61 lines
2.3 KiB
Bash
61 lines
2.3 KiB
Bash
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#!/usr/bin/env bash
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# ---------------------------------------------------------------------------
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# Minimal xrandr multi-monitor switcher.
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# display auto | duplicate | extend | internal | external | list
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# "internal" is whichever output name looks like a laptop panel.
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# ---------------------------------------------------------------------------
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set -uo pipefail
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command -v xrandr >/dev/null || { echo "xrandr not installed" >&2; exit 1; }
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mapfile -t CONNECTED < <(xrandr --query | awk '/ connected/{print $1}')
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INTERNAL="$(printf '%s\n' "${CONNECTED[@]}" | grep -m1 -E '^(eDP|LVDS|DSI)' || true)"
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[[ -z "$INTERNAL" ]] && INTERNAL="${CONNECTED[0]:-}"
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mapfile -t EXTERNALS < <(printf '%s\n' "${CONNECTED[@]}" | grep -v "^${INTERNAL}$" || true)
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reload_bar() { "$HOME/.config/polybar/launch.sh" >/dev/null 2>&1 & }
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restore_bg() { "$HOME/.local/bin/set-wallpaper" >/dev/null 2>&1 & }
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case "${1:-auto}" in
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list)
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xrandr --query | grep -E ' connected|disconnected' ; exit 0 ;;
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internal)
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args=(--output "$INTERNAL" --auto --primary)
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for e in "${EXTERNALS[@]}"; do args+=(--output "$e" --off); done
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xrandr "${args[@]}" ;;
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external)
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if [[ ${#EXTERNALS[@]} -eq 0 ]]; then echo "no external display connected" >&2; exit 1; fi
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args=(--output "${EXTERNALS[0]}" --auto --primary --output "$INTERNAL" --off)
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for e in "${EXTERNALS[@]:1}"; do args+=(--output "$e" --off); done
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xrandr "${args[@]}" ;;
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duplicate)
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if [[ ${#EXTERNALS[@]} -eq 0 ]]; then echo "no external display connected" >&2; exit 1; fi
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args=(--output "$INTERNAL" --auto --primary)
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for e in "${EXTERNALS[@]}"; do args+=(--output "$e" --auto --same-as "$INTERNAL"); done
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xrandr "${args[@]}" ;;
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extend)
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if [[ ${#EXTERNALS[@]} -eq 0 ]]; then echo "no external display connected" >&2; exit 1; fi
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args=(--output "$INTERNAL" --auto --primary)
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prev="$INTERNAL"
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for e in "${EXTERNALS[@]}"; do
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args+=(--output "$e" --auto --right-of "$prev")
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prev="$e"
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done
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xrandr "${args[@]}" ;;
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auto)
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# Extend if something external is plugged in, otherwise laptop panel only.
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if [[ ${#EXTERNALS[@]} -gt 0 ]]; then exec "$0" extend; else exec "$0" internal; fi ;;
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*)
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echo "usage: display auto|duplicate|extend|internal|external|list" >&2; exit 2 ;;
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esac
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sleep 0.5
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restore_bg
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reload_bar
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