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495 lines
15 KiB
495 lines
15 KiB
import 'package:flutter/material.dart';
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import 'package:get/get.dart';
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import 'package:flutter_screenutil/flutter_screenutil.dart';
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import 'dart:math';
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import 'package:audio_waveforms/audio_waveforms.dart';
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import '../controllers/chat_controller.dart';
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import '../models/message_model.dart';
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import '../../../core/theme/app_colors.dart';
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import '../../../core/widgets/message_bubble.dart';
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class ChatView extends StatefulWidget {
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const ChatView({Key? key}) : super(key: key);
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@override
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State<ChatView> createState() => _ChatViewState();
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}
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class _ChatViewState extends State<ChatView> with TickerProviderStateMixin {
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// 获取控制器
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ChatController get controller => Get.find<ChatController>();
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// 添加ScrollController用于控制滚动
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final ScrollController _scrollController = ScrollController();
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// 添加一个动画控制器，用于波形动画
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late final AnimationController _waveAnimationController;
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// 添加录音控制器，用于获取麦克风数据
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late final RecorderController _recorderController;
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@override
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void initState() {
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super.initState();
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// 初始化动画控制器
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_waveAnimationController = AnimationController(
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vsync: this,
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duration: const Duration(milliseconds: 1000),
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)..repeat();
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// 初始化录音控制器
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_recorderController = RecorderController()
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..androidEncoder = AndroidEncoder.aac
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..androidOutputFormat = AndroidOutputFormat.mpeg4
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..iosEncoder = IosEncoder.kAudioFormatMPEG4AAC
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..sampleRate = 44100
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..bitRate = 128000
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..updateFrequency = const Duration(milliseconds: 50); // 更新频率
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// 初始化录音控制器
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_initializeRecorder();
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// 监听消息列表变化，自动滚动到底部
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ever(controller.messages, (_) {
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// 使用Future.delayed确保在UI更新后滚动
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Future.delayed(Duration(milliseconds: 50), () {
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if (_scrollController.hasClients &&
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_scrollController.position.maxScrollExtent > 0 &&
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(_scrollController.position.maxScrollExtent - _scrollController.offset) < 200) {
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_scrollController.animateTo(
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_scrollController.position.maxScrollExtent,
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duration: Duration(milliseconds: 100),
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curve: Curves.easeOut,
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);
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}
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});
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});
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// 监听语音识别状态变化
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ever(controller.isVoiceRecognitionActive, (isActive) {
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if (isActive) {
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// 开始录音以获取波形数据
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_recorderController.record();
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} else {
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// 停止录音
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_recorderController.stop();
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}
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});
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}
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// 初始化录音控制器
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Future<void> _initializeRecorder() async {
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try {
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// 请求录音权限
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await _recorderController.checkPermission();
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// 如果当前正在进行语音识别，开始录音
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if (controller.isVoiceRecognitionActive.value) {
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await _recorderController.record();
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}
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} catch (e) {
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print('初始化录音控制器失败: $e');
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}
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}
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@override
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void dispose() {
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_scrollController.dispose();
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_waveAnimationController.dispose();
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_recorderController.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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backgroundColor: Colors.white, // 设置Scaffold背景为白色
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appBar: AppBar(
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leading: IconButton(
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icon: Icon(Icons.arrow_back_ios, color: Colors.black),
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onPressed: () => Get.back(),
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),
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title: Row(
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children: [
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CircleAvatar(
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backgroundImage: AssetImage(controller.agent.avatarUrl),
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radius: 18.r,
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),
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SizedBox(width: 10.w),
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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mainAxisSize: MainAxisSize.min,
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children: [
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Text(
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controller.agent.name,
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style: TextStyle(
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fontSize: 16.sp,
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fontWeight: FontWeight.bold,
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color: Colors.black,
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),
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),
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Text(
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controller.agent.description.length > 20
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? '${controller.agent.description.substring(0, 20)}...'
