mirror of
https://github.com/arthur-pbty/arthur-os.git
synced 2026-08-01 20:28:16 +02:00
Add a simple way to set the screensaver to an ascii version of an image
This commit is contained in:
Ryan Hughes
@@ -55,6 +55,7 @@ GROUP_DESCRIPTIONS[reinstall]="Reinstall and reset workflows"
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GROUP_DESCRIPTIONS[remove]="Removal workflows"
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GROUP_DESCRIPTIONS[restart]="Restart Omarchy components"
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GROUP_DESCRIPTIONS[setup]="Interactive setup wizards"
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GROUP_DESCRIPTIONS[screensaver]="Screensaver branding and animation"
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GROUP_DESCRIPTIONS[snapshot]="System snapshots"
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GROUP_DESCRIPTIONS[state]="Persistent Omarchy state"
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GROUP_DESCRIPTIONS[sudo]="Sudo configuration helpers"
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+25
-1
@@ -217,12 +217,36 @@ show_style_menu() {
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*Font*) show_font_menu ;;
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*Background*) show_background_menu ;;
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*Hyprland*) open_in_editor ~/.config/hypr/looknfeel.conf ;;
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*Screensaver*) open_in_editor ~/.config/omarchy/branding/screensaver.txt ;;
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*Screensaver*) show_screensaver_menu ;;
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*About*) open_in_editor ~/.config/omarchy/branding/about.txt ;;
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*) show_main_menu ;;
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esac
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}
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show_screensaver_menu() {
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case $(menu "Screensaver" " Set From Image\n Restore Default\n Edit Text\n Preview") in
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*Image*) set_screensaver_from_image ;;
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*Default*) terminal bash -lc 'omarchy-screensaver-set-logo default; echo; read -n 1 -s -r -p "Press any key to close..."' ;;
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*Text*) open_in_editor ~/.config/omarchy/branding/screensaver.txt ;;
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*Preview*) omarchy-launch-screensaver force ;;
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*) show_style_menu ;;
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esac
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}
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set_screensaver_from_image() {
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terminal bash -lc '
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image=$(fd --type file --ignore-case --extension svg --extension png . "$HOME" 2>/dev/null | fzf --prompt "Logo image> ")
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if [[ -n $image ]]; then
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if omarchy-screensaver-set-logo "$image"; then
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echo
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echo "Preview with: omarchy-launch-screensaver force"
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fi
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echo
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read -n 1 -s -r -p "Press any key to close..."
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fi
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'
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}
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show_theme_menu() {
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omarchy-launch-walker -m menus:omarchythemes --width 800 --minheight 400
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}
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Executable
+384
@@ -0,0 +1,384 @@
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#!/bin/bash
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# omarchy:summary=Set the screensaver logo text from an SVG/PNG or the default
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# omarchy:args=<default|path-to-logo.svg|png> [--width <columns>] [--height <rows>] [--mode <braille|block>] [--threshold <percent>] [--invert] [--stdout]
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# omarchy:examples=omarchy screensaver set logo ~/logo.svg | omarchy screensaver set logo default | omarchy screensaver set logo ~/logo.png --width 80 --mode block --stdout
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set -o pipefail
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usage() {
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cat <<'EOF'
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Usage: omarchy-screensaver-set-logo <default|path-to-logo.svg|png> [options]
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Sets the screensaver logo text from an image.
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Pass "default" instead of an image path to restore the Omarchy default.
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By default, writes to ~/.config/omarchy/branding/screensaver.txt.
