@qier-player/danmaku
Version:
Powerful danmaku, support many features.
92 lines • 3.62 kB
JavaScript
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
if (typeof b !== "function" && b !== null)
throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
t[p] = s[p];
}
return t;
};
return __assign.apply(this, arguments);
};
import { createDanmu } from '../helper';
import { isEmptyArray } from '../utils/is';
import BaseRolling from './base-rolling';
var BaseFixed = /** @class */ (function (_super) {
__extends(BaseFixed, _super);
function BaseFixed(danmaku, el, config, options) {
var _this = _super.call(this, danmaku, el, config, options) || this;
_this.danmaku = danmaku;
_this.elHeight = el.offsetHeight;
return _this;
}
BaseFixed.prototype.add = function (danmu) {
var trackId = this.findTrack();
if (trackId === -1) {
return false;
}
var text = danmu.text, size = danmu.size, color = danmu.color, offset = danmu.offset;
var danmuDom = createDanmu(text, color, size, this.trackHeight, offset);
this.el.appendChild(danmuDom);
var width = danmuDom.offsetWidth;
// 计算位置
var track = this.tracks[trackId];
var trackWidth = this.trackWidth;
// 居中
var danmuOffset = (trackWidth - width) / 2;
var normalizedDanmu = __assign(__assign({}, danmu), { offset: danmuOffset, duration: this.duration, width: width });
this.objToElm.set(normalizedDanmu, danmuDom);
this.elmToObj.set(danmuDom, normalizedDanmu);
track.push(normalizedDanmu);
return true;
};
BaseFixed.prototype.findTrack = function () {
var idx = -1;
for (var i = 0; i < this.tracks.length; ++i) {
if (isEmptyArray(this.tracks[i].danmus)) {
idx = i;
break;
}
}
return idx;
};
BaseFixed.prototype.extractDanmu = function () {
var isAdded;
for (var i = 0; i < this.waitingQueue.length;) {
isAdded = this.add(this.waitingQueue[i]);
// 若有一次无法添加成功，说明无轨道可用，终止剩余弹幕的 add 尝试
if (!isAdded) {
break;
}
this.waitingQueue.shift();
}
};
BaseFixed.prototype.removeElementFromTrack = function (track, removedIdx) {
var danmu = track.danmus[removedIdx];
if (!danmu) {
return;
}
var danmuDom = this.objToElm.get(danmu);
this.objToElm.delete(danmu);
this.elmToObj.delete(danmuDom);
this.removeElement(danmuDom);
};
return BaseFixed;
}(BaseRolling));
export default BaseFixed;
//# sourceMappingURL=base-fixed.js.map