53 lines
2.1 KiB
JavaScript
53 lines
2.1 KiB
JavaScript
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import { useTransform } from './use-transform.mjs';
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import { invariant, warning } from '../utils/errors.mjs';
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import { useMotionValue } from './use-motion-value.mjs';
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import { MotionContext } from '../context/MotionContext/index.mjs';
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import { useContext } from 'react';
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// Keep things reasonable and avoid scale: Infinity. In practise we might need
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// to add another value, opacity, that could interpolate scaleX/Y [0,0.01] => [0,1]
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// to simply hide content at unreasonable scales.
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const maxScale = 100000;
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const invertScale = (scale) => scale > 0.001 ? 1 / scale : maxScale;
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let hasWarned = false;
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/**
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* Returns a `MotionValue` each for `scaleX` and `scaleY` that update with the inverse
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* of their respective parent scales.
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*
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* This is useful for undoing the distortion of content when scaling a parent component.
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*
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* By default, `useInvertedScale` will automatically fetch `scaleX` and `scaleY` from the nearest parent.
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* By passing other `MotionValue`s in as `useInvertedScale({ scaleX, scaleY })`, it will invert the output
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* of those instead.
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*
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* ```jsx
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* const MyComponent = () => {
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* const { scaleX, scaleY } = useInvertedScale()
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* return <motion.div style={{ scaleX, scaleY }} />
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* }
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* ```
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*
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* @deprecated
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*/
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function useInvertedScale(scale) {
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let parentScaleX = useMotionValue(1);
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let parentScaleY = useMotionValue(1);
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const { visualElement } = useContext(MotionContext);
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invariant(!!(scale || visualElement), "If no scale values are provided, useInvertedScale must be used within a child of another motion component.");
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warning(hasWarned, "useInvertedScale is deprecated and will be removed in 3.0. Use the layout prop instead.");
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hasWarned = true;
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if (scale) {
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parentScaleX = scale.scaleX || parentScaleX;
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parentScaleY = scale.scaleY || parentScaleY;
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}
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else if (visualElement) {
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parentScaleX = visualElement.getValue("scaleX", 1);
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parentScaleY = visualElement.getValue("scaleY", 1);
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}
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const scaleX = useTransform(parentScaleX, invertScale);
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const scaleY = useTransform(parentScaleY, invertScale);
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return { scaleX, scaleY };
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}
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export { invertScale, useInvertedScale };
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