I'm trying to download an image from a WebPage, which is returned by a JavaScript (using html2canvas) immediately after calling it. Therefore I'm using the library HTMLUnit, but I haven't been successful until now.
Unfortunately only a faulty png-File is downloaded, which has around 140kb. It can't be opened by Windows (e.g. paint or preview).
Code-Snippet for my HTML-Page (executed immediately after div-element #div is loaded:
function saveMap() {
var element = $("#div");
html2canvas(element, {
useCORS: true,
onrendered: function(canvas) {
var dataUrl= canvas.toDataURL("image/png");
var a = $("<a>")
.attr("href", dataUrl)
.attr("download", "test.png")
.appendTo("body");
a[0].click();
a.remove();
}
});
}
Java-Code trying to download the returned png-File:
WebClient webClient = new WebClient(BrowserVersion.CHROME);
try {
HtmlPage page1 = webClient.getPage( new URI("file:///D:/path/to/page/sample.html").toURL() );
webClient.waitForBackgroundJavaScript(5000);
InputStream is = page1.getWebResponse().getContentAsStream();
File f = new File("test.png");
OutputStream os = new FileOutputStream(f);
byte[] bytes = new byte[2048];
int b = 0;
while ((b = is.read()) != -1)
{
os.write(bytes, 0, b);
}
os.close();
is.close();
} catch (FailingHttpStatusCodeException | IOException | URISyntaxException e) {
e.printStackTrace();
}
Full HTML-Page:
<!DOCTYPE html>
<html>
<head>
<style>
html, body, #div {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px
}
</style>
<script src="html2canvas.js"></script>
<script type="text/javascript" src="jquery-3.2.1.min.js"></script>
</head>
<body>
<div id="div"></div>
<script>
// Some init stuff for div and after completion the following:
saveMap();
function saveMap() {
var element = $("#div");
html2canvas(element, {
useCORS: true,
onrendered: function(canvas) {
var dataUrl= canvas.toDataURL("image/png");
var a = $("<a>")
.attr("href", dataUrl)
.attr("download", "test.png")
.appendTo("body");
a[0].click();
a.remove();
}
});
}
</script>
</body>
</html>
Thanks for the code. Have already done some tests with the samples available on the html2canvas web page. There is bug in the current version of HtmlUnit that stops the javascript from working.
I think i have done a fix also, but sourceforge is down at the moment. If they are back i will commit the fix and prepare a new snapshot. Will inform you and also have a look at your sample.
BTW: Do not expect nice screenshots from this. HtmlUnit is a headless browser and most of the layout functions are doing only a basic job. But you are welcome to provide better implementations.
Your code works (with some fixes) with the latest snapshot.
But to get reasonable results you have to provide a width and height for the result. I guess there is some layouting in HtmlUnit that returns otherwise 1x1 as result size. If this is a problem for you might have a look inside the code and try to point to the problematic place.
html2canvas(element, {
useCORS: true,
width: 300,
height: 300,
onrendered: function(canvas) {
Now to your java code
HtmlPage page1 = webClient.getPage( new URI("file:///D:/path/to/page/sample.html").toURL() );
webClient.waitForBackgroundJavaScript(5000);
The tricky part here is the async execution of the rendering inside your browser. From HtmlUnit point of view the browsers will, after the loading of the page was done, replace the content of the current window with the png image. Andd you have to deal with this in your code. Because there is a replace your page1 is still the old page returned (sync).
After the wait you have to reget the current content to have the png in hands
Page image = webClient.getCurrentWindow().getEnclosedPage();
InputStream is = image.getWebResponse().getContentAsStream();
And finally there is a small issue with your image writing code
Instead of
while ((b = is.read()) != -1)
you have to write
while ((b = is.read(bytes)) != -1)
Otherwise you will end up with a file of null bytes.
Hope that helps.
Related
I am building a chrome extension using Javascript which gets URLs of the opened tabs and saves the html file, but the problem with html is that it does not render images on webpages fully. So i changed my code to loop each URLs of the tabs and then save each html pages as image file automatically in one click on the download icon of the chrome extension. I have been researching for more than 2 days but nothing happened. Please see my code files and guide me. I know there is library in nodejs but i want to perform html to jpeg/png maker using chrome extension only.
Only icons i have not attached which i have used in this extension, all code i have and the text in popup.js which is commented i have tried.
Current output of the attached code
Updated popup.js
File popup.js - This file has functions which gets all the URLs of the opened tabs in the browser window
// script for popup.html
window.onload = () => {
// var html2obj = html2canvas(document.body);
// var queue = html2obj.parse();
// var canvas = html2obj.render(queue);
// var img = canvas.toDataURL("image/png");
let btn = document.querySelector("#btnDL");
btn.innerHTML = "Download";
function display(){
// alert('Click button is pressed')
window.open("image/url");
}
btn.addEventListener('click', display);
}
chrome.windows.getAll({populate:true}, getAllOpenWindows);
function getAllOpenWindows(winData) {
var tabs = [];
for (var i in winData) {
if (winData[i].focused === true) {
var winTabs = winData[i].tabs;
var totTabs = winTabs.length;
console.log("Number of opened tabs: "+ totTabs);
for (var j=0; j<totTabs;j++) {
tabs.push(winTabs[j].url);
// Get the HTML string in the tab_html_string
tab_html_string = get_html_string(winTabs[j].url)
// get the HTML document of each tab
tab_document = get_html_document(tab_html_string)
console.log(tab_document)
let canvasref = document.querySelector("#capture");
canvasref.appendChild(tab_document.body);
html2canvas(document.querySelector("#capture")).then(canvasref => {
document.body.appendChild(canvasref)
var img = canvasref.toDataURL("image/png");
window.open(img)
});
}
}
}
console.log(tabs);
}
function get_html_document(tab_html_string){
/**
* Convert a template string into HTML DOM nodes
*/
var parser = new DOMParser();
var doc = parser.parseFromString(tab_html_string, 'text/html');
return doc;
}
function get_html_string(URL_string){
/**
* Convert a URL into HTML string
*/
let xhr = new XMLHttpRequest();
xhr.open('GET', URL_string, false);
try {
xhr.send();
if (xhr.status != 200) {
alert(`Error ${xhr.status}: ${xhr.statusText}`);
} else {
return xhr.response
}
} catch(err) {
// instead of onerror
alert("Request failed");
}
}
File popup.html - This file represent icon and click functionality on the chrome browser search bar
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<!-- <meta name="viewport" content="width=device-width, initial-scale=1.0"> -->
<script src= './html2canvas.min.js'></script>
<script src= './jquery.min.js'></script>
<script src='./popup.js'></script>
<title>Capture extension</title>
<!--
- JavaScript and HTML must be in separate files: see our Content Security
- Policy documentation[1] for details and explanation.
-
- [1]: http://developer.chrome.com/extensions/contentSecurityPolicy.html
-->
</head>
<body>
<button id="btnDL"></button>
</body>
</html>
File manifest.json - This file is used by the chrome browser to execute the chrome extension
{
"manifest_version": 2,
"name": "CIP screen capture",
"description": "One-click download for files from open tabs",
"version": "1.4.0.2",
"browser_action": {
"default_popup": "popup.html"
},
"permissions": [
"downloads", "tabs", "<all_urls>"
],
"options_page": "options.html"
}
You can use the library html2canvas which renders any html element, particularly the body element, and from the resulted canvas you can have your image
<script type="text/javascript" src="https://github.com/niklasvh/html2canvas/releases/download/v1.0.0-rc.7/html2canvas.min.js"></script>
<script>
html2canvas(document.body).then(
(canvas) => {
var img = canvas.toDataURL("image/png");
}
);
</script>
You can get html2canvas from any public CDN, like this one. You don't need nodeJS. Or perhaps directly from the original git repo
<script type="text/javascript" src="https://github.com/niklasvh/html2canvas/releases/download/v1.0.0-rc.7/html2canvas.min.js"></script>
You can also save canvas as a blob
html2canvas(document.body).then(function(canvas) {
// Export canvas as a blob
canvas.toBlob(function(blob) {
// Generate file download
window.saveAs(blob, "yourwebsite_screenshot.png");
});
});
It's possible with vanilla JS, I guess vanilla is more likely to be used on a extension, the drawback is the end result, when a 3rd party library my already fixed the issues you will encounter with fonts and style (html2canvas or whatever).
So, vanilla js, for some reason stack overflow snippet does not permit window.open, demo here: https://jsfiddle.net/j67nqsme/
Few words on how it was implemented:
using html to svg transformation, a 3rd party library can be used here
using canvas to transform svg into pdg or jpg
example can export html or page to svg, png, jpg
it is not bullet proof - rendering can suffer, style, fonts, ratios, media query
Disclaimer: I won't help you debug or find solution of your problem, it is an answer to your question using vanilla js, from there on is your decision what you are using or how you are using it.
Source code bellow:
<html>
<body>
<script>
function export1() {
const html = '<div style="color:red">this is <br> sparta </div>';
renderHtmlToImage(html, 800, 600, "image/png");
}
function export2() {
renderDocumentToImage(window.document, 800, 600, "image/png");
}
// format is: image/jpeg, image/png, image/svg+xml
function exportImage(base64data, width, height, format) {
var img = new Image();
img.onload = function () {
if ("image/svg+xml" == format) {
var w = window.open("");
w.document.write(img.outerHTML);
w.document.close();
}
else {
const canvas = document.createElement("Canvas");
canvas.width = width;
canvas.height = height;
const ctx = canvas.getContext('2d');
ctx.fillStyle = "white";
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.drawImage(img, 0, 0);
var exportImage = new Image();
exportImage.onload = function () {
var w = window.open("");
w.document.write(exportImage.outerHTML);
w.document.close();
}
exportImage.src = canvas.toDataURL(format);
}
}
img.src = base64data;
}
// format is: image/jpeg, image/png, image/svg+xml
function renderHtmlToImage(html, width, height, format) {
var svgData = '<svg xmlns="http://www.w3.org/2000/svg" width="' + width + '" height="' + height + '">'
+ '<foreignObject width="100%" height="100%">'
+ html2SvgXml(html)
+ '</foreignObject>'
+ '</svg>';
var base64data = "data:image/svg+xml;base64," + btoa(svgData);
exportImage(base64data, width, height, format);
}
function renderDocumentToImage(doc, width, height, format) {
var svgData = '<svg xmlns="http://www.w3.org/2000/svg" width="' + width + '" height="' + height + '">'
+ '<foreignObject width="100%" height="100%">'
+ document2SvgXml(doc)
+ '</foreignObject>'
+ '</svg>';
var base64data = "data:image/svg+xml;base64," + btoa(svgData);
exportImage(base64data, width, height, format);
}
// plain html to svgXml
function html2SvgXml(html) {
var htmlDoc = document.implementation.createHTMLDocument('');
htmlDoc.write(html);
// process document
return document2SvgXml(htmlDoc);
}
// htmlDocument to
function document2SvgXml(htmlDoc) {
// Set the xmlns namespace
htmlDoc.documentElement.setAttribute('xmlns', htmlDoc.documentElement.namespaceURI);
// Get XML
var svcXml = (new XMLSerializer()).serializeToString(htmlDoc.body);
return svcXml;
}
</script>
<div>
<h3 style="color:blue">My Title</h3>
<div style="color:red">
My Text
</div>
<button onclick="export1()">Export Plain Html</button>
<button onclick="export2()">Export Entire Document</button>
</div>
</body>
</html>
There are 3 ways this could be approached:
Render this in client javascript using an API like HTML2Canvas. It's isolated, runs in the browser, but relies on a re-render that could get details of the captured page wrong (see most issues with H2C). That might be fine if you just want a small preview and don't mind the odd difference. Also be careful as the render is slow and somewhat heavyweight - background renders of large pages may be noticeable by users, but so will waits for the images to render.
