1211 lines
42 KiB
TypeScript
1211 lines
42 KiB
TypeScript
/**
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* 实时时间轴组件 - TypeScript + Canvas API 实现
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* 用于展示真实时间坐标轴，适合实时数据可视化
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*/
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import { format } from "date-fns";
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/** 缩放模式枚举 */
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enum ZoomMode {
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/** 以鼠标位置为中心缩放 */
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MousePosition = 'mouse',
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/** 以视口中心缩放 */
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ViewportCenter = 'center',
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/** 标记模式 */
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MarkMode = 'mark'
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}
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/** 时间格式化级别 */
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enum TimeFormatLevel {
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Minute = 'minute', // 分钟级别
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FiveMinutes = '5min', // 5分钟级别
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TenMinutes = '10min', // 10分钟级别
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HalfHour = '30min', // 半小时级别
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Hour = 'hour', // 小时级别
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ThreeHours = '3hour', // 3小时级别
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SixHours = '6hour', // 6小时级别
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Day = 'day', // 天级别
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}
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/** 刻度级别配置 */
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interface ScaleLevel {
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/** 级别标识 */
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level: TimeFormatLevel;
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/** 主刻度时间间隔（毫秒） */
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majorInterval: number;
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/** 次要刻度数量 */
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minorTicks: number;
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/** 最小像素间距（避免刻度过密） */
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minPixelDistance: number;
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/** 最大像素间距（避免刻度过疏） */
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maxPixelDistance: number;
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/** 格式化函数 */
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formatter: (date: Date) => { primary: string; secondary?: string };
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}
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/** 单个刻度信息 */
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interface Tick {
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/** 时间值（时间戳） */
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timestamp: number;
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/** 屏幕位置 */
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position: number;
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/** 是否为主刻度 */
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isMajor: boolean;
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/** 主标签文本 */
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primaryLabel?: string;
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/** 次标签文本（如日期） */
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secondaryLabel?: string;
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}
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/** 时间标记 */
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interface TimeMark {
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/** 时间戳 */
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timestamp: number;
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/** 标记颜色 */
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color?: string;
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/** 标记标签 */
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label?: string;
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/** 标记类型 */
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type?: 'custom' | 'event' | 'milestone';
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}
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/** 时间轴配置 */
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interface TimelineConfig {
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/** 初始中心时间（时间戳，默认当前时间） */
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initialCenterTime?: number;
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/** 初始显示范围（毫秒，默认1小时） */
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initialTimeRange?: number;
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/** 缩放模式 */
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zoomMode?: ZoomMode;
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/** 缩放灵敏度 */
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zoomSensitivity?: number;
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/** 时区偏移（分钟） */
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timezoneOffset?: number;
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/** 颜色配置 */
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colors?: {
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background?: string;
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grid?: string;
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majorTick?: string;
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minorTick?: string;
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primaryLabel?: string;
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secondaryLabel?: string;
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currentTime?: string;
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weekend?: string;
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timeMark?: string;
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timeMarkLabel?: string;
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};
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/** 尺寸配置 */
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sizes?: {
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majorTickHeight?: number;
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minorTickHeight?: number;
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labelOffset?: number;
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primaryFontSize?: number;
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secondaryFontSize?: number;
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timeMarkHeight?: number;
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timeMarkWidth?: number;
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};
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/** 是否显示当前时间线 */
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showCurrentTime?: boolean;
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/** 是否高亮周末 */
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highlightWeekends?: boolean;
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/** 时间标记列表 */
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timeMarks?: TimeMark[];
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}
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/** 时间工具类 */
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class TimeUtils {
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/** 获取时间的分钟起点 */
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static getMinuteStart(timestamp: number): number {
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const date = new Date(timestamp);
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date.setSeconds(0, 0);
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return date.getTime();
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}
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/** 获取时间的小时起点 */
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static getHourStart(timestamp: number): number {
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const date = new Date(timestamp);
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date.setMinutes(0, 0, 0);
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return date.getTime();
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}
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/** 获取时间的天起点 */
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static getDayStart(timestamp: number): number {
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const date = new Date(timestamp);
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date.setHours(0, 0, 0, 0);
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return date.getTime();
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}
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/** 获取最近的刻度时间 */
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static getNearestTick(timestamp: number, interval: number): number {
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return Math.floor(timestamp / interval) * interval;
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}
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/** 判断是否为周末 */
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static isWeekend(timestamp: number): boolean {
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const day = new Date(timestamp).getDay();
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return day === 0 || day === 6;
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}
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/** 格式化时间 */
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static format(date: Date, pattern: string): string {
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const year = date.getFullYear();
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const month = String(date.getMonth() + 1).padStart(2, '0');
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const day = String(date.getDate()).padStart(2, '0');
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const hours = String(date.getHours()).padStart(2, '0');
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const minutes = String(date.getMinutes()).padStart(2, '0');
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const seconds = String(date.getSeconds()).padStart(2, '0');
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return pattern
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.replace('YYYY', String(year))
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.replace('MM', month)
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.replace('DD', day)
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.replace('HH', hours)
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.replace('mm', minutes)
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.replace('ss', seconds);
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}
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/** 获取月份名称 */
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static getMonthName(month: number, short: boolean = true): string {
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const months = short ?
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['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'] :
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['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
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return months[month];
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}
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/** 获取星期名称 */
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static getWeekdayName(day: number, short: boolean = true): string {
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const weekdays = short ?
