feat:增加分享图片功能

lib/utils/screenshot_util.dart

@@ -0,0 +1,61 @@
+import 'dart:io';
+import 'dart:typed_data';
+import 'dart:ui' as ui;
+import 'package:flutter/material.dart';
+import 'package:flutter/rendering.dart';
+import 'package:food_hub_app/widgets/common/index.dart';
+import 'package:path_provider/path_provider.dart';
+import 'package:share_plus/share_plus.dart';
+
+/// 截图工具类
+class ScreenshotUtil {
+  // 截图功能
+  static Future<Uint8List?> captureRecipeImage({
+    required GlobalKey globalKey,
+    double pixelRatio = 3.0,
+    Duration delay = const Duration(milliseconds: 50),
+  }) async {
+    // 等待一帧确保UI已渲染
+    await Future.delayed(delay);
+    final RenderObject? render = globalKey.currentContext!.findRenderObject();
+    final RenderRepaintBoundary boundary = render as RenderRepaintBoundary;
+    final ui.Image image = await boundary.toImage(pixelRatio: pixelRatio);
+    final ByteData? byteData = await image.toByteData(
+      format: ui.ImageByteFormat.png,
+    );
+
+    return byteData?.buffer.asUint8List();
+  }
+
+  // 保存图片到临时文件
+  static Future<File> saveImageToFile(Uint8List bytes, String fileName) async {
+    final directory = await getTemporaryDirectory();
+    final File imageFile = File('${directory.path}/$fileName');
+    await imageFile.writeAsBytes(bytes);
+    return imageFile;
+  }
+
+  static Future<void> captureAndShare({
+    required GlobalKey globalKey,
+    required String fileName,
+    required String shareText,
+  }) async {
+    try {
+      final imageBytes = await captureRecipeImage(globalKey: globalKey);
+
+      if (imageBytes != null) {
+        final imageFile = await saveImageToFile(imageBytes, fileName);
+        await SharePlus.instance.share(
+          ShareParams(files: [XFile(imageFile.path)], text: shareText),
+        );
+
+        // 分享后删除临时文件
+        await imageFile.delete();
+      } else {
+        showErrorToast('生成图片失败，请重试');
+      }
+    } catch (e) {
+      showErrorToast('分享失败: $e');
+    }
+  }
+}

lib/views/home.dart

@@ -44,14 +44,17 @@ class _HomePage extends State<HomePage> {
                 onPressed: () {
                   buildBottomSheet(context);
                 },
-              )
+              ),
             ],
-          )
+          ),
         ],
       ),
       // backgroundColor: Color(0xFFF5F5F5),
       drawer: SettingsDrawer(),
-      body: Padding(padding: EdgeInsets.all(10), child: tabPages[_currentIndex]),
+      body: Padding(
+        padding: EdgeInsets.all(10),
+        child: tabPages[_currentIndex],
+      ),
       bottomNavigationBar: buildBottomNavBar(
         currentIndex: _currentIndex,
         onTap: (index) {

lib/views/recipe_detail.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:food_hub_app/apis/recipe.dart';
 import 'package:food_hub_app/models/recipe.dart';
+import 'package:food_hub_app/utils/screenshot_util.dart';
 import 'package:food_hub_app/widgets/common/index.dart';
 
 class RecipeDetailPage extends StatefulWidget {
@@ -12,6 +13,8 @@ class RecipeDetailPage extends StatefulWidget {
 
 class _RecipeDetailState extends State<RecipeDetailPage> {
   RecipeDetail recipe = RecipeDetail.getEmpty();
+  final GlobalKey _recipeDetailKey = GlobalKey();
+  bool _isSharing = false;
 
   // 定义三个分类列表
   List<RecipeMaterial> mainMaterialList = []; // 主料
@@ -36,6 +39,10 @@ class _RecipeDetailState extends State<RecipeDetailPage> {
   }
 
   void getRecipeMaterial() {
+    mainMaterialList.clear();
+    auxiliaryMaterialList.clear();
+    accessoryMaterialList.clear();
+
     for (var material in recipe.materialList) {
       switch (material.type) {
         case '主料':
@@ -51,12 +58,45 @@ class _RecipeDetailState extends State<RecipeDetailPage> {
     }
   }
 
+  // 分享图片
+  Future<void> _shareRecipeAsImage() async {
+    if (_isSharing) return;
+
+    setState(() {
+      _isSharing = true;
+    });
+
+    final timestamp = DateTime.now().millisecondsSinceEpoch;
+    final imageName = '${recipe.name}_$timestamp.png';
+    await ScreenshotUtil.captureAndShare(
+      globalKey: _recipeDetailKey,
+      fileName: imageName,
+      shareText: '分享菜谱: ${recipe.name}',
+    );
+
+    setState(() {
+      _isSharing = false;
+    });
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(title: Text('菜谱信息')),
       body: SingleChildScrollView(
-        child: Padding(padding: EdgeInsets.all(10), child: _buildRecipeDetail()),
+        child: Column(
+          children: [
+            // 用RepaintBoundary包裹要截图的部分
+            RepaintBoundary(
+              key: _recipeDetailKey,
+              child: Padding(
+                padding: EdgeInsets.all(10),
+                child: _buildRecipeDetail(),
+              ),
+            ),
+            _buildButtons(),
+          ],
+        ),
       ),
     );
   }
@@ -206,4 +246,17 @@ class _RecipeDetailState extends State<RecipeDetailPage> {
       ),
     );
   }
+
+  Widget _buildButtons() {
+    return Row(
+      mainAxisAlignment: MainAxisAlignment.center,
+      children: [
+        circleIconButton(
+          context: context,
+          icon: _isSharing ? Icons.hourglass_top : Icons.share,
+          onPressed: _shareRecipeAsImage,
+        ),
+      ],
+    );
+  }
 }

linux/flutter/generated_plugin_registrant.cc

@@ -7,9 +7,13 @@
 #include "generated_plugin_registrant.h"
 
