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e745ede7 DL |
1 | #include "copyright.h" |
2 | ||
3 | /* $Header: /u/src/emacs/19.0/oldXMenu/RCS/AddPane.c,v 1.1 1992/04/11 22:10:17 jimb Exp $ */ | |
4 | /* Copyright Massachusetts Institute of Technology 1985 */ | |
5 | ||
6 | /* | |
7 | * XMenu: MIT Project Athena, X Window system menu package | |
8 | * | |
9 | * XMenuAddPane - Adds a pane to an XMenu object. | |
10 | * | |
11 | * Author: Tony Della Fera, DEC | |
12 | * August, 1985 | |
13 | * | |
14 | */ | |
15 | ||
16 | #include <config.h> | |
17 | #include "XMenuInt.h" | |
18 | ||
19 | int | |
20 | XMenuAddPane(display, menu, label, active) | |
21 | Display *display; | |
22 | register XMenu *menu; /* Menu object to be modified. */ | |
23 | register char *label; /* Selection label. */ | |
24 | int active; /* Make selection active? */ | |
25 | { | |
26 | register XMPane *pane; /* Newly created pane. */ | |
27 | register XMSelect *select; /* Initial selection for the new pane. */ | |
28 | ||
29 | int label_length; /* Label length in characters. */ | |
30 | int label_width; /* Label width in pixels. */ | |
31 | ||
32 | /* | |
33 | * Check for NULL pointers! | |
34 | */ | |
35 | if (label == NULL) { | |
36 | _XMErrorCode = XME_ARG_BOUNDS; | |
37 | return(XM_FAILURE); | |
38 | } | |
39 | ||
40 | /* | |
41 | * Calloc the XMPane structure and the initial XMSelect. | |
42 | */ | |
43 | pane = (XMPane *)calloc(1, sizeof(XMPane)); | |
44 | if (pane == NULL) { | |
45 | _XMErrorCode = XME_CALLOC; | |
46 | return(XM_FAILURE); | |
47 | } | |
48 | select = (XMSelect *)calloc(1, sizeof(XMSelect)); | |
49 | if (select == NULL) { | |
50 | _XMErrorCode = XME_CALLOC; | |
51 | return(XM_FAILURE); | |
52 | } | |
53 | ||
54 | /* | |
55 | * Determine label size. | |
56 | */ | |
57 | label_length = strlen(label); | |
58 | label_width = XTextWidth(menu->p_fnt_info, | |
59 | label, | |
60 | label_length); | |
61 | ||
62 | /* | |
63 | * Set up the initial selection. | |
64 | * Values not explicitly set are zeroed by calloc. | |
65 | */ | |
66 | select->next = select; | |
67 | select->prev = select; | |
68 | select->type = SL_HEADER; | |
69 | select->serial = -1; | |
70 | select->parent_p = pane; | |
71 | ||
72 | /* | |
73 | * Fill the XMPane structure. | |
74 | * X and Y position are set to 0 since a recompute will follow. | |
75 | */ | |
76 | pane->type = PANE; | |
77 | pane->active = active; | |
78 | pane->serial = -1; | |
79 | pane->label = label; | |
80 | pane->label_width = label_width; | |
81 | pane->label_length = label_length; | |
82 | pane->s_list = select; | |
83 | ||
84 | /* | |
85 | * Insert the pane at the end of the pane list. | |
86 | */ | |
87 | emacs_insque(pane, menu->p_list->prev); | |
88 | ||
89 | /* | |
90 | * Update the pane count. | |
91 | */ | |
92 | menu->p_count++; | |
93 | ||
94 | /* | |
95 | * Schedule a recompute. | |
96 | */ | |
97 | menu->recompute = 1; | |
98 | ||
99 | /* | |
100 | * Return the pane number just added. | |
101 | */ | |
102 | _XMErrorCode = XME_NO_ERROR; | |
103 | return((menu->p_count - 1)); | |
104 | } |