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['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'] :
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['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
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return weekdays[day];
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}
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}
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/** 视口管理器 */
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class Viewport {
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/** 视口中心对应的时间戳 */
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private centerTime: number;
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/** 时间范围（毫秒） */
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private timeRange: number;
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/** 视口宽度 */
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private width: number;
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/** 视口高度 */
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private height: number;
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/** 时间范围的最小和最大限制 */
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private readonly MIN_RANGE = 240 * 1000;
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private readonly MAX_RANGE = 10 * 24 * 60 * 60 * 1000;
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constructor(width: number = 800, height: number = 100) {
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this.centerTime = Date.now();
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this.timeRange = 60 * 60 * 1000; // 默认显示1小时
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this.width = width;
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this.height = height;
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}
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/** 获取缩放级别（像素/毫秒） */
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getZoomLevel(): number {
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return this.width / this.timeRange;
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}
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/** 将时间转换为屏幕坐标 */
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timeToScreen(timestamp: number): number {
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const offset = timestamp - this.centerTime;
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const ratio = offset / this.timeRange;
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return this.width / 2 + ratio * this.width;
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}
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/** 将屏幕坐标转换为时间 */
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screenToTime(x: number, nearest: boolean = false, ticks?: Tick[]): number {
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const ratio = (x - this.width / 2) / this.width;
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const time = this.centerTime + ratio * this.timeRange;
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if (nearest && ticks && ticks.length > 0) {
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// 找到距离点击位置最近的刻度
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let nearestTick: Tick | null = null;
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let minDistance = Infinity;
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for (const tick of ticks) {
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const distance = Math.abs(tick.position - x);
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if (distance < minDistance) {
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minDistance = distance;
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nearestTick = tick;
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}
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}
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// 如果最近的刻度在阈值内（20像素），则返回该刻度的时间戳
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if (nearestTick && minDistance < 3) {
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return nearestTick.timestamp;
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}
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}
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return time;
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}
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/** 获取可见时间范围 */
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getVisibleRange(): [number, number] {
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const halfRange = this.timeRange / 2;
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return [
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this.centerTime - halfRange,
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this.centerTime + halfRange
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];
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}
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/** 平移视口 */
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pan(deltaX: number): void {
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const timeDelta = -(deltaX / this.width) * this.timeRange;
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this.centerTime += timeDelta;
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}
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/** 以视口中心缩放 */
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zoom(factor: number): void {
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this.timeRange /= factor;
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this.timeRange = Math.max(this.MIN_RANGE, Math.min(this.MAX_RANGE, this.timeRange));
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}
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/** 以指定位置为中心缩放 */
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zoomAt(factor: number, screenX: number): void {
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const timeAtMouse = this.screenToTime(screenX);
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this.zoom(factor);
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const newTimeAtMouse = this.screenToTime(screenX);
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const timeCorrection = timeAtMouse - newTimeAtMouse;
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this.centerTime += timeCorrection;
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}
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/** 更新视口尺寸 */
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updateSize(width: number, height: number): void {
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this.width = width;
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this.height = height;
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}
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/** 跳转到指定时间 */
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goToTime(timestamp: number): void {
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this.centerTime = timestamp;
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}
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/** 设置显示范围 */
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setTimeRange(range: number): void {
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this.timeRange = Math.max(this.MIN_RANGE, Math.min(this.MAX_RANGE, range));
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}
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// Getters
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getCenterTime(): number { return this.centerTime; }
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getTimeRange(): number { return this.timeRange; }
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getWidth(): number { return this.width; }
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getHeight(): number { return this.height; }
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}
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/** 刻度管理器 */
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class ScaleManager {
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private scaleLevels: ScaleLevel[];
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private currentLevel: ScaleLevel | null = null;
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constructor() {
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this.scaleLevels = [
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{
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level: TimeFormatLevel.Minute,
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majorInterval: 60 * 1000, // 1分钟
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minorTicks: 4, // 每15秒一个次刻度
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minPixelDistance: 80,
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maxPixelDistance: 200,
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formatter: (date: Date) => ({
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primary: TimeUtils.format(date, 'HH:mm'),
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secondary: this.shouldShowDate(date) ? TimeUtils.format(date, 'MM/DD') : undefined
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})
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},
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{
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level: TimeFormatLevel.FiveMinutes,
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majorInterval: 5 * 60 * 1000, // 5分钟
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minorTicks: 5, // 每分钟一个次刻度
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minPixelDistance: 60,
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maxPixelDistance: 150,
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formatter: (date: Date) => ({
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primary: TimeUtils.format(date, 'HH:mm'),
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secondary: this.shouldShowDate(date) ? TimeUtils.format(date, 'MM/DD') : undefined
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})
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},
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{
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level: TimeFormatLevel.TenMinutes,
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majorInterval: 10 * 60 * 1000, // 10分钟
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minorTicks: 2, // 每5分钟一个次刻度
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minPixelDistance: 50,
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maxPixelDistance: 120,
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formatter: (date: Date) => ({
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primary: TimeUtils.format(date, 'HH:mm'),
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secondary: this.shouldShowDate(date) ? TimeUtils.format(date, 'MM/DD') : undefined
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})
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},
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{
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level: TimeFormatLevel.HalfHour,
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majorInterval: 30 * 60 * 1000, // 30分钟
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minorTicks: 3, // 每10分钟一个次刻度
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minPixelDistance: 50,
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maxPixelDistance: 120,
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formatter: (date: Date) => ({
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primary: TimeUtils.format(date, 'HH:mm'),
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secondary: this.shouldShowDate(date) ?
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`${TimeUtils.getMonthName(date.getMonth())} ${date.getDate()}` : undefined
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})
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},
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{
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level: TimeFormatLevel.Hour,
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majorInterval: 60 * 60 * 1000, // 1小时
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minorTicks: 2, // 每30分钟一个次刻度
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minPixelDistance: 50,
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maxPixelDistance: 120,
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formatter: (date: Date) => ({
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primary: TimeUtils.format(date, 'HH:00'),
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secondary: date.getHours() === 0 ?
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`${TimeUtils.getMonthName(date.getMonth())} ${date.getDate()}` : undefined
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})
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},
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{
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level: TimeFormatLevel.ThreeHours,
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majorInterval: 3 * 60 * 60 * 1000, // 3小时
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minorTicks: 3, // 每小时一个次刻度
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minPixelDistance: 50,
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maxPixelDistance: 120,
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formatter: (date: Date) => ({
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primary: TimeUtils.format(date, 'HH:00'),
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secondary: date.getHours() === 0 ?
