init
This commit is contained in:
sjk
393
client/lib/features/writing/screens/writing_exercise_screen.dart
Normal file
393
client/lib/features/writing/screens/writing_exercise_screen.dart
Normal file
@@ -0,0 +1,393 @@
|
||||
import 'dart:async';
|
||||
import 'package:flutter/material.dart';
|
||||
import '../models/writing_task.dart';
|
||||
import 'writing_result_screen.dart';
|
||||
|
||||
/// 写作练习页面
|
||||
class WritingExerciseScreen extends StatefulWidget {
|
||||
final WritingTask task;
|
||||
|
||||
const WritingExerciseScreen({
|
||||
super.key,
|
||||
required this.task,
|
||||
});
|
||||
|
||||
@override
|
||||
State<WritingExerciseScreen> createState() => _WritingExerciseScreenState();
|
||||
}
|
||||
|
||||
class _WritingExerciseScreenState extends State<WritingExerciseScreen> {
|
||||
final TextEditingController _textController = TextEditingController();
|
||||
Timer? _timer;
|
||||
int _remainingSeconds = 0;
|
||||
int _wordCount = 0;
|
||||
bool _isSubmitted = false;
|
||||
|
||||
@override
|
||||
void initState() {
|
||||
super.initState();
|
||||
final minutes = widget.task.timeLimit > 0 ? widget.task.timeLimit : 30;
|
||||
_remainingSeconds = minutes * 60;
|
||||
_startTimer();
|
||||
_textController.addListener(_updateWordCount);
|
||||
}
|
||||
|
||||
@override
|
||||
void dispose() {
|
||||
_timer?.cancel();
|
||||
_textController.dispose();
|
||||
super.dispose();
|
||||
}
|
||||
|
||||
void _startTimer() {
|
||||
_timer = Timer.periodic(const Duration(seconds: 1), (timer) {
|
||||
if (_remainingSeconds > 0) {
|
||||
setState(() {
|
||||
_remainingSeconds--;
|
||||
});
|
||||
} else {
|
||||
_submitWriting();
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
void _updateWordCount() {
|
||||
final text = _textController.text.trim();
|
||||
final words = text.isEmpty ? 0 : text.split(RegExp(r'\s+')).length;
|
||||
setState(() {
|
||||
_wordCount = words;
|
||||
});
|
||||
}
|
||||
|
||||
String _formatTime(int seconds) {
|
||||
final minutes = seconds ~/ 60;
|
||||
final remainingSeconds = seconds % 60;
|
||||
return '${minutes.toString().padLeft(2, '0')}:${remainingSeconds.toString().padLeft(2, '0')}';
|
||||
}
|
||||
|
||||
void _submitWriting() {
|
||||
if (_isSubmitted) return;
|
||||
|
||||
setState(() {
|
||||
_isSubmitted = true;
|
||||
});
|
||||
|
||||
_timer?.cancel();
|
||||
|
||||
Navigator.pushReplacement(
|
||||
context,
|
||||
MaterialPageRoute(
|
||||
builder: (context) => WritingResultScreen(
|
||||
task: widget.task,
|
||||
content: _textController.text,
|
||||
wordCount: _wordCount,
|
||||
timeUsed: widget.task.timeLimit * 60 - _remainingSeconds,
|
||||
),
|
||||
),
|
||||
);
|
||||
}
|
||||
|
||||
void _showSubmitDialog() {
|
||||
showDialog(
|
||||
context: context,
|
||||
builder: (context) => AlertDialog(
|
||||
title: const Text('提交写作'),
|
||||
content: Text('确定要提交吗？当前已写${_wordCount}词，剩余时间${_formatTime(_remainingSeconds)}。'),
|
||||
actions: [
|
||||
TextButton(
|
||||
onPressed: () => Navigator.pop(context),
|
||||
child: const Text('继续写作'),
|
||||
),
|
||||
TextButton(
|
||||
onPressed: () {
|
||||
Navigator.pop(context);
|
||||
_submitWriting();
|
||||
},
|
||||
child: const Text('确定提交'),
|
||||
),
|
||||
],
|
||||
),
|
||||
);
|
||||
}
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
return Scaffold(
|
||||
backgroundColor: const Color(0xFFF5F5F5),
|
||||
appBar: AppBar(
|