Use a service that runs Chrome to visit the page and then screenshot it. You could write this or buy in a service like Site-Shot to do it for you. This requires a service which will have a cost, but can guarantee the render is accurate and ensures the load on the users' machines is minimal.
Use the Chrome tab capture API to screenshot the tab. This is probably the best option for an extension, but currently you can only capture the current active tab. captureOffscreenTab is coming soon, but currently only in Canary behind a flag.
I'd recommend option 3, as by the time you have finished the component you could have access to the new features. If you need to release soon you could use 1 or 2 as a short term solution.
OK so I am aware of the traditional HTML5 ways of saving a canvas img as a png, however my project is a DroidScript app and window location doesn't work and there is no server side to post process the img on a server and download it.
My question is how would one get the img to save using the DroidScript api probably using app.WriteFile.
I've tried generating the img with var img = app.CreateImage and then saving it with img.Save but the img isn't successfully generated, I've also tried converting it to a blob using canvas.toBlob and using app.WriteFile but the png is broken... same with canvas.toDataURL as well.
Both conversions fail with app.WriteFile and app.CreateFile which are the only solutions that seem to actually save the file at all. I've also tried using JavaScript's FileReader to do the conversions with no success...
I believe I am simply doing the order of operations incorrectly or using the wrong properties.
I don't have all of the versions of code that I've tried but here is the latest version that is generating a broken png.
app.toImage = function(){
var reader = new FileReader();
reader.onload = function readSuccess(e) {
var img = e.target.result;
var file = app.CreateFile('/sdcard/Download/t.png', "rw");
uint8ArrayNew = new Uint8Array(img);
file.WriteData(uint8ArrayNew, "Bytes");
file.Close();
};
win.canvas.toBlob(function(b) {
reader.readAsDataURL(b);
});
}
}
EDIT... this code saves the base64 data url inside of the file as a string which can be validated to show the correct image, however the file still appears as broken in a file browser
app.toImage = function(){
var img = win.canvas.toDataURL("image/png;base64;");
var reader = new FileReader();
reader.addEventListener("load", function (e) {
// preview.src = reader.result;
app.WriteFile('/sdcard/Download/t.png', reader.result);
}, false);
win.canvas.toBlob(function(b) {
reader.readAsDataURL(b);
});
}
}
This is the file contents
data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAABQAAAALQCAYAAADPfd1WAAAgAElEQVR4Xu3dT6ilh1nA4e/WNs3CJDUwpqGZMZI/IE1V7EKnWBslhWqlKEIioZW6aLoIWBCpUF248E8JLttFsqmUOpBSqohVoYXGdpGEKrQ2UWgamHQiaZwQOjNa0lZzvd+5+W7undyZe8/Nouf8vudCmclkSM/7vO/qx3fO2djc+hn8ECBAgAABAgQIECBAgAABAgQIECCQFNgQAJN7NRQBAgQIECBAgAABAgQIECBAgACBhcCBAfDGYxuLv3j6rAcF3QwBAgQIECBAgAABAgQIECBAgACBdRO4ZACcwt+H/+DuxUz3/eUpIXDdtuv1EiBAgAABAgQIECBAgAABAgQIzF7gFQHw4vD3m+/76PD8M18drr3+ZxdYJ3/mhBA4+7MBQIAAAQIECBAgQIAAAQIECBAgsC4CewLgGP+mJ/7eccdv70S/cZgxAo4/QuC6rNbrJECAAAECBAgQIECAAAECBAgQIHDRZwBOT/+NMA9/7VuviH5CoJMhQIAAAQIECBAgQIAAAQIECBAgsF4Cr3gC8O7fOLmY4NTfPrz4VQhcr4V6tQQIECBAgAABAgQIECBAgAABAgR2C+wbAG+79U07f+cj931GCHQzBAgQIECAAAECBAgQIECAAAECBNZUYN8AeOMNx4afuu7cYqQzF44tfj1MCJw+H3D8++OXhZw+u7mmLF42AQIECBAgQIAAAQIECBAgQIAAgYbAvgHwV996xfDs899bTHjdta8/dAgcvyjk3e96z46MANg4ElMQIECAAAECBAgQIECAAAECBAisr8C+AfDnfnJz+L+rHllM9SMXfuFQIXAKf5//0qPD2W8/Odx9592eAFzfu/DKCRAgQIAAAQIECBAgQIAAAQIEIgIHPgF42BA4hr/pRwCMXIcxCBAgQIAAAQIECBAgQIAAAQIE1l7gwM8AnN4KvF8I/I9nrxnOnb8wfPyTXxwEwLW/BQMQIECAAAECBAgQIECAAAECBAgEBS4ZAKdZpy8D2S8Ejp8P+MgTrxEAg4dhJAIECBAgQIAAAQIECBAgQIAAgYbAgQHwUiFwjH/7PQE4vv332BtvGt75Sz/vMwAbN2IKAgQIECBAgAABAgQIECBAgACBNRY4MAB+8DV3Dve/+OmdEacnAsf4N/5c/BZgAXCNr8FLJ0CAAAECBAgQIECAAAECBAgQyAlcNgCO8W/82R0ALxYQAHM3YSACBAgQIECAAAECBAgQIECAAIGQwIEB8MG7fmW46+krh/u//P6dsT/49r/a+WcBMHQNRiFAgAABAgQIECBAgAABAgQIEMgJXDIAjk//fewXbxmOven4cNfDZ4b7T//ZYvgx/j14wws7UVAAzN2EgQgQIECAAAECBAgQIECAAAECBEIC+wbAvzhx72LEMQCOP1MEHH//4Mnjiz+bngrcHQCnz/8b/70vAQldiVEIECBAgAABAgQIECBAgAABAgTWVuDAtwDvDoHTlIsg+NLbggXAtd29F06AAAECBAgQIECAAAECBAgQIDADgX0D4I9dfeVwzdVX7Yw/fRnIFAMFwBlchhEJECBAgAABAgQIECBAgAABAgQSAnsC4DjRjcc2FoPd+zu/vCcCjn+2CIEnbhk+duKltwVvPQV43+d+a/j4J784fP5Ljw7eApy4CUMQIECAAAECBAgQIECAAAECBAiEBF4RAKfZLhsCb/yjYTi+/fmAAmDoGoxCgAABAgQIECBAgAABAgQIECCQE7hkADxUCNz6RuApAJ769Knh2Btv2gHyJSC5WzEQAQIECBAgQIAAAQIECBAgQIDAGgocGAAPCoHTl4AIgGu4fS+ZAAECBAgQIECAAAECBAgQIEAgL3DoALhfCJz+bPwMwCkAjk/+jT+nz27m8QxIgAABAgQIECBAgAABAgQIECBAYNUFlg6A+4XAMQBOP8Lfqq/c6yNAgAABAgQIECBAgAABAgQIEJiTwJED4MUhUPib09mYlQABAgQIECBAgAABAgQIECBAYF0EXnUAXJdBvU4CBAgQIECAAAECBAgQIECAAAECcxQQAOe4dTMTIECAAAECBAgQIECAAAECBAjMRkAAnM2qDUqAAAECBAgQIECAAAECBAgQIDBHAQFwjls3MwECBAgQIECAAAECBAgQIECAwGwEBMDZrNqgBAgQIECAAAECBAgQIECAAAECcxQQAOe4dTMTIECAAAECBAgQIECAAAECBAjMRkAAnM2qDUqAAAECBAgQIECAAAECBAgQIDBHgSMFwHvu2NjX6oEvbM7R0MwECBAgQIAAAQIECBAgQIAAAQIEVlZgqQD4d3+4Hf6+/sT+8zx1fvvPhcCV3bcXRoAAAQIECBAgQIAAAQIECBAgMDOBQwfAMf69+N1L65z5n2E4/53tfz+GQBFwZpdkXAIECBAgQIAAAQIECBAgQIAAgZUUOFQA3B3/3vChYfjGuWE499zL89zy99u/HyPg+DOGQBFwJfftRREgQIAAAQIECBAgQIAAAQIECMxM4MAAOMW/MfyNP8+fHYbnrtirNMbAs08Pw9u+KgLO7H6MS4AAAQIECBAgQIAAAQIECBAgsOIClw2Au+PfGP5+/eSZ4dTjxxcj/cntW/97aHu677+w/USgCLji2/byCBAgQIAAAQIECBAgQIAAAQIEZidwYAC8+gPD8P6TL8e+SWh3AJyC4L2f2hsBvRV4dvdkYAIECBAgQIAAAQIECBAgQIAAgRUTuGQA3P3039tuPjPceuz4zhN/F88wxcDxScBvbr0N2FuBV2zLXg