☰

YouTube Viewfinding

Zoom, rotate & crop YouTube videos

  1. // ==UserScript==
  2. // @name        YouTube Viewfinding
  3. // @version     0.14
  4. // @description Zoom, rotate & crop YouTube videos
  5. // @author      Callum Latham
  6. // @namespace   https://gf.qytechs.cn/users/696211-ctl2
  7. // @license     GNU GPLv3
  8. // @compatible  chrome
  9. // @compatible  edge
  10. // @compatible  firefox Video dimensions affect page scrolling
  11. // @compatible  opera Video dimensions affect page scrolling
  12. // @match       *://www.youtube.com/*
  13. // @match       *://youtube.com/*
  14. // @require     https://update.gf.qytechs.cn/scripts/446506/1537901/%24Config.js
  15. // @grant       GM.setValue
  16. // @grant       GM.getValue
  17. // @grant       GM.deleteValue
  18. // ==/UserScript==
  19.  
  20. /* global $Config */
  21.  
  22. (() => {
  23. // Don't run in non-embed frames (e.g. stream chat frame)
  24. if (window.parent !== window && window.location.pathname.split('/')[1] !== 'embed') {
  25. 	return;
  26. }
  27.  
  28. const VAR_ZOOM = '--viewfind-zoom';
  29. const LIMITS = {none: 'None', static: 'Static', fit: 'Fit'};
  30.  
  31. const $config = new $Config(
  32. 	'VIEWFIND_TREE',
  33. 	(() => {
  34. 		const isCSSRule = (() => {
  35. 			const wrapper = document.createElement('style');
  36. 			const regex = /\s/g;
  37. 			
  38. 			return (property, text) => {
  39. 				const ruleText = `${property}:${text};`;
  40. 				
  41. 				document.head.appendChild(wrapper);
  42. 				wrapper.sheet.insertRule(`:not(*){${ruleText}}`);
  43. 				
  44. 				const [{style: {cssText}}] = wrapper.sheet.cssRules;
  45. 				
  46. 				wrapper.remove();
  47. 				
  48. 				return cssText.replaceAll(regex, '') === ruleText.replaceAll(regex, '') || `Must be a valid CSS ${property} rule`;
  49. 			};
  50. 		})();
  51. 		
  52. 		const getHideId = (() => {
  53. 			let id = -1;
  54. 			
  55. 			return () => ++id;
  56. 		})();
  57. 		
  58. 		const glowHideId = getHideId();
  59. 		
  60. 		return {
  61. 			get: (_, configs) => Object.assign(...configs),
  62. 			children: [
  63. 				{
  64. 					label: 'Controls',
  65. 					children: [
  66. 						{
  67. 							label: 'Keybinds',
  68. 							descendantPredicate: (children) => {
  69. 								const isMatch = ({children: a}, {children: b}) => {
  70. 									if (a.length !== b.length) {
  71. 										return false;
  72. 									}
  73. 									
  74. 									return a.every(({value: keyA}) => b.some(({value: keyB}) => keyA === keyB));
  75. 								};
  76. 								
  77. 								for (let i = 1; i < children.length; ++i) {
  78. 									if (children.slice(i).some((child) => isMatch(children[i - 1], child))) {
  79. 										return 'Another action has this key combination';
  80. 									}
  81. 								}
  82. 								
  83. 								return true;
  84. 							},
  85. 							get: (_, configs) => ({keys: Object.assign(...configs)}),
  86. 							children: (() => {
  87. 								const seed = {
  88. 									value: '',
  89. 									listeners: {
  90. 										keydown: (event) => {
  91. 											switch (event.key) {
  92. 											case 'Enter':
  93. 											case 'Escape':
  94. 												return;
  95. 											}
  96. 											
  97. 											event.preventDefault();
  98. 											
  99. 											event.target.value = event.code;
  100. 											
  101. 											event.target.dispatchEvent(new InputEvent('input'));
  102. 										},
  103. 									},
  104. 								};
  105. 								
  106. 								const getKeys = (children) => new Set(children.map(({value}) => value));
  107. 								
  108. 								const getNode = (label, keys, get) => ({
  109. 									label,
  110. 									seed,
  111. 									children: keys.map((value) => ({...seed, value})),
  112. 									get,
  113. 								});
  114. 								
  115. 								return [
  116. 									{
  117. 										label: 'Actions',
  118. 										get: (_, [toggle, ...controls]) => Object.assign(...controls.map(({id, keys}) => ({
  119. 											[id]: {
  120. 												toggle,
  121. 												keys,
  122. 											},
  123. 										}))),
  124. 										children: [
  125. 											{
  126. 												label: 'Toggle?',
  127. 												value: false,
  128. 												get: ({value}) => value,
  129. 											},
  130. 											...[
  131. 												['Pan / Zoom', ['KeyZ'], 'pan'],
  132. 												['Rotate', ['IntlBackslash'], 'rotate'],
  133. 												['Crop', ['KeyZ', 'IntlBackslash'], 'crop'],
  134. 											].map(([label, keys, id]) => getNode(label, keys, ({children}) => ({id, keys: getKeys(children)}))),
  135. 										],
  136. 									},
  137. 									getNode('Reset', ['KeyX'], ({children}) => ({reset: {keys: getKeys(children)}})),
  138. 									getNode('Configure', ['AltLeft', 'KeyX'], ({children}) => ({config: {keys: getKeys(children)}})),
  139. 								];
  140. 							})(),
  141. 						},
  142. 						{
  143. 							label: 'Scroll Speeds',
  144. 							get: (_, configs) => ({speeds: Object.assign(...configs)}),
  145. 							children: [
  146. 								{
  147. 									label: 'Zoom',
  148. 									value: -100,
  149. 									get: ({value}) => ({zoom: value / 150000}),
  150. 								},
  151. 								{
  152. 									label: 'Rotate',
  153. 									value: -100,
  154. 									// 150000 * (5 - 0.8) / 2π ≈ 100000
  155. 									get: ({value}) => ({rotate: value / 100000}),
  156. 								},
  157. 								{
  158. 									label: 'Crop',
  159. 									value: -100,
  160. 									get: ({value}) => ({crop: value / 300000}),
  161. 								},
  162. 							],
  163. 						},
  164. 						{
  165. 							label: 'Drag Inversions',
  166. 							get: (_, configs) => ({multipliers: Object.assign(...configs)}),
  167. 							children: [
  168. 								['Pan', 'pan'],
  169. 								['Rotate', 'rotate'],
  170. 								['Crop', 'crop'],
  171. 							].map(([label, key, value = false]) => ({
  172. 								label,
  173. 								value,
  174. 								get: ({value}) => ({[key]: value ? -1 : 1}),
  175. 							})),
  176. 						},
  177. 						{
  178. 							label: 'Click Movement Allowance (px)',
  179. 							value: 2,
  180. 							predicate: (value) => value >= 0 || 'Allowance must be positive',
  181. 							inputAttributes: {min: 0},
  182. 							get: ({value: clickCutoff}) => ({clickCutoff}),
  183. 						},
  184. 					],
  185. 				},
  186. 				{
  187. 					label: 'Behaviour',
  188. 					children: [
  189. 						...(() => {
  190. 							const typeNode = {
  191. 								label: 'Type',
  192. 								get: ({value}) => ({type: value}),
  193. 							};
  194. 							
  195. 							const staticNode = {
  196. 								label: 'Value (%)',
  197. 								predicate: (value) => value >= 0 || 'Limit must be positive',
  198. 								inputAttributes: {min: 0},
  199. 								get: ({value}) => ({custom: value / 100}),
  200. 							};
  201. 							
  202. 							const fitNode = {
  203. 								label: 'Glow Allowance (%)',
  204. 								predicate: (value) => value >= 0 || 'Allowance must be positive',
  205. 								inputAttributes: {min: 0},
  206. 								get: ({value}) => ({frame: value / 100}),
  207. 							};
  208. 							
  209. 							const options = Object.values(LIMITS);
  210. 							
  211. 							const getNode = (label, key, value, customValue, glowAllowance = 300) => {
  212. 								const staticId = getHideId();
  213. 								const fitId = getHideId();
  214. 								const onUpdate = (value) => ({
  215. 									hide: {
  216. 										[staticId]: value !== LIMITS.static,
  217. 										[fitId]: value !== LIMITS.fit,
  218. 									},
  219. 								});
  220. 								
  221. 								return {
  222. 									label,
  223. 									get: (_, configs) => ({[key]: Object.assign(...configs)}),
  224. 									children: [
  225. 										{...typeNode, value, options, onUpdate},
  226. 										{...staticNode, value: customValue, hideId: staticId},
  227. 										{...fitNode, value: glowAllowance, hideId: fitId},
  228. 									],
  229. 								};
  230. 							};
  231. 							
  232. 							return [
  233. 								getNode('Zoom In Limit', 'zoomInLimit', LIMITS.static, 500, 0),
  234. 								getNode('Zoom Out Limit', 'zoomOutLimit', LIMITS.static, 80),
  235. 								getNode('Pan Limit', 'panLimit', LIMITS.static, 50),
  236. 								{
  237. 									label: 'Snap Pan Limit',
  238. 									get: (_, configs) => ({snapPanLimit: Object.assign(...configs)}),
  239. 									children: ((hideId) => [
  240. 										{
  241. 											...typeNode,
  242. 											value: LIMITS.fit,
  243. 											options: [LIMITS.none, LIMITS.fit],
  244. 											onUpdate: (value) => ({hide: {[hideId]: value !== LIMITS.fit}}),
  245. 										},
  246. 										{...fitNode, value: 0, hideId},
  247. 									])(getHideId()),
  248. 								},
  249. 							];
  250. 						})(),
  251. 						{
  252. 							label: 'While Viewfinding',
  253. 							get: (_, configs) => {
  254. 								const {overlayKill, overlayHide, ...config} = Object.assign(...configs);
  255. 								
  256. 								return {
  257. 									active: {
  258. 										overlayRule: overlayKill && [overlayHide ? 'display' : 'pointer-events', 'none'],
  259. 										...config,
  260. 									},
  261. 								};
  262. 							},
  263. 							children: [
  264. 								{
  265. 									label: 'Pause Video?',
  266. 									value: false,
  267. 									get: ({value: pause}) => ({pause}),
  268. 								},
  269. 								{
  270. 									label: 'Hide Glow?',
  271. 									value: false,
  272. 									get: ({value: hideGlow}) => ({hideGlow}),
  273. 									hideId: glowHideId,
  274. 								},
  275. 								...((hideId) => [
  276. 									{
  277. 										label: 'Disable Overlay?',
  278. 										value: true,
  279. 										get: ({value: overlayKill}, configs) => Object.assign({overlayKill}, ...configs),
  280. 										onUpdate: (value) => ({hide: {[hideId]: !value}}),
  281. 										children: [
  282. 											{
  283. 												label: 'Hide Overlay?',
  284. 												value: false,
  285. 												get: ({value: overlayHide}) => ({overlayHide}),
  286. 												hideId,
  287. 											},
  288. 										],
  289. 									},
  290. 								])(getHideId()),
  291. 							],
  292. 						},
  293. 						
  294. 					],
  295. 				},
  296. 				{
  297. 					label: 'Glow',
  298. 					value: true,
  299. 					onUpdate: (value) => ({hide: {[glowHideId]: !value}}),
  300. 					get: ({value: on}, configs) => {
  301. 						if (!on) {
  302. 							return {};
  303. 						}
  304. 						
  305. 						const {turnover, ...config} = Object.assign(...configs);
  306. 						const sampleCount = Math.floor(config.fps * turnover);
  307. 						
  308. 						// avoid taking more samples than there's space for
  309. 						if (sampleCount > config.size) {
  310. 							const fps = config.size / turnover;
  311. 							
  312. 							return {
  313. 								glow: {
  314. 									...config,
  315. 									sampleCount: config.size,
  316. 									interval: 1000 / fps,
  317. 									fps,
  318. 								},
  319. 							};
  320. 						}
  321. 						
  322. 						return {
  323. 							glow: {
  324. 								...config,
  325. 								interval: 1000 / config.fps,
  326. 								sampleCount,
  327. 							},
  328. 						};
  329. 					},
  330. 					children: [
  331. 						(() => {
  332. 							const [seed, getChild] = (() => {
  333. 								const options = ['blur', 'brightness', 'contrast', 'drop-shadow', 'grayscale', 'hue-rotate', 'invert', 'opacity', 'saturate', 'sepia'];
  334. 								const ids = {};
  335. 								const hide = {};
  336. 								
  337. 								for (const option of options) {
  338. 									ids[option] = getHideId();
  339. 									
  340. 									hide[ids[option]] = true;
  341. 								}
  342. 								
  343. 								const min0Amount = {
  344. 									label: 'Amount (%)',
  345. 									value: 100,
  346. 									predicate: (value) => value >= 0 || 'Amount must be positive',
  347. 									inputAttributes: {min: 0},
  348. 								};
  349. 								
  350. 								const max100Amount = {
  351. 									label: 'Amount (%)',
  352. 									value: 0,
  353. 									predicate: (value) => {
  354. 										if (value < 0) {
  355. 											return 'Amount must be positive';
  356. 										}
  357. 										
  358. 										return value <= 100 || 'Amount may not exceed 100%';
  359. 									},
  360. 									inputAttributes: {min: 0, max: 100},
  361. 								};
  362. 								
  363. 								const getScaled = (value) => `calc(${value}px/var(${VAR_ZOOM}))`;
  364. 								
  365. 								const root = {
  366. 									label: 'Function',
  367. 									options,
  368. 									value: options[0],
  369. 									get: ({value}, configs) => {
  370. 										const config = Object.assign(...configs);
  371. 										
  372. 										switch (value) {
  373. 										case options[0]:
  374. 											return {
  375. 												filter: config.blurScale ? `blur(${config.blur}px)` : `blur(${getScaled(config.blur)})`,
  376. 												blur: {
  377. 													x: config.blur,
  378. 													y: config.blur,
  379. 													scale: config.blurScale,
  380. 												},
  381. 											};
  382. 										
  383. 										case options[3]:
  384. 											return {
  385. 												filter: config.shadowScale ?
  386. 													`drop-shadow(${config.shadow} ${config.shadowX}px ${config.shadowY}px ${config.shadowSpread}px)` :
  387. 													`drop-shadow(${config.shadow} ${getScaled(config.shadowX)} ${getScaled(config.shadowY)} ${getScaled(config.shadowSpread)})`,
  388. 												blur: {
  389. 													x: config.shadowSpread + Math.abs(config.shadowX),
  390. 													y: config.shadowSpread + Math.abs(config.shadowY),
  391. 													scale: config.shadowScale,
  392. 												},
  393. 											};
  394. 										
  395. 										case options[5]:
  396. 											return {filter: `hue-rotate(${config.hueRotate}deg)`};
  397. 										}
  398. 										
  399. 										return {filter: `${value}(${config[value]}%)`};
  400. 									},
  401. 									onUpdate: (value) => ({hide: {...hide, [ids[value]]: false}}),
  402. 								};
  403. 								
  404. 								const children = {
  405. 									'blur': [
  406. 										{
  407. 											label: 'Distance (px)',
  408. 											value: 0,
  409. 											get: ({value}) => ({blur: value}),
  410. 											predicate: (value) => value >= 0 || 'Distance must be positive',
  411. 											inputAttributes: {min: 0},
  412. 											hideId: ids.blur,
  413. 										},
  414. 										{
  415. 											label: 'Scale?',
  416. 											value: false,
  417. 											get: ({value}) => ({blurScale: value}),
  418. 											hideId: ids.blur,
  419. 										},
  420. 									],
  421. 									'brightness': [
  422. 										{
  423. 											...min0Amount,
  424. 											hideId: ids.brightness,
  425. 											get: ({value}) => ({brightness: value}),
  426. 										},
  427. 									],
  428. 									'contrast': [
  429. 										{
  430. 											...min0Amount,
  431. 											hideId: ids.contrast,
  432. 											get: ({value}) => ({contrast: value}),
  433. 										},
  434. 									],
  435. 									'drop-shadow': [
  436. 										{
  437. 											label: 'Colour',
  438. 											input: 'color',
  439. 											value: '#FFFFFF',
  440. 											get: ({value}) => ({shadow: value}),
  441. 											hideId: ids['drop-shadow'],
  442. 										},
  443. 										{
  444. 											label: 'Horizontal Offset (px)',
  445. 											value: 0,
  446. 											get: ({value}) => ({shadowX: value}),
  447. 											hideId: ids['drop-shadow'],
  448. 										},
  449. 										{
  450. 											label: 'Vertical Offset (px)',
  451. 											value: 0,
  452. 											get: ({value}) => ({shadowY: value}),
  453. 											hideId: ids['drop-shadow'],
  454. 										},
  455. 										{
  456. 											label: 'Spread (px)',
  457. 											value: 0,
  458. 											predicate: (value) => value >= 0 || 'Spread must be positive',
  459. 											inputAttributes: {min: 0},
  460. 											get: ({value}) => ({shadowSpread: value}),
  461. 											hideId: ids['drop-shadow'],
  462. 										},
  463. 										{
  464. 											label: 'Scale?',
  465. 											value: true,
  466. 											get: ({value}) => ({shadowScale: value}),
  467. 											hideId: ids['drop-shadow'],
  468. 										},
  469. 									],
  470. 									'grayscale': [
  471. 										{
  472. 											...max100Amount,
  473. 											hideId: ids.grayscale,
  474. 											get: ({value}) => ({grayscale: value}),
  475. 										},
  476. 									],
  477. 									'hue-rotate': [
  478. 										{
  479. 											label: 'Angle (deg)',
  480. 											value: 0,
  481. 											get: ({value}) => ({hueRotate: value}),
  482. 											hideId: ids['hue-rotate'],
  483. 										},
  484. 									],
  485. 									'invert': [
  486. 										{
  487. 											...max100Amount,
  488. 											hideId: ids.invert,
  489. 											get: ({value}) => ({invert: value}),
  490. 										},
  491. 									],
  492. 									'opacity': [
  493. 										{
  494. 											...max100Amount,
  495. 											value: 100,
  496. 											hideId: ids.opacity,
  497. 											get: ({value}) => ({opacity: value}),
  498. 										},
  499. 									],
  500. 									'saturate': [
  501. 										{
  502. 											...min0Amount,
  503. 											hideId: ids.saturate,
  504. 											get: ({value}) => ({saturate: value}),
  505. 										},
  506. 									],
  507. 									'sepia': [
  508. 										{
  509. 											...max100Amount,
  510. 											hideId: ids.sepia,
  511. 											get: ({value}) => ({sepia: value}),
  512. 										},
  513. 									],
  514. 								};
  515. 								
