1473 lines
42 KiB
Dart
1473 lines
42 KiB
Dart
import 'dart:async';
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import 'dart:convert';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:permission_handler/permission_handler.dart';
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import 'package:url_launcher/url_launcher.dart';
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import 'package:webview_flutter/webview_flutter.dart';
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import 'package:webview_flutter_android/webview_flutter_android.dart';
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import 'config/app_config.dart';
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const _shellBackground = Color(0xFFF6FAFF);
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const _shellAccent = Color(0xFF168CFF);
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const _shellAccentDeep = Color(0xFF0066D9);
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const _shellInk = Color(0xFF17233D);
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const _shellSubText = Color(0xFF7C8AA3);
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const _shellBrandingChannel =
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MethodChannel('io.openim.flutter.im_webview_app/shell_branding');
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const _androidFilePickerChannel =
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MethodChannel('io.openim.flutter.openim/file_picker');
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const _keyboardAnimationDuration = Duration(milliseconds: 250);
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Future<void> main() async {
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WidgetsFlutterBinding.ensureInitialized();
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SystemChrome.setSystemUIOverlayStyle(
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const SystemUiOverlayStyle(
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statusBarColor: Colors.white,
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statusBarIconBrightness: Brightness.dark,
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systemNavigationBarColor: _shellBackground,
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systemNavigationBarIconBrightness: Brightness.dark,
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),
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);
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runApp(const ImWebViewApp());
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}
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class ShellBranding {
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const ShellBranding({
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required this.appName,
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required this.appLogo,
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});
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static const fallback = ShellBranding(
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appName: AppConfig.appName,
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appLogo: AppConfig.appLogo,
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);
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final String appName;
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final String appLogo;
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static Future<ShellBranding> load() async {
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try {
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final data = await _shellBrandingChannel
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.invokeMapMethod<String, String>('getShellBranding');
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final appName = _trim(data?['appName']);
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final appLogo = _trim(data?['appLogo']);
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return ShellBranding(
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appName: appName.isNotEmpty ? appName : fallback.appName,
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appLogo: appLogo.isNotEmpty ? appLogo : fallback.appLogo,
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);
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} catch (_) {
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return fallback;
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}
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}
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static String _trim(String? value) => value?.trim() ?? '';
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}
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class ImWebViewApp extends StatelessWidget {
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const ImWebViewApp({
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super.key,
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this.shellBranding = ShellBranding.fallback,
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});
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final ShellBranding shellBranding;
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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title: shellBranding.appName,
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debugShowCheckedModeBanner: false,
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theme: ThemeData(
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colorScheme: ColorScheme.fromSeed(seedColor: const Color(0xFF1F6FEB)),
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scaffoldBackgroundColor: Colors.white,
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useMaterial3: true,
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),
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home: H5ShellPage(initialShellBranding: shellBranding),
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);
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}
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}
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class H5ShellPage extends StatefulWidget {
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const H5ShellPage({super.key, required this.initialShellBranding});
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final ShellBranding initialShellBranding;
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@override
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State<H5ShellPage> createState() => _H5ShellPageState();
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}
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class _H5ShellPageState extends State<H5ShellPage> {
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late final List<H5Line> _h5Lines;
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late final List<_H5LineWebViewSlot> _lineSlots;
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bool _shellBrandingLoaded = false;
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int _currentLineIndex = 0;
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double _lastKeyboardInset = 0;
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bool _lastKeyboardVisible = false;
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int _keyboardSyncToken = 0;
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late ShellBranding _shellBranding;
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H5Line get _currentLine => _h5Lines[_currentLineIndex];
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_H5LineWebViewSlot get _currentSlot => _lineSlots[_currentLineIndex];
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@override
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void initState() {
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super.initState();
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_h5Lines = AppConfig.h5Lines;
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_shellBranding = widget.initialShellBranding;
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_lineSlots = [
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for (var index = 0; index < _h5Lines.length; index += 1)
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_H5LineWebViewSlot(
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line: _h5Lines[index],
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controller: _buildController(index),
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),
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];
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unawaited(_ensureLineLoaded(_currentLineIndex));
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}
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WebViewController _buildController(int lineIndex) {
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final controller = WebViewController(
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onPermissionRequest: (request) {
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unawaited(_handleWebViewPermissionRequest(request));
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},
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)
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..setJavaScriptMode(JavaScriptMode.unrestricted)
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..addJavaScriptChannel(
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'OpenIMShell',
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onMessageReceived: (message) => _handleShellMessage(lineIndex, message),
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)
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..addJavaScriptChannel(
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'OpenIMFlutterShell',
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onMessageReceived: (message) =>
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_handleFlutterShellMessage(lineIndex, message),
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)
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..setBackgroundColor(Colors.white)
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..setNavigationDelegate(
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NavigationDelegate(
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onProgress: (progress) {
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final slot = _lineSlots[lineIndex];
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final nextProgress = progress.clamp(0, 100).toInt();
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if (slot.progress == nextProgress) {
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return;
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}
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slot.progress = nextProgress;
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if (mounted &&
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lineIndex == _currentLineIndex &&
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slot.isAwaitingFirstScreen) {
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setState(() {});
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}
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},
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onPageStarted: (url) {
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final slot = _lineSlots[lineIndex];
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final shouldShowCover = !slot.hasPresentedFirstScreen;
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slot.shellCoverFallbackTimer?.cancel();
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slot.setCurrentUrl(url);
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slot.loadError = null;
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slot.progress = 0;
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slot.showShellCover = shouldShowCover;
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if (mounted && lineIndex == _currentLineIndex) {
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setState(() {});
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}
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},
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onPageFinished: (_) {
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unawaited(_handlePageFinished(lineIndex));
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},
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onUrlChange: (change) {
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_updateSlotUrl(lineIndex, change.url);
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},
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onWebResourceError: (error) {
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if (error.isForMainFrame ?? true) {
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final slot = _lineSlots[lineIndex];
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slot.shellCoverFallbackTimer?.cancel();
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slot.loadError = error.description;
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slot.showShellCover = false;
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if (mounted && lineIndex == _currentLineIndex) {
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setState(() {});
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}
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}
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},
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onNavigationRequest: _handleNavigationRequest,
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),
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);
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_configurePlatformController(controller);
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return controller;
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}
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void _configurePlatformController(WebViewController controller) {
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final platformController = controller.platform;
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if (platformController is AndroidWebViewController) {
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unawaited(
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platformController.setOnShowFileSelector(_handleAndroidFileSelection),
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);
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unawaited(platformController.setMediaPlaybackRequiresUserGesture(false));
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}
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}
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Future<List<String>> _handleAndroidFileSelection(
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FileSelectorParams params,
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) async {
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if (params.mode == FileSelectorMode.save) {
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return <String>[];
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}
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try {
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final result = await _androidFilePickerChannel.invokeListMethod<String>(
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'pickFiles',
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{
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'acceptTypes': params.acceptTypes,
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'allowMultiple': params.mode == FileSelectorMode.openMultiple,
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'capture': params.isCaptureEnabled,
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},
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);
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return result ?? <String>[];
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} catch (_) {
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return <String>[];
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}
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}
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@override
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void dispose() {
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for (final slot in _lineSlots) {
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slot.dispose();
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}
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super.dispose();
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}
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Future<void> _runJavaScriptSafely(int lineIndex, String source) async {
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try {
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await _lineSlots[lineIndex].controller.runJavaScript(source);
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} catch (_) {
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// WebView can reject JavaScript while a page is still navigating.
