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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 | ||
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17 | #include "XMenuInt.h" |
18 | ||
19 | int | |
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20 | XMenuInsertPane(register XMenu *menu, register int p_num, char *label, int active) |
21 | /* Menu object to be modified. */ | |
22 | /* Pane number of new pane. */ | |
23 | /* Selection label. */ | |
24 | /* Make selection active? */ | |
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25 | { |
26 | register XMPane *p_ptr; /* XMPane pointer. */ | |
27 | register XMPane *pane; /* Newly created pane. */ | |
55660072 | 28 | register XMSelect *sel; /* Initial selection for the new pane. */ |
177c0ea7 | 29 | |
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30 | int label_length; /* Label length in characters. */ |
31 | int label_width; /* Label width in pixels. */ | |
32 | ||
33 | /* | |
34 | * Check for NULL pointers! | |
35 | */ | |
36 | if (label == NULL) { | |
37 | _XMErrorCode = XME_ARG_BOUNDS; | |
38 | return(XM_FAILURE); | |
39 | } | |
40 | ||
41 | /* | |
42 | * Find the pane number one less than the one specified since that | |
43 | * is the pane after which the insertion will occur. | |
44 | */ | |
45 | p_ptr = _XMGetPanePtr(menu, (p_num - 1)); | |
46 | if (p_ptr == NULL) return(XM_FAILURE); | |
47 | ||
48 | /* | |
49 | * Calloc the XMPane structure and the initial XMSelect. | |
50 | */ | |
51 | pane = (XMPane *)calloc(1, sizeof(XMPane)); | |
52 | if (pane == NULL) { | |
53 | _XMErrorCode = XME_CALLOC; | |
54 | return(XM_FAILURE); | |
55 | } | |
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56 | sel = (XMSelect *)calloc(1, sizeof(XMSelect)); |
57 | if (sel == NULL) { | |
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58 | _XMErrorCode = XME_CALLOC; |
59 | return(XM_FAILURE); | |
60 | } | |
61 | ||
62 | /* | |
63 | * Determine label size. | |
64 | */ | |
65 | label_length = strlen(label); | |
66 | label_width = XTextWidth(menu->p_fnt_info, label, label_length); | |
67 | ||
68 | /* | |
69 | * Set up the initial selection. | |
70 | * Values not explicitly set are zeroed by calloc. | |
71 | */ | |
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72 | sel->next = sel; |
73 | sel->prev = sel; | |
74 | sel->type = SL_HEADER; | |
75 | sel->serial = -1; | |
76 | sel->parent_p = pane; | |
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77 | |
78 | /* | |
79 | * Fill the XMPane structure. | |
80 | */ | |
81 | pane->type = PANE; | |
82 | pane->active = active; | |
83 | pane->serial = -1; | |
84 | pane->label = label; | |
85 | pane->label_width = label_width; | |
86 | pane->label_length = label_length; | |
55660072 | 87 | pane->s_list = sel; |
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88 | |
89 | /* | |
90 | * Insert the pane after the pane with the pane | |
91 | * number one less than the desired number for the | |
92 | * new pane. | |
93 | */ | |
94 | emacs_insque(pane, p_ptr); | |
95 | ||
96 | /* | |
177c0ea7 | 97 | * Update the pane count. |
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98 | */ |
99 | menu->p_count++; | |
100 | ||
101 | /* | |
102 | * Schedule a recompute. | |
103 | */ | |
104 | menu->recompute = 1; | |
105 | ||
106 | /* | |
107 | * Return the number of the pane just added. | |
108 | */ | |
109 | _XMErrorCode = XME_NO_ERROR; | |
110 | return(p_num); | |
111 | } |