1 /* Copyright Massachusetts Institute of Technology 1985 */
2
3 /*
4
5 Copyright 1985, 1986, 1987 by the Massachusetts Institute of Technology
6
7 Permission to use, copy, modify, and distribute this
8 software and its documentation for any purpose and without
9 fee is hereby granted, provided that the above copyright
10 notice appear in all copies and that both that copyright
11 notice and this permission notice appear in supporting
12 documentation, and that the name of M.I.T. not be used in
13 advertising or publicity pertaining to distribution of the
14 software without specific, written prior permission.
15 M.I.T. makes no representations about the suitability of
16 this software for any purpose. It is provided "as is"
17 without express or implied warranty.
18
19 */
20
21
22
23
24 /*
25 * XMenu: MIT Project Athena, X Window system menu package
26 *
27 * XMenuRecompute - Recompute XMenu object dependencies.
28 *
29 * Author: Tony Della Fera, DEC
30 * September, 1985
31 *
32 */
33
34 #include "XMenuInt.h"
35
36 int
37 XMenuRecompute(Display *display, register XMenu *menu)
38
39 /* Menu object to be recomputed. */
40 {
41 register XMPane *p_ptr; /* Pane pointer. */
42 register XMSelect *s_ptr; /* Selection pointer. */
43
44 register int p_num; /* Pane serial number. */
45 register int s_num; /* Selection serial number. */
46
47 /*
48 * If there are no panes in the menu then return failure
49 * because the menu is not initialized.
50 */
51 if (menu->p_count == 0) {
52 _XMErrorCode = XME_NOT_INIT;
53 return(XM_FAILURE);
54 }
55
56 /*
57 * Recompute menu wide global values: pane window size,
58 * selection size and maximum selection count.
59 */
60 _XMRecomputeGlobals(display, menu);
61
62 /*
63 * For each pane in the menu...
64 */
65
66 p_num = 0;
67 for (
68 p_ptr = menu->p_list->next;
69 p_ptr != menu->p_list;
70 p_ptr = p_ptr->next
71 ){
72 /*
73 * Recompute pane dependencies.
74 */
75 if (_XMRecomputePane(display, menu, p_ptr, p_num) == _FAILURE) {
76 return(XM_FAILURE);
77 }
78 p_num++;
79
80 /*
81 * For each selection in the pane...
82 */
83 s_num = 0;
84 for (
85 s_ptr = p_ptr->s_list->next;
86 s_ptr != p_ptr->s_list;
87 s_ptr = s_ptr->next
88 ) {
89 /*
90 * Recompute selection dependencies.
91 */
92 if (_XMRecomputeSelection(display, menu, s_ptr, s_num) == _FAILURE) {
93 return(XM_FAILURE);
94 }
95 s_num++;
96 }
97 }
98
99 /*
100 * Recompute menu size.
101 */
102 if (menu->menu_style == CENTER) {
103 menu->width = menu->p_width + (menu->p_bdr_width << 1);
104 }
105 else {
106 menu->width = menu->p_width + (menu->p_bdr_width << 1) +
107 ((menu->p_count - 1) * menu->p_x_off);
108 }
109 menu->height = menu->p_height + (menu->p_bdr_width << 1) +
110 ((menu->p_count - 1) * menu->p_y_off);
111
112 /*
113 * Reset the recompute flag.
114 */
115 menu->recompute = 0;
116
117 /*
118 * Return successfully.
119 */
120 _XMErrorCode = XME_NO_ERROR;
121 return(XM_SUCCESS);
122 }
123