/*
DISCLAIMER

Auther: Mizan Rahman
Original publication location: http://www.codeproject.com/KB/dialog/WndResizer.aspx

This work is provided under the terms and condition described in The Code Project Open License (CPOL)
(http://www.codeproject.com/info/cpol10.aspx)

This disclaimer should not be removed and should exist in any reproduction of this work.
*/

#include "StdAfx.h"
#include "WndResizer.h"



static CMap<HWND, HWND, CWndResizer *, CWndResizer *> WndResizerData;


/////////////////////////////  CWndResizer
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
CWndResizer::CWndResizer(void)
{
  m_pHookedWnd = NULL;
  m_pfnWndProc = NULL;
  root.Name = _T("_root");
  m_pCaptured = NULL;
  m_hOldCursor = NULL;
  m_splitterOffset = 0;

}

CWndResizer::~CWndResizer(void)
{

}
void CWndResizer::GetTrueClientRect(CWnd * pWnd, CRect * prc)
{  
  int nMin = 0;
  int nMax = 0;
  int nCur = 0;

  pWnd->GetClientRect(prc);

  if ( (pWnd->GetStyle() & WS_HSCROLL) > 0)
  {
    pWnd->GetScrollRange(SB_HORZ, &nMin, &nMax);
    nCur = pWnd->GetScrollPos(SB_HORZ);
    prc->right = prc->left + nMax;
    prc->OffsetRect( -nCur , 0);
  }

  if ( (pWnd->GetStyle() & WS_VSCROLL) > 0)
  {
    pWnd->GetScrollRange(SB_VERT, &nMin, &nMax);
    nCur = pWnd->GetScrollPos(SB_VERT);
    prc->bottom = prc->top + nMax;
    prc->OffsetRect(0, -nCur);
  }  
}
void CWndResizer::EnsureRootMinMax()
{
  if (root.Width() < root.MinSize.cx)
  {
     root.right = root.left + root.MinSize.cx;
  }
  if (root.Width() > root.MaxSize.cx)
  {
     root.right = root.left + root.MaxSize.cx;
  }

  if (root.Height() < root.MinSize.cy)
  {
     root.bottom = root.top + root.MinSize.cy;
  }
  if (root.Height() > root.MaxSize.cy)
  {
     root.bottom = root.top + root.MaxSize.cy;
  }
}

void CWndResizer::OnSize(UINT nType, int cx, int cy)
{
  GetTrueClientRect(m_pHookedWnd, &root);
  EnsureRootMinMax();
  root.OnResized();
  ResizeUI(&root);
}
void CWndResizer::OnScroll()
{
  GetTrueClientRect(m_pHookedWnd, &root);
  EnsureRootMinMax();
  root.OnResized();
  ResizeUI(&root);
}
BOOL CWndResizer::Hook(CWnd * pParent)
{
  ASSERT( m_pHookedWnd == NULL );

  m_pHookedWnd = pParent;

  GetTrueClientRect(m_pHookedWnd, &root);
  
  root.m_pHookWnd = m_pHookedWnd;

  // create the resize gripper panel
  CRect rcResziGrip(&root);
  int cx = ::GetSystemMetrics(SM_CXHSCROLL);
  int cy = ::GetSystemMetrics(SM_CYVSCROLL);
  rcResziGrip.DeflateRect(root.Width() - cx, root.Height() - cy, 0, 0);
  CGripperPanel * pResizeGripper = new CGripperPanel(&rcResziGrip);
  pResizeGripper->SetAnchor( ANCHOR_RIGHT | ANCHOR_BOTTOM );
  pResizeGripper->Name = _T("_resizeGrip");
  root.AddChild( pResizeGripper );

  WndResizerData.SetAt(m_pHookedWnd->m_hWnd, this);

  m_pfnWndProc = (WNDPROC)::SetWindowLongPtr(m_pHookedWnd->m_hWnd, GWLP_WNDPROC, (LONG_PTR)WindowProc);
  return TRUE;
}
BOOL CWndResizer::Hook(CWnd * pParent, CSize &  size)
{
  ASSERT( m_pHookedWnd == NULL );

  m_pHookedWnd = pParent;

  GetTrueClientRect(m_pHookedWnd, &root);
  root.right = root.left + size.cx;
  root.bottom = root.top + size.cy;
  root.m_pHookWnd = m_pHookedWnd;

  // create the resize gripper panel
  CRect rcResziGrip(&root);
  int cx = ::GetSystemMetrics(SM_CXHSCROLL);
  int cy = ::GetSystemMetrics(SM_CYVSCROLL);
  rcResziGrip.DeflateRect(root.Width() - cx, root.Height() - cy, 0, 0);
  CGripperPanel * pResizeGripper = new CGripperPanel(&rcResziGrip);
  pResizeGripper->SetAnchor( ANCHOR_RIGHT | ANCHOR_BOTTOM );
  pResizeGripper->Name = _T("_resizeGrip");
  root.AddChild( pResizeGripper );

  WndResizerData.SetAt(m_pHookedWnd->m_hWnd, this);

  m_pfnWndProc = (WNDPROC)::SetWindowLongPtr(m_pHookedWnd->m_hWnd, GWLP_WNDPROC, (LONG_PTR)WindowProc);
  return TRUE;
}

void CWndResizer::ResizeUI(CPanel * pRoot)
{
  CPanelList panels;
  GetUIPanels(pRoot, &panels, FALSE);

  POSITION pos = NULL;

  if (panels.GetCount() > 0)
  {
    HDWP hDWP = ::BeginDeferWindowPos((int) panels.GetCount());
    ASSERT( hDWP != NULL);
    pos = panels.GetHeadPosition();
    while (pos != NULL)
    {
      CUIPanel * pPanel = (CUIPanel *) panels.GetNext(pos);

        ::DeferWindowPos(hDWP, m_pHookedWnd->GetDlgItem(pPanel->m_uID)->m_hWnd, NULL,
                      pPanel->left , pPanel->top , pPanel->Width(), pPanel->Height(),
                      SWP_NOACTIVATE | SWP_NOZORDER );

    }
    BOOL bOk = ::EndDeferWindowPos(hDWP);
     ASSERT( bOk );
    m_pHookedWnd->InvalidateRect(pRoot, FALSE);
  }

  panels.RemoveAll();
  GetUIPanels(pRoot, &panels, TRUE);
  pos = panels.GetHeadPosition();
  while (pos != NULL)
  {
    CUIPanel * pPanel = (CUIPanel *) panels.GetNext(pos);
    m_pHookedWnd->GetDlgItem(pPanel->m_uID)->MoveWindow(pPanel);
  }
}


void CWndResizer::OnLButtonDown(UINT nFlags, CPoint point)
{
  UpdateSplitterOffset(point);
}
void CWndResizer::OnMouseMove(UINT nFlags, CPoint point)
{
  if (m_pCaptured != NULL )
  {
    if ((nFlags & MK_LBUTTON) <= 0)
    {
      CPoint ptScreen = point;
      m_pHookedWnd->ClientToScreen(&ptScreen);
      HWND hWndFromPoint = ::WindowFromPoint(ptScreen);
      if (m_pCaptured->PtInRect( point ) == FALSE || hWndFromPoint != m_pHookedWnd->m_hWnd)
      {
        ::ReleaseCapture();      
        m_pCaptured = NULL;
        HCURSOR hCur = ::SetCursor(m_hOldCursor);
        ::DestroyCursor( hCur );
        m_hOldCursor = NULL;
      }
    }
  }

  if (m_pCaptured == NULL )
  {
    m_pCaptured = FindSplitterFromPoint(&root, point);
    if (m_pCaptured != NULL)
    {
      m_pHookedWnd->SetCapture();
      LPCTSTR cursor = NULL;
      CSplitContainer * pSplitContainer = (CSplitContainer *)m_pCaptured->Parent;
      if (pSplitContainer->m_Orientation == SPLIT_CONTAINER_H)
      {
        cursor = IDC_SIZEWE;
      }
      else
      {
        cursor = IDC_SIZENS;
      }
      HCURSOR hCur = AfxGetApp()->LoadStandardCursor(cursor);
      HCURSOR m_hOldCursor = ::SetCursor(hCur);
    }
  }

  if (m_pCaptured != NULL && (nFlags & MK_LBUTTON) > 0)
  {
    CSplitContainer * pSplitterContainer = (CSplitContainer *) m_pCaptured->Parent;
    
    if (pSplitterContainer->m_Orientation == SPLIT_CONTAINER_H)
    {
      pSplitterContainer->SetSplitterPosition( point.x - m_splitterOffset);
    }
    else
    {
      pSplitterContainer->SetSplitterPosition( point.y - m_splitterOffset);
    }
    UpdateSplitterOffset(point);

    ResizeUI(pSplitterContainer);

  }
}
void CWndResizer::OnLButtonUp(UINT nFlags, CPoint point)
{
  OnMouseMove(nFlags, point);
}
void CWndResizer::UpdateSplitterOffset(CPoint ptCurr)
{
  if (m_pCaptured == NULL )
  {
    return;
  }
  if (((CSplitContainer *)m_pCaptured->Parent)->m_Orientation == SPLIT_CONTAINER_H)
  {
    if ( ptCurr.x  < m_pCaptured->left)
    {
      m_splitterOffset = 0;
    }
    else if ( ptCurr.x > m_pCaptured->right)
    {
      m_splitterOffset = m_pCaptured->Width();
    }
    else
    {
      m_splitterOffset = ptCurr.x - m_pCaptured->left;
    }
  }
  else
  {
    if ( ptCurr.y  < m_pCaptured->top)
    {
      m_splitterOffset = 0;
    }
    else if ( ptCurr.y > m_pCaptured->bottom)
    {
      m_splitterOffset = m_pCaptured->Height();
    }
    else
    {
      m_splitterOffset = ptCurr.y - m_pCaptured->top;
    }    
  }
}
void CWndResizer::OnSizing(UINT fwSide, LPRECT pRect)
{

  CRect * prc = (CRect *) pRect;

  CRect rcMin(0, 0, root.MinSize.cx, root.MinSize.cy);
  CRect rcMax(0, 0, root.MaxSize.cx, root.MaxSize.cy);