  516. 								return [
  517. 									{...root, children: Object.values(children).flat()}, (id, ...values) => {
  518. 										const replacements = [];
  519. 										
  520. 										for (const [i, child] of children[id].entries()) {
  521. 											replacements.push({...child, value: values[i]});
  522. 										}
  523. 										
  524. 										return {
  525. 											...root,
  526. 											value: id,
  527. 											children: Object.values({...children, [id]: replacements}).flat(),
  528. 										};
  529. 									},
  530. 								];
  531. 							})();
  532. 							
  533. 							return {
  534. 								label: 'Filter',
  535. 								get: (_, configs) => {
  536. 									const scaled = {x: 0, y: 0};
  537. 									const unscaled = {x: 0, y: 0};
  538. 									
  539. 									let filter = '';
  540. 									
  541. 									for (const config of configs) {
  542. 										filter += config.filter;
  543. 										
  544. 										if ('blur' in config) {
  545. 											const target = config.blur.scale ? scaled : unscaled;
  546. 											
  547. 											target.x = Math.max(target.x, config.blur.x);
  548. 											target.y = Math.max(target.y, config.blur.y);
  549. 										}
  550. 									}
  551. 									
  552. 									return {filter, blur: {scaled, unscaled}};
  553. 								},
  554. 								children: [
  555. 									getChild('saturate', 150),
  556. 									getChild('brightness', 150),
  557. 									getChild('blur', 25, false),
  558. 								],
  559. 								seed,
  560. 							};
  561. 						})(),
  562. 						{
  563. 							label: 'Update',
  564. 							childPredicate: ([{value: fps}, {value: turnover}]) => fps * turnover >= 1 || `${turnover} second turnover cannot be achieved at ${fps} hertz`,
  565. 							children: [
  566. 								{
  567. 									label: 'Frequency (Hz)',
  568. 									value: 15,
  569. 									predicate: (value) => {
  570. 										if (value > 144) {
  571. 											return 'Update frequency may not be above 144 hertz';
  572. 										}
  573. 										
  574. 										return value >= 0 || 'Update frequency must be positive';
  575. 									},
  576. 									inputAttributes: {min: 0, max: 144},
  577. 									get: ({value: fps}) => ({fps}),
  578. 								},
  579. 								{
  580. 									label: 'Turnover Time (s)',
  581. 									value: 3,
  582. 									predicate: (value) => value >= 0 || 'Turnover time must be positive',
  583. 									inputAttributes: {min: 0},
  584. 									get: ({value: turnover}) => ({turnover}),
  585. 								},
  586. 								{
  587. 									label: 'Reverse?',
  588. 									value: false,
  589. 									get: ({value: doFlip}) => ({doFlip}),
  590. 								},
  591. 							],
  592. 						},
  593. 						{
  594. 							label: 'Size (px)',
  595. 							value: 50,
  596. 							predicate: (value) => value >= 0 || 'Size must be positive',
  597. 							inputAttributes: {min: 0},
  598. 							get: ({value}) => ({size: value}),
  599. 						},
  600. 						{
  601. 							label: 'End Point (%)',
  602. 							value: 103,
  603. 							predicate: (value) => value >= 0 || 'End point must be positive',
  604. 							inputAttributes: {min: 0},
  605. 							get: ({value}) => ({end: value / 100}),
  606. 						},
  607. 					].map((node) => ({...node, hideId: glowHideId})),
  608. 				},
  609. 				{
  610. 					label: 'Interfaces',
  611. 					children: [
  612. 						{
  613. 							label: 'Crop',
  614. 							get: (_, configs) => ({crop: Object.assign(...configs)}),
  615. 							children: [
  616. 								{
  617. 									label: 'Colours',
  618. 									get: (_, configs) => ({colour: Object.assign(...configs)}),
  619. 									children: [
  620. 										{
  621. 											label: 'Fill',
  622. 											get: (_, [colour, opacity]) => ({fill: `${colour}${opacity}`}),
  623. 											children: [
  624. 												{
  625. 													label: 'Colour',
  626. 													value: '#808080',
  627. 													input: 'color',
  628. 													get: ({value}) => value,
  629. 												},
  630. 												{
  631. 													label: 'Opacity (%)',
  632. 													value: 40,
  633. 													predicate: (value) => {
  634. 														if (value < 0) {
  635. 															return 'Opacity must be positive';
  636. 														}
  637. 														
  638. 														return value <= 100 || 'Opacity may not exceed 100%';
  639. 													},
  640. 													inputAttributes: {min: 0, max: 100},
  641. 													get: ({value}) => Math.round(255 * value / 100).toString(16),
  642. 												},
  643. 											],
  644. 										},
  645. 										{
  646. 											label: 'Shadow',
  647. 											value: '#000000',
  648. 											input: 'color',
  649. 											get: ({value: shadow}) => ({shadow}),
  650. 										},
  651. 										{
  652. 											label: 'Border',
  653. 											value: '#ffffff',
  654. 											input: 'color',
  655. 											get: ({value: border}) => ({border}),
  656. 										},
  657. 									],
  658. 								},
  659. 								{
  660. 									label: 'Handle Size (%)',
  661. 									value: 6,
  662. 									predicate: (value) => {
  663. 										if (value < 0) {
  664. 											return 'Size must be positive';
  665. 										}
  666. 										
  667. 										return value <= 50 || 'Size may not exceed 50%';
  668. 									},
  669. 									inputAttributes: {min: 0, max: 50},
  670. 									get: ({value}) => ({handle: value / 100}),
  671. 								},
  672. 							],
  673. 						},
  674. 						{
  675. 							label: 'Crosshair',
  676. 							get: (value, configs) => ({crosshair: Object.assign(...configs)}),
  677. 							children: [
  678. 								{
  679. 									label: 'Outer Thickness (px)',
  680. 									value: 3,
  681. 									predicate: (value) => value >= 0 || 'Thickness must be positive',
  682. 									inputAttributes: {min: 0},
  683. 									get: ({value: outer}) => ({outer}),
  684. 								},
  685. 								{
  686. 									label: 'Inner Thickness (px)',
  687. 									value: 1,
  688. 									predicate: (value) => value >= 0 || 'Thickness must be positive',
  689. 									inputAttributes: {min: 0},
  690. 									get: ({value: inner}) => ({inner}),
  691. 								},
  692. 								{
  693. 									label: 'Inner Diameter (px)',
  694. 									value: 157,
  695. 									predicate: (value) => value >= 0 || 'Diameter must be positive',
  696. 									inputAttributes: {min: 0},
  697. 									get: ({value: gap}) => ({gap}),
  698. 								},
  699. 								((hideId) => ({
  700. 									label: 'Text',
  701. 									value: true,
  702. 									onUpdate: (value) => ({hide: {[hideId]: !value}}),
  703. 									get: ({value}, configs) => {
  704. 										if (!value) {
  705. 											return {};
  706. 										}
  707. 										
  708. 										const {translateX, translateY, ...config} = Object.assign(...configs);
  709. 										
  710. 										return {
  711. 											text: {
  712. 												translate: {
  713. 													x: translateX,
  714. 													y: translateY,
  715. 												},
  716. 												...config,
  717. 											},
  718. 										};
  719. 									},
  720. 									children: [
  721. 										{
  722. 											label: 'Font',
  723. 											value: '30px "Harlow Solid", cursive',
  724. 											predicate: isCSSRule.bind(null, 'font'),
  725. 											get: ({value: font}) => ({font}),
  726. 										},
  727. 										{
  728. 											label: 'Position (%)',
  729. 											get: (_, configs) => ({position: Object.assign(...configs)}),
  730. 											children: ['x', 'y'].map((label) => ({
  731. 												label,
  732. 												value: 0,
  733. 												predicate: (value) => Math.abs(value) <= 50 || 'Position must be on-screen',
  734. 												inputAttributes: {min: -50, max: 50},
  735. 												get: ({value}) => ({[label]: value + 50}),
  736. 											})),
  737. 										},
  738. 										{
  739. 											label: 'Offset (px)',
  740. 											get: (_, configs) => ({offset: Object.assign(...configs)}),
  741. 											children: [
  742. 												{
  743. 													label: 'x',
  744. 													value: -6,
  745. 													get: ({value: x}) => ({x}),
  746. 												},
  747. 												{
  748. 													label: 'y',
  749. 													value: -25,
  750. 													get: ({value: y}) => ({y}),
  751. 												},
  752. 											],
  753. 										},
  754. 										(() => {
  755. 											const options = ['Left', 'Center', 'Right'];
  756. 											
  757. 											return {
  758. 												label: 'Alignment',
  759. 												value: options[2],
  760. 												options,
  761. 												get: ({value}) => ({align: value.toLowerCase(), translateX: options.indexOf(value) * -50}),
  762. 											};
  763. 										})(),
  764. 										(() => {
  765. 											const options = ['Top', 'Middle', 'Bottom'];
  766. 											
  767. 											return {
  768. 												label: 'Baseline',
  769. 												value: options[0],
  770. 												options,
  771. 												get: ({value}) => ({translateY: options.indexOf(value) * -50}),
  772. 											};
  773. 										})(),
  774. 										{
  775. 											label: 'Line height (%)',
  776. 											value: 90,
  777. 											predicate: (value) => value >= 0 || 'Height must be positive',
  778. 											inputAttributes: {min: 0},
  779. 											get: ({value}) => ({height: value / 100}),
  780. 										},
  781. 									].map((node) => ({...node, hideId})),
  782. 								}))(getHideId()),
  783. 								{
  784. 									label: 'Colours',
  785. 									get: (_, configs) => ({colour: Object.assign(...configs)}),
  786. 									children: [
  787. 										{
  788. 											label: 'Fill',
  789. 											value: '#ffffff',
  790. 											input: 'color',
  791. 											get: ({value: fill}) => ({fill}),
  792. 										},
  793. 										{
  794. 											label: 'Shadow',
  795. 											value: '#000000',
  796. 											input: 'color',
  797. 											get: ({value: shadow}) => ({shadow}),
  798. 										},
  799. 									],
  800. 								},
  801. 							],
  802. 						},
  803. 					],
  804. 				},
  805. 			],
  806. 		};
  807. 	})(),
  808. 	{
  809. 		headBase: '#c80000',
  810. 		headButtonExit: '#000000',
  811. 		borderHead: '#ffffff',
  812. 		borderTooltip: '#c80000',
  813. 		width: Math.min(90, screen.width / 16),
  814. 		height: 90,
  815. 	},
  816. 	{
  817. 		zIndex: 10000,
  818. 		scrollbarColor: 'initial',
  819. 	},
  820. );
  821.  
  822. const CLASS_VIEWFINDER = 'viewfind-element';
  823. const PI_HALVES = [Math.PI / 2, Math.PI, 3 * Math.PI / 2, Math.PI * 2];
  824. const SELECTOR_VIDEO = '#movie_player video.html5-main-video';
  825.  
  826. // STATE
  827.  
  828. let video;
  829. let altTarget;
  830. let viewport;
  831. let cinematics;
  832.  
  833. let stopped = true;
  834. let stopDrag;
  835.  
  836. const viewportAngles = new function () {
  837. 	this.set = () => {
  838. 		this.side = getTheta(0, 0, viewport.clientWidth, viewport.clientHeight);
  839. 		
  840. 		// equals `getTheta(0, 0, viewport.clientHeight, viewport.clientWidth)`
  841. 		this.base = PI_HALVES[0] - this.side;
  842. 		
  843. 		glow.handleViewChange(true);
  844. 	};
  845. }();
  846.  
  847. // ROTATION HELPERS
  848.  
  849. const getTheta = (fromX, fromY, toX, toY) => Math.atan2(toY - fromY, toX - fromX);
  850.  
  851. const getRotatedCorners = (x, y) => {
  852. 	const angle = rotation.value - PI_HALVES[0];
  853. 	const radius = Math.sqrt(x * x + y * y);
  854. 	
  855. 	const topAngle = getTheta(0, 0, x, y) + angle;
  856. 	const bottomAngle = getTheta(0, 0, x, -y) + angle;
  857. 	
  858. 	return [
  859. 		{
  860. 			x: Math.abs(radius * Math.cos(topAngle)),
  861. 			y: Math.abs(radius * Math.sin(topAngle)),
  862. 		},
  863. 		{
  864. 			x: Math.abs(radius * Math.cos(bottomAngle)),
  865. 			y: Math.abs(radius * Math.sin(bottomAngle)),
  866. 		},
  867. 	];
  868. };
  869.  
  870. // CSS HELPER
  871.  
  872. const css = new function () {
  873. 	this.has = (name) => document.body.classList.contains(name);
  874. 	this.tag = (name, doAdd = true) => document.body.classList[doAdd ? 'add' : 'remove'](name);
  875. 	
  876. 	this.getSelector = (...classes) => `body.${classes.join('.')}`;
  877. 	
  878. 	const getSheet = () => {
  879. 		const element = document.createElement('style');
  880. 		
  881. 		document.head.appendChild(element);
  882. 		
  883. 		return element.sheet;
  884. 	};
  885. 	
  886. 	const getRuleString = (selector, ...declarations) => `${selector}{${declarations.map(([property, value]) => `${property}:${value};`).join('')}}`;
  887. 	
  888. 	this.add = function (...rule) {
  889. 		this.insertRule(getRuleString(...rule));
  890. 	}.bind(getSheet());
  891. 	
  892. 	this.Toggleable = class {
  893. 		static sheet = getSheet();
  894. 		
  895. 		static active = [];
  896. 		
  897. 		static id = 0;
  898. 		
  899. 		static add(rule, id) {
  900. 			this.sheet.insertRule(rule, this.active.length);
  901. 			
  902. 			this.active.push(id);
  903. 		}
  904. 		
  905. 		static remove(id) {
  906. 			let index = this.active.indexOf(id);
  907. 			
  908. 			while (index >= 0) {
  909. 				this.sheet.deleteRule(index);
  910. 				
  911. 				this.active.splice(index, 1);
  912. 				
  913. 				index = this.active.indexOf(id);
  914. 			}
  915. 		}
  916. 		
  917. 		id = this.constructor.id++;
  918. 		
  919. 		add(...rule) {
  920. 			this.constructor.add(getRuleString(...rule), this.id);
  921. 		}
  922. 		
  923. 		remove() {
  924. 			this.constructor.remove(this.id);
  925. 		}
  926. 	};
  927. }();
  928.  
  929. // ACTION MANAGER
  930.  
  931. const enabler = new function () {
  932. 	this.CLASS_ABLE = 'viewfind-action-able';
  933. 	this.CLASS_DRAGGING = 'viewfind-action-dragging';
  934. 	
  935. 	this.keys = new Set();
  936. 	
  937. 	this.didPause = false;
  938. 	this.isHidingGlow = false;
  939. 	
  940. 	this.setActive = (action) => {
  941. 		const {active, keys} = $config.get();
  942. 		
  943. 		if (active.hideGlow && Boolean(action) !== this.isHidingGlow) {
  944. 			if (action) {
  945. 				this.isHidingGlow = true;
  946. 				
  947. 				glow.hide();
  948. 			} else if (this.isHidingGlow) {
  949. 				this.isHidingGlow = false;
  950. 				
