mirror of
https://github.com/zhw2590582/ArtPlayer.git
synced 2026-10-26 08:51:20 -08:00
408 lines
13 KiB
JavaScript
408 lines
13 KiB
JavaScript
import i18n from './i18n';
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import { bilibiliDanmuParseFromUrl } from './bilibili';
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import getDanmuTop from './getDanmuTop';
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export default class Danmuku {
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constructor(art, option) {
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art.i18n.update(i18n);
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this.art = art;
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this.utils = art.constructor.utils;
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this.validator = art.constructor.validator;
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this.queue = [];
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this.option = {};
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this.config(option);
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this.isStop = false;
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this.isHide = false;
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this.animationFrameTimer = null;
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this.$danmuku = art.template.$danmuku;
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art.on('video:play', this.start.bind(this));
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art.on('video:playing', this.start.bind(this));
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art.on('video:pause', this.stop.bind(this));
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art.on('video:waiting', this.stop.bind(this));
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art.on('resize', this.resize.bind(this));
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art.on('destroy', this.stop.bind(this));
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this.load();
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}
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static get option() {
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return {
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danmuku: [],
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speed: 5,
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maxlength: 50,
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margin: [10, 100],
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opacity: 1,
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fontSize: 25,
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filter: () => true,
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synchronousPlayback: false,
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};
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}
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static get scheme() {
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return {
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danmuku: 'array|function|string',
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speed: 'number',
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maxlength: 'number',
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margin: 'array',
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opacity: 'number',
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fontSize: 'number',
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filter: 'function',
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synchronousPlayback: 'boolean',
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};
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}
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get isRotate() {
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return this.art.plugins.autoOrientation && this.art.plugins.autoOrientation.state;
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}
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get marginTop() {
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const { clamp } = this.utils;
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const { $player } = this.art.template;
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const value = this.option.margin[0];
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if (typeof value === 'number') {
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return clamp(value, 0, $player.clientHeight);
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}
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if (typeof value === 'string' && value.endsWith('%')) {
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const ratio = parseFloat(value) / 100;
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return clamp($player.clientHeight * ratio, 0, $player.clientHeight);
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}
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return Danmuku.option.margin[0];
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}
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get marginBottom() {
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const { clamp } = this.utils;
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const { $player } = this.art.template;
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const value = this.option.margin[1];
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if (typeof value === 'number') {
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return clamp(value, 0, $player.clientHeight);
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}
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if (typeof value === 'string' && value.endsWith('%')) {
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const ratio = parseFloat(value) / 100;
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return clamp($player.clientHeight * ratio, 0, $player.clientHeight);
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}
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return Danmuku.option.margin[1];
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}
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filter(state, callback) {
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return this.queue.filter((danmu) => danmu.$state === state).map(callback);
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}
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getRect(ref, key) {
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const rect = ref.getBoundingClientRect();
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const bottom = rect.bottom;
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const height = rect.height;
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const left = rect.left;
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const right = rect.right;
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const top = rect.top;
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const width = rect.width;
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const x = rect.x;
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const y = rect.y;
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const result = {
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bottom,
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height,
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left,
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right,
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top,
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width,
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x,
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y,
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};
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if (this.isRotate) {
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result.bottom = left;
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result.left = top;
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result.top = right;
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result.right = bottom;
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result.height = width;
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result.width = height;
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result.x = y;
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result.y = x;
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}
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return key ? result[key] : result;
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}
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getDanmuRef() {
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const result = this.queue.find((danmu) => {
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return danmu.$ref && danmu.$state === 'wait';
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});
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if (result) {
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const { $ref } = result;
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result.$ref = null;
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return $ref;
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}
