head_image_cropper 3.1.0 icon indicating copy to clipboard operation
head_image_cropper: ^3.1.0 copied to clipboard

A picture cutting part of flutter, which supports square picture and round picture preview. Suitable for fixed size image clipping. Such as cutting the head

使用 基于canvas撸的一个 Flutter头像裁剪控件

  • TODO:单指移动,双指移动、缩放、旋转
  • TODO:左键移动
  • TODO:滚轮旋转
  • TODO:左键+滚轮缩放

输入图片说明 输入图片说明

属性 backBoxSize 背景方格大小 默认值:10

backBoxColor0 背景方格颜色0 默认值:Colors.grey

backBoxColor1  背景方格颜色1 默认值:Colors.white

outWidth 输出图片宽度 默认值:256

outHeight 输出图片高度 默认值:256

maskColor 蒙板颜色 默认值:#00000080

maskPadding 蒙板内边距 默认值:20

lineWidth 预览框线宽 默认值:3

lineColor 预览框颜色 默认值:Colors.white

isArc 是否是圆形 默认值:true

round 预览框圆色 默认值:8

limitations 限制位置和尺寸 默认值:false

image 输入图片源

方法

outImage() 返回裁剪后的图片

使用 在pubspec.yaml文件中添加

dependencies:
  head_image_cropper: ^3.0.0

样例:

import 'dart:io';
import 'dart:typed_data';
import 'dart:ui';

import 'package:flutter/material.dart';
import 'package:head_image_cropper/head_image_cropper.dart';

void main() => runApp(MyApp());

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Home(),
    );
  }
}

class Home extends StatefulWidget {
  @override
  _HomeState createState() => _HomeState();
}

class _HomeState extends State<Home> {
  var _controller = CropperController();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        actions: <Widget>[
          FlatButton(
            child: Text("保存"),
            onPressed: () {
              _controller.outImage()?.then((image) async {
                //保存或上传代码
                var bytes =
                    (await (image.toByteData(format: ImageByteFormat.png)))
                        .buffer
                        .asUint8List();

                Navigator.of(context)
                    .push(MaterialPageRoute(builder: (context) {
                  return ShowImage(
                    data: bytes,
                  );
                }));
//                  File("path").writeAsBytesSync(bytes);
              });
            },
          )
        ],
      ),
      body: Container(
        padding: EdgeInsets.all(50),
        child: CropperImage(
          AssetImage("images/test.webp"),
          controller: _controller,
        ),
      ),
    );
  }
}

class ShowImage extends StatefulWidget {
  final Uint8List data;

  const ShowImage({Key key, this.data}) : super(key: key);

  @override
  _ShowImageState createState() => _ShowImageState();
}

class _ShowImageState extends State<ShowImage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("裁剪效果"),
      ),
      body: Image.memory(widget.data),
    );
  }
}

7
likes
120
pub points
78%
popularity

Publisher

unverified uploader

A picture cutting part of flutter, which supports square picture and round picture preview. Suitable for fixed size image clipping. Such as cutting the head

Homepage

Documentation

API reference

License

Icon for licenses.BSD-3-Clause (LICENSE)

Dependencies

flutter, flutter_web_plugins

More

Packages that depend on head_image_cropper