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//####COPYRIGHTBEGIN####

//                                                                          

// ----------------------------------------------------------------------------

// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.

//

// This program is part of the eCos host tools.

//

// This program is free software; you can redistribute it and/or modify it 

// under the terms of the GNU General Public License as published by the Free 

// Software Foundation; either version 2 of the License, or (at your option) 

// any later version.

// 

// This program is distributed in the hope that it will be useful, but WITHOUT 

// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 

// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for 

// more details.

// 

// You should have received a copy of the GNU General Public License along with

// this program; if not, write to the Free Software Foundation, Inc., 

// 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

//

// ----------------------------------------------------------------------------

//                                                                          

//####COPYRIGHTEND####

//

//===========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):   sdf

// Contact(s):  sdf

// Date:                1998/08/11

// Version:             0.01

// Purpose:     

// Description: This is the implementation of the extended splitter window class.

// Requires:    

// Provides:    

// See also:    

// Known bugs:  

// Usage:       

//

//####DESCRIPTIONEND####

//

//===========================================================================

#include "stdafx.h"

#include "SplitterWndEx.h"

#ifdef _DEBUG

#define new DEBUG_NEW

#undef THIS_FILE

static char THIS_FILE[] = __FILE__;

#endif

////////////////////////////////////////////////////////////////////////////

//

// CSplitterWndEx

CSplitterWndEx::CSplitterWndEx():

        m_fRowColumnRatio(0.0)

{

        m_bParentHide=FALSE;

        m_pwnd1=m_pwnd2=NULL;

}

BEGIN_MESSAGE_MAP(CSplitterWndEx, CSplitterWnd)

//{{AFX_MSG_MAP(CSplitterWndEx)

        ON_WM_MOUSEWHEEL()

        ON_WM_SIZE()

        //}}AFX_MSG_MAP

END_MESSAGE_MAP()

void CSplitterWndEx::ShowPane(CWnd * pWnd,BOOL bShow)

{

        if(m_pwnd1==NULL){

                m_pwnd1=GetPane(0,0);

                m_pwnd2=GetPane(!IsHorizontal(),IsHorizontal());

        }

        ASSERT(pWnd==m_pwnd1 || pWnd==m_pwnd2);

        int &nRowCols=IsHorizontal()?m_nCols:m_nRows;

        if(bShow){

                if(!pWnd->IsWindowVisible()){

                        if(m_bParentHide){

                                ((CSplitterWndEx *)GetParent())->ShowPane(this,TRUE);

                                // Ensure the correct pane reappears

                                if(GetPane(0,0)!=pWnd){

                                        // Need to swap the entries

                                        SwapRowColInfo();

                                }

                                m_bParentHide=FALSE;

                        } else { // maybe nothing to do

                                nRowCols++;

                                if(pWnd==m_pwnd1){

                                        // Need to swap the entries

                                        SwapRowColInfo();

                                }

                        }

                        pWnd->ShowWindow(SW_SHOW);

                }

                if(pWnd==m_pwnd1){

                        m_pwnd1->SetDlgCtrlID(AFX_IDW_PANE_FIRST);

                        m_pwnd2->SetDlgCtrlID(AFX_IDW_PANE_FIRST+(IsHorizontal()?1:16));

                }

        } else {

                if(pWnd->IsWindowVisible()){

                        pWnd->ShowWindow(SW_HIDE);

                        if(nRowCols == 1) {

                                m_bParentHide=TRUE;

                                ((CSplitterWndEx *)GetParent())->ShowPane(this,FALSE);

                        } else {

                                // Both panes currently active

                                int rowActive, colActive;

                                if (GetActivePane(&rowActive, &colActive) != NULL && pWnd==GetPane(rowActive, colActive)){

          int bHorz=IsHorizontal();

                                        SetActivePane((!bHorz)&(rowActive^1), (bHorz)&(colActive^1));

                                }

                                if(pWnd==m_pwnd1){

                                        SwapRowColInfo();

                                        m_pwnd2->SetDlgCtrlID(AFX_IDW_PANE_FIRST);

                                        m_pwnd1->SetDlgCtrlID(AFX_IDW_PANE_FIRST+1);

                                }

                                nRowCols--;

                        }

                }

        }

        RecalcLayout();

}

void CSplitterWndEx::SwapRowColInfo()

{

        CRowColInfo*& pRowColInfo=IsHorizontal()?m_pColInfo:m_pRowInfo;

        // Need to swap the entries

        CRowColInfo save;

        memcpy(&save,&pRowColInfo[0],sizeof CRowColInfo);

        memcpy(&pRowColInfo[0],&pRowColInfo[1],sizeof CRowColInfo);

        memcpy(&pRowColInfo[1],&save,sizeof CRowColInfo);

}

// We do this because the CSplitterWnd implementation assumes both children are derived

// from CScrollView - so here we just let the children handle the message themselves.

BOOL CSplitterWndEx::OnMouseWheel(UINT nFlags, short zDelta, CPoint pt)

{

        return TRUE;

        UNUSED_ALWAYS(nFlags);

        UNUSED_ALWAYS(zDelta);

        UNUSED_ALWAYS(pt);

}

void CSplitterWndEx::OnSize(UINT nType, int cx, int cy)

{

        int &nRowCols=IsHorizontal()?m_nCols:m_nRows;

        CRowColInfo *&RowColInfo=IsHorizontal()?m_pColInfo:m_pRowInfo;

        if(nRowCols>1 && (cx|cy) && m_fRowColumnRatio!=0.0){

                RowColInfo[0].nIdealSize=int(0.5 + m_fRowColumnRatio * double(IsHorizontal()?cx:cy));

        }

        CSplitterWnd::OnSize( nType, cx, cy );

}

void CSplitterWndEx::RecalcLayout()

{

        CSplitterWnd::RecalcLayout();

        CRowColInfo *&RowColInfo=IsHorizontal()?m_pColInfo:m_pRowInfo;

        int &nRowCols=IsHorizontal()?m_nCols:m_nRows;

        if (nRowCols==2 && RowColInfo[0].nCurSize && RowColInfo[1].nCurSize){

                CRect rect;

                GetClientRect(rect);

                m_fRowColumnRatio=double(RowColInfo[0].nCurSize)/double(IsHorizontal()?rect.Width():rect.Height());

        }

}

double CSplitterWndEx::GetSplitPoint()

{

  return m_fRowColumnRatio;

}

void CSplitterWndEx::SetSplitPoint(double fSplit)

{

  m_fRowColumnRatio=fSplit;

  CRect rc;

  GetClientRect(rc);

  OnSize(SIZE_RESTORED,rc.Width(),rc.Height());

}