72 lines
1.8 KiB
Dart
72 lines
1.8 KiB
Dart
import 'dart:io';
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import 'dart:ui' as ui;
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import 'package:image/image.dart' as image;
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import 'package:crop_image/crop_image.dart';
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import 'package:flutter/material.dart';
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class DesktopCropper extends StatefulWidget {
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final String? title;
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final double? aspectRatio;
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final String file;
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const DesktopCropper({
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Key? key,
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this.title,
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this.aspectRatio,
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required this.file,
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}) : super(key: key);
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@override
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State<StatefulWidget> createState() => _DesktopCropperState();
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}
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class _DesktopCropperState extends State<DesktopCropper> {
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late final _controller = CropController(
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aspectRatio: widget.aspectRatio,
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);
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@override
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void dispose() {
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_controller.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: Text(widget.title ?? "图片裁剪"),
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actions: [
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IconButton(onPressed: _finish, icon: const Icon(Icons.done)),
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],
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),
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body: Center(
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child: Padding(
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padding: const EdgeInsets.all(12.0),
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child: CropImage(
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controller: _controller,
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image: Image.file(File(widget.file)),
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),
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),
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),
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);
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}
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Future _finish() async {
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var cropped = await _controller.croppedBitmap();
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var data = await cropped.toByteData(format: ui.ImageByteFormat.png);
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if (data != null) {
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var u8list = data.buffer.asUint8List();
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image.Image? baseSizeImage = image.decodePng(u8list);
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if (baseSizeImage != null) {
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if (cropped.width > 200) {
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baseSizeImage =
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image.copyResize(baseSizeImage, height: 200, width: 200);
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}
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var f = image.encodeJpg(baseSizeImage);
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Navigator.of(context).pop(f);
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}
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}
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}
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}
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