Eilles/latex2image-web
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Added checkbox option for wrapping with align, and a spinner indicator

Browse Source
This commit is contained in:
Joseph Rautenbach 2021-01-18 00:56:47 +02:00
parent cdbe20ea57
commit 53ad55c443
3 changed files with 70 additions and 44 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
app.js
View File

@ -142,9 +142,7 @@ function getLatexTemplate(equation) {
\\usepackage[utf8]{inputenc} \\usepackage[utf8]{inputenc}
\\thispagestyle{empty} \\thispagestyle{empty}
\\begin{document} \\begin{document}
\\begin{align*}
${equation} ${equation}
\\end{align*}
\\end{document}`; \\end{document}`;
} }

84
static/index.html
View File

@ -5,9 +5,8 @@
<meta charset="utf-8"> <meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"> <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="description" content="Convert LaTeX math equations to PNG/JPG/SVG images, with transparent backgrounds and perfect LaTeX rendering"> <meta name="description" content="Convert LaTeX math equations to PNG/JPG/SVG images, with transparent backgrounds and perfect LaTeX rendering">
<meta name="author" content="Joseph Rautenbach">
<!-- Bootstrap CSS --> <!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous"> <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<link rel="stylesheet" href="custom.css"> <link rel="stylesheet" href="custom.css">
<script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script> <script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
<script src="latex2image-client.js"></script> <script src="latex2image-client.js"></script>
@ -27,39 +26,58 @@
</div> </div>
<div class="container"> <div class="container">
<div class="card"> <div class="card">
<div class="card-body"> <form>
<div class="form-group"> <div class="card-body">
<textarea class="form-control" id="latexInputTextArea" placeholder="Enter LaTeX math equation" rows="5"></textarea> <div class="form-group">
</div> <textarea class="form-control" id="latexInputTextArea" placeholder="Enter LaTeX math equation" rows="5"></textarea>
<div class="form-row">
<div class="form-group col-sm-6">
<label for="outputFormatSelect">Image format</label>
<select class="form-control" id="outputFormatSelect">
<option selected>PNG</option>
<option>SVG</option>
<option>JPG</option>
</select>
</div> </div>
<div class="form-group col-sm-6"> <div class="form-row">
<label for="outputScaleSelect">Scale</label> <div class="col-sm-6">
<select class="form-control" id="outputScaleSelect"> <div class="form-group">
<option>10%</option> <label for="outputFormatSelect">Image format</label>
<option>25%</option> <select class="form-control" id="outputFormatSelect">
<option>50%</option> <option selected>PNG</option>
<option>75%</option> <option>JPG</option>
<option>100%</option> <option>SVG</option>
<option selected>125%</option> </select>
<option>150%</option> </div>
<option>200%</option> </div>
<option>500%</option> <div class="col-sm-6">
<option>1000%</option> <div class="form-group">
</select> <label for="outputScaleSelect">Scale</label>
<select class="form-control" id="outputScaleSelect">
<option>10%</option>
<option>25%</option>
<option>50%</option>
<option>75%</option>
<option>100%</option>
<option selected>125%</option>
<option>150%</option>
<option>200%</option>
<option>500%</option>
<option>1000%</option>
</select>
</div>
</div>
</div> </div>
<div class="form-group">
<div class="form-check">
<input class="form-check-input" type="checkbox" id="autoAlignCheckbox" checked>
<label class="form-check-label" for="autoAlignCheckbox">
Wrap input with <code>\begin{align*}</code> and <code>\end{align*}</code> automatically
</label>
</div>
</div>
<button class="btn btn-primary" type="button" id="convertButton">
<span class="spinner-grow spinner-grow-sm d-none" role="status" aria-hidden="true" id="convertSpinner"></span>
<span id="convertButtonText">Convert</span>
</button>
&nbsp;&nbsp;
<button class="btn btn-info" type="button" id="exampleButton">
Show Example
</button>
</div> </div>
<input type='submit' class="btn btn-primary" id="convertButton" value="Convert"> </form>
&nbsp;&nbsp;
<input type='submit' class="btn btn-info" id="exampleButton" value="Show Example">
</div>
</div> </div>
</div> </div>
<br> <br>
@ -68,7 +86,7 @@
<div class="card-body"> <div class="card-body">
<img id="resultImage" /> <img id="resultImage" />
<br><br> <br><br>
<a href="#" class="btn btn-primary" role="button" id="downloadButton" download>Save Image</a> <a href="#" class="btn btn-primary" role="button" id="downloadButton" target="_blank" download>Save Image</a>
</div> </div>
</div> </div>
<div class="alert alert-danger initiallyHidden" id="errorAlert"></div> <div class="alert alert-danger initiallyHidden" id="errorAlert"></div>

