Ely Office: six offline-first desktop apps in Rust and GPUI

ElyDoc, ElyTable, ElyShow (LibreOfficeKit), ElyPDF (MuPDF), ElyTree (Git),
ElyMark (Milkdown and CodeMirror in CEF). ElyMail and ElyAgent follow.

tests/scripts/shot.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+# Usage: shot.sh [--id] <pid> [out.png]; macOS only.
+set -euo pipefail
+
+[ "$(uname)" = Darwin ] || { echo "shot: needs macOS" >&2; exit 2; }
+id_only=
+if [ "${1:-}" = --id ]; then
+  id_only=1
+  shift
+fi
+pid=${1:?pid}
+
+id=$(osascript -l JavaScript - "$pid" <<'JS'
+ObjC.import('CoreGraphics');
+function run(argv) {
+  const pid = parseInt(argv[0]);
+  const all = ObjC.deepUnwrap(ObjC.castRefToObject($.CGWindowListCopyWindowInfo($.kCGWindowListOptionOnScreenOnly, 0)));
+  const mine = all.filter(w => w.kCGWindowOwnerPID === pid && w.kCGWindowLayer === 0);
+  return mine.length ? String(mine[0].kCGWindowNumber) : '';
+}
+JS
+)
+[ -n "$id" ] || { echo "shot: process $pid has no on-screen window" >&2; exit 1; }
+if [ -n "$id_only" ]; then
+  echo "$id"
+  exit 0
+fi
+out=${2:?out.png}
+screencapture -x -o -l"$id" "$out"
+[ -s "$out" ] || { echo "shot: screencapture wrote nothing for window $id" >&2; exit 1; }