/*
 * @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;
    });
}