diff options
Diffstat (limited to 'nx-X11/programs/Xserver/cfb/cfbbstore.c')
| -rw-r--r-- | nx-X11/programs/Xserver/cfb/cfbbstore.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/cfb/cfbbstore.c b/nx-X11/programs/Xserver/cfb/cfbbstore.c new file mode 100644 index 000000000..64adc4050 --- /dev/null +++ b/nx-X11/programs/Xserver/cfb/cfbbstore.c @@ -0,0 +1,145 @@ +/* $XFree86: xc/programs/Xserver/cfb/cfbbstore.c,v 1.4 1999/01/31 12:21:41 dawes Exp $ */ +/*- + * cfbbstore.c -- + * Functions required by the backing-store implementation in MI. + * + * Copyright (c) 1987 by the Regents of the University of California + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies. The University of California + * makes no representations about the suitability of this + * software for any purpose. It is provided "as is" without + * express or implied warranty. + * + * + */ +/* $Xorg: cfbbstore.c,v 1.3 2000/08/17 19:48:13 cpqbld Exp $ */ + +#ifdef HAVE_DIX_CONFIG_H +#include <dix-config.h> +#endif + +#include "cfb.h" +#include <X11/X.h> +#include "mibstore.h" +#include "regionstr.h" +#include "scrnintstr.h" +#include "pixmapstr.h" +#include "windowstr.h" + +/*- + *----------------------------------------------------------------------- + * cfbSaveAreas -- + * Function called by miSaveAreas to actually fetch the areas to be + * saved into the backing pixmap. This is very simple to do, since + * cfbDoBitblt 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 +cfbSaveAreas(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 i; + ScreenPtr pScreen = pPixmap->drawable.pScreen; + PixmapPtr pScrPix; + + i = REGION_NUM_RECTS(prgnSave); + pPtsInit = (DDXPointPtr)ALLOCATE_LOCAL(i * sizeof(DDXPointRec)); + if (!pPtsInit) + return; + + pBox = REGION_RECTS(prgnSave); + pPt = pPtsInit; + while (--i >= 0) { + pPt->x = pBox->x1 + xorg; + pPt->y = pBox->y1 + yorg; + pPt++; + pBox++; + } + + pScrPix = (*pScreen->GetWindowPixmap)(pWin); + + + cfbDoBitbltCopy((DrawablePtr) pScrPix, (DrawablePtr)pPixmap, + GXcopy, prgnSave, pPtsInit, ~0L); + + DEALLOCATE_LOCAL (pPtsInit); +} + +/*- + *----------------------------------------------------------------------- + * cfbRestoreAreas -- + * Function called by miRestoreAreas to actually fetch the areas to be + * restored from the backing pixmap. This is very simple to do, since + * cfbDoBitblt 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 +cfbRestoreAreas(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 i; + ScreenPtr pScreen = pPixmap->drawable.pScreen; + PixmapPtr pScrPix; + + i = REGION_NUM_RECTS(prgnRestore); + pPtsInit = (DDXPointPtr)ALLOCATE_LOCAL(i*sizeof(DDXPointRec)); + if (!pPtsInit) + return; + + pBox = REGION_RECTS(prgnRestore); + pPt = pPtsInit; + while (--i >= 0) { + pPt->x = pBox->x1 - xorg; + pPt->y = pBox->y1 - yorg; + pPt++; + pBox++; + } + + pScrPix = (*pScreen->GetWindowPixmap)(pWin); + + cfbDoBitbltCopy((DrawablePtr)pPixmap, (DrawablePtr) pScrPix, + GXcopy, prgnRestore, pPtsInit, ~0L); + + DEALLOCATE_LOCAL (pPtsInit); +} |