  951. 				glow.show();
  952. 			}
  953. 		}
  954. 		
  955. 		this.activeAction?.onInactive?.();
  956. 		
  957. 		if (action) {
  958. 			this.activeAction = action;
  959. 			this.toggled = keys[action.CODE].toggle;
  960. 			
  961. 			action.onActive?.();
  962. 			
  963. 			if (active.pause && !video.paused) {
  964. 				video.pause();
  965. 				
  966. 				this.didPause = true;
  967. 			}
  968. 			
  969. 			return;
  970. 		}
  971. 		
  972. 		if (this.didPause) {
  973. 			video.play();
  974. 			
  975. 			this.didPause = false;
  976. 		}
  977. 		
  978. 		this.activeAction = this.toggled = undefined;
  979. 	};
  980. 	
  981. 	this.handleChange = () => {
  982. 		if (stopped || stopDrag || video.ended) {
  983. 			return;
  984. 		}
  985. 		
  986. 		const {keys} = $config.get();
  987. 		
  988. 		let activeAction;
  989. 		
  990. 		for (const action of Object.values(actions)) {
  991. 			if (
  992. 				!this.keys.isSupersetOf(keys[action.CODE].keys) || activeAction && ('toggle' in keys[action.CODE] ?
  993. 					!('toggle' in keys[activeAction.CODE]) || keys[activeAction.CODE].keys.size >= keys[action.CODE].keys.size :
  994. 					!('toggle' in keys[activeAction.CODE]) && keys[activeAction.CODE].keys.size >= keys[action.CODE].keys.size)
  995. 			) {
  996. 				if ('CLASS_ABLE' in action) {
  997. 					css.tag(action.CLASS_ABLE, false);
  998. 				}
  999. 				
  1000. 				continue;
  1001. 			}
  1002. 			
  1003. 			if (activeAction && 'CLASS_ABLE' in activeAction) {
  1004. 				css.tag(activeAction.CLASS_ABLE, false);
  1005. 			}
  1006. 			
  1007. 			activeAction = action;
  1008. 		}
  1009. 		
  1010. 		if (activeAction === this.activeAction) {
  1011. 			return;
  1012. 		}
  1013. 		
  1014. 		if (activeAction) {
  1015. 			if ('CLASS_ABLE' in activeAction) {
  1016. 				css.tag(activeAction.CLASS_ABLE);
  1017. 				
  1018. 				css.tag(this.CLASS_ABLE);
  1019. 				
  1020. 				this.setActive(activeAction);
  1021. 				
  1022. 				return;
  1023. 			}
  1024. 			
  1025. 			this.activeAction?.onInactive?.();
  1026. 			
  1027. 			activeAction.onActive();
  1028. 			
  1029. 			this.activeAction = activeAction;
  1030. 		}
  1031. 		
  1032. 		css.tag(this.CLASS_ABLE, false);
  1033. 		
  1034. 		this.setActive(false);
  1035. 	};
  1036. 	
  1037. 	this.stop = () => {
  1038. 		css.tag(this.CLASS_ABLE, false);
  1039. 		
  1040. 		for (const action of Object.values(actions)) {
  1041. 			if ('CLASS_ABLE' in action) {
  1042. 				css.tag(action.CLASS_ABLE, false);
  1043. 			}
  1044. 		}
  1045. 		
  1046. 		this.setActive(false);
  1047. 	};
  1048. 	
  1049. 	this.updateConfig = (() => {
  1050. 		const rule = new css.Toggleable();
  1051. 		const selector = `${css.getSelector(this.CLASS_ABLE)} #contentContainer.tp-yt-app-drawer[swipe-open]::after`
  1052. 			+ `,${css.getSelector(this.CLASS_ABLE)} #movie_player > .html5-video-container ~ :not(.${CLASS_VIEWFINDER})`;
  1053. 		
  1054. 		return () => {
  1055. 			const {overlayRule} = $config.get().active;
  1056. 			
  1057. 			rule.remove();
  1058. 			
  1059. 			if (overlayRule) {
  1060. 				rule.add(selector, overlayRule);
  1061. 			}
  1062. 		};
  1063. 	})();
  1064. 	
  1065. 	$config.ready.then(() => {
  1066. 		this.updateConfig();
  1067. 	});
  1068. 	
  1069. 	// insertion order decides priority
  1070. 	css.add(`${css.getSelector(this.CLASS_DRAGGING)} #movie_player`, ['cursor', 'grabbing']);
  1071. 	css.add(`${css.getSelector(this.CLASS_ABLE)} #movie_player`, ['cursor', 'grab']);
  1072. }();
  1073.  
  1074. // ELEMENT CONTAINER SETUP
  1075.  
  1076. const containers = new function () {
  1077. 	for (const name of ['background', 'foreground', 'tracker']) {
  1078. 		this[name] = document.createElement('div');
  1079. 		
  1080. 		this[name].classList.add(CLASS_VIEWFINDER);
  1081. 	}
  1082. 	
  1083. 	// make an outline of the uncropped video
  1084. 	css.add(`${css.getSelector(enabler.CLASS_ABLE)} #${this.foreground.id = 'viewfind-outlined'}`, ['outline', '1px solid white']);
  1085. 	
  1086. 	this.background.style.position = this.foreground.style.position = 'absolute';
  1087. 	this.background.style.pointerEvents = this.foreground.style.pointerEvents = this.tracker.style.pointerEvents = 'none';
  1088. 	this.tracker.style.height = this.tracker.style.width = '100%';
  1089. }();
  1090.  
  1091. // MODIFIERS
  1092.  
  1093. class Cache {
  1094. 	targets = [];
  1095. 	
  1096. 	constructor(...targets) {
  1097. 		for (const source of targets) {
  1098. 			this.targets.push({source});
  1099. 		}
  1100. 	}
  1101. 	
  1102. 	update(target) {
  1103. 		return target.value !== (target.value = target.source.value);
  1104. 	}
  1105. 	
  1106. 	isStale() {
  1107. 		return this.targets.reduce((value, target) => value || this.update(target), false);
  1108. 	}
  1109. }
  1110.  
  1111. class ConfigCache extends Cache {
  1112. 	static id = 0;
  1113. 	
  1114. 	id = this.constructor.id;
  1115. 	
  1116. 	constructor(...targets) {
  1117. 		super(...targets);
  1118. 	}
  1119. 	
  1120. 	isStale() {
  1121. 		if (this.id === (this.id = this.constructor.id)) {
  1122. 			return super.isStale();
  1123. 		}
  1124. 		
  1125. 		for (const target of this.targets) {
  1126. 			target.value = target.source.value;
  1127. 		}
  1128. 		
  1129. 		return true;
  1130. 	}
  1131. }
  1132.  
  1133. const zoom = new function () {
  1134. 	this.value = 1;
  1135. 	
  1136. 	const scaleRule = new css.Toggleable();
  1137. 	
  1138. 	this.reset = () => {
  1139. 		this.value = 1;
  1140. 		
  1141. 		video.style.removeProperty('scale');
  1142. 		
  1143. 		scaleRule.remove();
  1144. 		scaleRule.add(':root', [VAR_ZOOM, '1']);
  1145. 	};
  1146. 	
  1147. 	this.apply = () => {
  1148. 		video.style.setProperty('scale', `${this.value}`);
  1149. 		
  1150. 		scaleRule.remove();
  1151. 		scaleRule.add(':root', [VAR_ZOOM, `${this.value}`]);
  1152. 		
  1153. 		delete actions.reset.restore;
  1154. 	};
  1155. 	
  1156. 	this.getFit = (width = 1, height = 1) => {
  1157. 		const [corner0, corner1] = getRotatedCorners(width * video.clientWidth, height * video.clientHeight);
  1158. 		
  1159. 		return 1 / Math.max(
  1160. 			corner0.x / viewport.clientWidth, corner1.x / viewport.clientWidth,
  1161. 			corner0.y / viewport.clientHeight, corner1.y / viewport.clientHeight,
  1162. 		);
  1163. 	};
  1164. 	
  1165. 	this.constrain = (() => {
  1166. 		const limitGetters = {
  1167. 			[LIMITS.static]: ({custom}) => custom,
  1168. 			[LIMITS.fit]: ({frame}, glow) => {
  1169. 				if (glow) {
  1170. 					const base = glow.end - 1;
  1171. 					const {scaled, unscaled} = glow.blur;
  1172. 					
  1173. 					return this.getFit(
  1174. 						1 + Math.max(0, base + Math.max(unscaled.x / video.clientWidth, scaled.x * this.value / video.clientWidth)) * frame,
  1175. 						1 + Math.max(0, base + Math.max(unscaled.y / video.clientHeight, scaled.y * this.value / video.clientHeight)) * frame,
  1176. 					);
  1177. 				}
  1178. 				
  1179. 				return this.getFit();
  1180. 			},
  1181. 		};
  1182. 		
  1183. 		return () => {
  1184. 			const {zoomOutLimit, zoomInLimit, glow} = $config.get();
  1185. 			
  1186. 			if (zoomOutLimit.type !== 'None') {
  1187. 				this.value = Math.max(limitGetters[zoomOutLimit.type](zoomOutLimit, glow), this.value);
  1188. 			}
  1189. 			
  1190. 			if (zoomInLimit.type !== 'None') {
  1191. 				this.value = Math.min(limitGetters[zoomInLimit.type](zoomInLimit, glow), this.value);
  1192. 			}
  1193. 			
  1194. 			this.apply();
  1195. 		};
  1196. 	})();
  1197. }();
  1198.  
  1199. const rotation = new function () {
  1200. 	this.value = PI_HALVES[0];
  1201. 	
  1202. 	this.reset = () => {
  1203. 		this.value = PI_HALVES[0];
  1204. 		
  1205. 		video.style.removeProperty('rotate');
  1206. 	};
  1207. 	
  1208. 	this.apply = () => {
  1209. 		// Conversion from anticlockwise rotation from the x-axis to clockwise rotation from the y-axis
  1210. 		video.style.setProperty('rotate', `${PI_HALVES[0] - this.value}rad`);
  1211. 		
  1212. 		delete actions.reset.restore;
  1213. 	};
  1214. 	
  1215. 	// dissimilar from other constrain functions in that no effective limit is applied
  1216. 	// -1.5π < rotation <= 0.5π
  1217. 	// 0 <= 0.5π - rotation < 2π
  1218. 	this.constrain = () => {
  1219. 		this.value %= PI_HALVES[3];
  1220. 		
  1221. 		if (this.value > PI_HALVES[0]) {
  1222. 			this.value -= PI_HALVES[3];
  1223. 		} else if (this.value <= -PI_HALVES[2]) {
  1224. 			this.value += PI_HALVES[3];
  1225. 		}
  1226. 		
  1227. 		this.apply();
  1228. 	};
  1229. }();
  1230.  
  1231. const position = new function () {
  1232. 	this.x = this.y = 0;
  1233. 	
  1234. 	this.getValues = () => ({x: this.x, y: this.y});
  1235. 	
  1236. 	this.reset = () => {
  1237. 		this.x = this.y = 0;
  1238. 		
  1239. 		video.style.removeProperty('translate');
  1240. 	};
  1241. 	
  1242. 	this.apply = () => {
  1243. 		video.style.setProperty('transform-origin', `${(0.5 + this.x) * 100}% ${(0.5 - this.y) * 100}%`);
  1244. 		video.style.setProperty('translate', `${-this.x * 100}% ${this.y * 100}%`);
  1245. 		
  1246. 		delete actions.reset.restore;
  1247. 	};
  1248. 	
  1249. 	this.constrain = (() => {
  1250. 		const applyFrameValues = (lowCorner, highCorner, sub, main) => {
  1251. 			this[sub] = Math.max(-lowCorner[sub], Math.min(highCorner[sub], this[sub]));
  1252. 			
  1253. 			const progress = (this[sub] + lowCorner[sub]) / (highCorner[sub] + lowCorner[sub]);
  1254. 			
  1255. 			if (this[main] < 0) {
  1256. 				const bound = Number.isNaN(progress) ?
  1257. 					-lowCorner[main] :
  1258. 					(lowCorner[main] - highCorner[main]) * progress - lowCorner[main];
  1259. 				
  1260. 				this[main] = Math.max(this[main], bound);
  1261. 			} else {
  1262. 				const bound = Number.isNaN(progress) ?
  1263. 					lowCorner[main] :
  1264. 					(highCorner[main] - lowCorner[main]) * progress + lowCorner[main];
  1265. 				
  1266. 				this[main] = Math.min(this[main], bound);
  1267. 			}
  1268. 		};
  1269. 		
  1270. 		const applyFrame = (firstCorner, secondCorner, firstCornerAngle, secondCornerAngle) => {
  1271. 			// The anti-clockwise angle from the first (top left) corner
  1272. 			const midPointAngle = (getTheta(0, 0, this.x, this.y) + PI_HALVES[1] + firstCornerAngle) % PI_HALVES[3];
  1273. 			
  1274. 			if (midPointAngle % PI_HALVES[1] < secondCornerAngle) {
  1275. 				// Frame is x-bound
  1276. 				const [lowCorner, highCorner] = this.x >= 0 ? [firstCorner, secondCorner] : [secondCorner, firstCorner];
  1277. 				
  1278. 				applyFrameValues(lowCorner, highCorner, 'y', 'x');
  1279. 			} else {
  1280. 				// Frame is y-bound
  1281. 				const [lowCorner, highCorner] = this.y >= 0 ? [firstCorner, secondCorner] : [secondCorner, firstCorner];
  1282. 				
  1283. 				applyFrameValues(lowCorner, highCorner, 'x', 'y');
  1284. 			}
  1285. 		};
  1286. 		
  1287. 		const getBoundApplyFrame = (() => {
  1288. 			const getCorner = (first, second) => {
  1289. 				if (zoom.value < first.z) {
  1290. 					return {x: 0, y: 0};
  1291. 				}
  1292. 				
  1293. 				if (zoom.value < second.z) {
  1294. 					const progress = (1 / zoom.value - 1 / first.z) / (1 / second.z - 1 / first.z);
  1295. 					
  1296. 					return {
  1297. 						x: Math.max(0, progress * (second.x - first.x) + first.x),
  1298. 						y: Math.max(0, progress * (second.y - first.y) + first.y),
  1299. 					};
  1300. 				}
  1301. 				
  1302. 				return {
  1303. 					x: Math.max(0, 0.5 - (0.5 - second.x) / (zoom.value / second.z)),
  1304. 					y: Math.max(0, 0.5 - (0.5 - second.y) / (zoom.value / second.z)),
  1305. 				};
  1306. 			};
  1307. 			
  1308. 			return (first0, second0, first1, second1) => {
  1309. 				const fFirstCorner = getCorner(first0, second0);
  1310. 				const fSecondCorner = getCorner(first1, second1);
  1311. 				
  1312. 				const fFirstCornerAngle = getTheta(0, 0, fFirstCorner.x, fFirstCorner.y);
  1313. 				const fSecondCornerAngle = fFirstCornerAngle + getTheta(0, 0, fSecondCorner.x, fSecondCorner.y);
  1314. 				
  1315. 				for (const [same, different] of [['x', 'y'], ['y', 'x']]) {
  1316. 					if (fFirstCorner[same] === 0 && fSecondCorner[same] === 0) {
  1317. 						if (fFirstCorner[different] > fSecondCorner[different]) {
  1318. 							return applyFrame.bind(null, fFirstCorner, fFirstCorner, fFirstCornerAngle, fFirstCornerAngle);
  1319. 						}
  1320. 						
  1321. 						return applyFrame.bind(null, fSecondCorner, fSecondCorner, fSecondCornerAngle, fSecondCornerAngle);
  1322. 					}
  1323. 				}
  1324. 				
  1325. 				return applyFrame.bind(null, fFirstCorner, fSecondCorner, fFirstCornerAngle, fSecondCornerAngle);
  1326. 			};
  1327. 		})();
  1328. 		
  1329. 		// https://math.stackexchange.com/questions/2223691/intersect-2-lines-at-the-same-ratio-through-a-point
  1330. 		const snapZoom = (() => {
  1331. 			const isAbove = (x, y, m, c) => m * x + c < y;
  1332. 			
  1333. 			const getPSecond = (low, high) => 1 - low / high;
  1334. 			const getPFirst = (low, high, target) => (target - low) / (high - low);
  1335. 			
  1336. 			const getProgressed = (p, [fromX, fromY], [toX, toY]) => [p * (toX - fromX) + fromX, p * (toY - fromY) + fromY];
  1337. 			
  1338. 			const getFlipped = (first, second, flipX, flipY) => {
  1339. 				const flippedFirst = [];
  1340. 				const flippedSecond = [];
  1341. 				const corner = [];
  1342. 				
  1343. 				if (flipX) {
  1344. 					flippedFirst[0] = -first.x;
  1345. 					flippedSecond[0] = -second.x;
  1346. 					corner[0] = -0.5;
  1347. 				} else {
  1348. 					flippedFirst[0] = first.x;
  1349. 					flippedSecond[0] = second.x;
  1350. 					corner[0] = 0.5;
  1351. 				}
  1352. 				
