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