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ce1356559d
* test: test driven * fix: format logic * chore: comment * chore: rm useless lint rule * chore: rm useless lint rule * chore: rm useless lint rule * chore: rm useless lint rule
79 lines
2.1 KiB
TypeScript
79 lines
2.1 KiB
TypeScript
import type { ColorGenInput } from '@rc-component/color-picker';
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import { Color as RcColor } from '@rc-component/color-picker';
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import { AggregationColor } from './color';
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import type { ColorValueType } from './interface';
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export const generateColor = (
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color: ColorGenInput<AggregationColor> | Exclude<ColorValueType, null>,
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): AggregationColor => {
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if (color instanceof AggregationColor) {
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return color;
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}
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return new AggregationColor(color);
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};
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export const getRoundNumber = (value: number) => Math.round(Number(value || 0));
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export const getColorAlpha = (color: AggregationColor) => getRoundNumber(color.toHsb().a * 100);
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/** Return the color whose `alpha` is 1 */
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export const genAlphaColor = (color: AggregationColor, alpha?: number) => {
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const rgba = color.toRgb();
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// Color from hsb input may get `rgb` is (0/0/0) when `hsb.b` is 0
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// So if rgb is empty, we should get from hsb
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if (!rgba.r && !rgba.g && !rgba.b) {
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const hsba = color.toHsb();
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hsba.a = alpha || 1;
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return generateColor(hsba);
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}
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rgba.a = alpha || 1;
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return generateColor(rgba);
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};
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/**
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* Get percent position color. e.g. [10%-#fff, 20%-#000], 15% => #888
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*/
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export const getGradientPercentColor = (
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colors: { percent: number; color: string }[],
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percent: number,
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): string => {
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const filledColors = [
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{
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percent: 0,
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color: colors[0].color,
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},
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...colors,
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{
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percent: 100,
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color: colors[colors.length - 1].color,
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},
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];
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for (let i = 0; i < filledColors.length - 1; i += 1) {
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const startPtg = filledColors[i].percent;
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const endPtg = filledColors[i + 1].percent;
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const startColor = filledColors[i].color;
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const endColor = filledColors[i + 1].color;
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if (startPtg <= percent && percent <= endPtg) {
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const dist = endPtg - startPtg;
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if (dist === 0) {
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return startColor;
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}
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const ratio = ((percent - startPtg) / dist) * 100;
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const startRcColor = new RcColor(startColor);
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const endRcColor = new RcColor(endColor);
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return startRcColor.mix(endRcColor, ratio).toRgbString();
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}
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}
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// This will never reach
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/* istanbul ignore next */
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return '';
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};
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