openbsd-backgrounds

[unicorn]

I had installed openbsd-backgrounds, how to use it? thanks

[jggimi]

If you are using the default X11 display manager xenodm(1), then /usr/local/bin/openbsd-wallpaper will be executed for you on log in. If not, you'll have to provision the script manually.

[unicorn]

I use xendom, but it's the same as before, there's no wallpaper shown.

[jggimi]

Check provisioning. Do you have the xwallpaper package installed? It is not an automatically installed dependency, but the package description for openbsd-backgrounds description notes it as a requirement. It probably should be a dependency so that it gets automatically installed.

$ pkg_info openbsd-backgrounds
Information for inst:openbsd-backgrounds-3.1

Comment:
pictures for your background by OpenBSD developers

Description:
This is a compilation of photos taken by OpenBSD developers,
suitable for use as background pictures.

Those pictures have been released under CC-By 4.0 by the individual artists.

This comes with a small script (openbsd-wallpaper)
that requires a recent xwallpaper to run

Maintainer: Marc Espie <[deprecated]>

WWW: https://github.com/marcespie/openbsd-backgrounds

[jggimi]

My mistake, xwallpaper is already is identified as a dependency, and has been since 2019. So xwallpaper should be already installed.

I misremembered my provisioning. I'm sorry.

I had manually edited /etc/X11/xenodm/Xsetup_0, which -- by default -- has a call to /usr/local/bin/openbsd-wallpaper commented out. I'd uncommented it.

[unicorn]

I had uncommented lines below # then uncomment in /etc/X11/xenodm/Xsetup_0, and then run command rcctl restart xenodm && exit, but wallpaper didn't show up.

[jggimi]

Double check your changes. The contents of /etc/X11/xenodm/Xsetup_0 should look like this:

#!/bin/sh
# $OpenBSD: Xsetup_0.in,v 1.1 2021/08/30 15:38:27 matthieu Exp $

prefix="/usr/X11R6"
exec_prefix="${prefix}"

${exec_prefix}/bin/xsetroot -fg \#6f6f6f -bg \#bfbfbf -bitmap ${prefix}/include/X11/bitmaps/root_weave

${exec_prefix}/bin/xconsole -geometry 480x130-0-0 -daemon -notify -verbose -fn fixed -exitOnFail

#  install package openbsd-backgrounds
#  then uncomment:
#
 if test -x /usr/local/bin/openbsd-wallpaper
 then
     /usr/local/bin/openbsd-wallpaper
 fi

 sxpm OpenBSD.xpm &

[unicorn]

it's OK now, very good wallpapers!

[unicorn]

How to let wallpaper automatically fill my screen? the wallpaper is not fullscreen

[Head_on_a_Stick]

You could edit /usr/local/bin/openbsd-wallpaper and change line 51 to:

    args="$args --output $display --zoom $pic"

That will result in image clipping though; the standard --maximize option doesn't clip but adds black bars instead, which I presume is what you mean by "not fullscreen".

The --zoom option is actually the default so you could also just delete "--maximize" from that line.

[unicorn]

why my openbsd-wallpaper file's content differ from your's? my file have more than 100 lines. Shoud I replace it with your code?
my wallpaper has black blank on both sides horizontally.

[Head_on_a_Stick]

I linked to OpenBSD's GitHub mirror, which shows the contents of the file in -current, the file hasn't been changed in 2 years so I am surprised yours is different.

Do you have a line with "--maximize"? If you share your version of the script I can tell you what to change.

Please remember to use [code][/code] tags when posting terminal output. Thanks.

[unicorn]

see my file

#! /usr/bin/perl
# 
# Copyright (c) 2019 Marc Espie <espie@openbsd.org>
# 
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
# 
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
# 
use strict;
use warnings;

use List::Util;
use File::Find;
use OpenBSD::Subst;

sub farey
{
	my ($x, $N) = @_;
    	my ($a, $b) = (0, 1);
    	my ($c, $d) = (1, 0);
	while ($b <= $N && $d <= $N) {
		my $mediant = ($a+$c)/($b+$d);
		if ($x == $mediant) {
			if ($b + $d <= $N) {
				return ($a+$c, $b+$d);
			} elsif ($d > $b) {
				return ($c, $d);
			} else {
				return ($a, $b);
			}
		} elsif ($x > $mediant) {
			($a, $b) = ($a+$c, $b+$d);
		} else {
			($c, $d) = ($a+$c, $b+$d);
		}
	}
	if ($b > $N) {
		return ($c, $d);
	} else {
		return ($a, $b);
	}
}