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`${TimeUtils.getWeekdayName(date.getDay())}, ${TimeUtils.getMonthName(date.getMonth())} ${date.getDate()}` : undefined
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})
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},
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{
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level: TimeFormatLevel.SixHours,
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majorInterval: 6 * 60 * 60 * 1000, // 6小时
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minorTicks: 3, // 每2小时一个次刻度
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minPixelDistance: 60,
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maxPixelDistance: 150,
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formatter: (date: Date) => ({
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primary: date.getHours() === 0 ? '00:00' : `${TimeUtils.format(date, 'HH:00')}`,
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secondary: date.getHours() === 0 ?
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`${TimeUtils.getWeekdayName(date.getDay())}, ${TimeUtils.getMonthName(date.getMonth())} ${date.getDate()}` :
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(date.getHours() === 12 ? TimeUtils.format(date, 'MM/DD') : undefined)
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})
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},
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{
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level: TimeFormatLevel.Day,
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majorInterval: 24 * 60 * 60 * 1000, // 1天
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minorTicks: 4, // 每6小时一个次刻度
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minPixelDistance: 80,
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maxPixelDistance: 200,
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formatter: (date: Date) => ({
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primary: `${TimeUtils.getMonthName(date.getMonth())} ${date.getDate()}`,
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secondary: `${TimeUtils.getWeekdayName(date.getDay())}, ${date.getFullYear()}`
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})
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}
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];
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}
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/** 判断是否应该显示日期 */
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private shouldShowDate(date: Date): boolean {
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// 在午夜时显示日期，或者是每天的第一个刻度
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return date.getHours() === 0 && date.getMinutes() === 0;
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}
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/** 根据缩放级别选择合适的刻度级别 */
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selectLevel(viewport: Viewport): ScaleLevel {
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const zoomLevel = viewport.getZoomLevel();
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for (const level of this.scaleLevels) {
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const pixelDistance = level.majorInterval * zoomLevel;
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if (pixelDistance >= level.minPixelDistance && pixelDistance <= level.maxPixelDistance) {
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this.currentLevel = level;
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return level;
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}
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}
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// 如果没有找到合适的级别，选择最接近的
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const pixelDistances = this.scaleLevels.map(level => level.majorInterval * zoomLevel);
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const targetDistance = 100; // 目标像素距离
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const closestIndex = pixelDistances.reduce((bestIdx, dist, idx) => {
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const bestDist = pixelDistances[bestIdx];
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return Math.abs(dist - targetDistance) < Math.abs(bestDist - targetDistance) ? idx : bestIdx;
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}, 0);
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this.currentLevel = this.scaleLevels[closestIndex];
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return this.currentLevel;
|
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}
|
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|
||
/** 计算可见范围内的刻度 */
|
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calculateTicks(viewport: Viewport): Tick[] {
|