  LONG_PTR style = GetWindowLongPtr(m_pHookedWnd->m_hWnd , GWL_STYLE);
  LONG_PTR styleEx = GetWindowLongPtr(m_pHookedWnd->m_hWnd, GWL_EXSTYLE);

  ::AdjustWindowRectEx(&rcMin, (DWORD) style, (m_pHookedWnd->GetMenu() != NULL), (DWORD) styleEx);
  ::AdjustWindowRectEx(&rcMax, (DWORD) style, (m_pHookedWnd->GetMenu() != NULL), (DWORD) styleEx);

  switch (fwSide)
  {
  case WMSZ_BOTTOM:
    if (prc->Height() < rcMin.Height() )
    {
      prc->bottom = prc->top + rcMin.Height();
    }
    if (prc->Height() > rcMax.Height() )
    {
      prc->bottom = prc->top + rcMax.Height();
    }    
    break;
  case WMSZ_BOTTOMLEFT:
    if (prc->Height() < rcMin.Height() )
    {
      prc->bottom = prc->top + rcMin.Height();
    }
    if (prc->Width() < rcMin.Width() )
    {
      prc->left = prc->right - rcMin.Width();
    }

    if (prc->Height() > rcMax.Height() )
    {
      prc->bottom = prc->top + rcMax.Height();
    }
    if (prc->Width() > rcMax.Width() )
    {
      prc->left = prc->right - rcMax.Width();
    }
    break;
  case WMSZ_BOTTOMRIGHT:
    if (prc->Height() < rcMin.Height() )
    {
      prc->bottom = prc->top + rcMin.Height();
    }
    if (prc->Width() < rcMin.Width() )
    {
      prc->right = prc->left + rcMin.Width();
    }

    if (prc->Height() > rcMax.Height() )
    {
      prc->bottom = prc->top + rcMax.Height();
    }
    if (prc->Width() > rcMax.Width() )
    {
      prc->right = prc->left + rcMax.Width();
    }

    break;
  case WMSZ_LEFT:
    if (prc->Width() < rcMin.Width() )
    {
      prc->left = prc->right - rcMin.Width();
    }

    if (prc->Width() > rcMax.Width() )
    {
      prc->left = prc->right - rcMax.Width();
    }
    break;
  case WMSZ_RIGHT:
    if (prc->Width() < rcMin.Width() )
    {
      prc->right = prc->left + rcMin.Width();
    }

    if (prc->Width() > rcMax.Width() )
    {
      prc->right = prc->left + rcMax.Width();
    }
    break;
  case WMSZ_TOP:
    if (prc->Height() < rcMin.Height() )
    {
      prc->top = prc->bottom - rcMin.Height();
    }

    if (prc->Height() > rcMax.Height() )
    {
      prc->top = prc->bottom - rcMax.Height();
    }
    break;
  case WMSZ_TOPLEFT:
    if (prc->Height() < rcMin.Height() )
    {
      prc->top = prc->bottom - rcMin.Height();
    }
    if (prc->Width() < rcMin.Width() )
    {
      prc->left = prc->right - rcMin.Width();
    }


    if (prc->Height() > rcMax.Height() )
    {
      prc->top = prc->bottom - rcMax.Height();
    }
    if (prc->Width() > rcMax.Width() )
    {
      prc->left = prc->right - rcMax.Width();
    }
    break;
  case WMSZ_TOPRIGHT:
    if (prc->Height() < rcMin.Height() )
    {
      prc->top = prc->bottom - rcMin.Height();
    }
    if (prc->Width() < rcMin.Width() )
    {
      prc->right = prc->left + rcMin.Width();
    }

    if (prc->Height() > rcMax.Height() )
    {
      prc->top = prc->bottom - rcMax.Height();
    }
    if (prc->Width() > rcMax.Width() )
    {
      prc->right = prc->left + rcMax.Width();
    }
    break;
  }

}

void CWndResizer::OnPaint()
{
  if (m_pHookedWnd == NULL)
  {
    return;
  }
  CPaintDC dc(m_pHookedWnd); // device context for painting

  CPanelList panelList;
  GetVisualPanels(&root, &panelList);
  POSITION pos = panelList.GetHeadPosition();
  while (pos != NULL)
  {
    CVisualPanel * pPanel = (CVisualPanel *) panelList.GetNext(pos);
    if (pPanel->m_bVisible)
    {
      pPanel->Draw(&dc);
    }
  }

}


BOOL CWndResizer::SetAnchor(LPCTSTR panelName, UINT uAnchor)
{
  // container must already exist
  CPanel * pPanel = NULL;
  if ( (pPanel = FindPanelByName(&root, panelName)) == NULL)  
  {
    return FALSE;
  }

  return pPanel->SetAnchor(uAnchor);
}

BOOL CWndResizer::SetAnchor(UINT uID, UINT uAnchor)
{
  ASSERT(m_pHookedWnd != NULL);

  CUIPanel * pPanel = GetUIPanel(uID);

  if (pPanel == NULL)
  {
    return FALSE;
  }
  pPanel->SetAnchor(uAnchor);  
  
  return TRUE;
}
BOOL CWndResizer::GetAnchor(LPCTSTR panelName, UINT & anchor)
{
  CPanel * pPanel = NULL;
  if ( (pPanel = FindPanelByName(&root, panelName)) == NULL)  // name of parent must already exist
  {
    return FALSE;
  }

  anchor = pPanel->Anchor;
  return TRUE;
}
BOOL CWndResizer::GetAnchor(UINT uID, UINT & anchor)
{
  CPanel * pPanel = NULL;
  if ( (pPanel = FindPanelByName(&root, IdToName(uID))) == NULL)  // name of parent must already exist
  {
    return FALSE;
  }

  anchor = pPanel->Anchor;
  return TRUE;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////

BOOL CWndResizer::SetDock(LPCTSTR panelName, UINT uDock)
{
  // container must already exist
  CPanel * pPanel = NULL;
  if ( (pPanel = FindPanelByName(&root, panelName)) == NULL)  
  {
    return FALSE;
  }

  pPanel->Dock = uDock ;
  return TRUE;
}

BOOL CWndResizer::SetDock(UINT uID, UINT uDock)
{
  ASSERT(m_pHookedWnd != NULL);

  CUIPanel * pPanel = GetUIPanel(uID);

  if (pPanel == NULL)
  {
    return FALSE;
  }
  pPanel->Dock = uDock;  
  
  return TRUE;
}
BOOL CWndResizer::GetDock(LPCTSTR panelName, UINT & uDock)
{
  CPanel * pPanel = NULL;
  if ( (pPanel = FindPanelByName(&root, panelName)) == NULL)  // name of parent must already exist
  {
    return FALSE;
  }

  uDock = pPanel->Dock;
  return TRUE;
}
BOOL CWndResizer::GetDock(UINT uID, UINT & uDock)
{
  CPanel * pPanel = NULL;
  if ( (pPanel = FindPanelByName(&root, IdToName(uID))) == NULL)  // name of parent must already exist
  {
    return FALSE;
  }

  uDock = pPanel->Dock;
  return TRUE;
}


//////////////////////
BOOL CWndResizer::SetParent(LPCTSTR panelName, LPCTSTR parentName)
{
  ASSERT(m_pHookedWnd != NULL);


  // now make sure parentName is OK
  CPanel * pParent = NULL;
  if ( (pParent = FindPanelByName(&root, parentName)) == NULL)  // name of parent must already exist
  {
    return FALSE;
  }

  // make sure panelName exist
  CPanel * pPanel = NULL;
  if ((pPanel = FindPanelByName(&root, panelName)) == NULL)
  {
    return FALSE;
  }

  return pParent->AddChild(pPanel);
}
BOOL CWndResizer::SetParent(UINT uID, LPCTSTR parentName)
{
  ASSERT(m_pHookedWnd != NULL);

  // now make sure parentName is OK
  CPanel * pParent = NULL;
  if ( (pParent = FindPanelByName(&root, parentName)) == NULL)  // name of parent must already exist
  {
    return FALSE;
  }
  CPanel * pPanel = NULL;

  // first see if it is already defined
  if ((pPanel = FindPanelByName(&root, IdToName(uID))) == NULL)
  {
    if ((pPanel = CreateUIPanel(uID)) == NULL)
    {
      return FALSE;
    }
  }

  return pParent->AddChild(pPanel);

}

BOOL CWndResizer::SetParent(LPCTSTR panelName, UINT uParentID)
{
  ASSERT(m_pHookedWnd != NULL);

  // now make sure parentName is OK
  CPanel * pParent = GetUIPanel(uParentID);
  if ( pParent == NULL)  // name of parent must already exist
  {
    return FALSE;
  }

  // make sure panelName exist
  CPanel * pPanel = NULL;
  if ((pPanel = FindPanelByName(&root, panelName)) == NULL)
  {
    return FALSE;
  }

  return pParent->AddChild(pPanel);

}
BOOL CWndResizer::SetParent(UINT uID, UINT uParentID)
{
  CPanel * pParent = GetUIPanel(uParentID);
  if (pParent == NULL)
  {
    return FALSE;
  }
  CPanel * pPanel = GetUIPanel(uID);;
  if (pParent == NULL)
  {
    return FALSE;
  }

  return pParent->AddChild( pPanel );

