Method paintEvent

qrenderdoc/Widgets/Extended/RDTableView.cpp:238–324

}

void RDTableView::paintEvent(QPaintEvent *e)
{
  const int gridWidth = showGrid() ? 1 : 0;
  QStyleOptionViewItem opt = viewOptions();

  QPainter painter(viewport());

  if(model()->rowCount() == 0 || model()->columnCount() == 0)
    return;

  int firstRow = qMax(verticalHeader()->visualIndexAt(0), 0);
  int lastRow = verticalHeader()->visualIndexAt(viewport()->height());
  if(lastRow < 0)
  {
    // if lastRow is negative, display as many will fit. This is a reasonable upper bound without
    // displaying all rows which could be massive
    lastRow = firstRow + (viewport()->height() / qMax(1, rowHeight(firstRow))) + 1;
  }
  lastRow = qMin(lastRow, verticalHeader()->count() - 1);

  int firstCol = qMax(horizontalHeader()->visualIndexAt(horizontalHeader()->pinnedWidth() + 1), 0);
  int lastCol = horizontalHeader()->visualIndexAt(viewport()->width());
  if(lastCol < 0)
    lastCol = horizontalHeader()->count() - 1;
  lastCol = qMin(lastCol, horizontalHeader()->count() - 1);

  firstCol = qMax(m_pinnedColumns, firstCol);

  for(int row = firstRow; row <= lastRow; row++)
  {
    for(int col = firstCol; col <= lastCol; col++)
    {
      const QModelIndex index = model()->index(row, col);
      if(index.isValid())
        paintCell(&painter, index, opt);
    }
    for(int col = 0; col < m_pinnedColumns; col++)
    {
      const QModelIndex index = model()->index(row, col);
      if(index.isValid())
        paintCell(&painter, index, opt);
    }
  }

  if(gridWidth)
  {
    QPen prevPen = painter.pen();
    QBrush prevBrush = painter.brush();

    QColor gridCol(QRgb(style()->styleHint(QStyle::SH_Table_GridLineColor, &opt, this)));

    painter.setPen(QPen(gridCol, 0, gridStyle()));
    painter.setBrush(QBrush(gridCol));

    // draw bottom line of each row
    for(int row = firstRow; row <= lastRow; row++)
    {
      int y = rowViewportPosition(row) + rowHeight(row) - gridWidth;