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const ticks: Tick[] = [];
|
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const [startTime, endTime] = viewport.getVisibleRange();
|
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const level = this.selectLevel(viewport);
|
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|
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// 计算第一个主刻度位置
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const firstMajor = TimeUtils.getNearestTick(startTime, level.majorInterval);
|
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// 生成主刻度
|
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let currentTime = firstMajor;
|
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while (currentTime <= endTime + level.majorInterval) {
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const position = viewport.timeToScreen(currentTime);
|
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if (position >= -50 && position <= viewport.getWidth() + 50) {
|
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const date = new Date(currentTime);
|
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const labels = level.formatter(date);
|
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|
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ticks.push({
|
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timestamp: currentTime,
|
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position,
|
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isMajor: true,
|
||
primaryLabel: labels.primary,
|
||
secondaryLabel: labels.secondary
|
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});
|
||
|
||
// 生成次刻度
|
||
if (level.minorTicks > 0) {
|
||
const minorInterval = level.majorInterval / (level.minorTicks + 1);
|
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for (let i = 1; i <= level.minorTicks; i++) {
|
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const minorTime = currentTime + minorInterval * i;
|
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if (minorTime <= endTime) {
|
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const minorPosition = viewport.timeToScreen(minorTime);
|
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if (minorPosition >= 0 && minorPosition <= viewport.getWidth()) {
|
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ticks.push({
|
||
timestamp: minorTime,
|
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position: minorPosition,
|
||
isMajor: false
|
||
});
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
currentTime += level.majorInterval;
|
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}
|
||
|
||
return ticks;
|
||
}
|
||
|
||
/** 获取当前刻度级别 */
|
||
getCurrentLevel(): ScaleLevel | null {
|
||
return this.currentLevel;
|
||
}
|
||
}
|
||
|
||
/** 交互处理器 */
|
||
class InteractionHandler {
|
||
private isDragging: boolean = false;
|
||
private lastMousePos: { x: number; y: number } | null = null;
|
||
private startMousePos: { x: number; y: number } | null = null;
|
||
private zoomSensitivity: number;
|
||
private zoomMode: ZoomMode;
|
||
private readonly CLICK_THRESHOLD = 10; // 点击阈值，像素
|
||
|
||
constructor(zoomMode: ZoomMode = ZoomMode.MousePosition, sensitivity: number = 0.001) {
|
||
this.zoomMode = zoomMode;
|
||
this.zoomSensitivity = sensitivity;
|
||
}
|
||
|
||
/** 计算人体工学优化的缩放因子 */
|
||
calculateZoomFactor(scrollDelta: number): number {
|
||
const baseFactor = 1.15;
|
||
if (scrollDelta > 0) {
|
||
return Math.pow(baseFactor, scrollDelta * this.zoomSensitivity * 100);
|
||
} else {
|
||
return 1 / Math.pow(baseFactor, -scrollDelta * this.zoomSensitivity * 100);
|
||
}
|
||
}
|
||
|
||
/** 开始拖拽 */
|
||
startDrag(x: number, y: number): void {
|
||
this.isDragging = true;
|
||
this.lastMousePos = { x, y };
|
||
this.startMousePos = { x, y };
|
||
}
|
||
|
||
/** 结束拖拽 */
|
||
endDrag(): void {
|
||
this.isDragging = false;
|
||
|
||
}
|
||
|
||
/** 判断是否为点击 */
|
||
isClick(): boolean {
|
||
if (!this.startMousePos || !this.lastMousePos) return false;
|
||
|
||
const deltaX = Math.abs(this.lastMousePos.x - this.startMousePos.x);
|
||
const deltaY = Math.abs(this.lastMousePos.y - this.startMousePos.y);
|
||
|
||
return deltaX <= this.CLICK_THRESHOLD;
|
||
}
|
||
|
||
/** 处理鼠标移动 */
|
||
handleMouseMove(x: number, y: number, viewport: Viewport): void {
|
||
if (this.isDragging && this.lastMousePos) {
|
||
const deltaX = x - this.lastMousePos.x;
|
||
viewport.pan(deltaX);
|
||
this.lastMousePos = { x, y };
|
||
}
|
||
}
|
||
|
||
/** 处理滚轮事件 */
|
||
handleWheel(deltaY: number, mouseX: number, viewport: Viewport, markX?: number): void {
|
||
const zoomFactor = this.calculateZoomFactor(-deltaY);
|
||
|
||
if (this.zoomMode === ZoomMode.MarkMode && markX) {
|
||
viewport.zoomAt(zoomFactor, markX);
|
||
return;
|
||
} else if (this.zoomMode === ZoomMode.MarkMode) {
|
||
viewport.zoomAt(zoomFactor, mouseX);
|
||