4BAgQIECBAgAABAgQIECBAgMBsBS4bAMen/y5+6+9tb95r9djje/95fBvw7rcCewpwtrdlcAIECBAgQIAAAQIECBAgQIAAgRUQOFQAPH/19isd49/1wx/vednPDH867I6AFz8FKACuwJa9BAIECBAgQIAAAQIECBAgQIAAgdkKHBgAT3/vZZspAF413L74wwvDQ8MUAMe3AY8/H/mnvW8DFgBne1sGJ0CAAAECBAgQIECAAAECBAgQWAGBAwPg+AUg48/4jb+XC4DTLJ4AXIGtegkECBAgQIAAAQIECBAgQIAAAQIEXhI4MACOnwG4zFuA//2R7f/y9EUgngB0awQIECBAgAABAgQIECBAgAABAgR+eAKXDIDjSxq/CXj8IpDpbcDj23w/sxUEd/+Mn/93qW8BFv9+eIv1/0yAAAECBAgQIECAAAECBAgQIEBgFDhUAByfAvz992y/DfhSP2MEvPOj2//W03+OiwABAgQIECBAgAABAgQIECBAgMBqCFw2AI4vcXoKcPdbgcc/n576G38/fe6f+LcaS/UqCBAgQIAAAQIECBAgQIAAAQIECEwCBwbA3RFw/P0YAp+7Yhj+/F0vf+Pv9B/z5J/DIkCAAAECBAgQIECAAAECBAgQILBaAocKgFMEfPG7w/CGDw3DV57cHuLs09u/juFv/Hn8P7d/fer8MDzwhc3VmtSrIUCAAAECBAgQIECAAAECBAgQIDBDgUMHwNFmfDvwM9/eegLwwv5SY/gbf8S/GV6SkQkQIECAAAECBAgQIECAAAECBFZSYKkAOE1wzx0b+w4j/K3kjr0oAgQIECBAgAABAgQIECBAgACBGQscKQDO2MvoBAgQIECAAAECBAgQIECAAAECBNZKQABcq3V5sQQIECBAgAABAgQIECBAgAABAgSWExAAl/PytwkQIECAAAECBAgQIECAAAECBAislYAAuFbr8mIJECBAgAABAgQIECBAgAABAgQILCcgAC7n5W8TIECAAAECBAgQIECAAAECBAgQWCsBAXCt1uXFEiBAgAABAgQIECBAgAABAgQIEFhOQABczsvfJkCAAAECBAgQIECAAAECBAgQILBWAgLgWq3LiyVAgAABAgQIECBAgAABAgQIECCwnIAAuJyXv02AAAECBAgQIECAAAECBAgQIEBgrQSOFACfeWEYrr9yreb0YgkQIECAAAECBAgQIECAAAECBAjMUuBIAXCS+sZ/D8OtPzpLN0MTIECAAAECBAgQIECAAAECBAgQWAuBVxUA12JCL5IAAQIECBAgQIAAAQIECBAgQIDAjAUEwBkv3+gECBAgQIAAAQIECBAgQIAAAQJ9gSMFQJ8B2D8MExIgQIAAAQIECBAgQIAAAQIECDQEjhQAG6ObggABAgQIECBAgAABAgQIECBAgEBf4MgB8J//9fHhHW99c1/IhAQIECBAgAABAgQIECBAgAABAgTWWGDpACj8rfG2vXQCBAgQIECAAAECBAgQIECAAIHZCSwdAEehjY2NBdRD//KYpwBndzIGJkCAAAECBAgQIECAAAECBAgQWCeBpQLgFP6++eyFxYw3X3fV4tfNzc11mtlrJUCAAAECBAgQIECAAAECBAgQIDAbgUMHwDH+feIrLwxvP/GD4ekzTy2Abjj+E8M//Nu54ffeeYMIOJuTMSgBAgQIECBAgAABAgQIECBAgMA6CSwVAMcn/778rdcNF77z3M6Mv/bT1yyeBPQU4Dqt3WslQIAAAQIECBAgQIAAAQIECBCYi8ChA+AI4i3AczkLcxIgQIAAAQIECBAgQIAAAQIECFQElg6ADzz5/eGem67Ynv93PzUMn3ivp/8q12AOAgQIECBAgAABAgQIECBAgACBnMDSAfDDD28ON//4D4Z/fOJ1w988+NcCYO4kDESAAAECBAgQIECAAAECBAgQIFASOFIAfPS/huHa1w/DZ+94bNh47Vs8AVi6CLMQIECAAAECBAgQIECAAAECBAikBF5VAPQEYOoWDEOAAAECBAgQIECAAAECBAgQIBAUWDoAbv7v14fbP3fb4glAATB4EUYiQIAAAQIECBAgQIAAAQIECBBICSwdAMfPAJzeAiwApm7BMAQIECBAgAABAgQIECBAgAABAkGBIwfAh9699fl/H/iaLwEJHoWRCBAgQIAAAQIECBAgQIAAAQIEOgJHDoDeAtw5ApMQIECAAAECBAgQIECAAAECBAh0BZYOgD4DsHsMJiNAgAABAgQIECBAgAABAgQIEOgJLB0AfQZg7whMRIAAAQIECBAgQIAAAQIECBAg0BU4UgB84tw2iC8B6R6GyQgQIECAAAECBAgQIECAAAECBBoCRwqA4+hjBPzsHVtfBPLatwybm5sNDVMQIECAAAECBAgQIECAAAECBAgQiAksHQDH+cfPAZy+AXjxzwJg7CyMQ4AAAQIECBAgQIAAAQIECBAgUBFYKgCOQ29sbOyZXfyrnII5CBAgQIAAAQIECBAgQIAAAQIEigJLB8AigpkIECBAgAABAgQIECBAgAABAgQIVAUEwOpmzUWAAAECBAgQIECAAAECBAgQIEBgS0AAdAYECBAgQIAAAQIECBAgQIAAAQIEwgICYHi5RiNAgAABAgQIECBAgAABAgQIECAgALoBAgQIECBAgAABAgQIECBAgAABAmEBATC8XKMRIECAAAECBAgQIECAAAECBAgQEADdAAECBAgQIECAAAECBAgQIECAAIGwgAAYXq7RCBAgQIAAAQIECBAgQIAAAQIECAiAboAAAQIECBAgQIAAAQIECBAgQIBAWEAADC/XaAQIECBAgAABAgQIECBAgAABAgQEQDdAgAABAgQIECBAgAABAgQIECBAICwgAIaXazQCBAgQIECAAAECBAgQIECAAAECAqAbIECAAAECBAgQIECAAAECBAgQIBAWEADDyzUaAQIECBAgQIAAAQIECBAgQIAAAQHQDRAgQIAAAQIECBAgQIAAAQIECBAICwiA4eUajQABAgQIECBAgAABAgQIECBAgIAA6AYIECBAgAABAgQIECBAgAABAgQIhAUEwPByjUaAAAECBAgQIECAAAECBAgQIEBAAHQDBAgQIECAAAECBAgQIECAAAECBMICAmB4uUYjQIAAAQIECBAgQIAAAQIECBAgIAC6AQIECBAgQIAAAQIECBAgQIAAAQJhAQEwvFyjESBAgAABAgQIECBAgAABAgQIEBAA3QABAgQIECBAgAABAgQIECBAgACBsIAAGF6u0QgQIECAAAECBAgQIECAAAECBAgIgG6AAAECBAgQIECAAAECBAgQIECAQFhAAAwv12gECBAgQIAAAQIECBAgQIAAAQIEBEA3QIAAAQIECBAgQIAAAQIECBAgQCAsIACGl2s0AgQIECBAgAABAgQIECBAgAABAgKgGyBAgAABAgQIECBAgAABAgQIECAQFhAAw8s1GgECBAgQIECAAAECBAgQIECAAAEB0A0QIECAAAECBAgQIECAAAECBAgQCAsIgOHlGo0AAQIECBAgQIAAAQIECBAgQICAAOgGCBAgQIAAAQIECBAgQIAAAQIECIQFBMDwco1GgAABAgQIECBAgAABAgQIECBAQAB0AwQIECBAgAABAgQIECBAgAABAgTCAgJgeLlGI0CAAAECBAgQIECAAAECBAgQICAAugECBAgQIECAAAECBAgQIECAAAECYQEBMLxcoxEgQIAAAQIECBAgQIAAAQIECBAQAN0AAQIECBAgQIAAAQIECBAgQIAAgbCAABhertEIECBAgAABAgQIECBAgAABAgQICIBugAABAgQIECBAgAABAgQIECBAgEBYQAAML9doBAgQIECAAAECBAgQIECAAAECBARAN0CAAAECBAgQIECAAAECBAgQIEAgLCAAhpdrNAIECBAgQIAAAQIECBAgQIAAAQICoBsgQIAAAQIECBAgQIAAAQIECBAgEBYQAMPLNRoBAgQIECBAgAABAgQIECBAgAABAdANECBAgAABAgQIECBAgAABAgQIEAgLCIDh5RqNAAECBAgQIECAAAECBAgQIECAgADoBggQIECAAAECBAgQIECAAAECBAiEBQTA8HKNRoAAAQIECBAgQIAAAQIECBAgQEAAdAMECBAgQIAAAQIECBAgQIAAAQIEwgICYHi5RiNAgAABAgQIECBAgAABAgQIECAgALoBAgQIECBAgAABAgQIECBAgAABAmEBATC8XKMRIECAAAECBAgQIECAAAECBAgQEADdAAECBAgQIECAAAECBAgQIECAAIGwgAAYXq7RCBAgQIAAAQIECBAgQIAAAQIECAiAboAAAQIECBAgQIAAAQIECBAgQIBAWEAADC/XaAQIECBAgAABAgQIECBAgAABAgQEQDdAgAABAgQIECBAgAABAgQIECBAICwgAIaXazQCBAgQIECAAAECBAgQIECAAAECAqAbIECAAAECBAgQIECAAAECBAgQIBAWEADDyzUaAQIECBAgQIAAAQIECBAgQIAAAQHQDRAgQIAAAQIECBAgQIAAAQIECBAICwiA4eUajQABAgQIECBAgAABAgQIECBAgIAA6AYIECBAgAABAgQIECBAgAABAgQIhAUEwPByjUaAAAECBAgQIECAAAECBAgQIEBAAHQDBAgQIECAAAECBAgQIECAAAECBMICAmB4uUYjQIAAAQIECBAgQIAAAQIECBAgIAC6AQIECBAgQIAAAQIECBAgQIAAAQJhAQEwvFyjESBAgAABAgQIECBAgAABAgQIEBAA3QABAgQIECBAgAABAgQIECBAgACBsIAAGF6u0QgQIECAAAECBAgQIECAAAECBAgIgG6AAAECBAgQIECAAAECBAgQIECAQFhAAAwv12gECBAgQIAAAQIECBAgQIAAAQIEBEA3QIAAAQIECBAgQIAAAQIECBAgQCAsIACGl2s0AgQIECBAgAABAgQIECBAgAABAgKgGyBAgAABAgQIECBAgAABAgQIECAQFhAAw8s1GgECBAgQIECAAAECBAgQIECAAAEB0A0QIECAAAECBAgQIECAAAECBAgQCAsIgOHlGo0AAQIECBAgQIAAAQIECBAgQICAAOgGCBAgQIAAAQIECBAgQIAAAQIECIQFBMDwco1GgAABAgQIECBAgAABAgQIECBAQAB0AwQIECBAgAABAgQIECBAgAABAgTCAgJgeLlGI0CAAAECBAgQIECAAAECBAgQICAAugECBAgQIECAAAECBAgQIECAAAECYQEBMLxcoxEgQIAAAQIECBAgQIAAAQIECBAQAN0AAQIECBAgQIAAAQIECBAgQIAAgbCAABhertEIECBAgAABAgQIECBAgAABAgQICIBugAABAgQIECBAgAABAgQIECBAgEBYQAAML9doBAgQIECAAAECBAgQIECAAAECBARAN0CAAAECBAgQIECAAAECBAgQIEAgLCAAhpdrNAIECBAgQIAAAQIECBAgQIAAAQICoBsgQIAAAQIECBAgQIAAAQIECBAgEBYQAMPLNRoBAgQIECBAgAABAgQIECBAgAABAdANECBAgAABAgQIECBAgAABAgQIEAgLCIDh5RqNAAECBAgQIECAAAECBAgQIECAgADoBggQIECAAAECBAgQIECAAAECBAiEBQTA8HKNRoAAAQIECBAgQIAAAQIECBAgQEAAdAMECBAgQIAAAQIECBAgQIAAAQIEwgICYHi5RiNAgAABAgQIECBAgAABAgQIECAgALoBAgQIECBAgAABAgQIECBAgAABAmEBATC8XKMRIECAAAECBAgQIECAAAECBAgQEADdAAECBAgQIECAAAECBAgQIECAAIGwgAAYXq7RCBAgQIAAAQIECBAgQIAAAQIECAiAboAAAQIECBAgQIAAAQIECBAgQIBAWEAADC/XaAQIECBAgAABAgQIECBAgAABAgQEQDdAgAABAgQIECBAgAABAgQIECBAICwgAIaXazQCBAgQIECAAAECBAgQIECAAAECAqAbIECAAAECBAgQIECAAAECBAgQIBAWEADDyzUaAQIECBAgQIAAAQIECBAgQIAAAQHQDRAgQIAAAQIECBAgQIAAAQIECBAICwiA4eUajQABAgQIECBAgAABAgQIECBAgIAA6AYIECBAgAABAgQIECBAgAABAgQIhAUEwPByjUaAAAECBAgQIECAAAECBAgQIEBAAHQDBAgQIECAAAECBAgQIECAAAECBMICAmB4uUYjQIAAAQIECBAgQIAAAQIECBAgIAC6AQIECBAgQIAAAQIECBAgQIAAAQJhAQEwvFyjESBAgAABAgQIECBAgAABAgQIEBAA3QABAgQIECBAgAABAgQIECBAgACBsIAAGF6u0QgQIECAAAECBAgQIECAAAECBAgIgG6AAAECBAgQIECAAAECBAgQIECAQFhAAAwv12gECBAgQIAAAQIECBAgQIAAAQIEBEA3QIAAAQIECBAgQIAAAQIECBAgQCAsIACGl2s0AgQIECBAgAABAgQIECBAgAABAgKgGyBAgAABAgQIECBAgAABAgQIECAQFhAAw8s1GgECBAgQIECAAAECBAgQIECAAAEB0A0QIECAAAECBAgQIECAAAECBAgQCAsIgOHlGo0AAQIECBAgQIAAAQIECBAgQICAAOgGCBAgQIAAAQIECBAgQIAAAQIECIQFBMDwco1GgAABAgQIECBAgAABAgQIECBAQAB0AwQIECBAgAABAgQIECBAgAABAgTCAgJgeLlGI0CAAAECBAgQIECAAAECBAgQICAAugECBAgQIECAAAECBAgQIECAAAECYQEBMLxcoxEgQIAAAQIECBAgQIAAAQIECBAQAN0AAQIECBAgQIAAAQIECBAgQIAAgbCAABhertEIECBAgAABAgQIECBAgAABAgQICIBugAABAgQIECBAgAABAgQIECBAgEBYQAAML9doBAgQIECAAAECBAgQIECAAAECBARAN0CAAAECBAgQIECAAAECBAgQIEAgLCAAhpdrNAIECBAgQIAAAQIECBAgQIAAAQICoBsgQIAAAQIECBAgQIAAAQIECBAgEBYQAMPLNRoBAgQIECBAgAABAgQIECBAgAABAdANECBAgAABAgQIECBAgAABAgQIEAgLCIDh5RqNAAECBAgQIECAAAECBAgQIECAgADoBggQIECAAAECBAgQIECAAAECBAiEBQTA8HKNRoAAAQIECBAgQIAAAQIECBAgQEAAdAMECBAgQIAAAQIECBAgQIAAAQIEwgICYHi5RiNAgAABAgQIECBAgAABAgQIECAgALoBAgQIECBAgAABAgQIECBAgAABAmEBATC8XKMRIECAAAECBAgQIECAAAECBAgQEADdAAECBAgQIECAAAECBAgQIECAAIGwgAAYXq7RCBAgQIAAAQIECBAgQIAAAQIECAiAboAAAQIECBAgQIAAAQIECBAgQIBAWEAADC/XaAQIECBAgAABAgQIECBAgAABAgQEQDdAgAABAgQIECBAgAABAgQIECBAICwgAIaXazQCBAgQIECAAAECBAgQIECAAAECAqAbIECAAAECBAgQIECAAAECBAgQIBAWEADDyzUaAQIECBAgQIAAAQIECBAgQIAAAQHQDRAgQIAAAQIECBAgQIAAAQIECBAICwiA4eUajQABAgQIECBAgAABAgQIECBAgIAA6AYIECBAgAABAgQIECBAgAABAgQIhAUEwPByjUaAAAECBAgQIECAAAECBAgQIEBAAHQDBAgQIECAAAECBAgQIECAAAECBMICAmB4uUYjQIAAAQIECBAgQIAAAQIECBAgIAC6AQIECBAgQIAAAQIECBAgQIAAAQJhAQEwvFyjESBAgAABAgQIECBAgAABAgQIEBAA3QABAgQIECBAgAABAgQIECBAgACBsIAAGF6u0QgQIECAAAECBAgQIECAAAECBAgIgG6AAAECBAgQIECAAAECBAgQIECAQFhAAAwv12gECBAgQIAAAQIECBAgQIAAAQIEBEA3QIAAAQIECBAgQIAAAQIECBAgQCAsIACGl2s0AgQIECBAgAABAgQIECBAgAABAgKgGyBAgAABAgQIECBAgAABAgQIECAQFqi+qawAACAASURBVBAAw8s1GgECBAgQIECAAAECBAgQIECAAAEB0A0QIECAAAECBAgQIECAAAECBAgQCAsIgOHlGo0AAQIECBAgQIAAAQIECBAgQICAAOgGCBAgQIAAAQIECBAgQIAAAQIECIQFBMDwco1GgAABAgQIECBAgAABAgQIECBAQAB0AwQIECBAgAABAgQIECBAgAABAgTCAgJgeLlGI0CAAAECBAgQIECAAAECBAgQICAAugECBAgQIECAAAECBAgQIECAAAECYQEBMLxcoxEgQIAAAQIECBAgQIAAAQIECBAQAN0AAQIECBAgQIAAAQIECBAgQIAAgbCAABhertEIECBAgAABAgQIECBAgAABAgQICIBugAABAgQIECBAgAABAgQIECBAgEBYQAAML9doBAgQIECAAAECBAgQIECAAAECBARAN0CAAAECBAgQIECAAAECBAgQIEAgLCAAhpdrNAIECBAgQIAAAQIECBAgQIAAAQICoBsgQIAAAQIECBAgQIAAAQIECBAgEBYQAMPLNRoBAgQIECBAgAABAgQIECBAgAABAdANECBAgAABAgQIECBAgAABAgQIEAgLCIDh5RqNAAECBAgQIECAAAECBAgQIECAgADoBggQIECAAAECBAgQIECAAAECBAiEBQTA8HKNRoAAAQIECBAgQIAAAQIECBAgQEAAdAMECBAgQIAAAQIECBAgQIAAAQIEwgICYHi5RiNAgAABAgQIECBAgAABAgQIECAgALoBAgQIECBAgAABAgQIECBAgAABAmEBATC8XKMRIECAAAECBAgQIECAAAECBAgQEADdAAECBAgQIECAAAECBAgQIECAAIGwgAAYXq7RCBAgQIAAAQIECBAgQIAAAQIECAiAboAAAQIECBAgQIAAAQIECBAgQIBAWEAADC/XaAQIECBAgAABAgQIECBAgAABAgQEQDdAgAABAgQIECBAgAABAgQIECBAICwgAIaXazQCBAgQIECAAAECBAgQIECAAAECAqAbIECAAAECBAgQIECAAAECBAgQIBAWEADDyzUaAQIECBAgQIAAAQIECBAgQIAAAQHQDRAgQIAAAQIECBAgQIAAAQIECBAICwiA4eUajQABAgQIECBAgAABAgQIECBAgIAA6AYIECBAgAABAgQIECBAgAABAgQIhAUEwPByjUaAAAECBAgQIECAAAECBAgQIEBAAHQDBAgQIECAAAECBAgQIECAAAECBMICAmB4uUYjQIAAAQIECBAgQIAAAQIECBAgIAC6AQIECBAgQIAAAQIECBAgQIAAAQJhAQEwvFyjESBAgAABAgQIECBAgAABAgQIEBAA3QABAgQIECBAgAABAgQIECBAgACBsIAAGF6u0QgQIECAAAECBAgQIECAAAECBAgIgG6AAAECBAgQIECAAAECBAgQIECAQFhAAAwv12gECBAgQIAAAQIECBAgQIAAAQIEBEA3QIAAAQIECBAgQIAAAQIECBAgQCAsIACGl2s0AgQIECBAgAABAgQIECBAgAABAgKgGyBAgAABAgQIECBAgAABAgQIECAQFhAAw8s1GgECBAgQIECAAAECBAgQIECAAAEB0A0QIECAAAECBAgQIECAAAECBAgQCAsIgOHlGo0AAQIECBAgQIAAAQIECBAgQICAAOgGCBAgQIAAAQIECBAgQIAAAQIECIQFBMDwco1GgAABAgQIECBAgAABAgQIECBAQAB0AwQIECBAgAABAgQIECBAgAABAgTCAgJgeLlGI0CAAAECBAgQIECAAAECBAgQICAAugECBAgQIECAAAECBAgQIECAAAECYQEBMLxcoxEgQIAAAQIECBAgQIAAAQIECBAQAN0AAQIECBAgQIAAAQIECBAgQIAAgbCAABhertEIECBAgAABAgQIECBAgAABAgQICIBugAABAgQIECBAgAABAgQIECBAgEBYQAAML9doBAgQIECAAAECBAgQIECAAAECBARAN0CAAAECBAgQIECAAAECBAgQIEAgLCAAhpdrNAIECBAgQIAAAQIECBAgQIAAAQICoBsgQIAAAQIECBAgQIAAAQIECBAgEBYQAMPLNRoBAgQIECBAgAABAgQIECBAgAABAdANECBAgAABAgQIECBAgAABAgQIEAgLCIDh5RqNAAECBAgQIECAAAECBAgQIECAgADoBggQIECAAAECBAgQIECAAAECBAiEBQTA8HKNRoAAAQIECBAgQIAAAQIECBAgQEAAdAMECBAgQIAAAQIECBAgQIAAAQIEwgICYHi5RiNAgAABAgQIECBAgAABAgQIECAgALoBAgQIECBAgAABAgQIECBAgAABAmEBATC8XKMRIECAAAECBAgQIECAAAECBAgQEADdAAECBAgQIECAAAECBAgQIECAAIGwgAAYXq7RCBAgQIAAAQIECBAgQIAAAQIECAiAboAAAQIECBAgQIAAAQIECBAgQIBAWEAADC/XaAQIECBAgAABAgQIECBAgAABAgQEQDdAgAABAgQIECBAgAABAgQIECBAICwgAIaXazQCBAgQIECAAAECBAgQIECAAAECAqAbIECAAAECBAgQIECAAAECBAgQIBAWEADDyzUaAQIECBAgQIAAAQIECBAgQIAAAQHQDRAgQIAAAQIECBAgQIAAAQIECBAICwiA4eUajQABAgQIECBAgAABAgQIECBAgIAA6AYIECBAgAABAgQIECBAgAABAgQIhAUEwPByjUaAAAECBAgQIECAAAECBAgQIEBAAHQDBAgQIECAAAECBAgQIECAAAECBMICAmB4uUYjQIAAAQIECBAgQIAAAQIECBAgIAC6AQIECBAgQIAAAQIECBAgQIAAAQJhAQEwvFyjESBAgAABAgQIECBAgAABAgQIEBAA3QABAgQIECBAgAABAgQIECBAgACBsIAAGF6u0QgQIECAAAECBAgQIECAAAECBAgIgG6AAAECBAgQIECAAAECBAgQIECAQFhAAAwv12gECBAgQIAAAQIECBAgQIAAAQIEBEA3QIAAAQIECBAgQIAAAQIECBAgQCAsIACGl2s0AgQIECBAgAABAgQIECBAgAABAgKgGyBAgAABAgQIECBAgAABAgQIECAQFhAAw8s1GgECBAgQIECAAAECBAgQIECAAAEB0A0QIECAAAECBAgQIECAAAECBAgQCAsIgOHlGo0AAQIECBAgQIAAAQIECBAgQICAAOgGCBAgQIAAAQIECBAgQIAAAQIECIQFBMDwco1GgAABAgQIECBAgAABAgQIECBAQAB0AwQIECBAgAABAgQIECBAgAABAgTCAgJgeLlGI0CAAAECBAgQIECAAAECBAgQICAAugECBAgQIECAAAECBAgQIECAAAECYQEBMLxcoxEgQIAAAQIECBAgQIAAAQIECBAQAN0AAQIECBAgQIAAAQIECBAgQIAAgbCAABhertEIECBAgAABAgQIECBAgAABAgQICIBugAABAgQIECBAgAABAgQIECBAgEBYQAAML9doBAgQIECAAAECBAgQIECAAAECBARAN0CAAAECBAgQIECAAAECBAgQIEAgLCAAhpdrNAIECBAgQIAAAQIECBAgQIAAAQICoBsgQIAAAQIECBAgQIAAAQIECBAgEBYQAMPLNRoBAgQIECBAgAABAgQIECBAgAABAdANECBAgAABAgQIECBAgAABAgQIEAgLCIDh5RqNAAECBAgQIECAAAECBAgQIECAgADoBggQIECAAAECBAgQIECAAAECBAiEBQTA8HKNRoAAAQIECBAgQIAAAQIECBAgQEAAdAMECBAgQIAAAQIECBAgQIAAAQIEwgICYHi5RiNAgAABAgQIECBAgAABAgQIECAgALoBAgQIECBAgAABAgQIECBAgAABAmEBATC8XKMRIECAAAECBAgQIECAAAECBAgQEADdAAECBAgQIECAAAECBAgQIECAAIGwgAAYXq7RCBAgQIAAAQIECBAgQIAAAQIECAiAboAAAQIECBAgQIAAAQIECBAgQIBAWEAADC/XaAQIECBAgAABAgQIECBAgAABAgQEQDdAgAABAgQIECBAgAABAgQIECBAICwgAIaXazQCBAgQIECAAAECBAgQIECAAAECAqAbIECAAAECBAgQIECAAAECBAgQIBAWEADDyzUaAQIECBAgQIAAAQIECBAgQIAAAQHQDRAgQIAAAQIECBAgQIAAAQIECBAICwiA4eUajQABAgQIECBAgAABAgQIECBAgIAA6AYIECBAgAABAgQIECBAgAABAgQIhAUEwPByjUaAAAECBAgQIECAAAECBAgQIEBAAHQDBAgQIECAAAECBAgQIECAAAECBMICAmB4uUYjQIAAAQIECBAgQIAAAQIECBAgIAC6AQIECBAgQIAAAQIECBAgQIAAAQJhAQEwvFyjESBAgAABAgQIECBAgAABAgQIEBAA3QABAgQIECBAgAABAgQIECBAgACBsIAAGF6u0QgQIECAAAECBAgQIECAAAECBAgIgG6AAAECBAgQIECAAAECBAgQIECAQFhAAAwv12gECBAgQIAAAQIECBAgQIAAAQIEBEA3QIAAAQIECBAgQIAAAQIECBAgQCAsIACGl2s0AgQIECBAgAABAgQIECBAgAABAgKgGyBAgAABAgQIECBAgAABAgQIECAQFhAAw8s1GgECBAgQIECAAAECBAgQIECAAAEB0A0QIECAAAECBAgQIECAAAECBAgQCAsIgOHlGo0AAQIECBAgQIAAAQIECBAgQICAAOgGCBAgQIAAAQIECBAgQIAAAQIECIQFBMDwco1GgAABAgQIECBAgAABAgQIECBAQAB0AwQIECBAgAABAgQIECBAgAABAgTCAgJgeLlGI0CAAAECBAgQIECAAAECBAgQICAAugECBAgQIECAAAECBAgQIECAAAECYQEBMLxcoxEgQIAAAQIECBAgQIAAAQIECBAQAN0AAQIECBAgQIAAAQIECBAgQIAAgbCAABhertEIECBAgAABAgQIECBAgAABAgQICIBugAABAgQIECBAgAABAgQIECBAgEBYQAAML9doBAgQIECAAAECBAgQIECAAAECBARAN0CAAAECBAgQIECAAAECBAgQIEAgLCAAhpdrNAIECBAgQIAAAQIECBAgQIAAAQICoBsgQIAAAQIECBAgQIAAAQIECBAgEBYQAMPLNRoBAgQIECBAgAABAgQIECBAgAABAdANECBAgAABAgQIECBAgAABAgQIEAgLCIDh5RqNAAECBAgQIECAAAECBAgQIECAgADoBggQIECAAAECBAgQIECAAAECBAiEBQTA8HKNRoAAAQIECBAgQIAAAQIECBAgQEAAdAMECBAgQIAAAQIECBAgQIAAAQIEwgICYHi5RiNAgAABAgQIECBAgAABAgQIECAgALoBAgQIECBAgAABAgQIECBAgAABAmEBATC8XKMRIECAAAECBAgQIECAAAECBAgQEADdAAECBAgQIECAAAECBAgQIECAAIGwgAAYXq7RCBAgQIAAAQIECBAgQIAAAQIECAiAboAAAQIECBAgQIAAAQIECBAgQIBAWEAADC/XaAQIECBAgAABAgQIECBAgAABAgQEQDdAgAABAgQIECBAgAABAgQIECBAICwgAIaXazQCBAgQIECAAAECBAgQIECAAAECAqAbIECAAAECBAgQIECAAAECBAgQIBAWEADDyzUaAQIECBAgQIAAAQIECBAgQIAAAQHQDRAgQIAAAQIECBAgQIAAAQIECBAICwiA4eUajQABAgQIECBAgAABAgQIECBAgIAA6AYIECBAgAABAgQIECBAgAABAgQIhAUEwPByjUaAAAECBAgQIECAAAECBAgQIEBAAHQDBAgQIECAAAECBAgQIECAAAECBMICAmB4uUYjQIAAAQIECBAgQIAAAQIECBAgIAC6AQIECBAgQIAAAQIECBAgQIAAAQJhAQEwvFyjESBAgAABAgQIECBAgAABAgQIEBAA3QABAgQIECBAgAABAgQIECBAgACBsIAAGF6u0QgQIECAAAECBAgQIECAAAECBAgIgG6AAAECBAgQIECAAAECBAgQIECAQFhAAAwv12gECBAgQIAAAQIECBAgQIAAAQIEBEA3QIAAAQIECBAgQIAAAQIECBAgQCAsIACGl2s0AgQIECBAgAABAgQIECBAgAABAgKgGyBAgAABAgQIECBAgAABAgQIECAQFhAAw8s1GgECBAgQIECAAAECBAgQIECAAAEB0A0QIECAAAECBAgQIECAAAECBAgQCAsIgOHlGo0AAQIECBAgQIAAAQIECBAgQICAAOgGCBAgQIAAAQIECBAgQIAAAQIECIQFBMDwco1GgAABAgQIECBAgAABAgQIECBAQAB0AwQIECBAgAABAgQIECBAgAABAgTCAgJgeLlGI0CAAAECBAgQIECAAAECBAgQICAAugECBAgQIECAAAECBAgQIECAAAECYQEBMLxcoxEgQIAAAQIECBAgQIAAAQIECBAQAN0AAQIECBAgQIAAAQIECBAgQIAAgbCAABhertEIECBAgAABAgQIECBAgAABAgQICIBugAABAgQIECBAgAABAgQIECBAgEBYQAAML9doBAgQIECAAAECBAgQIECAAAECBARAN0CAAAECBAgQIECAAAECBAgQIEAgLCAAhpdrNAIECBAgQIAAAQIECBAgQIAAAQICoBsgQIAAAQIECBAgQIAAAQIECBAgEBYQAMPLNRoBAgQIECBAgAABAgQIECBAgAABAdANECBAgAABAgQIECBAgAABAgQIEAgLCIDh5RqNAAECBAgQIECAAAECBAgQIECAgADoBggQIECAAAECBAgQIECAAAECBAiEBQTA8HKNRoAAAQIECBAgQIAAAQIECBAgQEAAdAMECBAgQIAAAQIECBAgQIAAAQIEwgICYHi5RiNAgAABAgQIECBAgAABAgQIECAgALoBAgQIECBAgAABAgQIECBAgAABAmEBATC8XKMRIECAAAECBAgQIECAAAECBAgQEADdAAECBAgQIECAAAECBAgQIECAAIGwgAAYXq7RCBAgQIAAAQIECBAgQIAAAQIECAiAboAAAQIECBAgQIAAAQIECBAgQIBAWEAADC/XaAQIECBAgAABAgQIECBAgAABAgQEQDdAgAABAgQIECBAgAABAgQIECBAICwgAIaXazQCBAgQIECAAAECBAgQIECAAAECAqAbIECAAAECBAgQIECAAAECBAgQIBAWEADDyzUaAQIECBAgQIAAAQIECBAgQIAAAQHQDRAgQIAAAQIECBAgQIAAAQIECBAICwiA4eUajQABAgQIECBAgAABAgQIECBAgIAA6AYIECBAgAABAgQIECBAgAABAgQIhAUEwPByjUaAAAECBAgQIECAAAECBAgQIEBAAHQDBAgQIECAAAECBAgQIECAAAECBMICAmB4uUYjQIAAAQIECBAgQIAAAQIECBAgIAC6AQIECBAgQIAAAQIECBAgQIAAAQJhAQEwvFyjESBAgAABAgQIECBAgAABAgQIEBAA3QABAgQIECBAgAABAgQIECBAgACBsIAAGF6u0QgQIECAAAECBAgQIECAAAECBAgIgG6AAAECBAgQIECAAAECBAgQIECAQFhAAAwv12gECBAgQIAAAQIECBAgQIAAAQIEBEA3QIAAAQIECBAgQIAAAQIECBAgQCAsIACGl2s0AgQIECBAgAABAgQIECBAgAABAgKgGyBAgAABAgQIECBAgAABAgQIECAQFhAAw8s1GgECBAgQIECAAAECBAgQIECAAAEB0A0QIECAAAECBAgQIECAAAECBAgQCAsIgOHlGo0AAQIECBAgQIAAAQIECBAgQICAAOgGCBAgQIAAAQIECBAgQIAAAQIECIQFBMDwco1GgAABAgQIECBAgAABAgQIECBAQAB0AwQIECBAgAABAgQIECBAgAABAgTCAgJgeLlGI0CAAAECBAgQIECAAAECBAgQICAAugECBAgQIECAAAECBAgQIECAAAECYQEBMLxcoxEgQIAAAQIECBAgQIAAAQIECBAQAN0AAQIECBAgQIAAAQIECBAgQIAAgbCAABhertEIECBAgAABAgQIECBAgAABAgQICIBugAABAgQIECBAgAABAgQIECBAgEBYQAAML9doBAgQIECAAAECBAgQIECAAAECBARAN0CAAAECBAgQIECAAAECBAgQIEAgLCAAhpdrNAIECBAgQIAAAQIECBAgQIAAAQICoBsgQIAAAQIECBAgQIAAAQIECBAgEBYQAMPLNRoBAgQIECBAgAABAgQIECBAgAABAdANECBAgAABAgQIECBAgAABAgQIEAgLCIDh5RqNAAECBAgQIECAAAECBAgQIECAgADoBggQIECAAAECBAgQIECAAAECBAiEBQTA8HKNRoAAAQIECBAgQIAAAQIECBAgQEAAdAMECBAgQIAAAQIECBAgQIAAAQIEwgICYHi5RiNAgAABAgQIECBAgAABAgQIECAgALoBAgQIECBAgAABAgQIECBAgAABAmEBATC8XKMRIECAAAECBAgQIECAAAECBAgQEADdAAECBAgQIECAAAECBAgQIECAAIGwgAAYXq7RCBAgQIAAAQIECBAgQIAAAQIECAiAboAAAQIECBAgQIAAAQIECBAgQIBAWEAADC/XaAQIECBAgAABAgQIECBAgAABAgQEQDdAgAABAgQIECBAgAABAgQIECBAICwgAIaXazQCBAgQIECAAAECBAgQIECAAAECAqAbIECAAAECBAgQIECAAAECBAgQIBAWEADDyzUaAQIECBAgQIAAAQIECBAgQIAAAQHQDRAgQIAAAQIECBAgQIAAAQIECBAICwiA4eUajQABAgQIECBAgAABAgQIECBAgIAA6AYIECBAgAABAgQIECBAgAABAgQIhAUEwPByjUaAAAECBAgQIECAAAECBAgQIEBAAHQDBAgQIECAAAECBAgQIECAAAECBMICAmB4uUYjQIAAAQIECBAgQIAAAQIECBAgIAC6AQIECBAgQIAAAQIECBAgQIAAAQJhAQEwvFyjESBAgAABAgQIECBAgAABAgQIEBAA3QABAgQIECBAgAABAgQIECBAgACBsIAAGF6u0QgQIECAAAECBAgQIECAAAECBAgIgG6AAAECBAgQIECAAAECBAgQIECAQFhAAAwv12gECBAgQIAAAQIECBAgQIAAAQIEBEA3QIAAAQIECBAgQIAAAQIECBAgQCAsIACGl2s0AgQIECBAgAABAgQIECBAgAABAgKgGyBAgAABAgQIECBAgAABAgQIECAQFhAAw8s1GgECBAgQIECAAAECBAgQIECAAAEB0A0QIECAAAECBAgQIECAAAECBAgQCAsIgOHlGo0AAQIECBAgQIAAAQIECBAgQICAAOgGCBAgQIAAAQIECBAgQIAAAQIECIQFBMDwco1GgAABAgQIECBAgAABAgQIECBAQAB0AwQIECBAgAABAgQIECBAgAABAgTCAgJgeLlGI0CAAAECBAgQIECAAAECBAgQICAAugECBAgQIECAAAECBAgQIECAAAECYQEBMLxcoxEgQIAAAQIECBAgQIAAAQIECBAQAN0AAQIECBAgQIAAAQIECBAgQIAAgbCAABhertEIECBAgAABAgQIECBAgAABAgQICIBugAABAgQIECBAgAABAgQIECBAgEBYQAAML9doBAgQIECAAAECBAgQIECAAAECBARAN0CAAAECBAgQIECAAAECBAgQIEAgLCAAhpdrNAIECBAgQIAAAQIECBAgQIAAAQICoBsgQIAAAQIECBAgQIAAAQIECBAgEBYQAMPLNRoBAgQIECBAgAABAgQIECBAgAABAdANECBAgAABAgQIECBAgAABAgQIEAgLCIDh5RqNAAECBAgQIECAAAECBAgQIECAgADoBggQIECAAAECBAgQIECAAAECBAiEBQTA8HKNRoAAAQIECBAgQIAAAQIECBAgQEAAdAMECBAgQIAAAQIECBAgQIAAAQIEwgICYHi5RiNAgAABAgQIECBAgAABAgQIECAgALoBAgQIECBAgAABAgQIECBAgAABAmEBATC8XKMRIECAAAECBAgQIECAAAECBAgQEADdAAECBAgQIECAAAECBAgQIECAAIGwgAAYXq7RCBAgQIAAAQIECBAgQIAAAQIECAiAboAAAQIECBAgQIAAAQIECBAgQIBAWEAADC/XaAQIECBAgAABAgQIECBAgAABAgQEQDdAgAABAgQIECBAgAABAgQIECBAICwgAIaXazQCBAgQIECAAAECBAgQIECAAAECAqAbIECAAAECBAgQIECAAAECBAgQIBAWEADDyzUaAQIECBAgQIAAAQIECBAgQIAAAQHQDRAgQIAAAQIECBAgQIAAAQIECBAICwiA4eUajQABAgQIECBAgAABAgQIECBAgIAA6AYIECBAgAABAgQIECBAgAABAgQIhAUEwPByjUaAAAECBAgQIECAAAECBAgQIEBAAHQDBAgQIECAAAECBAgQIECAAAECBMICAmB4uUYjQIAAAQIECBAgQIAAAQIECBAgIAC6AQIECBAgQIAAAQIECBAgQIAAAQJhAQEwvFyjESBAgAABAgQIECBAgAABAgQIEBAA3QABAgQIECBAgAABAgQIECBAgACBsIAAGF6u0QgQIECAAAECBAgQIECAAAECBAgIgG6AAAECBAgQIECAAAECBAgQIECAQFhAAAwv12gECBAgQIAAAQIECBAgQIAAAQIEBEA3QIAAAQIECBAgQIAAAQIECBAgQCAsIACGl2s0AgQIECBAgAABAgQIECBAgAABAgKgGyBAvcXANwAAC11JREFUgAABAgQIECBAgAABAgQIECAQFhAAw8s1GgECBAgQIECAAAECBAgQIECAAAEB0A0QIECAAAECBAgQIECAAAECBAgQCAsIgOHlGo0AAQIECBAgQIAAAQIECBAgQICAAOgGCBAgQIAAAQIECBAgQIAAAQIECIQFBMDwco1GgAABAgQIECBAgAABAgQIECBAQAB0AwQIECBAgAABAgQIECBAgAABAgTCAgJgeLlGI0CAAAECBAgQIECAAAECBAgQICAAugECBAgQIECAAAECBAgQIECAAAECYQEBMLxcoxEgQIAAAQIECBAgQIAAAQIECBAQAN0AAQIECBAgQIAAAQIECBAgQIAAgbCAABhertEIECBAgAABAgQIECBAgAABAgQICIBugAABAgQIECBAgAABAgQIECBAgEBYQAAML9doBAgQIECAAAECBAgQIECAAAECBARAN0CAAAECBAgQIECAAAECBAgQIEAgLCAAhpdrNAIECBAgQIAAAQIECBAgQIAAAQICoBsgQIAAAQIECBAgQIAAAQIECBAgEBYQAMPLNRoBAgQIECBAgAABAgQIECBAgAABAdANECBAgAABAgQIECBAgAABAgQIEAgLCIDh5RqNAAECBAgQIECAAAECBAgQIECAgADoBggQIECAAAECBAgQIECAAAECBAiEBQTA8HKNRoAAAQIECBAgQIAAAQIECBAgQEAAdAMECBAgQIAAAQIECBAgQIAAAQIEwgICYHi5RiNAgAABAgQIECBAgAABAgQIECAgALoBAgQIECBAgAABAgQIECBAgAABAmEBATC8XKMRIECAAAECBAgQIECAAAECBAgQEADdAAECBAgQIECAAAECBAgQIECAAIGwgAAYXq7RCBAgQIAAAQIECBAgQIAAAQIECAiAboAAAQIECBAgQIAAAQIECBAgQIBAWEAADC/XaAQIECBAgAABAgQIECBAgAABAgQEQDdAgAABAgQIECBAgAABAgQIECBAICwgAIaXazQCBAgQIECAAAECBAgQIECAAAECAqAbIECAAAECBAgQIECAAAECBAgQIBAWEADDyzUaAQIECBAgQIAAAQIECBAgQIAAAQHQDRAgQIAAAQIECBAgQIAAAQIECBAICwiA4eUajQABAgQIECBAgAABAgQIECBAgIAA6AYIECBAgAABAgQIECBAgAABAgQIhAUEwPByjUaAAAECBAgQIECAAAECBAgQIEBAAHQDBAgQIECAAAECBAgQIECAAAECBMICAmB4uUYjQIAAAQIECBAgQIAAAQIECBAgIAC6AQIECBAgQIAAAQIECBAgQIAAAQJhAQEwvFyjESBAgAABAgQIECBAgAABAgQIEBAA3QABAgQIECBAgAABAgQIECBAgACBsIAAGF6u0QgQIECAAAECBAgQIECAAAECBAgIgG6AAAECBAgQIECAAAECBAgQIECAQFhAAAwv12gECBAgQIAAAQIECBAgQIAAAQIEBEA3QIAAAQIECBAgQIAAAQIECBAgQCAsIACGl2s0AgQIECBAgAABAgQIECBAgAABAgKgGyBAgAABAgQIECBAgAABAgQIECAQFhAAw8s1GgECBAgQIECAAAECBAgQIECAAAEB0A0QIECAAAECBAgQIECAAAECBAgQCAsIgOHlGo0AAQIECBAgQIAAAQIECBAgQICAAOgGCBAgQIAAAQIECBAgQIAAAQIECIQFBMDwco1GgAABAgQIECBAgAABAgQIECBAQAB0AwQIECBAgAABAgQIECBAgAABAgTCAgJgeLlGI0CAAAECBAgQIECAAAECBAgQICAAugECBAgQIECAAAECBAgQIECAAAECYQEBMLxcoxEgQIAAAQIECBAgQIAAAQIECBAQAN0AAQIECBAgQIAAAQIECBAgQIAAgbCAABhertEIECBAgAABAgQIECBAgAABAgQICIBugAABAgQIECBAgAABAgQIECBAgEBYQAAML9doBAgQIECAAAECBAgQIECAAAECBARAN0CAAAECBAgQIECAAAECBAgQIEAgLCAAhpdrNAIECBAgQIAAAQIECBAgQIAAAQICoBsgQIAAAQIECBAgQIAAAQIECBAgEBYQAMPLNRoBAgQIECBAgAABAgQIECBAgAABAdANECBAgAABAgQIECBAgAABAgQIEAgLCIDh5RqNAAECBAgQIECAAAECBAgQIECAgADoBggQIECAAAECBAgQIECAAAECBAiEBQTA8HKNRoAAAQIECBAgQIAAAQIECBAgQEAAdAMECBAgQIAAAQIECBAgQIAAAQIEwgICYHi5RiNAgAABAgQIECBAgAABAgQIECAgALoBAgQIECBAgAABAgQIECBAgAABAmEBATC8XKMRIECAAAECBAgQIECAAAECBAgQEADdAAECBAgQIECAAAECBAgQIECAAIGwgAAYXq7RCBAgQIAAAQIECBAgQIAAAQIECAiAboAAAQIECBAgQIAAAQIECBAgQIBAWEAADC/XaAQIECBAgAABAgQIECBAgAABAgQEQDdAgAABAgQIECBAgAABAgQIECBAICwgAIaXazQCBAgQIECAAAECBAgQIECAAAECAqAbIECAAAECBAgQIECAAAECBAgQIBAWEADDyzUaAQIECBAgQIAAAQIECBAgQIAAAQHQDRAgQIAAAQIECBAgQIAAAQIECBAICwiA4eUajQABAgQIECBAgAABAgQIECBAgIAA6AYIECBAgAABAgQIECBAgAABAgQIhAUEwPByjUaAAAECBAgQIECAAAECBAgQIEBAAHQDBAgQIECAAAECBAgQIECAAAECBMICAmB4uUYjQIAAAQIECBAgQIAAAQIECBAgIAC6AQIECBAgQIAAAQIECBAgQIAAAQJhAQEwvFyjESBAgAABAgQIECBAgAABAgQIEBAA3QABAgQIECBAgAABAgQIECBAgACBsIAAGF6u0QgQIECAAAECBAgQIECAAAECBAgIgG6AAAECBAgQIECAAAECBAgQIECAQFhAAAwv12gECBAgQIAAAQIECBAgQIAAAQIEBEA3QIAAAQIECBAgQIAAAQIECBAgQCAsIACGl2s0AgQIECBAgAABAgQIECBAgAABAgKgGyBAgAABAgQIECBAgAABAgQIECAQFhAAw8s1GgECBAgQIECAAAECBAgQIECAAAEB0A0QIECAAAECBAgQIECAAAECBAgQCAsIgOHlGo0AAQIECBAgQIAAAQIECBAgQICAAOgGCBAgQIAAAQIECBAgQIAAAQIECIQFBMDwco1GgAABAgQIECBAgAABAgQIECBAQAB0AwQIECBAgAABAgQIECBAgAABAgTCAgJgeLlGI0CAAAECBAgQIECAAAECBAgQICAAugECBAgQIECAAAECBAgQIECAAAECYQEBMLxcoxEgQIAAAQIECBAgQIAAAQIECBAQAN0AAQIECBAgQIAAAQIECBAgQIAAgbCAABhertEIECBAgAABAgQIECBAgAABAgQICIBugAABAgQIECBAgAABAgQIECBAgEBYQAAML9doBAgQIECAAAECBAgQIECAAAECBARAN0CAAAECBAgQIECAAAECBAgQIEAgLCAAhpdrNAIECBAgQIAAAQIECBAgQIAAAQICoBsgQIAAAQIECBAgQIAAAQIECBAgEBYQAMPLNRoBAgQIECBAgAABAgQIECBAgAABAdANECBAgAABAgQIECBAgAABAgQIEAgLCIDh5RqNAAECBAgQIECAAAECBAgQIECAgADoBggQIECAAAECBAgQIECAAAECBAiEBQTA8HKNRoAAAQIECBAgQIAAAQIECBAgQEAAdAMECBAgQIAAAQIECBAgQIAAAQIEwgL/D4op7GOot1T8AAAAAElFTkSuQmCC
Paste into this tool and i get the correct image
http://codebeautify.org/base64-to-image-converter
How do i save it as an actual png
The DroidScript Image control allows you to set the pixel data using a base64 string, so you could send the data to a hidden or visible image control and then use the img.Save() method to save it as a jpeg or png.
This is the prototype for the img.SetPixelData method:-
SetPixelData( data, width, height, options )
It can handle with or without mime type header and you can leave out the width, height and options params if you like
There's a bit of hack to it, you have to use webview in order to view the base64 one, here's the sample code:
var temporaryFile = "/sdcard/temp.png";
//Called when application is started.
function OnStart()
{
//Create a layout with objects vertically centered.
lay = app.CreateLayout( "linear", "VCenter,FillXY" );
//Create a text label and add it to layout.
txt = app.CreateText( "Hello" );
txt.SetTextSize( 32 );
lay.AddChild( txt );
btn= app.CreateButton("Choose Image");
btn.SetOnTouch(function(){
app.ChooseImage("Internal", function(path){
var img2 = app.CreateImage(path);
var img2 = app.CreateImage(path);
var img = app.CreateImage(null, 0.3, 0.3);
img.DrawImage(img2,0,0,1,1);
img.Save(temporaryFile);
txt = app.ReadFile(temporaryFile,'base64');
var pixelData = 'data:image/png;base64,' + txt;
var converted = base64Image(pixelData, 0.3, 0.3);
lay.AddChild(app.CreateText("raw"));
lay.AddChild(img2);
lay.AddChild(app.CreateText("modified"));
lay.AddChild(img);
lay.AddChild(app.CreateText("base64 src"));
lay.AddChild(converted);
});
});
lay.AddChild( btn );
//Add layout to app.
app.AddLayout( lay );
}
function base64Image(src, w, h)
{
var web = app.CreateWebView(w,h);
var html = [
"<body style='margin:0px'>",
"<img src='"+src+"' width='100%' height='100%'/>",
"</body>"
].join('');
web.LoadHtml(html, "file:///Sys/");
return web;
}
It would be incredibly useful to be able to temporarily convert a regular element into a canvas. For example, say I have a styled div that I want to flip. I want to dynamically create a canvas, "render" the HTMLElement into the canvas, hide the original element and animate the canvas.
Can it be done?
There is a library that try to do what you say.
See this examples and get the code
http://hertzen.com/experiments/jsfeedback/
http://html2canvas.hertzen.com/
Reads the DOM, from the html and render it to a canvas, fail on some, but in general works.
Take a look at this tutorial on MDN: https://developer.mozilla.org/en/HTML/Canvas/Drawing_DOM_objects_into_a_canvas (archived)
Its key trick was:
var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');
var data = '<svg xmlns="http://www.w3.org/2000/svg" width="200" height="200">' +
'<foreignObject width="100%" height="100%">' +
'<div xmlns="http://www.w3.org/1999/xhtml" style="font-size:40px">' +
'<em>I</em> like ' +
'<span style="color:white; text-shadow:0 0 2px blue;">' +
'cheese</span>' +
'</div>' +
'</foreignObject>' +
'</svg>';
var DOMURL = window.URL || window.webkitURL || window;
var img = new Image();
var svg = new Blob([data], {type: 'image/svg+xml;charset=utf-8'});
var url = DOMURL.createObjectURL(svg);
img.onload = function () {
ctx.drawImage(img, 0, 0);
DOMURL.revokeObjectURL(url);
}
img.src = url;
That is, it used a temporary SVG image to include the HTML content as a "foreign element", then renders said SVG image into a canvas element. There are significant restrictions on what you can include in an SVG image in this way, however. (See the "Security" section for details — basically it's a lot more limited than an iframe or AJAX due to privacy and cross-domain concerns.)
Sorry, the browser won't render HTML into a canvas.
It would be a potential security risk if you could, as HTML can include content (in particular images and iframes) from third-party sites. If canvas could turn HTML content into an image and then you read the image data, you could potentially extract privileged content from other sites.
To get a canvas from HTML, you'd have to basically write your own HTML renderer from scratch using drawImage and fillText, which is a potentially huge task. There's one such attempt here but it's a bit dodgy and a long way from complete. (It even attempts to parse the HTML/CSS from scratch, which I think is crazy! It'd be easier to start from a real DOM node with styles applied, and read the styling using getComputedStyle and relative positions of parts of it using offsetTop et al.)
You can use dom-to-image library (I'm the maintainer).
