tablewidget.cpp Example File | Qt Charts 5.12.12

- Qt 5.12
- Qt Charts
- BarModelMapper Example
- tablewidget.cpp Example File
- Qt Charts | Commercial or GPLv3

# tablewidget.cpp Example File

barmodelmapper/tablewidget.cpp

     /****************************************************************************
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     ** Copyright (C) 2016 The Qt Company Ltd.
     ** Contact: https://www.qt.io/licensing/
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     ** This file is part of the Qt Charts module of the Qt Toolkit.
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     #include "tablewidget.h"
     #include <QtWidgets/QGridLayout>
     #include <QtWidgets/QTableView>
     #include <QtCharts/QChart>
     #include <QtCharts/QChartView>
     #include <QtCharts/QLineSeries>
     #include <QtCharts/QVXYModelMapper>
     #include <QtCharts/QBarSeries>
     #include <QtCharts/QBarSet>
     #include <QtCharts/QVBarModelMapper>
     #include <QtWidgets/QHeaderView>
     #include <QtCharts/QBarCategoryAxis>
     #include <QtCharts/QValueAxis>

     QT_CHARTS_USE_NAMESPACE

     TableWidget::TableWidget(QWidget *parent)
         : QWidget(parent)
     {
         // create simple model for storing data
         // user's table data model
         m_model = new CustomTableModel;

         // create table view and add model to it
         QTableView *tableView = new QTableView;
         tableView->setModel(m_model);
         tableView->setMinimumWidth(300);
         tableView->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
         tableView->verticalHeader()->setSectionResizeMode(QHeaderView::Stretch);
         m_model->setParent(tableView);

         QChart *chart = new QChart;
         chart->setAnimationOptions(QChart::AllAnimations);

         // series 1
         QBarSeries *series = new QBarSeries;

         int first = 3;
         int count = 5;
         QVBarModelMapper *mapper = new QVBarModelMapper(this);
         mapper->setFirstBarSetColumn(1);
         mapper->setLastBarSetColumn(4);
         mapper->setFirstRow(first);
         mapper->setRowCount(count);
         mapper->setSeries(series);
         mapper->setModel(m_model);
         chart->addSeries(series);

         // for storing color hex from the series
         QString seriesColorHex = "#000000";

         // get the color of the series and use it for showing the mapped area
         QList<QBarSet *> barsets = series->barSets();
         for (int i = 0; i < barsets.count(); i++) {
             seriesColorHex = "#" + QString::number(barsets.at(i)->brush().color().rgb(), 16).right(6).toUpper();
             m_model->addMapping(seriesColorHex, QRect(1 + i, first, 1, barsets.at(i)->count()));
         }

         QStringList categories;
         categories << "April" << "May" << "June" << "July" << "August";
         QBarCategoryAxis *axisX = new QBarCategoryAxis();
         axisX->append(categories);
         chart->addAxis(axisX, Qt::AlignBottom);
         series->attachAxis(axisX);
         QValueAxis *axisY = new QValueAxis();
         chart->addAxis(axisY, Qt::AlignLeft);
         series->attachAxis(axisY);

         QChartView *chartView = new QChartView(chart);
         chartView->setRenderHint(QPainter::Antialiasing);
         chartView->setMinimumSize(640, 480);

         // create main layout
         QGridLayout *mainLayout = new QGridLayout;
         mainLayout->addWidget(tableView, 1, 0);
         mainLayout->addWidget(chartView, 1, 1);
         mainLayout->setColumnStretch(1, 1);
         mainLayout->setColumnStretch(0, 0);
         setLayout(mainLayout);
     }