return;
|
||
}
|
||
|
||
if (this.zoomMode === ZoomMode.MousePosition) {
|
||
viewport.zoomAt(zoomFactor, mouseX);
|
||
} else {
|
||
viewport.zoom(zoomFactor);
|
||
}
|
||
}
|
||
|
||
|
||
|
||
// Getters & Setters
|
||
getZoomMode(): ZoomMode { return this.zoomMode; }
|
||
setZoomMode(mode: ZoomMode): void { this.zoomMode = mode; }
|
||
setZoomSensitivity(sensitivity: number): void {
|
||
this.zoomSensitivity = Math.max(0.0001, Math.min(0.01, sensitivity));
|
||
}
|
||
getIsDragging(): boolean { return this.isDragging; }
|
||
}
|
||
|
||
/** 实时时间轴主类 */
|
||
class RealTimeTimeline {
|
||
private canvas: HTMLCanvasElement;
|
||
private ctx: CanvasRenderingContext2D;
|
||
private viewport: Viewport;
|
||
private scaleManager: ScaleManager;
|
||
private interaction: InteractionHandler;
|
||
private config: Required<TimelineConfig>;
|
||
private animationFrameId: number | null = null;
|
||
private currentTimeUpdateInterval: number | null = null;
|
||
|
||
constructor(canvas: HTMLCanvasElement, config?: TimelineConfig) {
|
||
this.canvas = canvas;
|
||
const ctx = canvas.getContext('2d');
|
||
if (!ctx) {
|
||
throw new Error('Failed to get 2D context');
|
||
}
|
||
this.ctx = ctx;
|
||
|
||
// 应用配置
|
||
this.config = this.mergeConfig(config);
|
||
|
||
// 初始化组件
|
||
this.viewport = new Viewport(canvas.width, canvas.height);
|
||
this.viewport.goToTime(this.config.initialCenterTime);
|
||
if (this.config.initialTimeRange) {
|
||
this.viewport.setTimeRange(this.config.initialTimeRange);
|
||
}
|
||
|
||
this.scaleManager = new ScaleManager();
|
||
this.interaction = new InteractionHandler(
|
||
this.config.zoomMode,
|
||
this.config.zoomSensitivity
|
||
);
|
||
|
||
// 设置画布事件监听
|
||
this.setupEventListeners();
|
||
|
||
// 开始渲染
|
||
this.render();
|
||
|
||
// 如果显示当前时间线，定期更新
|
||
if (this.config.showCurrentTime) {
|
||
this.startCurrentTimeUpdate();
|
||
}
|
||
}
|
||
|
||
/** 合并配置 */
|
||
private mergeConfig(config?: TimelineConfig): Required<TimelineConfig> {
|
||
const defaultConfig: Required<TimelineConfig> = {
|
||
initialCenterTime: Date.now(),
|
||
initialTimeRange: 60 * 60 * 1000, // 1小时
|
||
zoomMode: ZoomMode.MousePosition,
|
||
zoomSensitivity: 0.001,
|
||
timezoneOffset: new Date().getTimezoneOffset(),
|
||
colors: {
|
||
background: '#1a1a1a',
|
||
grid: '#2a2a2a',
|
||
majorTick: '#d0d0d0',
|
||
minorTick: '#606060',
|
||
primaryLabel: '#e0e0e0',
|
||
secondaryLabel: '#a0a0a0',
|
||
currentTime: '#ff4444',
|
||
weekend: 'rgba(100, 100, 255, 0.05)',
|
||
timeMark: '#ff6b6b',
|
||
timeMarkLabel: '#ffffff'
|
||
},
|
||
sizes: {
|
||
majorTickHeight: 12,
|
||
minorTickHeight: 6,
|
||
labelOffset: 8,
|
||
primaryFontSize: 13,
|
||
secondaryFontSize: 11,
|
||
timeMarkHeight: 16,
|
||
timeMarkWidth: 1
|
||
},
|
||
showCurrentTime: true,
|
||
highlightWeekends: true,
|
||
timeMarks: []
|
||
};
|
||
|
||
if (!config) return defaultConfig;
|
||
|
||
return {
|
||
initialCenterTime: config.initialCenterTime ?? defaultConfig.initialCenterTime,
|
||
initialTimeRange: config.initialTimeRange ?? defaultConfig.initialTimeRange,
|
||
zoomMode: config.zoomMode ?? defaultConfig.zoomMode,
|
||
zoomSensitivity: config.zoomSensitivity ?? defaultConfig.zoomSensitivity,
|
||
timezoneOffset: config.timezoneOffset ?? defaultConfig.timezoneOffset,
|
||
colors: { ...defaultConfig.colors, ...config.colors },
|
||
sizes: { ...defaultConfig.sizes, ...config.sizes },
|
||
showCurrentTime: config.showCurrentTime ?? defaultConfig.showCurrentTime,
|
||
highlightWeekends: config.highlightWeekends ?? defaultConfig.highlightWeekends,
|
||
timeMarks: config.timeMarks ?? defaultConfig.timeMarks
|
||
};
|
||
}
|
||
|
||
/** 设置事件监听器 */
|
||
private setupEventListeners(): void {
|
||
// 鼠标按下
|
||
this.canvas.addEventListener('mousedown', (e) => {
|
||
if (e.button === 0) {
|
||
const rect = this.canvas.getBoundingClientRect();
|
||
const x = e.clientX - rect.left;
|
||
const y = e.clientY - rect.top;
|
||
this.interaction.startDrag(x, y);
|
||
this.canvas.style.cursor = 'grabbing';
|
||
} else if (e.button === 2) {
|
||
e.preventDefault();
|
||
}
|
||
|
||
});
|
||
|
||
// 鼠标移动
|
||
this.canvas.addEventListener('mousemove', (e) => {
|
||
if (e.button === 0) {
|
||
const rect = this.canvas.getBoundingClientRect();
|
||
const x = e.clientX - rect.left;
|
||
const y = e.clientY - rect.top;
|
||
this.interaction.handleMouseMove(x, y, this.viewport);
|
||
|
||
if (this.interaction.getIsDragging()) {
|
||
this.render();
|
||
}
|
||
}
|
||
|
||
});
|
||
|
||
// 鼠标释放
|
||
this.canvas.addEventListener('mouseup', (e) => {
|
||
if (e.button === 0) {
|
||
this.interaction.endDrag();
|
||
this.canvas.style.cursor = 'crosshair';
|
||
} else if (e.button === 2) {
|
||
e.preventDefault();
|
||
}
|
||
});
|
||
|
||
// 鼠标离开画布
|
||
this.canvas.addEventListener('mouseleave', () => {
|
||
this.interaction.endDrag();
|
||
this.canvas.style.cursor = 'crosshair';
|
||
});
|
||
|
||
