Using:
WKpdftohml version 0.12.3.2
PHPwkhtmltopdf version 2.2.0
Chart.JS version 2.5.0
I'm trying to print a line graph using the above libraries. I can reproduce a pdf using the shell command: wkhtmltopdf --javascript-delay 5000 " http://netdna.webdesignerdepot.com/uploads7/easily-create-stunning-animated-charts-with-chart-js/chartjs-demo.html" test2.pdf
So there is no problem with WKhtmltopdf.
The problem is when I do it in my app, using the PHPwkhtmltopdf library. I get a blank page.
From my research these are the things I tried:
Added 'javascript-delay' => 500 to Chart.JS options;
Added animation:{onComplete: function () {window.JSREPORT_READY_TO_START =true} to Chart.JS options;
Added <div style="width:800px;height:200;font-size:10px;"> to the parent div of canvas html tag
Added ctx.canvas.width = 800;ctx.canvas.height = 200; to javascript initialization of the chart.
Well nothing worked. I love Chart.JS and WKhtmltopdf, but if I can't print I'll have to drop one of them. Is there any solution?
This is my php code for the PHPwkhtmltopdf:
public function imprimir ($request, $response)
{
// include_once 'config/constants.php';
// include_once 'resources/auxiliar/helpers.php';
$folha = $_POST['printit'];
$variaveis = explode(',', $folha);
$nomeFicheiro = $variaveis[0];
$printName = substr($nomeFicheiro, 5);
if (isset($variaveis[2])) {
$_SESSION['mesNumero'] = $variaveis[2];
$_SESSION['mes'] = $variaveis[1];
} else {
$mesNumero = 0;
$mes = '';
}
ob_start();
if ($nomeFicheiro == 'printPpiam') {
require ('C:/xampp/htdocs/.../'.$nomeFicheiro.'.php');
} else {
require ('C:/xampp/htdocs/.../'.$nomeFicheiro.'.php');
}
$content = ob_get_clean();
// You can pass a filename, a HTML string, an URL or an options array to the constructor
$pdf = new Pdf($content);
// On some systems you may have to set the path to the wkhtmltopdf executable
$pdf->binary = 'C:/Program Files/wkhtmltopdf/bin/wkhtmltopdf';
$pdf -> setOptions(['orientation' => 'Landscape',
'javascript-delay' => 500,
// 'enable-javascript' => true,
// 'no-stop-slow-scripts' => true]
]);
if (!$pdf->send($printName.'.pdf')) {
throw new Exception('Could not create PDF: '.$pdf->getError());
}
$pdf->send($printName.'.pdf');
}
# Update 1
Made a php file with the page output. Run it in the browser and the graph rendered. When I do it in the console it renders everything except the graph!
How can it be wkhtmltopdf renders the graphics in this page : http://netdna.webdesignerdepot.com/uploads7/easily-create-stunning-animated-charts-with-chart-js/chartjs-demo.html but not my own?!
# Update 2
After Quince's comment, I tried just turning the animations off, but I'm not sure on how to do that. I tried:
$pdf -> setOptions(['orientation' => 'Landscape',
'javascript-delay' => 500,
// 'window-status' => 'myrandomstring ',
'animation' => false,
'debug-javascript',
'no-stop-slow-scripts',
]);
But it fails.
Here's the code that works with wkhtmltopdf version 0.12.5:
chart.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.8.0/Chart.min.js"></script>
<style>
.reportGraph {width:900px}
</style>
</head>
<body>
<div class="reportGraph"><canvas id="canvas"></canvas></div>
<script type="text/javascript">
// wkhtmltopdf 0.12.5 crash fix.
