ente/lib/ui/lock_screen.dart

import 'package:flutter/material.dart';
import 'package:logging/logging.dart';
import 'package:photos/ente_theme_data.dart';
import 'package:photos/ui/app_lock.dart';
import 'package:photos/ui/common/gradientButton.dart';
import 'package:photos/utils/auth_util.dart';

class LockScreen extends StatefulWidget {
  LockScreen({Key key}) : super(key: key);

  @override
  _LockScreenState createState() => _LockScreenState();
}

class _LockScreenState extends State<LockScreen> {
  final _logger = Logger("LockScreen");

  @override
  void initState() {
    _showLockScreen();
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Column(
            crossAxisAlignment: CrossAxisAlignment.center,
            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
            children: [
              Stack(
                alignment: Alignment.center,
                children: [
                  Image.asset(MediaQuery.of(context).platformBrightness ==
                          Brightness.light
                      ? 'assets/loading_photos_light.png'
                      : 'assets/loading_photos_dark.png'),
                  SizedBox(
                    width: 172,
                    child: GradientButton(
                      child: Text(
                        'Unlock',
                        style: gradientButtonTextTheme(),
                      ),
                      linearGradientColors: const [
                        Color(0xFF2CD267),
                        Color(0xFF1DB954),
                      ],
                      onTap: () async {
                        _showLockScreen();
                      },
                    ),
                  ),
                ],
              ),
            ]),
      ),
    );
  }

  Future<void> _showLockScreen() async {
    _logger.info("Showing lockscreen");
    try {
      final result = await requestAuthentication(
          "Please authenticate to view your memories");
      if (result) {
        AppLock.of(context).didUnlock();
      }
    } catch (e, s) {
      _logger.severe(e, s);
    }
  }
}