xorg-server-1.4/afb/afbpolypnt.c

   1 /* Combined Purdue/PurduePlus patches, level 2.0, 1/17/89 */
   2 /***********************************************************
   3
   4 Copyright (c) 1987  X Consortium
   5
   6 Permission is hereby granted, free of charge, to any person obtaining a copy
   7 of this software and associated documentation files (the "Software"), to deal
   8 in the Software without restriction, including without limitation the rights
   9 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 copies of the Software, and to permit persons to whom the Software is
  11 furnished to do so, subject to the following conditions:
  12
  13 The above copyright notice and this permission notice shall be included in
  14 all copies or substantial portions of the Software.
  15
  16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  19 X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  20 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  22
  23 Except as contained in this notice, the name of the X Consortium shall not be
  24 used in advertising or otherwise to promote the sale, use or other dealings
  25 in this Software without prior written authorization from the X Consortium.
  26
  27
  28 Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
  29
  30                         All Rights Reserved
  31
  32 Permission to use, copy, modify, and distribute this software and its
  33 documentation for any purpose and without fee is hereby granted,
  34 provided that the above copyright notice appear in all copies and that
  35 both that copyright notice and this permission notice appear in
  36 supporting documentation, and that the name of Digital not be
  37 used in advertising or publicity pertaining to distribution of the
  38 software without specific, written prior permission.
  39
  40 DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
  41 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
  42 DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
  43 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  44 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
  45 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
  46 SOFTWARE.
  47
  48 ******************************************************************/
  49
  50 #ifdef HAVE_DIX_CONFIG_H
  51 #include <dix-config.h>
  52 #endif
  53
  54 #include <X11/X.h>
  55 #include <X11/Xprotostr.h>
  56 #include "pixmapstr.h"
  57 #include "gcstruct.h"
  58 #include "windowstr.h"
  59 #include "regionstr.h"
  60 #include "scrnintstr.h"
  61
  62 #include "afb.h"
  63 #include "maskbits.h"
  64
  65 void
  66 afbPolyPoint(pDrawable, pGC, mode, npt, pptInit)
  67         register DrawablePtr pDrawable;
  68         GCPtr pGC;
  69         int mode;                               /* Origin or Previous */
  70         int npt;
  71         xPoint *pptInit;
  72 {
  73
  74         register BoxPtr pbox;
  75         register int nbox;
  76         register int d;
  77
  78         register PixelType *addrl;
  79         PixelType *pBase;
  80         PixelType *pBaseSave;
  81         int nlwidth;
  82         int sizeDst;
  83         int depthDst;
  84
  85         int nptTmp;
  86         register xPoint *ppt;
  87
  88         register int x;
  89         register int y;
  90         register unsigned char *rrops;
  91         afbPrivGC *pGCPriv;
  92
  93         pGCPriv = (afbPrivGC *) pGC->devPrivates[afbGCPrivateIndex].ptr;
  94
  95         afbGetPixelWidthSizeDepthAndPointer(pDrawable, nlwidth, sizeDst, depthDst,
  96                                                                                                          pBaseSave);
  97
  98         rrops = pGCPriv->rrops;
  99         if ((mode == CoordModePrevious) && (npt > 1))
 100                 for (ppt = pptInit + 1, nptTmp = npt - 1; --nptTmp >= 0; ppt++) {
 101                         ppt->x += (ppt-1)->x;
 102                         ppt->y += (ppt-1)->y;
 103                 }
 104
 105         nbox = REGION_NUM_RECTS(pGC->pCompositeClip);
 106         pbox = REGION_RECTS(pGC->pCompositeClip);
 107         for (; --nbox >= 0; pbox++)
 108                 for (d = 0, pBase = pBaseSave; d < depthDst; d++, pBase += sizeDst) {   /* @@@ NEXT PLANE @@@ */
 109                         addrl = pBase;
 110
 111                         switch (rrops[d]) {
 112                                 case RROP_BLACK:
 113                                         for (ppt = pptInit, nptTmp = npt; --nptTmp >= 0; ppt++) {
 114                                                 x = ppt->x + pDrawable->x;
 115                                                 y = ppt->y + pDrawable->y;
 116                                                 if ((x >= pbox->x1) && (x < pbox->x2) &&
 117                                                         (y >= pbox->y1) && (y < pbox->y2))
 118                                                         *afbScanline(addrl, x, y, nlwidth) &= mfbGetrmask(x & PIM);
 119                                         }
 120                                         break;
 121
 122                                 case RROP_WHITE:
 123                                         for (ppt = pptInit, nptTmp = npt; --nptTmp >= 0; ppt++) {
 124                                                 x = ppt->x + pDrawable->x;
 125                                                 y = ppt->y + pDrawable->y;
 126                                                 if ((x >= pbox->x1) && (x < pbox->x2) &&
 127                                                         (y >= pbox->y1) && (y < pbox->y2))
 128                                                         *afbScanline(addrl, x, y, nlwidth) |= mfbGetmask(x & PIM);
 129                                         }
 130                                         break;
 131
 132                                 case RROP_INVERT:
 133                                         for (ppt = pptInit, nptTmp = npt; --nptTmp >= 0; ppt++) {
 134                                                 x = ppt->x + pDrawable->x;
 135                                                 y = ppt->y + pDrawable->y;
 136                                                 if ((x >= pbox->x1) && (x < pbox->x2) &&
 137                                                         (y >= pbox->y1) && (y < pbox->y2))
 138                                                         *afbScanline(addrl, x, y, nlwidth) ^= mfbGetmask(x & PIM);
 139                                         }
 140                                         break;
 141
 142                                 case RROP_NOP:
 143                                         break;
 144                         } /* switch */
 145                 } /* for (d = ...) */
 146 }