memdc.h

PW芯片方案Flash ROM烧写程序

//---------------------------------------------------------------------------
// Pixelworks Inc. Company Confidential Strictly Private
//
// $Archive: /PIXWARE/SwTools/GUIBuilder/MemDC.h $
// $Revision: 1.1.1.1 $
// $Author: KevinM $
// $Date: 2003/09/29 18:19:04 $
//
// --------------------------------------------------------------------------
// >>>>>>>>>>>>>>>>>>>>>>>>> COPYRIGHT NOTICE <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
// --------------------------------------------------------------------------
// Copyright 1999-2001(c) Pixelworks Inc.
//
// Pixelworks owns the sole copyright to this software. Under international 
// copyright laws you (1) may not make a copy of this software except for 
// the purposes of maintaining a single archive copy, (2) may not derive
// works herefrom, (3) may not distribute this work to others. These rights 
// are provided for information clarification, other restrictions of rights 
// may apply as well.
//
// This is an unpublished work.
// --------------------------------------------------------------------------
// >>>>>>>>>>>>>>>>>>>>>>>>>>>> WARRANTEE <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
// --------------------------------------------------------------------------
// Pixelworks Inc. MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THE USE OF
// THIS SOFTWARE, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
// THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
// PURPOSE.
// --------------------------------------------------------------------------
//
// The GUIBuilder application has been designed and coded by Jim Becker.
//
/* $Log: MemDC.h,v $
/* Revision 1.1.1.1  2003/09/29 18:19:04  KevinM
/* DEV Initial Checkin
/*
/* Revision 1.1.1.1  2002/11/07 22:07:31  mikeh
/* BUILD Initial creation of project
/*
/* Revision 1.1.1.1  2002/10/15 21:00:48  mikeh
/* DEV Initial creation of SDK 2.2 SPC Release
/*
/* Revision 1.1.1.1  2002/03/12 20:45:19  mikeh
/* no message
/*
/* Revision 1.1  2001/08/23 17:38:45  kevinm
/* CR5402 - Fixed pathname default bug
/*
/* Revision 1.1.1.1  2001/07/09 17:44:46  jimb
/*
/* initial checkin - this is the current GUIBuilder source for 2.1 SPC release.
/*
 * 
 * 2     11/05/99 3:17p Jimb
 * Sweep checkin for Comdex demo
 * 
 * 3     6/14/99 5:50p Jimb
 * Sweep checkin with more 1.8 changes. And changes to every header so log
 * directive works as expected.
 * 
 * 2     6/10/99 6:23p Jimb
 * Sweep checkin flush of everything for 1.8 release.
*/

#if !defined(AFX_MEMDC_H__CA1D3541_7235_11D1_ABBA_00A0243D1382__INCLUDED_)
#define AFX_MEMDC_H__CA1D3541_7235_11D1_ABBA_00A0243D1382__INCLUDED_

#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000
// MemDC.h : header file
//

//////////////////////////////////////////////////
// CMemDC - memory DC
//
// Author: Keith Rule
// Email:  [e-mail]
// Copyright 1996-1997, Keith Rule
//
// You may freely use or modify this code provided this
// Copyright is included in all derived versions.
//
// History - 10/3/97 Fixed scrolling bug.
//                   Added print support.
//           25 feb 98 - fixed minor assertion bug
//
// This class implements a memory Device Context
class CMemDC : public CDC
{
public:
	
	// constructor sets up the memory DC
	CMemDC(CDC* pDC, CRect *pRect = NULL) : CDC()
    {
		ASSERT(pDC != NULL);
		
		m_pDC = pDC;
		m_pOldBitmap = NULL;
        m_bMemDC = !pDC->IsPrinting();
		
        if (m_bMemDC)	// Create a Memory DC
		{
			if( pRect )
				m_rect	= *pRect;
			else
	            pDC->GetClipBox(&m_rect);

            CreateCompatibleDC(pDC);
            m_bitmap.CreateCompatibleBitmap(pDC, m_rect.Width(), m_rect.Height());
			m_pOldBitmap = SelectObject(&m_bitmap);
            SetWindowOrg(m_rect.left, m_rect.top);

			// fill the rectangle with app workspace color to start
			CBrush		brush;
			brush.CreateSolidBrush(::GetSysColor(COLOR_BTNFACE));
			FillRect(&m_rect, &brush);
        }
		else		// Make a copy of the relevent parts of the current DC for printing
		{
            m_bPrinting = pDC->m_bPrinting;
            m_hDC		= pDC->m_hDC;
            m_hAttribDC = pDC->m_hAttribDC;
        }
	}
	
	// Destructor copies the contents of the mem DC to the original DC
	~CMemDC()
    {
		if (m_bMemDC) {	
			// Copy the offscreen bitmap onto the screen.
			m_pDC->BitBlt(m_rect.left, m_rect.top, m_rect.Width(), m_rect.Height(),
				this, m_rect.left, m_rect.top, SRCCOPY);
			
            //Swap back the original bitmap.
            SelectObject(m_pOldBitmap);
		} else {
			// All we need to do is replace the DC with an illegal value,
			// this keeps us from accidently deleting the handles associated with
			// the CDC that was passed to the constructor.
            m_hDC = m_hAttribDC = NULL;
		}
	}
	
	// Allow usage as a pointer
    CMemDC* operator->() {return this;}
	
    // Allow usage as a pointer
    operator CMemDC*() {return this;}

private:
	CBitmap  m_bitmap;		// Offscreen bitmap
    CBitmap* m_pOldBitmap;	// bitmap originally found in CMemDC
    CDC*     m_pDC;			// Saves CDC passed in constructor
    CRect    m_rect;		// Rectangle of drawing area.
    BOOL     m_bMemDC;		// TRUE if CDC really is a Memory DC.
};

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

//{{AFX_INSERT_LOCATION}}
// Microsoft Developer Studio will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_MEMDC_H__CA1D3541_7235_11D1_ABBA_00A0243D1382__INCLUDED_)