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#!/usr/bin/env bash
set -euo pipefail
if ! command -v hyprctl >/dev/null 2>&1; then
exit 0
fi
if ! command -v jq >/dev/null 2>&1; then
exit 0
fi
workspace_json="$(hyprctl -j activeworkspace 2>/dev/null || true)"
layout_name="$(jq -r '.tiledLayout // .tiled_layout // empty' <<<"$workspace_json")"
if [[ "$layout_name" != "scrolling" ]]; then
exit 0
fi
window_json="$(hyprctl -j activewindow 2>/dev/null || true)"
column_width="$(jq -r '.layout.column.width // .layout.column // empty' <<<"$window_json")"
window_monitor="$(jq -r '.monitor // empty' <<<"$window_json")"
window_width="$(jq -r '.size[0] // empty' <<<"$window_json")"
if [[ -n "$column_width" && "$column_width" != "null" ]]; then
if ! awk -v v="$column_width" 'BEGIN { exit !(v > 0 && v <= 1.0) }'; then
column_width=""
fi
fi
if [[ -z "$column_width" || "$column_width" == "null" ]]; then
monitors_json="$(hyprctl -j monitors 2>/dev/null || true)"
monitor_width="$(jq -r --arg id "$window_monitor" '.[] | select((.id | tostring) == $id) | .width' <<<"$monitors_json" 2>/dev/null | head -n1)"
if [[ -n "$window_width" && -n "$monitor_width" && "$window_width" != "null" && "$monitor_width" != "null" ]]; then
column_width="$(awk -v w="$window_width" -v mw="$monitor_width" 'BEGIN { if (w > 0 && mw > 0) printf "%.6f", (w / mw); }')"
fi
fi
if [[ -z "$column_width" || "$column_width" == "null" ]]; then
exit 0
fi
presets=(0.25 0.33 0.5 0.66 0.75 1.0)
closest_idx=0
best_diff=""
for idx in "${!presets[@]}"; do
preset="${presets[$idx]}"
diff="$(awk -v a="$preset" -v b="$column_width" 'BEGIN { d = a - b; if (d < 0) d = -d; printf "%.12f", d }')"
if [[ -z "$best_diff" ]] || awk -v d="$diff" -v b="$best_diff" 'BEGIN { exit !(d < b) }'; then
best_diff="$diff"
closest_idx="$idx"
fi
done
next_idx=$(( (closest_idx + 1) % ${#presets[@]} ))
hyprctl dispatch layoutmsg "colresize ${presets[$next_idx]}" >/dev/null 2>&1 || true
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