Method reloadData

CrossApp/view/CACollectionView.cpp:488–605

}

void CACollectionView::reloadData()
{
	CC_RETURN_IF(m_pCollectionViewDataSource == NULL);
    
	this->reloadViewSizeData();
    
	this->removeAllSubviews();
    
	DRect winRect = this->getBounds();
	winRect.origin = getContentOffset();
	float width = winRect.size.width;
	int y = 0;
    
	if (m_nCollectionHeaderHeight > 0 && m_pCollectionHeaderView)
	{
		m_pCollectionHeaderView->setDisplayRange(true);
		m_pCollectionHeaderView->setFrame(DRect(0, y, width, m_nCollectionHeaderHeight));
		addSubview(m_pCollectionHeaderView);
		y += m_nCollectionHeaderHeight;
	}
    
;
    int begin = (int)m_rSectionRects.size();
    m_rSectionRects.resize(m_rSectionRects.size() + m_nSections);
	for (int i = 0; i < m_nSections; i++)
	{
		unsigned int iSectionHeaderHeight = m_nSectionHeaderHeights.at(i);
		DRect sectionHeaderRect = DRect(0, y, width, iSectionHeaderHeight);
		if (iSectionHeaderHeight>0)
		{
			CAView* pSectionHeaderView = m_pCollectionViewDataSource->collectionViewSectionViewForHeaderInSection(this, sectionHeaderRect.size, i);
			if (pSectionHeaderView != NULL)
			{
				pSectionHeaderView->setDisplayRange(true);
				pSectionHeaderView->setFrame(sectionHeaderRect);
				insertSubview(pSectionHeaderView, 1);
				m_pSectionHeaderViews[i] = pSectionHeaderView;
				y += iSectionHeaderHeight;
			}
		}
        
		y += m_nVertInterval;
		unsigned int rowCount = m_nRowsInSections.at(i);
		for (int j = 0; j < rowCount; j++)
		{
			int iHeight = m_nRowHeightss.at(i).at(j);
            
			unsigned int itemCount = m_pCollectionViewDataSource->numberOfItemsInRowsInSection(this, i, j);
            
			unsigned int cellWidth = 0;
			if (itemCount>0)
			{
				cellWidth = (width - m_nHoriInterval) / itemCount - m_nHoriInterval;
			}
			for (int k = 0; k < itemCount; k++)
			{
				CAIndexPath3E indexPath = CAIndexPath3E(i, j, k);
				DRect cellRect = DRect(m_nHoriInterval + (cellWidth + m_nHoriInterval)*k, y, cellWidth, iHeight);