@antv/scale/esm/scales/time.js

Toolkit for mapping abstract data into visual representation.

import { identity } from '@antv/util';
import { format } from 'fecha';
import { Continuous } from './continuous';
import { d3Time } from '../tick-methods/d3-time';
import { d3TimeNice, createInterpolateNumber, localIntervalMap, utcIntervalMap, chooseNiceTimeMask } from '../utils';
function offset(date) {
    const minuteOffset = date.getTimezoneOffset();
    const d = new Date(date);
    d.setMinutes(d.getMinutes() + minuteOffset, d.getSeconds(), d.getMilliseconds());
    return d;
}
export class Time extends Continuous {
    getDefaultOptions() {
        return {
            domain: [new Date(2000, 0, 1), new Date(2000, 0, 2)],
            range: [0, 1],
            nice: false,
            tickCount: 5,
            tickInterval: undefined,
            unknown: undefined,
            clamp: false,
            tickMethod: d3Time,
            interpolate: createInterpolateNumber,
            mask: undefined,
            utc: false,
        };
    }
    chooseTransforms() {
        const transform = (x) => +x;
        const untransform = (x) => new Date(x);
        return [transform, untransform];
    }
    chooseNice() {
        return d3TimeNice;
    }
    getTickMethodOptions() {
        const { domain, tickCount, tickInterval, utc } = this.options;
        const min = domain[0];
        const max = domain[domain.length - 1];
        return [min, max, tickCount, tickInterval, utc];
    }
    getFormatter() {
        const { mask, utc } = this.options;
        const maskMap = utc ? utcIntervalMap : localIntervalMap;
        const time = utc ? offset : identity; // fecha 不支持 utc 格式化，所以需要设置一个偏移
        return (d) => format(time(d), mask || chooseNiceTimeMask(d, maskMap));
    }
    clone() {
        return new Time(this.options);
    }
}
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