Add DearPyGUI observer/server UI and demo launcher

startdemo.py

@@ -0,0 +1,138 @@
+import os
+import signal
+import subprocess
+import sys
+import time
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parent
+VIDEO = "testhd2_edit.mp4"
+
+CHILDREN: list[subprocess.Popen] = []
+STOPPING = False
+
+
+def kill_tree(pid: int) -> None:
+    try:
+        subprocess.run(
+            ["taskkill", "/PID", str(pid), "/T", "/F"],
+            stdout=subprocess.DEVNULL,
+            stderr=subprocess.DEVNULL,
+            check=False,
+        )
+    except Exception:
+        pass
+
+
+def pids_listening_on_port(port: int) -> list[int]:
+    try:
+        result = subprocess.run(
+            ["netstat", "-ano", "-p", "tcp"],
+            capture_output=True,
+            text=True,
+            encoding="utf-8",
+            errors="replace",
+            check=False,
+        )
+    except Exception:
+        return []
+    pids: set[int] = set()
+    suffix = f":{port}"
+    for raw_line in result.stdout.splitlines():
+        line = raw_line.strip()
+        if not line:
+            continue
+        parts = line.split()
+        if len(parts) < 5:
+            continue
+        proto, local_addr, _, state, pid_text = parts[:5]
+        if proto.upper() != "TCP":
+            continue
+        if state.upper() != "LISTENING":
+            continue
+        if not local_addr.endswith(suffix):
+            continue
+        try:
+            pids.add(int(pid_text))
+        except ValueError:
+            continue
+    return sorted(pids)
+
+
+def preflight_cleanup() -> None:
+    stale_pids = pids_listening_on_port(8088)
+    for pid in stale_pids:
+        print(f"Pulizia preventiva: termino processo in ascolto su 8088 (PID {pid})", flush=True)
+        kill_tree(pid)
+    if stale_pids:
+        time.sleep(0.4)
+
+
+def stop_all() -> None:
+    global STOPPING
+    if STOPPING:
+        return
+    STOPPING = True
+    print("\nArresto finestre demo...", flush=True)
+    for proc in CHILDREN:
+        if proc.poll() is None:
+            kill_tree(proc.pid)
+
+
+def on_signal(signum, frame) -> None:
+    stop_all()
+    raise KeyboardInterrupt
+
+
+def start_window(title: str, launcher_bat: str) -> subprocess.Popen:
+    startupinfo = subprocess.STARTUPINFO()
+    startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
+    startupinfo.wShowWindow = 6  # SW_MINIMIZE
+    return subprocess.Popen(
+        ["cmd.exe", "/k", launcher_bat],
+        cwd=str(ROOT),
+        creationflags=subprocess.CREATE_NEW_CONSOLE,
+        startupinfo=startupinfo,
+    )
+
+
+def main() -> int:
+    signal.signal(signal.SIGINT, on_signal)
+    if hasattr(signal, "SIGTERM"):
+        signal.signal(signal.SIGTERM, on_signal)
+
+    preflight_cleanup()
+
+    try:
+        print("Avvio WMS server...", flush=True)
+        CHILDREN.append(start_window("FlyWMS - WMS Server", "run_wms_server.bat"))
+        time.sleep(0.25)
+
+        print("Avvio observer...", flush=True)
+        CHILDREN.append(start_window("FlyWMS - Observer", "run_observer.bat"))
+        time.sleep(0.25)
+
+        print("Avvio navigator...", flush=True)
+        CHILDREN.append(start_window("FlyWMS - Navigator", "run_navigator.bat"))
+
+        print("\nDemo avviata.", flush=True)
+        for proc in CHILDREN:
+            print(f"- PID {proc.pid}", flush=True)
+        print("\nPremi Ctrl+C in questa finestra per chiudere tutto.\n", flush=True)
+
+        while True:
+            alive = [proc for proc in CHILDREN if proc.poll() is None]
+            if not alive:
+                print("Tutte le finestre demo sono terminate.", flush=True)
+                return 0
+            time.sleep(1.0)
+    except KeyboardInterrupt:
+        print("Interruzione rilevata.", flush=True)
+        return 130
+    finally:
+        stop_all()
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())