IABSD.fr/xenocara/xserver/mfb/mfbbstore.c

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• Author : matthieu
  Date : 2006-11-26 18:13:41
  Hash : 889b8606
  Message : Importing xserver from X.Org 7.2RC2

• xserver/mfb/mfbbstore.c

• /* Combined Purdue/PurduePlus patches, level 2.0, 1/17/89 */
  /*
  
  Copyright 1987, 1998  The Open Group
  
  Permission to use, copy, modify, distribute, and sell this software and its
  documentation for any purpose is hereby granted without fee, provided that
  the above copyright notice appear in all copies and that both that
  copyright notice and this permission notice appear in supporting
  documentation.
  
  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 OPEN GROUP 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 Open Group 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 Open Group.
  
  */
  
  #ifdef HAVE_DIX_CONFIG_H
  #include <dix-config.h>
  #endif
  
  #include    "mfb.h"
  #include    <X11/X.h>
  #include    "mibstore.h"
  #include    "regionstr.h"
  #include    "scrnintstr.h"
  #include    "pixmapstr.h"
  #include    "windowstr.h"
  
  /*-
   *-----------------------------------------------------------------------
   * mfbSaveAreas --
   *	Function called by miSaveAreas to actually fetch the areas to be
   *	saved into the backing pixmap. This is very simple to do, since
   *	mfbDoBitblt is designed for this very thing. The region to save is
   *	already destination-relative and we're given the offset to the
   *	window origin, so we have only to create an array of points of the
   *	u.l. corners of the boxes in the region translated to the screen
   *	coordinate system and fetch the screen pixmap out of its devPrivate
   *	field....
   *
   * Results:
   *	None.
   *
   * Side Effects:
   *	Data are copied from the screen into the pixmap.
   *
   *-----------------------------------------------------------------------
   */
  void
  mfbSaveAreas(pPixmap, prgnSave, xorg, yorg, pWin)
      PixmapPtr	  	pPixmap;  	/* Backing pixmap */
      RegionPtr	  	prgnSave; 	/* Region to save (pixmap-relative) */
      int	    	  	xorg;	    	/* X origin of region */
      int	    	  	yorg;	    	/* Y origin of region */
      WindowPtr		pWin;
  {
      register DDXPointPtr pPt;
      DDXPointPtr		pPtsInit;
      register BoxPtr	pBox;
      register int	numRects;
      
      numRects = REGION_NUM_RECTS(prgnSave);
      pPtsInit = (DDXPointPtr)ALLOCATE_LOCAL(numRects * sizeof(DDXPointRec));
      if (!pPtsInit)
  	return;
      
      pBox = REGION_RECTS(prgnSave);
      pPt = pPtsInit;
      while (numRects--)
      {
  	pPt->x = pBox->x1 + xorg;
   	pPt->y = pBox->y1 + yorg;
   	pPt++;
   	pBox++;
      }
  
      mfbDoBitblt((DrawablePtr)pPixmap->drawable.pScreen->devPrivate,
  		(DrawablePtr)pPixmap,
  		GXcopy,
  		prgnSave,
  		pPtsInit);
  
      DEALLOCATE_LOCAL(pPtsInit);
  }
  
  /*-
   *-----------------------------------------------------------------------
   * mfbRestoreAreas --
   *	Function called by miRestoreAreas to actually fetch the areas to be
   *	restored from the backing pixmap. This is very simple to do, since
   *	mfbDoBitblt is designed for this very thing. The region to restore is
   *	already destination-relative and we're given the offset to the
   *	window origin, so we have only to create an array of points of the
   *	u.l. corners of the boxes in the region translated to the pixmap
   *	coordinate system and fetch the screen pixmap out of its devPrivate
   *	field....
   *
   * Results:
   *	None.
   *
   * Side Effects:
   *	Data are copied from the pixmap into the screen.
   *
   *-----------------------------------------------------------------------
   */
  void
  mfbRestoreAreas(pPixmap, prgnRestore, xorg, yorg, pWin)
      PixmapPtr	  	pPixmap;  	/* Backing pixmap */
      RegionPtr	  	prgnRestore; 	/* Region to restore (screen-relative)*/
      int	    	  	xorg;	    	/* X origin of window */
      int	    	  	yorg;	    	/* Y origin of window */
      WindowPtr		pWin;
  {
      register DDXPointPtr pPt;
      DDXPointPtr		pPtsInit;
      register BoxPtr	pBox;
      register int	numRects;
      
      numRects = REGION_NUM_RECTS(prgnRestore);
      pPtsInit = (DDXPointPtr)ALLOCATE_LOCAL(numRects*sizeof(DDXPointRec));
      if (!pPtsInit)
  	return;
      
      pBox = REGION_RECTS(prgnRestore);
      pPt = pPtsInit;
      while (numRects--)
      {
  	pPt->x = pBox->x1 - xorg;
   	pPt->y = pBox->y1 - yorg;
   	pPt++;
   	pBox++;
      }
  
      mfbDoBitblt((DrawablePtr)pPixmap,
  		(DrawablePtr)pPixmap->drawable.pScreen->devPrivate,
  		GXcopy,
  		prgnRestore,
  		pPtsInit);
  
      DEALLOCATE_LOCAL(pPtsInit);
  }