// https://github.com/wkhtmltopdf/wkhtmltopdf/issues/3242#issuecomment-518099192
'use strict';
(function(setLineDash) {
CanvasRenderingContext2D.prototype.setLineDash = function() {
if(!arguments[0].length){
arguments[0] = [1,0];
}
// Now, call the original method
return setLineDash.apply(this, arguments);
};
})(CanvasRenderingContext2D.prototype.setLineDash);
Function.prototype.bind = Function.prototype.bind || function (thisp) {
var fn = this;
return function () {
return fn.apply(thisp, arguments);
};
};
function drawGraphs() {
new Chart(
document.getElementById("canvas"), {
"responsive": false,
"type":"line",
"data":{"labels":["January","February","March","April","May","June","July"],"datasets":[{"label":"My First Dataset","data":[65,59,80,81,56,55,40],"fill":false,"borderColor":"rgb(75, 192, 192)","lineTension":0.1}]},
"options":{}
}
);
}
window.onload = function() {
drawGraphs();
};
</script>
</body>
</html>
Run:
$ wkhtmltopdf chart.html chart.pdf:
Loading pages (1/6)
Counting pages (2/6)
Resolving links (4/6)
Loading headers and footers (5/6)
Printing pages (6/6)
Done
Found the answer. After I created a separate file, outside the framework, i did some tests again. It rendered the graph in the browser so I tried to use the command tool WKhtmltopdf, and it did not worked, when it did with other examples (see Update #1). So there is something wrong with my php page.
Ran the same tests that I did in the framework, and got the answer for my problem. By introducing a parent div tag width dimensions in the canvas tag it made the graph render in the page.
<div style="width:800px;height:200;">
<canvas id="myChart" style="width:800px;height:200;"></canvas>
</div>
The proposition was found in this site: Github, so thanks laguiz.
Try adding this, as according to this github source
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-polyfill/7.0.0/polyfill.min.js"></script>
Solved it by downgrading wkhtmltopdf: 0.12.4 > 0.12.2.1
chart.js version seemed to have no influence. I used 2.7.0.
Fixed width and height seem to be required as well.
Edit: Since wkhtmltopdf is dead, I switched to Puppeteer recently.
I was dealing with the same issue using rotativa to export my ASP.NET MVC page with Chart.JS to PDF with no luck.
After a couple of days I finally found a super-easy solution to achieve my goal. What I did is simply to use the .toBase64Image() method of Chart.JS to encode the chart to a base64 string variable in Javascript. Then I saved this string into a model and then on the PDF html page a used tag where i put the base64encoded string to a scr property and the result is great :-)
javascript:
//save Chart as Image
var url_base64 = document.getElementById('myChart').toDataURL('image/png');
//set the string as a value of a hidden element
document.getElementById('base64graph').value = url_base64;
PDF view:
<img style='display:block; width:900px;height:400px;position:relative;margin:auto;text-align:center;' id='base64image'
src='#Model.base64graph' />
I'm trying to improve on the answer by temuri, which is great, but a bit bloated. I ran into the OP's issues (even same WKpdftohml version) and this did the trick for me:
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.8.0/Chart.min.js"></script>
<div style="width: 400px;"><canvas id="canvas"></canvas></div>
<script type="application/javascript">
// wkhtmltopdf 0.12.5 crash fix.
// https://github.com/wkhtmltopdf/wkhtmltopdf/issues/3242#issuecomment-518099192
Function.prototype.bind = Function.prototype.bind || function (thisp) {
const fn = this;
return function () {
return fn.apply(thisp, arguments);
};
};
new Chart(
document.getElementById("canvas"), {
"responsive": false,
"type":"line",
"data":{"labels":["January","February","March","April","May","June","July"],"datasets":[{"label":"My First Dataset","data":[65,59,80,81,56,55,40],"fill":false,"borderColor":"rgb(75, 192, 192)","lineTension":0.1}]},
"options":{}
}
);
</script>
I'm yet to figure out how to get the chart library via ordinary tools like npm, instead of getting it via ajax like here in the first line. Note that this can impact your chart resolution.
I was strugling with that too and you self-answer did not help my case. I am using symfony 3.3 and Chart.js 2 and whatever I did, did not work properly. So I have solved it in a different manner (maybe not a clean one) and I wanted to post it here for inspiration to others.
I needed to export a page, that I was presenting to the user in a browser. In browser, I used Javascript to get picture out of the rendered graph with
animation: {
onComplete: function(animation) {
console.log('done');
var url=document.getElementById("barChartByCountryWeight{{ part }}{{ subsetKey }}").toDataURL();
$.ajax({
url: 'saveChartImages',
type: 'POST',
data: { 'barChartByCountryWeight{{ part }}{{ subsetKey }}': url },
success: function(result) {
console.log(result);
console.log('the request was successfully sent to the server');
},
error: function (request, error) {
console.log(arguments[0]['responseText']);
console.log(" Can't do because: " + error);
}
});
}
}
And on server side I put it in session and in a controller for the PDF export, I have taken the image from session and put the image in the HTML, that is converted to PDF.
Hope that helps.
