@taiga-ui/kit/esm2022/components/slider/helpers/key-steps.mjs

Taiga UI Angular main components kit

import { tuiRound } from '@taiga-ui/cdk/utils/math';
/**
 * Used as a limit for eliminating JS issues with floating point math
 */
export const TUI_FLOATING_PRECISION = 7;
function tuiFindKeyStepsBoundariesByFn(keySteps, fn) {
    const keyStepUpperIndex = keySteps.findIndex((keyStep, i) => i && fn(keyStep));
    const lowerStep = keySteps[keyStepUpperIndex - 1] || keySteps[0];
    const upperStep = keySteps[keyStepUpperIndex] ||
        keySteps[keySteps.length - 1] || [0, 0];
    return [lowerStep, upperStep];
}
export function tuiPercentageToKeyStepValue(valuePercentage, keySteps) {
    const [[lowerStepPercent, lowerStepValue], [upperStepPercent, upperStepValue]] = tuiFindKeyStepsBoundariesByFn(keySteps, ([keyStepPercentage, _]) => valuePercentage <= keyStepPercentage);
    const ratio = (valuePercentage - lowerStepPercent) / (upperStepPercent - lowerStepPercent);
    const controlValue = (upperStepValue - lowerStepValue) * ratio + lowerStepValue;
    return tuiRound(controlValue, TUI_FLOATING_PRECISION);
}
export function tuiKeyStepValueToPercentage(value, keySteps) {
    const [[lowerStepPercent, lowerStepValue], [upperStepPercent, upperStepValue]] = tuiFindKeyStepsBoundariesByFn(keySteps, ([_, keyStepValue]) => value <= keyStepValue);
    const ratio = (value - lowerStepValue) / (upperStepValue - lowerStepValue) || 0;
    return (upperStepPercent - lowerStepPercent) * ratio + lowerStepPercent;
}
export function tuiCreateKeyStepsTransformer(keySteps, slider) {
    return new (class {
        fromControlValue(controlValue) {
            const newValuePercentage = tuiKeyStepValueToPercentage(controlValue, keySteps);
            return (newValuePercentage * (slider.max - slider.min)) / 100 + slider.min;
        }
        toControlValue(nativeValue) {
            const valueRatio = (nativeValue - slider.min) / (slider.max - slider.min) || 0;
            return tuiPercentageToKeyStepValue(valueRatio * 100, keySteps);
        }
    })();
}
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