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}
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}
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Future<void> _handlePageFinished(int lineIndex) async {
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await _loadShellBrandingIfNeeded();
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await _syncShellBranding(lineIndex);
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await _installRouteObserver(lineIndex);
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await _syncKeyboardState(lineIndex);
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final slot = _lineSlots[lineIndex];
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slot.progress = 100;
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if (mounted &&
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lineIndex == _currentLineIndex &&
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slot.isAwaitingFirstScreen) {
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setState(() {});
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}
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if (slot.showShellCover) {
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_scheduleShellCoverFallback(lineIndex);
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} else {
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slot.shellCoverFallbackTimer?.cancel();
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}
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}
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void _handleShellMessage(int lineIndex, JavaScriptMessage message) {
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try {
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final decoded = jsonDecode(message.message);
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if (decoded is Map && decoded['type'] == 'first-screen-ready') {
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_hideShellCover(lineIndex);
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} else if (decoded is Map && decoded['type'] == 'route-changed') {
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_updateSlotUrl(lineIndex, decoded['url']?.toString());
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} else if (decoded is Map && decoded['type'] == 'keyboard-bridge-ready') {
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unawaited(_syncKeyboardState(lineIndex));
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}
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} catch (_) {
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if (message.message == 'first-screen-ready') {
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_hideShellCover(lineIndex);
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}
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}
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}
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void _handleFlutterShellMessage(int lineIndex, JavaScriptMessage message) {
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try {
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final decoded = jsonDecode(message.message);
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if (decoded is! Map) {
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return;
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}
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switch (decoded['type']) {
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case 'requestMediaPermissions':
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final requestId = decoded['requestId']?.toString();
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if (requestId == null || requestId.isEmpty) {
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return;
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}
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unawaited(
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_handleShellMediaPermissionRequest(
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lineIndex: lineIndex,
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requestId: requestId,
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audio: decoded['audio'] == true,
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video: decoded['video'] == true,
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),
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);
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case 'openAppSettings':
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unawaited(openAppSettings());
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case 'keyboard-bridge-ready':
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unawaited(_syncKeyboardState(lineIndex));
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}
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} catch (_) {
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// Ignore malformed shell messages from web content.
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}
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}
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void _scheduleShellCoverFallback(int lineIndex) {
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final slot = _lineSlots[lineIndex];
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if (!slot.showShellCover) {
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return;
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}
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slot.shellCoverFallbackTimer?.cancel();
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slot.shellCoverFallbackTimer = Timer(
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const Duration(milliseconds: 1800),
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() => _hideShellCover(lineIndex),
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);
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}
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void _hideShellCover(int lineIndex) {
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final slot = _lineSlots[lineIndex];
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slot.shellCoverFallbackTimer?.cancel();
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if (slot.hasPresentedFirstScreen && !slot.showShellCover) {
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return;
