arrows.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright (c) 1985 AT&T
* All Rights Reserved
*/
#ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.9 */
#include <stdio.h>
#include <curses.h>
#include "winp.h"
#include "wish.h"
#include "ctl.h"
#include "fmacs.h"
#include "vtdefs.h"
/*
* SETARROWS is used to set/clear scroll indicators for both
* single-line and multi-line scrollable fields
*/
setarrows()
{
register unsigned line;
register int ch, savecol;
line = 0;
if (!(Flags & I_SCROLL))
vt_ctl(VT_UNDEFINED, CTSETSARROWS, 0);
else if (Cfld->rows == 1) {
vt_ctl(VT_UNDEFINED, CTSETSARROWS, 0);
savecol = Cfld->curcol;
if (Buffoffset > 0)
line |= VT_UPSARROW;
if ((Buffoffset + Cfld->cols + 1) < Bufflast)
line |= VT_DNSARROW;
if (line & VT_UPSARROW) {
if (line & VT_DNSARROW)
ch = '=';
else
ch = '<';
}
else if (line & VT_DNSARROW) {
if (line & VT_UPSARROW)
ch = '=';
else
ch = '>';
}
else
ch = ' ';
fgo(0, LASTCOL + 1);
fputchar(ch);
fgo(0, savecol);
}
else {
/*
* If the field takes up the entire frame
* or is a text object, then use the
* scroll box rather than the scroll indicators
*/
if (Buffoffset > 0)
line |= (Flags & (I_FULLWIN | I_TEXT)) ? VT_UPPARROW : VT_UPSARROW;
if ((Valptr != NULL) || ((Buffoffset + FIELDBYTES) < Bufflast))
line |= (Flags & (I_FULLWIN | I_TEXT)) ? VT_DNPARROW : VT_DNSARROW;
vt_ctl(VT_UNDEFINED, (Flags & (I_FULLWIN | I_TEXT)) ?
CTSETPARROWS : CTSETSARROWS, line);
}
}