75 строки
1.7 KiB
JavaScript
75 строки
1.7 KiB
JavaScript
/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @flow
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* @format
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*/
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'use strict';
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const AnimatedInterpolation = require('./AnimatedInterpolation');
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const AnimatedNode = require('./AnimatedNode');
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const AnimatedWithChildren = require('./AnimatedWithChildren');
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import type {InterpolationConfigType} from './AnimatedInterpolation';
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import type {PlatformConfig} from '../AnimatedPlatformConfig';
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class AnimatedDiffClamp extends AnimatedWithChildren {
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_a: AnimatedNode;
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_min: number;
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_max: number;
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_value: number;
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_lastValue: number;
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constructor(a: AnimatedNode, min: number, max: number) {
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super();
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this._a = a;
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this._min = min;
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this._max = max;
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this._value = this._lastValue = this._a.__getValue();
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}
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__makeNative(platformConfig: ?PlatformConfig) {
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this._a.__makeNative(platformConfig);
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super.__makeNative(platformConfig);
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}
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interpolate<OutputT: number | string>(
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config: InterpolationConfigType<OutputT>,
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): AnimatedInterpolation<OutputT> {
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return new AnimatedInterpolation(this, config);
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}
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__getValue(): number {
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const value = this._a.__getValue();
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const diff = value - this._lastValue;
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this._lastValue = value;
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this._value = Math.min(Math.max(this._value + diff, this._min), this._max);
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return this._value;
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}
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__attach(): void {
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this._a.__addChild(this);
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}
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__detach(): void {
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this._a.__removeChild(this);
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super.__detach();
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}
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__getNativeConfig(): any {
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return {
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type: 'diffclamp',
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input: this._a.__getNativeTag(),
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min: this._min,
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max: this._max,
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};
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}
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}
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module.exports = AnimatedDiffClamp;
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