||||
title: Text(widget.task.title),
|
||||
backgroundColor: Colors.white,
|
||||
foregroundColor: Colors.black,
|
||||
elevation: 0,
|
||||
actions: [
|
||||
IconButton(
|
||||
icon: const Icon(Icons.help_outline),
|
||||
onPressed: _showTaskInfo,
|
||||
),
|
||||
],
|
||||
),
|
||||
body: Column(
|
||||
children: [
|
||||
_buildStatusBar(),
|
||||
Expanded(
|
||||
child: _buildWritingArea(),
|
||||
),
|
||||
_buildBottomBar(),
|
||||
],
|
||||
),
|
||||
);
|
||||
}
|
||||
|
||||
Widget _buildStatusBar() {
|
||||
final timeColor = _remainingSeconds < 300 ? Colors.red : const Color(0xFF2196F3); // 5分钟内显示红色
|
||||
final limit = widget.task.wordLimit > 0 ? widget.task.wordLimit : 200;
|
||||
final wordColor = _wordCount > limit ? Colors.red : const Color(0xFF4CAF50);
|
||||
|
||||
return Container(
|
||||
padding: const EdgeInsets.all(16),
|
||||
color: Colors.white,
|
||||
child: Row(
|
||||
children: [
|
||||
Expanded(
|
||||
child: _buildStatusItem(
|
||||
Icons.timer,
|
||||
'剩余时间',
|
||||
_formatTime(_remainingSeconds),
|
||||
timeColor,
|
||||
),
|
||||
),
|
||||
Container(
|
||||
width: 1,
|
||||
height: 40,
|
||||
color: Colors.grey[300],
|
||||
),
|
||||
Expanded(
|
||||
child: _buildStatusItem(
|
||||
Icons.text_fields,
|
||||
'字数统计',
|
||||
'$_wordCount/$limit',
|
||||
wordColor,
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
);
|
||||
}
|
||||
|
||||
Widget _buildStatusItem(IconData icon, String label, String value, Color color) {
|
||||
return Column(
|
||||
children: [
|
||||
Row(
|
||||
mainAxisAlignment: MainAxisAlignment.center,
|
||||
children: [
|
||||
Icon(
|
||||
icon,
|
||||
size: 16,
|
||||
color: color,
|
||||
),
|
||||
const SizedBox(width: 4),
|
||||
Text(
|
||||
label,
|
||||
style: const TextStyle(
|
||||
fontSize: 12,
|
||||
color: Colors.grey,
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
const SizedBox(height: 4),
|
||||
Text(
|
||||
value,
|
||||
style: TextStyle(
|
||||
fontSize: 18,
|
||||
fontWeight: FontWeight.bold,
|
||||
color: color,
|
||||
),
|
||||
),
|
||||
],
|
||||
);
|
||||
}
|
||||
|
||||
Widget _buildWritingArea() {
|
||||
return Container(
|
||||
margin: const EdgeInsets.all(16),
|
||||
padding: const EdgeInsets.all(20),
|
||||
decoration: BoxDecoration(
|
||||
color: Colors.white,
|
||||
borderRadius: BorderRadius.circular(16),
|
||||
boxShadow: [
|
||||
BoxShadow(
|
||||
color: Colors.black.withOpacity(0.05),
|
||||
blurRadius: 10,
|
||||
offset: const Offset(0, 2),
|
||||
),
|
||||
],
|
||||
),
|
||||
child: Column(
|
||||
crossAxisAlignment: CrossAxisAlignment.start,
|
||||
children: [
|
||||
Text(
|
||||
'写作提示：${widget.task.prompt}',
|
||||
style: const TextStyle(
|
||||
fontSize: 14,
|
||||
color: Colors.grey,
|
||||
fontStyle: FontStyle.italic,
|
||||
),
|
||||
),
|
||||
const SizedBox(height: 16),
|
||||
Expanded(
|
||||
child: TextField(
|
||||
controller: _textController,
|
||||
maxLines: null,
|
||||
expands: true,
|
||||
decoration: const InputDecoration(
|
||||
hintText: '请在此处开始写作...',
|
||||
border: InputBorder.none,
|
||||
hintStyle: TextStyle(
|
||||
color: Colors.grey,
|
||||
fontSize: 16,
|
||||
),
|
||||
),
|
||||
style: const TextStyle(
|
||||
fontSize: 16,
|
||||
height: 1.6,
|
||||
),
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
);
|
||||
}
|
||||
|
||||
Widget _buildBottomBar() {
|
||||
return Container(
|
||||
padding: const EdgeInsets.all(16),
