void PropertyTree::OnPaint()
{
CPaintDC dc(this);
ClearVisibleList();
// get client rect
CRect rc;
GetClientRect( rc );
// draw control background
CMemDC memdc( &dc );
memdc.FillSolidRect( rc, Globals::Preferences->GetBtnFaceColor() );
PropertyTreeItem* pItem;
LONG nTotal = 0;
ASSERT(GetRootItem()!=NULL);
// create clip region
HRGN hRgn = CreateRectRgn( rc.left, rc.top, rc.right, rc.bottom );
SelectClipRgn( memdc.m_hDC, hRgn );
// build a list of visible items prior to drawing. if
// we decide to later implement trees with more than
// one level, we will need a recursive function call
// to do this.
pItem = GetRootItem()->GetChild();
while ( pItem )
{
m_pVisibleList.push_back( pItem );
if ( pItem->IsExpanded() && pItem->GetChild() )
{
PropertyTreeItem* pNext = pItem->GetChild();
while ( pNext )
{
m_pVisibleList.push_back( pNext );
pNext = pNext->GetNext();
}
}
pItem = pItem->GetNext();
}
// determine if the scrollbar is visible
CheckScrollVisible();
// actually draw the items
for ( size_t i = 0; i < m_pVisibleList.size(); i++ )
{
LONG nHeight = m_pVisibleList.at( i )->DrawItem(&memdc, rc, 0, nTotal);
nTotal += nHeight;
}
// remove clip region
SelectClipRgn(memdc.m_hDC, NULL);
DeleteObject(hRgn);
}
void CPropTree::Delete(CPropTreeItem* pItem)
{
if (pItem && pItem!=&m_Root && SendNotify(PTN_DELETEITEM, pItem))
return;
// passing in a NULL item is the same as calling DeleteAllItems
if (!pItem)
pItem = &m_Root;
// Clear the visible list before anything gets deleted
ClearVisibleList();
// delete children
CPropTreeItem* pIter;
CPropTreeItem* pNext;
pIter = pItem->GetChild();
while (pIter)
{
pNext = pIter->GetSibling();
DeleteItem(pIter);
pIter = pNext;
}
// unlink from tree
if (pItem->GetParent())
{
if (pItem->GetParent()->GetChild()==pItem)
pItem->GetParent()->SetChild(pItem->GetSibling());
else
{
pIter = pItem->GetParent()->GetChild();
while (pIter->GetSibling() && pIter->GetSibling()!=pItem)
pIter = pIter->GetSibling();
if (pIter->GetSibling())
pIter->SetSibling(pItem->GetSibling());
}
}
if (pItem!=&m_Root)
{
if (pItem==GetFocusedItem())
SetFocusedItem(NULL);
delete pItem;
}
}
void COptionTree::Delete(COptionTreeItem *otiItem)
{
// Declare variables
COptionTreeItem* otiIter;
COptionTreeItem* otiNext;
// Clear visible list
ClearVisibleList();
// Send notify to user
SendNotify(OT_NOTIFY_DELETEITEM, otiItem);
// Passing in a NULL deletes frm root
if (otiItem == NULL)
{
otiItem = &m_otiRoot;
}
// Delete children
otiIter = otiItem->GetChild();
while (otiIter != NULL)
{
// -- Get sibling
otiNext = otiIter->GetSibling();
// -- Delete
DeleteItem(otiIter);
// -- Get next
otiIter = otiNext;
}
// Unlink from tree
if (otiItem->GetParent() != NULL)
{
if (otiItem->GetParent()->GetChild() == otiItem)
{
otiItem->GetParent()->SetChild(otiItem->GetSibling());
}
else
{
otiIter = otiItem->GetParent()->GetChild();
while (otiIter->GetSibling() && otiIter->GetSibling() != otiItem)
{
otiIter = otiIter->GetSibling();
}
if (otiIter->GetSibling())
{
otiIter->SetSibling(otiItem->GetSibling());
}
}
}
// Delete item
if (otiItem != &m_otiRoot)
{
if (otiItem == GetFocusedItem())
{
SetFocusedItem(NULL);
}
otiItem->CleanDestroyWindow();
delete otiItem;
}
}
