void UpdateHoverItem()
{
var oldItem = m_HoverItem;
var pos = this.MapFromGlobal(QCursor.Pos());
var item = this.ItemAt(pos);
// Since we map the point to scene coords, we could accidently
// focus items outside the visible viewport.
if (m_SuppressTooltips || !this.Viewport().Geometry.Contains(pos) || !this.IsVisible())
{
m_TooltipTimer.Stop();
m_HoverItem = null;
m_InfoPopup.Item = null;
}
else
{
if (item is RosterItem <T> )
{
m_HoverItem = (RosterItem <T>)item;
m_HoverItem.Update();
if (m_InfoPopup.Item != m_HoverItem)
{
if (m_InfoPopup.IsVisible())
{
m_InfoPopup.Item = m_HoverItem;
}
else
{
m_TooltipTimer.Stop();
m_InfoPopup.Item = m_HoverItem;
m_TooltipTimer.Start();
}
}
}
else
{
m_TooltipTimer.Stop();
m_HoverItem = null;
// Allow a buffer around the active item so that the tooltip
// can change items without having to be closed/re-opened.
if (m_InfoPopup.Item != null)
{
var itemRect = m_InfoPopup.Item.SceneBoundingRect();
var itemPos = this.MapFromScene(itemRect.X(), itemRect.Y());
QRectF rect = new QRectF(itemPos.X() - IconPadding,
itemPos.Y() - IconPadding,
itemRect.Width() + IconPadding + IconPadding,
itemRect.Height() + IconPadding + IconPadding);
if (!rect.Contains(pos))
{
m_InfoPopup.Item = null;
}
}
}
}
if (oldItem != null && oldItem != m_HoverItem)
{
oldItem.Update();
}
}
