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1.1 root 1: #ifndef lint
2: static char *rcsid_StoreGridBox_c = "$Header: StoreGridBox.c,v 10.3 86/02/01 16:24:00 tony Rel $";
3: #endif lint
4:
5: /************************************************************************
6: * *
7: * Copyright (c) 1986 by *
8: * Digital Equipment Corporation, Maynard, MA *
9: * All Rights Reserved. *
10: * *
11: * Permission to use, copy, modify, and distribute this software *
12: * and its documentation is hereby granted only to licensees of *
13: * The Regents of the University of California pursuant to their *
14: * license agreement for the Berkeley Software Distribution *
15: * provided that the following appears on all copies. *
16: * *
17: * "LICENSED FROM DIGITAL EQUIPMENT CORPORATION *
18: * COPYRIGHT (C) 1986 *
19: * DIGITAL EQUIPMENT CORPORATION *
20: * MAYNARD, MA *
21: * ALL RIGHTS RESERVED. *
22: * *
23: * THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT *
24: * NOTICE AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL *
25: * EQUIPMENT CORPORATION. DIGITAL MAKES NO REPRESENTATIONS *
26: * ABOUT SUITABILITY OF THIS SOFTWARE FOR ANY PURPOSE. IT IS *
27: * SUPPLIED "AS IS" WITHOUT EXPRESS OR IMPLIED WARRANTY. *
28: * *
29: * IF THE UNIVERSITY OF CALIFORNIA OR ITS LICENSEES MODIFY *
30: * THE SOFTWARE IN A MANNER CREATING DERIVATIVE COPYRIGHT *
31: * RIGHTS APPROPRIATE COPYRIGHT LEGENDS MAY BE PLACED ON THE *
32: * DERIVATIVE WORK IN ADDITION TO THAT SET FORTH ABOVE." *
33: * *
34: ************************************************************************/
35:
36:
37: /*
38: * MODIFICATION HISTORY
39: *
40: * 000 -- M. Gancarz, DEC Ultrix Engineering Group
41: */
42:
43: #ifndef lint
44: static char *sccsid = "@(#)StoreGridBox.c 3.8 1/24/86";
45: #endif
46: /*
47: * StoreGridBox - This subroutine is used by the X Window Manager (xwm)
48: * to store the vertices for the movement resize grid and box in a
49: * vertex list.
50: */
51:
52: #include "uwm.h"
53:
54: /*
55: * Store the vertices for the movement resize grid and box in a vertex list.
56: */
57: int StoreGridBox(box, ulx, uly, lrx, lry)
58: register Vertex box[];
59: int ulx; /* Upper left X coordinate. */
60: int uly; /* Upper left Y coordinate. */
61: int lrx; /* Lower right X coordinate. */
62: int lry; /* Lower right Y coordinate. */
63: {
64: register int xthird, ythird;
65: int x1third, y1third;
66: int x2third, y2third;
67:
68: /*
69: * Xor in.
70: */
71: box[0].x = box[3].x = box[4].x = box[5].x = box[7].x = ulx;
72: box[1].x = box[2].x = box[6].x = box[8].x = lrx;
73:
74: box[0].y = box[1].y = box[4].y = box[9].y = box[11].y = uly;
75: box[2].y = box[3].y = box[10].y = box[12].y = lry;
76:
77: box[0].flags = box[5].flags = box[7].flags = box[9].flags =
78: box[11].flags = VertexDontDraw;
79:
80: /*
81: * These are the X and Y calculations for the parts of the grid that
82: * are dependent on the division by 3 calculations.
83: */
84:
85: /*
86: * Y dimension third.
87: */
88: ythird = (lry - uly) / 3;
89: y1third = uly + ythird;
90: y2third = y1third + ythird;
91:
92: /*
93: * X dimension third.
94: */
95: xthird = (lrx - ulx) / 3;
96: x1third = ulx + xthird;
97: x2third = x1third + xthird;
98:
99: /*
100: * Stash first set of vertices.
101: */
102: box[5].y = box[6].y = y1third;
103: box[7].y = box[8].y = y2third;
104:
105: box[9].x = box[10].x = x1third;
106: box[11].x = box[12].x = x2third;
107:
108: /*
109: * Do not erase if we're freezing the screen.
110: */
111: if (Freeze)
112: return(13);
113:
114: /*
115: * From here on we're retracing the vertices to clear the
116: * grid using GXxor.
117: */
118: box[18].y = box[19].y = y1third;
119: box[20].y = box[21].y = y2third;
120:
121: box[22].x = box[23].x = x1third;
122: box[24].x = box[25].x = x2third;
123:
124: box[13].x = box[16].x = box[17].x = box[18].x = box[20].x = ulx;
125: box[13].y = box[14].y = box[17].y = box[22].y = box[24].y = uly;
126:
127: box[14].x = box[15].x = box[19].x = box[21].x = lrx;
128: box[15].y = box[16].y = box[23].y = box[25].y = lry;
129:
130: box[13].flags = box[18].flags = box[20].flags = box[22].flags =
131: box[24].flags = VertexDontDraw;
132:
133:
134: /*
135: * Total number of vertices is 26.
136: */
137: return(26);
138: }
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