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