Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//=============================================================================//
#include "stdafx.h"
#include "window_anchor_mgr.h"
// ------------------------------------------------------------------------------------ //
// CWindowAnchor.
// ------------------------------------------------------------------------------------ //
bool CWindowAnchor::Init( CWnd *pParentWnd, CWnd *pChildWnd, int aLeft, int aTop, int aRight, int aBottom )
{
m_pWnd = pChildWnd;
m_aLeft = aLeft;
m_aTop = aTop;
m_aRight = aRight;
m_aBottom = aBottom;
if ( m_pWnd && pParentWnd )
{
pParentWnd->GetWindowRect( m_ParentRect );
pChildWnd->GetWindowRect( m_Rect );
return true;
}
else
{
return false;
}
}
void AnchorElement( long *pOut, CRect &rcParent, int startElement, CRect &rcParentStart, int flags )
{
if ( flags == ANCHOR_LEFT )
*pOut = rcParent.left + ( startElement - rcParentStart.left );
else if ( flags == ANCHOR_TOP )
*pOut = rcParent.top + ( startElement - rcParentStart.top );
else if ( flags == ANCHOR_RIGHT )
*pOut = rcParent.right - ( rcParentStart.right - startElement );
else if ( flags == ANCHOR_BOTTOM )
*pOut = rcParent.bottom - ( rcParentStart.bottom - startElement );
else if ( flags == ANCHOR_WIDTH_PERCENT )
*pOut = rcParent.left + (rcParent.Width() * ( startElement - rcParentStart.left )) / rcParentStart.Width();
else if ( flags == ANCHOR_HEIGHT_PERCENT )
*pOut = rcParent.top + (rcParent.Height() * ( startElement - rcParentStart.top )) / rcParentStart.Height();
}
void CWindowAnchor::Update( CWnd *pParentWnd )
{
if ( !m_pWnd )
return;
CRect rcParent;
pParentWnd->GetWindowRect( rcParent );
CRect rcNew;
AnchorElement( &rcNew.left, rcParent, m_Rect.left, m_ParentRect, m_aLeft );
AnchorElement( &rcNew.top, rcParent, m_Rect.top, m_ParentRect, m_aTop );
AnchorElement( &rcNew.right, rcParent, m_Rect.right, m_ParentRect, m_aRight );
AnchorElement( &rcNew.bottom, rcParent, m_Rect.bottom, m_ParentRect, m_aBottom );
pParentWnd->ScreenToClient( rcNew );
m_pWnd->SetWindowPos( NULL, rcNew.left, rcNew.top, rcNew.Width(), rcNew.Height(), SWP_NOZORDER );
m_pWnd->InvalidateRect( NULL );
}
// ------------------------------------------------------------------------------------ //
// CWindowAnchorMgr.
// ------------------------------------------------------------------------------------ //
bool CWindowAnchorMgr::AddAnchor( CWnd *pParentWnd, CWnd *pChildWnd, int aLeft, int aTop, int aRight, int aBottom )
{
int index = m_Anchors.AddToTail();
return m_Anchors[index].Init( pParentWnd, pChildWnd, aLeft, aTop, aRight, aBottom );
}
void CWindowAnchorMgr::UpdateAnchors( CWnd *pParentWnd )
{
FOR_EACH_LL( m_Anchors, i )
{
m_Anchors[i].Update( pParentWnd );
}
}