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#!/bin/fish
function get-valid-wallpapers
identify -ping -format '%i\n' $wallpapers_dir/** 2> /dev/null
end
set script_name (basename (status filename))
set wallpapers_dir (xdg-user-dir PICTURES)/Wallpapers
set threshold 80
# Max 0 non-option args | h, f and d are exclusive | F and t are also exclusive
argparse -n 'caelestia-wallpaper' -X 0 -x 'h,f,d' -x 'F,t' \
'h/help' \
'f/file=' \
'd/directory=' \
'F/no-filter' \
't/threshold=!_validate_int --min 0' \
'T/theme=!test $_flag_value = light -o $_flag_value = dark' \
-- $argv
or exit
. (dirname (status filename))/util.fish
if set -q _flag_h
echo 'Usage:'
echo ' caelestia wallpaper'
echo ' caelestia wallpaper [ -h | --help ]'
echo ' caelestia wallpaper [ -f | --file ] [ -T | --theme ]'
echo ' caelestia wallpaper [ -d | --directory ] [ -F | --no-filter ] [ -T | --theme ]'
echo ' caelestia wallpaper [ -d | --directory ] [ -t | --threshold ] [ -T | --theme ]'
echo
echo 'Options:'
echo ' -h, --help Print this help message and exit'
echo ' -f, --file <file> The file to change wallpaper to'
echo ' -d, --directory <directory> The folder to select a random wallpaper from (default '$wallpapers_dir')'
echo ' -F, --no-filter Do not filter by size'
echo ' -t, --threshold <threshold> The minimum percentage of the size the image must be greater than to be selected (default '$threshold')'
echo ' -T, --theme <"light" | "dark"> Set light/dark theme for dynamic scheme'
else
set state_dir $C_STATE/wallpaper
# The path to the last chosen wallpaper
set last_wallpaper_path "$state_dir/last.txt"
# Use wallpaper given as argument else choose random
if set -q _flag_f
set chosen_wallpaper (realpath $_flag_f)
if ! identify -ping $chosen_wallpaper &> /dev/null
error "$chosen_wallpaper is not a valid image"
exit 1
end
else
# The path to the directory containing the selection of wallpapers
set -q _flag_d && set wallpapers_dir (realpath $_flag_d)
if ! test -d $wallpapers_dir
error "$wallpapers_dir does not exist"
exit 1
end
# Get all files in $wallpapers_dir and exclude the last wallpaper (if it exists)
if test -f "$last_wallpaper_path"
set last_wallpaper (cat $last_wallpaper_path)
test -n "$last_wallpaper" && set unfiltered_wallpapers (get-valid-wallpapers | grep -v $last_wallpaper)
end
set -q unfiltered_wallpapers || set unfiltered_wallpapers (get-valid-wallpapers)
# Filter by resolution if no filter option is not given
if set -q _flag_F
set wallpapers $unfiltered_wallpapers
else
set -l screen_size (hyprctl monitors -j | jq -r 'max_by(.width * .height) | "\(.width)\n\(.height)"')
set -l wall_sizes (identify -ping -format '%w %h\n' $unfiltered_wallpapers)
# Apply threshold
set -q _flag_t && set threshold $_flag_t
set screen_size[1] (math $screen_size[1] x $threshold / 100)
set screen_size[2] (math $screen_size[2] x $threshold / 100)
# Add wallpapers that are larger than the screen size * threshold to list to choose from ($wallpapers)
for i in (seq 1 (count $wall_sizes))
set -l wall_size (string split ' ' $wall_sizes[$i])
if test $wall_size[1] -ge $screen_size[1] -a $wall_size[2] -ge $screen_size[2]
set -a wallpapers $unfiltered_wallpapers[$i]
end
end
end
# Check if the $wallpapers list is unset or empty
if ! set -q wallpapers || test -z "$wallpapers"
error "No valid images found in $wallpapers_dir"
exit 1
end
# Choose a random wallpaper from the $wallpapers list
set chosen_wallpaper (random choice $wallpapers)
end
# Change the wallpaper and output change if success
hyprctl hyprpaper preload $chosen_wallpaper > /dev/null
for monitor in (hyprctl -j monitors | jq -r '.[].name')
hyprctl hyprpaper wallpaper "$monitor,$chosen_wallpaper" > /dev/null && log "Changed wallpaper on $monitor to $chosen_wallpaper"
end
# Unload unused wallpapers to preserve memory
hyprctl hyprpaper unload unused > /dev/null
# Thumbnail wallpaper for colour gen
mkdir -p $C_CACHE/thumbnails
set -l thumb_path $C_CACHE/thumbnails/(sha1sum $chosen_wallpaper | cut -d ' ' -f 1).jpg
if ! test -f $thumb_path
magick -define jpeg:size=256x256 $chosen_wallpaper -thumbnail 128x128 $thumb_path
end
cp $thumb_path $state_dir/thumbnail.jpg
# Generate colour scheme for wallpaper
set -l src (dirname (status filename))
$src/scheme/gen-scheme.fish $state_dir/thumbnail.jpg dark &
$src/scheme/gen-scheme.fish $state_dir/thumbnail.jpg light &
if test -f $C_STATE/scheme/current-name.txt
set -l variant (string match -gr 'dynamic-(.*)' (cat $C_STATE/scheme/current-name.txt))
if test -n "$variant"
# Light/dark mode detection if not specified
if ! set -q _flag_T
set -l lightness (magick $state_dir/thumbnail.jpg -format '%[fx:int(mean*100)]' info:)
test $lightness -ge 60 && set _flag_T light || set _flag_T dark
end
# Wait for async scheme gen to finish
wait
# Apply scheme
caelestia scheme dynamic $variant $_flag_T > /dev/null
end
end
# Store the wallpaper chosen
mkdir -p $state_dir
echo $chosen_wallpaper > $last_wallpaper_path
ln -sf $chosen_wallpaper "$state_dir/current"
end
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