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

🌈 React Native UI library

import React, { useState, useCallback, useRef, useEffect, memo } from 'react';
import { View, Text, Animated } from 'react-native';
import { getDefaultValue } from '../helpers';
import * as helpers from '../helpers';
import { usePersistFn } from '../hooks';
import Theme from '../theme';
import { varCreator } from './style';

/**
 * Progress 进度条
 */
const Progress = _ref => {
  let {
    percentage = 0,
    pivotText,
    color,
    trackColor,
    pivotColor,
    textColor,
    strokeWidth,
    inactive = false,
    showPivot = true,
    square = false,
    animated = false,
    animationDuration,
    onAnimationEnd
  } = _ref;
  const AnimatedValue = useRef(new Animated.Value(0)).current;
  const StartPercentage = useRef(percentage);
  const onAnimationEndPersistFn = usePersistFn(n => {
    onAnimationEnd === null || onAnimationEnd === void 0 ? void 0 : onAnimationEnd(n);
  });
  const TOKENS = Theme.useThemeTokens();
  const CV = Theme.createVar(TOKENS, varCreator); // 默认值

  color = getDefaultValue(color, CV.progress_color);

  if (inactive) {
    color = '#cacaca';
  }

  trackColor = getDefaultValue(trackColor, CV.progress_background_color);
  pivotColor = getDefaultValue(pivotColor, color);
  textColor = getDefaultValue(textColor, CV.progress_pivot_text_color);
  pivotText = getDefaultValue(pivotText, `${percentage}%`);
  strokeWidth = getDefaultValue(strokeWidth, CV.progress_height);
  animationDuration = getDefaultValue(animationDuration, TOKENS.animation_duration_base);
  const borderRadius = square ? 0 : strokeWidth / 2;
  const [progressLayout, setProgressLayout] = useState({
    width: 0,
    height: 0
  });
  const [textLayout, setTextLayout] = useState({
    width: 0,
    height: 0
  });
  useEffect(() => {
    const action = Animated.timing(AnimatedValue, {
      toValue: progressLayout.width * percentage / 100,
      duration: animated ? animationDuration : 0,
      easing: helpers.easing.easeInCubic,
      useNativeDriver: false
    });
    action.start(_ref2 => {
      let {
        finished
      } = _ref2;

      if (finished) {
        onAnimationEndPersistFn(percentage);
      }
    });
    return () => {
      action.stop();
    };
  }, [AnimatedValue, percentage, animationDuration, progressLayout.width, animated, onAnimationEndPersistFn]);
  const barStyle = {
    position: 'absolute',
    left: 0,
    top: 0,
    width: AnimatedValue,
    height: strokeWidth,
    backgroundColor: color,
    borderRadius: borderRadius
  };
  const textBoxStyle = {
    position: 'absolute',
    left: AnimatedValue,
    top: 0,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: pivotColor,
    paddingHorizontal: CV.progress_pivot_padding_horizontal,
    borderRadius: TOKENS.border_radius_max,
    transform: [{
      translateX: -textLayout.width / 2
    }, {
      translateY: -(textLayout.height - strokeWidth) / 2
    }]
  };
  const onLayoutProgress = useCallback(e => {
    AnimatedValue.setValue(e.nativeEvent.layout.width * StartPercentage.current / 100);
    setProgressLayout(e.nativeEvent.layout);
  }, [AnimatedValue]);
  const onLayoutText = useCallback(e => {
    setTextLayout(e.nativeEvent.layout);
  }, []);
  return /*#__PURE__*/React.createElement(View, {
    onLayout: onLayoutProgress,
    style: {
      height: strokeWidth,
      backgroundColor: trackColor,
      borderRadius: borderRadius
    }
  }, /*#__PURE__*/React.createElement(Animated.View, {
    style: barStyle
  }), showPivot ? /*#__PURE__*/React.createElement(Animated.View, {
    onLayout: onLayoutText,
    style: textBoxStyle
  }, /*#__PURE__*/React.createElement(Text, {
    style: {
      color: textColor,
      fontSize: CV.progress_pivot_font_size,
      lineHeight: CV.progress_pivot_line_height_scale * CV.progress_pivot_font_size
    }
  }, pivotText)) : null);
};

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