}


BOOL CWndResizer::GetParent(LPCTSTR panelName, CString & parentName)
{
  CPanel * pPanel = NULL;
  if ( (pPanel = FindPanelByName(&root, panelName)) == NULL) 
  {
    return FALSE;
  }

  parentName = pPanel->Parent->Name;
  return TRUE;
}
BOOL CWndResizer::GetParent(UINT uID, CString & parentName)
{
  CPanel * pPanel = NULL;
  if ( (pPanel = FindPanelByName(&root, IdToName(uID))) == NULL)  // name of parent must already exist
  {
    return FALSE;
  }

  parentName = pPanel->Parent->Name;
  return TRUE;
}

BOOL CWndResizer::SetFixedPanel(LPCTSTR splitContainerName, short panel)
{
  CPanel * pContainer = FindPanelByName(&root, splitContainerName);
  if (pContainer == NULL)
  {
    return FALSE;
  }
  CSplitContainer * pSplitContainer =  dynamic_cast<CSplitContainer *>( pContainer );
  if (pSplitContainer == NULL)
  {
    return FALSE;
  }

  pSplitContainer->SetFixedPanel(panel);
  return TRUE;
}
BOOL CWndResizer::GetFixedPanel(LPCTSTR splitContainerName, short & panel)
{
  CPanel * pContainer = FindPanelByName(&root, splitContainerName);
  if (pContainer == NULL)
  {
    return FALSE;
  }
  CSplitContainer * pSplitContainer =  dynamic_cast<CSplitContainer *> (pContainer);
  if (pSplitContainer == NULL)
  {
    return FALSE;
  }
  panel = pSplitContainer->GetFixedPanel();
  return TRUE;

}

BOOL CWndResizer::SetIsSplitterFixed(LPCTSTR splitContainerName, BOOL fixed)
{
  CPanel * pContainer = FindPanelByName(&root, splitContainerName);
  if (pContainer == NULL)
  {
    return FALSE;
  }
  CSplitContainer * pSplitContainer =  dynamic_cast<CSplitContainer *> (pContainer);
  if (pSplitContainer == NULL)
  {
    return FALSE;
  }
  pSplitContainer->SetIsSplitterFixed( fixed );
  return TRUE;
}
BOOL CWndResizer::GetIsSplitterFixed(LPCTSTR splitContainerName, BOOL &fixed)
{
  CPanel * pContainer = FindPanelByName(&root, splitContainerName);
  if (pContainer == NULL)
  {
    return FALSE;
  }
  CSplitContainer * pSplitContainer =  dynamic_cast<CSplitContainer *> (pContainer);
  if (pSplitContainer == NULL)
  {
    return FALSE;
  }
  fixed = pSplitContainer->GetIsSplitterFixed();
  return TRUE;
}



BOOL CWndResizer::SetShowSplitterGrip(LPCTSTR splitContainerName, BOOL bShow)
{
  CPanel * pContainer = FindPanelByName(&root, splitContainerName);
  if (pContainer == NULL)
  {
    return FALSE;
  }
  CSplitContainer * pSplitContainer =  dynamic_cast<CSplitContainer *> (pContainer);
  if (pSplitContainer == NULL)
  {
    return FALSE;
  }
  pSplitContainer->SetShowSplitterGrip( bShow );
  return TRUE;
}
BOOL CWndResizer::GetShowSplitterGrip(LPCTSTR splitContainerName, BOOL &bShow)
{
  CPanel * pContainer = FindPanelByName(&root, splitContainerName);
  if (pContainer == NULL)
  {
    return FALSE;
  }
  CSplitContainer * pSplitContainer =  dynamic_cast<CSplitContainer *> (pContainer);
  if (pSplitContainer == NULL)
  {
    return FALSE;
  }
  bShow = pSplitContainer->GetShowSplitterGrip();
  return TRUE;
}




/////////////////////////
BOOL CWndResizer::SetMinimumSize( LPCTSTR panelName, CSize & size)
{
  CPanel * pPanel = NULL;

  if ( (pPanel = FindPanelByName(&root, panelName)) == NULL)  
  {
    return FALSE;
  }
  return pPanel->SetMinSize( size );
}
BOOL CWndResizer::SetMinimumSize(UINT uID, CSize & size)
{
  CPanel * pPanel = NULL;

  if ( (pPanel = FindPanelByName(&root, IdToName(uID))) == NULL) 
  {
    if ((pPanel = CreateUIPanel(uID)) == NULL)
    {
      return FALSE;
    }
  }

  return pPanel->SetMinSize( size );
}

BOOL CWndResizer::GetMinimumSize(LPCTSTR panelName, CSize & size) 
{
  CPanel * pPanel = NULL;

  if ( (pPanel = FindPanelByName(&root, panelName)) == NULL) 
  {
    return FALSE;
  }

  size = pPanel->MinSize;
  return TRUE;
}
BOOL CWndResizer::GetMinimumSize(UINT uID, CSize & size) 
{
  const CPanel * pPanel = NULL;

  if ( (pPanel = FindPanelByName(&root, IdToName(uID))) == NULL) 
  {
    return FALSE;
  }

  size = pPanel->MinSize;
  return TRUE;
}
BOOL CWndResizer::SetMaximumSize(UINT uID, CSize & size)
{
  CPanel * pPanel = NULL;

  if ( (pPanel = FindPanelByName(&root, IdToName(uID))) == NULL)  
  {
    return FALSE;
  }
  
  return pPanel->SetMaxSize(size);
}

BOOL CWndResizer::SetMaximumSize( LPCTSTR panelName, CSize & size)
{
  CPanel * pPanel = NULL;

  if ( (pPanel = FindPanelByName(&root, panelName)) == NULL) 
  {
    return FALSE;
  }

  return pPanel->SetMaxSize(size);

}
BOOL CWndResizer::GetMaximumSize(  LPCTSTR panelName, CSize & size) 
{
  CPanel * pPanel = NULL;
  if ( (pPanel = FindPanelByName(&root, panelName)) == NULL)  
  {
    return FALSE;
  }

  size = pPanel->MaxSize;
  return TRUE;
}
BOOL CWndResizer::GetMaximumSize(  UINT uID, CSize & size) 
{
  CPanel * pPanel = NULL;
  if ( (pPanel = FindPanelByName(&root, IdToName(uID))) == NULL)  
  {
    return FALSE;
  }

  size = pPanel->MaxSize;
  return TRUE;
}
void CWndResizer::SetShowResizeGrip(BOOL show)
{  
  CGripperPanel * pPanel = (CGripperPanel *)FindPanelByName(&root, _T("_resizeGrip"));
  ASSERT(pPanel != NULL);
  if ( pPanel->m_bVisible != show )
  {
    pPanel->m_bVisible = show;
    m_pHookedWnd->Invalidate(TRUE);
  }
}
BOOL CWndResizer::GetShowResizeGrip()
{
  CGripperPanel * pPanel = (CGripperPanel *)FindPanelByName(&root, _T("_resizeGrip"));
  ASSERT(pPanel != NULL);
  return pPanel->m_bVisible ;

} 
void CWndResizer::OnDestroy()
{
  if (m_pHookedWnd != NULL)
  {
    Unhook();
  }
}

BOOL CWndResizer::Unhook()
{
  ASSERT( m_pHookedWnd != NULL );
  if (m_pHookedWnd == NULL )
  {
    return FALSE; //hasent been hooked
  }

  WNDPROC pWndProc = (WNDPROC)::SetWindowLongPtr(m_pHookedWnd->m_hWnd, GWLP_WNDPROC, (LONG_PTR)m_pfnWndProc);
  WndResizerData.RemoveKey(m_pHookedWnd->m_hWnd); 
  root.m_pHookWnd = NULL;
  m_pHookedWnd = NULL;

  // destroy all chilldren
  while(root.Children.GetCount() > 0 )
  {
    CPanel * pChild = root.Children.RemoveHead();
    delete pChild;
  }
  return TRUE;
}


LRESULT CALLBACK CWndResizer::WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
  CWndResizer * pResizer = NULL;
  WndResizerData.Lookup(hWnd, pResizer);
  ASSERT( pResizer != NULL);


	switch (uMsg)
	{
		case WM_SIZE:
      {
	      int cx = 0;
	      int cy = 0;
        cx = LOWORD(lParam);    
        cy = HIWORD(lParam);    
        pResizer->OnSize((UINT) wParam, cx, cy);
      }
			break;
    case WM_SIZING:
      pResizer->OnSizing((UINT) wParam, (LPRECT)lParam);      
      break;
    case WM_DESTROY:
      pResizer->OnDestroy();
      break;
    case WM_MOUSEMOVE:
      pResizer->OnMouseMove((UINT) wParam, CPoint(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)));
      break;
    case WM_LBUTTONDOWN:
      pResizer->OnLButtonDown((UINT) wParam, CPoint(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)));
      break;
    case WM_LBUTTONUP:
      pResizer->OnLButtonUp((UINT) wParam, CPoint(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)));
      break;
    case WM_PAINT:
      pResizer->OnPaint();     
      break;
    case WM_HSCROLL:
    case WM_VSCROLL:
      pResizer->OnScroll();
      break;

    //case WM_ERASEBKGND:
    //  return FALSE;
    //  break;
		default:
			break;
	}

	return ::CallWindowProc(pResizer->m_pfnWndProc, hWnd, uMsg, wParam, lParam);


}



BOOL CWndResizer::CreateSplitContainer(LPCTSTR panelName, LPCTSTR panelNameA, LPCTSTR panelNameB)
{
  CPanel * pPanel = NULL;
  if ((pPanel = FindPanelByName(&root, panelName)) != NULL)  
  {
    return FALSE;
  }

  CPanel * pPanelA = NULL;
  if ((pPanelA = FindPanelByName(&root, panelNameA)) == NULL)  
  {
    return FALSE;
  }


  CPanel * pPanelB = NULL;
  if ((pPanelB = FindPanelByName(&root, panelNameB)) == NULL)  
  {
    return FALSE;
  }
  

  if (pPanelA == pPanelB) // two panel cannot be same
  {
    return FALSE;
  }


  CPanel * pSplitterContainer = CSplitContainer::Create(pPanelA, pPanelB);
  if (pSplitterContainer == NULL)
  {
    return FALSE;
  }
  pSplitterContainer->Name = panelName;

  return root.AddChild(pSplitterContainer);
}



BOOL CWndResizer::CreateSplitContainer(LPCTSTR panelName, LPCTSTR panelNameA, UINT panelIDB)
{
  CPanel * pPanel = NULL;
  if ((pPanel = FindPanelByName(&root, panelName)) != NULL)  
  {
    return FALSE;
  }

  CPanel * pPanelA = NULL;
  if ((pPanelA = FindPanelByName(&root, panelNameA)) == NULL)  
  {
    return FALSE;
  }