  1353. 				if (flipY) {
  1354. 					flippedFirst[1] = -first.y;
  1355. 					flippedSecond[1] = -second.y;
  1356. 					corner[1] = -0.5;
  1357. 				} else {
  1358. 					flippedFirst[1] = first.y;
  1359. 					flippedSecond[1] = second.y;
  1360. 					corner[1] = 0.5;
  1361. 				}
  1362. 				
  1363. 				return [flippedFirst, flippedSecond, corner];
  1364. 			};
  1365. 			
  1366. 			const getIntersectPSecond = ([[g, e], [f, d]], [[k, i], [j, h]], doFlip) => {
  1367. 				const x = Math.abs(position.x);
  1368. 				const y = Math.abs(position.y);
  1369. 				
  1370. 				const a = d * j - d * k - j * e + e * k - h * f + h * g + i * f - i * g;
  1371. 				const b = d * k - d * x - e * k + e * x + j * e - k * e - j * y + k * y - h * g + h * x + i * g - i * x - f * i + g * i + f * y - g * y;
  1372. 				const c = k * e - e * x - k * y - g * i + i * x + g * y;
  1373. 				
  1374. 				return (doFlip ? -b - Math.sqrt(b * b - 4 * a * c) : -b + Math.sqrt(b * b - 4 * a * c)) / (2 * a);
  1375. 			};
  1376. 			
  1377. 			const applyZoomPairSecond = ([z, ...pair], doFlip) => {
  1378. 				const p = getIntersectPSecond(...pair, doFlip);
  1379. 				
  1380. 				if (p >= 0) {
  1381. 					zoom.value = p >= 1 ? Number.MAX_SAFE_INTEGER : z / (1 - p);
  1382. 					
  1383. 					return true;
  1384. 				}
  1385. 				
  1386. 				return false;
  1387. 			};
  1388. 			
  1389. 			const applyZoomPairFirst = ([z0, z1, ...pair], doFlip) => {
  1390. 				const p = getIntersectPSecond(...pair, doFlip);
  1391. 				
  1392. 				if (p >= 0) {
  1393. 					zoom.value = p * (z1 - z0) + z0;
  1394. 					
  1395. 					return true;
  1396. 				}
  1397. 				
  1398. 				return false;
  1399. 			};
  1400. 			
  1401. 			return (first0, second0, first1, second1) => {
  1402. 				const getPairings = (flipX0, flipY0, flipX1, flipY1) => {
  1403. 					const [flippedFirst0, flippedSecond0, corner0] = getFlipped(first0, second0, flipX0, flipY0);
  1404. 					const [flippedFirst1, flippedSecond1, corner1] = getFlipped(first1, second1, flipX1, flipY1);
  1405. 					
  1406. 					if (second0.z > second1.z) {
  1407. 						const progressedHigh = getProgressed(getPSecond(second1.z, second0.z), flippedSecond1, corner1);
  1408. 						const pairHigh = [
  1409. 							second0.z,
  1410. 							[flippedSecond0, corner0],
  1411. 							[progressedHigh, corner1],
  1412. 						];
  1413. 						
  1414. 						if (second1.z > first0.z) {
  1415. 							const progressedLow = getProgressed(getPFirst(first0.z, second0.z, second1.z), flippedFirst0, flippedSecond0);
  1416. 							
  1417. 							return [
  1418. 								pairHigh,
  1419. 								[
  1420. 									second1.z,
  1421. 									second0.z,
  1422. 									[progressedLow, flippedSecond0],
  1423. 									[flippedSecond1, progressedHigh],
  1424. 								],
  1425. 							];
  1426. 						}
  1427. 						
  1428. 						const progressedLow = getProgressed(getPSecond(second1.z, first0.z), flippedSecond1, corner1);
  1429. 						
  1430. 						return [
  1431. 							pairHigh,
  1432. 							[
  1433. 								first0.z,
  1434. 								second0.z,
  1435. 								[flippedFirst0, flippedSecond0],
  1436. 								[progressedLow, progressedHigh],
  1437. 							],
  1438. 						];
  1439. 					}
  1440. 					
  1441. 					const progressedHigh = getProgressed(getPSecond(second0.z, second1.z), flippedSecond0, corner0);
  1442. 					const pairHigh = [
  1443. 						second1.z,
  1444. 						[progressedHigh, corner0],
  1445. 						[flippedSecond1, corner1],
  1446. 					];
  1447. 					
  1448. 					if (second0.z > first1.z) {
  1449. 						const progressedLow = getProgressed(getPFirst(first1.z, second1.z, second0.z), flippedFirst1, flippedSecond1);
  1450. 						
  1451. 						return [
  1452. 							pairHigh,
  1453. 							[
  1454. 								second0.z,
  1455. 								second1.z,
  1456. 								[progressedLow, flippedSecond1],
  1457. 								[flippedSecond0, progressedHigh],
  1458. 							],
  1459. 						];
  1460. 					}
  1461. 					
  1462. 					const progressedLow = getProgressed(getPSecond(second0.z, first1.z), flippedSecond0, corner0);
  1463. 					
  1464. 					return [
  1465. 						pairHigh,
  1466. 						[
  1467. 							first1.z,
  1468. 							second1.z,
  1469. 							[flippedFirst1, flippedSecond1],
  1470. 							[progressedLow, progressedHigh],
  1471. 						],
  1472. 					];
  1473. 				};
  1474. 				
  1475. 				const [pair0, pair1, doFlip = false] = (() => {
  1476. 					const doInvert = position.x >= 0 === position.y < 0;
  1477. 					
  1478. 					if (doInvert) {
  1479. 						const m = (second0.y - 0.5) / (second0.x - 0.5);
  1480. 						const c = 0.5 - m * 0.5;
  1481. 						
  1482. 						if (isAbove(Math.abs(position.x), Math.abs(position.y), m, c)) {
  1483. 							return [...getPairings(false, false, true, false), true];
  1484. 						}
  1485. 						
  1486. 						return getPairings(false, false, false, true);
  1487. 					}
  1488. 					
  1489. 					const m = (second1.y - 0.5) / (second1.x - 0.5);
  1490. 					const c = 0.5 - m * 0.5;
  1491. 					
  1492. 					if (isAbove(Math.abs(position.x), Math.abs(position.y), m, c)) {
  1493. 						return getPairings(true, false, false, false);
  1494. 					}
  1495. 					
  1496. 					return [...getPairings(false, true, false, false), true];
  1497. 				})();
  1498. 				
  1499. 				if (applyZoomPairSecond(pair0, doFlip) || applyZoomPairFirst(pair1, doFlip)) {
  1500. 					return;
  1501. 				}
  1502. 				
  1503. 				zoom.value = pair1[0];
  1504. 			};
  1505. 		})();
  1506. 		
  1507. 		const getZoomPoints = (mod) => {
  1508. 			const [videoWidth, videoHeight] = (() => {
  1509. 				const {glow} = $config.get();
  1510. 				
  1511. 				if (glow) {
  1512. 					const {scaled, unscaled} = glow.blur;
  1513. 					
  1514. 					return [
  1515. 						(video.clientWidth + Math.max(0, glow.end * video.clientWidth - video.clientWidth + Math.max(unscaled.x, scaled.x * zoom.value)) * mod) / 2,
  1516. 						(video.clientHeight + Math.max(0, glow.end * video.clientHeight - video.clientHeight + Math.max(unscaled.y, scaled.y * zoom.value)) * mod) / 2,
  1517. 					];
  1518. 				}
  1519. 				
  1520. 				return [video.clientWidth / 2, video.clientHeight / 2];
  1521. 			})();
  1522. 			
  1523. 			const viewportWidth = viewport.clientWidth / 2;
  1524. 			const viewportHeight = viewport.clientHeight / 2;
  1525. 			
  1526. 			const quadrant = Math.floor(rotation.value / PI_HALVES[0]) + 3;
  1527. 			
  1528. 			// the angle from 0,0 to the center of the video edge angled towards the viewport's upper-right corner
  1529. 			const quadrantAngle = (() => {
  1530. 				const angle = (rotation.value + PI_HALVES[3]) % PI_HALVES[0];
  1531. 				
  1532. 				return quadrant % 2 === 0 ? angle : PI_HALVES[0] - angle;
  1533. 			})();
  1534. 			
  1535. 			const progress = quadrantAngle / PI_HALVES[0] * -2 + 1;
  1536. 			
  1537. 			const progressAngles = {
  1538. 				base: Math.atan(progress * viewportWidth / viewportHeight),
  1539. 				side: Math.atan(progress * viewportHeight / viewportWidth),
  1540. 			};
  1541. 			
  1542. 			const progressCosines = {
  1543. 				base: Math.cos(progressAngles.base),
  1544. 				side: Math.cos(progressAngles.side),
  1545. 			};
  1546. 			
  1547. 			const [baseCorners, sideCorners] = [
  1548. 				[
  1549. 					((cornerAngle) => ({
  1550. 						x: (videoWidth - videoHeight * Math.tan(cornerAngle)) / video.clientWidth,
  1551. 						y: 0,
  1552. 						z: viewportHeight / (progressCosines.base * Math.abs(videoHeight / Math.cos(cornerAngle))),
  1553. 					}))(progressAngles.base + quadrantAngle),
  1554. 					
  1555. 					((cornerAngle) => ({
  1556. 						x: 0,
  1557. 						y: (videoHeight - videoWidth * Math.tan(cornerAngle)) / video.clientHeight,
  1558. 						z: viewportHeight / (progressCosines.base * Math.abs(videoWidth / Math.cos(cornerAngle))),
  1559. 					}))(PI_HALVES[0] - progressAngles.base - quadrantAngle),
  1560. 				],
  1561. 				[
  1562. 					((cornerAngle) => ({
  1563. 						x: 0,
  1564. 						y: (videoHeight - videoWidth * Math.tan(cornerAngle)) / video.clientHeight,
  1565. 						z: viewportWidth / (progressCosines.side * Math.abs(videoWidth / Math.cos(cornerAngle))),
  1566. 					}))(progressAngles.side + quadrantAngle),
  1567. 					
  1568. 					((cornerAngle) => ({
  1569. 						x: (videoWidth - videoHeight * Math.tan(cornerAngle)) / video.clientWidth,
  1570. 						y: 0,
  1571. 						z: viewportWidth / (progressCosines.side * Math.abs(videoHeight / Math.cos(cornerAngle))),
  1572. 					}))(PI_HALVES[0] - progressAngles.side - quadrantAngle),
  1573. 				],
  1574. 			// ascending order by zoom
  1575. 			].map(([xCorner, yCorner]) => xCorner.z < yCorner.z ? [xCorner, yCorner] : [yCorner, xCorner]);
  1576. 			
  1577. 			return quadrant % 2 === 1 ? [...baseCorners, ...sideCorners] : [...sideCorners, ...baseCorners];
  1578. 		};
  1579. 		
  1580. 		const handlers = {
  1581. 			[LIMITS.static]: ({custom: ratio}) => {
  1582. 				const bound = 0.5 + (ratio - 0.5) / zoom.value;
  1583. 				
  1584. 				position.x = Math.max(-bound, Math.min(bound, position.x));
  1585. 				position.y = Math.max(-bound, Math.min(bound, position.y));
  1586. 			},
  1587. 			[LIMITS.fit]: (() => {
  1588. 				const cache = new ConfigCache(rotation, zoom);
  1589. 				
  1590. 				let boundApplyFrame;
  1591. 				
  1592. 				return ({frame}) => {
  1593. 					if (cache.isStale()) {
  1594. 						boundApplyFrame = getBoundApplyFrame(...getZoomPoints(frame));
  1595. 					}
  1596. 					
  1597. 					boundApplyFrame();
  1598. 				};
  1599. 			})(),
  1600. 		};
  1601. 		
  1602. 		const snapHandlers = {
  1603. 			[LIMITS.fit]: (() => {
  1604. 				const cache = new ConfigCache(rotation, zoom);
  1605. 				
  1606. 				let boundSnapZoom;
  1607. 				
  1608. 				return ({frame}) => {
  1609. 					if (cache.isStale()) {
  1610. 						boundSnapZoom = snapZoom.bind(null, ...getZoomPoints(frame));
  1611. 					}
  1612. 					
  1613. 					boundSnapZoom();
  1614. 					
  1615. 					zoom.constrain();
  1616. 				};
  1617. 			})(),
  1618. 		};
  1619. 		
  1620. 		return (doZoom = false) => {
  1621. 			const {panLimit, snapPanLimit} = $config.get();
  1622. 			
  1623. 			if (doZoom) {
  1624. 				snapHandlers[snapPanLimit.type]?.(snapPanLimit);
  1625. 			}
  1626. 			
  1627. 			handlers[panLimit.type]?.(panLimit);
  1628. 			
  1629. 			this.apply();
  1630. 		};
  1631. 	})();
  1632. }();
  1633.  
  1634. const crop = new function () {
  1635. 	this.top = this.right = this.bottom = this.left = 0;
  1636. 	
  1637. 	this.getValues = () => ({top: this.top, right: this.right, bottom: this.bottom, left: this.left});
  1638. 	
  1639. 	this.reveal = () => {
  1640. 		this.top = this.right = this.bottom = this.left = 0;
  1641. 		
  1642. 		rule.remove();
  1643. 	};
  1644. 	
  1645. 	this.reset = () => {
  1646. 		this.reveal();
  1647. 		
  1648. 		actions.crop.reset();
  1649. 	};
  1650. 	
  1651. 	const rule = new css.Toggleable();
  1652. 	
  1653. 	this.apply = () => {
  1654. 		rule.remove();
  1655. 		rule.add(
  1656. 			`${SELECTOR_VIDEO}:not(.${this.CLASS_ABLE} *)`,
  1657. 			['clip-path', `inset(${this.top * 100}% ${this.right * 100}% ${this.bottom * 100}% ${this.left * 100}%)`],
  1658. 		);
  1659. 		
  1660. 		delete actions.reset.restore;
  1661. 		
  1662. 		glow.handleViewChange();
  1663. 		glow.reset();
  1664. 	};
  1665. 	
  1666. 	this.getDimensions = (width = video.clientWidth, height = video.clientHeight) => [
  1667. 		width * (1 - this.left - this.right),
  1668. 		height * (1 - this.top - this.bottom),
  1669. 	];
  1670. }();
  1671.  
  1672. // FUNCTIONALITY
  1673.  
  1674. const glow = (() => {
  1675. 	const videoCanvas = new OffscreenCanvas(0, 0);
  1676. 	const videoCtx = videoCanvas.getContext('2d', {alpha: false});
  1677. 	
  1678. 	const glowCanvas = document.createElement('canvas');
  1679. 	const glowCtx = glowCanvas.getContext('2d', {alpha: false});
  1680. 	
  1681. 	glowCanvas.style.setProperty('position', 'absolute');
  1682. 	
  1683. 	class Sector {
  1684. 		canvas = new OffscreenCanvas(0, 0);
  1685. 		ctx = this.canvas.getContext('2d', {alpha: false});
  1686. 		
  1687. 		update(doFill) {
  1688. 			if (doFill) {
  1689. 				this.fill();
  1690. 			} else {
  1691. 				this.shift();
  1692. 				this.take();
  1693. 			}
  1694. 			
  1695. 			this.giveEdge();
  1696. 			
  1697. 			if (this.hasCorners) {
  1698. 				this.giveCorners();
  1699. 			}
  1700. 		}
  1701. 	}
  1702. 	
  1703. 	class Side extends Sector {
  1704. 		setDimensions(doShiftRight, sWidth, sHeight, sx, sy, dx, dy, dWidth, dHeight) {
  1705. 			this.canvas.width = sWidth;
  1706. 			this.canvas.height = sHeight;
  1707. 			
  1708. 			this.shift = this.ctx.drawImage.bind(this.ctx, this.canvas, doShiftRight ? 1 : -1, 0);
  1709. 			
  1710. 			this.fill = this.ctx.drawImage.bind(this.ctx, videoCanvas, sx, sy, 1, sHeight, 0, 0, sWidth, sHeight);
  1711. 			this.take = this.ctx.drawImage.bind(this.ctx, videoCanvas, sx, sy, 1, sHeight, doShiftRight ? 0 : sWidth - 1, 0, 1, sHeight);
  1712. 			
  1713. 			this.giveEdge = glowCtx.drawImage.bind(glowCtx, this.canvas, 0, 0, sWidth, sHeight, dx, dy, dWidth, dHeight);
  1714. 			
  1715. 			if (dy === 0) {
  1716. 				this.hasCorners = false;
  1717. 				
  1718. 				return;
  1719. 			}
  1720. 			
  1721. 			this.hasCorners = true;
  1722. 			
