_MAX);
                 m_yMinSpin->setValue(0);
                 connect(m_yMinSpin, SIGNAL(valueChanged(int)), this, SLOT(yMinChanged(int)));
                 m_yMaxSpin = new QSpinBox();
                 m_yMaxSpin->setMinimum(INT_MIN);
                 m_yMaxSpin->setMaximum(INT_MAX);
                 m_yMaxSpin->setValue(10);
                 connect(m_yMaxSpin, SIGNAL(valueChanged(int)), this, SLOT(yMaxChanged(int)));
                 grid->addWidget(m_autoScaleCheck, grid->rowCount(), 0);
                 grid->addWidget(new QLabel("x min:"), grid->rowCount(), 0);
                 grid->addWidget(m_xMinSpin, grid->rowCount() - 1, 1);
                 grid->addWidget(new QLabel("x max:"), grid->rowCount(), 0);
                 grid->addWidget(m_xMaxSpin, grid->rowCount() - 1, 1);
                 grid->addWidget(new QLabel("y min:"), grid->rowCount(), 0);
                 grid->addWidget(m_yMinSpin, grid->rowCount() - 1, 1);
                 grid->addWidget(new QLabel("y max:"), grid->rowCount(), 0);
                 grid->addWidget(m_yMaxSpin, grid->rowCount() - 1, 1);
                 m_autoScaleCheck->setChecked(true);
             }
             // Combo box for selecting theme
             void MainWidget::initThemeCombo(QGridLayout *grid)
             {
                 QComboBox *chartTheme = new QComboBox();
                 chartTheme->addItem("Default");
                 chartTheme->addItem("Vanilla");
                 chartTheme->addItem("Icy");
                 chartTheme->addItem("Grayscale");
                 chartTheme->addItem("Scientific");
                 chartTheme->addItem("Unnamed1");
                 connect(chartTheme, SIGNAL(currentIndexChanged(int)),
                         this, SLOT(changeChartTheme(int)));
                 grid->addWidget(new QLabel("Chart theme:"), 8, 0);
                 grid->addWidget(chartTheme, 8, 1);
             }
             // Different check boxes for customizing chart
             void MainWidget::initCheckboxes(QGridLayout *grid)
             {
                 // TODO: setZoomEnabled slot has been removed from QChartView -> Re-implement zoom on/off
                 QCheckBox *zoomCheckBox = new QCheckBox("Drag'n drop Zoom");
                 connect(zoomCheckBox, SIGNAL(toggled(bool)), m_chartView, SLOT(setZoomEnabled(bool)));
                 zoomCheckBox->setChecked(true);
                 grid->addWidget(zoomCheckBox, grid->rowCount(), 0);
                 QCheckBox *aliasCheckBox = new QCheckBox("Anti-alias");
                 connect(aliasCheckBox, SIGNAL(toggled(bool)), this, SLOT(antiAliasToggled(bool)));
                 aliasCheckBox->setChecked(false);
                 grid->addWidget(aliasCheckBox, grid->rowCount(), 0);
             }
             void MainWidget::antiAliasToggled(bool enabled)
             {
                 m_chartView->setRenderHint(QPainter::Antialiasing, enabled);
             }
             void MainWidget::addSeries()
             {
                 if (!m_addSerieDialog) {
                     m_addSerieDialog = new DataSerieDialog(this);
                     connect(m_addSerieDialog, SIGNAL(accepted(QString, int, int, QString, bool)),
                             this, SLOT(addSeries(QString, int, int, QString, bool)));
                 }
                 m_addSerieDialog->exec();
             }
             QList<RealList> MainWidget::generateTestData(int columnCount, int rowCount, QString dataCharacteristics)
             {
                 // TODO: dataCharacteristics
                 QList<RealList> testData;
                 for (int j(0); j < columnCount; j++) {
                     QList <qreal> newColumn;
                     for (int i(0); i < rowCount; i++) {
                         if (dataCharacteristics == "Sin") {
                             newColumn.append(abs(sin(3.14159265358979 / 50 * i) * 100));
                         } else if (dataCharacteristics == "Sin + random") {
                             newColumn.append(abs(sin(3.14159265358979 / 50 * i) * 100) + (rand() % 5));
                         } else if (dataCharacteristics == "Random") {
-                            newColumn.append(rand() % 5);
+                            newColumn.append(rand() % 10 + (qreal) rand() / (qreal) RAND_MAX);
                         } else if (dataCharacteristics == "Linear") {
                             //newColumn.append(i * (j + 1.0));
                             // TODO: temporary hack to make pie work; prevent zero values:
                             newColumn.append(i * (j + 1.0) + 0.1);
                         } else { // "constant"
                             newColumn.append((j + 1.0));
                         }
                     }
                     testData.append(newColumn);
                 }
                 return testData;
             }
             QStringList MainWidget::generateLabels(int count)
             {
                 QStringList result;
                 for (int i(0); i < count; i++)
                     result.append("label" + QString::number(i));
                 return result;
             }
             void MainWidget::addSeries(QString seriesName, int columnCount, int rowCount, QString dataCharacteristics, bool labelsEnabled)
             {
                 qDebug() << "addSeries: " << seriesName
                          << " columnCount: " << columnCount
                          << " rowCount: " << rowCount
                          << " dataCharacteristics: " << dataCharacteristics
                          << " labels enabled: " << labelsEnabled;
                 m_defaultSeriesName = seriesName;
                 QList<RealList> data = generateTestData(columnCount, rowCount, dataCharacteristics);
                 // Line series and scatter series use similar data
                 if (seriesName == "Line") {
                     for (int j(0); j < data.count(); j ++) {
                         QList<qreal> column = data.at(j);
                         QLineSeries *series = new QLineSeries();
                         for (int i(0); i < column.count(); i++) {
                             series->add(i, column.at(i));
                         }
                         m_chartView->addSeries(series);
                         setCurrentSeries(series);
                     }
                 } if (seriesName == "Area") {
                     // TODO: lower series for the area?
