@nativescript/core/ui/styling/converters.js

A JavaScript library providing an easy to use api for interacting with iOS and Android platform APIs.

import { CoreTypes } from '../../core-types';
const STYLE_CURVE_MAP = Object.freeze({
    ease: CoreTypes.AnimationCurve.ease,
    linear: CoreTypes.AnimationCurve.linear,
    'ease-in': CoreTypes.AnimationCurve.easeIn,
    'ease-out': CoreTypes.AnimationCurve.easeOut,
    'ease-in-out': CoreTypes.AnimationCurve.easeInOut,
    spring: CoreTypes.AnimationCurve.spring,
});
export function timeConverter(value) {
    let result = parseFloat(value);
    if (value.indexOf('ms') === -1) {
        result = result * 1000;
    }
    return Math.max(0.0, result);
}
export function animationTimingFunctionConverter(value) {
    return value ? STYLE_CURVE_MAP[value] || parseCubicBezierCurve(value) : CoreTypes.AnimationCurve.ease;
}
function parseCubicBezierCurve(value) {
    const coordsString = /\((.*?)\)/.exec(value);
    const coords = coordsString && coordsString[1].split(',').map(stringToBezieCoords);
    if (value.startsWith('cubic-bezier') && coordsString && coords.length === 4) {
        const [x1, x2, y1, y2] = [...coords];
        return CoreTypes.AnimationCurve.cubicBezier(x1, x2, y1, y2);
    }
    else {
        throw new Error(`Invalid value for animation: ${value}`);
    }
}
function stringToBezieCoords(value) {
    const result = parseFloat(value);
    if (result < 0) {
        return 0;
    }
    else if (result > 1) {
        return 1;
    }
    return result;
}
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