  1723. 			const giveCorner0 = glowCtx.drawImage.bind(glowCtx, this.canvas, 0, 0, sWidth, 1, dx, 0, dWidth, dy);
  1724. 			const giveCorner1 = glowCtx.drawImage.bind(glowCtx, this.canvas, 0, sHeight - 1, sWidth, 1, dx, dy + dHeight, dWidth, dy);
  1725. 			
  1726. 			this.giveCorners = () => {
  1727. 				giveCorner0();
  1728. 				giveCorner1();
  1729. 			};
  1730. 		}
  1731. 	}
  1732. 	
  1733. 	class Base extends Sector {
  1734. 		setDimensions(doShiftDown, sWidth, sHeight, sx, sy, dx, dy, dWidth, dHeight) {
  1735. 			this.canvas.width = sWidth;
  1736. 			this.canvas.height = sHeight;
  1737. 			
  1738. 			this.shift = this.ctx.drawImage.bind(this.ctx, this.canvas, 0, doShiftDown ? 1 : -1);
  1739. 			
  1740. 			this.fill = this.ctx.drawImage.bind(this.ctx, videoCanvas, sx, sy, sWidth, 1, 0, 0, sWidth, sHeight);
  1741. 			this.take = this.ctx.drawImage.bind(this.ctx, videoCanvas, sx, sy, sWidth, 1, 0, doShiftDown ? 0 : sHeight - 1, sWidth, 1);
  1742. 			
  1743. 			this.giveEdge = glowCtx.drawImage.bind(glowCtx, this.canvas, 0, 0, sWidth, sHeight, dx, dy, dWidth, dHeight);
  1744. 			
  1745. 			if (dx === 0) {
  1746. 				this.hasCorners = false;
  1747. 				
  1748. 				return;
  1749. 			}
  1750. 			
  1751. 			this.hasCorners = true;
  1752. 			
  1753. 			const giveCorner0 = glowCtx.drawImage.bind(glowCtx, this.canvas, 0, 0, 1, sHeight, 0, dy, dx, dHeight);
  1754. 			const giveCorner1 = glowCtx.drawImage.bind(glowCtx, this.canvas, sWidth - 1, 0, 1, sHeight, dx + dWidth, dy, dx, dHeight);
  1755. 			
  1756. 			this.giveCorners = () => {
  1757. 				giveCorner0();
  1758. 				giveCorner1();
  1759. 			};
  1760. 		}
  1761. 		
  1762. 		setClipPath(points) {
  1763. 			this.clipPath = new Path2D();
  1764. 			
  1765. 			this.clipPath.moveTo(...points[0]);
  1766. 			this.clipPath.lineTo(...points[1]);
  1767. 			this.clipPath.lineTo(...points[2]);
  1768. 			this.clipPath.closePath();
  1769. 		}
  1770. 		
  1771. 		update(doFill) {
  1772. 			glowCtx.save();
  1773. 			
  1774. 			glowCtx.clip(this.clipPath);
  1775. 			
  1776. 			super.update(doFill);
  1777. 			
  1778. 			glowCtx.restore();
  1779. 		}
  1780. 	}
  1781. 	
  1782. 	const components = {
  1783. 		left: new Side(),
  1784. 		right: new Side(),
  1785. 		top: new Base(),
  1786. 		bottom: new Base(),
  1787. 	};
  1788. 	
  1789. 	const setComponentDimensions = (sampleCount, size, isInset, doFlip) => {
  1790. 		const [croppedWidth, croppedHeight] = crop.getDimensions();
  1791. 		const halfCanvas = {x: Math.ceil(glowCanvas.width / 2), y: Math.ceil(glowCanvas.height / 2)};
  1792. 		const halfVideo = {x: croppedWidth / 2, y: croppedHeight / 2};
  1793. 		const dWidth = Math.ceil(Math.min(halfVideo.x, size));
  1794. 		const dHeight = Math.ceil(Math.min(halfVideo.y, size));
  1795. 		const [dWidthScale, dHeightScale, sideWidth, sideHeight] = isInset ?
  1796. 			[0, 0, videoCanvas.width / croppedWidth * glowCanvas.width, videoCanvas.height / croppedHeight * glowCanvas.height] :
  1797. 			[halfCanvas.x - halfVideo.x, halfCanvas.y - halfVideo.y, croppedWidth, croppedHeight];
  1798. 		
  1799. 		components.left.setDimensions(!doFlip, sampleCount, videoCanvas.height, 0, 0, 0, dHeightScale, dWidth, sideHeight);
  1800. 		
  1801. 		components.right.setDimensions(doFlip, sampleCount, videoCanvas.height, videoCanvas.width - 1, 0, glowCanvas.width - dWidth, dHeightScale, dWidth, sideHeight);
  1802. 		
  1803. 		components.top.setDimensions(!doFlip, videoCanvas.width, sampleCount, 0, 0, dWidthScale, 0, sideWidth, dHeight);
  1804. 		components.top.setClipPath([[0, 0], [halfCanvas.x, halfCanvas.y], [glowCanvas.width, 0]]);
  1805. 		
  1806. 		components.bottom.setDimensions(doFlip, videoCanvas.width, sampleCount, 0, videoCanvas.height - 1, dWidthScale, glowCanvas.height - dHeight, sideWidth, dHeight);
  1807. 		components.bottom.setClipPath([[0, glowCanvas.height], [halfCanvas.x, halfCanvas.y], [glowCanvas.width, glowCanvas.height]]);
  1808. 	};
  1809. 	
  1810. 	class Instance {
  1811. 		constructor() {
  1812. 			const {filter, sampleCount, size, end, doFlip} = $config.get().glow;
  1813. 			
  1814. 			// Setup canvases
  1815. 			
  1816. 			glowCanvas.style.setProperty('filter', filter);
  1817. 			
  1818. 			[glowCanvas.width, glowCanvas.height] = crop.getDimensions().map((dimension) => dimension * end);
  1819. 			
  1820. 			glowCanvas.style.setProperty('left', `${crop.left * 100 + (1 - end) * (1 - crop.left - crop.right) * 50}%`);
  1821. 			glowCanvas.style.setProperty('top', `${crop.top * 100 + (1 - end) * (1 - crop.top - crop.bottom) * 50}%`);
  1822. 			
  1823. 			[videoCanvas.width, videoCanvas.height] = crop.getDimensions(video.videoWidth, video.videoHeight);
  1824. 			
  1825. 			setComponentDimensions(sampleCount, size, end <= 1, doFlip);
  1826. 			
  1827. 			this.update(true);
  1828. 		}
  1829. 		
  1830. 		update(doFill = false) {
  1831. 			videoCtx.drawImage(
  1832. 				video,
  1833. 				crop.left * video.videoWidth,
  1834. 				crop.top * video.videoHeight,
  1835. 				video.videoWidth * (1 - crop.left - crop.right),
  1836. 				video.videoHeight * (1 - crop.top - crop.bottom),
  1837. 				0,
  1838. 				0,
  1839. 				videoCanvas.width,
  1840. 				videoCanvas.height,
  1841. 			);
  1842. 			
  1843. 			components.left.update(doFill);
  1844. 			components.right.update(doFill);
  1845. 			components.top.update(doFill);
  1846. 			components.bottom.update(doFill);
  1847. 		}
  1848. 	}
  1849. 	
  1850. 	return new function () {
  1851. 		const container = document.createElement('div');
  1852. 		
  1853. 		container.style.display = 'none';
  1854. 		
  1855. 		container.appendChild(glowCanvas);
  1856. 		containers.background.appendChild(container);
  1857. 		
  1858. 		this.isHidden = false;
  1859. 		
  1860. 		let instance, startCopyLoop, stopCopyLoop;
  1861. 		
  1862. 		const play = () => {
  1863. 			if (!video.paused && !this.isHidden && !enabler.isHidingGlow) {
  1864. 				startCopyLoop?.();
  1865. 			}
  1866. 		};
  1867. 		
  1868. 		const fill = () => {
  1869. 			if (!this.isHidden) {
  1870. 				instance.update(true);
  1871. 			}
  1872. 		};
  1873. 		
  1874. 		const handleVisibilityChange = () => {
  1875. 			if (document.hidden) {
  1876. 				stopCopyLoop();
  1877. 			} else {
  1878. 				play();
  1879. 			}
  1880. 		};
  1881. 		
  1882. 		this.handleSizeChange = () => {
  1883. 			instance = new Instance();
  1884. 		};
  1885. 		
  1886. 		// set up pausing if glow isn't visible
  1887. 		this.handleViewChange = (() => {
  1888. 			const cache = new Cache(rotation, zoom);
  1889. 			
  1890. 			let corners;
  1891. 			
  1892. 			return (doForce = false) => {
  1893. 				if (doForce || cache.isStale()) {
  1894. 					corners = getRotatedCorners(viewport.clientWidth / 2 / zoom.value, viewport.clientHeight / 2 / zoom.value);
  1895. 				}
  1896. 				
  1897. 				const videoX = position.x * video.clientWidth;
  1898. 				const videoY = position.y * video.clientHeight;
  1899. 				
  1900. 				for (const corner of corners) {
  1901. 					if (
  1902. 						// unpause if the viewport extends more than 1 pixel beyond a video edge
  1903. 						videoX + corner.x > (0.5 - crop.right) * video.clientWidth + 1
  1904. 						|| videoX - corner.x < (crop.left - 0.5) * video.clientWidth - 1
  1905. 						|| videoY + corner.y > (0.5 - crop.top) * video.clientHeight + 1
  1906. 						|| videoY - corner.y < (crop.bottom - 0.5) * video.clientHeight - 1
  1907. 					) {
  1908. 						// fill if newly visible
  1909. 						if (this.isHidden) {
  1910. 							instance?.update(true);
  1911. 						}
  1912. 						
  1913. 						this.isHidden = false;
  1914. 						
  1915. 						glowCanvas.style.removeProperty('visibility');
  1916. 						
  1917. 						play();
  1918. 						
  1919. 						return;
  1920. 					}
  1921. 				}
  1922. 				
  1923. 				this.isHidden = true;
  1924. 				
  1925. 				glowCanvas.style.visibility = 'hidden';
  1926. 				
  1927. 				stopCopyLoop?.();
  1928. 			};
  1929. 		})();
  1930. 		
  1931. 		const loop = {};
  1932. 		
  1933. 		this.start = () => {
  1934. 			const config = $config.get().glow;
  1935. 			
  1936. 			if (!config) {
  1937. 				return;
  1938. 			}
  1939. 			
  1940. 			if (!enabler.isHidingGlow) {
  1941. 				container.style.removeProperty('display');
  1942. 			}
  1943. 			
  1944. 			// todo handle this?
  1945. 			if (crop.left + crop.right >= 1 || crop.top + crop.bottom >= 1) {
  1946. 				return;
  1947. 			}
  1948. 			
  1949. 			let loopId = -1;
  1950. 			
  1951. 			if (loop.interval !== config.interval || loop.fps !== config.fps) {
  1952. 				loop.interval = config.interval;
  1953. 				loop.fps = config.fps;
  1954. 				loop.wasSlow = false;
  1955. 				loop.throttleCount = 0;
  1956. 			}
  1957. 			
  1958. 			stopCopyLoop = () => ++loopId;
  1959. 			
  1960. 			instance = new Instance();
  1961. 			
  1962. 			startCopyLoop = async () => {
  1963. 				const id = ++loopId;
  1964. 				
  1965. 				await new Promise((resolve) => {
  1966. 					window.setTimeout(resolve, config.interval);
  1967. 				});
  1968. 				
  1969. 				while (id === loopId) {
  1970. 					const startTime = Date.now();
  1971. 					
  1972. 					instance.update();
  1973. 					
  1974. 					const delay = loop.interval - (Date.now() - startTime);
  1975. 					
  1976. 					if (delay <= 0) {
  1977. 						if (loop.wasSlow) {
  1978. 							loop.interval = 1000 / (loop.fps - ++loop.throttleCount);
  1979. 						}
  1980. 						
  1981. 						loop.wasSlow = !loop.wasSlow;
  1982. 						
  1983. 						continue;
  1984. 					}
  1985. 					
  1986. 					if (delay > 2 && loop.throttleCount > 0) {
  1987. 						console.warn(`[${GM.info.script.name}] Glow update frequency reduced from ${loop.fps} hertz to ${loop.fps - loop.throttleCount} hertz due to poor performance.`);
  1988. 						
  1989. 						loop.fps -= loop.throttleCount;
  1990. 						
  1991. 						loop.throttleCount = 0;
  1992. 					}
  1993. 					
  1994. 					loop.wasSlow = false;
  1995. 					
  1996. 					await new Promise((resolve) => {
  1997. 						window.setTimeout(resolve, delay);
  1998. 					});
  1999. 				}
  2000. 			};
  2001. 			
  2002. 			play();
  2003. 			
  2004. 			video.addEventListener('pause', stopCopyLoop);
  2005. 			video.addEventListener('play', play);
  2006. 			video.addEventListener('seeked', fill);
  2007. 			
  2008. 			document.addEventListener('visibilitychange', handleVisibilityChange);
  2009. 		};
  2010. 		
  2011. 		const priorCrop = {};
  2012. 		
  2013. 		this.hide = () => {
  2014. 			Object.assign(priorCrop, crop);
  2015. 			
  2016. 			stopCopyLoop?.();
  2017. 			
  2018. 			container.style.display = 'none';
  2019. 		};
  2020. 		
  2021. 		this.show = () => {
  2022. 			if (Object.entries(priorCrop).some(([edge, value]) => crop[edge] !== value)) {
  2023. 				this.reset();
  2024. 			} else {
  2025. 				play();
  2026. 			}
  2027. 			
  2028. 			container.style.removeProperty('display');
  2029. 		};
  2030. 		
  2031. 		this.stop = () => {
  2032. 			this.hide();
  2033. 			
  2034. 			video.removeEventListener('pause', stopCopyLoop);
  2035. 			video.removeEventListener('play', play);
  2036. 			video.removeEventListener('seeked', fill);
  2037. 			
  2038. 			document.removeEventListener('visibilitychange', handleVisibilityChange);
  2039. 			
  2040. 			startCopyLoop = undefined;
  2041. 			stopCopyLoop = undefined;
  2042. 		};
  2043. 		
  2044. 		this.reset = () => {
  2045. 			this.stop();
  2046. 			
  2047. 			this.start();
  2048. 		};
  2049. 	}();
  2050. })();
  2051.  
  2052. const peek = (stop = false) => {
  2053. 	const prior = {
  2054. 		zoom: zoom.value,
  2055. 		rotation: rotation.value,
  2056. 		crop: crop.getValues(),
  2057. 		position: position.getValues(),
  2058. 	};
  2059. 	
  2060. 	position.reset();
  2061. 	rotation.reset();
  2062. 	zoom.reset();
  2063. 	crop.reset();
  2064. 	
  2065. 	glow[stop ? 'stop' : 'reset']();
  2066. 	
  2067. 	return () => {
  2068. 		zoom.value = prior.zoom;
  2069. 		rotation.value = prior.rotation;
  2070. 		Object.assign(position, prior.position);
  2071. 		Object.assign(crop, prior.crop);
  2072. 		
  2073. 		actions.crop.set(prior.crop);
  2074. 		
  2075. 		position.apply();
  2076. 		rotation.apply();
  2077. 		zoom.apply();
  2078. 		crop.apply();
  2079. 	};
  2080. };
  2081.  
  2082. const actions = (() => {
  2083. 	const drag = (event, clickCallback, moveCallback, target = video) => new Promise((resolve) => {
  2084. 		event.stopImmediatePropagation();
  2085. 		event.preventDefault();
  2086. 		
  2087. 		// window blur events don't fire if devtools is open
  2088. 		stopDrag?.();
  2089. 		
  2090. 		target.setPointerCapture(event.pointerId);
  2091. 		
  2092. 		css.tag(enabler.CLASS_DRAGGING);
  2093. 		
  2094. 		const cancel = (event) => {
  2095. 			event.stopImmediatePropagation();
  2096. 			event.preventDefault();
  2097. 		};
  2098. 		
  2099. 		document.addEventListener('click', cancel, true);
  2100. 		document.addEventListener('dblclick', cancel, true);
  2101. 		
  2102. 		const clickDisallowListener = ({clientX, clientY}) => {
  2103. 			const {clickCutoff} = $config.get();
  2104. 			const distance = Math.abs(event.clientX - clientX) + Math.abs(event.clientY - clientY);
  2105. 			
  2106. 			if (distance >= clickCutoff) {
  2107. 				target.removeEventListener('pointermove', clickDisallowListener);
  2108. 				target.removeEventListener('pointerup', clickCallback);
  2109. 			}
  2110. 		};
  2111. 		
  2112. 		if (clickCallback) {
  2113. 			target.addEventListener('pointermove', clickDisallowListener);
  2114. 			target.addEventListener('pointerup', clickCallback, {once: true});
  2115. 		}
  2116. 		
  2117. 		target.addEventListener('pointermove', moveCallback);
  2118. 		
  2119. 		stopDrag = () => {
  2120. 			css.tag(enabler.CLASS_DRAGGING, false);
  2121. 			