  CPanel * pPanelB = GetUIPanel(panelIDB);
  if (pPanelB == NULL )
  {
    return FALSE;
  }
  

  if (pPanelA == pPanelB) // two panel cannot be same
  {
    return FALSE;
  }

  // first lets make sure the two CRect are properly set

  CPanel * pSplitterContainer = CSplitContainer::Create(pPanelA, pPanelB);
  if (pSplitterContainer == NULL)
  {
    return FALSE;
  }
  pSplitterContainer->Name = panelName;

  return root.AddChild(pSplitterContainer);

}


BOOL CWndResizer::CreateSplitContainer(LPCTSTR panelName, UINT panelIDA, LPCTSTR panelNameB)
{
  CPanel * pPanel = NULL;
  if ((pPanel = FindPanelByName(&root, panelName)) != NULL)  
  {
    return FALSE;
  }

  CPanel * pPanelA = GetUIPanel(panelIDA);
  if (pPanelA == NULL )
  {
    return FALSE;
  }


  CPanel * pPanelB = NULL;
  if ((pPanelB = FindPanelByName(&root, panelNameB)) == NULL)  
  {
    return FALSE;
  }

  if (pPanelA == pPanelB) // two panel cannot be same
  {
    return FALSE;
  }
  
  CPanel * pSplitterContainer = CSplitContainer::Create(pPanelA, pPanelB);
  if (pSplitterContainer == NULL)
  {
    return FALSE;
  }
  pSplitterContainer->Name.Append(panelName);

  return root.AddChild(pSplitterContainer);

}



BOOL CWndResizer::CreateSplitContainer(LPCTSTR panelName, UINT panelIDA, UINT panelIDB)
{
  CPanel * pPanel = NULL;
  if ((pPanel = FindPanelByName(&root, panelName)) != NULL)  
  {
    return FALSE;
  }

  CPanel * pPanelA = GetUIPanel(panelIDA);
  if (pPanelA == NULL )
  {
    return FALSE;
  }


  CPanel * pPanelB = GetUIPanel(panelIDB);
  if (pPanelB == NULL )
  {
    return FALSE;
  }
  
  if (pPanelA == pPanelB) // two panel cannot be same
  {
    return FALSE;
  }
 
  CPanel * pSplitterContainer = CSplitContainer::Create(pPanelA, pPanelB);
  if (pSplitterContainer == NULL)
  {
    return FALSE;
  }
  pSplitterContainer->Name = panelName;

  return root.AddChild(pSplitterContainer);

}

BOOL CWndResizer::SetSplitterPosition(LPCTSTR splitContainerName, UINT position)
{
  ASSERT(m_pHookedWnd != NULL);
  CPanel * pPanel = NULL;
  if ((pPanel = FindPanelByName(&root, splitContainerName)) == NULL)
  {
    return FALSE;
  }
  CSplitContainer * pContainer = dynamic_cast<CSplitContainer *> ( pPanel);
  if (pContainer == NULL)
  {
    return FALSE;
  }
  pContainer->SetSplitterPosition( (int) position);
  ResizeUI( pContainer );
  return TRUE;
}
BOOL CWndResizer::GetSplitterPosition(LPCTSTR splitContainerName, UINT & position)
{
  ASSERT(m_pHookedWnd != NULL);
  CPanel * pPanel = NULL;
  if ((pPanel = FindPanelByName(&root, splitContainerName)) == NULL)
  {
    return FALSE;
  }
  CSplitContainer * pContainer = dynamic_cast<CSplitContainer *> ( pPanel);
  if (pContainer == NULL)
  {
    return FALSE;
  }
  position = (UINT) pContainer->GetSplitterPosition();
  return TRUE;
}

BOOL CWndResizer::CreatePanel(UINT uID)
{
  ASSERT(m_pHookedWnd != NULL);
  if (FindPanelByName(&root, IdToName(uID)) != NULL)
  {
    return FALSE;
  }
  CUIPanel * pPanel = GetUIPanel(uID);
  ASSERT(pPanel != NULL);

  pPanel->m_bOle = TRUE;

  return TRUE;
}

BOOL CWndResizer::SetFlowDirection(LPCTSTR flowPanelName, short direction)
{
  ASSERT(m_pHookedWnd != NULL);
  CPanel * pPanel = NULL;
  if ((pPanel = FindPanelByName(&root, flowPanelName)) == NULL)
  {
    return FALSE;
  }
  CFlowLayoutPanel * pFlowLayout = dynamic_cast<CFlowLayoutPanel *> ( pPanel);
  if (pFlowLayout == NULL)
  {
    return FALSE;
  }
  pFlowLayout->SetFlowDirection( direction == 1 ? LEFT_TO_RIGHT : TOP_TO_BOTTOM);
  return TRUE;
}
BOOL CWndResizer::GetFlowDirection(LPCTSTR flowPanelName, short &direction)
{
  ASSERT(m_pHookedWnd != NULL);
  CPanel * pPanel = NULL;
  if ((pPanel = FindPanelByName(&root, flowPanelName)) == NULL)
  {
    return FALSE;
  }
  CFlowLayoutPanel * pFlowLayout = dynamic_cast<CFlowLayoutPanel *> ( pPanel);
  if (pFlowLayout == NULL)
  {
    return FALSE;
  }
  direction = (pFlowLayout->GetFlowDirection() == LEFT_TO_RIGHT ? 1 : 2);
  return TRUE;
}

BOOL CWndResizer::SetFlowItemSpacingX(LPCTSTR flowPanelName, int nSpacing)
{
  ASSERT(m_pHookedWnd != NULL);
  CPanel * pPanel = NULL;
  if ((pPanel = FindPanelByName(&root, flowPanelName)) == NULL)
  {
    return FALSE;
  }
  CFlowLayoutPanel * pFlowLayout = dynamic_cast<CFlowLayoutPanel *> ( pPanel);
  if (pFlowLayout == NULL)
  {
    return FALSE;
  }
  pFlowLayout->SetItemSpacingX(nSpacing);
  return TRUE;
}
BOOL CWndResizer::GetFlowItemSpacingX(LPCTSTR flowPanelName, int &nSpacing)
{
  ASSERT(m_pHookedWnd != NULL);
  CPanel * pPanel = NULL;
  if ((pPanel = FindPanelByName(&root, flowPanelName)) == NULL)
  {
    return FALSE;
  }
  CFlowLayoutPanel * pFlowLayout = dynamic_cast<CFlowLayoutPanel *> ( pPanel);
  if (pFlowLayout == NULL)
  {
    return FALSE;
  }
  nSpacing = pFlowLayout->GetItemSpacingX();
  return TRUE;
}

BOOL CWndResizer::SetFlowItemSpacingY(LPCTSTR flowPanelName, int nSpacing)
{
  ASSERT(m_pHookedWnd != NULL);
  CPanel * pPanel = NULL;
  if ((pPanel = FindPanelByName(&root, flowPanelName)) == NULL)
  {
    return FALSE;
  }
  CFlowLayoutPanel * pFlowLayout = dynamic_cast<CFlowLayoutPanel *> ( pPanel);
  if (pFlowLayout == NULL)
  {
    return FALSE;
  }
  pFlowLayout->SetItemSpacingY(nSpacing);
  return TRUE;

}

BOOL CWndResizer::GetFlowItemSpacingY(LPCTSTR flowPanelName, int &nSpacing)
{
  ASSERT(m_pHookedWnd != NULL);
  CPanel * pPanel = NULL;
  if ((pPanel = FindPanelByName(&root, flowPanelName)) == NULL)
  {
    return FALSE;
  }
  CFlowLayoutPanel * pFlowLayout = dynamic_cast<CFlowLayoutPanel *> ( pPanel);
  if (pFlowLayout == NULL)
  {
    return FALSE;
  }
  nSpacing = pFlowLayout->GetItemSpacingY();
  return TRUE;

}


BOOL CWndResizer::CreateFlowLayoutPanel(LPCTSTR panelName, const CRect * prcPanel)
{
  if (FindPanelByName(&root, panelName) != NULL)  
  {
    return FALSE;
  }

  CPanel * pPanel = new CFlowLayoutPanel(prcPanel);
  pPanel->Name = panelName;
  return root.AddChild(pPanel);
 
}
BOOL CWndResizer::CreateFlowLayoutPanel(LPCTSTR panelName, const CUIntArray * parrID, BOOL setAsChildren)
{
  ASSERT(m_pHookedWnd != NULL);

  CRect rcFinal(0, 0, 0, 0);
  for(int i = 0; i < parrID->GetCount(); i++)
  {
    CRect rc(0, 0, 0, 0);
    m_pHookedWnd->GetDlgItem(parrID->GetAt(i))->GetWindowRect(&rc);
    m_pHookedWnd->ScreenToClient(&rc);
    rcFinal.UnionRect(&rcFinal, &rc);
  }

  BOOL bOk = CreateFlowLayoutPanel(panelName, &rcFinal);
  if (bOk == FALSE)
  {
    return FALSE;
  }

  if ( setAsChildren )
  {
    CPanel * pPanel = FindPanelByName(&root, panelName);
    for(int i = 0; i < parrID->GetCount(); i++)
    {
      if (FindPanelByName(&root, IdToName(parrID->GetAt(i))) != NULL)  
      {
        bOk = root.RemoveChild(pPanel);
         ASSERT( bOk );
        delete pPanel;
        return FALSE;
      }
      CUIPanel * pUIPanel = GetUIPanel(parrID->GetAt(i));
      ASSERT( pUIPanel != NULL);
      bOk = pPanel->AddChild( pUIPanel );
       ASSERT( bOk );
    }
  }
  return TRUE;
}

BOOL CWndResizer::CreatePanel(LPCTSTR panelName, const CRect * prcPanel)
{
  if (FindPanelByName(&root, panelName) != NULL)  
  {
    return FALSE;
  }

  CPanel * pPanel = new CPanel(prcPanel);
  pPanel->Name = panelName;
  return root.AddChild(pPanel);
 
}
BOOL CWndResizer::CreatePanel(LPCTSTR panelName, const CUIntArray * parrID, BOOL setAsChildren)
{
  ASSERT(m_pHookedWnd != NULL);

