image-cropper

    "usingComponents": {
       "image-cropper": "../image-cropper/image-cropper"
    },
    "navigationBarTitleText": "裁剪图片",
    "disableScroll": true

<image-cropper id="image-cropper" limit_move="{{true}}" disable_rotate="{{true}}" width="{{width}}" height="{{height}}" imgSrc="{{src}}" bindload="cropperload" bindimageload="loadimage" bindtapcut="clickcut"></image-cropper>

    Page({
        data: {
            src:'',
            width:250,//宽度
            height: 250,//高度
        },
        onLoad: function (options) {
	    //获取到image-cropper实例
            this.cropper = this.selectComponent("#image-cropper");
            //开始裁剪
            this.setData({
                src:"https://raw.githubusercontent.com/1977474741/image-cropper/dev/image/code.jpg",
            });
            wx.showLoading({
                title: '加载中'
            })
        },
        cropperload(e){
            console.log("cropper初始化完成");
        },
        loadimage(e){
            console.log("图片加载完成",e.detail);
            wx.hideLoading();
            //重置图片角度、缩放、位置
            this.cropper.imgReset();
        },
        clickcut(e) {
            console.log(e.detail);
            //点击裁剪框阅览图片
            wx.previewImage({
                current: e.detail.url, // 当前显示图片的http链接
                urls: [e.detail.url] // 需要预览的图片http链接列表
            })
        },
    })