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Annotation of 43BSDTahoe/new/X/uwm/StoreGridBox.c, revision 1.1

1.1     ! root        1: #ifndef lint
        !             2: static char *rcsid_StoreGridBox_c = "$Header: StoreGridBox.c,v 10.4 86/11/19 16:24:52 jg Rel $";
        !             3: #endif lint
        !             4: 
        !             5: /*
        !             6:  *                     COPYRIGHT 1985, 1986
        !             7:  *                DIGITAL EQUIPMENT CORPORATION
        !             8:  *                    MAYNARD, MASSACHUSETTS
        !             9:  *                     ALL RIGHTS RESERVED.
        !            10:  *
        !            11:  * THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT NOTICE AND
        !            12:  * SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL EQUIPMENT CORPORATION.
        !            13:  * DIGITAL MAKES NO REPRESENTATIONS ABOUT THE SUITIBILITY OF THIS SOFTWARE FOR
        !            14:  * ANY PURPOSE.  IT IS SUPPLIED "AS IS" WITHOUT EXPRESS OR IMPLIED WARRANTY.
        !            15:  *
        !            16:  * IF THE SOFTWARE IS MODIFIED IN A MANNER CREATING DERIVATIVE COPYRIGHT RIGHTS,
        !            17:  * APPROPRIATE LEGENDS MAY BE PLACED ON THE DERIVATIVE WORK IN ADDITION TO THAT
        !            18:  * SET FORTH ABOVE.
        !            19:  *
        !            20:  *
        !            21:  * Permission to use, copy, modify, and distribute this software and its
        !            22:  * documentation for any purpose and without fee is hereby granted, provided
        !            23:  * that the above copyright notice appear in all copies and that both that
        !            24:  * copyright notice and this permission notice appear in supporting documentation,
        !            25:  * and that the name of Digital Equipment Corporation not be used in advertising
        !            26:  * or publicity pertaining to distribution of the software without specific, 
        !            27:  * written prior permission.
        !            28:  *
        !            29:  */
        !            30: 
        !            31: 
        !            32: /*
        !            33:  * MODIFICATION HISTORY
        !            34:  *
        !            35:  * 000 -- M. Gancarz, DEC Ultrix Engineering Group
        !            36:  */
        !            37: 
        !            38: #ifndef lint
        !            39: static char *sccsid = "@(#)StoreGridBox.c      3.8     1/24/86";
        !            40: #endif
        !            41: /*
        !            42:  *     StoreGridBox - This subroutine is used by the X Window Manager (xwm)
        !            43:  *     to store the vertices for the movement resize grid and box in a
        !            44:  *     vertex list.
        !            45:  */
        !            46: 
        !            47: #include "uwm.h"
        !            48: 
        !            49: /*
        !            50:  * Store the vertices for the movement resize grid and box in a vertex list.
        !            51:  */
        !            52: int StoreGridBox(box, ulx, uly, lrx, lry)
        !            53: register Vertex box[];
        !            54: int ulx;                       /* Upper left X coordinate. */
        !            55: int uly;                       /* Upper left Y coordinate. */
        !            56: int lrx;                       /* Lower right X coordinate. */
        !            57: int lry;                       /* Lower right Y coordinate. */
        !            58: {
        !            59:     register int xthird, ythird;
        !            60:     int x1third, y1third;
        !            61:     int x2third, y2third;
        !            62: 
        !            63:     /*
        !            64:      * Xor in.
        !            65:      */
        !            66:     box[0].x = box[3].x = box[4].x = box[5].x = box[7].x = ulx;
        !            67:     box[1].x = box[2].x = box[6].x = box[8].x = lrx;
        !            68: 
        !            69:     box[0].y = box[1].y = box[4].y = box[9].y = box[11].y = uly;
        !            70:     box[2].y = box[3].y = box[10].y = box[12].y = lry;
        !            71: 
        !            72:     box[0].flags = box[5].flags = box[7].flags = box[9].flags =
        !            73:         box[11].flags = VertexDontDraw;
        !            74: 
        !            75:     /*
        !            76:      * These are the X and Y calculations for the parts of the grid that
        !            77:      * are dependent on the division by 3 calculations.
        !            78:      */
        !            79: 
        !            80:     /*
        !            81:      * Y dimension third.
        !            82:      */
        !            83:     ythird = (lry - uly) / 3;
        !            84:     y1third = uly + ythird;
        !            85:     y2third = y1third + ythird;
        !            86:    
        !            87:     /*
        !            88:      * X dimension third.
        !            89:      */
        !            90:     xthird = (lrx - ulx) / 3;
        !            91:     x1third = ulx + xthird;
        !            92:     x2third = x1third + xthird;
        !            93: 
        !            94:     /*
        !            95:      * Stash first set of vertices.
        !            96:      */
        !            97:     box[5].y = box[6].y = y1third;
        !            98:     box[7].y = box[8].y = y2third;
        !            99: 
        !           100:     box[9].x = box[10].x = x1third;
        !           101:     box[11].x = box[12].x = x2third; 
        !           102: 
        !           103:     /*
        !           104:      * Do not erase if we're freezing the screen.
        !           105:      */
        !           106:     if (Freeze)
        !           107:         return(13);
        !           108: 
        !           109:     /*
        !           110:      * From here on we're retracing the vertices to clear the
        !           111:      * grid using GXxor.
        !           112:      */
        !           113:     box[18].y = box[19].y = y1third;
        !           114:     box[20].y = box[21].y = y2third;
        !           115: 
        !           116:     box[22].x = box[23].x = x1third;
        !           117:     box[24].x = box[25].x = x2third;
        !           118: 
        !           119:     box[13].x = box[16].x = box[17].x = box[18].x = box[20].x = ulx;
        !           120:     box[13].y = box[14].y = box[17].y = box[22].y = box[24].y = uly;
        !           121: 
        !           122:     box[14].x = box[15].x = box[19].x = box[21].x = lrx;
        !           123:     box[15].y = box[16].y = box[23].y = box[25].y = lry;
        !           124: 
        !           125:     box[13].flags = box[18].flags = box[20].flags = box[22].flags =
        !           126:         box[24].flags = VertexDontDraw;
        !           127: 
        !           128: 
        !           129:     /*
        !           130:      * Total number of vertices is 26.
        !           131:      */
        !           132:     return(26);
        !           133: }

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