  CRect rcFinal(0, 0, 0, 0);
  for(int i = 0; i < parrID->GetCount(); i++)
  {
    CRect rc(0, 0, 0, 0);
    m_pHookedWnd->GetDlgItem(parrID->GetAt(i))->GetWindowRect(&rc);
    m_pHookedWnd->ScreenToClient(&rc);
    rcFinal.UnionRect(&rcFinal, &rc);
  }

  BOOL bOk = CreatePanel(panelName, &rcFinal);
  if (bOk == FALSE)
  {
    return FALSE;
  }

  if ( setAsChildren )
  {
    CPanel * pPanel = FindPanelByName(&root, panelName);
    for(int i = 0; i < parrID->GetCount(); i++)
    {
      if (FindPanelByName(&root, IdToName(parrID->GetAt(i))) != NULL)  
      {
        bOk = root.RemoveChild(pPanel);
         ASSERT( bOk );
        delete pPanel;
        return FALSE;
      }
      CUIPanel * pUIPanel = GetUIPanel(parrID->GetAt(i));
      ASSERT( pUIPanel != NULL);
      bOk = pPanel->AddChild( pUIPanel );
       ASSERT( bOk );
    }
  }
  return TRUE;
}

CPanel * CWndResizer::FindPanelByName(CPanel * pRoot, LPCTSTR name)
{
  if (CString(name).GetLength() == 0)
  {
    return NULL;
  }

  if (pRoot == NULL )
  {
    return NULL;
  }

  if (pRoot->Name.CompareNoCase(name) == 0 )
  {
    return pRoot;
  }
  else
  {
    POSITION pos = pRoot->Children.GetHeadPosition();
    while(pos != NULL)
    {
      CPanel * pChild = pRoot->Children.GetNext(pos);
      CPanel * pFound = FindPanelByName(pChild, name);
      if (pFound != NULL )
      {
        return pFound;
      }
    }
  }
  
  return NULL;
}
void CWndResizer::GetUIPanels(CPanel * pRoot, CPanelList * pList, BOOL bOle)
{
  if (pRoot == NULL )
  {
    return ;
  }

  CUIPanel * pUIPanel = dynamic_cast<CUIPanel *> ( pRoot);

  if (pUIPanel != NULL && pUIPanel->m_bOle == bOle)
  {
    pList->AddTail( pRoot );
  }

  // try the childreen
  POSITION pos = pRoot->Children.GetHeadPosition();
  while(pos != NULL)
  {
    CPanel * pChild = pRoot->Children.GetNext(pos);
    GetUIPanels(pChild, pList, bOle);

  }
  
}

void CWndResizer::GetVisualPanels(CPanel * pRoot, CPanelList * pList)
{
  if (pRoot == NULL )
  {
    return ;
  }

  CVisualPanel * pUIPanel = dynamic_cast<CVisualPanel *> ( pRoot);

  if (pUIPanel != NULL)
  {
    pList->AddTail( pRoot );
  }

  // try the childreen
  POSITION pos = pRoot->Children.GetHeadPosition();
  while(pos != NULL)
  {
    CPanel * pChild = pRoot->Children.GetNext(pos);
    GetVisualPanels(pChild, pList);
  }  
}


CPanel * CWndResizer::FindSplitterFromPoint(CPanel * pRoot, CPoint point)
{  
  if (pRoot == NULL )
  {
    return NULL;
  }

  CSpitterPanel * pSpitterPanel = dynamic_cast<CSpitterPanel *>(pRoot);

  if (pSpitterPanel != NULL && pRoot->PtInRect(point) == TRUE )
  {
    CSplitContainer * pContainer = (CSplitContainer *)pRoot->Parent;
    if (!pContainer->GetIsSplitterFixed())
    {
      CPoint ptScreen = point;
      m_pHookedWnd->ClientToScreen(&ptScreen);
      HWND hWndFromPoint = ::WindowFromPoint(ptScreen);
      if (m_pHookedWnd->m_hWnd == hWndFromPoint)
      {
        return pRoot;
      }
    }
  }

  // try the childreen
  POSITION pos = pRoot->Children.GetHeadPosition();
  while(pos != NULL)
  {
    CPanel * pChild = pRoot->Children.GetNext(pos);
    CPanel * pFound = FindSplitterFromPoint(pChild, point);
    if (pFound != NULL )
    {
      return pFound;
    }
  }
  
  
  return NULL;
}

CString CWndResizer::IdToName(UINT uID)
{
  CString sName;
  sName.Format(_T("%d"), uID);
  return sName;
}

CUIPanel * CWndResizer::CreateUIPanel(UINT uID)
{
  ASSERT(m_pHookedWnd != NULL);
  CWnd * pWnd = m_pHookedWnd->GetDlgItem(uID);

  if ( pWnd == NULL )
  {
    return NULL;
  }
  CRect rc(0, 0, 0, 0);
  pWnd->GetWindowRect( &rc );  
  m_pHookedWnd->ScreenToClient( &rc );

  CUIPanel * pPanel = new CUIPanel(&rc, uID);
  pPanel->Name = IdToName(uID);
  return pPanel ;
}

CUIPanel * CWndResizer::GetUIPanel(UINT uID)
{
  CUIPanel * pPanel = NULL;
  if ((pPanel = (CUIPanel *)FindPanelByName(&root, IdToName(uID))) == NULL)  
  {
    pPanel = CreateUIPanel(uID);
    if (pPanel != NULL)
    {
      root.AddChild( pPanel );
    }
  }
  return pPanel;
}

BOOL CWndResizer::InvokeOnResized()
{
  ASSERT(m_pHookedWnd != NULL);

  OnSize(0, 0, 0);
  return TRUE;
}


CString CWndResizer::GetDebugInfo()
{
  ASSERT(m_pHookedWnd != NULL);

  CString sInfo;
  CString sIndent;

  GetDebugInfo(&root, sInfo, sIndent);

  return sInfo;
}
void CWndResizer::GetDebugInfo(CPanel * pRoot, CString & info, CString indent)
{
  if (pRoot == NULL )
  {
    return ;
  }

  info.Append(_T("\n"));
  info.Append(indent);
  info.Append(pRoot->ToString() );

  indent.Append(_T("  "));
  for(int i = 0; i < pRoot->Children.GetCount(); i++)
  {
    CPanel * pChild = pRoot->Children.GetAt(pRoot->Children.FindIndex(i));
    GetDebugInfo(pChild, info, indent);
  }
  
}


/////////////////////////////  CPanel
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
CPanel::CPanel() : CRect(0, 0, 0, 0)
{
  Init();
}
CPanel::CPanel(const CRect * prc) : CRect(prc)
{
  Init();
}
void CPanel::Init()
{
  Parent = NULL;
  LeftOffset = 0;
  TopOffset = 0;
  RightOffset = 0;
  BottomOffset = 0; 
  MinSize.SetSize(10, 10);
  MaxSize.SetSize(100000, 100000);
  Anchor =(ANCHOR_LEFT | ANCHOR_TOP);  
  Dock = DOCK_NONE;
}

CPanel::~CPanel()
{
  while(Children.GetCount() > 0 )
  {
    delete Children.RemoveHead();
  }
}
void CPanel::OnResized()
{
  BOOL bOk = FALSE;
  CRect rcEmpty(this);  // available area for docking.  ininitally it is the entire area

  POSITION pos = Children.GetHeadPosition();
  while(pos != NULL)
  {
    CPanel * pChild = Children.GetNext(pos);    
    
    if (pChild->Dock != DOCK_NONE)
    {
      switch(pChild->Dock)
      {
      case DOCK_LEFT:
        pChild->SetRect(rcEmpty.left, rcEmpty.top, rcEmpty.left + pChild->Width(), rcEmpty.bottom);
        bOk = rcEmpty.SubtractRect(&rcEmpty, pChild);
        // ASSERT( bOk );
        break;
      case DOCK_TOP:
        pChild->SetRect(rcEmpty.left, rcEmpty.top, rcEmpty.right, rcEmpty.top + pChild->Height());
        bOk = rcEmpty.SubtractRect(&rcEmpty, pChild);
        // ASSERT( bOk );
        break;
      case DOCK_RIGHT:
        pChild->SetRect(rcEmpty.right - pChild->Width(), rcEmpty.top, rcEmpty.right, rcEmpty.bottom);
        bOk = rcEmpty.SubtractRect(&rcEmpty, pChild);
        // ASSERT( bOk );
        break;
      case DOCK_BOTTOM:
        pChild->SetRect(rcEmpty.left, rcEmpty.bottom - pChild->Height(), rcEmpty.right, rcEmpty.bottom);
        bOk = rcEmpty.SubtractRect(&rcEmpty, pChild);
        // ASSERT( bOk );
        break;
      case DOCK_FILL:
        pChild->SetRect(rcEmpty.left, rcEmpty.top, rcEmpty.right, rcEmpty.bottom);
        break;
      }
      pChild->OnResized();

      // if docking is in action, then we igonre anchor, therefore we continue
      continue;
    }

    CRect rc(0, 0, 0, 0);
    if ((pChild->Anchor & ANCHOR_HORIZONTALLY_CENTERED) ==  ANCHOR_HORIZONTALLY_CENTERED )
    {
      rc.left = this->left + ((int)( (this->Width() - pChild->Width()) /  2));
      rc.right = rc.left + pChild->Width();

      BOOL bReposition = FALSE;
      if (pChild->MinSize.cx > rc.Width() )
      {
        bReposition = TRUE;
        rc.right = rc.left + pChild->MinSize.cx;
      }
      if (pChild->MaxSize.cx < rc.Width() )
      {
        bReposition = TRUE;
        rc.right = rc.left + pChild->MaxSize.cx;
      }

      if (bReposition)
      {
        int nWidth = rc.Width();
        rc.left = (int)( (this->Width() - nWidth) /  2) ;
        rc.right = rc.left + nWidth;
      }
    }
    else if ((pChild->Anchor & ANCHOR_HORIZONTALLY) ==  ANCHOR_HORIZONTALLY )
    {
      rc.left = this->left + pChild->LeftOffset;
      rc.right = this->right - pChild->RightOffset;

