Method MainWindow

tests/RootIndex/mainwindow.cpp:25–118

#define USE_ROOTINDEX 1

MainWindow::MainWindow(QWidget *parent)
    : QWidget(parent)
{
    setupUi(this);

    auto *chartLayout = new QHBoxLayout(chartFrame);
    m_chart = new Chart();
    chartLayout->addWidget(m_chart);

#if USE_ROOTINDEX
    m_model.insertRows(0, 2, QModelIndex());
    m_model.insertColumns(0, 1, QModelIndex());
    QModelIndex idx1 = m_model.index(0, 0, QModelIndex());
    QModelIndex idx2 = m_model.index(1, 0, QModelIndex());

    m_model.setData(idx1, 3.14);
    m_model.setData(idx2, 2 * 3.14);

    m_model.insertRows(0, 5, idx1);
    m_model.insertColumns(0, 5, idx1);

    for (int i = 0; i < 5; ++i) {
        for (int j = 0; j < 5; ++j) {
            m_model.setData(m_model.index(i, j, idx1), ( qreal )i * j);
        }
    }

    m_model.insertRows(0, 2, idx2);
    m_model.insertColumns(0, 2, idx2);

    for (int i = 0; i < 2; ++i) {
        for (int j = 0; j < 2; ++j) {
            m_model.setData(m_model.index(i, j, idx2), 10. * (i + 1.) / (j + 1.));
        }
    }
#else
    QModelIndex idx1 = QModelIndex();
    m_model.insertRows(0, 5, idx1);
    m_model.insertColumns(0, 5, idx1);

    for (int i = 0; i < 5; ++i) {
        for (int j = 0; j < 5; ++j) {
            m_model.setData(m_model.index(i, j, idx1), ( qreal )i * j);
        }
    }
    QModelIndex idx2 = idx1;

    m_model2.insertRows(0, 2, idx2);
    m_model2.insertColumns(0, 2, idx2);

    for (int i = 0; i < 2; ++i) {
        for (int j = 0; j < 2; ++j) {
            m_model2.setData(m_model2.index(i, j, idx2), 10. * (i + 1.) / (j + 1.));
        }
    }

#endif