void ProperList::EnsureVisible(size_t n)
{
if(!IsRowVisible(n))
{
size_t ve = GetVisibleRowsEnd();
if(n > ve)
{
ScrollRows(n - ve);
}
else
{
ScrollToRow(n);
}
}
}
bool wxVListBox::DoSetCurrent(int current)
{
wxASSERT_MSG( current == wxNOT_FOUND ||
(current >= 0 && (size_t)current < GetItemCount()),
wxT("wxVListBox::DoSetCurrent(): invalid item index") );
if ( current == m_current )
{
// nothing to do
return false;
}
if ( m_current != wxNOT_FOUND )
RefreshRow(m_current);
m_current = current;
if ( m_current != wxNOT_FOUND )
{
// if the line is not visible at all, we scroll it into view but we
// don't need to refresh it -- it will be redrawn anyhow
if ( !IsVisible(m_current) )
{
ScrollToRow(m_current);
}
else // line is at least partly visible
{
// it is, indeed, only partly visible, so scroll it into view to
// make it entirely visible
// BUT scrolling down when m_current is first visible makes it
// completely hidden, so that is even worse
while ( (size_t)m_current + 1 == GetVisibleRowsEnd() &&
(size_t)m_current != GetVisibleRowsBegin() &&
ScrollToRow(GetVisibleBegin() + 1) ) ;
// but in any case refresh it as even if it was only partly visible
// before we need to redraw it entirely as its background changed
RefreshRow(m_current);
}
}
return true;
}
bool ContentBoxCtrol::DoSetCurrent(int current)
{
wxASSERT_MSG( current == wxNOT_FOUND ||
(current >= 0 && (size_t)current < GetItemCount()),
"ContentBoxCtrol::DoSetCurrent(): invalid item index" );
if ( current == m_current )
{
// nothing to do
return false;
}
if ( m_current != wxNOT_FOUND )
wxVScrolledWindow::RefreshRow(m_current);
m_current = current;
if ( m_current != wxNOT_FOUND )
{
// if the line is not visible at all, we scroll it into view but we
// don't need to refresh it -- it will be redrawn anyhow
if ( !IsVisible(m_current) )
{
ScrollToRow(m_current);
}
else // line is at least partly visible
{
// it is, indeed, only partly visible, so scroll it into view to
// make it entirely visible
while ( (size_t)m_current == GetVisibleRowsEnd() &&
ScrollToRow(GetVisibleBegin()+1) ) ;
// but in any case refresh it as even if it was only partly visible
// before we need to redraw it entirely as its background changed
wxVScrolledWindow::RefreshRow(m_current);
}
}
return true;
}
