LittleSheep/SimpleMathCalc
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🍱 Add app icon

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LittleSheep
2025-09-13 02:09:46 +08:00
parent 5ceaf76f16
commit 2575803aa4
83 changed files with 903 additions and 484 deletions
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209
lib/main.dart
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@@ -1,9 +1,11 @@
import 'package:flutter/material.dart';
import 'package:google_fonts/google_fonts.dart';
import 'package:latext/latext.dart';
import 'package:simple_math_calc/models/calculation_step.dart';
import 'package:simple_math_calc/solver.dart';
import 'dart:math';
import 'package:go_router/go_router.dart';
import 'screens/home_screen.dart';
final GoRouter _router = GoRouter(
routes: [GoRoute(path: '/', builder: (context, state) => const HomeScreen())],
);
void main() async {
runApp(const CalcApp());
@@ -14,7 +16,7 @@ class CalcApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
return MaterialApp.router(
title: '方程计算器',
theme: ThemeData(
primarySwatch: Colors.blue,
@@ -23,197 +25,14 @@ class CalcApp extends StatelessWidget {
Theme.of(context).textTheme, // Inherit existing text theme
),
),
home: const CalculatorHomePage(),
);
}
}
class CalculatorHomePage extends StatefulWidget {
const CalculatorHomePage({super.key});
@override
State<CalculatorHomePage> createState() => _CalculatorHomePageState();
}
class _CalculatorHomePageState extends State<CalculatorHomePage> {
final TextEditingController _controller = TextEditingController();
final SolverService _solverService = SolverService();
CalculationResult? _result;
bool _isLoading = false;
void _solveEquation() {
if (_controller.text.isEmpty) {
return;
}
setState(() {
_isLoading = true;
_result = null; // 清除上次结果
});
try {
// 调用核心服务来解决问题
final result = _solverService.solve(_controller.text);
setState(() {
_result = result;
});
} catch (e) {
// 错误处理
setState(() {
_result = CalculationResult(
steps: [],
finalAnswer: "错误: ${e.toString()}",
);
});
} finally {
setState(() {
_isLoading = false;
});
}
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('方程与表达式计算器'),
centerTitle: false,
leading: const Icon(Icons.calculate_outlined),
),
body: Column(
children: [
Padding(
padding: const EdgeInsets.only(left: 16.0, right: 16.0, top: 16.0),
child: Row(
spacing: 8,
children: [
Expanded(
child: TextField(
controller: _controller,
textAlign: TextAlign.center,
decoration: InputDecoration(
border: const OutlineInputBorder(),
labelText: '输入方程或表达式',
floatingLabelAlignment: FloatingLabelAlignment.center,
hintText: '例如: 2x^2 - 8x + 6 = 0',
),
onSubmitted: (_) => _solveEquation(),
),
),
IconButton(
onPressed: _solveEquation,
icon: Icon(Icons.play_arrow),
),
],
),
),
Expanded(
child: _isLoading
? const Center(child: CircularProgressIndicator())
: _result == null
? const Center(child: Text('请输入方程开始计算'))
: buildResultView(_result!),
),
],
),
);
}
// 构建结果展示视图
Widget buildResultView(CalculationResult result) {
return ListView(
padding: EdgeInsets.only(
left: 16,
right: 16,
bottom: MediaQuery.of(context).padding.bottom + 16,
top: 16,
),
children: [
...result.steps.map(
(step) => Card(
margin: const EdgeInsets.symmetric(vertical: 8),
child: ClipRRect(
borderRadius: const BorderRadius.all(Radius.circular(8)),
child: Stack(
children: [
Padding(
padding: const EdgeInsets.only(
left: 12,
right: 12,
bottom: 4,
top: 16,
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Text(
step.title,
style: Theme.of(context).textTheme.titleMedium,
),
const SizedBox(height: 4),
SelectableText(step.explanation),
Center(
child: LaTexT(
laTeXCode: Text(
step.formula,
style: Theme.of(context).textTheme.titleMedium,
),
),
),
],
),
),
Positioned(
left: -8,
top: -8,
child: Transform.rotate(
angle: pi / -5,
child: Opacity(
opacity: 0.8,
child: Badge(
backgroundColor: Theme.of(
context,
).colorScheme.primary,
label: Text(
step.stepNumber.toString(),
style: TextStyle(fontSize: 32),
),
),
),
),
),
],
),
),
),
darkTheme: ThemeData.dark().copyWith(
primaryColor: Colors.blue,
textTheme: GoogleFonts.notoSerifScTextTheme(
Theme.of(context).textTheme,
),
const SizedBox(height: 10),
Card(
color: Theme.of(context).colorScheme.primaryContainer,
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
child: Column(
children: [
const SizedBox(height: 16),
Text(
"最终答案",
style: Theme.of(context).textTheme.titleLarge?.copyWith(
color: Theme.of(context).colorScheme.onPrimaryContainer,
),
),
LaTexT(
laTeXCode: Text(
result.finalAnswer,
style: Theme.of(context).textTheme.titleMedium?.copyWith(
color: Theme.of(context).colorScheme.onPrimaryContainer,
),
),
),
],
),
),
),
],
),
themeMode: ThemeMode.system,
routerConfig: _router,
);
}
}