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GitHub Code Colors

A userscript that adds a color swatch next to the code color definition

目前為 2021-01-31 提交的版本，檢視 最新版本。

  1. // ==UserScript==
  2. // @name        GitHub Code Colors
  3. // @version     2.0.5
  4. // @description A userscript that adds a color swatch next to the code color definition
  5. // @license     MIT
  6. // @author      Rob Garrison
  7. // @namespace   https://github.com/Mottie
  8. // @include     https://github.com/*
  9. // @run-at      document-idle
  10. // @grant       GM.addStyle
  11. // @grant       GM_addStyle
  12. // @require     https://greasemonkey.github.io/gm4-polyfill/gm4-polyfill.js?updated=20180103
  13. // @require     https://greasyfork.org/scripts/28721-mutations/code/mutations.js?version=882023
  14. // @require     https://greasyfork.org/scripts/387811-color-bundle/code/color-bundle.js?version=719499
  15. // @icon        https://github.githubassets.com/pinned-octocat.svg
  16. // ==/UserScript==
  17. /* global GM Color */
  18. (() => {
  19. 	"use strict";
  20.  
  21. 	// whitespace:initial => overrides code-wrap css in content
  22. 	GM.addStyle(`
  23. 	.ghcc-block { width:14px; height:14px; display:inline-block;
  24. 		vertical-align:middle; margin-right:4px; border-radius:4px;
  25. 		border:1px solid rgba(119, 119, 119, 0.5); position:relative;
  26. 		background-image:none; cursor:pointer; }
  27. 	.ghcc-popup { position:absolute; background:#222; color:#eee;
  28. 		min-width:350px; top:100%; left:0px; padding:10px; z-index:100;
  29. 		white-space:pre; cursor:text; text-align:left; -webkit-user-select:text;
  30. 		-moz-user-select:text; -ms-user-select:text; user-select:text; }
  31. 	.markdown-body .highlight pre, .markdown-body pre {
  32. 		overflow-y:visible !important; }
  33. 	.ghcc-copy { padding:2px 6px; margin-right:4px; background:transparent;
  34. 		border:0; }`);
  35.  
  36. 	const namedColors = Object.keys(Color.namedColors);
  37. 	const namedColorsList = namedColors.reduce((acc, name) => {
  38. 		acc[name] = `rgb(${Color.namedColors[name].join(", ")})`;
  39. 		return acc;
  40. 	}, {});
  41.  
  42. 	const copyButton = document.createElement("clipboard-copy");
  43. 	copyButton.className = "btn btn-sm btn-blue tooltipped tooltipped-w ghcc-copy";
  44. 	copyButton.setAttribute("aria-label", "Copy to clipboard");
  45. 	// This hint isn't working yet (GitHub needs to fix it)
  46. 	copyButton.setAttribute("data-copied-hint", "Copied!");
  47. 	copyButton.innerHTML = `
  48. 		<svg aria-hidden="true" class="octicon octicon-clippy" height="14" viewBox="0 0 14 16" width="14">
  49. 			<path fill-rule="evenodd" d="M2 13h4v1H2v-1zm5-6H2v1h5V7zm2 3V8l-3 3 3 3v-2h5v-2H9zM4.5 9H2v1h2.5V9zM2 12h2.5v-1H2v1zm9 1h1v2c-.02.28-.11.52-.3.7-.19.18-.42.28-.7.3H1c-.55 0-1-.45-1-1V4c0-.55.45-1 1-1h3c0-1.11.89-2 2-2 1.11 0 2 .89 2 2h3c.55 0 1 .45 1 1v5h-1V6H1v9h10v-2zM2 5h8c0-.55-.45-1-1-1H8c-.55 0-1-.45-1-1s-.45-1-1-1-1 .45-1 1-.45 1-1 1H3c-.55 0-1 .45-1 1z"></path>
  50. 		</svg>`;
  51.  
  52. 	// Misc regex
  53. 	const regex = {
  54. 		quotes: /['"]/g,
  55. 		unix: /^0x/,
  56. 		percent: /%%/g
  57. 	};
  58.  
  59. 	// Don't use a div, because GitHub-Dark adds a :hover background
  60. 	// color definition on divs
  61. 	const block = document.createElement("button");
  62. 	block.className = "ghcc-block";
  63. 	block.tabIndex = 0;
  64. 	// prevent submitting on click in comment preview
  65. 	block.type = "button";
  66. 	block.onclick = "event => event.stopPropagation()";
  67.  