this.canvas.addEventListener('mouseup', (e) => {
|
||
// 只有在点击时才添加时间标记
|
||
if (this.interaction.isClick()) {
|
||
const rect = this.canvas.getBoundingClientRect();
|
||
const x = e.clientX - rect.left;
|
||
// 获取当前刻度信息用于吸附
|
||
const ticks = this.scaleManager.calculateTicks(this.viewport);
|
||
const date = this.viewport.screenToTime(x, true, ticks);
|
||
this.interaction.setZoomMode(ZoomMode.MarkMode);
|
||
this.replaceTimeMark({
|
||
timestamp: date,
|
||
color: '#ff6b6b',
|
||
label: format(date, 'HH:mm:ss'),
|
||
type: 'custom'
|
||
});
|
||
}
|
||
});
|
||
|
||
// 滚轮事件
|
||
this.canvas.addEventListener('wheel', (e) => {
|
||
e.preventDefault();
|
||
const rect = this.canvas.getBoundingClientRect();
|
||
const mouseX = e.clientX - rect.left;
|
||
|
||
const markTimestamp = this.config.timeMarks?.find(mark => mark.type === 'custom')?.timestamp;
|
||
|
||
if (markTimestamp) {
|
||
const markX = this.viewport.timeToScreen(markTimestamp);
|
||
if (markX >= 0 && markX <= this.viewport.getWidth()) {
|
||
this.interaction.handleWheel(e.deltaY, mouseX, this.viewport, markX);
|
||
this.render();
|
||
return
|
||
}
|
||
}
|
||
|
||
this.interaction.handleWheel(e.deltaY, mouseX, this.viewport);
|
||
this.render();
|
||
});
|
||
|
||
// 处理画布大小变化
|
||
const resizeObserver = new ResizeObserver(() => {
|
||
this.handleResize();
|
||
});
|
||
resizeObserver.observe(this.canvas);
|
||
|
||
// 设置初始光标
|
||
this.canvas.style.cursor = 'crosshair';
|
||
}
|
||
|
||
/** 处理画布大小变化 */
|
||
private handleResize(): void {
|
||
const rect = this.canvas.getBoundingClientRect();
|
||
this.canvas.width = rect.width * window.devicePixelRatio;
|
||
this.canvas.height = rect.height * window.devicePixelRatio;
|
||
this.ctx.scale(window.devicePixelRatio, window.devicePixelRatio);
|
||
this.viewport.updateSize(rect.width, rect.height);
|
||
this.render();
|
||
}
|
||
|
||
/** 开始当前时间更新 */
|
||
private startCurrentTimeUpdate(): void {
|
||
this.currentTimeUpdateInterval = window.setInterval(() => {
|
||
this.render();
|
||
}, 1000); // 每秒更新一次
|
||
}
|
||
|
||
/** 渲染时间轴 */
|
||
render(): void {
|
||
const width = this.viewport.getWidth();
|
||
const height = this.viewport.getHeight();
|
||
|
||
// 清空画布
|
||
if (this.config.colors.background === 'transparent') {
|
||
// 对于透明背景，使用 clearRect 来清空画布
|
||
this.ctx.clearRect(0, 0, width, height);
|
||
} else {
|
||
// 对于有颜色的背景，使用 fillRect 来填充
|
||
this.ctx.fillStyle = this.config.colors.background ?? '#1a1a1a';
|
||
this.ctx.fillRect(0, 0, width, height);
|
||
}
|
||
|
||
// 高亮周末（如果启用）
|
||
if (this.config.highlightWeekends) {
|
||
this.drawWeekends();
|
||
}
|
||
|
||
// 计算并绘制刻度
|
||
const ticks = this.scaleManager.calculateTicks(this.viewport);
|
||
this.drawTicks(ticks);
|
||
|
||
// 绘制当前时间线（如果启用）
|
||
if (this.config.showCurrentTime) {
|
||
this.drawCurrentTime();
|
||
}
|
||
|
||
// 绘制时间标记
|
||
this.drawTimeMarks();
|
||
}
|
||
|
||
/** 绘制周末高亮 */
|
||
private drawWeekends(): void {
|
||
const [startTime, endTime] = this.viewport.getVisibleRange();
|
||
const height = this.viewport.getHeight();
|
||
|
||
// 找到第一个周六或周日
|
||
let currentTime = TimeUtils.getDayStart(startTime);
|
||
|
||
while (currentTime <= endTime) {
|
||
const date = new Date(currentTime);
|
||
if (TimeUtils.isWeekend(currentTime)) {
|
||
const dayStart = currentTime;
|
||
const dayEnd = dayStart + 24 * 60 * 60 * 1000;
|
||
|
||
const x1 = this.viewport.timeToScreen(dayStart);
|
||
const x2 = this.viewport.timeToScreen(dayEnd);
|
||
|
||
if (x2 > 0 && x1 < this.viewport.getWidth()) {
|
||
this.ctx.fillStyle = this.config.colors.weekend ?? 'rgba(100, 100, 255, 0.05)';
|
||
this.ctx.fillRect(
|
||
Math.max(0, x1),
|
||
0,
|
||
Math.min(x2, this.viewport.getWidth()) - Math.max(0, x1),
|
||
height
|
||
);
|
||
}
|
||
}
|
||
currentTime += 24 * 60 * 60 * 1000; // 下一天
|
||
}
|
||
}
|
||
|
||
/** 绘制刻度 */
|
||
private drawTicks(ticks: Tick[]): void {
|
||
const height = this.viewport.getHeight();
|
||
|
||
// 先绘制网格线
|
||
ticks.filter(t => t.isMajor).forEach(tick => {
|
||
this.ctx.strokeStyle = this.config.colors.grid ?? '#2a2a2a';
|
||
this.ctx.lineWidth = 0.5;
|
||
this.ctx.beginPath();
|
||
this.ctx.moveTo(tick.position, 0);
|
||
this.ctx.lineTo(tick.position, height);
|
||
this.ctx.stroke();
|
||
});
|
||
|
||
// 绘制刻度线和标签
|
||
ticks.forEach(tick => {
|
||
const x = tick.position;
|
||
|
||
// 绘制刻度线
|
||
const tickHeight = tick.isMajor ?
|
||
(this.config.sizes.majorTickHeight ?? 12) :
|
||
(this.config.sizes.minorTickHeight ?? 6);
|
||
|
||
this.ctx.strokeStyle = tick.isMajor ?
|
||
(this.config.colors.majorTick ?? '#d0d0d0') :
|
||
(this.config.colors.minorTick ?? '#606060');
|
||
this.ctx.lineWidth = tick.isMajor ? 1.5 : 1;
|
||
this.ctx.beginPath();
|
||
this.ctx.moveTo(x, height - tickHeight);
|
||
this.ctx.lineTo(x, height);
|
||
this.ctx.stroke();
|
||
|
||
// 绘制标签（仅主刻度）
|
||
if (tick.primaryLabel) {
|
||
// 主标签
|
||
this.ctx.fillStyle = this.config.colors.primaryLabel ?? '#e0e0e0';
