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498 lines
17 KiB
498 lines
17 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 '../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 GetView<ChatController> {
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ChatView({Key? key}) : super(key: key);
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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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@override
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Widget build(BuildContext context) {
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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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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.recognizedText.isEmpty ? '你可以开始说话' : '正在聆听...',
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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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final barCount = 23; // 条形数量
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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.recognizedText.isNotEmpty;
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final isRec = controller.isListening.value;
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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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// 创建动态高度效果，确保高度始终为正值
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double height = isRec
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? _getWaveHeight(index, isSpeaking, barCount).clamp(2.h, 22.5.h)
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: 2.h;
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// 动画持续时间
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final duration = Duration(
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milliseconds: isSpeaking ? 60 + (index % 4) * 20 : 150 + (index % 3) * 50
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);
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// 颜色计算
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Color barColor;
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if (isRec) {
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if (isSpeaking) {
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final middleIndex = barCount ~/ 2;
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final distance = (index - middleIndex).abs();
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final maxDistance = middleIndex;
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final colorIntensity = 1.0 - (distance / maxDistance) * 0.2;
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barColor = index % 3 == 0
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? AppColors.primary
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: AppColors.primary.withOpacity(colorIntensity);
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} else {
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barColor = AppColors.primary.withOpacity(0.3);
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}
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} else {
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barColor = Colors.grey.shade400;
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}
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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: AnimatedContainer(
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duration: duration,
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curve: isSpeaking ? Curves.elasticOut : Curves.easeInOut,
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width: isSpeaking ? 2.8.w : 2.5.w,
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height: height > 0 ? height : 2.h, // 确保高度始终为正值
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margin: EdgeInsets.symmetric(horizontal: 1.2.w),
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decoration: BoxDecoration(
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color: barColor,
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borderRadius: BorderRadius.circular(2.r),
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boxShadow: isSpeaking ? [
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BoxShadow(
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color: AppColors.primary.withOpacity(0.4),
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blurRadius: 5,
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spreadRadius: 1.2,
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offset: const Offset(0, 0), // 确保偏移量不为null
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)
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] : null,
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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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}
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// 生成动态波形高度
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double _getWaveHeight(int index, bool isSpeaking, int barCount) {
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try {
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// 基础高度
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double baseHeight = isSpeaking ? 5.h : 3.h;
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// 获取当前时间毫秒数
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final DateTime now = DateTime.now();
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final int milliseconds = now.millisecondsSinceEpoch;
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// 计算中心位置
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final middleIndex = barCount ~/ 2;
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final distanceFromMiddle = (index - middleIndex).abs();
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// 使用多个正弦波叠加
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double freqMultiplier = isSpeaking ? 2.2 : 1.0;
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double ampMultiplier = isSpeaking ? 1.8 : 1.0;
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double wave1 = sin((milliseconds / 150) * freqMultiplier + (index * 0.8)) * 2.h * ampMultiplier;
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double wave2 = sin((milliseconds / 280) * freqMultiplier + (index * 0.5)) * 1.5.h * ampMultiplier;
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double wave3 = sin((milliseconds / 340) * freqMultiplier + (index * 0.3)) * 1.25.h * ampMultiplier;
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double wave4 = cos((milliseconds / 220) * freqMultiplier + (index * 0.7)) * 1.h * ampMultiplier;
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// 基于距离中心的位置计算高度衰减
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double positionFactor = isSpeaking
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? 1.0 - (distanceFromMiddle / middleIndex) * 0.2
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: 1.0 - (distanceFromMiddle / middleIndex) * 0.5;
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// 确保positionFactor不为负值
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positionFactor = max(0.1, positionFactor);
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double result;
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if (isSpeaking) {
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// 用户说话时的波形
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double timeFactor = 0.9 + sin(milliseconds / 600) * 0.5;
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// 增强中心突出效果
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double centerBoost = pow(positionFactor, 1.2).toDouble() * 10.h;
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// 增加随机性，但限制范围
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double randomFactor = (Random().nextDouble() * 3) * 1.75.h;
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// 增强脉冲效果
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double pulseEffect = sin(milliseconds / 300) * 2.5.h * positionFactor;
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// 添加额外的随机波动
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double voiceVariation = sin(milliseconds / 80 + index * 1.2) * 1.5.h * Random().nextDouble();
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// 添加爆发效果
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double burstEffect = 0;
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if (Random().nextDouble() > 0.97) {
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burstEffect = 5.h * positionFactor;
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}
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result = baseHeight + (wave1 + wave2 + wave3 + wave4) * timeFactor +
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centerBoost + randomFactor + pulseEffect + voiceVariation + burstEffect;
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} else {
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// 用户不说话时的波形
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double idleWave = (wave1 + wave2) * 0.35 * positionFactor;
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double gentlePulse = sin(milliseconds / 800) * 1.h * positionFactor;
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result = baseHeight + idleWave + gentlePulse;
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}
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// 确保返回值始终为正数
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return max(2.h, result);
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} catch (e) {
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// 发生错误时返回默认高度
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return 2.h;
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}
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}
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}
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