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: controller.agent.description,
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style: TextStyle(
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fontSize: 12.sp,
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color: Colors.grey,
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),
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maxLines: 1,
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overflow: TextOverflow.ellipsis,
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),
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],
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),
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),
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],
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),
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actions: [
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// TTS开关
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Obx(() => IconButton(
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icon: Icon(
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controller.isTtsEnabled.value
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? Icons.volume_up
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: Icons.volume_off,
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color: controller.isTtsEnabled.value
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? AppColors.primary
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: Colors.grey,
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),
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onPressed: controller.toggleTts,
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)),
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// 更多选项
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PopupMenuButton(
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icon: Icon(Icons.more_vert, color: Colors.black),
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itemBuilder: (context) => [
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PopupMenuItem(
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value: 'clear',
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child: Row(
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children: [
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Icon(Icons.delete_outline, color: Colors.red),
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SizedBox(width: 8.w),
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Text('清空对话'),
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],
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),
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),
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],
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onSelected: (value) {
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if (value == 'clear') {
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controller.clearChat();
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}
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},
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),
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],
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elevation: 0,
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backgroundColor: Colors.white,
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),
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body: Container(
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color: Colors.white, // 确保body背景也是白色
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child: Column(
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children: [
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// 消息列表
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Expanded(
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child: Obx(() => ListView.builder(
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controller: controller.scrollController,
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padding: EdgeInsets.symmetric(horizontal: 16.w, vertical: 10.h),
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itemCount: controller.messages.length,
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reverse: false,
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physics: const AlwaysScrollableScrollPhysics(),
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cacheExtent: 1000, // 增加缓存范围，减少重建
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itemBuilder: (context, index) {
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final message = controller.messages[index];
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return MessageBubble(
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key: ObjectKey(message), // 使用ObjectKey而不是ValueKey
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message: message,
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isUser: message.role == 'user',
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);
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},
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)),
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),
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// 输入区域 - 根据当前模式显示不同的输入面板
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Obx(() => controller.isVoiceRecognitionActive.value
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? _buildVoiceInputPanel()
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: _buildTextInputPanel()),
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],
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),
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),
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);
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}
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// 构建文本输入面板
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Widget _buildTextInputPanel() {
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// 创建一个TextEditingController来控制输入框
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final TextEditingController textController = TextEditingController(text: controller.inputText.value);
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// 监听输入变化
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textController.addListener(() {
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controller.inputText.value = textController.text;
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});
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return Container(
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padding: EdgeInsets.symmetric(horizontal: 16.w, vertical: 8.h),
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decoration: BoxDecoration(
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color: Colors.white,
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boxShadow: [
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BoxShadow(
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color: Colors.black.withOpacity(0.05),
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blurRadius: 5,
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offset: Offset(0, -1),
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),
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],
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),
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child: Row(
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children: [
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// 语音输入按钮
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IconButton(
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icon: Icon(
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Icons.mic_none,
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color: Colors.grey,
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),
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onPressed: controller.startVoiceRecognition,
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),
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// 文本输入框
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Expanded(
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child: TextField(
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controller: textController,
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decoration: InputDecoration(
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hintText: '发消息...',
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(20.r),
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borderSide: BorderSide.none,
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),
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filled: true,
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fillColor: Colors.grey[200],
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contentPadding: EdgeInsets.symmetric(
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horizontal: 16.w,
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vertical: 8.h,
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),
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),
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maxLines: null,
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textInputAction: TextInputAction.send,
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onSubmitted: (value) {
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if (value.trim().isNotEmpty) {
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controller.sendMessage(value);
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textController.clear();
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}
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},
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),
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),
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// 发送按钮
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Obx(() => IconButton(
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icon: Icon(
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Icons.send,
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color: controller.inputText.value.trim().isEmpty
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? Colors.grey
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: AppColors.primary,
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),
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onPressed: controller.inputText.value.trim().isEmpty
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? null
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: () {
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controller.sendMessage(controller.inputText.value);
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textController.clear();
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},
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)),
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],
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),
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);
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}
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// 构建语音输入面板
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Widget _buildVoiceInputPanel() {
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final screenWidth = Get.width;
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return Container(
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width: screenWidth,
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decoration: const BoxDecoration(
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gradient: LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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colors: [
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Color(0xFFFFFFFF), // 纯白色开始
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Color(0xFFE8D5F5), // 更深的紫色结束