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const $ref = document.createElement('div');
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$ref.style.cssText = `
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user-select: none;
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position: absolute;
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white-space: pre;
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pointer-events: none;
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perspective: 500px;
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display: inline-block;
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will-change: transform;
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font-family: SimHei, "Microsoft JhengHei", Arial, Helvetica, sans-serif;
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font-weight: normal;
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line-height: 1.125;
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text-shadow: rgb(0, 0, 0) 1px 0px 1px, rgb(0, 0, 0) 0px 1px 1px, rgb(0, 0, 0) 0px -1px 1px, rgb(0, 0, 0) -1px 0px 1px;
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`;
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return $ref;
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}
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async load() {
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this.queue = [];
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this.$danmuku.innerText = '';
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let danmus = [];
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try {
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if (typeof this.option.danmuku === 'function') {
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danmus = await this.option.danmuku();
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} else if (typeof this.option.danmuku.then === 'function') {
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danmus = await this.option.danmuku;
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} else if (typeof this.option.danmuku === 'string') {
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danmus = await bilibiliDanmuParseFromUrl(this.option.danmuku);
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} else {
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danmus = this.option.danmuku;
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}
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this.utils.errorHandle(Array.isArray(danmus), 'Danmuku need return an array as result');
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this.art.emit('artplayerPluginDanmuku:loaded', danmus);
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danmus.forEach(this.emit.bind(this));
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} catch (error) {
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this.art.emit('artplayerPluginDanmuku:error', error);
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throw error;
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}
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return this;
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}
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config(option) {
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const { clamp } = this.utils;
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this.option = Object.assign({}, Danmuku.option, this.option, option);
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this.validator(this.option, Danmuku.scheme);
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this.option.speed = clamp(this.option.speed, 1, 10);
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this.option.maxlength = clamp(this.option.maxlength, 10, 100);
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this.option.opacity = clamp(this.option.opacity, 0, 1);
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this.option.fontSize = clamp(this.option.fontSize, 12, 100);
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this.art.emit('artplayerPluginDanmuku:config', this.option);
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return this;
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}
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continue() {
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const { $player } = this.art.template;
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const playerWidth = this.getRect($player, 'width');
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this.filter('stop', (danmu) => {
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danmu.$state = 'emit';
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danmu.$ref.dataset.state = 'emit';
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danmu.$lastStartTime = Date.now();
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switch (danmu.mode) {
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case 0: {
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const danmuWidth = this.getRect(danmu.$ref, 'width');
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const translateX = playerWidth + danmuWidth;
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danmu.$ref.style.transform = `translateX(${-translateX}px) translateY(0px) translateZ(0px)`;
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danmu.$ref.style.transition = `transform ${danmu.$restTime}s linear 0s`;
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break;
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}
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default:
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break;
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}
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});
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return this;
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}
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suspend() {
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const { $player } = this.art.template;
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this.filter('emit', (danmu) => {
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danmu.$state = 'stop';
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danmu.$ref.dataset.state = 'stop';
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switch (danmu.mode) {
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case 0: {
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const { left: playerLeft, width: playerWidth } = this.getRect($player);
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const { left: danmuLeft } = this.getRect(danmu.$ref);
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const translateX = playerWidth - (danmuLeft - playerLeft);
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danmu.$ref.style.transform = `translateX(${-translateX}px) translateY(0px) translateZ(0px)`;
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danmu.$ref.style.transition = 'transform 0s linear 0s';
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break;
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}
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default:
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break;
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}
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});
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return this;
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}
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resize() {
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const { $player } = this.art.template;
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const { width: playerWidth } = this.getRect($player);
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this.filter('wait', (danmu) => {
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if (danmu.$ref) {
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danmu.$ref.style.border = 'none';
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danmu.$ref.style.left = `${playerWidth}px`;
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danmu.$ref.style.marginLeft = '0px';
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danmu.$ref.style.transform = 'translateX(0px) translateY(0px) translateZ(0px)';
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danmu.$ref.style.transition = 'transform 0s linear 0s';
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}
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});
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return this;
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}
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update() {
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const { $player } = this.art.template;
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this.animationFrameTimer = window.requestAnimationFrame(() => {
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if (this.art.playing && !this.isHide) {
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const playerWidth = this.getRect($player, 'width');
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this.filter('emit', (danmu) => {
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const time = (Date.now() - danmu.$lastStartTime) / 1000;