      // we will be left anchor if minsize or maxsize does not match
      // (giving ANCHOR_LEFT priority over ANCHOR_RIGHT)
      if ((pChild->Anchor & ANCHOR_PRIORITY_RIGHT) == ANCHOR_PRIORITY_RIGHT)
      {
        if (pChild->MinSize.cx > rc.Width() )
        {
          rc.left = rc.right - pChild->MinSize.cx;
        }
        if (pChild->MaxSize.cx < rc.Width() )
        {
          rc.left = rc.right - pChild->MaxSize.cx;
        }

      }
      else
      {
        if (pChild->MinSize.cx > rc.Width() )
        {
          rc.right = rc.left + pChild->MinSize.cx;
        }
        if (pChild->MaxSize.cx < rc.Width() )
        {
          rc.right = rc.left + pChild->MaxSize.cx;
        }
      }
    }
    else if ((pChild->Anchor & ANCHOR_RIGHT) ==  ANCHOR_RIGHT )
    {
      rc.right = this->right - pChild->RightOffset;     
      rc.left = rc.right - pChild->Width();

      if (pChild->MinSize.cx > rc.Width() )
      {
        rc.left = rc.right - pChild->MinSize.cx;
      }
      if (pChild->MaxSize.cx < rc.Width() )
      {
        rc.left = rc.right - pChild->MaxSize.cx;
      }
    }
    else if ((pChild->Anchor & ANCHOR_LEFT) == ANCHOR_LEFT )
    {
      rc.left = this->left + pChild->LeftOffset;
      rc.right = rc.left + pChild->Width();   

      if (pChild->MinSize.cx > rc.Width() )
      {
        rc.right = rc.left + pChild->MinSize.cx;
      }
      if (pChild->MaxSize.cx < rc.Width() )
      {
        rc.right = rc.left + pChild->MaxSize.cx;
      }
    }
    else
    {
      // it should never be here
      ASSERT( FALSE );
    }


    if ((pChild->Anchor & ANCHOR_VERTICALLY_CENTERED) ==  ANCHOR_VERTICALLY_CENTERED )
    {
      rc.top = this->top + ((int)( (this->Height() - pChild->Height()) /  2));
      rc.bottom = rc.top + pChild->Height();

      BOOL bReposition = FALSE;
      if (pChild->MinSize.cy > rc.Height() )
      {
        bReposition = TRUE;
        rc.bottom = rc.top + pChild->MinSize.cy;
      }
      if (pChild->MaxSize.cy < rc.Height() )
      {
        bReposition = TRUE;
        rc.bottom = rc.top + pChild->MaxSize.cy;
      }

      if (bReposition)
      {
        int nHeight = rc.Height();
        rc.top = (int)( (this->Height() - nHeight) /  2);
        rc.bottom = rc.top + nHeight;
      }
    }
    else if ((pChild->Anchor & ANCHOR_VERTICALLY ) == ANCHOR_VERTICALLY )
    {
      rc.top = this->top + pChild->TopOffset;
      rc.bottom = this->bottom - pChild->BottomOffset;

      if ((pChild->Anchor & ANCHOR_PRIORITY_BOTTOM) == ANCHOR_PRIORITY_BOTTOM)
      {
        if (pChild->MinSize.cy > rc.Height() )
        {
          rc.top = rc.bottom - pChild->MinSize.cy;
        }
        if (pChild->MaxSize.cy < rc.Height() )
        {
          rc.top = rc.bottom - pChild->MaxSize.cy;
        }
      }
      else
      {
        if (pChild->MinSize.cy > rc.Height() )
        {
          rc.bottom = rc.top + pChild->MinSize.cy;
        }
        if (pChild->MaxSize.cy < rc.Height() )
        {
          rc.bottom = rc.top + pChild->MaxSize.cy;
        }
      }
    }
    else if ((pChild->Anchor & ANCHOR_BOTTOM) == ANCHOR_BOTTOM )
    {
      rc.bottom = this->bottom - pChild->BottomOffset;     
      rc.top = rc.bottom - pChild->Height();

      if (pChild->MinSize.cy > rc.Height() )
      {
        rc.top = rc.bottom - pChild->MinSize.cy;
      }
      if (pChild->MaxSize.cy < rc.Height() )
      {
        rc.top = rc.bottom - pChild->MaxSize.cy;
      }
    }
    else if ((pChild->Anchor & ANCHOR_TOP) == ANCHOR_TOP )
    {
      rc.top = this->top + pChild->TopOffset;
      rc.bottom = rc.top + pChild->Height();   

      if (pChild->MinSize.cy > rc.Height() )
      {
        rc.bottom = rc.top + pChild->MinSize.cy;
      }
      if (pChild->MaxSize.cy < rc.Height() )
      {
        rc.bottom = rc.top + pChild->MaxSize.cy;
      }
    }
    else
    {
      // it should never be here
      ASSERT( FALSE );
    }
    pChild->SetRect(rc.TopLeft(), rc.BottomRight());

    pChild->OnResized();

  }
}
BOOL CPanel::AddChild(CPanel * pChild)
{
  if (pChild->Parent != NULL)
  {
    BOOL bOk = pChild->Parent->RemoveChild(pChild);
    if (bOk == FALSE)
    {
      return FALSE;
    }
  }
  pChild->LeftOffset = pChild->left - this->left;
  pChild->TopOffset = pChild->top - this->top;
  pChild->RightOffset = this->right - pChild->right;
  pChild->BottomOffset = this->bottom - pChild->bottom;

  pChild->Parent = this;

  Children.AddTail( pChild );
  return TRUE;
}

BOOL CPanel::RemoveChild(CPanel * pChild)
{
  POSITION pos = Children.Find(pChild);
  if (pos == NULL)
  {
    return FALSE;
  }
  Children.RemoveAt(pos);
  return TRUE;
  
}

BOOL CPanel::SetMinSize(CSize & size)
{  
  if (MaxSize.cx < size.cx)  
  {
    return FALSE;
  }
  if (MaxSize.cy < size.cy)
  {
    return FALSE;
  }

  MinSize = size;
  return TRUE;
}
BOOL CPanel::SetMaxSize(CSize & size)
{
  if (MinSize.cx > size.cx)  
  {
    return FALSE;
  }
  if (MinSize.cy > size.cy)
  {
    return FALSE;
  }

  MaxSize = size;
  return TRUE;
}

BOOL CPanel::SetAnchor(UINT anchor)
{
  if ((anchor & ANCHOR_VERTICALLY_CENTERED) <= 0 )
  {
    if ((anchor & ANCHOR_TOP) <= 0 )
    {
      if ((anchor & ANCHOR_BOTTOM) <= 0 )
      {
        anchor |= ANCHOR_TOP;  // default
      }
    }
  }

  if ((anchor & ANCHOR_HORIZONTALLY_CENTERED) <= 0 )
  {
    if ((anchor & ANCHOR_LEFT) <= 0 )
    {
      if ((anchor & ANCHOR_RIGHT) <= 0 )
      {
        anchor |= ANCHOR_LEFT; // default
      }
    }
  }
  Anchor = anchor;

  return TRUE;
}
CString CPanel::ToString()
{
  CString sFormat(_T("Name(%s), Type(%s), Anchor(%d), Size(w:%d, h:%d), Area(l:%d, t:%d, r:%d, b:%d), MinSize(w:%d, h:%d), MaxSize(w:%d, h:%d), Parent(%s), ChildrenCount(%d)"));

  CString sTo;
  sTo.Format(sFormat, Name, GetTypeName(), Anchor, Width(), Height(), left, top, right, bottom, MinSize.cx, MinSize.cy, MaxSize.cx, MaxSize.cy, (Parent == NULL? _T("NULL") : Parent->Name), Children.GetCount());
  return sTo;
}
CString CPanel::GetTypeName()
{
  return _T("CPanel");
}

CWnd * CPanel::GetHookedWnd()
{
  if (Parent != NULL)
  {
    return Parent->GetHookedWnd();
  }
  return NULL;
}

/////////////////////////////  CSplitContainer
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
CSplitContainer::CSplitContainer(CSplitPanel * pPanelA, CSplitPanel * pPanelB, SplitterOrientation type) : CPanel()
{
  m_IsSplitterFixed = FALSE;
  m_FixedPanel = 0;

  m_pPanelA = NULL;
  m_pPanelB = NULL;
  m_pSplitter = NULL;

  m_Orientation = type;
  m_pPanelA = pPanelA;
  m_pPanelB = pPanelB;
  UnionRect(m_pPanelA, m_pPanelB);  

  CRect rc(0, 0, 0, 0);  
  GetSplitArea(&rc);
  m_pSplitter = new CSpitterPanel(&rc, type);
  m_pSplitter->m_pGrippePanel->m_bVisible = FALSE;


  if (m_Orientation == SPLIT_CONTAINER_H)
  {
    m_pPanelA->Anchor = (ANCHOR_LEFT | ANCHOR_TOP | ANCHOR_BOTTOM);
    m_pPanelB->Anchor = (ANCHOR_RIGHT | ANCHOR_TOP | ANCHOR_BOTTOM);
  }
  else
  {
    m_pPanelA->Anchor = (ANCHOR_LEFT | ANCHOR_TOP | ANCHOR_RIGHT);
    m_pPanelB->Anchor = (ANCHOR_LEFT | ANCHOR_BOTTOM | ANCHOR_RIGHT);
  }

  m_nSplitterSize = GetSplitterSize(m_pPanelA, m_pPanelB);

  BOOL bOk = AddChild(m_pPanelA);
  ASSERT( bOk);

  bOk = AddChild(m_pSplitter);
  ASSERT( bOk);

  bOk = AddChild(m_pPanelB);
  ASSERT( bOk);

