Kiosk PyQt6 WebEngine : alternative navigateur, process unique, auto-reload

scripts/install-kiosk-qt.sh

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+#!/bin/bash
+# Installe PyQt6 WebEngine et configure le service kiosk Qt
+set -e
+
+echo "=== Installation PyQt6 WebEngine ==="
+pip3 install PyQt6 PyQt6-WebEngine --break-system-packages
+
+echo "=== Creation service systemd ==="
+cat > /etc/systemd/system/photobooth-kiosk-qt.service << EOF
+[Unit]
+Description=Photobooth Kiosk Qt
+After=graphical-session.target photobooth.service
+Wants=photobooth.service
+
+[Service]
+Type=simple
+User=$(logname)
+Environment=DISPLAY=:0
+Environment=XAUTHORITY=/home/$(logname)/.Xauthority
+ExecStart=/usr/bin/python3 /home/$(logname)/photobooth/scripts/kiosk-qt.py
+Restart=always
+RestartSec=3
+
+[Install]
+WantedBy=graphical-session.target
+EOF
+
+systemctl daemon-reload
+systemctl enable photobooth-kiosk-qt
+
+echo "=== Pour basculer sur le kiosk Qt ==="
+echo "  sudo systemctl stop photobooth-kiosk"
+echo "  sudo systemctl disable photobooth-kiosk"
+echo "  sudo systemctl start photobooth-kiosk-qt"

scripts/kiosk-qt.py

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+#!/usr/bin/env python3
+"""
+Kiosk PyQt6 WebEngine pour photobooth.
+Alternative au browser : process unique, pas de "already running", restart propre.
+Usage : python3 scripts/kiosk-qt.py
+"""
+
+import sys
+import time
+import subprocess
+from PyQt6.QtCore import Qt, QUrl, QTimer
+from PyQt6.QtWidgets import QApplication
+from PyQt6.QtWebEngineWidgets import QWebEngineView
+from PyQt6.QtWebEngineCore import QWebEngineSettings
+
+
+BACKEND_URL = "http://localhost:8080"
+RETRY_INTERVAL_MS = 3000
+
+
+def wait_backend(url: str, timeout: int = 30) -> bool:
+    """Attend que le backend soit dispo avant d'afficher."""
+    import urllib.request
+    for _ in range(timeout):
+        try:
+            urllib.request.urlopen(url, timeout=1)
+            return True
+        except Exception:
+            time.sleep(1)
+    return False
+
+
+class KioskWindow(QWebEngineView):
+    def __init__(self):
+        super().__init__()
+
+        # Plein ecran sans decoration
+        self.setWindowFlags(Qt.WindowType.FramelessWindowHint)
+        self.showFullScreen()
+
+        # Parametres WebEngine
+        settings = self.settings()
+        settings.setAttribute(QWebEngineSettings.WebAttribute.JavascriptEnabled, True)
+        settings.setAttribute(QWebEngineSettings.WebAttribute.LocalStorageEnabled, True)
+        settings.setAttribute(QWebEngineSettings.WebAttribute.TouchIconsEnabled, True)
+        settings.setAttribute(QWebEngineSettings.WebAttribute.ScrollAnimatorEnabled, True)
+
+        # Cacher le curseur
+        self.setCursor(Qt.CursorShape.BlankCursor)
+
+        self.setUrl(QUrl(BACKEND_URL))
+
+        # Watchdog : recharge si la page ne repond plus (WebSocket coupe)
+        self._watchdog = QTimer(self)
+        self._watchdog.setInterval(10000)
+        self._watchdog.timeout.connect(self._check_backend)
+        self._watchdog.start()
+
+    def _check_backend(self):
+        import urllib.request
+        try:
+            urllib.request.urlopen(BACKEND_URL, timeout=2)
+        except Exception:
+            self.reload()
+
+    def keyPressEvent(self, event):
+        # F5 = reload, F11 = fullscreen toggle, Echap ignoré
+        if event.key() == Qt.Key.Key_F5:
+            self.reload()
+        elif event.key() == Qt.Key.Key_F11:
+            if self.isFullScreen():
+                self.showNormal()
+            else:
+                self.showFullScreen()
+
+
+def main():
+    app = QApplication(sys.argv)
+    app.setApplicationName("Photobooth Kiosk")
+
+    # Attendre que le backend soit pret
+    if not wait_backend(BACKEND_URL):
+        print("Backend non disponible apres 30s", file=sys.stderr)
+        sys.exit(1)
+
+    window = KioskWindow()
+    sys.exit(app.exec())
+
+
+if __name__ == "__main__":
+    main()