katex_flutter 2.0.2+8 
katex_flutter: ^2.0.2+8 copied to clipboard
testapp.schulePerformantly render scientific equations using the KaTeX library on Android, iOS and the web platform.
katex_flutter #
Render scientific equations using the KaTeX library.
- Mathematics / Maths Equations (Algebra, Calculus, Geometry, Geometry etc...)
- Physics Equations
- Signal Processing Equations
- Chemistry Equations
- Statistics / Stats Equations
Rendering is done using KaTeX.
katex_flutter is working on Android, iOS, and the web platform. Desktop support is planned.
On mobile platofrom this package mainly depends on webview_flutter plugin.
On web platform this package directly into Flutter's platfrom view's shadow root.
Unlike flutter_tex it does not create a local web server. This increases the performance significantly and allows non-mobile platforms.
API #
KaTeX(
@required laTeX, // The LaTeX code to be rendered
delimiter = '\$', // The delimiter to be used for inline LaTeX
displayDelimiter = '\$\$', // The delimiter to be used for Display (centered, "important") LaTeX
color = Colors.black, // Background color
background = Colors.white, // Text color
inheritWidth = true); // Whether to use the parent's width or only the minimum required by the equation
Use this package as a library #
1. Depend on it #
Add this to your package's pubspec.yaml file:
dependencies:
katex_flutter: ^2.0.1+7
2. Install it #
You can install packages from the command line:
with Flutter:
flutter pub get
Alternatively, your editor might support flutter pub get. Check the docs for your editor to learn more.
3. Import it #
Now in your Dart code, you can use:
import 'package:katex_flutter/katex_flutter.dart';
Web-only: update web/index.html #
Add the following code into the <head>...</head> section of your web/index.html:
If you want to use different LaTeX delimiters than $ for inline and $$ for display LaTeX, you should modify the delimiters section below. In future releases these manual changes will become unneccesairy. We just didn't have enough of time for coding a dynamic implimentation.
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.11.1/dist/katex.min.css" integrity="sha384-zB1R0rpPzHqg7Kpt0Aljp8JPLqbXI3bhnPWROx27a9N0Ll6ZP/+DiW/UqRcLbRjq" crossorigin="anonymous">
<script defer src="https://cdn.jsdelivr.net/npm/katex@0.11.1/dist/katex.min.js" integrity="sha384-y23I5Q6l+B6vatafAwxRu/0oK/79VlbSz7Q9aiSZUvyWYIYsd+qj+o24G5ZU2zJz" crossorigin="anonymous"></script>
<script defer src="https://cdn.jsdelivr.net/npm/katex@0.11.1/dist/contrib/auto-render.min.js" integrity="sha384-kWPLUVMOks5AQFrykwIup5lo0m3iMkkHrD0uJ4H5cjeGihAutqP0yW0J6dpFiVkI" crossorigin="anonymous"></script>
<script>
function katex_flutter_render(id) {
var foundCorrectPlatformView = false;
// Selecting the correct platform view
document.querySelectorAll("flt-platform-view").forEach(platformView => {
var texView = platformView.shadowRoot.children[1];
if (texView.classList.contains('katex_flutter_code') && texView.id == 'katex_flutter_' + id) {
// Marking platform view as found
foundCorrectPlatformView = true;
// Checking if the LaTeX code was allready rendered by accessing the element's corresponding dataset
if (texView.dataset['katex_flutter_latex_code'] != undefined) {
// If allready rendered, resetting innerHTML
texView.innerHTML = texView.dataset['katex_flutter_latex_code'];
} else {
// If not rendered before, saving original code into the element's corresponsing dataset
texView.dataset['katex_flutter_latex_code'] = texView.innerHTML;
}
// Including CSS into the shadow root
texView.innerHTML += '<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.11.1/dist/katex.min.css" integrity="sha384-zB1R0rpPzHqg7Kpt0Aljp8JPLqbXI3bhnPWROx27a9N0Ll6ZP/+DiW/UqRcLbRjq" crossorigin="anonymous">';
// Marking as rendered
texView.classList.add('katex_fluter_rendered');
renderMathInElement(texView, {
output: 'html',
delimiters: [{
left: "$",
right: "$",
display: false
}, {
left: "$$",
right: "$$",
display: true
}]
})
}
})
// Checking if the platform view was found. If not, waiting and trying again...
if (!foundCorrectPlatformView) {
setTimeout(() => {
katex_flutter_render(id)
}, 500);
return;
}
}
</script>
Source code #
The source code is hosted on GitLab. It's licensed under the terms and conditions of the EUPL-1.2.
This package was initially created for the education project TestApp.
Metadata
Publisher
Metadata
Performantly render scientific equations using the KaTeX library on Android, iOS and the web platform.
License
unknown (LICENSE)
