xserver/hw/xwin/winsetsp.c

/*
 *Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved.
 *
 *Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 *"Software"), to deal in the Software without restriction, including
 *without limitation the rights to use, copy, modify, merge, publish,
 *distribute, sublicense, and/or sell copies of the Software, and to
 *permit persons to whom the Software is furnished to do so, subject to
 *the following conditions:
 *
 *The above copyright notice and this permission notice shall be
 *included in all copies or substantial portions of the Software.
 *
 *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *NONINFRINGEMENT. IN NO EVENT SHALL THE XFREE86 PROJECT BE LIABLE FOR
 *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 *Except as contained in this notice, the name of the XFree86 Project
 *shall not be used in advertising or otherwise to promote the sale, use
 *or other dealings in this Software without prior written authorization
 *from the XFree86 Project.
 *
 * Authors:	Harold L Hunt II
 * 		Alan Hourihane <alanh@fairlite.demon.co.uk>
 */

#ifdef HAVE_XWIN_CONFIG_H
#include <xwin-config.h>
#endif
#include "win.h"


/* See Porting Layer Definition - p. 55 */
void
winSetSpansNativeGDI (DrawablePtr	pDrawable,
		      GCPtr		pGC,
		      char		*pSrcs,
		      DDXPointPtr	pPoints,
		      int		*piWidths,
		      int		iSpans,
		      int		fSorted)
{
  winGCPriv(pGC);
  PixmapPtr		pPixmap = NULL;
  winPrivPixmapPtr	pPixmapPriv = NULL;
  HBITMAP		hbmpOrig = NULL;
  BITMAPINFO		bmi;
  HRGN			hrgn = NULL, combined = NULL;
  int			nbox;
  BoxPtr	 	pbox;

  nbox = REGION_NUM_RECTS (pGC->pCompositeClip);
  pbox = REGION_RECTS (pGC->pCompositeClip);

  if (!nbox) return;

  combined = CreateRectRgn (pbox->x1, pbox->y1, pbox->x2, pbox->y2);
  nbox--; pbox++;
  while (nbox--)
    {
      hrgn = CreateRectRgn (pbox->x1, pbox->y1, pbox->x2, pbox->y2);
      CombineRgn (combined, combined, hrgn, RGN_OR);
      DeleteObject (hrgn);
      hrgn = NULL;
      pbox++;
    }

  /* Branch on the drawable type */
  switch (pDrawable->type)
    {
    case DRAWABLE_PIXMAP:

      SelectClipRgn (pGCPriv->hdcMem, combined);
      DeleteObject (combined);
      combined = NULL;

      pPixmap = (PixmapPtr) pDrawable;
      pPixmapPriv = winGetPixmapPriv (pPixmap);
      
      /* Select the drawable pixmap into a DC */
      hbmpOrig = SelectObject (pGCPriv->hdcMem, pPixmapPriv->hBitmap);
      if (hbmpOrig == NULL)
	FatalError ("winSetSpans - DRAWABLE_PIXMAP - SelectObject () "
		    "failed on pPixmapPriv->hBitmap\n");

      while (iSpans--)
        {
	  ZeroMemory (&bmi, sizeof (BITMAPINFO));
	  bmi.bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
	  bmi.bmiHeader.biWidth = *piWidths;
	  bmi.bmiHeader.biHeight = 1;
	  bmi.bmiHeader.biPlanes = 1;
	  bmi.bmiHeader.biBitCount = pDrawable->depth;
	  bmi.bmiHeader.biCompression = BI_RGB;

  	  /* Setup color table for mono DIBs */
  	  if (pDrawable->depth == 1)
    	    {
      	      bmi.bmiColors[1].rgbBlue = 255;
      	      bmi.bmiColors[1].rgbGreen = 255;
      	      bmi.bmiColors[1].rgbRed = 255;
    	    }

	  StretchDIBits (pGCPriv->hdcMem, 
			 pPoints->x, pPoints->y,
			 *piWidths, 1,
			 0, 0,
			 *piWidths, 1,
			 pSrcs,
			 (BITMAPINFO *) &bmi,
			 DIB_RGB_COLORS,
			 g_copyROP[pGC->alu]);

	  pSrcs += PixmapBytePad (*piWidths, pDrawable->depth);
	  pPoints++;
	  piWidths++;
        }
      
      /* Reset the clip region */
      SelectClipRgn (pGCPriv->hdcMem, NULL);

      /* Push the drawable pixmap out of the GC HDC */
      SelectObject (pGCPriv->hdcMem, hbmpOrig);
      break;

    case DRAWABLE_WINDOW:

      SelectClipRgn (pGCPriv->hdc, combined);
      DeleteObject (combined);
      combined = NULL;

      while (iSpans--)
        {
	  ZeroMemory (&bmi, sizeof (BITMAPINFO));
	  bmi.bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
	  bmi.bmiHeader.biWidth = *piWidths;
	  bmi.bmiHeader.biHeight = 1;
	  bmi.bmiHeader.biPlanes = 1;
	  bmi.bmiHeader.biBitCount = pDrawable->depth;
	  bmi.bmiHeader.biCompression = BI_RGB;

  	  /* Setup color table for mono DIBs */
  	  if (pDrawable->depth == 1)
    	    {
      	      bmi.bmiColors[1].rgbBlue = 255;
      	      bmi.bmiColors[1].rgbGreen = 255;
      	      bmi.bmiColors[1].rgbRed = 255;
    	    }

	  StretchDIBits (pGCPriv->hdc, 
			 pPoints->x, pPoints->y,
			 *piWidths, 1,
			 0, 0,
			 *piWidths, 1,
			 pSrcs,
			 (BITMAPINFO *) &bmi,
			 DIB_RGB_COLORS,
			 g_copyROP[pGC->alu]);

	  pSrcs += PixmapBytePad (*piWidths, pDrawable->depth);
	  pPoints++;
	  piWidths++;
        }

      /* Reset the clip region */
      SelectClipRgn (pGCPriv->hdc, NULL);
      break;

    case UNDRAWABLE_WINDOW:
      FatalError ("\nwinSetSpansNativeGDI - UNDRAWABLE_WINDOW\n\n");
      break;

    case DRAWABLE_BUFFER:
      FatalError ("\nwinSetSpansNativeGDI - DRAWABLE_BUFFER\n\n");
      break;
      
    default:
      FatalError ("\nwinSetSpansNativeGDI - Unknown drawable type\n\n");
      break;
    }
}