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131 lines
3.3 KiB
C
131 lines
3.3 KiB
C
/* Copyright Massachusetts Institute of Technology 1985 */
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/*
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Copyright 1985, 1986, 1987 by the Massachusetts Institute of Technology
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Permission to use, copy, modify, and distribute this
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software and its documentation for any purpose and without
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fee is hereby granted, provided that the above copyright
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notice appear in all copies and that both that copyright
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notice and this permission notice appear in supporting
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documentation, and that the name of M.I.T. not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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M.I.T. makes no representations about the suitability of
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this software for any purpose. It is provided "as is"
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without express or implied warranty.
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*/
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/*
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* XMenu: MIT Project Athena, X Window system menu package
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*
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* XMenuInsertPane - Inserts a pane into an XMenu object in
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* a particular position.
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*
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* Author: Tony Della Fera, DEC
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* 20-Nov-85
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*
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*/
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#include "XMenuInt.h"
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#include <string.h>
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int
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XMenuInsertPane(register XMenu *menu, register int p_num, char *label, int active)
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/* Menu object to be modified. */
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/* Pane number of new pane. */
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/* Selection label. */
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/* Make selection active? */
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{
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register XMPane *p_ptr; /* XMPane pointer. */
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register XMPane *pane; /* Newly created pane. */
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register XMSelect *sel; /* Initial selection for the new pane. */
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int label_length; /* Label length in characters. */
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int label_width; /* Label width in pixels. */
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/*
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* Check for NULL pointers!
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*/
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if (label == NULL) {
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_XMErrorCode = XME_ARG_BOUNDS;
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return(XM_FAILURE);
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}
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/*
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* Find the pane number one less than the one specified since that
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* is the pane after which the insertion will occur.
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*/
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p_ptr = _XMGetPanePtr(menu, (p_num - 1));
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if (p_ptr == NULL) return(XM_FAILURE);
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/*
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* Calloc the XMPane structure and the initial XMSelect.
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*/
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pane = (XMPane *)calloc(1, sizeof(XMPane));
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if (pane == NULL) {
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_XMErrorCode = XME_CALLOC;
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return(XM_FAILURE);
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}
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sel = (XMSelect *)calloc(1, sizeof(XMSelect));
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if (sel == NULL) {
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_XMErrorCode = XME_CALLOC;
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return(XM_FAILURE);
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}
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/*
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* Determine label size.
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*/
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label_length = strlen(label);
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label_width = XTextWidth(menu->p_fnt_info, label, label_length);
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/*
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* Set up the initial selection.
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* Values not explicitly set are zeroed by calloc.
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*/
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sel->next = sel;
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sel->prev = sel;
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sel->type = SL_HEADER;
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sel->serial = -1;
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sel->parent_p = pane;
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/*
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* Fill the XMPane structure.
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*/
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pane->type = PANE;
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pane->active = active;
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pane->serial = -1;
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pane->label = label;
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pane->label_width = label_width;
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pane->label_length = label_length;
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pane->s_list = sel;
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/*
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* Insert the pane after the pane with the pane
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* number one less than the desired number for the
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* new pane.
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*/
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emacs_insque(pane, p_ptr);
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/*
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* Update the pane count.
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*/
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menu->p_count++;
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/*
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* Schedule a recompute.
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*/
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menu->recompute = 1;
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/*
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* Return the number of the pane just added.
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*/
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_XMErrorCode = XME_NO_ERROR;
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return(p_num);
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}
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