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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 | * XMenuInsertPane - Inserts a pane into an XMenu object in | |
10 | * a particular position. | |
11 | * | |
12 | * Author: Tony Della Fera, DEC | |
13 | * 20-Nov-85 | |
14 | * | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
18 | #include "XMenuInt.h" | |
19 | ||
20 | int | |
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21 | XMenuInsertPane(register XMenu *menu, register int p_num, char *label, int active) |
22 | /* Menu object to be modified. */ | |
23 | /* Pane number of new pane. */ | |
24 | /* Selection label. */ | |
25 | /* Make selection active? */ | |
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26 | { |
27 | register XMPane *p_ptr; /* XMPane pointer. */ | |
28 | register XMPane *pane; /* Newly created pane. */ | |
29 | register XMSelect *select; /* Initial selection for the new pane. */ | |
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31 | int label_length; /* Label length in characters. */ |
32 | int label_width; /* Label width in pixels. */ | |
33 | ||
34 | /* | |
35 | * Check for NULL pointers! | |
36 | */ | |
37 | if (label == NULL) { | |
38 | _XMErrorCode = XME_ARG_BOUNDS; | |
39 | return(XM_FAILURE); | |
40 | } | |
41 | ||
42 | /* | |
43 | * Find the pane number one less than the one specified since that | |
44 | * is the pane after which the insertion will occur. | |
45 | */ | |
46 | p_ptr = _XMGetPanePtr(menu, (p_num - 1)); | |
47 | if (p_ptr == NULL) return(XM_FAILURE); | |
48 | ||
49 | /* | |
50 | * Calloc the XMPane structure and the initial XMSelect. | |
51 | */ | |
52 | pane = (XMPane *)calloc(1, sizeof(XMPane)); | |
53 | if (pane == NULL) { | |
54 | _XMErrorCode = XME_CALLOC; | |
55 | return(XM_FAILURE); | |
56 | } | |
57 | select = (XMSelect *)calloc(1, sizeof(XMSelect)); | |
58 | if (select == NULL) { | |
59 | _XMErrorCode = XME_CALLOC; | |
60 | return(XM_FAILURE); | |
61 | } | |
62 | ||
63 | /* | |
64 | * Determine label size. | |
65 | */ | |
66 | label_length = strlen(label); | |
67 | label_width = XTextWidth(menu->p_fnt_info, label, label_length); | |
68 | ||
69 | /* | |
70 | * Set up the initial selection. | |
71 | * Values not explicitly set are zeroed by calloc. | |
72 | */ | |
73 | select->next = select; | |
74 | select->prev = select; | |
75 | select->type = SL_HEADER; | |
76 | select->serial = -1; | |
77 | select->parent_p = pane; | |
78 | ||
79 | /* | |
80 | * Fill the XMPane structure. | |
81 | */ | |
82 | pane->type = PANE; | |
83 | pane->active = active; | |
84 | pane->serial = -1; | |
85 | pane->label = label; | |
86 | pane->label_width = label_width; | |
87 | pane->label_length = label_length; | |
88 | pane->s_list = select; | |
89 | ||
90 | /* | |
91 | * Insert the pane after the pane with the pane | |
92 | * number one less than the desired number for the | |
93 | * new pane. | |
94 | */ | |
95 | emacs_insque(pane, p_ptr); | |
96 | ||
97 | /* | |
177c0ea7 | 98 | * Update the pane count. |
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99 | */ |
100 | menu->p_count++; | |
101 | ||
102 | /* | |
103 | * Schedule a recompute. | |
104 | */ | |
105 | menu->recompute = 1; | |
106 | ||
107 | /* | |
108 | * Return the number of the pane just added. | |
109 | */ | |
110 | _XMErrorCode = XME_NO_ERROR; | |
111 | return(p_num); | |
112 | } | |
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