/*
 * @Author: GuLiMmo 2820890765@qq.com
 * @Date: 2024-05-21 10:14:11
 * @LastEditors: GuLiMmo 2820890765@qq.com
 * @LastEditTime: 2024-05-21 10:20:34
 * @FilePath: /bigScreen/src/utils/cesium/compressImage2.js
 * @Description:
 * Copyright (c) 2024 by GuLiMmo, All Rights Reserved.
 */
export default function compressImage(
	src,
	maxWidth,
	maxHeight,
	outputFormat = 'image/jpeg',
	quality = 0.7
) {
	return new Promise((resolve, reject) => {
		const image = new Image()
		image.setAttribute('crossOrigin', 'Anonymous')
		image.src = src
		image.onload = () => {
			let width = image.width
			let height = image.height

			if (width > maxWidth) {
				height *= maxWidth / width
				width = maxWidth
			}

			if (height > maxHeight) {
				width *= maxHeight / height
				height = maxHeight
			}

			const canvas = document.createElement('canvas')
			canvas.width = width
			canvas.height = height
			const ctx = canvas.getContext('2d')
			ctx.drawImage(image, 0, 0, width, height)

			const newDataUrl = canvas.toDataURL(outputFormat, quality)
			resolve(newDataUrl)
		}
		image.onerror = reject
	})
}