Method scrollViewDidScroll

extensions/GUI/src/GUI/ScrollView/TableView.cpp:471–590

}

void TableView::scrollViewDidScroll(ScrollView* /*view*/)
{
    if (!_dataSource)
        return;
    ssize_t countOfItems = _dataSource->numberOfCellsInTableView(this);
    if (0 == countOfItems)
    {
        return;
    }

    if (_isUsedCellsDirty)
    {
        _isUsedCellsDirty = false;
        std::sort(_cellsUsed.begin(), _cellsUsed.end(),
                  [](TableViewCell* a, TableViewCell* b) -> bool { return a->getIdx() < b->getIdx(); });
    }

    ssize_t startIdx = 0, endIdx = 0, idx = 0, maxIdx = 0;
    Vec2 offset = this->getContentOffset() * -1;
    maxIdx      = MAX(countOfItems - 1, 0);

    if (_vordering == VerticalFillOrder::TOP_DOWN)
    {
        offset.y = offset.y + _viewSize.height / this->getContainer()->getScaleY();
    }
    startIdx = this->_indexFromOffset(offset);
    if (startIdx == AX_INVALID_INDEX)
    {
        startIdx = countOfItems - 1;
    }

    if (_vordering == VerticalFillOrder::TOP_DOWN)
    {
        offset.y -= _viewSize.height / this->getContainer()->getScaleY();
    }
    else
    {
        offset.y += _viewSize.height / this->getContainer()->getScaleY();
    }
    offset.x += _viewSize.width / this->getContainer()->getScaleX();

    endIdx = this->_indexFromOffset(offset);
    if (endIdx == AX_INVALID_INDEX)
    {
        endIdx = countOfItems - 1;
    }

#if 0  // For Testing.
    Object* pObj;
    int i = 0;
    CCARRAY_FOREACH(_cellsUsed, pObj)
    {
        TableViewCell* pCell = static_cast<TableViewCell*>(pObj);
        AXLOGD("cells Used index {}, value = {}", i, pCell->getIdx());
        i++;
    }
    AXLOGD("---------------------------------------");
    i = 0;