  2122. 			target.removeEventListener('pointermove', moveCallback);
  2123. 			
  2124. 			if (clickCallback) {
  2125. 				target.removeEventListener('pointermove', clickDisallowListener);
  2126. 				target.removeEventListener('pointerup', clickCallback);
  2127. 			}
  2128. 			
  2129. 			// delay removing listeners for events that happen after pointerup
  2130. 			window.setTimeout(() => {
  2131. 				document.removeEventListener('dblclick', cancel, true);
  2132. 				document.removeEventListener('click', cancel, true);
  2133. 			}, 0);
  2134. 			
  2135. 			window.removeEventListener('blur', stopDrag);
  2136. 			target.removeEventListener('pointerup', stopDrag);
  2137. 			
  2138. 			target.releasePointerCapture(event.pointerId);
  2139. 			
  2140. 			stopDrag = undefined;
  2141. 			
  2142. 			enabler.handleChange();
  2143. 			
  2144. 			resolve();
  2145. 		};
  2146. 		
  2147. 		window.addEventListener('blur', stopDrag);
  2148. 		target.addEventListener('pointerup', stopDrag);
  2149. 	});
  2150. 	
  2151. 	const getOnScroll = (() => {
  2152. 		// https://stackoverflow.com/a/30134826
  2153. 		const multipliers = [1, 40, 800];
  2154. 		
  2155. 		return (callback) => (event) => {
  2156. 			event.stopImmediatePropagation();
  2157. 			event.preventDefault();
  2158. 			
  2159. 			if (event.deltaY !== 0) {
  2160. 				callback(event.deltaY * multipliers[event.deltaMode]);
  2161. 			}
  2162. 		};
  2163. 	})();
  2164. 	
  2165. 	const addListeners = ({onMouseDown, onRightClick, onScroll}, doAdd = true) => {
  2166. 		const property = `${doAdd ? 'add' : 'remove'}EventListener`;
  2167. 		
  2168. 		altTarget[property]('pointerdown', onMouseDown);
  2169. 		altTarget[property]('contextmenu', onRightClick, true);
  2170. 		altTarget[property]('wheel', onScroll);
  2171. 	};
  2172. 	
  2173. 	return {
  2174. 		crop: new function () {
  2175. 			let top = 0, right = 0, bottom = 0, left = 0, handle;
  2176. 			
  2177. 			const values = {};
  2178. 			
  2179. 			Object.defineProperty(values, 'top', {get: () => top, set: (value) => top = value});
  2180. 			Object.defineProperty(values, 'right', {get: () => right, set: (value) => right = value});
  2181. 			Object.defineProperty(values, 'bottom', {get: () => bottom, set: (value) => bottom = value});
  2182. 			Object.defineProperty(values, 'left', {get: () => left, set: (value) => left = value});
  2183. 			
  2184. 			class Button {
  2185. 				// allowance for rounding errors
  2186. 				static ALLOWANCE_HANDLE = 0.0001;
  2187. 				
  2188. 				static CLASS_HANDLE = 'viewfind-crop-handle';
  2189. 				static CLASS_EDGES = {
  2190. 					left: 'viewfind-crop-left',
  2191. 					top: 'viewfind-crop-top',
  2192. 					right: 'viewfind-crop-right',
  2193. 					bottom: 'viewfind-crop-bottom',
  2194. 				};
  2195. 				
  2196. 				static OPPOSITES = {
  2197. 					left: 'right',
  2198. 					right: 'left',
  2199. 					
  2200. 					top: 'bottom',
  2201. 					bottom: 'top',
  2202. 				};
  2203. 				
  2204. 				callbacks = [];
  2205. 				
  2206. 				element = document.createElement('div');
  2207. 				
  2208. 				constructor(...edges) {
  2209. 					this.edges = edges;
  2210. 					
  2211. 					this.isHandle = true;
  2212. 					
  2213. 					this.element.style.position = 'absolute';
  2214. 					this.element.style.pointerEvents = 'all';
  2215. 					
  2216. 					for (const edge of edges) {
  2217. 						this.element.style[edge] = '0';
  2218. 						
  2219. 						this.element.classList.add(Button.CLASS_EDGES[edge]);
  2220. 						
  2221. 						this.element.style.setProperty(`border-${Button.OPPOSITES[edge]}-width`, '1px');
  2222. 					}
  2223. 					
  2224. 					this.element.addEventListener('contextmenu', (event) => {
  2225. 						event.stopPropagation();
  2226. 						event.preventDefault();
  2227. 						
  2228. 						this.reset(false);
  2229. 					});
  2230. 					
  2231. 					this.element.addEventListener('pointerdown', (() => {
  2232. 						const clickListener = ({offsetX, offsetY, target}) => {
  2233. 							this.set({
  2234. 								width: (this.edges.includes('left') ? offsetX : target.clientWidth - offsetX) / video.clientWidth,
  2235. 								height: (this.edges.includes('top') ? offsetY : target.clientHeight - offsetY) / video.clientHeight,
  2236. 							}, false);
  2237. 						};
  2238. 						
  2239. 						const getDragListener = (event, target) => {
  2240. 							const getWidth = (() => {
  2241. 								if (this.edges.includes('left')) {
  2242. 									const position = this.element.clientWidth - event.offsetX;
  2243. 									
  2244. 									return ({offsetX}) => offsetX + position;
  2245. 								}
  2246. 								
  2247. 								const position = target.offsetWidth + event.offsetX;
  2248. 								
  2249. 								return ({offsetX}) => position - offsetX;
  2250. 							})();
  2251. 							
  2252. 							const getHeight = (() => {
  2253. 								if (this.edges.includes('top')) {
  2254. 									const position = this.element.clientHeight - event.offsetY;
  2255. 									
  2256. 									return ({offsetY}) => offsetY + position;
  2257. 								}
  2258. 								
  2259. 								const position = target.offsetHeight + event.offsetY;
  2260. 								
  2261. 								return ({offsetY}) => position - offsetY;
  2262. 							})();
  2263. 							
  2264. 							return (event) => {
  2265. 								this.set({
  2266. 									width: getWidth(event) / video.clientWidth,
  2267. 									height: getHeight(event) / video.clientHeight,
  2268. 								});
  2269. 							};
  2270. 						};
  2271. 						
  2272. 						return async (event) => {
  2273. 							if (event.buttons === 1) {
  2274. 								const target = this.element.parentElement;
  2275. 								
  2276. 								if (this.isHandle) {
  2277. 									this.setPanel();
  2278. 								}
  2279. 								
  2280. 								await drag(event, clickListener, getDragListener(event, target), target);
  2281. 								
  2282. 								this.updateCounterpart();
  2283. 							}
  2284. 						};
  2285. 					})());
  2286. 				}
  2287. 				
  2288. 				notify() {
  2289. 					for (const callback of this.callbacks) {
  2290. 						callback();
  2291. 					}
  2292. 				}
  2293. 				
  2294. 				set isHandle(value) {
  2295. 					this._isHandle = value;
  2296. 					
  2297. 					this.element.classList[value ? 'add' : 'remove'](Button.CLASS_HANDLE);
  2298. 				}
  2299. 				
  2300. 				get isHandle() {
  2301. 					return this._isHandle;
  2302. 				}
  2303. 				
  2304. 				reset() {
  2305. 					this.isHandle = true;
  2306. 					
  2307. 					for (const edge of this.edges) {
  2308. 						values[edge] = 0;
  2309. 					}
  2310. 				}
  2311. 			}
  2312. 			
  2313. 			class EdgeButton extends Button {
  2314. 				constructor(edge) {
  2315. 					super(edge);
  2316. 					
  2317. 					this.edge = edge;
  2318. 				}
  2319. 				
  2320. 				updateCounterpart() {
  2321. 					if (this.counterpart.isHandle) {
  2322. 						this.counterpart.setHandle();
  2323. 					}
  2324. 				}
  2325. 				
  2326. 				setCrop(value = 0) {
  2327. 					values[this.edge] = value;
  2328. 				}
  2329. 				
  2330. 				setPanel() {
  2331. 					this.isHandle = false;
  2332. 					
  2333. 					this.setCrop(handle);
  2334. 					
  2335. 					this.setHandle();
  2336. 				}
  2337. 			}
  2338. 			
  2339. 			class SideButton extends EdgeButton {
  2340. 				flow() {
  2341. 					let size = 1;
  2342. 					
  2343. 					if (top <= Button.ALLOWANCE_HANDLE) {
  2344. 						size -= handle;
  2345. 						
  2346. 						this.element.style.top = `${handle * 100}%`;
  2347. 					} else {
  2348. 						size -= top;
  2349. 						
  2350. 						this.element.style.top = `${top * 100}%`;
  2351. 					}
  2352. 					
  2353. 					if (bottom <= Button.ALLOWANCE_HANDLE) {
  2354. 						size -= handle;
  2355. 					} else {
  2356. 						size -= bottom;
  2357. 					}
  2358. 					
  2359. 					this.element.style.height = `${Math.max(0, size * 100)}%`;
  2360. 				}
  2361. 				
  2362. 				setBounds(counterpart, components) {
  2363. 					this.counterpart = components[counterpart];
  2364. 					
  2365. 					components.top.callbacks.push(() => {
  2366. 						this.flow();
  2367. 					});
  2368. 					
  2369. 					components.bottom.callbacks.push(() => {
  2370. 						this.flow();
  2371. 					});
  2372. 				}
  2373. 				
  2374. 				setHandle(doNotify = true) {
  2375. 					this.element.style.width = `${Math.min(1 - values[this.counterpart.edge], handle) * 100}%`;
  2376. 					
  2377. 					if (doNotify) {
  2378. 						this.notify();
  2379. 					}
  2380. 				}
  2381. 				
  2382. 				set({width}, doUpdateCounterpart = true) {
  2383. 					if (this.isHandle !== (this.isHandle = width <= Button.ALLOWANCE_HANDLE)) {
  2384. 						this.flow();
  2385. 					}
  2386. 					
  2387. 					if (doUpdateCounterpart) {
  2388. 						this.updateCounterpart();
  2389. 					}
  2390. 					
  2391. 					if (this.isHandle) {
  2392. 						this.setCrop();
  2393. 						
  2394. 						this.setHandle();
  2395. 						
  2396. 						return;
  2397. 					}
  2398. 					
  2399. 					const size = Math.min(1 - values[this.counterpart.edge], width);
  2400. 					
  2401. 					this.setCrop(size);
  2402. 					
  2403. 					this.element.style.width = `${size * 100}%`;
  2404. 					
  2405. 					this.notify();
  2406. 				}
  2407. 				
  2408. 				reset(isGeneral = true) {
  2409. 					super.reset();
  2410. 					
  2411. 					if (isGeneral) {
  2412. 						this.element.style.top = `${handle * 100}%`;
  2413. 						this.element.style.height = `${(0.5 - handle) * 200}%`;
  2414. 						this.element.style.width = `${handle * 100}%`;
  2415. 						
  2416. 						return;
  2417. 					}
  2418. 					
  2419. 					this.flow();
  2420. 					
  2421. 					this.setHandle();
  2422. 					
  2423. 					this.updateCounterpart();
  2424. 				}
  2425. 			}
  2426. 			
  2427. 			class BaseButton extends EdgeButton {
  2428. 				flow() {
  2429. 					let size = 1;
  2430. 					
  2431. 					if (left <= Button.ALLOWANCE_HANDLE) {
  2432. 						size -= handle;
  2433. 						
  2434. 						this.element.style.left = `${handle * 100}%`;
  2435. 					} else {
  2436. 						size -= left;
  2437. 						
  2438. 						this.element.style.left = `${left * 100}%`;
  2439. 					}
  2440. 					
  2441. 					if (right <= Button.ALLOWANCE_HANDLE) {
  2442. 						size -= handle;
  2443. 					} else {
  2444. 						size -= right;
  2445. 					}
  2446. 					
  2447. 					this.element.style.width = `${Math.max(0, size) * 100}%`;
  2448. 				}
  2449. 				
  2450. 				setBounds(counterpart, components) {
  2451. 					this.counterpart = components[counterpart];
  2452. 					
  2453. 					components.left.callbacks.push(() => {
  2454. 						this.flow();
  2455. 					});
  2456. 					
  2457. 					components.right.callbacks.push(() => {
  2458. 						this.flow();
  2459. 					});
  2460. 				}
  2461. 				
  2462. 				setHandle(doNotify = true) {
  2463. 					this.element.style.height = `${Math.min(1 - values[this.counterpart.edge], handle) * 100}%`;
  2464. 					
  2465. 					if (doNotify) {
  2466. 						this.notify();
  2467. 					}
  2468. 				}
  2469. 				
  2470. 				set({height}, doUpdateCounterpart = false) {
  2471. 					if (this.isHandle !== (this.isHandle = height <= Button.ALLOWANCE_HANDLE)) {
  2472. 						this.flow();
  2473. 					}
  2474. 					
  2475. 					if (doUpdateCounterpart) {
  2476. 						this.updateCounterpart();
  2477. 					}
  2478. 					
  2479. 					if (this.isHandle) {
  2480. 						this.setCrop();
  2481. 						
  2482. 						this.setHandle();
  2483. 						
  2484. 						return;
  2485. 					}
  2486. 					
  2487. 					const size = Math.min(1 - values[this.counterpart.edge], height);
  2488. 					
  2489. 					this.setCrop(size);
  2490. 					
  2491. 					this.element.style.height = `${size * 100}%`;
  2492. 					
  2493. 					this.notify();
  2494. 				}
  2495. 				
  2496. 				reset(isGeneral = true) {
  2497. 					super.reset();
  2498. 					
  2499. 					if (isGeneral) {
  2500. 						this.element.style.left = `${handle * 100}%`;
  2501. 						this.element.style.width = `${(0.5 - handle) * 200}%`;
  2502. 						this.element.style.height = `${handle * 100}%`;
  2503. 						
  2504. 						return;
  2505. 					}
  2506. 					
  2507. 					this.flow();
  2508. 					
  2509. 					this.setHandle();
  2510. 					
  2511. 					this.updateCounterpart();
  2512. 				}
  2513. 			}
  2514. 			
  2515. 			class CornerButton extends Button {
  2516. 				static CLASS_NAME = 'viewfind-crop-corner';
  2517. 				
  2518. 				constructor(sectors, ...edges) {
  2519. 					super(...edges);
  2520. 					
  2521. 					this.element.classList.add(CornerButton.CLASS_NAME);
  2522. 					
  2523. 					this.sectors = sectors;
  2524. 					
  2525. 					for (const sector of sectors) {
  2526. 						sector.callbacks.push(this.flow.bind(this));
  2527. 					}
  2528. 				}
  2529. 				
  2530. 				flow() {
  2531. 					let isHandle = true;
  2532. 					
  2533. 					if (this.sectors[0].isHandle) {
  2534. 						this.element.style.width = `${Math.min(1 - values[this.sectors[0].counterpart.edge], handle) * 100}%`;
  2535. 					} else {
  2536. 						this.element.style.width = `${values[this.edges[0]] * 100}%`;
  2537. 						
  2538. 						isHandle = false;
  2539. 					}
  2540. 					
  2541. 					if (this.sectors[1].isHandle) {
  2542. 						this.element.style.height = `${Math.min(1 - values[this.sectors[1].counterpart.edge], handle) * 100}%`;
  2543. 					} else {
  2544. 						this.element.style.height = `${values[this.edges[1]] * 100}%`;
  2545. 						
  2546. 						isHandle = false;
  2547. 					}
  2548. 					
  2549. 					this.isHandle = isHandle;
  2550. 				}
  2551. 				
  2552. 				updateCounterpart() {
  2553. 					for (const sector of this.sectors) {
  2554. 						sector.updateCounterpart();
  2555. 					}
  2556. 				}
  2557. 				
  2558. 				set(size) {
  2559. 					for (const sector of this.sectors) {
  2560. 						sector.set(size);
  2561. 					}
  2562. 				}
  2563. 				
  2564. 				reset(isGeneral = true) {
  2565. 					this.isHandle = true;
  2566. 					
  2567. 					this.element.style.width = `${handle * 100}%`;
  2568. 					this.element.style.height = `${handle * 100}%`;
  2569. 					
  2570. 					if (isGeneral) {
  2571. 						return;
  2572. 					}
  2573. 					
  2574. 					for (const sector of this.sectors) {
  2575. 						sector.reset(false);
  2576. 					}
  2577. 				}
  2578. 				
  2579. 				setPanel() {
  2580. 					for (const sector of this.sectors) {
  2581. 						sector.setPanel();
  2582. 					}
  2583. 				}
  2584. 			}
  2585. 			
  2586. 			this.CODE = 'crop';
  2587. 			
  2588. 			this.CLASS_ABLE = 'viewfind-action-able-crop';
  2589. 			
  2590. 			const container = document.createElement('div');
  2591. 			
  2592. 			// todo ditch the containers object
  2593. 			container.style.width = container.style.height = 'inherit';
  2594. 			