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Options:
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-w, --width <columns> Maximum output width in terminal columns (default: 80)
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-H, --height <rows> Maximum output height in terminal rows (default: 26)
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-m, --mode <braille|block> Output style (default: braille)
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-t, --threshold <percent> Pixel threshold from 0-100 (default: 50)
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--invert Treat light pixels as the logo instead of dark pixels
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--no-trim Preserve surrounding whitespace/background
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--stdout Print converted text instead of writing the screensaver file
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--help Show this help
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EOF
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}
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width=80
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height=26
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mode=braille
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threshold=50
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invert=false
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trim=true
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output_path="$HOME/.config/omarchy/branding/screensaver.txt"
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image_path=""
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reset_default=false
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while (($# > 0)); do
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case "$1" in
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--help)
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usage
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exit 0
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;;
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-w | --width)
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shift
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if [[ -z $1 ]]; then
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echo "Missing value for --width" >&2
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exit 1
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fi
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width="$1"
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;;
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--width=*)
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width="${1#*=}"
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;;
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-H | --height)
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shift
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if [[ -z $1 ]]; then
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echo "Missing value for --height" >&2
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exit 1
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fi
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height="$1"
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;;
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--height=*)
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height="${1#*=}"
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;;
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-m | --mode)
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shift
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if [[ -z $1 ]]; then
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echo "Missing value for --mode" >&2
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exit 1
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fi
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mode="$1"
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;;
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--mode=*)
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mode="${1#*=}"
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;;
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--block | --blocks)
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mode=block
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;;
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--braille)
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mode=braille
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;;
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-t | --threshold)
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shift
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if [[ -z $1 ]]; then
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echo "Missing value for --threshold" >&2
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exit 1
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fi
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threshold="$1"
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;;
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--threshold=*)
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threshold="${1#*=}"
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;;
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--invert)
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invert=true
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;;
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--no-trim)
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trim=false
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;;
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--stdout)
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output_path="-"
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;;
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--)
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shift
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break
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;;
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-*)
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echo "Unknown option: $1" >&2
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usage >&2
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exit 1
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;;
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*)
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if [[ $1 == "default" && -z $image_path ]]; then
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reset_default=true
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elif [[ -z $image_path ]]; then
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image_path="$1"
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else
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echo "Unexpected argument: $1" >&2
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usage >&2
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exit 1
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fi
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;;
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esac
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shift
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done
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if (($# > 0)); then
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while (($# > 0)); do
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if [[ $1 == "default" && -z $image_path ]]; then
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reset_default=true
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elif [[ -z $image_path ]]; then
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image_path="$1"
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else
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echo "Unexpected argument: $1" >&2
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usage >&2
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exit 1
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fi
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shift
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done
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fi
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if [[ $reset_default == "true" ]]; then
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if [[ -n $image_path ]]; then
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echo "default does not accept an image path" >&2
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exit 1
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fi
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default_path="${OMARCHY_PATH:-$HOME/.local/share/omarchy}/logo.txt"
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if [[ ! -f $default_path ]]; then
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echo "Default screensaver logo text not found: $default_path" >&2
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exit 1
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fi
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if [[ $output_path == "-" ]]; then
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cat "$default_path"
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else
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mkdir -p "$(dirname "$output_path")"
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cp "$default_path" "$output_path"
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echo "Restored default screensaver logo text to $output_path"
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fi
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exit 0
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fi
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if [[ -z $image_path ]]; then
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usage >&2
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exit 1
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fi
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if ! [[ $width =~ ^[0-9]+$ ]] || (( width < 1 )); then
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echo "Invalid width: $width" >&2
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exit 1
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fi
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if ! [[ $height =~ ^[0-9]+$ ]] || (( height < 1 )); then
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echo "Invalid height: $height" >&2
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exit 1
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fi
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if [[ $mode != "braille" && $mode != "block" ]]; then
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echo "Invalid mode: $mode (expected braille or block)" >&2
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exit 1
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fi
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if ! [[ $threshold =~ ^[0-9]+$ ]] || (( threshold < 0 || threshold > 100 )); then
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echo "Invalid threshold: $threshold (expected 0-100)" >&2
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exit 1
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fi
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if [[ ! -f $image_path ]]; then
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echo "Logo file not found: $image_path" >&2
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exit 1
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fi
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if omarchy-cmd-missing magick; then
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echo "ImageMagick is required to convert logo images" >&2
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exit 1
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fi
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case "$mode" in
