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#include "copyright.h"
/* $Header: /cvs/emacs/oldXMenu/AddPane.c,v 1.1 1999/10/03 19:34:51 fx Exp $ */
/* Copyright Massachusetts Institute of Technology 1985 */
/*
* XMenu: MIT Project Athena, X Window system menu package
*
* XMenuAddPane - Adds a pane to an XMenu object.
*
* Author: Tony Della Fera, DEC
* August, 1985
*
*/
#include <config.h>
#include "XMenuInt.h"
int
XMenuAddPane(display, menu, label, active)
Display *display;
register XMenu *menu; /* Menu object to be modified. */
register char *label; /* Selection label. */
int active; /* Make selection active? */
{
register XMPane *pane; /* Newly created pane. */
register XMSelect *select; /* Initial selection for the new pane. */
int label_length; /* Label length in characters. */
int label_width; /* Label width in pixels. */
/*
* Check for NULL pointers!
*/
if (label == NULL) {
_XMErrorCode = XME_ARG_BOUNDS;
return(XM_FAILURE);
}
/*
* Calloc the XMPane structure and the initial XMSelect.
*/
pane = (XMPane *)calloc(1, sizeof(XMPane));
if (pane == NULL) {
_XMErrorCode = XME_CALLOC;
return(XM_FAILURE);
}
select = (XMSelect *)calloc(1, sizeof(XMSelect));
if (select == NULL) {
_XMErrorCode = XME_CALLOC;
return(XM_FAILURE);
}
/*
* Determine label size.
*/
label_length = strlen(label);
label_width = XTextWidth(menu->p_fnt_info,
label,
label_length);
/*
* Set up the initial selection.
* Values not explicitly set are zeroed by calloc.
*/
select->next = select;
select->prev = select;
select->type = SL_HEADER;
select->serial = -1;
select->parent_p = pane;
/*
* Fill the XMPane structure.
* X and Y position are set to 0 since a recompute will follow.
*/
pane->type = PANE;
pane->active = active;
pane->serial = -1;
pane->label = label;
pane->label_width = label_width;
pane->label_length = label_length;
pane->s_list = select;
/*
* Insert the pane at the end of the pane list.
*/
emacs_insque(pane, menu->p_list->prev);
/*
* Update the pane count.
*/
menu->p_count++;
/*
* Schedule a recompute.
*/
menu->recompute = 1;
/*
* Return the pane number just added.
*/
_XMErrorCode = XME_NO_ERROR;
return((menu->p_count - 1));
}
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