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feat: introduce Expressive Code for code block rendering (#476)

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* feat: improve code block feature with Expressive Code

* docs: add example Markdown file for visual review

* feat: improve styles of Expressive Code

* fix: errors from the merging

* chore: formatting

* chore: update config

* chore: update dependencies

* fix: fix build error

* fix: minor fixes

* fix: style tweaks

* docs: update example post

* fix: isolate copy button timeouts to avoid cross-button interference

---------

Co-authored-by: Hasenpfote <Hasenpfote36@gmail.com>
This commit is contained in:
Saica
2025-06-03 22:41:36 +08:00
committed by GitHub
parent e640964e5e
commit ee48c2f09d
15 changed files with 1384 additions and 648 deletions
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90
src/plugins/expressive-code/custom-copy-button.ts Normal file
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import { definePlugin } from "@expressive-code/core";
import type { Element } from "hast";
export function pluginCustomCopyButton() {
return definePlugin({
name: "Custom Copy Button",
hooks: {
postprocessRenderedBlock: (context) => {
function traverse(node: Element) {
if (node.type === "element" && node.tagName === "pre") {
processCodeBlock(node);
return;
}
if (node.children) {
for (const child of node.children) {
if (child.type === "element") traverse(child);
}
}
}
function processCodeBlock(node: Element) {
const copyButton = {
type: "element" as const,
tagName: "button",
properties: {
className: ["copy-btn"],
"aria-label": "Copy code",
},
children: [
{
type: "element" as const,
tagName: "div",
properties: {
className: ["copy-btn-icon"],
},
children: [
{
type: "element" as const,
tagName: "svg",
properties: {
viewBox: "0 -960 960 960",
xmlns: "http://www.w3.org/2000/svg",
className: ["copy-btn-icon", "copy-icon"],
},
children: [
{
type: "element" as const,
tagName: "path",
properties: {
d: "M368.37-237.37q-34.48 0-58.74-24.26-24.26-24.26-24.26-58.74v-474.26q0-34.48 24.26-58.74 24.26-24.26 58.74-24.26h378.26q34.48 0 58.74 24.26 24.26 24.26 24.26 58.74v474.26q0 34.48-24.26 58.74-24.26 24.26-58.74 24.26H368.37Zm0-83h378.26v-474.26H368.37v474.26Zm-155 238q-34.48 0-58.74-24.26-24.26-24.26-24.26-58.74v-515.76q0-17.45 11.96-29.48 11.97-12.02 29.33-12.02t29.54 12.02q12.17 12.03 12.17 29.48v515.76h419.76q17.45 0 29.48 11.96 12.02 11.97 12.02 29.33t-12.02 29.54q-12.03 12.17-29.48 12.17H213.37Zm155-238v-474.26 474.26Z",
},
children: [],
},
],
},
{
type: "element" as const,
tagName: "svg",
properties: {
viewBox: "0 -960 960 960",
xmlns: "http://www.w3.org/2000/svg",
className: ["copy-btn-icon", "success-icon"],
},
children: [
{
type: "element" as const,
tagName: "path",
properties: {
d: "m389-377.13 294.7-294.7q12.58-12.67 29.52-12.67 16.93 0 29.61 12.67 12.67 12.68 12.67 29.53 0 16.86-12.28 29.14L419.07-288.41q-12.59 12.67-29.52 12.67-16.94 0-29.62-12.67L217.41-430.93q-12.67-12.68-12.79-29.45-.12-16.77 12.55-29.45 12.68-12.67 29.62-12.67 16.93 0 29.28 12.67L389-377.13Z",
},
children: [],
},
],
},
],
},
],
} as Element;
if (!node.children) {
node.children = [];
}
node.children.push(copyButton);
}
traverse(context.renderData.blockAst);
},
},
});
}

48
src/plugins/expressive-code/language-badge.ts Normal file
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/**
* Based on the discussion at https://github.com/expressive-code/expressive-code/issues/153#issuecomment-2282218684
*/
import { definePlugin } from "@expressive-code/core";
export function pluginLanguageBadge() {
return definePlugin({
name: "Language Badge",
baseStyles: ({ cssVar }) => `
[data-language]::before {
position: absolute;
z-index: 2;
right: 0.5rem;
top: 0.5rem;
padding: 0.1rem 0.5rem;
content: attr(data-language);
font-size: 0.75rem;
font-weight: bold;
text-transform: uppercase;
color: oklch(0.75 0.1 var(--hue));
background: oklch(0.33 0.035 var(--hue));
border-radius: 0.5rem;
pointer-events: none;
transition: opacity 0.3s;
opacity: 0;
}
.frame:not(.has-title):not(.is-terminal) {
@media (hover: none) {
& [data-language]::before {
opacity: 1;
margin-right: 3rem;
}
& [data-language]:active::before {
opacity: 0;
}
}
@media (hover: hover) {
& [data-language]::before {
opacity: 1;
}
&:hover [data-language]::before {
opacity: 0;
}
}
}
`,
});
}