|
||
this.ctx.font = `${this.config.sizes.primaryFontSize ?? 13}px -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif`;
|
||
this.ctx.textAlign = 'center';
|
||
this.ctx.textBaseline = 'bottom';
|
||
this.ctx.fillText(
|
||
tick.primaryLabel,
|
||
x,
|
||
height - tickHeight - (this.config.sizes.labelOffset ?? 8)
|
||
);
|
||
|
||
// 次标签（如日期）
|
||
if (tick.secondaryLabel) {
|
||
this.ctx.fillStyle = this.config.colors.secondaryLabel ?? '#a0a0a0';
|
||
this.ctx.font = `${this.config.sizes.secondaryFontSize ?? 11}px -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif`;
|
||
this.ctx.fillText(
|
||
tick.secondaryLabel,
|
||
x,
|
||
height - tickHeight - (this.config.sizes.labelOffset ?? 8) - 12
|
||
);
|
||
}
|
||
}
|
||
});
|
||
}
|
||
|
||
/** 绘制当前时间线 */
|
||
private drawCurrentTime(): void {
|
||
const now = Date.now();
|
||
const x = this.viewport.timeToScreen(now);
|
||
|
||
if (x >= 0 && x <= this.viewport.getWidth()) {
|
||
const height = this.viewport.getHeight();
|
||
|
||
// 绘制时间线
|
||
this.ctx.strokeStyle = this.config.colors.currentTime ?? '#ff4444';
|
||
this.ctx.lineWidth = 1;
|
||
this.ctx.setLineDash([5, 5]);
|
||
this.ctx.beginPath();
|
||
this.ctx.moveTo(x, 0);
|
||
this.ctx.lineTo(x, height);
|
||
this.ctx.stroke();
|
||
this.ctx.setLineDash([]);
|
||
|
||
// 绘制时间标签背景
|
||
const timeStr = TimeUtils.format(new Date(now), 'HH:mm:ss');
|
||
this.ctx.font = `bold ${this.config.sizes.primaryFontSize ?? 13}px -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif`;
|
||
const metrics = this.ctx.measureText(timeStr);
|
||
const labelWidth = metrics.width + 10;
|
||
const labelHeight = 20;
|
||
|
||
this.ctx.fillStyle = this.config.colors.currentTime ?? '#ff4444';
|
||
// this.ctx.fillRect(x - labelWidth / 2, 0, labelWidth, labelHeight);
|
||
|
||
// 绘制时间文本
|
||
this.ctx.fillStyle = '#ffffff';
|
||
this.ctx.textAlign = 'center';
|
||
this.ctx.textBaseline = 'middle';
|
||
// this.ctx.fillText(timeStr, x, labelHeight / 2);
|
||
}
|
||
}
|
||
|
||
/** 绘制时间标记 */
|
||
private drawTimeMarks(): void {
|
||
if (!this.config.timeMarks || this.config.timeMarks.length === 0) {
|
||
return;
|
||
}
|
||
|
||
const height = this.viewport.getHeight();
|
||
const markHeight = this.config.sizes.timeMarkHeight ?? 16;
|
||
const markWidth = this.config.sizes.timeMarkWidth ?? 4;
|
||
|
||
this.config.timeMarks.forEach(mark => {
|
||
const x = this.viewport.timeToScreen(mark.timestamp);
|
||
|
||
// 只绘制可见范围内的标记
|
||
if (x >= -markWidth && x <= this.viewport.getWidth() + markWidth) {
|
||
// 绘制标记线
|
||
this.ctx.strokeStyle = mark.color || (this.config.colors.timeMark ?? '#ff6b6b');
|
||
this.ctx.lineWidth = markWidth;
|
||
this.ctx.beginPath();
|
||
this.ctx.moveTo(x, 0);
|
||
this.ctx.lineTo(x, height);
|
||
this.ctx.stroke();
|
||
|
||
// 绘制标记标签（如果有）
|
||
if (mark.label) {
|
||
const labelHeight = 16;
|
||
const labelWidth = 50;
|
||
const labelY = Math.max(5, height - labelHeight - 5);
|
||
|
||
// 绘制标签背景
|
||
this.ctx.fillStyle = mark.color || (this.config.colors.timeMark ?? '#ff6b6b');
|
||
// this.ctx.fillRect(x - 25, labelY, 50, labelHeight);
|
||
this.ctx.fillRect(x - labelWidth / 2, 0, labelWidth, labelHeight)
|
||
|
||
// 绘制标签文本
|
||
this.ctx.fillStyle = this.config.colors.timeMarkLabel ?? '#ffffff';
|
||
this.ctx.font = `${this.config.sizes.secondaryFontSize ?? 11}px -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif`;
|
||
this.ctx.textAlign = 'center';
|
||
this.ctx.textBaseline = 'middle';
|
||
// this.ctx.fillText(mark.label, x, labelY + labelHeight / 2);
|
||
this.ctx.fillText(mark.label, x, labelHeight / 2);
|
||
}
|
||
}
|
||
});
|
||
}
|
||
|
||
|
||
|
||
/** 获取当前视口信息 */
|
||
getViewportInfo(): {
|
||
centerTime: number;
|
||
timeRange: number;
|
||
visibleRange: [number, number];
|
||
currentLevel: TimeFormatLevel | null;
|
||
} {
|
||
const currentLevel = this.scaleManager.getCurrentLevel();
|
||
return {
|
||
centerTime: this.viewport.getCenterTime(),
|
||
timeRange: this.viewport.getTimeRange(),
|
||
visibleRange: this.viewport.getVisibleRange(),
|
||
currentLevel: currentLevel?.level || null
|
||
};
|
||
}
|
||
|
||
/** 跳转到指定时间 */
|
||
goToTime(timestamp: number): void {
|
||
this.viewport.goToTime(timestamp);
|
||
this.render();
|
||
}
|
||
|
||
/** 跳转到当前时间 */
|
||
goToNow(): void {
|
||
this.goToTime(Date.now());
|
||
}
|
||
|
||
/** 设置时间范围 */
|
||
setTimeRange(range: number): void {
|
||
this.viewport.setTimeRange(range);
|
||
this.render();
|
||
}
|
||
|
||
/** 设置缩放模式 */
|
||
setZoomMode(mode: ZoomMode): void {
|
||
this.interaction.setZoomMode(mode);
|
||
}
|
||
|
||
/** 添加时间标记 */
|
||
addTimeMark(mark: TimeMark): void {
|
||
this.config.timeMarks.push(mark);
|
||
this.render();
|
||
}
|
||
|
||
replaceTimeMark(mark: TimeMark): void {
|
||
this.config.timeMarks.splice(0);
|
||
this.config.timeMarks.push(mark);
|
||
this.render();
|
||
}
|
||
|
||