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danmu.$emitTime += time;
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danmu.$restTime -= time;
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danmu.$lastStartTime = Date.now();
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if (danmu.$restTime <= 0) {
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danmu.$state = 'wait';
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danmu.$ref.dataset.state = 'wait';
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danmu.$ref.style.border = 'none';
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danmu.$ref.style.visibility = 'hidden';
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danmu.$ref.style.left = `${playerWidth}px`;
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danmu.$ref.style.marginLeft = '0px';
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danmu.$ref.style.transform = 'translateX(0px) translateY(0px) translateZ(0px)';
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danmu.$ref.style.transition = 'transform 0s linear 0s';
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}
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});
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this.queue
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.filter(
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(danmu) =>
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this.art.currentTime + 0.1 >= danmu.time &&
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danmu.time >= this.art.currentTime - 0.1 &&
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danmu.$state === 'wait',
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)
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.forEach((danmu) => {
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danmu.$ref = this.getDanmuRef(this.queue);
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this.$danmuku.appendChild(danmu.$ref);
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danmu.$ref.style.visibility = 'visible';
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danmu.$ref.style.opacity = this.option.opacity;
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danmu.$ref.style.fontSize = `${this.option.fontSize}px`;
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danmu.$ref.innerText = danmu.text;
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danmu.$ref.style.color = danmu.color || '#fff';
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danmu.$ref.style.border = danmu.border ? `1px solid ${danmu.color || '#fff'}` : 'none';
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danmu.$restTime =
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this.option.synchronousPlayback && this.art.playbackRate
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? this.option.speed / Number(this.art.playbackRate)
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: this.option.speed;
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const danmuWidth = this.getRect(danmu.$ref, 'width');
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const danmuTop = getDanmuTop(this, danmu);
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danmu.$state = 'emit';
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danmu.$ref.dataset.state = 'emit';
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danmu.$lastStartTime = Date.now();
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switch (danmu.mode) {
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case 0: {
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danmu.$ref.style.left = `${playerWidth}px`;
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danmu.$ref.style.top = `${danmuTop}px`;
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const translateX = playerWidth + danmuWidth;
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danmu.$ref.style.transform = `translateX(${-translateX}px) translateY(0px) translateZ(0px)`;
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danmu.$ref.style.transition = `transform ${danmu.$restTime}s linear 0s`;
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break;
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}
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case 1:
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danmu.$ref.style.top = `${danmuTop}px`;
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danmu.$ref.style.left = '50%';
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danmu.$ref.style.marginLeft = `-${danmuWidth / 2}px`;
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break;
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default:
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break;
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}
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});
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}
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if (!this.isStop) {
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this.update();
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}
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});
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return this;
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}
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stop() {
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this.isStop = true;
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this.suspend();
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window.cancelAnimationFrame(this.animationFrameTimer);
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this.art.emit('artplayerPluginDanmuku:stop');
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return this;
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}
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start() {
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this.isStop = false;
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this.continue();
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this.update();
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this.art.emit('artplayerPluginDanmuku:start');
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return this;
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}
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show() {
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this.isHide = false;
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this.$danmuku.style.display = 'block';
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this.art.emit('artplayerPluginDanmuku:show');
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return this;
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}
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hide() {
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this.isHide = true;
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this.$danmuku.style.display = 'none';
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this.art.emit('artplayerPluginDanmuku:hide');
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return this;
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}
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emit(danmu) {
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this.validator(danmu, {
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text: 'string',
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mode: 'number|undefined',
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color: 'string|undefined',
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time: 'number|undefined',
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border: 'boolean|undefined',
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});
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if (!this.option.filter(danmu)) return this;
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if (!danmu.text.trim()) return this;
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if (danmu.text.length > this.option.maxlength) return this;
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if (danmu.time) {
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danmu.time = this.utils.clamp(danmu.time, 0, Infinity);
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} else {
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danmu.time = this.art.currentTime + 0.5;
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}
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this.queue.push({
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mode: 0,
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...danmu,
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$state: 'wait',
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$ref: null,
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$emitTime: 0,
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$restTime: 0,
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$lastStartTime: 0,
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});
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return this;
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}
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}
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