  2595. 			containers.foreground.append(container);
  2596. 			
  2597. 			this.reset = () => {
  2598. 				for (const component of Object.values(this.components)) {
  2599. 					component.reset(true);
  2600. 				}
  2601. 			};
  2602. 			
  2603. 			this.onRightClick = (event) => {
  2604. 				if (event.target.parentElement.id === container.id) {
  2605. 					return;
  2606. 				}
  2607. 				
  2608. 				event.stopPropagation();
  2609. 				event.preventDefault();
  2610. 				
  2611. 				if (stopDrag) {
  2612. 					return;
  2613. 				}
  2614. 				
  2615. 				this.reset();
  2616. 			};
  2617. 			
  2618. 			this.onScroll = getOnScroll((distance) => {
  2619. 				const increment = distance * $config.get().speeds.crop / zoom.value;
  2620. 				
  2621. 				this.components.top.set({height: top + Math.min((1 - top - bottom) / 2, increment)});
  2622. 				this.components.left.set({width: left + Math.min((1 - left - right) / 2, increment)});
  2623. 				
  2624. 				this.components.bottom.set({height: bottom + increment});
  2625. 				this.components.right.set({width: right + increment});
  2626. 			});
  2627. 			
  2628. 			this.onMouseDown = (() => {
  2629. 				const getDragListener = () => {
  2630. 					const multiplier = $config.get().multipliers.crop;
  2631. 					
  2632. 					const setX = ((right, left, change) => {
  2633. 						const clamped = Math.max(-left, Math.min(right, change * multiplier / video.clientWidth));
  2634. 						
  2635. 						this.components.left.set({width: left + clamped});
  2636. 						this.components.right.set({width: right - clamped});
  2637. 					}).bind(undefined, right, left);
  2638. 					
  2639. 					const setY = ((top, bottom, change) => {
  2640. 						const clamped = Math.max(-top, Math.min(bottom, change * multiplier / video.clientHeight));
  2641. 						
  2642. 						this.components.top.set({height: top + clamped});
  2643. 						
  2644. 						this.components.bottom.set({height: bottom - clamped});
  2645. 					}).bind(undefined, top, bottom);
  2646. 					
  2647. 					let priorEvent;
  2648. 					
  2649. 					return ({offsetX, offsetY}) => {
  2650. 						if (!priorEvent) {
  2651. 							priorEvent = {offsetX, offsetY};
  2652. 							
  2653. 							return;
  2654. 						}
  2655. 						
  2656. 						setX(offsetX - priorEvent.offsetX);
  2657. 						setY(offsetY - priorEvent.offsetY);
  2658. 					};
  2659. 				};
  2660. 				
  2661. 				const clickListener = () => {
  2662. 					zoom.value = zoom.getFit(1 - left - right, 1 - top - bottom);
  2663. 					
  2664. 					zoom.constrain();
  2665. 					
  2666. 					position.x = (left - right) / 2;
  2667. 					position.y = (bottom - top) / 2;
  2668. 					
  2669. 					position.constrain();
  2670. 				};
  2671. 				
  2672. 				return (event) => {
  2673. 					if (event.buttons === 1) {
  2674. 						drag(event, clickListener, getDragListener(), container);
  2675. 					}
  2676. 				};
  2677. 			})();
  2678. 			
  2679. 			this.components = {
  2680. 				top: new BaseButton('top'),
  2681. 				right: new SideButton('right'),
  2682. 				bottom: new BaseButton('bottom'),
  2683. 				left: new SideButton('left'),
  2684. 			};
  2685. 			
  2686. 			this.components.top.setBounds('bottom', this.components);
  2687. 			this.components.right.setBounds('left', this.components);
  2688. 			this.components.bottom.setBounds('top', this.components);
  2689. 			this.components.left.setBounds('right', this.components);
  2690. 			
  2691. 			this.components.topLeft = new CornerButton([this.components.left, this.components.top], 'left', 'top');
  2692. 			this.components.topRight = new CornerButton([this.components.right, this.components.top], 'right', 'top');
  2693. 			this.components.bottomLeft = new CornerButton([this.components.left, this.components.bottom], 'left', 'bottom');
  2694. 			this.components.bottomRight = new CornerButton([this.components.right, this.components.bottom], 'right', 'bottom');
  2695. 			
  2696. 			container.append(...Object.values(this.components).map(({element}) => element));
  2697. 			
  2698. 			this.set = ({top, right, bottom, left}) => {
  2699. 				this.components.top.set({height: top});
  2700. 				this.components.right.set({width: right});
  2701. 				this.components.bottom.set({height: bottom});
  2702. 				this.components.left.set({width: left});
  2703. 			};
  2704. 			
  2705. 			this.onInactive = () => {
  2706. 				addListeners(this, false);
  2707. 				
  2708. 				if (crop.left === left && crop.top === top && crop.right === right && crop.bottom === bottom) {
  2709. 					return;
  2710. 				}
  2711. 				
  2712. 				crop.left = left;
  2713. 				crop.top = top;
  2714. 				crop.right = right;
  2715. 				crop.bottom = bottom;
  2716. 				
  2717. 				crop.apply();
  2718. 			};
  2719. 			
  2720. 			this.onActive = () => {
  2721. 				const config = $config.get().crop;
  2722. 				
  2723. 				handle = config.handle / Math.max(zoom.value, 1);
  2724. 				
  2725. 				for (const component of [this.components.top, this.components.bottom, this.components.left, this.components.right]) {
  2726. 					if (component.isHandle) {
  2727. 						component.setHandle();
  2728. 					}
  2729. 				}
  2730. 				
  2731. 				crop.reveal();
  2732. 				
  2733. 				addListeners(this);
  2734. 				
  2735. 				if (!enabler.isHidingGlow) {
  2736. 					glow.handleViewChange();
  2737. 					
  2738. 					glow.reset();
  2739. 				}
  2740. 			};
  2741. 			
  2742. 			const draggingSelector = css.getSelector(enabler.CLASS_DRAGGING);
  2743. 			
  2744. 			this.updateConfig = (() => {
  2745. 				const rule = new css.Toggleable();
  2746. 				
  2747. 				return () => {
  2748. 					// set handle size
  2749. 					for (const button of [this.components.left, this.components.top, this.components.right, this.components.bottom]) {
  2750. 						if (button.isHandle) {
  2751. 							button.setHandle();
  2752. 						}
  2753. 					}
  2754. 					
  2755. 					rule.remove();
  2756. 					
  2757. 					const {colour} = $config.get().crop;
  2758. 					const {id} = container;
  2759. 					
  2760. 					rule.add(`#${id}>:hover.${Button.CLASS_HANDLE},#${id}>:not(.${Button.CLASS_HANDLE})`, ['background-color', colour.fill]);
  2761. 					rule.add(`#${id}>*`, ['border-color', colour.border]);
  2762. 					rule.add(`#${id}:not(${draggingSelector} *)>:not(:hover)`, ['filter', `drop-shadow(${colour.shadow} 0 0 1px)`]);
  2763. 				};
  2764. 			})();
  2765. 			
  2766. 			$config.ready.then(() => {
  2767. 				this.updateConfig();
  2768. 			});
  2769. 			
  2770. 			container.id = 'viewfind-crop-container';
  2771. 			
  2772. 			(() => {
  2773. 				const {id} = container;
  2774. 				
  2775. 				css.add(`${css.getSelector(enabler.CLASS_DRAGGING)} #${id}`, ['cursor', 'grabbing']);
  2776. 				css.add(`${css.getSelector(enabler.CLASS_ABLE)} #${id}`, ['cursor', 'grab']);
  2777. 				css.add(`#${id}>:not(${draggingSelector} .${Button.CLASS_HANDLE})`, ['border-style', 'solid']);
  2778. 				css.add(`${draggingSelector} #${id}>.${Button.CLASS_HANDLE}`, ['filter', 'none']);
  2779. 				
  2780. 				for (const [side, sideClass] of Object.entries(Button.CLASS_EDGES)) {
  2781. 					css.add(
  2782. 						`${draggingSelector} #${id}>.${sideClass}.${Button.CLASS_HANDLE}~.${sideClass}.${CornerButton.CLASS_NAME}`,
  2783. 						[`border-${CornerButton.OPPOSITES[side]}-style`, 'none'],
  2784. 						['filter', 'none'],
  2785. 					);
  2786. 					
  2787. 					// in fullscreen, 16:9 videos get an offsetLeft of 1px on my 16:9 monitor
  2788. 					// I'm extending buttons by 1px so that they reach the edge of screens like mine at default zoom
  2789. 					css.add(`#${id}>.${sideClass}`, [`margin-${side}`, '-1px'], [`padding-${side}`, '1px']);
  2790. 				}
  2791. 				
  2792. 				css.add(`#${id}:not(.${this.CLASS_ABLE} *)`, ['display', 'none']);
  2793. 			})();
  2794. 		}(),
  2795. 		
  2796. 		pan: new function () {
  2797. 			this.CODE = 'pan';
  2798. 			
  2799. 			this.CLASS_ABLE = 'viewfind-action-able-pan';
  2800. 			
  2801. 			this.onActive = () => {
  2802. 				this.updateCrosshair();
  2803. 				
  2804. 				addListeners(this);
  2805. 			};
  2806. 			
  2807. 			this.onInactive = () => {
  2808. 				addListeners(this, false);
  2809. 			};
  2810. 			
  2811. 			this.updateCrosshair = (() => {
  2812. 				const getRoundedString = (number, decimal = 2) => {
  2813. 					const raised = `${Math.round(number * Math.pow(10, decimal))}`.padStart(decimal + 1, '0');
  2814. 					
  2815. 					return `${raised.substr(0, raised.length - decimal)}.${raised.substr(raised.length - decimal)}`;
  2816. 				};
  2817. 				
  2818. 				const getSigned = (ratio) => {
  2819. 					const percent = Math.round(ratio * 100);
  2820. 					
  2821. 					if (percent <= 0) {
  2822. 						return `${percent}`;
  2823. 					}
  2824. 					
  2825. 					return `+${percent}`;
  2826. 				};
  2827. 				
  2828. 				return () => {
  2829. 					crosshair.text.innerText = `${getRoundedString(zoom.value)}×\n${getSigned(position.x)}%\n${getSigned(position.y)}%`;
  2830. 				};
  2831. 			})();
  2832. 			
  2833. 			this.onScroll = getOnScroll((distance) => {
  2834. 				const increment = distance * $config.get().speeds.zoom;
  2835. 				
  2836. 				if (increment > 0) {
  2837. 					zoom.value *= 1 + increment;
  2838. 				} else {
  2839. 					zoom.value /= 1 - increment;
  2840. 				}
  2841. 				
  2842. 				zoom.constrain();
  2843. 				
  2844. 				position.constrain();
  2845. 				
  2846. 				this.updateCrosshair();
  2847. 			});
  2848. 			
  2849. 			this.onRightClick = (event) => {
  2850. 				event.stopImmediatePropagation();
  2851. 				event.preventDefault();
  2852. 				
  2853. 				if (stopDrag) {
  2854. 					return;
  2855. 				}
  2856. 				
  2857. 				position.x = position.y = 0;
  2858. 				zoom.value = 1;
  2859. 				
  2860. 				position.apply();
  2861. 				
  2862. 				zoom.constrain();
  2863. 				
  2864. 				this.updateCrosshair();
  2865. 			};
  2866. 			
  2867. 			this.onMouseDown = (() => {
  2868. 				const getDragListener = () => {
  2869. 					const {multipliers} = $config.get();
  2870. 					
  2871. 					let priorEvent;
  2872. 					
  2873. 					const change = {x: 0, y: 0};
  2874. 					
  2875. 					return ({offsetX, offsetY}) => {
  2876. 						if (priorEvent) {
  2877. 							change.x = (priorEvent.offsetX + change.x - offsetX) * multipliers.pan;
  2878. 							change.y = (priorEvent.offsetY - change.y - offsetY) * -multipliers.pan;
  2879. 							
  2880. 							position.x += change.x / video.clientWidth;
  2881. 							position.y += change.y / video.clientHeight;
  2882. 							
  2883. 							position.constrain();
  2884. 							
  2885. 							this.updateCrosshair();
  2886. 						}
  2887. 						
  2888. 						// events in firefox seem to lose their data after finishing propagation
  2889. 						// so assigning the whole event doesn't work
  2890. 						priorEvent = {offsetX, offsetY};
  2891. 					};
  2892. 				};
  2893. 				
  2894. 				const clickListener = (event) => {
  2895. 					position.x = event.offsetX / video.clientWidth - 0.5;
  2896. 					// Y increases moving down the page
  2897. 					// I flip that to make trigonometry easier
  2898. 					position.y = -event.offsetY / video.clientHeight + 0.5;
  2899. 					
  2900. 					position.constrain(true);
  2901. 					
  2902. 					this.updateCrosshair();
  2903. 				};
  2904. 				
  2905. 				return (event) => {
  2906. 					if (event.buttons === 1) {
  2907. 						drag(event, clickListener, getDragListener());
  2908. 					}
  2909. 				};
  2910. 			})();
  2911. 		}(),
  2912. 		
  2913. 		rotate: new function () {
  2914. 			this.CODE = 'rotate';
  2915. 			
  2916. 			this.CLASS_ABLE = 'viewfind-action-able-rotate';
  2917. 			
  2918. 			this.onActive = () => {
  2919. 				this.updateCrosshair();
  2920. 				
  2921. 				addListeners(this);
  2922. 			};
  2923. 			
  2924. 			this.onInactive = () => {
  2925. 				addListeners(this, false);
  2926. 			};
  2927. 			
  2928. 			this.updateCrosshair = () => {
  2929. 				const angle = PI_HALVES[0] - rotation.value;
  2930. 				
  2931. 				crosshair.text.innerText = `${Math.floor((PI_HALVES[0] - rotation.value) / Math.PI * 180)}°\n≈${Math.round(angle / PI_HALVES[0]) % 4 * 90}°`;
  2932. 			};
  2933. 			
  2934. 			this.onScroll = getOnScroll((distance) => {
  2935. 				rotation.value += distance * $config.get().speeds.rotate;
  2936. 				
  2937. 				rotation.constrain();
  2938. 				
  2939. 				zoom.constrain();
  2940. 				position.constrain();
  2941. 				
  2942. 				this.updateCrosshair();
  2943. 			});
  2944. 			
  2945. 			this.onRightClick = (event) => {
  2946. 				event.stopImmediatePropagation();
  2947. 				event.preventDefault();
  2948. 				
  2949. 				if (stopDrag) {
  2950. 					return;
  2951. 				}
  2952. 				
  2953. 				rotation.value = PI_HALVES[0];
  2954. 				
  2955. 				rotation.apply();
  2956. 				
  2957. 				zoom.constrain();
  2958. 				position.constrain();
  2959. 				
  2960. 				this.updateCrosshair();
  2961. 			};
  2962. 			
  2963. 			this.onMouseDown = (() => {
  2964. 				const getDragListener = () => {
  2965. 					const {multipliers} = $config.get();
  2966. 					const middleX = containers.tracker.clientWidth / 2;
  2967. 					const middleY = containers.tracker.clientHeight / 2;
  2968. 					
  2969. 					const priorPosition = position.getValues();
  2970. 					const priorZoom = zoom.value;
  2971. 					
  2972. 					let priorMouseTheta;
  2973. 					
  2974. 					return (event) => {
  2975. 						const mouseTheta = getTheta(middleX, middleY, event.offsetX, event.offsetY);
  2976. 						
  2977. 						if (priorMouseTheta === undefined) {
  2978. 							priorMouseTheta = mouseTheta;
  2979. 							
  2980. 							return;
  2981. 						}
  2982. 						
  2983. 						position.x = priorPosition.x;
  2984. 						position.y = priorPosition.y;
  2985. 						zoom.value = priorZoom;
  2986. 						
  2987. 						rotation.value += (priorMouseTheta - mouseTheta) * multipliers.rotate;
  2988. 						
  2989. 						rotation.constrain();
  2990. 						
  2991. 						zoom.constrain();
  2992. 						position.constrain();
  2993. 						
  2994. 						this.updateCrosshair();
  2995. 						
  2996. 						priorMouseTheta = mouseTheta;
  2997. 					};
  2998. 				};
  2999. 				
  3000. 				const clickListener = () => {
  3001. 					rotation.value = Math.round(rotation.value / PI_HALVES[0]) * PI_HALVES[0];
  3002. 					
  3003. 					rotation.constrain();
  3004. 					
  3005. 					zoom.constrain();
  3006. 					position.constrain();
  3007. 					
  3008. 					this.updateCrosshair();
  3009. 				};
  3010. 				
  3011. 				return (event) => {
  3012. 					if (event.buttons === 1) {
  3013. 						drag(event, clickListener, getDragListener(), containers.tracker);
  3014. 					}
  3015. 				};
  3016. 			})();
  3017. 		}(),
  3018. 		
  3019. 		configure: new function () {
  3020. 			this.CODE = 'config';
  3021. 			