  68. 	const br = document.createElement("br");
  69.  
  70. 	const popup = document.createElement("span");
  71. 	popup.className = "ghcc-popup";
  72.  
  73. 	const formats = {
  74. 		named: {
  75. 			regex: new RegExp("^(" + namedColors.join("|") + ")$", "i"),
  76. 			convert: color => {
  77. 				const rgb = color.rgb().toString();
  78. 				if (Object.values(namedColorsList).includes(rgb)) {
  79. 					// There may be more than one named color
  80. 					// e.g. "slategray" & "slategrey"
  81. 					return Object.keys(namedColorsList)
  82. 						.filter(n => namedColorsList[n] === rgb)
  83. 						.join("<br />");
  84. 				}
  85. 				return "";
  86. 			},
  87. 		},
  88. 		hex: {
  89. 			// Ex: #123, #123456 or 0x123456 (unix style colors, used by three.js)
  90. 			regex: /^(#|0x)([0-9A-F]{6,8}|[0-9A-F]{3,4})$/i,
  91. 			convert: color => `${color.hex().toString()}`,
  92. 		},
  93. 		rgb: {
  94. 			regex: /^rgba?(\([^\)]+\))?/i,
  95. 			regexAlpha: /rgba/i,
  96. 			find: (els, el, txt) => {
  97. 				// Color in a string contains everything
  98. 				if (el.classList.contains("pl-s")) {
  99. 					txt = txt.match(formats.rgb.regex)[0];
  100. 				} else {
  101. 					// Rgb(a) colors contained in multiple "pl-c1" spans
  102. 					let indx = formats.rgb.regexAlpha.test(txt) ? 4 : 3;
  103. 					const tmp = [];
  104. 					while (indx) {
  105. 						tmp.push(getTextContent(els.shift()));
  106. 						indx--;
  107. 					}
  108. 					txt += "(" + tmp.join(",") + ")";
  109. 				}
  110. 				addNode(el, txt);
  111. 				return els;
  112. 			},
  113. 			convert: color => {
  114. 				const rgb = color.rgb().alpha(1).toString();
  115. 				const rgba = color.rgb().toString();
  116. 				return `${rgb}${rgb === rgba ? "" : "; " + rgba}`;
  117. 			}
  118. 		},
  119. 		hsl: {
  120. 			// Ex: hsl(0,0%,0%) or hsla(0,0%,0%,0.2);
  121. 			regex: /^hsla?(\([^\)]+\))?/i,
  122. 			find: (els, el, txt) => {
  123. 				const tmp = /a$/i.test(txt);
  124. 				if (el.classList.contains("pl-s")) {
  125. 					// Color in a string contains everything
  126. 					txt = txt.match(formats.hsl.regex)[0];
  127. 				} else {
  128. 					// Traverse this HTML... & els only contains the pl-c1 nodes
  129. 					// <span class="pl-c1">hsl</span>(<span class="pl-c1">1</span>,
  130. 					// <span class="pl-c1">1</span><span class="pl-k">%</span>,
  131. 					// <span class="pl-c1">1</span><span class="pl-k">%</span>);
  132. 					// using getTextContent in case of invalid css
  133. 					txt = txt + "(" + getTextContent(els.shift()) + "," +
  134. 						getTextContent(els.shift()) + "%," +
  135. 						// Hsla needs one more parameter
  136. 						getTextContent(els.shift()) + "%" +
  137. 						(tmp ? "," + getTextContent(els.shift()) : "") + ")";
  138. 				}
  139. 				// Sometimes (previews only?) the .pl-k span is nested inside
  140. 				// the .pl-c1 span, so we end up with "%%"
  141. 				addNode(el, txt.replace(regex.percent, "%"));
  142. 				return els;
  143. 			},
  144. 			convert: color => {
  145. 				const hsl = color.hsl().alpha(1).round().toString();
  146. 				const hsla = color.hsl().round().toString();
  147. 				return `${hsl}${hsl === hsla ? "" : "; " + hsla}`;
  148. 			}
  149. 		},
  150. 		hwb: {
  151. 			convert: color => color.hwb().round().toString()
  152. 		},
  153. 		cymk: {
  154. 			convert: color => {
  155. 				const cmyk = color.cmyk().round().array(); // array of numbers
  156. 				return `device-cmyk(${cmyk.shift()}, ${cmyk.join("%, ")})`;
  157. 			}
  158. 		},
  159. 	};
  160.  
