Added checkbox option for wrapping with align, and a spinner indicator
This commit is contained in:
Joseph Rautenbach
parent
cdbe20ea57
commit
53ad55c443
2
app.js
2
app.js
@ -142,9 +142,7 @@ function getLatexTemplate(equation) {
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\\usepackage[utf8]{inputenc}
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\\thispagestyle{empty}
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\\begin{document}
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\\begin{align*}
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${equation}
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\\end{align*}
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\\end{document}`;
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}
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@ -5,9 +5,8 @@
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
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<meta name="description" content="Convert LaTeX math equations to PNG/JPG/SVG images, with transparent backgrounds and perfect LaTeX rendering">
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<meta name="author" content="Joseph Rautenbach">
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<!-- Bootstrap CSS -->
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<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
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<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
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<link rel="stylesheet" href="custom.css">
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<script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
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<script src="latex2image-client.js"></script>
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@ -27,39 +26,58 @@
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</div>
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<div class="container">
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<div class="card">
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<div class="card-body">
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<div class="form-group">
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<textarea class="form-control" id="latexInputTextArea" placeholder="Enter LaTeX math equation" rows="5"></textarea>
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</div>
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<div class="form-row">
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<div class="form-group col-sm-6">
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<label for="outputFormatSelect">Image format</label>
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<select class="form-control" id="outputFormatSelect">
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<option selected>PNG</option>
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<option>SVG</option>
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<option>JPG</option>
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</select>
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<form>
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<div class="card-body">
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<div class="form-group">
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<textarea class="form-control" id="latexInputTextArea" placeholder="Enter LaTeX math equation" rows="5"></textarea>
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</div>
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<div class="form-group col-sm-6">
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<label for="outputScaleSelect">Scale</label>
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<select class="form-control" id="outputScaleSelect">
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<option>10%</option>
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<option>25%</option>
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<option>50%</option>
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<option>75%</option>
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<option>100%</option>
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<option selected>125%</option>
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<option>150%</option>
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<option>200%</option>
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<option>500%</option>
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<option>1000%</option>
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</select>
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<div class="form-row">
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<div class="col-sm-6">
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<div class="form-group">
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<label for="outputFormatSelect">Image format</label>
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<select class="form-control" id="outputFormatSelect">
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<option selected>PNG</option>
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<option>JPG</option>
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<option>SVG</option>
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</select>
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</div>
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</div>
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<div class="col-sm-6">
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<div class="form-group">
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<label for="outputScaleSelect">Scale</label>
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<select class="form-control" id="outputScaleSelect">
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<option>10%</option>
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<option>25%</option>
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<option>50%</option>
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<option>75%</option>
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<option>100%</option>
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<option selected>125%</option>
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<option>150%</option>
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<option>200%</option>
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<option>500%</option>
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<option>1000%</option>
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</select>
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</div>
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</div>
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</div>
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<div class="form-group">
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<div class="form-check">
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<input class="form-check-input" type="checkbox" id="autoAlignCheckbox" checked>
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<label class="form-check-label" for="autoAlignCheckbox">
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Wrap input with <code>\begin{align*}</code> and <code>\end{align*}</code> automatically
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</label>
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</div>
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</div>
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<button class="btn btn-primary" type="button" id="convertButton">
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<span class="spinner-grow spinner-grow-sm d-none" role="status" aria-hidden="true" id="convertSpinner"></span>
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<span id="convertButtonText">Convert</span>
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</button>
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<button class="btn btn-info" type="button" id="exampleButton">
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Show Example
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</button>
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</div>
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<input type='submit' class="btn btn-primary" id="convertButton" value="Convert">
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<input type='submit' class="btn btn-info" id="exampleButton" value="Show Example">
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</div>
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</form>
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</div>
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</div>
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<br>
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@ -68,7 +86,7 @@
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<div class="card-body">
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<img id="resultImage" />
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<br><br>
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<a href="#" class="btn btn-primary" role="button" id="downloadButton" download>Save Image</a>
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<a href="#" class="btn btn-primary" role="button" id="downloadButton" target="_blank" download>Save Image</a>
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</div>
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</div>
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<div class="alert alert-danger initiallyHidden" id="errorAlert"></div>
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@ -1,6 +1,8 @@
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var sampleEquation = '\\frac{\\pi}{2} = \\int_{-1}^{1} \\sqrt{1-x^2}\\ dx';
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var hasShownBefore = false;
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var ENDPOINT = '/convert';
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$(document).ready(function() {
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function show(resultData) {
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function afterSlideUp() {
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@ -30,38 +32,45 @@ $(document).ready(function() {
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}
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$('#convertButton').click(function() {
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if (!$('#latexInputTextArea').val()) {
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show(JSON.stringify({
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error: 'No LaTeX input provided'
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}));
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var latexInput = $('#latexInputTextArea').val();
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if (!latexInput) {
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show({ error: 'No LaTeX input provided.' });
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return;
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}
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if ($('#autoAlignCheckbox').prop('checked')) {
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latexInput = '\\begin{align*}\n' + latexInput + '\\end{align*}\n';
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}
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$('#result').slideUp(hasShownBefore ? 330 : 0, function() {
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$('#resultImage').attr('src', '');
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});
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$('#convertButton').prop('disabled', true);
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$('#exampleButton').prop('disabled', true);
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$('#convertButton').prop('value', 'Converting...');
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$('#convertButtonText').html('Converting...');
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$('#convertSpinner').removeClass('d-none');
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$.ajax({
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url: '/convert',
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url: ENDPOINT,
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type: 'POST',
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data: {
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latexInput: $('#latexInputTextArea').val(),
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latexInput: latexInput,
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outputFormat: $('#outputFormatSelect').val(),
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outputScale: $('#outputScaleSelect').val()
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},
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success: function(data) {
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$('#convertButton').prop('disabled', false);
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$('#exampleButton').prop('disabled', false);
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$('#convertButton').prop('value', 'Convert');
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$('#convertButtonText').html('Convert');
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$('#convertSpinner').addClass('d-none');
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show(data);
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},
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error: function() {
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$('#convertButton').prop('disabled', false);
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$('#exampleButton').prop('disabled', false);
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$('#convertButton').prop('value', 'Convert');
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$('#convertButtonText').html('Convert');
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$('#convertSpinner').addClass('d-none');
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alert('Error communicating with server');
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}
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});
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@ -70,6 +79,7 @@ $(document).ready(function() {
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// Show and convert a sample equation
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$('#exampleButton').click(function() {
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$('#latexInputTextArea').val(sampleEquation);
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$('#autoAlignCheckbox').prop('checked', true);
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$('#convertButton').click();
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});
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});
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