66 lines
2.3 KiB
Bash
66 lines
2.3 KiB
Bash
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#!/usr/bin/env bash
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# ---------------------------------------------------------------------------
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# Apply a wallpaper with feh and remember the choice.
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#
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# set-wallpaper # restore the remembered wallpaper
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# set-wallpaper /path/img.png # set a specific image
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# set-wallpaper --random # pick a random one from the wallpaper dir
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# set-wallpaper --cache # (re)build the betterlockscreen cache
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#
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# The current selection is stored in $XDG_STATE_HOME/current-wallpaper.
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# ---------------------------------------------------------------------------
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set -uo pipefail
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WALLPAPER_DIR="${WALLPAPER_DIR:-${XDG_DATA_HOME:-$HOME/.local/share}/wallpapers}"
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STATE_DIR="${XDG_STATE_HOME:-$HOME/.local/state}"
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STATE_FILE="$STATE_DIR/current-wallpaper"
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MODE="${FEH_MODE:---bg-fill}"
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mkdir -p "$STATE_DIR" "$WALLPAPER_DIR"
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pick_random() {
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find -L "$WALLPAPER_DIR" -type f \
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\( -iname '*.png' -o -iname '*.jpg' -o -iname '*.jpeg' -o -iname '*.webp' \) \
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| shuf -n1
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}
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first_available() {
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find -L "$WALLPAPER_DIR" -type f \
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\( -iname '*.png' -o -iname '*.jpg' -o -iname '*.jpeg' -o -iname '*.webp' \) \
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| sort | head -n1
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}
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cache_lockscreen=0
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target=""
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case "${1:-}" in
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--random) target="$(pick_random)" ;;
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--cache) cache_lockscreen=1 ;;
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"") target="$(cat "$STATE_FILE" 2>/dev/null || true)" ;;
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-*) echo "unknown option: $1" >&2; exit 2 ;;
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*) target="$1"; cache_lockscreen=1 ;;
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esac
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# Fall back through: remembered -> anything in the dir -> a flat Macchiato base
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if [[ -z "$target" || ! -f "$target" ]]; then
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target="$(first_available)"
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fi
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if [[ -z "$target" || ! -f "$target" ]]; then
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echo "set-wallpaper: no image found in $WALLPAPER_DIR — using a flat colour" >&2
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command -v xsetroot >/dev/null && xsetroot -solid "#24273a"
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exit 0
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fi
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command -v feh >/dev/null || { echo "set-wallpaper: feh is not installed" >&2; exit 1; }
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feh --no-fehbg "$MODE" "$target"
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printf '%s\n' "$target" > "$STATE_FILE"
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# Keep the lock screen in sync with the desktop. Caching is slow (imagemagick
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# blurs the image at every resolution), so only do it when the image changed.
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if [[ "$cache_lockscreen" == "1" ]] && command -v betterlockscreen >/dev/null; then
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( betterlockscreen --update "$target" --blur 0.5 >/dev/null 2>&1 &
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disown ) 2>/dev/null || true
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fi
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