const int y = (m_scrollOrientation == Qt::Vertical) ? padding : horizontalMargin;
- m_roleBounds = QRectF(horizontalMargin + padding, y, size().width() - 2 * padding - horizontalMargin, roleHeight);
+ m_roleBounds = QRectF(horizontalMargin + padding, y, size().width() - 2 * (padding + horizontalMargin), roleHeight);
update();
}