location2025/lib/utils/capture_util.dart

import 'dart:typed_data';
import 'dart:ui' as ui;

import 'package:flutter/cupertino.dart';
import 'package:flutter/rendering.dart';

class CaptureUtil {
  CaptureUtil._();

  static Future<Uint8List?> captureWidgetToImage(GlobalKey key,
      {double pixelRatio = 2.5}) async {
    try {
      RenderRepaintBoundary boundary =
          key.currentContext!.findRenderObject() as RenderRepaintBoundary;

      final ui.Image image = await boundary.toImage(pixelRatio: pixelRatio);
      final byteData = await image.toByteData(format: ui.ImageByteFormat.png);
      return byteData?.buffer.asUint8List();
    } catch (e) {
      debugPrint("截图失败: $e");
      return null;
    }
  }
}