|
||||
color: Colors.white,
|
||||
child: Row(
|
||||
children: [
|
||||
Expanded(
|
||||
child: OutlinedButton(
|
||||
onPressed: _showTaskInfo,
|
||||
style: OutlinedButton.styleFrom(
|
||||
foregroundColor: const Color(0xFF2196F3),
|
||||
side: const BorderSide(color: Color(0xFF2196F3)),
|
||||
shape: RoundedRectangleBorder(
|
||||
borderRadius: BorderRadius.circular(12),
|
||||
),
|
||||
padding: const EdgeInsets.symmetric(vertical: 16),
|
||||
),
|
||||
child: const Text('查看要求'),
|
||||
),
|
||||
),
|
||||
const SizedBox(width: 16),
|
||||
Expanded(
|
||||
child: ElevatedButton(
|
||||
onPressed: _wordCount > 0 ? _showSubmitDialog : null,
|
||||
style: ElevatedButton.styleFrom(
|
||||
backgroundColor: const Color(0xFF2196F3),
|
||||
foregroundColor: Colors.white,
|
||||
shape: RoundedRectangleBorder(
|
||||
borderRadius: BorderRadius.circular(12),
|
||||
),
|
||||
padding: const EdgeInsets.symmetric(vertical: 16),
|
||||
elevation: 0,
|
||||
),
|
||||
child: const Text(
|
||||
'提交写作',
|
||||
style: TextStyle(
|
||||
fontWeight: FontWeight.bold,
|
||||
),
|
||||
),
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
);
|
||||
}
|
||||
|
||||
void _showTaskInfo() {
|
||||
showModalBottomSheet(
|
||||
context: context,
|
||||
isScrollControlled: true,
|
||||
backgroundColor: Colors.transparent,
|
||||
builder: (context) => Container(
|
||||
height: MediaQuery.of(context).size.height * 0.7,
|
||||
decoration: const BoxDecoration(
|
||||
color: Colors.white,
|
||||
borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
|
||||
),
|
||||
child: Column(
|
||||
children: [
|
||||
Container(
|
||||
padding: const EdgeInsets.all(20),
|
||||
child: Row(
|
||||
children: [
|
||||
const Expanded(
|
||||
child: Text(
|
||||
'写作要求',
|
||||
style: TextStyle(
|
||||
fontSize: 20,
|
||||
fontWeight: FontWeight.bold,
|
||||
),
|
||||
),
|
||||
),
|
||||
IconButton(
|
||||
onPressed: () => Navigator.pop(context),
|
||||
icon: const Icon(Icons.close),
|
||||
),
|
||||
],
|
||||
),
|
||||
),
|
||||
Expanded(
|
||||
child: SingleChildScrollView(
|
||||
padding: const EdgeInsets.symmetric(horizontal: 20),
|
||||
child: Column(
|
||||
crossAxisAlignment: CrossAxisAlignment.start,
|
||||
children: [
|
||||
_buildInfoSection('写作提示', widget.task.prompt ?? '暂无写作提示'),
|
||||
const SizedBox(height: 20),
|
||||
_buildInfoSection('写作要求', widget.task.requirements.join('\n• ')),
|
||||
if (widget.task.keywords.isNotEmpty) ...[
|
||||
const SizedBox(height: 20),
|
||||
_buildInfoSection('关键词', widget.task.keywords.join(', ')),
|
||||
],
|
||||
],
|
||||
),
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
),
|
||||
);
|
||||
}
|
||||
|
||||
Widget _buildInfoSection(String title, String content) {
|
||||
return Column(
|
||||
crossAxisAlignment: CrossAxisAlignment.start,
|
||||
children: [
|
||||
Text(
|
||||
title,
|
||||
style: const TextStyle(
|
||||
fontSize: 16,
|
||||
fontWeight: FontWeight.bold,
|
||||
),
|
||||
),
|
||||
const SizedBox(height: 8),
|
||||
Container(
|
||||
padding: const EdgeInsets.all(16),
|
||||
decoration: BoxDecoration(
|
||||
color: Colors.grey[50],
|
||||
borderRadius: BorderRadius.circular(12),
|
||||
),
|
||||
child: Text(
|
||||
content,
|
||||
style: const TextStyle(
|
||||
fontSize: 14,
|
||||
height: 1.5,
|
||||
),
|
||||
),
|
||||
),
|
||||
],
|
||||
);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user