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rest_math_iink.html
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rest_math_iink.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="mobile-web-app-capable" content="yes" />
<meta name="HandheldFriendly" content="true" />
<title>Rest Math</title>
<link rel="stylesheet" href="../assets/style/reset.css" />
<link rel="stylesheet" href="../assets/style/components.css" />
<link rel="stylesheet" href="../assets/style/examples.css" />
<link
rel="stylesheet"
href="https://cdn.jsdelivr.net/npm/katex@0.12.0/dist/katex.min.css"
integrity="sha384-AfEj0r4/OFrOo5t7NnNe46zW/tFgW6x/bCJG8FqQCEo3+Aro6EYUG4+cU+KJWu/X"
crossorigin="anonymous"
/>
<script
defer
src="https://cdn.jsdelivr.net/npm/katex@0.12.0/dist/katex.min.js"
integrity="sha384-g7c+Jr9ZivxKLnZTDUhnkOnsh30B4H0rpLUpJ4jAIKs4fnJI+sEnkvrMWph2EDg4"
crossorigin="anonymous"
></script>
<script type="text/javascript" src="../../dist/iink.min.js"></script>
<style>
#editor {
height: calc(100vh - 166px);
}
</style>
</head>
<body>
<div id="result"></div>
<nav class="flex-container wrap gap">
<button id="clear" class="nav-btn btn-fab-mini btn-lightBlue" disabled>
<img src="../assets/img/clear.svg" />
</button>
<button id="undo" class="nav-btn btn-fab-mini btn-lightBlue" disabled>
<img src="../assets/img/undo.svg" />
</button>
<button id="redo" class="nav-btn btn-fab-mini btn-lightBlue" disabled>
<img src="../assets/img/redo.svg" />
</button>
</nav>
<div id="editor" touch-action="none"></div>
<script>
const editorElement = document.getElementById("editor");
const resultElement = document.getElementById("result");
const clearElement = document.getElementById("clear");
const undoElement = document.getElementById("undo");
const redoElement = document.getElementById("redo");
function cleanLatex(latexExport) {
if (typeof latexExport === "number") {
latexExport = latexExport.toString();
}
if (latexExport.includes("\\\\")) {
const steps = "\\begin{align*}" + latexExport + "\\end{align*}";
return steps.replace("\\begin{aligned}", "").replace("\\end{aligned}", "").replace(new RegExp("(align.{1})", "g"), "aligned");
}
return latexExport.replace(new RegExp("(align.{1})", "g"), "aligned");
}
/**
* we expose the editor for use in the integration test
*/
let editor;
/**
* We use a function to wait the server configuration to load
*/
async function loadEditor() {
const res = await fetch("../server-configuration.json");
const conf = await res.json();
const options = {
configuration: {
server: {
...conf,
protocol: "REST"
},
recognition: {
type: "MATH",
math: {
mimeTypes: ["application/x-latex"]
}
}
}
};
/**
* Instanciate editor
* @param {Element} The DOM element to attach the ink paper
* @param {Object} The Editor parameters
*/
editor = new iink.Editor(editorElement, options);
/**
* async initialize editor behaviors
*/
await editor.initialize();
editor.events.addEventListener("changed", (event) => {
undoElement.disabled = !event.detail.canUndo;
redoElement.disabled = !event.detail.canRedo;
clearElement.disabled = !event.detail.canClear;
});
editor.events.addEventListener("exported", (evt) => {
const exports = evt.detail;
if (exports && exports["application/x-latex"]) {
try {
katex.render(cleanLatex(exports["application/x-latex"]), resultElement);
} catch (error) {
resultElement.innerHTML = '<span>' + cleanLatex(exports['application/x-latex']) + '</span>';
}
} else {
resultElement.innerHTML = "";
}
});
clearElement.addEventListener("click", async () => {
editor.clear();
resultElement.innerHTML = "";
});
undoElement.addEventListener("click", () => {
editor.undo();
});
redoElement.addEventListener("click", () => {
editor.redo();
});
window.addEventListener("resize", () => {
editor.resize();
});
};
loadEditor().catch(error => console.error(error));
</script>
</body>
</html>