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}
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slot.hasPresentedFirstScreen = true;
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slot.progress = 100;
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slot.showShellCover = false;
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if (!mounted || lineIndex != _currentLineIndex) {
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return;
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}
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setState(() {});
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}
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Future<void> _loadShellBrandingIfNeeded() async {
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if (_shellBrandingLoaded) {
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return;
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}
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final shellBranding = await ShellBranding.load();
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_shellBrandingLoaded = true;
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if (!mounted) {
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_shellBranding = shellBranding;
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return;
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}
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setState(() {
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_shellBranding = shellBranding;
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});
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}
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Future<void> _syncShellBranding(int lineIndex) {
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final payload = jsonEncode({
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'name': _shellBranding.appName,
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'logo': _shellBranding.appLogo,
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});
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final script = '''
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(() => {
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try {
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const brand = $payload;
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window.sessionStorage.setItem('OPENIM_FLUTTER_SHELL_BRAND', JSON.stringify(brand));
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window.dispatchEvent(new CustomEvent('openim-shell-branding-updated', { detail: brand }));
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} catch (_) {}
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})();
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''';
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return _runJavaScriptSafely(lineIndex, script);
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}
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void _scheduleKeyboardStateSync(double bottomInset) {
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final nextInset = bottomInset < 1 ? 0.0 : bottomInset;
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final nextVisible = nextInset > 0;
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if ((nextInset - _lastKeyboardInset).abs() < 1 &&
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nextVisible == _lastKeyboardVisible) {
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return;
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}
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_lastKeyboardInset = nextInset;
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_lastKeyboardVisible = nextVisible;
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final token = ++_keyboardSyncToken;
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WidgetsBinding.instance.addPostFrameCallback((_) {
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if (!mounted || token != _keyboardSyncToken) {
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return;
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}
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unawaited(_syncKeyboardState(_currentLineIndex));
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});
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}
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Future<void> _syncKeyboardState(int lineIndex) {
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if (lineIndex < 0 || lineIndex >= _lineSlots.length) {
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return Future<void>.value();
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}
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final payload = jsonEncode({
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'height': _lastKeyboardInset.round(),
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'visible': _lastKeyboardVisible,
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'duration': _keyboardAnimationDuration.inMilliseconds,
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});
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final script = '''
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(() => {
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try {
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const keyboard = $payload;
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if (typeof window.__OPENIM_KEYBOARD_UPDATE__ === 'function') {
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window.__OPENIM_KEYBOARD_UPDATE__(keyboard);
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return;
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}
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if (typeof window.openIMKeyboardUpdate === 'function') {
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window.openIMKeyboardUpdate(keyboard);
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}
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} catch (_) {}
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})();
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''';
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return _runJavaScriptSafely(lineIndex, script);
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}
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Future<void> _installRouteObserver(int lineIndex) {
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const script = '''
