47 lines
1.2 KiB
JavaScript
47 lines
1.2 KiB
JavaScript
// @flow
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import React from 'react';
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import ReactCSSTransitionGroup from 'react-addons-css-transition-group';
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import styled, { keyframes } from 'styled-components';
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import { Flex } from 'reflexbox';
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import { randomInteger } from 'utils/random';
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const randomValues = Array.from(
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new Array(5),
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() => `${randomInteger(85, 100)}%`
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);
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export default () => {
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return (
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<ReactCSSTransitionGroup
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transitionName="fadeIn"
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transitionAppear
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transitionEnter
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transitionLeave
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transitionAppearTimeout={0}
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transitionEnterTimeout={0}
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transitionLeaveTimeout={0}
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>
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<Flex column auto>
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<Mask style={{ width: randomValues[0] }} header />
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<Mask style={{ width: randomValues[1] }} />
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<Mask style={{ width: randomValues[2] }} />
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<Mask style={{ width: randomValues[3] }} />
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</Flex>
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</ReactCSSTransitionGroup>
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);
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};
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const pulsate = keyframes`
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0% { opacity: 1; }
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50% { opacity: 0.5; }
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100% { opacity: 1; }
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`;
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const Mask = styled(Flex)`
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height: ${props => (props.header ? 28 : 18)}px;
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margin-bottom: ${props => (props.header ? 32 : 14)}px;
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background-color: #ddd;
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animation: ${pulsate} 1.3s infinite;
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`;
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