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Annotation of 43BSD/contrib/X/libvs100/fill.c, revision 1.1.1.1

1.1       root        1: /* $Header: fill.c,v 10.3 86/02/01 15:46:50 tony Rel $ */
                      2: /* fill.c      Perform a simple raster operation a section of the screen
                      3:  *
                      4:  *     PixFill Do a function on the screen
                      5:  *
                      6:  */
                      7: 
                      8: /****************************************************************************
                      9:  *                                                                         *
                     10:  *  Copyright (c) 1983, 1984 by                                                    *
                     11:  *  DIGITAL EQUIPMENT CORPORATION, Maynard, Massachusetts.                 *
                     12:  *  All rights reserved.                                                   *
                     13:  *                                                                         *
                     14:  *  This software is furnished on an as-is basis and may be used and copied *
                     15:  *  only with inclusion of the above copyright notice. This software or any *
                     16:  *  other copies thereof may be provided or otherwise made available to     *
                     17:  *  others only for non-commercial purposes.  No title to or ownership of   *
                     18:  *  the software is hereby transferred.                                            *
                     19:  *                                                                         *
                     20:  *  The information in this software is  subject to change without notice   *
                     21:  *  and  should  not  be  construed as  a commitment by DIGITAL EQUIPMENT   *
                     22:  *  CORPORATION.                                                           *
                     23:  *                                                                         *
                     24:  *  DIGITAL assumes no responsibility for the use  or  reliability of its   *
                     25:  *  software on equipment which is not supplied by DIGITAL.                *
                     26:  *                                                                         *
                     27:  *                                                                         *
                     28:  ****************************************************************************/
                     29: 
                     30: #include "vs100.h"
                     31: 
                     32: extern BitMap screen;
                     33: extern int VSReloc;
                     34: extern char SSMap[];
                     35: 
                     36: char *AllocateSpace();
                     37: 
                     38: PixFill (srcpix, xymask, dstx, dsty, width, height, clips, clipcount,
                     39:         func, zmask)
                     40:        int srcpix, dstx, dsty, width, height, clipcount, zmask;
                     41:        register BITMAP *xymask;
                     42:        register int func;
                     43:        CLIP *clips;
                     44: {
                     45:        register CopyAreaPacket *cap;
                     46: #define        h ((PacketHeader *) cap->cap_head)
                     47: #define mask ((SubBitmap *) cap->cap_sourceMask)
                     48: #define        size ((Extent *) cap->cap_maskSize)
                     49: #define        destOff ((Point *) cap->cap_destOffset)
                     50: #define        clip ((RectangleList *) cap->cap_clipping.rectList)
                     51: 
                     52:        if (!(zmask & 1)) {
                     53:            DeallocateSpace ();
                     54:            return;
                     55:        }
                     56:        cap = (CopyAreaPacket *) AllocateSpace (sizeof (CopyAreaPacket));
                     57:        if (cap == NULL) return;
                     58: 
                     59:        func = SSMap[func];
                     60:        h->ph_copyMod.m_source = 0;
                     61:        h->ph_copyMod.m_mask = xymask ? 1 : 0;
                     62:        h->ph_copyMod.m_map = MAPTYPE(func);
                     63:        h->ph_opcode = COPY_AREA;
                     64:        *(long *) h->ph_next = NULL;
                     65: 
                     66:        cap->cap_source.const = srcpix & 1;
                     67: 
                     68:        if (xymask) {
                     69:                *(caddr_t *) mask->sb_address = BDATA(xymask)->vsPtr;
                     70:                mask->sb_height = xymask->height;
                     71:                mask->sb_width = xymask->width;
                     72:                mask->sb_bitsPerPixel = 1;
                     73:                mask->sb_x = mask->sb_y = 0;
                     74:        }
                     75:        size->e_height = height;
                     76:        size->e_width = width;
                     77: 
                     78:        *(BitMap *) cap->cap_destImage = screen;
                     79:        destOff->p_x = dstx;
                     80:        destOff->p_y = dsty;
                     81: 
                     82:        *(short *) cap->cap_map.literal = MAPLIT(func);
                     83: 
                     84:        if (clipcount == 1) {
                     85:            h->ph_copyMod.m_clipping = 1;
                     86:            *(CLIP *) cap->cap_clipping.litRect = *clips;
                     87:        } else {
                     88:            h->ph_copyMod.m_clipping = 2;
                     89:            *(caddr_t *) clip->r_first = (caddr_t) clips + VSReloc;
                     90:            clip->r_count = clipcount;
                     91:        }
                     92: 
                     93:        WritePacket ((caddr_t) cap);
                     94: #undef h
                     95: #undef mask
                     96: #undef size
                     97: #undef destOff
                     98: #undef clip
                     99: }

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