void CPanel::Layout( void )
{
FRect rPanelBounds;
rPanelBounds.x = 0;
rPanelBounds.y = 0;
rPanelBounds.w = GetWidth();
rPanelBounds.h = GetHeight();
FRect rAllBounds(0, 0, 0, 0);
rAllBounds.w = -1;
size_t iCount = m_apControls.size();
for (size_t i = 0; i < iCount; i++)
{
CBaseControl* pControl = m_apControls[i];
if (pControl == m_hHorizontalScrollBar)
continue;
if (pControl == m_hVerticalScrollBar)
continue;
pControl->Layout();
FRect rControlBounds;
rControlBounds.x = pControl->GetLeft();
rControlBounds.y = pControl->GetTop();
rControlBounds.w = pControl->GetWidth();
rControlBounds.h = pControl->GetHeight();
if (rAllBounds.w < 0)
{
rAllBounds = rControlBounds;
continue;
}
if (rControlBounds.x < rAllBounds.x)
{
float flDifference = rAllBounds.x - rControlBounds.x;
rAllBounds.x -= flDifference;
rAllBounds.w += flDifference;
}
if (rControlBounds.y < rAllBounds.y)
{
float flDifference = rAllBounds.y - rControlBounds.y;
rAllBounds.y -= flDifference;
rAllBounds.h += flDifference;
}
if (rControlBounds.Right() > rAllBounds.Right())
rAllBounds.w = rControlBounds.Right() - rAllBounds.x;
if (rControlBounds.Bottom() > rAllBounds.Bottom())
rAllBounds.h = rControlBounds.Bottom() - rAllBounds.y;
}
rAllBounds.w += 5;
rAllBounds.h += 5;
m_rControlBounds = rAllBounds;
if (m_hVerticalScrollBar)
m_hVerticalScrollBar->SetVisible((rAllBounds.y < rPanelBounds.y) || (rAllBounds.Bottom() > rPanelBounds.Bottom()));
if (m_hHorizontalScrollBar)
m_hHorizontalScrollBar->SetVisible((rAllBounds.x < rPanelBounds.x) || (rAllBounds.Right() > rPanelBounds.Right()));
}
