scichart
Version:
Fast WebGL JavaScript Charting Library and Framework
151 lines (150 loc) • 6.37 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 __());
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.DateTimeDeltaCalculator = void 0;
var performanceWarnings_1 = require("../../../../constants/performanceWarnings");
var NumberRange_1 = require("../../../../Core/NumberRange");
var NumericDeltaCalculator_1 = require("./NumericDeltaCalculator");
/**
* The DateTimeDeltaCalculator is respinsible for calculating {@link AxisCore.minorDelta} and {@link AxisCore.majorDelta} on
* {@link NumericAxis} types.
*/
var DateTimeDeltaCalculator = /** @class */ (function (_super) {
__extends(DateTimeDeltaCalculator, _super);
function DateTimeDeltaCalculator(webAssemblyContext, options) {
var _this = this;
var _a;
_this = _super.call(this, webAssemblyContext) || this;
_this.possibleDeltasProperty = [
1,
2,
5,
10,
15,
30,
60,
2 * 60,
5 * 60,
10 * 60,
15 * 60,
30 * 60,
60 * 60,
2 * 60 * 60,
3 * 60 * 60,
6 * 60 * 60,
12 * 60 * 60,
24 * 60 * 60,
2 * 24 * 60 * 60,
3 * 24 * 60 * 60,
5 * 24 * 60 * 60,
10 * 24 * 60 * 60,
15 * 24 * 60 * 60,
20 * 24 * 60 * 60,
30 * 24 * 60 * 60,
// TODO these month deltas really need special handling
2 * 30 * 24 * 60 * 60,
4 * 30 * 24 * 60 * 60,
6 * 30 * 24 * 60 * 60,
365.25 * 24 * 60 * 60
// Years also need special handling
];
_this.currIndex = 1;
_this.possibleDeltasProperty = (_a = options === null || options === void 0 ? void 0 : options.possibleDeltas) !== null && _a !== void 0 ? _a : _this.possibleDeltasProperty;
_this.minTicks = options === null || options === void 0 ? void 0 : options.minTicks;
_this.currIndex = Math.floor(_this.possibleDeltas.length / 2);
return _this;
}
Object.defineProperty(DateTimeDeltaCalculator.prototype, "possibleDeltas", {
/**
* Gets or sets deltas array
*/
get: function () {
return this.possibleDeltasProperty;
},
set: function (value) {
if (this.possibleDeltasProperty !== value) {
this.possibleDeltasProperty = value;
this.currIndex = Math.floor(this.possibleDeltas.length / 2);
}
},
enumerable: false,
configurable: true
});
Object.defineProperty(DateTimeDeltaCalculator.prototype, "minTicks", {
get: function () {
return this.minTicksProperty;
},
set: function (value) {
if (this.minTicksProperty !== value) {
this.minTicksProperty = value;
}
},
enumerable: false,
configurable: true
});
/**
* @inheritDoc
*/
DateTimeDeltaCalculator.prototype.getDeltaFromRange = function (min, max, minorsPerMajor, maxTicks) {
var _this = this;
var diff = max - min;
this.prevIndex = undefined;
if (this.currIndex >= this.possibleDeltas.length) {
this.currIndex = Math.floor(this.possibleDeltas.length / 2);
}
var tries = 0;
var calculateDelta = function (index) {
var _a, _b;
var delta = _this.possibleDeltasProperty[index];
tries++;
if (tries > _this.possibleDeltas.length + 1) {
performanceWarnings_1.performanceWarnings.dateTimeDeltaCalculatorBadDelta.warn();
return delta;
}
var ticksCount = Math.floor(diff / delta);
if (ticksCount < ((_a = _this.minTicks) !== null && _a !== void 0 ? _a : maxTicks / 3) && index === 0 && index !== _this.prevIndex) {
if (!_this.prevIndex)
_this.prevIndex = index;
return _super.prototype.getDeltaFromRange.call(_this, min, max, minorsPerMajor, maxTicks).max;
}
if (ticksCount < ((_b = _this.minTicks) !== null && _b !== void 0 ? _b : maxTicks / 3) && index > 0 && index !== _this.prevIndex) {
if (!_this.prevIndex)
_this.prevIndex = index;
return calculateDelta(index - 1);
}
if (ticksCount > maxTicks && index < _this.possibleDeltasProperty.length - 1 && index !== _this.prevIndex) {
if (!_this.prevIndex)
_this.prevIndex = index;
return calculateDelta(index + 1);
}
else if (ticksCount > maxTicks && index === _this.possibleDeltasProperty.length - 1) {
var yearDelta = _super.prototype.getDeltaFromRange.call(_this, min / delta, max / delta, minorsPerMajor, maxTicks);
return yearDelta.max * delta;
}
else {
if (_this.currIndex !== index) {
_this.currIndex = index;
}
return delta;
}
};
var delta = calculateDelta(this.currIndex);
return new NumberRange_1.NumberRange(delta / minorsPerMajor, delta);
};
return DateTimeDeltaCalculator;
}(NumericDeltaCalculator_1.NumericDeltaCalculator));
exports.DateTimeDeltaCalculator = DateTimeDeltaCalculator;