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https://github.com/facebook/react-native.git
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Luna Wei
1c895678cf
Summary: Changelog: [Internal][Changed] - Separate `pickScale` implementation from AssetSourceResolver Reviewed By: motiz88 Differential Revision: D25520686 fbshipit-source-id: 7c5845d5e6f130e719cf8725224589031037a61d
34 lines
868 B
JavaScript
34 lines
868 B
JavaScript
/**
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* Copyright (c) Facebook, Inc. and its 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 PixelRatio = require('../Utilities/PixelRatio');
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function AssetSourcePickScale(
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scales: Array<number>,
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deviceScale?: number,
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): number {
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if (deviceScale == null) {
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deviceScale = PixelRatio.get();
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}
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// Packager guarantees that `scales` array is sorted
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for (let i = 0; i < scales.length; i++) {
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if (scales[i] >= deviceScale) {
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return scales[i];
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}
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}
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// If nothing matches, device scale is larger than any available
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// scales, so we return the biggest one. Unless the array is empty,
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// in which case we default to 1
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return scales[scales.length - 1] || 1;
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}
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module.exports = AssetSourcePickScale;
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