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braille)
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pixel_width=$((width * 2))
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pixel_height=$((height * 4))
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;;
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block)
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pixel_width=$width
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pixel_height=$((height * 2))
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;;
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esac
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alpha_min=$(magick -background none "$image_path" -alpha extract -format '%[fx:minima]' info: 2>/dev/null) || {
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echo "Unable to read logo image: $image_path" >&2
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exit 1
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}
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alpha_max=$(magick -background none "$image_path" -alpha extract -format '%[fx:maxima]' info: 2>/dev/null) || {
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echo "Unable to read logo image: $image_path" >&2
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exit 1
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}
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use_alpha=false
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if awk -v min="$alpha_min" -v max="$alpha_max" 'BEGIN { exit !(min < 0.999 && max > min) }'; then
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use_alpha=true
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fi
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magick_args=(-background none "$image_path" -auto-orient)
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if [[ $use_alpha == "true" ]]; then
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magick_args+=(-alpha extract -alpha off)
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if [[ $invert == "true" ]]; then
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magick_args+=(-negate)
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fi
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else
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magick_args+=(-alpha remove -alpha off -colorspace Gray)
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if [[ $invert == "false" ]]; then
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magick_args+=(-negate)
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fi
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fi
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if [[ $trim == "true" ]]; then
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magick_args+=(-bordercolor black -border 1 -trim +repage)
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fi
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magick_args+=(-resize "${pixel_width}x${pixel_height}" -threshold "${threshold}%" -negate -compress none pbm:-)
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tmp_output=$(mktemp)
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trap 'rm -f "$tmp_output"' EXIT
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if [[ $mode == "braille" ]]; then
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if ! magick "${magick_args[@]}" | awk '
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BEGIN {
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braille_base = 10240
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dot[0,0] = 1
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dot[0,1] = 2
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dot[0,2] = 4
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dot[1,0] = 8
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dot[1,1] = 16
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dot[1,2] = 32
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dot[0,3] = 64
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dot[1,3] = 128
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}
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{
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sub(/#.*/, "")
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for (i = 1; i <= NF; i++) {
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token[++token_count] = $i
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}
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}
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END {
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if (token[1] != "P1") {
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exit 1
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}
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width = token[2]
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height = token[3]
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pixel_offset = 4
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for (y = 0; y < height; y += 4) {
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line = ""
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for (x = 0; x < width; x += 2) {
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code = 0
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for (dy = 0; dy < 4; dy++) {
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for (dx = 0; dx < 2; dx++) {
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if (y + dy < height && x + dx < width) {
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pixel = token[pixel_offset + ((y + dy) * width) + x + dx]
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if (pixel == 1) {
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code += dot[dx,dy]
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}
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}
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}
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}
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if (code == 0) {
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line = line " "
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} else {
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line = line sprintf("%c", braille_base + code)
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}
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}
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sub(/[ ]+$/, "", line)
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lines[++line_count] = line
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}
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first = 1
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while (first <= line_count && lines[first] ~ /^[ ]*$/) {
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first++
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}
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last = line_count
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while (last >= first && lines[last] ~ /^[ ]*$/) {
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last--
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}
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for (i = first; i <= last; i++) {
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print lines[i]
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}
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}
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' >"$tmp_output"; then
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echo "Unable to convert logo image: $image_path" >&2
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exit 1
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fi
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else
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if ! magick "${magick_args[@]}" | awk '
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BEGIN {
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block["11"] = "█"
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block["10"] = "▀"
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block["01"] = "▄"
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block["00"] = " "
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}
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{
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sub(/#.*/, "")
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for (i = 1; i <= NF; i++) {
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token[++token_count] = $i
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}
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}
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END {
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if (token[1] != "P1") {
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exit 1
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}
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width = token[2]
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height = token[3]
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pixel_offset = 4
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for (y = 0; y < height; y += 2) {
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line = ""
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for (x = 0; x < width; x++) {
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top = token[pixel_offset + (y * width) + x]
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bottom = (y + 1 < height) ? token[pixel_offset + ((y + 1) * width) + x] : 0
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line = line block[top bottom]
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}
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sub(/[ ]+$/, "", line)
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lines[++line_count] = line
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}
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first = 1
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while (first <= line_count && lines[first] ~ /^[ ]*$/) {
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first++
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}
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last = line_count
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while (last >= first && lines[last] ~ /^[ ]*$/) {
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last--
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}
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for (i = first; i <= last; i++) {
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print lines[i]
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}
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}
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' >"$tmp_output"; then
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echo "Unable to convert logo image: $image_path" >&2
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exit 1
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fi
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fi
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if [[ ! -s $tmp_output ]]; then
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echo "No logo pixels found in: $image_path" >&2
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exit 1
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fi
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if [[ $output_path == "-" ]]; then
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cat "$tmp_output"
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else
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mkdir -p "$(dirname "$output_path")"
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cp "$tmp_output" "$output_path"
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echo "Wrote screensaver logo text to $output_path"
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fi
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Reference in New Issue
Block a user