forwardTimeMark(delta: number, timestamp?: number): void {
|
||
if (!timestamp) {
|
||
timestamp = this.config.timeMarks[0].timestamp;
|
||
}
|
||
const index = this.config.timeMarks.findIndex(mark => mark.timestamp === timestamp);
|
||
if (index !== -1) {
|
||
this.config.timeMarks.splice(index, 1);
|
||
this.replaceTimeMark({
|
||
timestamp: timestamp + delta,
|
||
color: '#ff6b6b',
|
||
label: format(timestamp + delta, 'HH:mm:ss'),
|
||
type: 'custom'
|
||
});
|
||
this.render();
|
||
}
|
||
}
|
||
|
||
backwardTimeMark(delta: number, timestamp?: number): void {
|
||
if (!timestamp) {
|
||
timestamp = this.config.timeMarks[0].timestamp;
|
||
}
|
||
const index = this.config.timeMarks.findIndex(mark => mark.timestamp === timestamp);
|
||
if (index !== -1) {
|
||
this.config.timeMarks.splice(index, 1);
|
||
this.replaceTimeMark({
|
||
timestamp: timestamp - delta,
|
||
color: '#ff6b6b',
|
||
label: format(timestamp - delta, 'HH:mm:ss'),
|
||
type: 'custom'
|
||
});
|
||
this.render();
|
||
}
|
||
}
|
||
|
||
/** 确保 Mark 处于当前视野内 */
|
||
ensureMarkInView(timestamp?: number): void {
|
||
if (!timestamp) {
|
||
const mark = this.config.timeMarks.find(mark => mark.type === 'custom');
|
||
if (!mark) return;
|
||
timestamp = mark.timestamp;
|
||
}
|
||
|
||
const [startTime, endTime] = this.viewport.getVisibleRange();
|
||
const markX = this.viewport.timeToScreen(timestamp);
|
||
|
||
// 如果 Mark 不在视野内，调整视口
|
||
if (markX < 0 || markX > this.viewport.getWidth()) {
|
||
// 计算 Mark 应该位于视口左侧 1/3 位置（符合人体工学）
|
||
const leftOffset = this.viewport.getWidth() / 3;
|
||
const timeOffset = (leftOffset / this.viewport.getWidth()) * this.viewport.getTimeRange();
|
||
const targetCenterTime = timestamp + timeOffset;
|
||
this.viewport.goToTime(targetCenterTime);
|
||
this.render();
|
||
}
|
||
}
|
||
|
||
/** 播放翻页后确保 Mark 在视野内 */
|
||
playAndEnsureMarkInView(delta: number, timestamp?: number): void {
|
||
// 先执行时间标记的前进
|
||
this.forwardTimeMark(delta, timestamp);
|
||
|
||
// 然后确保 Mark 在视野内
|
||
this.ensureMarkInView();
|
||
}
|
||
|
||
/** 后退翻页后确保 Mark 在视野内 */
|
||
playBackwardAndEnsureMarkInView(delta: number, timestamp?: number): void {
|
||
// 先执行时间标记的后退
|
||
this.backwardTimeMark(delta, timestamp);
|
||
|
||
// 然后确保 Mark 在视野内
|
||
this.ensureMarkInView();
|
||
}
|
||
|
||
/** 移除时间标记 */
|
||
removeTimeMark(timestamp: number): void {
|
||
const index = this.config.timeMarks.findIndex(mark => mark.timestamp === timestamp);
|
||
if (index !== -1) {
|
||
this.config.timeMarks.splice(index, 1);
|
||
this.render();
|
||
}
|
||
}
|
||
|
||
/** 清除所有时间标记 */
|
||
clearTimeMarks(): void {
|
||
this.config.timeMarks = [];
|
||
this.render();
|
||
}
|
||
|
||
/** 获取所有时间标记 */
|
||
getTimeMarks(): TimeMark[] {
|
||
return [...this.config.timeMarks];
|
||
}
|
||
|
||
/** 快速设置显示范围的辅助方法 */
|
||
showLastMinutes(minutes: number): void {
|
||
this.setTimeRange(minutes * 60 * 1000);
|
||
this.goToNow();
|
||
}
|
||
|
||
showLastHours(hours: number): void {
|
||
this.setTimeRange(hours * 60 * 60 * 1000);
|
||
this.goToNow();
|
||
}
|
||
|
||
showLastDays(days: number): void {
|
||
this.setTimeRange(days * 24 * 60 * 60 * 1000);
|
||
this.goToNow();
|
||
}
|
||
|
||
showToday(): void {
|
||
const now = new Date();
|
||
const dayStart = TimeUtils.getDayStart(now.getTime());
|
||
const dayEnd = dayStart + 24 * 60 * 60 * 1000;
|
||
|
||
this.viewport.goToTime((dayStart + dayEnd) / 2);
|
||
this.setTimeRange(24 * 60 * 60 * 1000);
|
||
}
|
||
|
||
showThisWeek(): void {
|
||
const now = new Date();
|
||
const day = now.getDay();
|
||
const weekStart = TimeUtils.getDayStart(now.getTime() - day * 24 * 60 * 60 * 1000);
|
||
const weekEnd = weekStart + 7 * 24 * 60 * 60 * 1000;
|
||
|
||
this.viewport.goToTime((weekStart + weekEnd) / 2);
|
||
this.setTimeRange(7 * 24 * 60 * 60 * 1000);
|
||
}
|
||
|
||
showThisMonth(): void {
|
||
const now = new Date();
|
||
const monthStart = new Date(now.getFullYear(), now.getMonth(), 1).getTime();
|
||
const monthEnd = new Date(now.getFullYear(), now.getMonth() + 1, 0).getTime();
|
||
|
||
this.viewport.goToTime((monthStart + monthEnd) / 2);
|
||
this.setTimeRange(monthEnd - monthStart);
|
||
}
|
||
|
||
/** 导出当前视图为图片 */
|
||
exportAsImage(filename: string = 'timeline.png'): void {
|
||
this.canvas.toBlob((blob) => {
|
||
if (blob) {
|
||
const url = URL.createObjectURL(blob);
|
||
const a = document.createElement('a');
|
||
a.href = url;
|
||
a.download = filename;
|
||
a.click();
|
||
URL.revokeObjectURL(url);
|
||
}
|
||
});
|
||
}
|
||
|
||
/** 销毁时间轴 */
|
||
destroy(): void {
|
||
if (this.animationFrameId) {
|
||
cancelAnimationFrame(this.animationFrameId);
|
||
}
|
||
if (this.currentTimeUpdateInterval) {
|
||
clearInterval(this.currentTimeUpdateInterval);
|
||
}
|
||
}
|
||
}
|
||
|
||
// 导出
|
||
export {
|
||
RealTimeTimeline as Timeline,
|
||
ZoomMode,
|
||
TimeFormatLevel,
|
||
TimeUtils
|
||
};
|
||
export type { TimelineConfig, Tick, ScaleLevel, TimeMark }; |