28
static/latex2image-client.js
View File

@ -1,6 +1,8 @@
var sampleEquation = '\\frac{\\pi}{2} = \\int_{-1}^{1} \\sqrt{1-x^2}\\ dx'; var sampleEquation = '\\frac{\\pi}{2} = \\int_{-1}^{1} \\sqrt{1-x^2}\\ dx';
var hasShownBefore = false; var hasShownBefore = false;
var ENDPOINT = '/convert';
$(document).ready(function() { $(document).ready(function() {
function show(resultData) { function show(resultData) {
function afterSlideUp() { function afterSlideUp() {
@ -30,38 +32,45 @@ $(document).ready(function() {
} }
$('#convertButton').click(function() { $('#convertButton').click(function() {
if (!$('#latexInputTextArea').val()) { var latexInput = $('#latexInputTextArea').val();
show(JSON.stringify({
error: 'No LaTeX input provided' if (!latexInput) {
})); show({ error: 'No LaTeX input provided.' });
return; return;
} }
if ($('#autoAlignCheckbox').prop('checked')) {
latexInput = '\\begin{align*}\n' + latexInput + '\\end{align*}\n';
}
$('#result').slideUp(hasShownBefore ? 330 : 0, function() { $('#result').slideUp(hasShownBefore ? 330 : 0, function() {
$('#resultImage').attr('src', ''); $('#resultImage').attr('src', '');
}); });
$('#convertButton').prop('disabled', true); $('#convertButton').prop('disabled', true);
$('#exampleButton').prop('disabled', true); $('#exampleButton').prop('disabled', true);
$('#convertButton').prop('value', 'Converting...'); $('#convertButtonText').html('Converting...');
$('#convertSpinner').removeClass('d-none');
$.ajax({ $.ajax({
url: '/convert', url: ENDPOINT,
type: 'POST', type: 'POST',
data: { data: {
latexInput: $('#latexInputTextArea').val(), latexInput: latexInput,
outputFormat: $('#outputFormatSelect').val(), outputFormat: $('#outputFormatSelect').val(),
outputScale: $('#outputScaleSelect').val() outputScale: $('#outputScaleSelect').val()
}, },
success: function(data) { success: function(data) {
$('#convertButton').prop('disabled', false); $('#convertButton').prop('disabled', false);
$('#exampleButton').prop('disabled', false); $('#exampleButton').prop('disabled', false);
$('#convertButton').prop('value', 'Convert'); $('#convertButtonText').html('Convert');
$('#convertSpinner').addClass('d-none');
show(data); show(data);
}, },
error: function() { error: function() {
$('#convertButton').prop('disabled', false); $('#convertButton').prop('disabled', false);
$('#exampleButton').prop('disabled', false); $('#exampleButton').prop('disabled', false);
$('#convertButton').prop('value', 'Convert'); $('#convertButtonText').html('Convert');
$('#convertSpinner').addClass('d-none');
alert('Error communicating with server'); alert('Error communicating with server');
} }
}); });
@ -70,6 +79,7 @@ $(document).ready(function() {
// Show and convert a sample equation // Show and convert a sample equation
$('#exampleButton').click(function() { $('#exampleButton').click(function() {
$('#latexInputTextArea').val(sampleEquation); $('#latexInputTextArea').val(sampleEquation);
$('#autoAlignCheckbox').prop('checked', true);
$('#convertButton').click(); $('#convertButton').click();
}); });
}); });