wingdc.cpp

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#ifndef WINGDC_IMPLEMENTATION_FILE
#define WINGDC_IMPLEMENTATION_FILE

/*****************************************************************************\
*
* Author: Chris Koeritz
*
*******************************************************************************
* Copyright (c) 1995-$now By Author.  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 is online at:      *
*     http://www.fsf.org/copyleft/gpl.html                                    *
* Please send any updates to: fred@gruntose.com                               *
\*****************************************************************************/

#include "wingdc.h"

#ifdef __WIN32__
WinGDC::WinGDC() { m_hDC = CreateCompatibleDC(GetDC(NIL)); }

WinGDC::~WinGDC() { ::DeleteDC(m_hDC); }

HBITMAP WinGDC::WinGCreateBitmap(BITMAPINFO far *pHeader, void far *far *ppBits)
{ return CreateDIBSection(m_hDC, pHeader, DIB_RGB_COLORS, ppBits, NIL, 0); }

u_int WinGDC::WinGGetDIBColorTable(u_int nStartIndex, u_int nNumberOfEntries,
    RGBQUAD far *pBuffer)
{ return ::GetDIBColorTable(m_hDC, nStartIndex, nNumberOfEntries, pBuffer); }

u_int WinGDC::WinGSetDIBColorTable(u_int nStartIndex, u_int nNumberOfEntries,
    RGBQUAD far *pBuffer)
{ return ::SetDIBColorTable(m_hDC, nStartIndex, nNumberOfEntries, pBuffer); }

bool WinGDC::WinGBitBlt(HDC hdcDest, int nXOriginDest, int nYOriginDest,
    int nWidthDest, int nHeightDest, int nXOriginSrc, int nYOriginSrc)
{
  return ::BitBlt(hdcDest, nXOriginDest, nYOriginDest, nWidthDest,
      nHeightDest, m_hDC, nXOriginSrc, nYOriginSrc, SRCCOPY);
}

bool WinGDC::WinGStretchBlt(HDC hdcDest, int nXOriginDest, int nYOriginDest,
    int nWidthDest, int nHeightDest, int nXOriginSrc, int nYOriginSrc,
    int nWidthSrc, int nHeightSrc)
{
  return ::StretchBlt(hdcDest, nXOriginDest, nYOriginDest, nWidthDest,
      nHeightDest, (HDC)m_hDC, nXOriginSrc, nYOriginSrc, nWidthSrc, nHeightSrc,
      SRCCOPY);
}

bool WinGDC::WinGRecommendDIBFormat(BITMAPINFO far *pHeader)
{
  pHeader->bmiHeader.biHeight = 1;
  pHeader->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
  pHeader->bmiHeader.biPlanes = 1;
  pHeader->bmiHeader.biBitCount = 8;    // 256 colors
  pHeader->bmiHeader.biCompression = BI_RGB;
  pHeader->bmiHeader.biSizeImage = 0;
  pHeader->bmiHeader.biClrUsed = 0;
  pHeader->bmiHeader.biClrImportant = 0;
  return true;
}
#else
  //hmmm: no wingdc implementations for other platforms yet.
#endif


#endif //WINGDC_IMPLEMENTATION_FILE

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