155 lines
3.3 KiB
JavaScript
155 lines
3.3 KiB
JavaScript
function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; subClass.__proto__ = superClass; }
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/**
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* @fileOverview The measurement of linear data scale function
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* @author dxq613@gmail.com
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*/
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var fecha = require('fecha');
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var each = require('@antv/util/lib/each');
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var isNil = require('@antv/util/lib/type/is-nil');
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var isString = require('@antv/util/lib/type/is-string');
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var Base = require('./base');
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var Linear = require('./linear');
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var timeAuto = require('./auto/time');
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var TimeUtil = require('./time-util');
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/**
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* 时间度量的构造函数
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* @class Scale.Time
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*/
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var Time = /*#__PURE__*/function (_Linear) {
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_inheritsLoose(Time, _Linear);
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function Time() {
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return _Linear.apply(this, arguments) || this;
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}
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var _proto = Time.prototype;
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_proto._initDefaultCfg = function _initDefaultCfg() {
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_Linear.prototype._initDefaultCfg.call(this);
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this.type = 'time';
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this.mask = 'YYYY-MM-DD';
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}
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/**
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* @override
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*/
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;
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_proto.init = function init() {
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var self = this;
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var values = self.values;
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if (values && values.length) {
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// 重新计算最大最小值
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var timeStamps = [];
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var min = Infinity; // 最小值
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var secondMin = min; // 次小值
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var max = 0; // 使用一个循环，计算min,max,secondMin
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each(values, function (v) {
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var timeStamp = self._toTimeStamp(v);
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if (isNaN(timeStamp)) {
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throw new TypeError("Invalid Time: " + v);
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}
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if (min > timeStamp) {
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secondMin = min;
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min = timeStamp;
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} else if (secondMin > timeStamp) {
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secondMin = timeStamp;
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}
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if (max < timeStamp) {
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max = timeStamp;
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}
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timeStamps.push(timeStamp);
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}); // 存在多个值时，设置最小间距
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if (values.length > 1) {
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self.minTickInterval = secondMin - min;
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}
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if (isNil(self.min) || self._toTimeStamp(self.min) > min) {
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self.min = min;
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}
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if (isNil(self.max) || self._toTimeStamp(self.max) < max) {
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self.max = max;
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}
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}
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_Linear.prototype.init.call(this);
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};
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_proto.calculateTicks = function calculateTicks() {
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var self = this;
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var min = self.min;
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var max = self.max;
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var count = self.tickCount;
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var interval = self.tickInterval;
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var tmp = timeAuto({
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min: min,
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max: max,
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minCount: count,
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maxCount: count,
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interval: interval,
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minInterval: self.minTickInterval
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});
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return tmp.ticks;
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}
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/**
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* @override
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*/
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;
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_proto.getText = function getText(value) {
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var formatter = this.formatter;
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value = this.translate(value);
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value = formatter ? formatter(value) : fecha.format(value, this.mask);
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return value;
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}
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/**
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* @override
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*/
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;
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_proto.scale = function scale(value) {
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if (isString(value)) {
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value = this.translate(value);
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}
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return _Linear.prototype.scale.call(this, value);
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}
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/**
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* @override
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*/
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;
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_proto.translate = function translate(value) {
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return this._toTimeStamp(value);
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} // 将时间转换为时间戳
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;
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_proto._toTimeStamp = function _toTimeStamp(value) {
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return TimeUtil.toTimeStamp(value);
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};
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return Time;
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}(Linear);
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Base.Time = Time;
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module.exports = Time; |