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Save books to jpg by direct download or by copying to canvas!
// ==UserScript==
// @name Tukang Download Google Books Preview
// @namespace https://github.com/beritaprofit/tukang-e-book/edit/master/tukang-e-book.user.js
// @version 0.3.0.3
// @description Save books to jpg by direct download or by copying to canvas!
// @author beritaprofit
// @license https://creativecommons.org/licenses/by-sa/4.0/
// @homepage https://github.com/beritaprofit/tukang-e-book
// @supportURL https://github.com/beritaprofit/tukang-e-book/issues
// @contributionURL https://github.com/beritaprofit/tukang-e-book#donate
// @include https://books.google.*
// @include https://www.google.com/books/*
// @include https://books.google.*/books
// @require http://greasyfork.icu/scripts/48306-waitforkeyelements/code/waitForKeyElements.js?version=275769
// @require http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js
// @require http://greasyfork.icu/scripts/381230-filesaver-min-js/code/FileSaverminjs.js?version=685345
// @grant GM_xmlhttpRequest
// @grant GM_log
// ==/UserScript==
this.$ = this.jQuery = jQuery.noConflict(true);
//from google Book downloader foxyspeed
Array.prototype.inArray = function (value,begin) {
begin = (begin)?begin:0;
for (var i=begin; i < this.length; i++) {
if (this[i] === value) {
return i;
}
}
return -1;
};
function uniq(a) {
return a.sort().filter(function(item, pos, ary) {
return !pos || item != ary[pos - 1];
})
}
function pad(n, width, z) {
z = z || '0';
n = n + '';
return n.length >= width ? n : new Array(width - n.length + 1).join(z) + n;
}
function addStyleSheet(style){
var getHead = document.getElementsByTagName("HEAD")[0];
var cssNode = window.document.createElement( 'style' );
var elementStyle= getHead.appendChild(cssNode);
elementStyle.innerHTML = style;
return elementStyle;
}
addStyleSheet('@import "https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css";');
var items = [];
var dllinks;
var i =0;
var percentage
var number;
var num;
var imgBlob;
var srclinks = new Map();
function generateDownloadButton (jNode) {
//jNode.attr ("src").match (/\d+/g);
console.log(jNode.attr ("src"));
//image = document.getElementById('foo')
var pids= new URL(jNode.attr ("src")).searchParams.get("pg");
console.log(pids);
if (pids!=null) {
var pidsnum= pids;
pidsnum.replace( /\D+/g, '');
//var string_a = "jkjkhj89898";
var numstring = pidsnum.match(/[^\d]+|\d+/g);
var name = "Canvas " +numstring[0]+ pad(numstring[1], 4);
var button2 = document.createElement("Button");
button2.innerHTML = '<i class="fa fa-file-image-o"></i>';
button2.setAttribute ('id', name);
button2.value = jNode.attr ("src");
//+ "background-color: DodgerBlue; border: none; color: white; padding: 12px 16px; font-size: 16px; cursor: pointer; "
//button2.style = "position: absolute;top: 50%;left: 50%;transform: translate(-50%, -50%);-ms-transform: translate(-50%, -50%);background-color: #555;color: white;font-size: 16px;padding: 12px 24px;border: none;cursor: pointer;border-radius: 5px;z-index: 9999"
button2.style = "position: absolute;top: 0%;left: 2px;transform: translate(2%, 2%);-ms-transform: translate(2%, 2%);z-index: 9999;"
+ "background-color: RoyalBlue; border: none; color: white; padding: 16px 16px; font-size: 16px; cursor: pointer";
jNode.after(button2);
button2.addEventListener( 'click', function () {
//alert("Hi"+name+this.value );
var imgs = document.getElementsByTagName('img');
for (var i = imgs.length - 1; i >= 0; i--) {
if (imgs[i].src == this.value) {
//var textNode = document.createElement('b');
//imgBlob = base64img(imgs[i]);
//alert(imgBlob);
//saveImage(base64imgraw(imgs[i]))
//saveAs(imgBlob, "hello world.png");
saveAs(b64toFile(base64img(imgs[i])), name+".jpg") ;
}}
}, true );
var button3 = document.createElement("Button");
name = numstring[0]+ pad(numstring[1], 4);
button3.innerHTML = '<i class="fa fa-download"></i>';
//button3.innerHTML = numstring[0]+ pad(numstring[1], 4);;
button3.setAttribute ('id', name);
button3.value = jNode.attr ("src");
//button3.style = "position: absolute;top: 0%;left: 100%;transform: translate(-102%, 2%);-ms-transform: translate(-102%, 2%);background-color: #555;color: white;font-size: 16px;padding: 12px 24px;border: none;cursor: pointer;border-radius: 5px;z-index: 9999"
button3.style = "position: absolute;top: 0%;left: 100%;transform: translate(-102%, 2%);-ms-transform: translate(-102%, 2%);z-index: 9999;"
+ "background-color: RoyalBlue; border: none; color: white; padding: 16px 16px; font-size: 16px; cursor: pointer";
button2.after(button3);
button3.addEventListener( 'click', function () {
saveAs(this.value, name+".jpg");
}, true );
if (items.inArray(jNode.attr ("src")) == -1) {
items.push(jNode.attr ("src"));
}
}
var imgId = jNode.attr("id");
//button.innerHTML =jNode.attr ("src");
dllinks=jNode.attr ("src");
//add(jNode.attr ("src"));
}
waitForKeyElements ("img[src*='content']", generateDownloadButton);
function scalePreserveAspectRatio(imgW,imgH,maxW,maxH){
return(Math.min((maxW/imgW),(maxH/imgH)));
}
function base64img(i){
var canvas = document.createElement('canvas');
canvas.width = i.width;
canvas.height = i.height;
var context = canvas.getContext("2d");
context.mozImageSmoothingEnabled = false;
context.imageSmoothingEnabled = false;
context.webkitImageSmoothingEnabled = false;
context.drawImage(i, 0, 0,canvas.width, canvas.height);
//var blob = canvas.toDataURL("image/png");
var blob = canvas.toDataURL("image/jpg");
return blob.replace(/^data:image\/(png|jpg);base64,/, "");
}
function base64imgraw(i){
var canvas = document.createElement('canvas');
canvas.width = i.width;
canvas.height = i.height;
var context = canvas.getContext("2d");
context.mozImageSmoothingEnabled = false;
context.imageSmoothingEnabled = false;
context.webkitImageSmoothingEnabled = false;
context.drawImage(i, 0, 0,canvas.width, canvas.height);
//context.drawImage(i, 0, 0,canvas.width, canvas.height);
//var blob = canvas.toDataURL("image/png");
var blob = canvas.toDataURL("image/jpg");
return blob;
}
function b64toFile(b64Data, filename, contentType) {
var sliceSize = 512;
var byteCharacters = atob(b64Data);
var byteArrays = [];
for (var offset = 0; offset < byteCharacters.length; offset += sliceSize) {
var slice = byteCharacters.slice(offset, offset + sliceSize);
var byteNumbers = new Array(slice.length);
for (var i = 0; i < slice.length; i++) {
byteNumbers[i] = slice.charCodeAt(i);
}
var byteArray = new Uint8Array(byteNumbers);
byteArrays.push(byteArray);
}
var file = new File(byteArrays, filename, {type: contentType});
return file;
}
//console.log('sukses');
//alert("hello");