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

1.1       root        1: /* $Header: copy.c,v 10.3 86/02/01 15:46:31 tony Rel $ */
                      2: /* copy.c      Copy one section of the framebuffer to another
                      3:  *
                      4:  *     CopyArea        Copies a section of the framebuffer
                      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: CopyArea (srcx, srcy, width, height, dstx, dsty, clips, clipcount, func, zmask)
                     39:        int srcx, srcy, width, height, dstx, dsty, clipcount, zmask;
                     40:        register int func;
                     41:        CLIP *clips;
                     42: {
                     43:        register CopyAreaPacket *cap;
                     44: 
                     45:        if (!(zmask & 1)) {
                     46:            DeallocateSpace ();
                     47:            return;
                     48:        }
                     49:        cap = (CopyAreaPacket *) AllocateSpace (sizeof (CopyAreaPacket));
                     50:        if(cap == NULL) return;
                     51: #define h ((PacketHeader *) cap->cap_head)
                     52: #define src ((SubBitmap *) cap->cap_source.image)
                     53: #define size ((Extent *) cap->cap_maskSize)
                     54: #define destOff ((Point *) cap->cap_destOffset)
                     55: #define clip ((RectangleList *) cap->cap_clipping.rectList)
                     56: 
                     57:        func = SSMap[func];
                     58:        h->ph_copyMod.m_source = 1;
                     59:        h->ph_copyMod.m_mask = 0;
                     60:        h->ph_copyMod.m_map = MAPTYPE(func);
                     61:        h->ph_opcode = COPY_AREA;
                     62:        *(long *) h->ph_next = NULL;
                     63: 
                     64:        *(BitMap *) src->sb_base = screen;
                     65:        src->sb_x = srcx;
                     66:        src->sb_y = srcy;
                     67:        size->e_height = height;
                     68:        size->e_width = width;
                     69: 
                     70:        *(BitMap *) cap->cap_destImage = screen;
                     71:        destOff->p_x = dstx;
                     72:        destOff->p_y = dsty;
                     73: 
                     74:        *(short *) cap->cap_map.literal = MAPLIT(func);
                     75: 
                     76:        if (clipcount == 1) {
                     77:            h->ph_copyMod.m_clipping = 1;
                     78:            *(CLIP *) cap->cap_clipping.litRect = *clips;
                     79:        } else {
                     80:            h->ph_copyMod.m_clipping = 2;
                     81:            *(caddr_t *) clip->r_first = (caddr_t) clips + VSReloc;
                     82:            clip->r_count = clipcount;
                     83:        }
                     84: 
                     85:        WritePacket ((caddr_t) cap);
                     86: #undef h
                     87: #undef src
                     88: #undef size
                     89: #undef destOff
                     90: #undef clip
                     91: }

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