Here's how you could approach your problem:
var parent = document.getElementById('my-node-parent');
var node = document.getElementById('my-node');
var canvas = document.createElement('canvas');
canvas.width = node.scrollWidth;
canvas.height = node.scrollHeight;
domtoimage.toPng(node).then(function (pngDataUrl) {
var img = new Image();
img.onload = function () {
var context = canvas.getContext('2d');
context.translate(canvas.width, 0);
context.scale(-1, 1);
context.drawImage(img, 0, 0);
parent.removeChild(node);
parent.appendChild(canvas);
};
img.src = pngDataUrl;
});
And here is jsfiddle
Building on top of the Mozdev post that natevw references I've started a small project to render HTML to canvas in Firefox, Chrome & Safari. So for example you can simply do:
rasterizeHTML.drawHTML('<span class="color: green">This is HTML</span>'
+ '<img src="local_img.png"/>', canvas);
Source code and a more extensive example is here.
No such thing, sorry.
Though the spec states:
A future version of the 2D context API may provide a way to render fragments of documents, rendered using CSS, straight to the canvas.
Which may be as close as you'll get.
A lot of people want a ctx.drawArbitraryHTML/Element kind of deal but there's nothing built in like that.
The only exception is Mozilla's exclusive drawWindow, which draws a snapshot of the contents of a DOM window into the canvas. This feature is only available for code running with Chrome ("local only") privileges. It is not allowed in normal HTML pages. So you can use it for writing FireFox extensions like this one does but that's it.
You could spare yourself the transformations, you could use CSS3 Transitions to flip <div>'s and <ol>'s and any HTML tag you want. Here are some demos with source code explain to see and learn: http://www.webdesignerwall.com/trends/47-amazing-css3-animation-demos/
the next code can be used in 2 modes, mode 1 save the html code to a image, mode 2 save the html code to a canvas.
this code work with the library: https://github.com/tsayen/dom-to-image
*the "id_div" is the id of the element html that you want to transform.
**the "canvas_out" is the id of the div that will contain the canvas
so try this code.
:
function Guardardiv(id_div){
var mode = 2 // default 1 (save to image), mode 2 = save to canvas
console.log("Process start");
var node = document.getElementById(id_div);
// get the div that will contain the canvas
var canvas_out = document.getElementById('canvas_out');
var canvas = document.createElement('canvas');
canvas.width = node.scrollWidth;
canvas.height = node.scrollHeight;
domtoimage.toPng(node).then(function (pngDataUrl) {
var img = new Image();
img.onload = function () {
var context = canvas.getContext('2d');
context.drawImage(img, 0, 0);
};
if (mode == 1){ // save to image
downloadURI(pngDataUrl, "salida.png");
}else if (mode == 2){ // save to canvas
img.src = pngDataUrl;
canvas_out.appendChild(img);
}
console.log("Process finish");
});
}
so, if you want to save to image just add this function:
function downloadURI(uri, name) {
var link = document.createElement("a");
link.download = name;
link.href = uri;
document.body.appendChild(link);
link.click();
}
Example of use:
<html>
<head>
</script src="/dom-to-image.js"></script>
</head>
<body>
<div id="container">
All content that want to transform
</div>
<button onclick="Guardardiv('container');">Convert<button>
<!-- if use mode 2 -->
<div id="canvas_out"></div>
</html>
Comment if that work.
Comenten si les sirvio :)
The easiest solution to animate the DOM elements is using CSS transitions/animations but I think you already know that and you try to use canvas to do stuff CSS doesn't let you to do. What about CSS custom filters? you can transform your elements in any imaginable way if you know how to write shaders. Some other link and don't forget to check the CSS filter lab.
Note: As you can probably imagine browser support is bad.
function convert() {
dom = document.getElementById('divname');
var script,
$this = this,
options = this.options,
runH2c = function(){
try {
var canvas = window.html2canvas([ document.getElementById('divname') ], {
onrendered: function( canvas ) {
window.open(canvas.toDataURL());
}
});
} catch( e ) {
$this.h2cDone = true;
log("Error in html2canvas: " + e.message);
}
};
if ( window.html2canvas === undefined && script === undefined ) {
} else {.
// html2canvas already loaded, just run it then
runH2c();
}
}
Im loading a few images to my canvas and then after they load I want to click a button that saves that canvas image to my server. I can see the script works fine until it gets to the 'toDataURL' part and my function stops executing. What am I doing wrong? Here is my code:
<!DOCTYPE HTML>
<html>
<head>
<style>
body {
margin: 0px;
padding: 0px;
}
</style>
</head>
<body>
<canvas id="myCanvas" width="578"
height="200"></canvas>
<div>
<button onClick="saveCards();">Save</button>
</div>
<script>
function loadImages(sources, callback)
{
var images = {};
var loadedImages = 0;
var numImages = 0;
// get num of sources
for(var src in sources) {
numImages++;
}
for(var src in sources) {
images[src] = new Image();
images[src].onload = function() {
if(++loadedImages >= numImages)
{
callback(images);
}
};
images[src].src = sources[src];
}
}
var canvas =
document.getElementById('myCanvas');
var context = canvas.getContext('2d');
var sources = {
great:
'images/great.jpg',
star:
'images/1Star.jpg', good:
'images/good.jpg'
};
loadImages(sources, function(images) {
context.drawImage(images.great,
0, 0, 80, 120);
context.drawImage(images.star, 80,
0, 80, 120);
context.drawImage(images.good, 160, 0, 80,
120);
});
</script>
<script type="text/javascript">
function saveCards()
{
var canvas=
document.getElementById("myCanvas");
alert("stops");
var theString= canvas.toDataURL();
var postData= "CanvasData="+theString;
var ajax= new XMLHttpRequest();
ajax.open("POST", 'saveCards.php', true);
ajax.setRequestHeader('Content-Type',
'canvas/upload');
ajax.onreadystatechange=function()
{
if(ajax.readyState == 4)
{
alert("image was saved");
}else{
alert("image was not saved");
}
}
ajax.send(postData);
}
</script>
</body>
</html>
Thank you for any help is it because the images are not loaded before toDataUrl is called? If so can you please help me fix it.
This is the php script:
<?php
if(isset($GLOBALS['HTTP_RAW_POST_DATA']));
{
$rawImage=$GLOBALS['HTTP_RAW_POST_DATA'];
$removeHeaders=
substr($rawImage,strpos($rawImage, ",")+1);
$decode=base64_decode($removeHeaders);
$fopen= fopen('images/image.png', 'wb');
fwrite($fopen, $decode);
fclose($fopen);
}
?>
I am getting a security error though.
In the specification for the canvas element it states:
Information leakage can occur if scripts from one origin can access
information (e.g. read pixels) from images from another origin (one
that isn't the same).
To mitigate this, bitmaps used with canvas elements are defined to
have a flag indicating whether they are origin-clean. All bitmaps
start with their origin-clean set to true. The flag is set to false
when cross-origin images or fonts are used.
The toDataURL(), toDataURLHD(), toBlob(), getImageData(), and
getImageDataHD() methods check the flag and will throw a SecurityError
exception rather than leak cross-origin data.
The flag can be reset in certain situations; for example, when a
CanvasRenderingContext2D is bound to a new canvas, the bitmap is
cleared and its flag reset.
Since you are loading images from a different server into a canvas element, the work-around to be able to use toDataURL() is to "copy" the canvas into a new canvas element to reset the origin-clean flag to "true".
You can see an example of this here
I figured what I did wrong, but not really sure why it works now. In my actual code that I am using instead of images/image.png I was using the full url https://www.mywebsite.com/images/image.png For some reason when I just write the shortened images/image.png . It works fine. Thank you for all the help debugging and for your alternative solutions.
I am attempting to use http://html2canvas.hertzen.com/ to take screenshots of my webpage. I am unable to initialize a canvas element using...
var canvas = $('body').html2canvas();
If I were able to get a proper canvas I would follow with something like
var dataUrl = canvas.toDataURL(); //get's image string
window.open(dataUrl); // display image
Unfortunately, the documentations is very limited IMO. http://html2canvas.hertzen.com/documentation.html . I do not believe I need to preload as I am not using any dynamic graphics(but am not even getting that far anyways)
I am simply too noob to understand if this guy is having success with screen capturing using html2canvas
I don't seem to be getting any farther than this fellow..
How to upload a screenshot using html2canvas?
My ideal solution would demonstrate how to create screenshot with minimal code. (Copy html to canvas. get toDataURL string. output string)
ANY insight is GREATLY appreciated =)
You should use it this way:
$('body').html2canvas();
var queue = html2canvas.Parse();
var canvas = html2canvas.Renderer(queue,{elements:{length:1}});
var img = canvas.toDataURL();
window.open(img);
It took me few hours to figure it out, how to use it the right way.
The {elements:{length:1}} is required, due to incomplete implementation of the plugin, otherwise you'll get an error.
Good luck!
You could also use the following:
var html2obj = html2canvas($('body'));
var queue = html2obj.parse();
var canvas = html2obj.render(queue);
var img = canvas.toDataURL();
window.open(img);
To just get a part of the page you can use it this way:
$('#map').html2canvas({
onrendered: function( canvas ) {
var img = canvas.toDataURL()
window.open(img);
}
This is what worked for me.
html2canvas(document.body, {
onrendered: function(canvas) {
var img = canvas.toDataURL()
window.open(img);
}
});
This created a new window for the screenshot.
I only wanted a portion of my page in the screenshot, specifically a container div. So I did the following:
html2canvas($('#myDiv'), {
onrendered: function(canvas) {
var img = canvas.toDataURL()
window.open(img);
}
});
For people looking up the same question, if the above options don't help, hopefully this will.
You can use the following code to capture a screenshot and download the screenshot.
html button creation
<button class="btn btn-default btn-sm" style="margin:0px 0px -10px 970px; padding:2px 4px 1px 4px" onclick="genScreenshot()"><span class="glyphicon glyphicon-envelope"></span></button>
<a id="test"></a>
<div id="box1"></div>
function definition
<script type="text/javascript">
function genScreenshot() {
html2canvas(document.body, {
onrendered: function(canvas) {
$('#box1').html("");
if (navigator.userAgent.indexOf("MSIE ") > 0 ||
navigator.userAgent.match(/Trident.*rv\:11\./))
{
var blob = canvas.msToBlob();
window.navigator.msSaveBlob(blob,'Test file.png');
}
else {
$('#test').attr('href', canvas.toDataURL("image/png"));
$('#test').attr('download','screenshot.png');
$('#test')[0].click();
}
}
});
}
</script>
note: I have created a html button where I have called the function. test is an attribute and box1 is to get the canvas elements.
I have try this way and it working fine for me, you can try this one also.
https://github.com/vijayowork/screenshot-of-div-using-javascript.
I using domtoimage method.