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(() => {
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try {
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const notify = () => {
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try {
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window.OpenIMShell.postMessage(JSON.stringify({
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type: 'route-changed',
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url: window.location.href
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}));
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} catch (_) {}
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};
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if (window.__OPENIM_FLUTTER_ROUTE_OBSERVER__) {
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window.__OPENIM_FLUTTER_ROUTE_OBSERVER__.notify();
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return;
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}
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const originalPushState = window.history.pushState;
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const originalReplaceState = window.history.replaceState;
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window.history.pushState = function() {
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const result = originalPushState.apply(this, arguments);
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notify();
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return result;
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};
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window.history.replaceState = function() {
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const result = originalReplaceState.apply(this, arguments);
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notify();
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return result;
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};
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window.addEventListener('popstate', notify);
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window.__OPENIM_FLUTTER_ROUTE_OBSERVER__ = { notify };
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notify();
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} catch (_) {}
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})();
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''';
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return _runJavaScriptSafely(lineIndex, script);
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}
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Future<void> _handleShellMediaPermissionRequest({
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required int lineIndex,
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required String requestId,
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required bool audio,
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required bool video,
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}) async {
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final result = await _requestNativeMediaPermissions(
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audio: audio,
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video: video,
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);
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final payload = jsonEncode({
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'requestId': requestId,
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'granted': result.granted,
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'permanentlyDenied': result.permanentlyDenied,
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'restricted': result.restricted,
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});
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final script = '''
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(() => {
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try {
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window.dispatchEvent(new CustomEvent('openim-shell-media-permission-result', { detail: $payload }));
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} catch (_) {}
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})();
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''';
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await _runJavaScriptSafely(lineIndex, script);
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}
|
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|
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Future<void> _handleWebViewPermissionRequest(
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WebViewPermissionRequest request,
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) async {
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final requestsOnlySupportedMediaTypes = request.types.every(
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(type) =>
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type == WebViewPermissionResourceType.camera ||
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type == WebViewPermissionResourceType.microphone,
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);
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if (!requestsOnlySupportedMediaTypes) {
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await request.deny();
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return;
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}
|
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|
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final result = await _requestNativeMediaPermissions(
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audio: request.types.contains(WebViewPermissionResourceType.microphone),
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video: request.types.contains(WebViewPermissionResourceType.camera),
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);
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if (result.granted) {
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await request.grant();
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} else {
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await request.deny();
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}
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}