  161. 	function showPopup(el) {
  162. 		const popup = createPopup(el.style.backgroundColor);
  163. 		el.appendChild(popup);
  164. 	}
  165.  
  166. 	function hidePopup(el) {
  167. 		el.textContent = "";
  168. 	}
  169.  
  170. 	function checkPopup(event) {
  171. 		const el = event.target;
  172. 		if (el && el.classList.contains("ghcc-block")) {
  173. 			if (event.type === "click") {
  174. 				if (el.textContent) {
  175. 					hidePopup(el)
  176. 				} else {
  177. 					showPopup(el);
  178. 				}
  179. 			}
  180. 		}
  181. 		if (event.type === "keyup" && event.key === "Escape") {
  182. 			// hide all popups
  183. 			[...document.querySelectorAll(".ghcc-block")].forEach(el => {
  184. 				el.textContent = "";
  185. 			});
  186. 		}
  187. 	}
  188.  
  189. 	function createPopup(val) {
  190. 		const color = Color(val);
  191. 		const el = popup.cloneNode();
  192. 		const fragment = document.createDocumentFragment();
  193. 		Object.keys(formats).forEach(type => {
  194. 			if (typeof formats[type].convert === "function") {
  195. 				const val = formats[type].convert(color);
  196. 				if (val) {
  197. 					const button = copyButton.cloneNode(true);
  198. 					button.value = val;
  199. 					fragment.appendChild(button);
  200. 					fragment.appendChild(document.createTextNode(val));
  201. 					fragment.appendChild(br.cloneNode());
  202. 				}
  203. 			}
  204. 		});
  205. 		el.appendChild(fragment);
  206. 		return el;
  207. 	}
  208.  
  209. 	function addNode(el, val) {
  210. 		const node = block.cloneNode();
  211. 		node.style.backgroundColor = val;
  212. 		// Don't add node if color is invalid
  213. 		if (node.style.backgroundColor !== "") {
  214. 			el.insertBefore(node, el.childNodes[0]);
  215. 		}
  216. 	}
  217.  
  218. 	function getTextContent(el) {
  219. 		return el ? el.textContent : "";
  220. 	}
  221.  
  222. 	// Loop with delay to allow user interaction
  223. 	function* addBlock(els) {
  224. 		let last = "";
  225. 		while (els.length) {
  226. 			let el = els.shift();
  227. 			let txt = el.textContent;
  228. 			if (
  229. 				// No swatch for JavaScript Math.tan
  230. 				last === "Math" ||
  231. 				// Ignore nested pl-c1 (see https://git.io/fNF3N)
  232. 				el.parentNode && el.parentNode.classList.contains("pl-c1")
  233. 			) {
  234. 				// noop
  235. 			} else if (!el.querySelector(".ghcc-block")) {
  236. 				if (el.classList.contains("pl-s")) {
  237. 					txt = txt.replace(regex.quotes, "");
  238. 				}
  239. 				if (formats.hex.regex.test(txt) || formats.named.regex.test(txt)) {
  240. 					addNode(el, txt.replace(regex.unix, "#"));
  241. 				} else if (formats.rgb.regex.test(txt)) {
  242. 					els = formats.rgb.find(els, el, txt);
  243. 				} else if (formats.hsl.regex.test(txt)) {
  244. 					els = formats.hsl.find(els, el, txt);
  245. 				}
  246. 			}
  247. 			last = txt;
  248. 			yield els;
  249. 		}
  250. 	}
  251.  
  252. 	function addColors() {
  253. 		if (document.querySelector(".highlight")) {
  254. 			let status;
  255. 			// .pl-c1 targets css hex colors, "rgb" and "hsl"
  256. 			const els = [...document.querySelectorAll(".pl-c1, .pl-s")];
  257. 			const iter = addBlock(els);
  258. 			const loop = () => {
  259. 				for (let i = 0; i < 40; i++) {
  260. 					status = iter.next();
  261. 				}
  262. 				if (!status.done) {
  263. 					requestAnimationFrame(loop);
  264. 				}
  265. 			};
  266. 			loop();
  267. 		}
  268. 	}
  269.  
  270. 	document.addEventListener("ghmo:container", addColors);
  271. 	document.addEventListener("ghmo:preview", addColors);
  272. 	document.addEventListener("click", checkPopup);
  273. 	document.addEventListener("keyup", checkPopup);
  274. 	addColors();
  275.  
  276. })();