 #include <file_selector_linux/file_selector_plugin.h>
+#include <url_launcher_linux/url_launcher_plugin.h>
 
 void fl_register_plugins(FlPluginRegistry* registry) {
   g_autoptr(FlPluginRegistrar) file_selector_linux_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "FileSelectorPlugin");
   file_selector_plugin_register_with_registrar(file_selector_linux_registrar);
+  g_autoptr(FlPluginRegistrar) url_launcher_linux_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "UrlLauncherPlugin");
+  url_launcher_plugin_register_with_registrar(url_launcher_linux_registrar);
 }

linux/flutter/generated_plugins.cmake

@@ -4,6 +4,7 @@
 
 list(APPEND FLUTTER_PLUGIN_LIST
   file_selector_linux
+  url_launcher_linux
 )
 
 list(APPEND FLUTTER_FFI_PLUGIN_LIST

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -7,10 +7,14 @@ import Foundation
 
 import file_picker
 import file_selector_macos
+import path_provider_foundation
+import share_plus
 import shared_preferences_foundation
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   FilePickerPlugin.register(with: registry.registrar(forPlugin: "FilePickerPlugin"))
   FileSelectorPlugin.register(with: registry.registrar(forPlugin: "FileSelectorPlugin"))
+  PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
+  SharePlusMacosPlugin.register(with: registry.registrar(forPlugin: "SharePlusMacosPlugin"))
   SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
 }

pubspec.lock

@@ -661,6 +661,30 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.1.0"
+  path_provider:
+    dependency: "direct main"
+    description:
+      name: path_provider
+      sha256: "50c5dd5b6e1aaf6fb3a78b33f6aa3afca52bf903a8a5298f53101fdaee55bbcd"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.5"
+  path_provider_android:
+    dependency: transitive
+    description:
+      name: path_provider_android
+      sha256: "3b4c1fc3aa55ddc9cd4aa6759984330d5c8e66aa7702a6223c61540dc6380c37"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.2.19"
+  path_provider_foundation:
+    dependency: transitive
+    description:
+      name: path_provider_foundation
+      sha256: "16eef174aacb07e09c351502740fa6254c165757638eba1e9116b0a781201bbd"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.4.2"
   path_provider_linux:
     dependency: transitive
     description:
@@ -749,6 +773,22 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.5.0"
+  share_plus:
+    dependency: "direct main"
+    description:
+      name: share_plus
+      sha256: d7dc0630a923883c6328ca31b89aa682bacbf2f8304162d29f7c6aaff03a27a1
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "11.1.0"
+  share_plus_platform_interface:
+    dependency: transitive
+    description:
+      name: share_plus_platform_interface
+      sha256: "88023e53a13429bd65d8e85e11a9b484f49d4c190abbd96c7932b74d6927cc9a"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "6.1.0"
   shared_preferences:
     dependency: "direct main"
     description:
@@ -978,6 +1018,46 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.4.0"
+  url_launcher_linux:
+    dependency: transitive
+    description:
+      name: url_launcher_linux
+      sha256: "4e9ba368772369e3e08f231d2301b4ef72b9ff87c31192ef471b380ef29a4935"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.2.1"
+  url_launcher_platform_interface:
+    dependency: transitive
+    description:
+      name: url_launcher_platform_interface
+      sha256: "552f8a1e663569be95a8190206a38187b531910283c3e982193e4f2733f01029"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.3.2"
+  url_launcher_web:
+    dependency: transitive
+    description:
+      name: url_launcher_web
+      sha256: "4bd2b7b4dc4d4d0b94e5babfffbca8eac1a126c7f3d6ecbc1a11013faa3abba2"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.4.1"
+  url_launcher_windows:
+    dependency: transitive
+    description:
+      name: url_launcher_windows
+      sha256: "3284b6d2ac454cf34f114e1d3319866fdd1e19cdc329999057e44ffe936cfa77"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.1.4"
+  uuid:
+    dependency: transitive
+    description:
+      name: uuid
+      sha256: a11b666489b1954e01d992f3d601b1804a33937b5a8fe677bd26b8a9f96f96e8
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "4.5.2"
   vector_math:
     dependency: transitive
     description:

pubspec.yaml

@@ -55,6 +55,8 @@ dependencies:
   minio: ^3.5.8
   crypto: ^3.0.7
   file_picker: ^10.3.3
+  share_plus: ^11.0.0
+  path_provider: ^2.1.5
 
 dependency_overrides:
   tdesign_flutter_adaptation: 3.16.0

windows/flutter/generated_plugin_registrant.cc

@@ -7,8 +7,14 @@
 #include "generated_plugin_registrant.h"
 
 #include <file_selector_windows/file_selector_windows.h>
+#include <share_plus/share_plus_windows_plugin_c_api.h>
+#include <url_launcher_windows/url_launcher_windows.h>
 
 void RegisterPlugins(flutter::PluginRegistry* registry) {
   FileSelectorWindowsRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("FileSelectorWindows"));
+  SharePlusWindowsPluginCApiRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("SharePlusWindowsPluginCApi"));
+  UrlLauncherWindowsRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("UrlLauncherWindows"));
 }

windows/flutter/generated_plugins.cmake

@@ -4,6 +4,8 @@
 
 list(APPEND FLUTTER_PLUGIN_LIST
   file_selector_windows
+  share_plus
+  url_launcher_windows
 )
 
 list(APPEND FLUTTER_FFI_PLUGIN_LIST