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Future<_NativeMediaPermissionResult> _requestNativeMediaPermissions({
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required bool audio,
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required bool video,
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}) async {
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final permissions = <Permission>[
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if (audio) Permission.microphone,
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if (video) Permission.camera,
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];
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if (permissions.isEmpty) {
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return const _NativeMediaPermissionResult(granted: true);
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}
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var granted = true;
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var permanentlyDenied = false;
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var restricted = false;
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|
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for (final permission in permissions) {
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final status = await permission.request();
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granted = granted && status.isGranted;
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permanentlyDenied = permanentlyDenied || status.isPermanentlyDenied;
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restricted = restricted || status.isRestricted;
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}
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return _NativeMediaPermissionResult(
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granted: granted,
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permanentlyDenied: permanentlyDenied,
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restricted: restricted,
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);
|
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}
|
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|
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void _updateSlotUrl(int lineIndex, String? url) {
|
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if (url == null || lineIndex < 0 || lineIndex >= _lineSlots.length) {
|
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return;
|
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}
|
|
|
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final slot = _lineSlots[lineIndex];
|
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final changed = slot.setCurrentUrl(url);
|
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if (changed && mounted && lineIndex == _currentLineIndex) {
|
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setState(() {});
|
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}
|
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}
|
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|
|
Future<void> _ensureLineLoaded(int lineIndex) async {
|
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final slot = _lineSlots[lineIndex];
|
|
if (slot.hasLoadedInitialRequest) {
|
|
return;
|
|
}
|
|
|
|
slot.hasLoadedInitialRequest = true;
|
|
final shouldShowCover = !slot.hasPresentedFirstScreen;
|
|
if (mounted) {
|
|
slot.shellCoverFallbackTimer?.cancel();
|
|
setState(() {
|
|
slot.setCurrentUrl(slot.line.url);
|
|
slot.loadError = null;
|
|
slot.progress = 0;
|
|
slot.showShellCover = shouldShowCover;
|
|
});
|
|
}
|
|
|
|
await slot.controller.loadRequest(Uri.parse(slot.line.url));
|
|
}
|
|
|
|
Future<void> _reloadCurrentLine() async {
|
|
final slot = _currentSlot;
|
|
final shouldShowCover = !slot.hasPresentedFirstScreen;
|
|
slot.shellCoverFallbackTimer?.cancel();
|
|
if (mounted) {
|
|
setState(() {
|
|
slot.loadError = null;
|
|
slot.progress = 0;
|
|
slot.showShellCover = shouldShowCover;
|
|
});
|
|
}
|
|
|
|
if (slot.hasLoadedInitialRequest) {
|
|
await slot.controller.reload();
|
|
} else {
|
|
await _ensureLineLoaded(_currentLineIndex);
|
|
}
|
|
}
|
|
|
|
Future<void> _loadLine(int index) async {
|
|
final safeIndex = index < 0 || index >= _h5Lines.length ? 0 : index;
|
|
if (mounted) {
|
|
setState(() {
|
|
_currentLineIndex = safeIndex;
|
|
});
|
|
}
|
|
|
|
await _ensureLineLoaded(safeIndex);
|
|
await _syncKeyboardState(safeIndex);
|
|
}
|
|
|
|
Widget _buildWebViewWidget(int index) {
|
|
PlatformWebViewWidgetCreationParams params =
|
|
PlatformWebViewWidgetCreationParams(
|
|
controller: _lineSlots[index].controller.platform,
|
|
);
|
|
|
|
if (_lineSlots[index].controller.platform is AndroidWebViewController) {
|
|
params = AndroidWebViewWidgetCreationParams
|
|
.fromPlatformWebViewWidgetCreationParams(
|
|
params,
|
|
displayWithHybridComposition: true,
|
|
);
|
|
}
|
|
|
|
return RepaintBoundary(
|
|
child: WebViewWidget.fromPlatformCreationParams(
|
|
key: ValueKey<int>(index),
|
|
params: params,
|
|
),
|
|
);
|
|
}
|
|
|
|
void _showLineSwitcher() {
|
|
showModalBottomSheet<void>(
|
|
context: context,
|
|
useSafeArea: true,
|
|
showDragHandle: true,
|
|
backgroundColor: Colors.white,
|
|
shape: const RoundedRectangleBorder(
|
|
borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
|
|
),
|
|
builder: (sheetContext) {
|
|
return _LineSwitcherSheet(
|
|
lines: _h5Lines,
|
|
currentIndex: _currentLineIndex,
|
|
onSelect: (index) {
|
|
Navigator.of(sheetContext).pop();
|
|
if (index != _currentLineIndex) {
|
|
unawaited(_loadLine(index));
|
|
}
|
|
},
|
|
);
|
|
},
|
|
);
|
|
}
|
|
|
|
Future<NavigationDecision> _handleNavigationRequest(
|
|
NavigationRequest request,
|
|
) async {
|
|
final uri = Uri.tryParse(request.url);
|
|
if (uri == null) {
|
|
return NavigationDecision.prevent;
|
|
}
|
|
|
|
const webSchemes = {'http', 'https', 'about', 'data'};
|
|
if (webSchemes.contains(uri.scheme)) {
|
|
return NavigationDecision.navigate;
|
|
}
|
|
|
|
try {
|
|
await launchUrl(uri, mode: LaunchMode.externalApplication);
|
|
} catch (_) {
|
|
// Ignore unsupported custom schemes so the WebView does not navigate to
|
|
// an error page.
|
|
}
|
|
return NavigationDecision.prevent;
|
|
}
|
|
|
|
Future<void> _handleBackNavigation() async {
|
|
final controller = _currentSlot.controller;
|
|
if (await controller.canGoBack()) {
|
|
await controller.goBack();
|
|
} else {
|
|
await SystemNavigator.pop();
