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Slideshare Slide Downloader (images)
// ==UserScript==
// @name Slideshare Downloader
// @namespace Slideshare Slide Downloader
// @version 0.4
// @description Slideshare Slide Downloader (images)
// @author Hosamn Based on DownloadBoxy By QQBoxy
// @match https://www.slideshare.net/*
// @grant none
// ==/UserScript==
function getHighestResImg(element) {
if (element.getAttribute("srcset")) {
return element
.getAttribute("srcset")
.split(",")
.reduce(
(acc, item) => {
let [url, width] = item.trim().split(" ");
width = parseInt(width);
if (width > acc.width) return { width, url };
return acc;
},
{ width: 0, url: "" }
).url;
}
return element.getAttribute("src");
}
function slideshareboxy() {
var e = document.getElementById('slide-container').getElementsByTagName('source');
var o = "";
var a ;
for(var key=0; key<e.length; key+=1) {
if(e[key].attributes.srcset) {
var url = getHighestResImg(e[key])
a = document.createElement("a");
a.target = url;
a.href = url;
a.download = key;
a.click();
// let picBlob = new Blob(url, {type: 'text/html'});
// tar??.gz
// https://stackoverflow.com/questions/49736214/force-a-download-to-download-image-instead-of-opening-url-link-to-image
}
}
}
function downloadboxy() {
var btn = document.createElement("button");
btn.onclick = function() {
slideshareboxy();
};
btn.innerHTML = ">> Download Images <<";
btn.style.textDecoration = "underline"
document.getElementsByClassName('player-toolbar-item')[0].appendChild(btn);
}
function waitForElementToDisplay(selector, callback, checkFrequencyInMs, timeoutInMs) {
var startTimeInMs = Date.now();
(function loopSearch() {
if (document.querySelector(selector) != null) {
callback();
return;
}
else {
setTimeout(function () {
if (timeoutInMs && Date.now() - startTimeInMs > timeoutInMs) {
return;
loopSearch();
}
}, checkFrequencyInMs);
}
})();
}
waitForElementToDisplay("#player-toolbar", downloadboxy, 100,10000);