customtablemodel.cpp Example File

modeldata/customtablemodel.cpp
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#include "customtablemodel.h"
#include <QtCore/QVector>
#include <QtCore/QTime>
#include <QtCore/QRect>
#include <QtGui/QColor>

CustomTableModel::CustomTableModel(QObject *parent) :
    QAbstractTableModel(parent)
{
    qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime()));

    m_columnCount = 4;
    m_rowCount = 15;

    // m_data
    for (int i = 0; i < m_rowCount; i++) {
        QVector<qreal>* dataVec = new QVector<qreal>(m_columnCount);
        for (int k = 0; k < dataVec->size(); k++) {
            if (k % 2 == 0)
                dataVec->replace(k, i * 50 + qrand() % 20);
            else
                dataVec->replace(k, qrand() % 100);
        }
        m_data.append(dataVec);
    }
}

int CustomTableModel::rowCount(const QModelIndex &parent) const
{
    Q_UNUSED(parent)
    return m_data.count();
}

int CustomTableModel::columnCount(const QModelIndex &parent) const
{
    Q_UNUSED(parent)
    return m_columnCount;
}

QVariant CustomTableModel::headerData(int section, Qt::Orientation orientation, int role) const
{
    if (role != Qt::DisplayRole)
        return QVariant();

    if (orientation == Qt::Horizontal) {
        if (section % 2 == 0)
            return "x";
        else
            return "y";
    } else {
        return QString("%1").arg(section + 1);
    }
}

QVariant CustomTableModel::data(const QModelIndex &index, int role) const
{
    if (role == Qt::DisplayRole) {
        return m_data[index.row()]->at(index.column());
    } else if (role == Qt::EditRole) {
        return m_data[index.row()]->at(index.column());
    } else if (role == Qt::BackgroundRole) {
        foreach (QRect rect, m_mapping) {
            if (rect.contains(index.column(), index.row()))
                return QColor(m_mapping.key(rect));
        }
        // cell not mapped return white color
        return QColor(Qt::white);
    }
    return QVariant();
}

bool CustomTableModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
    if (index.isValid() && role == Qt::EditRole) {
        m_data[index.row()]->replace(index.column(), value.toDouble());
        emit dataChanged(index, index);
        return true;
    }
    return false;
}

Qt::ItemFlags CustomTableModel::flags(const QModelIndex &index) const
{
    return QAbstractItemModel::flags(index) | Qt::ItemIsEditable;
}

void CustomTableModel::addMapping(QString color, QRect area)
{
    m_mapping.insertMulti(color, area);
}

© 2016 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.