recharts
Version:
React charts
72 lines (69 loc) • 2.25 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.rechartsScaleFactory = rechartsScaleFactory;
/**
* This is internal representation of scale used in Recharts.
* Users will provide CustomScaleDefinition or a string, which we will parse into RechartsScale.
* Most importantly, RechartsScale is fully immutable - there are no setters that mutate the scale in place.
* This is important for React integration - if the scale changes, we want to trigger re-renders.
* Mutating the scale in place would not trigger re-renders, leading to stale UI.
*/
/**
* Position within a band for banded scales.
* In scales that are not banded, this parameter is ignored.
*
* @inline
*/
function rechartsScaleFactory(d3Scale) {
if (d3Scale == null) {
return undefined;
}
var ticksFn = d3Scale.ticks;
var bandwidthFn = d3Scale.bandwidth;
var d3Range = d3Scale.range();
var range = [Math.min(...d3Range), Math.max(...d3Range)];
return {
domain: () => d3Scale.domain(),
range: function (_range) {
function range() {
return _range.apply(this, arguments);
}
range.toString = function () {
return _range.toString();
};
return range;
}(() => range),
rangeMin: () => range[0],
rangeMax: () => range[1],
isInRange(value) {
var first = range[0];
var last = range[1];
return first <= last ? value >= first && value <= last : value >= last && value <= first;
},
bandwidth: bandwidthFn ? () => bandwidthFn.call(d3Scale) : undefined,
ticks: ticksFn ? count => ticksFn.call(d3Scale, count) : undefined,
map: (input, options) => {
var baseValue = d3Scale(input);
if (baseValue == null) {
return undefined;
}
if (d3Scale.bandwidth && options !== null && options !== void 0 && options.position) {
var bandWidth = d3Scale.bandwidth();
switch (options.position) {
case 'middle':
baseValue += bandWidth / 2;
break;
case 'end':
baseValue += bandWidth;
break;
default:
// 'start' requires no adjustment
break;
}
}
return baseValue;
}
};
}