I have implemented the working code for this issue. You can check out the working code here.
NOTE: For generating pdf you must disable the Chart JS animation or add the option javascript-delay=>1000 to the wkhtmltopdf options.
I have solved this problem when I tried to use Chartjs 1 instead of a new chart js. The reason for this is because laravel snappy uses wkhtmltopdf, which doesn't support css animation, while new chartjs uses css animation.
This github issue shows that.
The solution i found is to use google chart instead. It also uses svg, so you can get high resolution charts.
I just got finished implementing the solution from this question on a similar topic, but the solution is not working for me.
I'm trying to create a dashboard that uses data from a google spreadsheet but I can't seem to get it to load correctly.
I routinely get the following error message whenever I load the web page:
One or more participants failed to draw()
Here's the code I'm using right now:
<html>
<head>
<script type="text/javascript">
// Load the Visualization API and the controls package.
google.charts.load('current', {'packages':['corechart', 'controls']});
// Set a callback to run when the Google Visualization API is loaded.
google.charts.setOnLoadCallback(initialize);
function initialize() {
var query = new google.visualization.Query('https://docs.google.com/spreadsheets/d/1FnETUo8yrthFBdUYsQ8Ty9e8pK3ouWZntvDnXlhHKws/edit#gid=0');
query.send(drawDashboard)
}
// Callback that creates and populates a data table,
// instantiates a dashboard, a range slider and a pie chart,
// passes in the data and draws it.
function drawDashboard(response) {
// Create our data table.
var data = response.getDataTable();
// Create a dashboard.
var dashboard = new google.visualization.Dashboard(
document.getElementById('dashboard_div'));
// Create a range slider, passing some options
var donutRangeSlider = new google.visualization.ControlWrapper({
'controlType': 'NumberRangeFilter',
'containerId': 'filter_div',
'options': {
'filterColumnLabel': 'Donuts eaten'
}
});
// Create a pie chart, passing some options
var pieChart = new google.visualization.ChartWrapper({
'chartType': 'PieChart',
'containerId': 'chart_div',
'options': {
'width': 300,
'height': 300,
'pieSliceText': 'value',
'legend': 'right'
}
});
// Establish dependencies, declaring that 'filter' drives 'pieChart',
// so that the pie chart will only display entries that are let through
// given the chosen slider range.
dashboard.bind(donutRangeSlider, pieChart);
// Draw the dashboard.
dashboard.draw(data);
}
</script>
</head>
<body>
<div id="dashboard_div">
<!--Divs that will hold each control and chart-->
<div id="filter_div"></div>
<div id="chart_div"></div>
</div>
</body>
</html>
Link to the spreadsheet can be seen here: https://docs.google.com/spreadsheets/d/1FnETUo8yrthFBdUYsQ8Ty9e8pK3ouWZntvDnXlhHKws/edit#gid=420659822
The dashboard I'm trying to draw is taken directly from the source documentation listed here: https://developers.google.com/chart/interactive/docs/gallery/controls
I'm trying to follow the example about loading external spreadsheets here: https://developers.google.com/chart/interactive/docs/spreadsheets
The link to the working file I'm using for this project can be seen here: https://s3-us-west-2.amazonaws.com/example-server/index.html
I've tried removing all header links and styling in the previous link to verify nothing else was interfering with the visualization API and this did not solve the problem either.
Also:
Privacy for the spreadsheet is set to 'Public on the web'
The link being used in the query is taken directly from the address bar, but I also used the 'sharing link' provided by google when you prompt for it.
I'm using data that's exactly the same as the examples in the google documentation to make implementation as easily as possible.
Edit
Due to an answerer's prompt, I experiemented with different modifications of my query URL, which so far have not worked.
Here's the URL in my address bar:
URL
It's a single sheet document.
In response to the first answer, I've tried the following query URL's, but without success.
First:
https://docs.google.com/spreadsheets/d/1FnETUo8yrthFBdUYsQ8Ty9e8pK3ouWZntvDnXlhHKws/gviz/tq?sheet=Sheet1
Second:
https://docs.google.com/spreadsheets/d/1FnETUo8yrthFBdUYsQ8Ty9e8pK3ouWZntvDnXlhHKws/gviz/tq?gid=0
Third:
https://docs.google.com/spreadsheets/d/1FnETUo8yrthFBdUYsQ8Ty9e8pK3ouWZntvDnXlhHKws/gviz/tq?gid=1FnETUo8yrthFBdUYsQ8Ty9e8pK3ouWZntvDnXlhHKws
The idea behind this last URL is that in the new google sheets the gid is the string after d/ and before /edit.
