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1 | /* Copyright Massachusetts Institute of Technology 1985 */ |
2 | ||
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3 | #include "copyright.h" |
4 | ||
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5 | |
6 | /* | |
7 | * XMenu: MIT Project Athena, X Window system menu package | |
8 | * | |
9 | * XMenuInsertSelection - Inserts a selection into an XMenu object | |
10 | * | |
11 | * Author: Tony Della Fera, DEC | |
12 | * 20-Nov-85 | |
13 | * | |
14 | */ | |
15 | ||
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16 | #include "XMenuInt.h" |
17 | ||
18 | int | |
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19 | XMenuInsertSelection(register XMenu *menu, register int p_num, register int s_num, char *data, char *label, int active) |
20 | /* Menu object to be modified. */ | |
21 | /* Pane number to be modified. */ | |
22 | /* Selection number of new selection. */ | |
23 | /* Data value. */ | |
24 | /* Selection label. */ | |
25 | /* Make selection active? */ | |
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26 | { |
27 | register XMPane *p_ptr; /* XMPane pointer. */ | |
28 | register XMSelect *s_ptr; /* XMSelect pointer. */ | |
29 | ||
55660072 | 30 | XMSelect *sel; /* Newly created selection. */ |
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31 | |
32 | int label_length; /* Label length in characters. */ | |
33 | int label_width; /* Label width in pixels. */ | |
177c0ea7 | 34 | |
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35 | /* |
36 | * Check for NULL pointers! | |
37 | */ | |
38 | if (label == NULL) { | |
39 | _XMErrorCode = XME_ARG_BOUNDS; | |
40 | return(XM_FAILURE); | |
41 | } | |
42 | ||
43 | /* | |
44 | * Find the right pane. | |
45 | */ | |
46 | p_ptr = _XMGetPanePtr(menu, p_num); | |
47 | if (p_ptr == NULL) return(XM_FAILURE); | |
48 | ||
49 | /* | |
50 | * Find the selection number one less than the one specified since that | |
51 | * is the selection after which the insertion will occur. | |
52 | */ | |
53 | s_ptr = _XMGetSelectionPtr(p_ptr, (s_num - 1)); | |
54 | if (s_ptr == NULL) return(XM_FAILURE); | |
55 | ||
56 | /* | |
57 | * Calloc the XMSelect structure. | |
58 | */ | |
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59 | sel = (XMSelect *)calloc(1, sizeof(XMSelect)); |
60 | if (sel == NULL) { | |
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61 | _XMErrorCode = XME_CALLOC; |
62 | return(XM_FAILURE); | |
63 | } | |
64 | ||
65 | /* | |
66 | * Determine label size. | |
67 | */ | |
68 | label_length = strlen(label); | |
69 | label_width = XTextWidth(menu->s_fnt_info, label, label_length); | |
70 | ||
71 | ||
72 | /* | |
73 | * Fill the XMSelect structure. | |
74 | */ | |
75 | if (!strcmp (label, "--") || !strcmp (label, "---")) | |
76 | { | |
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77 | sel->type = SEPARATOR; |
78 | sel->active = 0; | |
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79 | } |
80 | else | |
81 | { | |
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82 | sel->type = SELECTION; |
83 | sel->active = active; | |
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84 | } |
85 | ||
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86 | sel->active = active; |
87 | sel->serial = -1; | |
88 | sel->label = label; | |
89 | sel->label_width = label_width; | |
90 | sel->label_length = label_length; | |
91 | sel->data = data; | |
92 | sel->parent_p = p_ptr; | |
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93 | |
94 | /* | |
95 | * Insert the selection after the selection with the selection | |
96 | * number one less than the desired number for the new selection. | |
97 | */ | |
55660072 | 98 | emacs_insque(sel, s_ptr); |
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99 | |
100 | /* | |
101 | * Update the selection count. | |
102 | */ | |
103 | p_ptr->s_count++; | |
104 | ||
105 | /* | |
106 | * Schedule a recompute. | |
107 | */ | |
108 | menu->recompute = 1; | |
109 | ||
110 | /* | |
111 | * Return the selection number just inserted. | |
112 | */ | |
113 | _XMErrorCode = XME_NO_ERROR; | |
114 | return(s_num); | |
115 | } |