125 lines
4.0 KiB
C
125 lines
4.0 KiB
C
/* $NetBSD: display.c,v 1.4 2004/06/03 19:18:41 christos Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Juergen Hannken-Illjes.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <err.h>
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#include <dev/wscons/wsconsio.h>
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#include "wsconsctl.h"
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static int dpytype;
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static struct wsdisplay_usefontdata font;
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static struct wsdisplay_scroll_data scroll_l;
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static int havescroll = 1;
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struct field display_field_tab[] = {
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{ "type", &dpytype, FMT_DPYTYPE, FLG_RDONLY },
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{ "font", &font.name, FMT_STRING, FLG_WRONLY },
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{ "scroll.fastlines", &scroll_l.fastlines, FMT_UINT, FLG_MODIFY },
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{ "scroll.slowlines", &scroll_l.slowlines, FMT_UINT, FLG_MODIFY },
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};
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int display_field_tab_len = sizeof(display_field_tab)/
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sizeof(display_field_tab[0]);
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static int
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init_values(void)
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{
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scroll_l.which = 0;
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if (field_by_value(&scroll_l.fastlines)->flags & FLG_GET)
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scroll_l.which |= WSDISPLAY_SCROLL_DOFASTLINES;
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if (field_by_value(&scroll_l.slowlines)->flags & FLG_GET)
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scroll_l.which |= WSDISPLAY_SCROLL_DOSLOWLINES;
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return scroll_l.which;
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}
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void
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display_get_values(fd)
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int fd;
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{
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if (field_by_value(&dpytype)->flags & FLG_GET)
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if (ioctl(fd, WSDISPLAYIO_GTYPE, &dpytype) < 0)
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err(1, "WSDISPLAYIO_GTYPE");
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if (init_values() == 0 || havescroll == 0)
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return;
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if (ioctl(fd, WSDISPLAYIO_DGSCROLL, &scroll_l) < 0) {
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if (errno != ENODEV)
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err(1, "WSDISPLAYIO_GSCROLL");
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else
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havescroll = 0;
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}
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}
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void
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display_put_values(fd)
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int fd;
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{
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if (field_by_value(&font.name)->flags & FLG_SET) {
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if (ioctl(fd, WSDISPLAYIO_SFONT, &font) < 0)
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err(1, "WSDISPLAYIO_SFONT");
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pr_field(field_by_value(&font.name), " -> ");
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}
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if (init_values() == 0 || havescroll == 0)
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return;
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if (scroll_l.which & WSDISPLAY_SCROLL_DOFASTLINES)
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pr_field(field_by_value(&scroll_l.fastlines), " -> ");
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if (scroll_l.which & WSDISPLAY_SCROLL_DOSLOWLINES)
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pr_field(field_by_value(&scroll_l.slowlines), " -> ");
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if (ioctl(fd, WSDISPLAYIO_DSSCROLL, &scroll_l) < 0) {
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if (errno != ENODEV)
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err (1, "WSDISPLAYIO_DSSCROLL");
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else {
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warnx("scrolling is not supported by this kernel");
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havescroll = 0;
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}
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}
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}
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