mirror of
https://github.com/zhigang1992/react-native.git
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fd744dd56c
Summary: * Added snapToOffsets prop to ScrollView. Allows snapping at arbitrary points. * Fixed pagingEnabled not being overridden by snapToInterval on iOS. * Fixed Android *requiring* pagingEnabled to be defined alongside snapToInterval. * Added support for decelerationRate on Android. * Fixed snapping implementation. It was not calculating end position correctly at all (velocity is not a linear offset). * Resolves https://github.com/facebook/react-native/issues/20155 * Added support for new content being added during scroll (mirrors existing functionality in vertical ScrollView). * Added support for snapToInterval. * Resolves https://github.com/facebook/react-native/issues/19552 Reviewed By: yungsters Differential Revision: D9405703 fbshipit-source-id: b3c367b8079e6810794b0165dfdbcff4abff2eda
33 lines
665 B
JavaScript
33 lines
665 B
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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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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* @format
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* @flow
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*/
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'use strict';
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const Platform = require('Platform');
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function processDecelerationRate(
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decelerationRate: number | 'normal' | 'fast',
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): number {
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if (decelerationRate === 'normal') {
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return Platform.select({
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ios: 0.998,
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android: 0.985,
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});
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} else if (decelerationRate === 'fast') {
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return Platform.select({
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ios: 0.99,
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android: 0.9,
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});
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}
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return decelerationRate;
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}
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module.exports = processDecelerationRate;
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