Your help is greatly appreciated.
Find your dataSourceURL at:
var query = new google.visualization.Query('https://docs.google.com/spreadsheets/d/1FnETUo8yrthFBdUYsQ8Ty9e8pK3ouWZntvDnXlhHKws/edit#gid=0');
Replace:
edit#gid=0
with:
gviz/tq?sheet=Sheet1
If that doesn't work, then you'll need to use the gid which is a unique 9 to 10 digit number. (ex. gid=1104711743). Open your sheet and look at the address bar, you should see it at the end of the url.
Your line should look like this:
var query = new google.visualization.Query('https://docs.google.com/spreadsheets/d/1FnETUo8yrthFBdUYsQ8Ty9e8pK3ouWZntvDnXlhHKws/gviz/tq?gid=1234567890');
I'm currently working on a rendering in Sitecore 7.2 (MVC) that will show a jwPlayer given a link to a video (either in the Media Library or from an external source, like YouTube). When I add the rendering (with a valid data source) through Presentation Details in the Content Editor everything looks fine, and works perfectly. The trouble that I'm running into right now, though, is that when I try to do the same thing from the Page Editor (with the exact same rendering and data source), nothing is showing up in that placeholder at all.
The part of the rendering that deals with the video is as follows:
#if (Model.VideoLink != null && Model.Image != null)
{
var vidid = Guid.NewGuid().ToString();
<div class="article-video-module">
<p class="video-placeholder-text">#Html.Raw(Model.Heading)</p>
<div id="#vidid">Loading the player...</div>
<script type="text/javascript">
jwplayer("#vidid").setup({
file: "#Model.VideoLink.Url",
image: "#Model.Image.Src",
width: "100%",
aspectratio: "16:9",
sharing: {
link: "#Model.VideoLink.Url"
},
primary: 'flash'
});
jwplayer('videodiv-#vidid').onPlay(function () {
$(this.container).closest('.fullbleed-video-module').find('.video-placeholder-text').hide();
});
jwplayer('videodiv-#vidid').onPause(function () {
$(this.container).closest('.fullbleed-video-module').find('.video-placeholder-text').show();
});
</script>
</div>
#Editable(a => Model.Description)
}
Other things that might help:
When I comment out everything in the <script> tag above the rendering shows up perfectly.
A reference to jwplayer.js is found on the page (that was my first thought)
Console errors in Javascript:
No suitable players found and fallback enabled on jwplayer.js
Uncaught TypeError: undefined is not a function on jwplayer("#vidid").setup({ and on jwplayer('videodiv-#vidid').onPlay(function () { from above.
How can I get jwPlayer and Page Editor to work nicely with each other?
The issue is that when you add a component through Page Editor, the script is fired before the div <div id="#vidid"> element is added to DOM. Don't ask me why...
The solution is really simple: wrap your javascript code with if condition, checking if the div is already there:
<script type="text/javascript">
if (document.getElementById("#vidid")) {
jwplayer("#vidid").setup({
file: "#Model.VideoLink.Url",
image: "#Model.Image.Src",
width: "100%",
aspectratio: "16:9",
sharing: {
link: "#Model.VideoLink.Url"
},
primary: 'flash'
});
jwplayer('videodiv-#vidid').onPlay(function () {
$(this.container).closest('.fullbleed-video-module').find('.video-placeholder-text').hide();
});
jwplayer('videodiv-#vidid').onPause(function () {
$(this.container).closest('.fullbleed-video-module').find('.video-placeholder-text').show();
});
}
</script>
There is also another issue with your code - Guid can start with number, and this is not a valid id for html elements. You should change your code to:
var vidid = "jwp-" + Guid.NewGuid().ToString();
I wouldn't rule out a conflict with the version of JQuery that the Page Editor uses - this usually messes stuff up. There's a good post here on to overcome the issues.
http://jrodsmitty.github.io/blog/2014/11/12/resolving-jquery-conflicts-in-page-editor/
I am attempting to render the HTML in a tooltip, but unfortunately its not working at all.