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],
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stops: [0.3, 1.0], // 调整颜色分布，让白色占据更多空间
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),
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),
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child: SafeArea(
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child: SizedBox(
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height: 100.h,
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child: Center(
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child: Padding(
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padding: EdgeInsets.symmetric(horizontal: 20.w),
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child: Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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crossAxisAlignment: CrossAxisAlignment.center,
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children: [
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// 左侧麦克风按钮
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_buildMicrophoneButton(),
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// 中间音频波形和状态文本
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Expanded(
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child: Column(
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mainAxisSize: MainAxisSize.min,
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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// 音频波形
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_buildAudioWaveform(),
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SizedBox(height: 10.h),
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// 状态文本
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Obx(() => Text(
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controller.isSpeechDetected.value ? '正在聆听...' : '你可以开始说话',
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style: TextStyle(
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fontSize: 16.sp,
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color: Colors.grey.shade700,
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fontWeight: FontWeight.w500,
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),
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)),
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],
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),
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),
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// 右侧关闭按钮
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_buildCloseButton(),
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],
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),
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),
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),
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),
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),
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);
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}
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// 麦克风按钮
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Widget _buildMicrophoneButton() {
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return Container(
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width: 60.w,
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height: 60.w,
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decoration: BoxDecoration(
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color: Colors.white,
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shape: BoxShape.circle,
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boxShadow: [
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BoxShadow(
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color: Colors.black.withOpacity(0.05),
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blurRadius: 10,
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spreadRadius: 1,
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),
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],
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),
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child: Center(
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child: Obx(() => IconButton(
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icon: Icon(
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controller.isListening.value ? Icons.mic : Icons.mic_none,
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color: controller.isListening.value ? AppColors.primary : Colors.grey.shade400,
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size: 28.sp,
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),
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onPressed: controller.stopVoiceRecognition,
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padding: EdgeInsets.zero,
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)),
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),
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);
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}
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// 关闭按钮
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Widget _buildCloseButton() {
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return Container(
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width: 60.w,
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height: 60.w,
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decoration: BoxDecoration(
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color: Colors.white,
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shape: BoxShape.circle,
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boxShadow: [
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BoxShadow(
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color: Colors.black.withOpacity(0.05),
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blurRadius: 10,
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spreadRadius: 1,
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),
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],
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),
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child: Center(
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child: IconButton(
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icon: Icon(
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Icons.close,
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color: Colors.grey.shade600,
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size: 28.sp,
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),
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onPressed: controller.stopVoiceRecognition,
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padding: EdgeInsets.zero,
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),
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),
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);
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}
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// 音频波形
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Widget _buildAudioWaveform() {
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return SizedBox(
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width: 220.w,
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height: 50.h,
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child: Obx(() {
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final isSpeaking = controller.isSpeechDetected.value;
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final isRec = controller.isListening.value;
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if (!isRec) {
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// 如果没有在录音，显示静态波形
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return _buildStaticWaveform();
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}
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// 使用AudioWaveforms组件显示实时波形
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return AudioWaveforms(
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enableGesture: false,
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size: Size(220.w, 50.h),
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recorderController: _recorderController,
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waveStyle: WaveStyle(
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waveColor: isSpeaking
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? AppColors.primary
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: AppColors.primary.withOpacity(0.3),
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extendWaveform: true,
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showMiddleLine: false,
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spacing: 4.0,
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waveThickness: 3.0,
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showDurationLabel: false,
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scaleFactor: 80, // 调整波形高度
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),
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(12.r),
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color: Colors.transparent,
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),
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padding: EdgeInsets.symmetric(horizontal: 8.w),
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margin: EdgeInsets.only(bottom: 5.h),
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);
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}),
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);
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}
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// 静态波形（当没有录音时显示）
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Widget _buildStaticWaveform() {
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final barCount = 23; // 条形数量
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return Row(
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mainAxisSize: MainAxisSize.min,
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mainAxisAlignment: MainAxisAlignment.center,
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children: List.generate(
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barCount,
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(index) {
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// 静态高度
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final height = 2.h;
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return SizedBox(
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width: 5.5.w,
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child: Center(
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child: Container(
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width: 2.5.w,
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height: height,
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margin: EdgeInsets.symmetric(horizontal: 1.2.w),
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decoration: BoxDecoration(
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color: Colors.grey.shade400,
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borderRadius: BorderRadius.circular(2.r),
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),
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),
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),
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);
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},
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),
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);
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}
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}
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