#include "customdelegate.h"

CustomDelegate::CustomDelegate(QObject *parent):
    QItemDelegate(parent)
{

}

void CustomDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    bool mergeCell = index.data(UserRole_MergeCell).toBool();

    if (mergeCell && index.column() == 0)
    {
        QModelIndex nextColumnIndex = index.siblingAtColumn(index.column() + 1);
        if (!nextColumnIndex.isValid())
        {
            QItemDelegate::paint(painter, option, index);
            return;
        }

        QRect mergedRect(option.rect.x(),
                         option.rect.y(),
                         option.rect.width() * 2,
                         option.rect.height());

        painter->save();
        painter->setClipRect(mergedRect);
        drawBackground(painter, option, index);
        drawDisplay(painter, option, mergedRect, index.data(Qt::DisplayRole).toString());

        painter->restore();
    } else {
        QItemDelegate::paint(painter, option, index);
    }
}

QSize CustomDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    return QItemDelegate::sizeHint(option, index);
}