1/* Copyright    Massachusetts Institute of Technology    1985	*/
2
3#include "copyright.h"
4
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
20int
21XMenuInsertPane(menu, p_num, label, active)
22    register XMenu *menu;	/* Menu object to be modified. */
23    register int p_num;		/* Pane number of new pane. */
24    char *label;		/* Selection label. */
25    int active;			/* Make selection active? */
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. */
30
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    /*
98     * Update the pane count.
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}
113
114/* arch-tag: ab94d53d-f05b-4273-82d3-f1b01eb9dc9e
115   (do not change this comment) */
116