quicklook-launch

#!/usr/bin/env bash
set -euo pipefail

BIN="$HOME/.local/bin/quicklook-linux"
FILE="${1:-}"

[[ -x "$BIN" ]] || exit 20
[[ -n "$FILE" ]] || exit 21
[[ -e "$FILE" ]] || exit 22

# R8.2: recalcular las reglas de posición EN CADA APERTURA.
# Así una actualización de Plasma, un cambio de panel/escalado/resolución o
# un cambio de pantalla principal no deja coordenadas KWin antiguas.
refresh_kwin_position() {
    command -v kwriteconfig6 >/dev/null 2>&1 || return 0
    command -v kreadconfig6 >/dev/null 2>&1 || return 0

    local geo gx gy gw gh can_w can_h aud_w aud_h can_x can_y aud_x aud_y
    geo="$($BIN --print-available-geometry 2>/dev/null || true)"
    read -r gx gy gw gh <<< "$geo"

    [[ "$gx" =~ ^-?[0-9]+$ ]] || return 0
    [[ "$gy" =~ ^-?[0-9]+$ ]] || return 0
    [[ "$gw" =~ ^[0-9]+$ ]] || return 0
    [[ "$gh" =~ ^[0-9]+$ ]] || return 0

    can_w=820; can_h=540; aud_w=760; aud_h=430
    (( can_w > gw - 80 )) && can_w=$((gw - 80))
    (( can_h > gh - 100 )) && can_h=$((gh - 100))
    (( aud_w > gw - 80 )) && aud_w=$((gw - 80))
    (( aud_h > gh - 100 )) && aud_h=$((gh - 100))

    can_x=$((gx + (gw - can_w) / 2))
    can_y=$((gy + (gh - can_h) / 2))
    aud_x=$((gx + (gw - aud_w) / 2))
    aud_y=$can_y

    kwriteconfig6 --file kwinrulesrc --group QuickLookLinuxInitialPlacement --key position "$can_x,$can_y"
    kwriteconfig6 --file kwinrulesrc --group QuickLookLinuxInitialPlacement --key positionrule 3
    kwriteconfig6 --file kwinrulesrc --group QuickLookLinuxAudioInitialPlacement --key position "$aud_x,$aud_y"
    kwriteconfig6 --file kwinrulesrc --group QuickLookLinuxAudioInitialPlacement --key positionrule 3

    command -v qdbus6 >/dev/null 2>&1 && qdbus6 org.kde.KWin /KWin reconfigure >/dev/null 2>&1 || true
}

refresh_kwin_position

# Keep a single QuickLook process. Repeated Space presses or a stalled converter
# must never pile up detached preview processes behind Dolphin.
if pgrep -x quicklook-linux >/dev/null 2>&1; then
    pkill -TERM -x quicklook-linux 2>/dev/null || true
    for _ in {1..8}; do
        pgrep -x quicklook-linux >/dev/null 2>&1 || break
        sleep 0.05
    done
    pgrep -x quicklook-linux >/dev/null 2>&1 && pkill -KILL -x quicklook-linux 2>/dev/null || true
fi

# QuickLook must never block Dolphin or plasmashell.
setsid -f "$BIN" "$FILE" </dev/null >/dev/null 2>&1
exit 0