CXTPTaskPanelGroupItem* CXTPTaskPanelGroup::HitTest(CPoint pt, CRect* lpRect) const
{
if (!IsExpanded())
return NULL;
int nOffset = m_pPanel->GetScrollOffset() - m_nCaptionHeight - m_rcGroupCurrent.top + GetScrollOffsetPos();
pt.y += nOffset;
for (int i = 0; i < GetItemCount(); i++)
{
CXTPTaskPanelGroupItem* pItem = GetAt(i);
CRect rcItem = pItem->GetItemRect();
if (rcItem.PtInRect(pt) && pItem->IsVisible())
{
if (lpRect)
{
rcItem.OffsetRect(0, -nOffset);
*lpRect = rcItem;
}
return pItem;
}
}
return NULL;
}
BOOL CXTPTaskPanelGroup::IsScrollButtonEnabled(BOOL bScrollButtonUp) const
{
CXTPTaskPanelGroupItem* pLastVisibleItem = (CXTPTaskPanelGroupItem*)m_pItems->GetLastVisibleItem();
if (pLastVisibleItem == NULL)
return FALSE;
if (bScrollButtonUp)
return m_nScrollOffset != 0;
CRect rcItem(pLastVisibleItem->GetItemRect());
return rcItem.bottom - GetScrollOffsetPos() > m_rcGroupTarget.Height() - m_nCaptionHeight;
}
void CXTPTaskPanelGroup::EnsureVisible(CXTPTaskPanelGroupItem* pItem, BOOL bUpdateScrollButtons /*= TRUE*/)
{
if (m_pPanel->IsExplorerBehaviour() || GetItemCount() == 0 || !IsExpanded())
return;
if (!pItem || pItem->GetItemGroup() != this || !pItem->IsVisible())
return;
int nIndex = pItem->GetIndex();
if (m_nScrollOffset > nIndex)
{
SetOffsetItem(nIndex, bUpdateScrollButtons);
return;
}
CRect rcItem(pItem->GetItemRect());
if (rcItem.bottom - GetScrollOffsetPos() > m_nExpandedClientHeight)
{
int nTopMargin = GetPaintManager()->GetGroupInnerMargins(this).top;
if (rcItem.top - GetScrollOffsetPos() <= nTopMargin)
return;
int nScrollOffset = m_nScrollOffset + 1;
for (; nScrollOffset <= nIndex; nScrollOffset++)
{
CXTPTaskPanelGroupItem* pItemScroll = GetAt(nScrollOffset);
if (!pItemScroll || !pItemScroll->IsVisible())
continue;
int nScrollOffsetPos = pItemScroll->GetItemRect().top - nTopMargin;
if (rcItem.bottom - nScrollOffsetPos <= m_nExpandedClientHeight)
break;
if (rcItem.top - nScrollOffsetPos <= nTopMargin)
break;
}
SetOffsetItem(nScrollOffset, bUpdateScrollButtons);
}
}