Method paintEvent

qrenderdoc/Widgets/Extended/RDHeaderView.cpp:799–865

}

void RDHeaderView::paintEvent(QPaintEvent *e)
{
  if(!m_customSizing)
    return QHeaderView::paintEvent(e);

  if(count() == 0)
    return;

  QPainter painter(viewport());

  int start = qMax(visualIndexAt(e->rect().left()), 0);
  int end = visualIndexAt(e->rect().right());

  if(end == -1)
    end = count() - 1;

  // make sure we always paint the whole header for any merged headers
  while(start > 0 && !hasGroupTitle(start - 1))
    start--;
  while(end < m_sections.count() && !hasGroupTitle(end))
    end++;

  QRect accumRect;
  for(int i = start; i <= end; ++i)
  {
    int pos = sectionViewportPosition(i);
    int size = sectionSize(i);

    if(!hasGroupGap(i) && pos < 0)
    {
      size += pos;
      pos = 0;
    }

    // either set or accumulate this section's rect
    if(accumRect.isEmpty())
      accumRect.setRect(pos, 0, size, viewport()->height());
    else
      accumRect.setWidth(accumRect.width() + size);

    if(hasGroupTitle(i))
    {
      painter.save();

      if(accumRect.left() < m_pinnedWidth && i >= m_pinnedColumns)
        accumRect.setLeft(m_pinnedWidth);

      paintSection(&painter, accumRect, i);
      painter.restore();

      // if we have more sections to go, reset so we can accumulate the next group
      if(i < end)
        accumRect = QRect();
    }
  }

  // clear the remainder of the header if there's a gap
  if(accumRect.right() < e->rect().right())