void
TestWidget::ReceiveWithFeedback
(
JBroadcaster* sender,
Message* message
)
{
JXWindowIcon* windowIcon = NULL;
if (GetWindow()->GetIconWidget(&windowIcon) &&
sender == windowIcon && message->Is(JXWindowIcon::kAcceptDrop))
{
JXWindowIcon::AcceptDrop* data =
dynamic_cast<JXWindowIcon::AcceptDrop*>(message);
assert( data != NULL );
if (!data->WillAcceptDrop())
{
data->ShouldAcceptDrop(
WillAcceptDrop(data->GetTypeList(), data->GetActionPtr(),
data->GetPoint(), data->GetTime(), data->GetSource()));
}
}
else
{
JXScrollableWidget::ReceiveWithFeedback(sender, message);
}
}
//-------------------------------------------------------------------//
// OnDragOver() //
//-------------------------------------------------------------------//
// This function takes a drag over request, determines if we are over
// an item, and passes the request to WillAcceptDrop.
//-------------------------------------------------------------------//
DROPEFFECT OleListCtrl::OnDragOver(
CWnd* pWnd,
COleDataObject* pDataObject,
DWORD dwKeyState,
CPoint point
) {
DROPEFFECT deReturn = DROPEFFECT_NONE;
bool bInsertAfter = false;
int nUnderCursor = 0;
UINT nHitFlags;
if ( pDataObject->IsDataAvailable( ClipFormat ) )
{
// Get item under cursor.
nUnderCursor = HitTest( point, &nHitFlags );
// Adjust based on where point is.
// If we're in the top half of the item, insert before.
CRect ItemRect;
GetItemRect( nUnderCursor, &ItemRect, FALSE );
ItemRect.DeflateRect( 0, 0, 0, ItemRect.Height()/2 );
bInsertAfter = ( ItemRect.PtInRect( point ) == FALSE );
deReturn = WillAcceptDrop(
nUnderCursor,
bInsertAfter,
nHitFlags,
pDataObject,
dwKeyState,
true
);
// We don't currently handle text drops.
// } else if ( pDataObject->IsDataAvailable( CF_TEXT ) ) {
}
// TO DO
// Note that this next section is tailored to lists in
// REPORT mode. Other modes may still need further work.
// Convert to always insert AFTER nUnderCursor.
// Note that first we adjust nUnderCursor for drags BELOW
// the bottom item.
if ( nHitFlags & LVHT_NOWHERE )
{
nUnderCursor = GetItemCount() - 1;
}
else if ( !bInsertAfter )
nUnderCursor--;
// Indicate where the drop would be inserted.
if (
(
deReturn == DROPEFFECT_COPY
|| deReturn == DROPEFFECT_MOVE
|| deReturn == DROPEFFECT_LINK
)
&& nUnderCursor > -1
)
DrawInsertionLine( nUnderCursor );
else
{
if ( m_nItemAboveLine > -1 )
{
// Erase the old line.
RedrawItems( m_nItemAboveLine, m_nItemAboveLine );
UpdateWindow();
m_nItemAboveLine = -1;
}
}
return deReturn;
}