|
|
}
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
final currentSlot = _currentSlot;
|
|
final topInset = MediaQuery.paddingOf(context).top;
|
|
final bottomInset = MediaQuery.viewInsetsOf(context).bottom;
|
|
_scheduleKeyboardStateSync(bottomInset);
|
|
final showLineSwitch = !currentSlot.showShellCover &&
|
|
currentSlot.loadError == null &&
|
|
currentSlot.isLoginPage &&
|
|
bottomInset == 0;
|
|
final shouldPaintShellFallback =
|
|
currentSlot.isAwaitingFirstScreen && currentSlot.loadError == null;
|
|
|
|
return PopScope(
|
|
canPop: false,
|
|
onPopInvokedWithResult: (didPop, _) {
|
|
if (!didPop) {
|
|
unawaited(_handleBackNavigation());
|
|
}
|
|
},
|
|
child: Scaffold(
|
|
backgroundColor: Colors.white,
|
|
body: Stack(
|
|
children: [
|
|
SafeArea(
|
|
bottom: false,
|
|
child: Stack(
|
|
children: [
|
|
if (shouldPaintShellFallback)
|
|
Positioned.fill(
|
|
child: _ShellFallback(progress: currentSlot.progress),
|
|
),
|
|
Positioned.fill(
|
|
child: IndexedStack(
|
|
index: _currentLineIndex,
|
|
children: [
|
|
for (var index = 0;
|
|
index < _lineSlots.length;
|
|
index += 1)
|
|
_buildWebViewWidget(index),
|
|
],
|
|
),
|
|
),
|
|
if (currentSlot.showShellCover &&
|
|
!currentSlot.hasPresentedFirstScreen)
|
|
Positioned.fill(
|
|
child: IgnorePointer(
|
|
child: _ShellFallback(progress: currentSlot.progress),
|
|
),
|
|
),
|
|
if (!currentSlot.hasPresentedFirstScreen &&
|
|
!currentSlot.showShellCover &&
|
|
currentSlot.progress < 100)
|
|
LinearProgressIndicator(
|
|
value: currentSlot.progress == 0
|
|
? null
|
|
: currentSlot.progress / 100,
|
|
minHeight: 2,
|
|
),
|
|
if (currentSlot.loadError != null)
|
|
_ErrorPanel(
|
|
message: currentSlot.loadError!,
|
|
onRetry: () => unawaited(_reloadCurrentLine()),
|
|
),
|
|
if (showLineSwitch)
|
|
Positioned(
|
|
left: 20,
|
|
right: 20,
|
|
bottom: MediaQuery.paddingOf(context).bottom + 14,
|
|
child: _LineSwitchBar(
|
|
currentLine: _currentLine,
|
|
onSwitch: _showLineSwitcher,
|
|
),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
Positioned(
|
|
top: 0,
|
|
left: 0,
|
|
right: 0,
|
|
height: topInset,
|
|
child: ColoredBox(
|
|
color:
|
|
shouldPaintShellFallback ? _shellBackground : Colors.white,
|
|
),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
class _NativeMediaPermissionResult {
|
|
const _NativeMediaPermissionResult({
|
|
required this.granted,
|
|
this.permanentlyDenied = false,
|
|
this.restricted = false,
|
|
});
|
|
|
|
final bool granted;
|
|
final bool permanentlyDenied;
|
|
final bool restricted;
|
|
}
|
|
|
|
class _H5LineWebViewSlot {
|
|
_H5LineWebViewSlot({
|
|
required this.line,
|
|
required this.controller,
|
|
});
|
|
|
|
final H5Line line;
|
|
final WebViewController controller;
|
|
|
|
int progress = 0;
|
|
String? loadError;
|
|
bool showShellCover = true;
|
|
bool hasPresentedFirstScreen = false;
|
|
bool hasLoadedInitialRequest = false;
|
|
bool isLoginPage = false;
|
|
String? currentUrl;
|
|
Timer? shellCoverFallbackTimer;
|
|
|
|
bool get isAwaitingFirstScreen => !hasPresentedFirstScreen;
|
|
|
|
bool setCurrentUrl(String url) {
|
|
final nextIsLoginPage = AppConfig.isLoginPageUrl(url);
|
|
if (currentUrl == url && isLoginPage == nextIsLoginPage) {
|
|
return false;
|
|
}
|
|
|
|
currentUrl = url;
|
|
isLoginPage = nextIsLoginPage;
|
|
return true;
|
|
}
|
|
|
|
void dispose() {
|
|
shellCoverFallbackTimer?.cancel();
|
|
}
|
|
}
|
|
|
|
class _ErrorPanel extends StatelessWidget {
|
|
const _ErrorPanel({required this.message, required this.onRetry});
|
|
|
|
final String message;
|
|
final VoidCallback onRetry;
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return ColoredBox(
|
|
color: Colors.white,
|
|
child: Center(
|
|
child: Padding(
|
|
padding: const EdgeInsets.all(24),
|
|
child: Column(
|
|
mainAxisSize: MainAxisSize.min,
|
|
children: [
|
|
const Icon(Icons.wifi_off_rounded, size: 44),
|
|
const SizedBox(height: 16),
|
|
const Text(
|
|
'页面加载失败',
|
|
style: TextStyle(fontSize: 18, fontWeight: FontWeight.w600),
|
|
),
|
|
const SizedBox(height: 8),
|
|
Text(
|
|
message,
|
|
textAlign: TextAlign.center,
|
|
style: Theme.of(context).textTheme.bodyMedium,
|
|
),
|
|
const SizedBox(height: 20),
|
|
FilledButton(
|
|
onPressed: onRetry,
|
|
child: const Text('重新加载'),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
class _LineSwitchBar extends StatelessWidget {
|
|
const _LineSwitchBar({
|
|
required this.currentLine,
|
|
required this.onSwitch,
|
|
});
|
|
|
|
final H5Line currentLine;
|
|
final VoidCallback onSwitch;
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return Center(
|
|
child: ConstrainedBox(
|
|
constraints: const BoxConstraints(maxWidth: 560),
|
|
child: SizedBox(
|
|
width: double.infinity,
|
|
child: Material(
|
|
color: Colors.white.withValues(alpha: 0.94),
|
|
elevation: 8,
|
|
shadowColor: const Color(0xFF0F4C81).withValues(alpha: 0.12),
|
|
borderRadius: BorderRadius.circular(32),
|
|
child: InkWell(
|
|
onTap: onSwitch,
|
|
borderRadius: BorderRadius.circular(32),
|
|
child: Container(
|
|
height: 64,
|
|
padding: const EdgeInsets.symmetric(horizontal: 18),
|
|
decoration: BoxDecoration(
|
|
borderRadius: BorderRadius.circular(32),
|
|
border: Border.all(color: const Color(0xFFE1EAF5)),
|
|
),
|
|
child: Row(
|
|
mainAxisAlignment: MainAxisAlignment.center,
|
|
children: [
|
|
const Icon(
|
|
Icons.sync_rounded,
|
|
size: 19,
|
|
color: _shellSubText,
|
|
),
|
|
const SizedBox(width: 8),
|
|
const Text(
|
|
'当前: ',
|
|
style: TextStyle(
|
|
color: _shellSubText,
|
|
fontSize: 15,
|
|
height: 1.2,
|
|
fontWeight: FontWeight.w600,
|
|
letterSpacing: 0,
|
|
),
|
|
),
|
|
Flexible(
|
|
child: Text(
|
|
currentLine.label,
|
|
overflow: TextOverflow.ellipsis,
|
|
style: const TextStyle(
|
|
color: Color(0xFF17233D),
|
|
fontSize: 16,
|
|
height: 1.2,
|
|
fontWeight: FontWeight.w700,
|
|
letterSpacing: 0,
|
|
),
|
|
),
|
|
),
|
|
const SizedBox(width: 12),
|
|
const Text(
|
|
'切换',
|
|
style: TextStyle(
|
|
color: _shellAccent,
|
|
fontSize: 15,
|
|
height: 1.2,
|
|
fontWeight: FontWeight.w700,
|
|
letterSpacing: 0,
|
|
),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
class _LineSwitcherSheet extends StatelessWidget {
|
|
const _LineSwitcherSheet({
|
|
required this.lines,
|
|
required this.currentIndex,
|
|
required this.onSelect,
|
|
});
|
|
|
|
final List<H5Line> lines;
|
|
final int currentIndex;
|
|
final ValueChanged<int> onSelect;
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
