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[WIP] add copy button for lstlistings #2629

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[WIP] add copy button for lstlistings #2629

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98a91f9
add copy button for lstlistings
evoludolab Sep 6, 2025
5162142
Merge branch 'master' into lstlisting
evoludolab Oct 20, 2025
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57 changes: 54 additions & 3 deletions lib/LaTeXML/resources/CSS/ltx-listings.css
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Original file line number Diff line number Diff line change
@@ -1,5 +1,56 @@

.ltx_listing_data {
float:right; }
float: right;
}
.ltx_listing_data a {
text-decoration:none; }
text-decoration: none;
}
.ltx_listing_copy2clip {
position: absolute;
}
.ltx_listing_button {
appearance: none;
background-color: #FAFBFC;
border: 1px solid rgba(27, 31, 35, 0.15);
border-radius: 6px;
box-shadow: rgba(27, 31, 35, 0.04) 0 1px 0, rgba(255, 255, 255, 0.25) 0 1px 0 inset;
box-sizing: border-box;
color: #24292E;
cursor: pointer;
height: 36px;
padding: 6px;
position: relative;
overflow: hidden;
width: 36px
}
.ltx_listing_button::before,
.ltx_listing_button::after {
content: "";
position: absolute;
inset: 0;
background-position: center;
background-repeat: no-repeat;
background-size: 60%;
transition: opacity 0.6s ease-in-out;
}
.ltx_listing_button::before {
opacity: 1;
/* copy icon */
background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 359 444' fill='none'><defs><clipPath id='clip1'><path d='M0 0h359v444H0zM37 97v310h225V97z'/></clipPath><clipPath id='clip2'><path d='M0 0h359v444H0zM97 37v310h225V37z'/></clipPath></defs><rect x='37' y='97' width='225' height='310' fill='white'/><rect x='37' y='97' width='225' height='310' fill='none' stroke='gray' stroke-linecap='round' stroke-linejoin='round' stroke-width='72' clip-path='url(%23clip1)'/><rect x='97' y='37' width='225' height='310' fill='white'/><rect x='97' y='37' width='225' height='310' fill='none' stroke='gray' stroke-linecap='round' stroke-linejoin='round' stroke-width='72' clip-path='url(%23clip2)'/></svg>");
}
.ltx_listing_button::after {
opacity: 0;
}
.ltx_listing_button.success::after {
opacity: 1;
/* success icon */
background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 359 444'><circle cx='179.5' cy='222' r='178.3' fill='%2300a337'/><path d='M235.3 109.5 L123.6 308.2 L155.7 305.4 L110.7 245.6 L96.7 227.7 L65.8 267.7 L80.5 283.0 L125.3 340.5 L143.7 364.9 L158.5 338.1 L270.2 138.8 L281.8 117.8 L247.0 87.9 Z' fill='white'/></svg>");
}
.ltx_listing_button.error::after {
opacity: 1;
/* error icon */
background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 359 444'><circle cx='179.5' cy='222' r='178.3' fill='%23c33641'/><line x1='110.3' y1='138.3' x2='245.6' y2='305.4' stroke='white' stroke-linecap='square' stroke-width='56.1'/><line x1='247.0' y1='136.0' x2='111.6' y2='303.7' stroke='white' stroke-linecap='square' stroke-width='56.1'/></svg>");
}
.ltx_listing_button.success::before,
.ltx_listing_button.error::before {
opacity: 0;
}
39 changes: 39 additions & 0 deletions lib/LaTeXML/resources/javascript/lstlisting.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,39 @@
// replace download links in lstlisting environments by copy to clipboard button
// requires images/copy.svg and images/ok.svg
// (c) Christoph Hauert 2025

function copy2clip(button) {
try {
// temporarily hide line numbers in code listing
const style = document.createElement('style');
document.head.appendChild(style);
const styleSheet = style.sheet;
var hideLine = styleSheet.insertRule(".ltx_tag_listingline { display: none; }");
var hideCopy = styleSheet.insertRule(".ltx_listing_data { display: none; }");
const textToCopy = button.parentNode.parentNode.parentNode.innerText;
navigator.clipboard.writeText(textToCopy);
styleSheet.deleteRule(hideCopy);
styleSheet.deleteRule(hideLine);
button.classList.remove("error");
button.classList.add("success");
} catch (e) {
button.classList.remove("success");
button.classList.add("error");
}
setTimeout(() => {
button.classList.remove("success", "error");
}, 1200);
}

window.addEventListener("load", () => {
const elements = document.getElementsByClassName("ltx_listing_data");
const copyButton = '<div class="ltx_listing_copy2clip">' +
'<button class="ltx_listing_button" onclick="copy2clip(this)" title="Copy to clipboard">' +
'</button></div>';
Array.from(elements).forEach(el => {
if (el.firstChild) {
el.removeChild(el.firstChild);
}
el.insertAdjacentHTML('afterbegin', copyButton);
});
});
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