                     for (int j(0); j < data.count(); j ++) {
                         QList<qreal> column = data.at(j);
                         QLineSeries *lineSeries = new QLineSeries();
                         for (int i(0); i < column.count(); i++) {
                             lineSeries->add(i, column.at(i));
                         }
                         QAreaSeries *areaSeries = new QAreaSeries(lineSeries);
                         m_chartView->addSeries(areaSeries);
                         setCurrentSeries(areaSeries);
                     }
                 } else if (seriesName == "Scatter") {
                     for (int j(0); j < data.count(); j++) {
                         QList<qreal> column = data.at(j);
                         QScatterSeries *series = new QScatterSeries();
                         for (int i(0); i < column.count(); i++) {
                             (*series) << QPointF(i, column.at(i));
                         }
                         m_chartView->addSeries(series);
                         setCurrentSeries(series);
                     }
                 } else if (seriesName == "Pie") {
                     QStringList labels = generateLabels(rowCount);
                     for (int j(0); j < data.count(); j++) {
                         QPieSeries *series = new QPieSeries();
                         QList<qreal> column = data.at(j);
                         for (int i(0); i < column.count(); i++) {
                             series->add(column.at(i), labels.at(i));
                         }
                         m_chartView->addSeries(series);
                         setCurrentSeries(series);
                     }
                 } else if (seriesName == "Bar"
                            || seriesName == "Stacked bar"
                            || seriesName == "Percent bar") {
                     QStringList category;
                     QStringList labels = generateLabels(rowCount);
                     foreach(QString label, labels)
                         category << label;
                     QBarSeries* series = 0;
                     if (seriesName == "Bar")
                         series = new QBarSeries(category, this);
                     else if (seriesName == "Stacked bar")
                         series = new QStackedBarSeries(category, this);
                     else
                         series = new QPercentBarSeries(category, this);
                     for (int j(0); j < data.count(); j++) {
                         QList<qreal> column = data.at(j);
                         QBarSet *set = new QBarSet("set" + QString::number(j));
                         for (int i(0); i < column.count(); i++) {
                             *set << column.at(i);
                         }
                         series->addBarSet(set);
                     }
                     // TODO: new implementation of setFloatingValuesEnabled with signals
                     //series->setFloatingValuesEnabled(true);
                     series->setToolTipEnabled(true);
                     series->setSeparatorsVisible(false);
                     m_chartView->addSeries(series);
                     setCurrentSeries(series);
                 } else if (seriesName == "Spline") {
                     for (int j(0); j < data.count(); j ++) {
                         QList<qreal> column = data.at(j);
                         QSplineSeries *series = new QSplineSeries();
                         for (int i(0); i < column.count(); i++) {
                             series->add(i, column.at(i));
                         }
                         m_chartView->addSeries(series);
                         setCurrentSeries(series);
                     }
                     // TODO: area
                 }
             }
             void MainWidget::setCurrentSeries(QSeries *series)
             {
                 if (series) {
                     m_currentSeries = series;
                     switch (m_currentSeries->type()) {
                     case QSeries::SeriesTypeLine:
                         break;
                     case QSeries::SeriesTypeScatter:
                         break;
                     case QSeries::SeriesTypePie:
                         break;
                     case QSeries::SeriesTypeBar:
                         qDebug() << "setCurrentSeries (bar)";
                         break;
                     case QSeries::SeriesTypeStackedBar:
                         qDebug() << "setCurrentSeries (Stackedbar)";
                         break;
                     case QSeries::SeriesTypePercentBar:
                         qDebug() << "setCurrentSeries (Percentbar)";
                         break;
                     case QSeries::SeriesTypeSpline:
                         break;
                     default:
                         Q_ASSERT(false);
                         break;
                     }
                 }
             }
             void MainWidget::backgroundChanged(int itemIndex)
             {
                 qDebug() << "backgroundChanged: " << itemIndex;
             }
             void MainWidget::autoScaleChanged(int value)
             {
                 if (value) {
                     // TODO: enable auto scaling
                 } else {
                     // TODO: set scaling manually (and disable auto scaling)
                 }
                 m_xMinSpin->setEnabled(!value);
                 m_xMaxSpin->setEnabled(!value);
                 m_yMinSpin->setEnabled(!value);
                 m_yMaxSpin->setEnabled(!value);
             }
             void MainWidget::xMinChanged(int value)
             {
                 qDebug() << "xMinChanged: " << value;
             }
             void MainWidget::xMaxChanged(int value)
             {
                 qDebug() << "xMaxChanged: " << value;
             }
             void MainWidget::yMinChanged(int value)
             {
                 qDebug() << "yMinChanged: " << value;
             }
             void MainWidget::yMaxChanged(int value)
             {
                 qDebug() << "yMaxChanged: " << value;
             }
             void MainWidget::changeChartTheme(int themeIndex)
             {
                 qDebug() << "changeChartTheme: " << themeIndex;
                 m_chartView->setChartTheme((QChart::ChartTheme) themeIndex);
                 //TODO: remove this hack. This is just to make it so that theme change is seen immediately.
                 QSize s = size();
                 s.setWidth(s.width()+1);
                 resize(s);
             }

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