  3022. 			this.onActive = async () => {
  3023. 				await $config.edit();
  3024. 				
  3025. 				updateConfigs();
  3026. 				
  3027. 				viewport.focus();
  3028. 				
  3029. 				glow.reset();
  3030. 				
  3031. 				position.constrain();
  3032. 				zoom.constrain();
  3033. 			};
  3034. 		}(),
  3035. 		
  3036. 		reset: new function () {
  3037. 			this.CODE = 'reset';
  3038. 			
  3039. 			this.onActive = () => {
  3040. 				if (this.restore) {
  3041. 					this.restore();
  3042. 				} else {
  3043. 					this.restore = peek();
  3044. 				}
  3045. 			};
  3046. 		}(),
  3047. 	};
  3048. })();
  3049.  
  3050. const crosshair = new function () {
  3051. 	this.container = document.createElement('div');
  3052. 	
  3053. 	this.lines = {
  3054. 		horizontal: document.createElement('div'),
  3055. 		vertical: document.createElement('div'),
  3056. 	};
  3057. 	
  3058. 	this.text = document.createElement('div');
  3059. 	
  3060. 	const id = 'viewfind-crosshair';
  3061. 	
  3062. 	this.container.id = id;
  3063. 	this.container.classList.add(CLASS_VIEWFINDER);
  3064. 	
  3065. 	css.add(`#${id}:not(${css.getSelector(actions.pan.CLASS_ABLE)} *):not(${css.getSelector(actions.rotate.CLASS_ABLE)} *)`, ['display', 'none']);
  3066. 	
  3067. 	this.lines.horizontal.style.position = this.lines.vertical.style.position = this.text.style.position = this.container.style.position = 'absolute';
  3068. 	
  3069. 	this.lines.horizontal.style.top = '50%';
  3070. 	this.lines.horizontal.style.width = '100%';
  3071. 	
  3072. 	this.lines.vertical.style.left = '50%';
  3073. 	this.lines.vertical.style.height = '100%';
  3074. 	
  3075. 	this.text.style.userSelect = 'none';
  3076. 	
  3077. 	this.container.style.top = '0';
  3078. 	this.container.style.width = '100%';
  3079. 	this.container.style.height = '100%';
  3080. 	this.container.style.pointerEvents = 'none';
  3081. 	
  3082. 	this.container.append(this.lines.horizontal, this.lines.vertical);
  3083. 	
  3084. 	this.clip = () => {
  3085. 		const {outer, inner, gap} = $config.get().crosshair;
  3086. 		
  3087. 		const thickness = Math.max(inner, outer);
  3088. 		
  3089. 		const halfWidth = viewport.clientWidth / 2;
  3090. 		const halfHeight = viewport.clientHeight / 2;
  3091. 		const halfGap = gap / 2;
  3092. 		
  3093. 		const startInner = (thickness - inner) / 2;
  3094. 		const startOuter = (thickness - outer) / 2;
  3095. 		
  3096. 		const endInner = thickness - startInner;
  3097. 		const endOuter = thickness - startOuter;
  3098. 		
  3099. 		this.lines.horizontal.style.clipPath = 'path(\''
  3100. 			+ `M0 ${startOuter}L${halfWidth - halfGap} ${startOuter}L${halfWidth - halfGap} ${startInner}L${halfWidth + halfGap} ${startInner}L${halfWidth + halfGap} ${startOuter}L${viewport.clientWidth} ${startOuter}`
  3101. 			+ `L${viewport.clientWidth} ${endOuter}L${halfWidth + halfGap} ${endOuter}L${halfWidth + halfGap} ${endInner}L${halfWidth - halfGap} ${endInner}L${halfWidth - halfGap} ${endOuter}L0 ${endOuter}`
  3102. 			+ 'Z\')';
  3103. 		
  3104. 		this.lines.vertical.style.clipPath = 'path(\''
  3105. 			+ `M${startOuter} 0L${startOuter} ${halfHeight - halfGap}L${startInner} ${halfHeight - halfGap}L${startInner} ${halfHeight + halfGap}L${startOuter} ${halfHeight + halfGap}L${startOuter} ${viewport.clientHeight}`
  3106. 			+ `L${endOuter} ${viewport.clientHeight}L${endOuter} ${halfHeight + halfGap}L${endInner} ${halfHeight + halfGap}L${endInner} ${halfHeight - halfGap}L${endOuter} ${halfHeight - halfGap}L${endOuter} 0`
  3107. 			+ 'Z\')';
  3108. 	};
  3109. 	
  3110. 	this.updateConfig = (doClip = true) => {
  3111. 		const {colour, outer, inner, text} = $config.get().crosshair;
  3112. 		const thickness = Math.max(inner, outer);
  3113. 		
  3114. 		this.container.style.filter = `drop-shadow(${colour.shadow} 0 0 1px)`;
  3115. 		
  3116. 		this.lines.horizontal.style.translate = `0 -${thickness / 2}px`;
  3117. 		this.lines.vertical.style.translate = `-${thickness / 2}px 0`;
  3118. 		
  3119. 		this.lines.horizontal.style.height = this.lines.vertical.style.width = `${thickness}px`;
  3120. 		
  3121. 		this.lines.horizontal.style.backgroundColor = this.lines.vertical.style.backgroundColor = colour.fill;
  3122. 		
  3123. 		if (text) {
  3124. 			this.text.style.color = colour.fill;
  3125. 			
  3126. 			this.text.style.font = text.font;
  3127. 			this.text.style.left = `${text.position.x}%`;
  3128. 			this.text.style.top = `${text.position.y}%`;
  3129. 			this.text.style.transform = `translate(${text.translate.x}%,${text.translate.y}%) translate(${text.offset.x}px,${text.offset.y}px)`;
  3130. 			this.text.style.textAlign = text.align;
  3131. 			this.text.style.lineHeight = text.height;
  3132. 			
  3133. 			this.container.append(this.text);
  3134. 		} else {
  3135. 			this.text.remove();
  3136. 		}
  3137. 		
  3138. 		if (doClip) {
  3139. 			this.clip();
  3140. 		}
  3141. 	};
  3142. 	
  3143. 	$config.ready.then(() => {
  3144. 		this.updateConfig(false);
  3145. 	});
  3146. }();
  3147.  
  3148. // ELEMENT CHANGE LISTENERS
  3149.  
  3150. const observer = new function () {
  3151. 	const onResolutionChange = () => {
  3152. 		glow.handleSizeChange?.();
  3153. 	};
  3154. 	
  3155. 	const styleObserver = new MutationObserver((() => {
  3156. 		const properties = ['top', 'left', 'width', 'height', 'scale', 'rotate', 'translate', 'transform-origin'];
  3157. 		
  3158. 		let priorStyle;
  3159. 		
  3160. 		return () => {
  3161. 			// mousemove events on video with ctrlKey=true trigger this but have no effect
  3162. 			if (video.style.cssText === priorStyle) {
  3163. 				return;
  3164. 			}
  3165. 			
  3166. 			priorStyle = video.style.cssText;
  3167. 			
  3168. 			for (const property of properties) {
  3169. 				containers.background.style[property] = video.style[property];
  3170. 				containers.foreground.style[property] = video.style[property];
  3171. 				
  3172. 				// cinematics doesn't exist for embedded vids
  3173. 				if (cinematics) {
  3174. 					cinematics.style[property] = video.style[property];
  3175. 				}
  3176. 			}
  3177. 			
  3178. 			glow.handleViewChange();
  3179. 		};
  3180. 	})());
  3181. 	
  3182. 	const videoObserver = new ResizeObserver(() => {
  3183. 		viewportAngles.set();
  3184. 		
  3185. 		glow.handleSizeChange?.();
  3186. 	});
  3187. 	
  3188. 	const viewportObserver = new ResizeObserver(() => {
  3189. 		viewportAngles.set();
  3190. 		
  3191. 		crosshair.clip();
  3192. 	});
  3193. 	
  3194. 	this.start = () => {
  3195. 		video.addEventListener('resize', onResolutionChange);
  3196. 		
  3197. 		styleObserver.observe(video, {attributes: true, attributeFilter: ['style']});
  3198. 		viewportObserver.observe(viewport);
  3199. 		videoObserver.observe(video);
  3200. 		
  3201. 		glow.handleViewChange();
  3202. 	};
  3203. 	
  3204. 	this.stop = () => {
  3205. 		video.removeEventListener('resize', onResolutionChange);
  3206. 		
  3207. 		styleObserver.disconnect();
  3208. 		viewportObserver.disconnect();
  3209. 		videoObserver.disconnect();
  3210. 	};
  3211. }();
  3212.  
  3213. // NAVIGATION LISTENERS
  3214.  
  3215. const stop = () => {
  3216. 	if (stopped) {
  3217. 		return;
  3218. 	}
  3219. 	
  3220. 	stopped = true;
  3221. 	
  3222. 	enabler.stop();
  3223. 	
  3224. 	stopDrag?.();
  3225. 	
  3226. 	observer.stop();
  3227. 	
  3228. 	containers.background.remove();
  3229. 	containers.foreground.remove();
  3230. 	containers.tracker.remove();
  3231. 	crosshair.container.remove();
  3232. 	
  3233. 	return peek(true);
  3234. };
  3235.  
  3236. const start = () => {
  3237. 	if (!stopped || viewport.classList.contains('ad-showing')) {
  3238. 		return;
  3239. 	}
  3240. 	
  3241. 	stopped = false;
  3242. 	
  3243. 	observer.start();
  3244. 	
  3245. 	glow.start();
  3246. 	
  3247. 	viewport.append(containers.background, containers.foreground, containers.tracker, crosshair.container);
  3248. 	
  3249. 	// User may have a static minimum zoom greater than 1
  3250. 	zoom.constrain();
  3251. 	
  3252. 	enabler.handleChange();
  3253. };
  3254.  
  3255. const updateConfigs = () => {
  3256. 	ConfigCache.id++;
  3257. 	
  3258. 	enabler.updateConfig();
  3259. 	actions.crop.updateConfig();
  3260. 	crosshair.updateConfig();
  3261. };
  3262.  
  3263. // LISTENER ASSIGNMENTS
  3264.  
  3265. // load & navigation
  3266. (() => {
  3267. 	const getNode = (node, selector, ...selectors) => {
  3268. 		for (const child of node.children) {
  3269. 			if (child.matches(selector)) {
  3270. 				return selectors.length === 0 ? child : getNode(child, ...selectors);
  3271. 			}
  3272. 		}
  3273. 		
  3274. 		return null;
  3275. 	};
  3276. 	
  3277. 	const init = async () => {
  3278. 		if (unsafeWindow.ytplayer?.bootstrapPlayerContainer?.childElementCount > 0) {
  3279. 			// wait for the video to be moved to ytd-app
  3280. 			await new Promise((resolve) => {
  3281. 				new MutationObserver((changes, observer) => {
  3282. 					resolve();
  3283. 					
  3284. 					observer.disconnect();
  3285. 				}).observe(unsafeWindow.ytplayer.bootstrapPlayerContainer, {childList: true});
  3286. 			});
  3287. 		}
  3288. 		
  3289. 		try {
  3290. 			await $config.ready;
  3291. 		} catch (error) {
  3292. 			if (!$config.reset || !window.confirm(`${error.message}\n\nWould you like to erase your data?`)) {
  3293. 				console.error(error);
  3294. 				
  3295. 				return;
  3296. 			}
  3297. 			
  3298. 			await $config.reset();
  3299. 			
  3300. 			updateConfigs();
  3301. 		}
  3302. 		
  3303. 		const pageManager = getNode(document.body, 'ytd-app', '#content', 'ytd-page-manager');
  3304. 		
  3305. 		if (pageManager) {
  3306. 			const page = pageManager.getCurrentPage() ?? await new Promise((resolve) => {
  3307. 				new MutationObserver(([{addedNodes: [page]}], observer) => {
  3308. 					if (page) {
  3309. 						resolve(page);
  3310. 						
  3311. 						observer.disconnect();
  3312. 					}
  3313. 				}).observe(pageManager, {childList: true});
  3314. 			});
  3315. 			
  3316. 			await page.playerEl.getPlayerPromise();
  3317. 			
  3318. 			video = page.playerEl.querySelector(SELECTOR_VIDEO);
  3319. 			cinematics = page.querySelector('#cinematics');
  3320. 			
  3321. 			// navigation to a new video
  3322. 			new MutationObserver(() => {
  3323. 				video.removeEventListener('play', startIfReady);
  3324. 				
  3325. 				power.off();
  3326. 				
  3327. 				// this callback can occur after metadata loads
  3328. 				startIfReady();
  3329. 			}).observe(page, {attributes: true, attributeFilter: ['video-id']});
  3330. 			
  3331. 			// navigation to a non-video page
  3332. 			new MutationObserver(() => {
  3333. 				if (video.src === '') {
  3334. 					video.removeEventListener('play', startIfReady);
  3335. 					
  3336. 					power.off();
  3337. 				}
  3338. 			}).observe(video, {attributes: true, attributeFilter: ['src']});
  3339. 		} else {
  3340. 			video = document.body.querySelector(SELECTOR_VIDEO);
  3341. 		}
  3342. 		
  3343. 		viewport = video.parentElement.parentElement;
  3344. 		altTarget = viewport.parentElement;
  3345. 		
  3346. 		containers.foreground.style.zIndex = crosshair.container.style.zIndex = video.parentElement.computedStyleMap?.().get('z-index').value ?? 10;
  3347. 		crosshair.clip();
  3348. 		viewportAngles.set();
  3349. 		
  3350. 		const startIfReady = () => {
  3351. 			if (video.readyState >= HTMLMediaElement.HAVE_METADATA) {
  3352. 				start();
  3353. 			}
  3354. 		};
  3355. 		
  3356. 		const power = new function () {
  3357. 			this.off = () => {
  3358. 				delete this.wake;
  3359. 				
  3360. 				stop();
  3361. 			};
  3362. 			
  3363. 			this.sleep = () => {
  3364. 				this.wake ??= stop();
  3365. 			};
  3366. 		}();
  3367. 		
  3368. 		new MutationObserver((() => {
  3369. 			return () => {
  3370. 				// video end
  3371. 				if (viewport.classList.contains('ended-mode')) {
  3372. 					power.off();
  3373. 					
  3374. 					video.addEventListener('play', startIfReady, {once: true});
  3375. 				// ad start
  3376. 				} else if (viewport.classList.contains('ad-showing')) {
  3377. 					power.sleep();
  3378. 				}
  3379. 			};
  3380. 		})()).observe(viewport, {attributes: true, attributeFilter: ['class']});
  3381. 		
  3382. 		// glow initialisation requires video dimensions
  3383. 		startIfReady();
  3384. 		
  3385. 		video.addEventListener('loadedmetadata', () => {
  3386. 			if (viewport.classList.contains('ad-showing')) {
  3387. 				return;
  3388. 			}
  3389. 			
  3390. 			start();
  3391. 			
  3392. 			if (power.wake) {
  3393. 				power.wake();
  3394. 				
  3395. 				delete power.wake;
  3396. 			}
  3397. 		});
  3398. 	};
  3399. 	
  3400. 	if (!('ytPageType' in unsafeWindow) || unsafeWindow.ytPageType === 'watch') {
  3401. 		init();
  3402. 		
  3403. 		return;
  3404. 	}
  3405. 	
  3406. 	const initListener = ({detail: {newPageType}}) => {
  3407. 		if (newPageType === 'ytd-watch-flexy') {
  3408. 			init();
  3409. 			
  3410. 			document.body.removeEventListener('yt-page-type-changed', initListener);
  3411. 		}
  3412. 	};
  3413. 	
  3414. 	document.body.addEventListener('yt-page-type-changed', initListener);
  3415. })();
  3416.  
  3417. // keyboard state change
  3418.  
  3419. document.addEventListener('keydown', ({code}) => {
  3420. 	if (enabler.toggled) {
  3421. 		enabler.keys[enabler.keys.has(code) ? 'delete' : 'add'](code);
  3422. 		
  3423. 		enabler.handleChange();
  3424. 	} else if (!enabler.keys.has(code)) {
  3425. 		enabler.keys.add(code);
  3426. 		
  3427. 		enabler.handleChange();
  3428. 	}
  3429. });
  3430.  
  3431. document.addEventListener('keyup', ({code}) => {
  3432. 	if (enabler.toggled) {
  3433. 		return;
  3434. 	}
  3435. 	
  3436. 	if (enabler.keys.has(code)) {
  3437. 		enabler.keys.delete(code);
  3438. 		
  3439. 		enabler.handleChange();
  3440. 	}
  3441. });
  3442.  
  3443. window.addEventListener('blur', () => {
  3444. 	if (enabler.toggled) {
  3445. 		stopDrag?.();
  3446. 	} else {
  3447. 		enabler.keys.clear();
  3448. 		
  3449. 		enabler.handleChange();
  3450. 	}
  3451. });
  3452. })();

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