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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 | 1x 1x 32x 1x 16x 16x 16x 1x 1x 1x | /**
* Copyright (c) Nicolas Gallagher.
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow
*/
import type { ViewProps } from '../View';
import * as React from 'react';
import StyleSheet from '../StyleSheet';
import View from '../View';
const accessibilityValue = { max: 1, min: 0 };
const createSvgCircle = (style) => (
<circle cx="16" cy="16" fill="none" r="14" strokeWidth="4" style={style} />
);
type ActivityIndicatorProps = {
...ViewProps,
animating?: boolean,
color?: ?string,
hidesWhenStopped?: boolean,
size?: 'small' | 'large' | number
};
const ActivityIndicator: React.AbstractComponent<
ActivityIndicatorProps,
React.ElementRef<typeof View>
> = React.forwardRef((props, forwardedRef) => {
const {
animating = true,
color = '#1976D2',
hidesWhenStopped = true,
size = 'small',
style,
...other
} = props;
const svg = (
<svg height="100%" viewBox="0 0 32 32" width="100%">
{createSvgCircle({
stroke: color,
opacity: 0.2
})}
{createSvgCircle({
stroke: color,
strokeDasharray: 80,
strokeDashoffset: 60
})}
</svg>
);
return (
<View
{...other}
accessibilityRole="progressbar"
accessibilityValue={accessibilityValue}
ref={forwardedRef}
style={[styles.container, style]}
>
<View
children={svg}
style={[
typeof size === 'number' ? { height: size, width: size } : indicatorSizes[size],
styles.animation,
!animating && styles.animationPause,
!animating && hidesWhenStopped && styles.hidesWhenStopped
]}
/>
</View>
);
});
ActivityIndicator.displayName = 'ActivityIndicator';
const styles = StyleSheet.create({
container: {
alignItems: 'center',
justifyContent: 'center'
},
hidesWhenStopped: {
visibility: 'hidden'
},
animation: {
animationDuration: '0.75s',
animationKeyframes: [
{
'0%': { transform: [{ rotate: '0deg' }] },
'100%': { transform: [{ rotate: '360deg' }] }
}
],
animationTimingFunction: 'linear',
animationIterationCount: 'infinite'
},
animationPause: {
animationPlayState: 'paused'
}
});
const indicatorSizes = StyleSheet.create({
small: {
width: 20,
height: 20
},
large: {
width: 36,
height: 36
}
});
export default ActivityIndicator;
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