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