@fruits-chain/react-native-xiaoshu/lib/module/loading/loading-circular.js

🌈 React Native UI library

function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }

import React, { useRef, useMemo, memo } from 'react';
import { Animated } from 'react-native';
import { Svg, Circle } from 'react-native-svg';
import { getDefaultValue } from '../helpers';
import Theme from '../theme';
import { varCreator } from './style';
import useLoop from './useLoop';
const AnimatedCircle = Animated.createAnimatedComponent(Circle);
const STROKE_WIDTH = 2;

const Circular = _ref => {
  let {
    size,
    color
  } = _ref;
  const TOKENS = Theme.useThemeTokens();
  const CV = Theme.createVar(TOKENS, varCreator);
  const AnimatedCircle0Value = useRef(new Animated.Value(0)).current;
  const AnimatedCircle1Value = useRef(new Animated.Value(0)).current;
  const AnimatedCircle2Value = useRef(new Animated.Value(0)).current;
  size = getDefaultValue(size, CV.loading_icon_size);
  color = getDefaultValue(color, CV.loading_icon_color);
  const circle1Props = useMemo(() => {
    const center = Math.floor(size / 2);
    const radios = Math.floor(center - STROKE_WIDTH / 2);
    return {
      cy: center,
      cx: center,
      r: radios
    };
  }, [size]);
  const circle2Props = useMemo(() => {
    const center = Math.floor(size / 2);
    const radios = Math.floor(center - STROKE_WIDTH / 2 - center / 2);
    return {
      cy: center,
      cx: center,
      r: radios
    };
  }, [size]);
  const half1Circle = useMemo(() => circle1Props.r * Math.PI, [circle1Props.r]);
  const half2Circle = useMemo(() => circle2Props.r * Math.PI, [circle2Props.r]);
  useLoop(AnimatedCircle0Value, 0, {
    toValue: 1,
    duration: CV.loading_icon_animation_duration
  });
  useLoop(AnimatedCircle1Value, half1Circle, {
    toValue: -half1Circle * 2,
    duration: CV.loading_icon_animation_duration * 1.5
  });
  useLoop(AnimatedCircle2Value, half2Circle, {
    toValue: -half2Circle * 2,
    duration: CV.loading_icon_animation_duration * 2.5
  });
  const iconStyle = {
    justifyContent: 'center',
    alignItems: 'center',
    width: size,
    height: size,
    transform: [{
      rotateZ: AnimatedCircle0Value.interpolate({
        inputRange: [0, 1],
        outputRange: ['-90deg', '270deg']
      })
    }]
  };
  return /*#__PURE__*/React.createElement(Animated.View, {
    style: iconStyle
  }, /*#__PURE__*/React.createElement(Svg, {
    width: "100%",
    height: "100%" // style={{ backgroundColor: 'rgba(0,0,0,0.2)' }}

  }, /*#__PURE__*/React.createElement(AnimatedCircle, _extends({}, circle1Props, {
    stroke: color,
    strokeWidth: STROKE_WIDTH,
    strokeDasharray: `${half1Circle},${half1Circle * 2}`,
    strokeLinecap: "round" // strokeDashoffset={half1Circle - half1Circle - half1Circle - 10}
    ,
    strokeDashoffset: AnimatedCircle1Value,
    fill: "none"
  })), /*#__PURE__*/React.createElement(AnimatedCircle, _extends({}, circle2Props, {
    stroke: color,
    strokeWidth: STROKE_WIDTH,
    strokeDasharray: `${half2Circle},${half2Circle * 2}`,
    strokeLinecap: "round" // strokeDashoffset={half1Circle - half1Circle - half1Circle - 10}
    ,
    strokeDashoffset: AnimatedCircle2Value,
    fill: "none"
  }))));
};

export default /*#__PURE__*/memo(Circular);
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