  UpdateRatio();
}

CSplitContainer::~CSplitContainer()
{

}

void CSplitContainer::OnResized()
{
  CPanel::OnResized();
 
  if (m_Orientation == SPLIT_CONTAINER_H)
  {
    if (Width() < MinSize.cx)
    {
      return;
    }

    if (m_FixedPanel == 1 ) // left panel is fixed
    {
      m_pPanelB->left = m_pPanelA->right + m_nSplitterSize;

      if (m_pPanelB->MinSize.cx > m_pPanelB->Width() )
      {
        m_pPanelB->left = m_pPanelB->right - m_pPanelB->MinSize.cx;
        m_pPanelA->right = m_pPanelB->left - m_nSplitterSize;
      }
    }
    else if (m_FixedPanel == 2 )  // right panel is fixed
    {
      m_pPanelA->right = m_pPanelB->left - m_nSplitterSize;

      if (m_pPanelA->MinSize.cx > m_pPanelA->Width() )
      {
        m_pPanelA->right = m_pPanelA->left + m_pPanelA->MinSize.cx;
        m_pPanelB->left = m_pPanelA->right + m_nSplitterSize;
      }
    }
    else
    {
      m_pPanelA->right = (LONG) ((double)m_pPanelA->left + ((double)this->Width() * m_nRatio));

      if (m_pPanelA->MinSize.cx > m_pPanelA->Width() )
      {
        m_pPanelA->right = m_pPanelA->left + m_pPanelA->MinSize.cx;
      }

      m_pPanelB->left = m_pPanelA->right + m_nSplitterSize;

      if (m_pPanelB->MinSize.cx > m_pPanelB->Width() )
      {
        m_pPanelB->left = m_pPanelB->right - m_pPanelB->MinSize.cx;
        m_pPanelA->right = m_pPanelB->left - m_nSplitterSize;
      }
    }

  }
  else /*if (m_Orientation == SPLIT_CONTAINER_V)*/
  {
    if (Height() < MinSize.cy)
    {
      return;
    }

    if (m_FixedPanel == 1 ) // top panel is fixed
    {
      m_pPanelB->top = m_pPanelA->bottom + m_nSplitterSize;

      if (m_pPanelB->MinSize.cy > m_pPanelB->Height() )
      {
        m_pPanelB->top = m_pPanelB->bottom - m_pPanelB->MinSize.cy;
        m_pPanelA->bottom = m_pPanelB->top - m_nSplitterSize;
      }
    }
    else if (m_FixedPanel == 2 )  // bottom panel is fixed
    {
      m_pPanelA->bottom = m_pPanelB->top - m_nSplitterSize;

      if (m_pPanelA->MinSize.cy > m_pPanelA->Height() )
      {
        m_pPanelA->bottom = m_pPanelA->top + m_pPanelA->MinSize.cy;
        m_pPanelB->top = m_pPanelA->bottom + m_nSplitterSize;
      }
    }
    else
    {
      m_pPanelA->bottom = (LONG) ((double)m_pPanelA->top + ((double)this->Height() * m_nRatio));

      if (m_pPanelA->MinSize.cy > m_pPanelA->Height() )
      {
        m_pPanelA->bottom = m_pPanelA->top + m_pPanelA->MinSize.cy;
      }

      m_pPanelB->top = m_pPanelA->bottom + m_nSplitterSize;

      if (m_pPanelB->MinSize.cy > m_pPanelB->Height() )
      {
        m_pPanelB->top = m_pPanelB->bottom - m_pPanelB->MinSize.cy;
        m_pPanelA->bottom = m_pPanelB->top - m_nSplitterSize;
      }
    }


  }

  GetSplitArea(m_pSplitter);
  m_pPanelA->OnResized();
  m_pPanelB->OnResized();
  m_pSplitter->OnResized();

}
void CSplitContainer::SetSplitterPosition(int leftOfSplitter)
{ 

  short nFixedPanel = m_FixedPanel;
  m_FixedPanel = 0;
  if (m_Orientation == SPLIT_CONTAINER_H )
  {    
    m_pPanelA->right = leftOfSplitter;
    m_pPanelB->left = m_pPanelA->right + m_nSplitterSize;
  }
  else
  {
    m_pPanelA->bottom = leftOfSplitter;
    m_pPanelB->top = m_pPanelA->bottom + m_nSplitterSize;
  }
  UpdateRatio();

  OnResized();

  UpdateRatio();
  m_FixedPanel = nFixedPanel;

}
int CSplitContainer::GetSplitterPosition()
{ 
  if (m_Orientation == SPLIT_CONTAINER_H )
  {    
    return m_pPanelA->right;
  }
  else
  {
    return m_pPanelA->bottom;
  }
}
BOOL CSplitContainer::AddChild(CPanel * prc)
{
  if (Children.GetCount() == 3)
  {
    return FALSE;
  }
  return CPanel::AddChild(prc);

}
BOOL CSplitContainer::RemoveChild(CPanel * prc)
{
  return FALSE; // cannot remove child from split container
}

void CSplitContainer::GetSplitArea(CRect * pSplitterPanel)
{

  if (m_Orientation == SPLIT_CONTAINER_H)
  {
    pSplitterPanel->left = m_pPanelA->right;
    pSplitterPanel->top = this->top;
    pSplitterPanel->right = m_pPanelB->left;
    pSplitterPanel->bottom = this->bottom;
  }
  else // vertical
  {
    pSplitterPanel->left = this->left;
    pSplitterPanel->top = m_pPanelA->bottom;
    pSplitterPanel->right = this->right;
    pSplitterPanel->bottom = m_pPanelB->top;
  }  
}
int CSplitContainer::GetSplitterSize(CPanel * m_pPanelA, CPanel * m_pPanelB)
{
  if (m_Orientation == SPLIT_CONTAINER_H)
  {
    int nWidth = m_pPanelB->left - m_pPanelA->right;
    return nWidth;
  }
  else // vertical
  {
    int nHeight = m_pPanelB->top - m_pPanelA->bottom;
    return nHeight;
  }  
}




void CSplitContainer::UpdateRatio()
{

  if (m_Orientation == SPLIT_CONTAINER_H )
  {    
    m_nRatio = (double)m_pPanelA->Width() / (double)this->Width();
  }
  else
  {
    m_nRatio = (double)m_pPanelA->Height() / (double)this->Height();
  }

}

CSplitContainer *  CSplitContainer::Create(CPanel * pPanelA, CPanel * pPanelB)
{
  CSplitPanel * pSplitPanelA =  dynamic_cast<CSplitPanel *>( pPanelA );
  if (pSplitPanelA != NULL)
  {
    return NULL;  // already a part of a CSplitContainer
  }

  CSplitPanel * pSplitPanelB =  dynamic_cast<CSplitPanel *>( pPanelB );
  if (pSplitPanelB != NULL)
  {
    return NULL; // already a part of a CSplitContainer
  }

  CRect rcDest(0, 0, 0, 0);
  SplitterOrientation orien = SPLIT_CONTAINER_H;

  if (::IntersectRect(&rcDest, pPanelA, pPanelB) == TRUE) // invalid spliter container, a spliter continer's two panel cannot intersect each other
  {
    return NULL;
  } 


  if (pPanelA->right < pPanelB->left)
  {
      orien = SPLIT_CONTAINER_H;    
  }
  else if (pPanelA->bottom < pPanelB->top)
  {
      orien =  SPLIT_CONTAINER_V;    
  }
  else
  {
    return NULL;
  }
  if (pPanelA->Parent != NULL)
  {
    if (pPanelA->Parent->RemoveChild( pPanelA ) == FALSE)
    {
      return NULL;
    }
  }
  if (pPanelB->Parent != NULL)
  {
    if (pPanelB->Parent->RemoveChild( pPanelB ) == FALSE)
    {
      return NULL;
    }
  }

  pSplitPanelA = new CSplitPanel( pPanelA );  
  pSplitPanelB = new CSplitPanel( pPanelB );  


  CSplitContainer * pSpliter = new CSplitContainer(pSplitPanelA, pSplitPanelB, orien);
  return pSpliter;

}

CString CSplitContainer::GetTypeName()
{
  return _T("CSplitContainer");
}

void CSplitContainer::SetFixedPanel(short nFixedPanel /* 1=left/top; 2=right/bototm; other=no fixed panel */)
{
  m_FixedPanel = nFixedPanel;
}
short CSplitContainer::GetFixedPanel()
{
  return m_FixedPanel;
}
void CSplitContainer::SetIsSplitterFixed(BOOL bFixed)
{
  m_IsSplitterFixed = bFixed;
}
BOOL CSplitContainer::GetIsSplitterFixed()
{
  return m_IsSplitterFixed;
}
void CSplitContainer::SetShowSplitterGrip(BOOL bShow)
{
  m_pSplitter->m_pGrippePanel->m_bVisible = bShow;
}
BOOL CSplitContainer::GetShowSplitterGrip()
{
  return m_pSplitter->m_pGrippePanel->m_bVisible;
}


/////////////////////////////  CRootPanel
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
CRootPanel::CRootPanel() : CPanel()
{
  m_pHookWnd = NULL;
}
CRootPanel::~CRootPanel()
{

}
CWnd * CRootPanel::GetHookedWnd()
{
  return m_pHookWnd;
}
CString CRootPanel::GetTypeName()
{
  return _T("CRootPanel");
}
/////////////////////////////  CUIPanel
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
CUIPanel::CUIPanel(const CRect * prc, UINT uID) : CPanel(prc)
{
  m_uID = uID;
  m_bOle = FALSE;
}
CUIPanel::~CUIPanel()
{

}
CString CUIPanel::GetTypeName()
{
  return _T("CUIPanel");
}

/////////////////////////////  CVisualPanel
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
CVisualPanel::CVisualPanel() : CPanel()
{
  m_bVisible = FALSE;
  m_rcPrev.SetRect(0, 0, 0, 0);
}
CVisualPanel::CVisualPanel(const CRect * prc) : CPanel(prc)
{
  m_bVisible = FALSE;
  m_rcPrev.SetRect(this->left, this->top, this->right, this->bottom);
}
CVisualPanel::~CVisualPanel()
{


}
void CVisualPanel::Draw(CDC * pDC)
{

}
CString CVisualPanel::GetTypeName()
{
  return _T("CVisualPanel");
}
void CVisualPanel::OnResized()
{
  CWnd * pWnd = NULL;
  if ((pWnd = GetHookedWnd()) != NULL)
  {
    pWnd->InvalidateRect( &m_rcPrev, FALSE );
    pWnd->InvalidateRect( this, FALSE );
  }
  m_rcPrev.SetRect(this->left, this->top, this->right, this->bottom);
}

