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122 lines
2.9 KiB
C
122 lines
2.9 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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* XMenuAddPane - Adds a pane to an XMenu object.
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*
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* Author: Tony Della Fera, DEC
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* August, 1985
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*
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*/
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#include <string.h>
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#include "XMenuInt.h"
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int
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XMenuAddPane(Display *display, register XMenu *menu, register char const *label, int active)
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/* Menu object to be modified. */
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/* Selection label. */
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/* Make selection active? */
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{
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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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* 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,
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label,
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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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* X and Y position are set to 0 since a recompute will follow.
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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 at the end of the pane list.
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*/
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emacs_insque(pane, menu->p_list->prev);
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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 pane number just added.
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*/
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_XMErrorCode = XME_NO_ERROR;
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return((menu->p_count - 1));
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}
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