✨ Virtual toolbar

2025-09-13 02:36:31 +08:00
parent 3b315d26fa
commit 43f669745e
3 changed files with 75 additions and 7 deletions
--- a/ios/Podfile.lock
+++ b/ios/Podfile.lock
@@ -5,11 +5,14 @@ PODS:
  - path_provider_foundation (0.0.1):
    - Flutter
    - FlutterMacOS
+  - url_launcher_ios (0.0.1):
+    - Flutter

 DEPENDENCIES:
  - Flutter (from `Flutter`)
  - flutter_native_splash (from `.symlinks/plugins/flutter_native_splash/ios`)
  - path_provider_foundation (from `.symlinks/plugins/path_provider_foundation/darwin`)
+  - url_launcher_ios (from `.symlinks/plugins/url_launcher_ios/ios`)

 EXTERNAL SOURCES:
  Flutter:
@@ -18,11 +21,14 @@ EXTERNAL SOURCES:
    :path: ".symlinks/plugins/flutter_native_splash/ios"
  path_provider_foundation:
    :path: ".symlinks/plugins/path_provider_foundation/darwin"
+  url_launcher_ios:
+    :path: ".symlinks/plugins/url_launcher_ios/ios"

 SPEC CHECKSUMS:
  Flutter: cabc95a1d2626b1b06e7179b784ebcf0c0cde467
  flutter_native_splash: c32d145d68aeda5502d5f543ee38c192065986cf
  path_provider_foundation: 080d55be775b7414fd5a5ef3ac137b97b097e564
+  url_launcher_ios: 694010445543906933d732453a59da0a173ae33d

 PODFILE CHECKSUM: 3c63482e143d1b91d2d2560aee9fb04ecc74ac7e

--- a/lib/screens/about_page.dart
+++ b/lib/screens/about_page.dart
@@ -43,7 +43,7 @@ class AboutPage extends StatelessWidget {
                Opacity(
                  opacity: 0.8,
                  child: Text(
-                    '这是一个用于求解方程和表达式的计算器应用。\n支持多种类型的数学计算，包括代数方程、表达式求值等。\n\n结果仅供参考，纯机器计算，无 AI 成分。\n\n在书写方程的时候，请勿使用中文符号，平方请使用 ^n 来表示 n 次方。\n\n理性使用，仅为辅助学习目的，过量使用有害考试成绩。',
+                    '这是一个用于求解方程和表达式的计算器应用。\n支持多种类型的数学计算，包括代数方程、表达式求值等。\n\n结果仅供参考，纯机器计算，无 AI 成分。\n\n在书写方程的时候，请勿使用中文符号，平方请使用 ^n 来表示 n 次方。\n\n虽然本项目存在的原因是小羊不想写数学作业，但是我还是要说\n理性使用，仅为辅助学习目的，过量使用有害考试成绩。',
                    style: Theme.of(context).textTheme.bodyMedium,
                    textAlign: TextAlign.center,
                  ),
@@ -78,7 +78,7 @@ class AboutPage extends StatelessWidget {

  Future<void> _launchUrl(String url) async {
    final Uri uri = Uri.parse(url);
-    if (!await launchUrl(uri)) {
+    if (!await launchUrl(uri, mode: LaunchMode.externalApplication)) {
      throw Exception('Could not launch $url');
    }
  }
--- a/lib/screens/calculator_home_page.dart
+++ b/lib/screens/calculator_home_page.dart
@@ -1,4 +1,5 @@
 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';
@@ -14,9 +15,28 @@ class CalculatorHomePage extends StatefulWidget {
 class _CalculatorHomePageState extends State<CalculatorHomePage> {
  final TextEditingController _controller = TextEditingController();
  final SolverService _solverService = SolverService();
+  late final FocusNode _focusNode;

  CalculationResult? _result;
  bool _isLoading = false;
+  bool _isInputFocused = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _focusNode = FocusNode();
+    _focusNode.addListener(() {
+      setState(() {
+        _isInputFocused = _focusNode.hasFocus;
+      });
+    });
+  }
+
+  @override
+  void dispose() {
+    _focusNode.dispose();
+    super.dispose();
+  }

  void _solveEquation() {
    if (_controller.text.isEmpty) {
@@ -48,6 +68,16 @@ class _CalculatorHomePageState extends State<CalculatorHomePage> {
    }
  }

+  void _insertSymbol(String symbol) {
+    final text = _controller.text;
+    final selection = _controller.selection;
+    final newText = text.replaceRange(selection.start, selection.end, symbol);
+    _controller.text = newText;
+    _controller.selection = TextSelection.collapsed(
+      offset: selection.start + symbol.length,
+    );
+  }
+
  @override
  Widget build(BuildContext context) {
    return Scaffold(
@@ -66,6 +96,7 @@ class _CalculatorHomePageState extends State<CalculatorHomePage> {
                Expanded(
                  child: TextField(
                    controller: _controller,
+                    focusNode: _focusNode,
                    textAlign: TextAlign.center,
                    decoration: InputDecoration(
                      border: const OutlineInputBorder(),
@@ -74,8 +105,6 @@ class _CalculatorHomePageState extends State<CalculatorHomePage> {
                      hintText: '例如: 2x^2 - 8x + 6 = 0',
                    ),
                    onSubmitted: (_) => _solveEquation(),
-                    onTapOutside: (_) =>
-                        FocusManager.instance.primaryFocus?.unfocus(),
                  ),
                ),
                IconButton(
@@ -92,6 +121,7 @@ class _CalculatorHomePageState extends State<CalculatorHomePage> {
                ? const Center(child: Text('请输入方程开始计算'))
                : buildResultView(_result!),
          ),
+          if (_isInputFocused) _buildToolbar(),
        ],
      ),
    );
@@ -118,7 +148,7 @@ class _CalculatorHomePageState extends State<CalculatorHomePage> {
                    padding: const EdgeInsets.only(
                      left: 12,
                      right: 12,
-                      bottom: 4,
+                      bottom: 16,
                      top: 16,
                    ),
                    child: Column(
@@ -169,10 +199,9 @@ class _CalculatorHomePageState extends State<CalculatorHomePage> {
        Card(
          color: Theme.of(context).colorScheme.primaryContainer,
          child: Padding(
-            padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+            padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 24),
            child: Column(
              children: [
-                const SizedBox(height: 16),
                Text(
                  "最终答案",
                  style: Theme.of(context).textTheme.titleLarge?.copyWith(
@@ -194,4 +223,37 @@ class _CalculatorHomePageState extends State<CalculatorHomePage> {
      ],
    );
  }
+
+  Widget _buildToolbar() {
+    return Material(
+      elevation: 8,
+      child: Padding(
+        padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 12),
+        child: Row(
+          mainAxisAlignment: MainAxisAlignment.spaceEvenly,
+          spacing: 16,
+          children: [
+            Expanded(
+              child: ElevatedButton(
+                onPressed: () => _insertSymbol('('),
+                child: Text('(', style: GoogleFonts.robotoMono()),
+              ),
+            ),
+            Expanded(
+              child: ElevatedButton(
+                onPressed: () => _insertSymbol(')'),
+                child: Text(')', style: GoogleFonts.robotoMono()),
+              ),
+            ),
+            Expanded(
+              child: ElevatedButton(
+                onPressed: () => _insertSymbol('^'),
+                child: Text('^', style: GoogleFonts.robotoMono()),
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
 }