final sheetHeight = MediaQuery.sizeOf(context).height * 0.58;
|
|
final maxHeight = sheetHeight > 420 ? 420.0 : sheetHeight;
|
|
|
|
return Padding(
|
|
padding: const EdgeInsets.fromLTRB(20, 0, 20, 16),
|
|
child: Column(
|
|
mainAxisSize: MainAxisSize.min,
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
|
children: [
|
|
const Text(
|
|
'切换线路',
|
|
style: TextStyle(
|
|
color: Color(0xFF17233D),
|
|
fontSize: 18,
|
|
height: 1.2,
|
|
fontWeight: FontWeight.w700,
|
|
letterSpacing: 0,
|
|
),
|
|
),
|
|
const SizedBox(height: 14),
|
|
ConstrainedBox(
|
|
constraints: BoxConstraints(maxHeight: maxHeight),
|
|
child: ListView.separated(
|
|
shrinkWrap: true,
|
|
itemCount: lines.length,
|
|
separatorBuilder: (context, index) => const SizedBox(height: 10),
|
|
itemBuilder: (context, index) {
|
|
final line = lines[index];
|
|
final selected = index == currentIndex;
|
|
|
|
return _LineOptionTile(
|
|
line: line,
|
|
selected: selected,
|
|
onTap: () => onSelect(index),
|
|
);
|
|
},
|
|
),
|
|
),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
class _LineOptionTile extends StatelessWidget {
|
|
const _LineOptionTile({
|
|
required this.line,
|
|
required this.selected,
|
|
required this.onTap,
|
|
});
|
|
|
|
final H5Line line;
|
|
final bool selected;
|
|
final VoidCallback onTap;
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return Material(
|
|
color: selected ? const Color(0xFFEFF7FF) : Colors.white,
|
|
borderRadius: BorderRadius.circular(8),
|
|
child: InkWell(
|
|
onTap: onTap,
|
|
borderRadius: BorderRadius.circular(8),
|
|
child: Container(
|
|
constraints: const BoxConstraints(minHeight: 64),
|
|
padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
|
|
decoration: BoxDecoration(
|
|
borderRadius: BorderRadius.circular(8),
|
|
border: Border.all(
|
|
color: selected ? _shellAccent : const Color(0xFFE1EAF5),
|
|
),
|
|
),
|
|
child: Row(
|
|
children: [
|
|
Icon(
|
|
selected
|
|
? Icons.radio_button_checked_rounded
|
|
: Icons.radio_button_unchecked_rounded,
|
|
color: selected ? _shellAccent : _shellSubText,
|
|
size: 22,
|
|
),
|
|
const SizedBox(width: 12),
|
|
Expanded(
|
|
child: Column(
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
|
mainAxisAlignment: MainAxisAlignment.center,
|
|
children: [
|
|
Text(
|
|
line.label,
|
|
maxLines: 1,
|
|
overflow: TextOverflow.ellipsis,
|
|
style: const TextStyle(
|
|
color: Color(0xFF17233D),
|
|
fontSize: 16,
|
|
height: 1.2,
|
|
fontWeight: FontWeight.w700,
|
|
letterSpacing: 0,
|
|
),
|
|
),
|
|
const SizedBox(height: 4),
|
|
Text(
|
|
line.displayAddress,
|
|
maxLines: 1,
|
|
overflow: TextOverflow.ellipsis,
|
|
style: const TextStyle(
|
|
color: _shellSubText,
|
|
fontSize: 12,
|
|
height: 1.2,
|
|
fontWeight: FontWeight.w500,
|
|
letterSpacing: 0,
|
|
),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
const SizedBox(width: 8),
|
|
const Icon(
|
|
Icons.chevron_right_rounded,
|
|
color: _shellSubText,
|
|
size: 22,
|
|
),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
class _ShellFallback extends StatelessWidget {
|
|
const _ShellFallback({required this.progress});
|
|
|
|
final int progress;
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
final clampedProgress = progress.clamp(0, 100).toDouble();
|
|
final progressValue =
|
|
progress <= 0 ? 0.28 : 0.22 + clampedProgress * 0.0072;
|
|
|
|
return CustomPaint(
|
|
painter: const _H5LoadingBackgroundPainter(),
|
|
child: LayoutBuilder(
|
|
builder: (context, constraints) {
|
|
final markSize = (constraints.maxWidth * 0.34).clamp(116.0, 148.0);
|
|
final contentTop = constraints.maxHeight * 0.28;
|
|
final progressWidth =
|
|
(constraints.maxWidth * 0.32).clamp(116.0, 152.0);
|
|
|
|
return Align(
|
|
alignment: Alignment.topCenter,
|
|
child: Padding(
|
|
padding: EdgeInsets.only(top: contentTop),
|
|
child: Column(
|
|
mainAxisSize: MainAxisSize.min,
|
|
children: [
|
|
_ShellMark(size: markSize),
|
|
SizedBox(height: markSize * 0.16),
|
|
const Text(
|
|
'心有回响',
|
|
style: TextStyle(
|
|
color: _shellInk,
|
|
fontSize: 24,
|
|
height: 1.2,
|
|
fontWeight: FontWeight.w700,
|
|
letterSpacing: 0,
|
|
),
|
|
),
|
|
const SizedBox(height: 8),
|
|
const Text(
|
|
'正在连接会话',
|
|
style: TextStyle(
|
|
color: _shellSubText,
|
|
fontSize: 12,
|
|
height: 1.2,
|
|
letterSpacing: 0,
|
|
),
|
|
),
|
|
const SizedBox(height: 30),
|
|
_H5LoadingProgress(
|
|
width: progressWidth,
|
|
value: progressValue.clamp(0.18, 0.96).toDouble(),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
},
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
class _ShellMark extends StatelessWidget {
|
|
const _ShellMark({required this.size});
|
|
|
|
final double size;
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return CustomPaint(
|
|
size: Size(size, size * 0.92),
|
|
painter: const _BubbleCheckPainter(),
|
|
);
|
|
}
|
|
}
|
|
|
|
class _H5LoadingProgress extends StatelessWidget {
|
|
const _H5LoadingProgress({required this.width, required this.value});
|
|
|
|
final double width;
|
|
final double value;
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return ClipRRect(
|
|
borderRadius: BorderRadius.circular(99),
|
|
child: SizedBox(
|
|
width: width,
|
|
height: 4,
|
|
child: Stack(
|
|
fit: StackFit.expand,
|
|
children: [
|
|
const ColoredBox(color: Color(0xFFD9EAF8)),
|
|
TweenAnimationBuilder<double>(
|
|
tween: Tween<double>(end: value),
|
|
duration: const Duration(milliseconds: 260),
|
|
curve: Curves.easeOutCubic,
|
|
builder: (context, animatedValue, _) {
|
|
return FractionallySizedBox(
|
|
alignment: Alignment.centerLeft,
|
|
widthFactor: animatedValue,
|
|
child: const DecoratedBox(
|
|
decoration: BoxDecoration(
|
|
gradient: LinearGradient(
|
|
colors: [
|
|
Color(0xFF48D4C8),
|
|
_shellAccent,
|
|
_shellAccentDeep,
|
|
],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
},
|
|
),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
class _H5LoadingBackgroundPainter extends CustomPainter {
|
|
const _H5LoadingBackgroundPainter();
|
|
|
|
static const _sourceSize = Size(1080, 2400);
|
|
|
|
@override
|
|
void paint(Canvas canvas, Size size) {
|
|
final scale =
|
|
(size.width / _sourceSize.width) > (size.height / _sourceSize.height)
|
|
? size.width / _sourceSize.width
|
|
: size.height / _sourceSize.height;
|
|
final dx = (size.width - _sourceSize.width * scale) / 2;
|
|
final dy = (size.height - _sourceSize.height * scale) / 2;
|
|
|
|
canvas.save();
|
|
canvas.translate(dx, dy);
|
|
canvas.scale(scale);
|
|
|
|
