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|
#! /usr/bin/env sh
main()
{
# Load custom configuration if available
if [ -f "$HOME/.local/etc/x/chwp" ]
then
. "$HOME/.local/etc/x/chwp"
fi
directory=${CHWP_BASEDIR:-$HOME/pictures/wallpapers}
size=${CHWP_SIZE:-1920x1080}
timeout=${1:-0}
walldir=$directory/$size
# Fail early if there's no wallpaper directory
if [ ! -d "$walldir" ]
then
printf "No such directory: %s\n" "$walldir" >&2
exit 1
fi
CACHEFILE="$(mktemp)"
find "${walldir}" -type f > "$CACHEFILE"
# If no timeout was set, just change it once
if [ "$timeout" -eq 0 ]
then
set_papes
exit
fi
# Otherwise, change it every so often
while :
do
set_papes
sleep "${timeout}"
done
}
set_papes()
{
pape="$(make_pape)"
feh --bg-fill "$pape"
rm -f -- "$pape"
}
make_pape()
{
output="$(mktemp)"
imagelist="$(mktemp)"
monitorlist="$(mktemp)"
xrandr -q | grep -F ' connected ' > "$monitorlist"
while read -r monitor
do
if [ -f "$HOME/.local/etc/x/chwp-filter" ]
then
if printf "%s" "$monitor" | grep -qf "$HOME/.local/etc/x/chwp-filter"
then
printf "Filtering %s\n" "$monitor" >&2
continue
fi
fi
resolution="$(printf "%s" "$monitor" | grep -Eo '\b[[:digit:]]+x[[:digit:]]+')"
current_pape=$(get_pape "$resolution")
if [ "$current_pape" = "" ]
then
printf "No wallpapers for %s\n" "$resolution" >&2
current_pape="$(mktemp --tmpdir XXXXX.png)"
convert -size "$resolution" canvas:gray "$current_pape"
fi
printf '"%s"\n' "$current_pape" >> "$imagelist"
unset resolution
unset current_pape
done < "$monitorlist"
# shellcheck disable=SC2046
# shellcheck disable=SC2086
eval convert +append $(cat $imagelist) "$output"
printf "%s" "$output"
rm -f -- "$imagelist"
}
get_pape()
{
if [ ! -d "$directory/$1" ]
then
return 1
fi
printf "%s\n" "$(find "$directory/$1" -type f | shuf | head -n 1)"
}
main "$@"
|
