126 lines
3.2 KiB
JavaScript
126 lines
3.2 KiB
JavaScript
// 赛马竞猜悬浮按钮组件，负责拖动位置持久化和打开赛马面板。
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const HORSE_RACE_FAB_STORAGE_KEY = "horse_race_fab_pos";
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/**
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* 安全读取赛马悬浮按钮保存的位置。
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*
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* @returns {{x?: number, y?: number}|null}
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*/
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function readSavedHorseRaceFabPosition() {
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try {
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return JSON.parse(localStorage.getItem(HORSE_RACE_FAB_STORAGE_KEY) || "null");
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} catch (error) {
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return null;
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}
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}
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/**
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* 创建赛马竞猜悬浮按钮 Alpine 组件。
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*
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* @returns {Record<string, any>}
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*/
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export function horseRaceFab() {
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const saved = readSavedHorseRaceFabPosition();
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return {
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visible: false,
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posX: saved?.x ?? 80,
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posY: saved?.y ?? 90,
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dragging: false,
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_startX: 0,
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_startY: 0,
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_origX: 0,
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_origY: 0,
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_moved: false,
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/**
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* 开始拖动赛马悬浮按钮。
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*
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* @param {PointerEvent} event 指针事件
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* @returns {void}
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*/
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startDrag(event) {
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this.dragging = true;
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this._moved = false;
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this._startX = event.clientX;
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this._startY = event.clientY;
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this._origX = this.posX;
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this._origY = this.posY;
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event.currentTarget.setPointerCapture?.(event.pointerId);
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},
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/**
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* 拖动过程中约束按钮不超出视口。
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*
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* @param {PointerEvent} event 指针事件
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* @returns {void}
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*/
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onDrag(event) {
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if (!this.dragging) {
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return;
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}
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const dx = event.clientX - this._startX;
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const dy = event.clientY - this._startY;
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if (Math.abs(dx) > 3 || Math.abs(dy) > 3) {
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this._moved = true;
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}
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// 赛马按钮使用 right/bottom 定位，拖动方向需要反向换算。
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this.posX = Math.max(4, Math.min(window.innerWidth - 132, this._origX - dx));
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this.posY = Math.max(4, Math.min(window.innerHeight - 132, this._origY - dy));
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},
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/**
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* 结束拖动；没有移动时按点击处理并打开赛马面板。
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*
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* @returns {void}
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*/
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endDrag() {
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if (!this.dragging) {
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return;
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}
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this.dragging = false;
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localStorage.setItem(HORSE_RACE_FAB_STORAGE_KEY, JSON.stringify({
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x: this.posX,
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y: this.posY,
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}));
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if (!this._moved) {
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this.openPanel();
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}
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},
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/**
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* 打开赛马主面板。
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*
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* @returns {void}
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*/
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openPanel() {
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const panel = document.getElementById("horse-race-panel");
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if (!panel || typeof window.Alpine?.$data !== "function") {
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return;
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}
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window.Alpine.$data(panel).openFromHall();
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},
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};
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}
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/**
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* 挂载赛马悬浮按钮全局组件名，兼容 Blade 的 x-data。
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*
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* @returns {void}
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*/
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export function bindHorseRaceFabControls() {
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if (typeof window === "undefined") {
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return;
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}
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window.horseRaceFab = horseRaceFab;
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}
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