18comic漫画下载 - Githubissues

图片分割的算法换了,我把图片分割合并的算法改了完美运行

 const download = async url => {
        const img = new Image;
        img.src = URL.createObjectURL((await new Promise((resolve, reject) => GM.xmlHttpRequest({
            url,
            method: 'GET',
            responseType: 'blob',
            onload: resolve,
            onerror: reject
        }))).response);
        await new Promise((resolve, reject) => (img.onload = resolve, img.onerror = reject));
        const canvas = document.createElement('canvas');
        const ctx = canvas.getContext('2d');
        const w = canvas.width = img.naturalWidth;
        const h = canvas.height = img.naturalHeight;
        // aid & scramble_id are both global variables
        if (!url.includes('.jpg') || aid < scramble_id) {
            ctx.drawImage(img, 0, 0);
        } else {
            var r = url.split("/")[6].split(".")[0];
            var s = get_num(aid, r);
            var l = parseInt(h % s);
            var o = w;
            for(var m=0;m<s;m++){
              var c = Math.floor(h / s);
              var g = c * m;
              var h1 = h - c * (m + 1) - l;
              0 == m ? c += l : g += l;
              ctx.drawImage(img, 0, h1, o, c, 0, g, o, c) 
            }

        }
        URL.revokeObjectURL(img.src);
        // TODO: Select image type? Change quality?
        return new Promise(resolve => canvas.toBlob(resolve, 'image/webp', 0.9));
    };

eternalphane / UserScripts

18comic漫画下载 #9