/////////////////////////////  CGripperPanel
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
enum SCROLLBARPARTS {
	SBP_ARROWBTN = 1,
	SBP_THUMBBTNHORZ = 2,
	SBP_THUMBBTNVERT = 3,
	SBP_LOWERTRACKHORZ = 4,
	SBP_UPPERTRACKHORZ = 5,
	SBP_LOWERTRACKVERT = 6,
	SBP_UPPERTRACKVERT = 7,
	SBP_GRIPPERHORZ = 8,
	SBP_GRIPPERVERT = 9,
	SBP_SIZEBOX = 10,
};
CGripperPanel::CGripperPanel() : CVisualPanel()
{
  m_hTheme = NULL;
  m_iPartId = SBP_SIZEBOX;
  m_iStateId = 5; //SZB_HALFBOTTOMRIGHTALIGN;
  m_sClassName = _T("SCROLLBAR");
}
CGripperPanel::CGripperPanel(const CRect * prc) : CVisualPanel(prc)
{
  m_hTheme = NULL;
  m_iPartId = SBP_SIZEBOX;
  m_iStateId = 5; //SZB_HALFBOTTOMRIGHTALIGN;
  m_sClassName = _T("SCROLLBAR");
}
CGripperPanel::~CGripperPanel()
{
  if (m_hTheme != NULL)
  {
    HRESULT lres = ::CloseThemeData(m_hTheme);
    ASSERT(SUCCEEDED(lres) == TRUE);  
    m_hTheme = NULL;
  }
}
void CGripperPanel::Draw(CDC * pDC)
{
  if (m_hTheme == NULL)
  {
    CWnd * pHookedWnd = GetHookedWnd();
    if (pHookedWnd == NULL)
    {
      return;
    }
    m_hTheme = ::OpenThemeData(pHookedWnd->m_hWnd, m_sClassName.AllocSysString());
  }

  if (m_hTheme == NULL)
  {
    BOOL bOk = pDC->DrawFrameControl(this, DFC_SCROLL, DFCS_SCROLLSIZEGRIP );
     ASSERT( bOk );
  }
  else
  {
    HRESULT lres = ::DrawThemeBackground(m_hTheme, pDC->m_hDC, m_iPartId, m_iStateId, this, this);
    ASSERT(SUCCEEDED(lres) == TRUE);
  }
}

CString CGripperPanel::GetTypeName()
{
  return _T("CGripperPanel");
}

/////////////////////////////  CSplitterGripperPanel
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////

CSplitterGripperPanel::CSplitterGripperPanel(SplitterOrientation type) : CVisualPanel()
{
  m_OrienType = type;
}
CSplitterGripperPanel::~CSplitterGripperPanel()
{

}
void CSplitterGripperPanel::Draw(CDC * pDC)
{
  CPen penDark(PS_SOLID, 1, ::GetSysColor(COLOR_3DSHADOW));
  CPen penWhite(PS_SOLID, 1, RGB(255, 255, 255));

  if (m_OrienType == SPLIT_CONTAINER_H )
  {
    CPen * pOrigPen = pDC->SelectObject(&penWhite);    

    CRect rc(0, 0, 0, 0);
    rc.SetRect(left + 1, top + 1, left + 3, top + 3); 
    while(rc.bottom <= bottom)
    {
      pDC->Rectangle(&rc);
      rc.OffsetRect(0, 4);
   }

    pDC->SelectObject(&penDark);
    rc.SetRect(left, top, left + 2, top + 2);
    while(rc.bottom <= bottom)
    {
      pDC->Rectangle(&rc);
     rc.OffsetRect(0, 4);
   }

    pDC->SelectObject(pOrigPen);

  }
  else
  {
    CPen * pOrigPen = pDC->SelectObject(&penWhite);    

    CRect rc(0, 0, 0, 0);
    rc.SetRect(left + 1, top + 1, left + 3, top + 3); 
    while(rc.right <= right)
    {
      pDC->Rectangle(&rc);
      rc.OffsetRect(4, 0);
    }

    pDC->SelectObject(&penDark);
    rc.SetRect(left, top, left + 2, top + 2);
    while(rc.right <= right)
    {
      pDC->Rectangle(&rc);
      rc.OffsetRect(4, 0);
    }

    pDC->SelectObject(pOrigPen);
  } 
}

CString CSplitterGripperPanel::GetTypeName()
{
  return _T("CSplitterGripperPanel");
}


/////////////////////////////  CSpitterPanel
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
CSpitterPanel::CSpitterPanel(const CRect * prc, SplitterOrientation type) : CPanel(prc)
{
  m_OrienType = type;
  m_pGrippePanel = NULL;

  if (m_pGrippePanel == NULL)
  {
    m_pGrippePanel = new CSplitterGripperPanel(type);
    if (m_OrienType == SPLIT_CONTAINER_H )
    {
      m_pGrippePanel->SetRect(0, 0, 3, 12);
    }
    else
    {
      m_pGrippePanel->SetRect(0, 0, 12, 3);
    }
    m_pGrippePanel->SetAnchor ( ANCHOR_HORIZONTALLY_CENTERED | ANCHOR_VERTICALLY_CENTERED );
    m_pGrippePanel->SetMinSize(CSize(2,2));
    BOOL bOk = AddChild(m_pGrippePanel);
    ASSERT( bOk);
  }
}
CSpitterPanel::CSpitterPanel(SplitterOrientation type) : CPanel()
{
  m_OrienType = type;
  m_pGrippePanel = NULL;

}

CSpitterPanel::~CSpitterPanel()
{

}


CString CSpitterPanel::GetTypeName()
{
  return _T("CSpitterPanel");
}
/////////////////////////////  CSpitPanel
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
CSplitPanel::CSplitPanel(CPanel * pPanel) : CPanel(pPanel)
{
  pPanel->LeftOffset = 0;
  pPanel->TopOffset = 0;
  pPanel->RightOffset = 0;
  pPanel->BottomOffset = 0;
  pPanel->Anchor = ANCHOR_ALL;
  Name = pPanel->Name;
  pPanel->Name = _T("");
  m_pOriginalPanel = pPanel;
  MaxSize = pPanel->MaxSize;
  MinSize = pPanel->MinSize;
  Children.AddTail( pPanel );
}

CSplitPanel::~CSplitPanel()
{

}

BOOL CSplitPanel::SetAnchor(UINT anchor)
{
  return FALSE;
}

BOOL CSplitPanel::AddChild(CPanel * prc)
{
  return m_pOriginalPanel->AddChild(prc);
}
BOOL CSplitPanel::RemoveChild(CPanel * prc)
{
  return m_pOriginalPanel->RemoveChild(prc);
}


CString CSplitPanel::GetTypeName()
{
  return _T("CSplitPanel");
}

/////////////////////////////  CFlowLayoutPanel
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
CFlowLayoutPanel::CFlowLayoutPanel() : CPanel()
{
  m_nItemSpacingX = 0;
  m_nItemSpacingY = 0;
  m_nFlowDirection = LEFT_TO_RIGHT;
}
CFlowLayoutPanel::CFlowLayoutPanel(const CRect * prc) : CPanel(prc)
{
  m_nItemSpacingX = 0;
  m_nItemSpacingY = 0;
  m_nFlowDirection = LEFT_TO_RIGHT;
}
CFlowLayoutPanel::~CFlowLayoutPanel()
{

}
void CFlowLayoutPanel::OnResized()
{
  int max = 0; // maximimum height of a item in the row in case of left-to-right, otherwise maximum width of a item
  int x = left;
  int y = top;
  POSITION pos = Children.GetHeadPosition();

  // first one will be at the top-left corner, no matter what
  if (pos != NULL)
  {
    CPanel * pPanel = Children.GetNext(pos);
    pPanel->MoveToXY(x, y);
    pPanel->OnResized();

    if (m_nFlowDirection == LEFT_TO_RIGHT)
    {
      x += pPanel->Width() + m_nItemSpacingX;
      max = (pPanel->Height() > max ? pPanel->Height() : max);
    }
    else
    {
      y += pPanel->Height() + m_nItemSpacingY;
      max = (pPanel->Width() > max ? pPanel->Width() : max);
    }
  }


  if (m_nFlowDirection == LEFT_TO_RIGHT)
  {
    while(pos != NULL)
    {
      CPanel * pPanel = Children.GetNext(pos);
      // check to see if it is to wrap
      if (x + pPanel->Width() > right)
      {
        x = left;
        y += (max + m_nItemSpacingY);
        max = 0;
      }

      pPanel->MoveToXY(x, y);
      pPanel->OnResized();

      x += pPanel->Width() + m_nItemSpacingX;
      max = (pPanel->Height() > max ? pPanel->Height() : max);
    }
  }
  else
  {
    while(pos != NULL)
    {
      CPanel * pPanel = Children.GetNext(pos);
      // check to see if it is to wrap
      if (y + pPanel->Height() > bottom)
      {
        x += (max + m_nItemSpacingX);
        y = top;
        max = 0;
      }

      pPanel->MoveToXY(x, y);
      pPanel->OnResized();

      y += pPanel->Height() + m_nItemSpacingY;
      max = (pPanel->Width() > max ? pPanel->Width() : max);
    }

  }
}
CString CFlowLayoutPanel::GetTypeName()
{
  return _T("CFlowLayoutPanel");

}
void CFlowLayoutPanel::SetFlowDirection(FlowDirection direction)
{
  m_nFlowDirection = direction;
}
FlowDirection CFlowLayoutPanel::GetFlowDirection()
{
  return m_nFlowDirection;
}
void CFlowLayoutPanel::SetItemSpacingX(int nSpace)
{
  m_nItemSpacingX = nSpace;
}
int CFlowLayoutPanel::GetItemSpacingX()
{
  return m_nItemSpacingX;
}
void CFlowLayoutPanel::SetItemSpacingY(int nSpace)
{
  m_nItemSpacingY = nSpace;
}
int CFlowLayoutPanel::GetItemSpacingY()
{
  return m_nItemSpacingY;
}

