canvas-image-cropper v1.0.0

canvas-image-cropper

JavaScript image cropper based on canvas

安装

npm install canvas-image-cropper

使用

<div id="container"></div>

var canvasImageCropper = new CanvasImageCropper({
    canvasWidth: 500,
    canvasHeight: 500,
    maskStyle: 'rgba(0, 0, 0, .6)',
    clipWidth: 200,
    clipHeight: 200
});
canvasImageCropper.render(document.getElementById('container'), './foo.jpg');

参数说明

canvasWidth  -- canvas 的大小 图片绘制宽度不会超过这个值
canvasHeight  -- canvas 的大小 图片绘制高度不会超过这个值
maskStyle  -- 遮罩样式
clipWidth  -- 裁剪像素大小
clipHeight  -- 裁剪像素大小

API

1. 获取裁剪坐标

canvasImageCropper.getClipPosition()

{ x: 0, y: 0, width: 200, height: 200 }

2. 获取裁剪区 base64 数据

canvasImageCropper.getPreview()