sub add_dir
{
	my ($l, $dir) = @_;
	if (!-d $dir) {
		$dir = 'pictures';
	}
	find(
	    sub { 
		push @$l, $File::Find::name if -f $_; 
	    }, $dir);
}

my $s = OpenBSD::Subst->new;
$s->add('TRUEPREFIX' => '/usr/local');
$s->add('LOCALBASE' => '/usr/local');

my $prefix = $s->do('/usr/local');
my $localbase = $s->do('/usr/local');

if (!-x "$localbase/bin/xwallpaper") {
	print STDERR "You must pkg_add xwallpaper\n";
	exit 1;
}
my $imagedir = "$prefix/share/openbsd-backgrounds";
if (@ARGV != 0) {
	$imagedir = shift;
}
$ENV{PATH} = "${localbase}/bin:/usr/bin:/usr/X11R6/bin";

open(my $pipe, "-|", "xrandr") or die "Can't run xrandr: $!";
my $monitors = {};

while (<$pipe>) {
	chomp;
	next unless m/\bconnected\b/;
	my ($name, undef, @r) = split(/\s+/, $_);
	my $monitor = $monitors->{$name} = {name => $name};
	if ($r[0] eq 'primary') {
		$monitor->{primary} = 1;
		shift @r;
	}
	my $res = shift @r;
	if ($res =~ m/(\d+)x(\d+)\+\d+\+\d+/) {
		($monitor->{a}, $monitor->{b}) = farey($1/$2, 25);
	}
	$monitor->{portrait} = ($r[0] eq 'left' or $r[0] eq 'right');
}
close($pipe);

chdir($imagedir) or die $!;

my @command = (qw(xwallpaper));
# build the command on each monitor
for my $m (values %$monitors) {
	my @l;
	my $ratio = "$m->{a}:$m->{b}";
	my $i = "aspect-$ratio";
	# let's cheat a bit
	if (!-r $i && $ratio eq '5:8') {
		$i = 'aspect-9:16';
	}
	if (-r $i) {
		open my $file, "<", $i;
		while (<$file>) {
			chomp;
			if (m/^\+(.*)/) {
				add_dir(\@l, $1);
			}
			push(@l, $_);
		}
	} else {
		my $dir = $m->{a} < $m->{b} ? "portrait" : "landscape";
		add_dir(\@l, $dir);
	}
	@l = (List::Util::shuffle @l);
	my @r = split(/\s+/, $l[0]);
	unshift(@r, '--maximize') if @r == 1;
	push(@command, '--output', $m->{name}, @r);
}
print "Running ", join(' ', @command), "\n";
exec {$command[0]} @command;

[Head_on_a_Stick]

From the bottom of the script, 5th line up:

Originally Posted by unicorn

	unshift(@r, '--maximize') if @r == 1;
	push(@command, '--output', $m->{name}, @r);
}
print "Running ", join(' ', @command), "\n";
exec {$command[0]} @command;

Change '--maximize' to '--zoom'.

Disclaimer: I don't know perl

[unicorn]

it works! thanks man

[unicorn]

my wallpaper can't show fullscreen with OpenBSD 7.7, below is my /etc/X11/xenodm/Xsetup_0 contents, how to edit it, thanks!

#!/bin/sh
# $OpenBSD: Xsetup_0.in,v 1.1 2021/08/30 15:38:27 matthieu Exp $

prefix="/usr/X11R6"
exec_prefix="${prefix}"

${exec_prefix}/bin/xsetroot -fg \#6f6f6f -bg \#bfbfbf -bitmap ${prefix}/include/X11/bitmaps/root_weave

${exec_prefix}/bin/xconsole -geometry 480x130-0-0 -daemon -notify -verbose -fn fixed -exitOnFail

#  install package openbsd-backgrounds
#  then uncomment:

 if test -x /usr/local/bin/openbsd-wallpaper

  then
 	/usr/local/bin/openbsd-wallpaper
 fi

 sxpm OpenBSD.xpm &

[shep]

Monitors come in different aspect ratios - you can get the output the resolution of the wallpaper files, file(1) and compare it to the output of xrandr(1).

It would be possible but tedious to match the wallpaper files to your screen size using graphics/ImageMagick, graphics/gimp.

[Onauk]

Originally Posted by shep

It would be possible but tedious to match the wallpaper files to your screen size using graphics/imagemagic, graphics/gimp.

I think you meant graphics/ImageMagick. The documentation of this software is really good, you can look at resizing images here:

https://usage.imagemagick.org/resize/#resize