This is how it has been programmed:
<div class="someField"></div>
<script>
$(function () {
$('.someField').append('(Example)');
$("body").tooltip({html:true,selector: '[data-toggle=tooltip]'});
});
</script>
I have set data-html="true" in the link and furthermore enabled html in the tooltip parameter.
Whats wrong with my code?
UPDATE:
Bootstrap v2.3.1 is used for this project (old framework).
Try this:
$("body").tooltip({ html: true, selector: '[data-toggle="tooltip"]' });
WORKING DEMO
I have a form where I have joomla2.5 Editor. I want to show the content of that joomla2.5 Editor in Iframe Joomla2.5 Modal Box.
I use joomla editor
<?php
$editor =& JFactory::getEditor();
echo $editor->display( 'body', '', '400', '150', '20', '20', false, $params );
?>
This page is in view folder.
I use the code in js file like window.parent.document.getElementById('body').value or window.parent.jInsertEditorText(tag, this.body);And it is included in js file. when I try to alert, alert shows null.
How to fix this in js file. If any body knows about it, please, reply it.
I need your hand.
Thank you
I write the answer here, because the comments are not good to display
code
Joomla modal functionality is good to show a link from a component but does not allow us to open a given element on the page. Therefor you need to write your own code, first of all do not override Joomla's core or all the modifications you make will be overriden the next time you upgrade. So assuming that you take this into account:
1- First thing to do, add the javascript code for your custom modal window. You will need to pass the text container div id or classname to the following code:
<script type="text/javascript">
$(document).ready(function(){
// Main parameters:
// Modify texteditor-id with the id or classname on your text div. For a classname use '.' instead of '#'
var HTMLContent = $("#texteditor-id").html();
var width = 600;
var height = 250;
$('#button').click(function(){
// transparent background
// we create a new div, with two attributes
var bgdiv = $('<div>').attr({
className: 'bgtransparent',
id: 'bgtransparent'
});
// add the new div to the page
$('body').append(bgdiv);
// get the widht and height of the main window
var wscr = $(window).width();
var hscr = $(window).height();
// set the background dimensions
$('#bgtransparent').css("width", wscr);
$('#bgtransparent').css("height", hscr);
// modal window
// create other div for the modal window and two attributes
var moddiv = $('<div>').attr({
className: 'bgmodal',
id: 'bgmodal'
});
// add div to the page
$('body').append(moddiv);
// add HTML content to the modal window
$('#bgmodal').append(HTMLContent);
// resize for center adjustment
$(window).resize();
});
$(window).resize(function(){
// explorer window dimensions
var wscr = $(window).width();
var hscr = $(window).height();
// setting background dimensions
$('#bgtransparent').css("width", wscr);
$('#bgtransparent').css("height", hscr);
// setting modal window size
$('#bgmodal').css("width", ancho+'px');
$('#bgmodal').css("height", alto+'px');
// getting modal window size
var wcnt = $('#bgmodal').width();
var hcnt = $('#bgmodal').height();
// get central position
var mleft = ( wscr - wcnt ) / 2;
var mtop = ( hscr - hcnt ) / 2;
// setting modal window centered
$('#bgmodal').css("left", mleft+'px');
$('#bgmodal').css("top", mtop+'px');
});
});
function closeModal(){
// remove created divs
$('#bgmodal').remove();
$('#bgtransparent').remove();
}
</script>
2- Your preview link must look something like this, the most important part is the id="button" part because it will be used to be identified by the previous jquery code:
<input type="button" id="button" value="Preview" />
3- Add the following code to your css
.bgtransparent{
position:fixed;
left:0;
top:0;
background-color:#000;
opacity:0.6;
filter:alpha(opacity=60);
}
.bgmodal{
position:fixed;
font-family:arial;
font-size:1em;
border:0.05em solid black;
overflow:auto;
background-color:#fff;
}
And that is basically what you need to do. Hope that helps!
Joomla has an inbuilt way to show modal boxes:
First you need to do is ask Joomla to load the modal library:
<?php JHTML::_('behavior.modal'); ?>
And this is the code that opens the modal window:
<a rel="{handler: 'iframe', size: {x: 750, y: 600}}" href="url_to_modal_editor" target="_blank"> Open Modal Editor</a>
This will go in the linked href page (the page of the modal editor), lets say editor.p:
<?php
$editor =& JFactory::getEditor();
echo $editor->display( 'body', '', '400', '150', '20', '20', false, $params );
?>
Please include class="modal" in anchor tag.