final pageRect = Offset.zero & _sourceSize;
|
|
final pagePaint = Paint()
|
|
..shader = const LinearGradient(
|
|
begin: Alignment.topCenter,
|
|
end: Alignment.bottomCenter,
|
|
colors: [
|
|
Color(0xFFEAF7FF),
|
|
Color(0xFFF8FCFF),
|
|
Colors.white,
|
|
],
|
|
stops: [0, 0.52, 1],
|
|
).createShader(pageRect);
|
|
canvas.drawRect(pageRect, pagePaint);
|
|
|
|
final topWave = Path()
|
|
..moveTo(0, 0)
|
|
..lineTo(1080, 0)
|
|
..lineTo(1080, 390)
|
|
..cubicTo(906, 332, 756, 330, 630, 386)
|
|
..cubicTo(478, 454, 332, 448, 214, 374)
|
|
..cubicTo(124, 318, 54, 310, 0, 350)
|
|
..close();
|
|
canvas.drawPath(
|
|
topWave,
|
|
Paint()..color = const Color(0xFFDDF2FF).withValues(alpha: 0.72),
|
|
);
|
|
|
|
final bottomWave = Path()
|
|
..moveTo(1080, 1510)
|
|
..lineTo(1080, 2400)
|
|
..lineTo(0, 2400)
|
|
..lineTo(0, 1878)
|
|
..cubicTo(142, 1802, 294, 1786, 456, 1832)
|
|
..cubicTo(632, 1882, 786, 1832, 918, 1682)
|
|
..cubicTo(978, 1614, 1032, 1572, 1080, 1510)
|
|
..close();
|
|
canvas.drawPath(
|
|
bottomWave,
|
|
Paint()..color = const Color(0xFFEFF9FF).withValues(alpha: 0.9),
|
|
);
|
|
|
|
final softPanelPaint = Paint()
|
|
..color = Colors.white.withValues(alpha: 0.42)
|
|
..maskFilter = const MaskFilter.blur(BlurStyle.normal, 18);
|
|
canvas.drawRRect(
|
|
RRect.fromRectAndRadius(
|
|
const Rect.fromLTWH(126, 688, 828, 136),
|
|
const Radius.circular(42),
|
|
),
|
|
softPanelPaint,
|
|
);
|
|
canvas.drawRRect(
|
|
RRect.fromRectAndRadius(
|
|
const Rect.fromLTWH(180, 1528, 720, 128),
|
|
const Radius.circular(40),
|
|
),
|
|
softPanelPaint,
|
|
);
|
|
|
|
final linePaint = Paint()
|
|
..color = const Color(0xFFB6D7F2).withValues(alpha: 0.32)
|
|
..strokeWidth = 2;
|
|
for (var y = 470.0; y < 840; y += 72) {
|
|
canvas.drawLine(Offset(130, y), Offset(950, y - 46), linePaint);
|
|
}
|
|
|
|
void drawMessageCard({
|
|
required Rect rect,
|
|
required Color color,
|
|
required double alpha,
|
|
required bool alignRight,
|
|
}) {
|
|
final cardPaint = Paint()..color = color.withValues(alpha: alpha);
|
|
canvas.drawRRect(
|
|
RRect.fromRectAndRadius(rect, const Radius.circular(44)),
|
|
cardPaint,
|
|
);
|
|
|
|
final firstLineWidth = rect.width * (alignRight ? 0.48 : 0.56);
|
|
final secondLineWidth = rect.width * 0.34;
|
|
final x = alignRight ? rect.right - firstLineWidth - 44 : rect.left + 44;
|
|
final lineY = rect.top + rect.height * 0.38;
|
|
final messageLinePaint = Paint()
|
|
..color = const Color(0xFF9FC2DE).withValues(alpha: 0.38)
|
|
..strokeCap = StrokeCap.round
|
|
..strokeWidth = 12;
|
|
canvas.drawLine(
|
|
Offset(x, lineY),
|
|
Offset(x + firstLineWidth, lineY),
|
|
messageLinePaint,
|
|
);
|
|
canvas.drawLine(
|
|
Offset(x, lineY + 34),
|
|
Offset(x + secondLineWidth, lineY + 34),
|
|
messageLinePaint,
|
|
);
|
|
}
|
|
|
|
drawMessageCard(
|
|
rect: const Rect.fromLTWH(96, 1008, 438, 118),
|
|
color: Colors.white,
|
|
alpha: 0.52,
|
|
alignRight: false,
|
|
);
|
|
drawMessageCard(
|
|
rect: const Rect.fromLTWH(548, 1160, 436, 118),
|
|
color: const Color(0xFFE0F7F4),
|
|
alpha: 0.56,
|
|
alignRight: true,
|
|
);
|
|
|
|
canvas.restore();
|
|
}
|
|
|
|
@override
|
|
bool shouldRepaint(covariant _H5LoadingBackgroundPainter oldDelegate) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
class _BubbleCheckPainter extends CustomPainter {
|
|
const _BubbleCheckPainter();
|
|
|
|
static const _viewBox = Size(420, 360);
|
|
|
|
@override
|
|
void paint(Canvas canvas, Size size) {
|
|
final scale =
|
|
(size.width / _viewBox.width) < (size.height / _viewBox.height)
|
|
? size.width / _viewBox.width
|
|
: size.height / _viewBox.height;
|
|
final dx = (size.width - _viewBox.width * scale) / 2;
|
|
final dy = (size.height - _viewBox.height * scale) / 2;
|
|
|
|
canvas.save();
|
|
canvas.translate(dx, dy);
|
|
canvas.scale(scale);
|
|
|
|
final shadowPaint = Paint()
|
|
..color = const Color(0xFF026CD5).withValues(alpha: 0.18)
|
|
..maskFilter = const MaskFilter.blur(BlurStyle.normal, 32);
|
|
final backShadowPaint = Paint()
|
|
..color = const Color(0xFF0AAE9D).withValues(alpha: 0.12)
|
|
..maskFilter = const MaskFilter.blur(BlurStyle.normal, 24);
|
|
|
|
final backBubble = RRect.fromRectAndRadius(
|
|
const Rect.fromLTWH(34, 42, 176, 124),
|
|
const Radius.circular(54),
|
|
);
|
|
canvas.save();
|
|
canvas.translate(0, 18);
|
|
canvas.drawRRect(backBubble, backShadowPaint);
|
|
canvas.restore();
|
|
|
|
final backBubblePaint = Paint()
|
|
..shader = const LinearGradient(
|
|
begin: Alignment.topLeft,
|
|
end: Alignment.bottomRight,
|
|
colors: [
|
|
Color(0xFFE8FBF8),
|
|
Color(0xFFAEECE4),
|
|
],
|
|
).createShader(backBubble.outerRect);
|
|
canvas.drawRRect(backBubble, backBubblePaint);
|
|
|
|
final frontRect = const Rect.fromLTWH(78, 86, 284, 190);
|
|
final frontBubble = RRect.fromRectAndRadius(
|
|
frontRect,
|
|
const Radius.circular(72),
|
|
);
|
|
final frontTail = Path()
|
|
..moveTo(282, 250)
|
|
..cubicTo(316, 284, 352, 300, 388, 310)
|
|
..cubicTo(360, 284, 348, 252, 354, 222)
|
|
..close();
|
|
|
|
canvas.save();
|
|
canvas.translate(0, 22);
|
|
canvas.drawRRect(frontBubble, shadowPaint);
|
|
canvas.drawPath(frontTail, shadowPaint);
|
|
canvas.restore();
|
|
|
|
final bubblePaint = Paint()
|
|
..shader = const LinearGradient(
|
|
begin: Alignment.topLeft,
|
|
end: Alignment.bottomRight,
|
|
colors: [
|
|
Color(0xFFA8DDFF),
|
|
_shellAccent,
|
|
_shellAccentDeep,
|
|
],
|
|
stops: [0, 0.48, 1],
|
|
).createShader(frontRect);
|
|
canvas.drawPath(frontTail, bubblePaint);
|
|
canvas.drawRRect(frontBubble, bubblePaint);
|
|
|
|
final highlightPaint = Paint()
|
|
..shader = LinearGradient(
|
|
begin: Alignment.topLeft,
|
|
end: Alignment.bottomRight,
|
|
colors: [
|
|
Colors.white.withValues(alpha: 0.38),
|
|
Colors.white.withValues(alpha: 0),
|
|
],
|
|
).createShader(frontRect);
|
|
canvas.drawRRect(frontBubble, highlightPaint);
|
|
|
|
final glyphPaint = Paint()
|
|
..color = Colors.white.withValues(alpha: 0.94)
|
|
..style = PaintingStyle.stroke
|
|
..strokeWidth = 22
|
|
..strokeCap = StrokeCap.round
|
|
..strokeJoin = StrokeJoin.round;
|
|
canvas.drawLine(const Offset(154, 154), const Offset(288, 154), glyphPaint);
|
|
canvas.drawLine(const Offset(154, 204), const Offset(238, 204), glyphPaint);
|
|
canvas.drawCircle(
|
|
const Offset(306, 204),
|
|
12,
|
|
Paint()..color = Colors.white.withValues(alpha: 0.94),
|
|
);
|
|
|
|
canvas.restore();
|
|
}
|
|
|
|
@override
|
|
bool shouldRepaint(covariant _BubbleCheckPainter oldDelegate) {
|
|
return false;
|
|
}
|
|
}
|