1/* Copyright    Massachusetts Institute of Technology    1985	*/
2
3#include "copyright.h"
4
5/*
6 * XMenu:	MIT Project Athena, X Window system menu package
7 *
8 * 	XMenuAddPane - Adds a pane to an XMenu object.
9 *
10 *	Author:		Tony Della Fera, DEC
11 *			August, 1985
12 *
13 */
14
15#include <config.h>
16#include "XMenuInt.h"
17
18int
19XMenuAddPane(display, menu, label, active)
20    Display *display;
21    register XMenu *menu;	/* Menu object to be modified. */
22    register char *label;	/* Selection label. */
23    int active;			/* Make selection active? */
24{
25    register XMPane *pane;	/* Newly created pane. */
26    register XMSelect *select;	/* Initial selection for the new pane. */
27
28    int label_length;		/* Label length in characters. */
29    int label_width;		/* Label width in pixels. */
30
31    /*
32     * Check for NULL pointers!
33     */
34    if (label == NULL) {
35	_XMErrorCode = XME_ARG_BOUNDS;
36	return(XM_FAILURE);
37    }
38
39    /*
40     * Calloc the XMPane structure and the initial XMSelect.
41     */
42    pane = (XMPane *)calloc(1, sizeof(XMPane));
43    if (pane == NULL) {
44	_XMErrorCode = XME_CALLOC;
45	return(XM_FAILURE);
46    }
47    select = (XMSelect *)calloc(1, sizeof(XMSelect));
48    if (select == NULL) {
49	_XMErrorCode = XME_CALLOC;
50	return(XM_FAILURE);
51    }
52
53    /*
54     * Determine label size.
55     */
56    label_length = strlen(label);
57    label_width = XTextWidth(menu->p_fnt_info,
58			     label,
59			     label_length);
60
61    /*
62     * Set up the initial selection.
63     * Values not explicitly set are zeroed by calloc.
64     */
65    select->next = select;
66    select->prev = select;
67    select->type = SL_HEADER;
68    select->serial = -1;
69    select->parent_p = pane;
70
71    /*
72     * Fill the XMPane structure.
73     * X and Y position are set to 0 since a recompute will follow.
74     */
75    pane->type = PANE;
76    pane->active = active;
77    pane->serial = -1;
78    pane->label = label;
79    pane->label_width = label_width;
80    pane->label_length = label_length;
81    pane->s_list = select;
82
83    /*
84     * Insert the pane at the end of the pane list.
85     */
86    emacs_insque(pane, menu->p_list->prev);
87
88    /*
89     * Update the pane count.
90     */
91    menu->p_count++;
92
93    /*
94     * Schedule a recompute.
95     */
96    menu->recompute = 1;
97
98    /*
99     * Return the pane number just added.
100     */
101    _XMErrorCode = XME_NO_ERROR;
102    return((menu->p_count - 1));
103}
104
105/* arch-tag: 62a26021-f29d-48ba-96ef-3b6c4ebd6547
106   (do not change this comment) */
107