react-native-full-calendars/lib/module/swiper/components/Page.js

React Native Full Calendar (RNFC) is an intuitive and powerful calendar component library designed for React Native.

"use strict";

import React, { useContext } from 'react';
import { StyleSheet } from 'react-native';
import Animated, { interpolate, makeMutable, useAnimatedStyle, useDerivedValue } from 'react-native-reanimated';
import { SwiperContext } from '../store';
import { jsx as _jsx } from "react/jsx-runtime";
const preInitSize = makeMutable(99999);
export const Page = ({
  index,
  pageAnim,
  pageWidth,
  pageHeight,
  isActive,
  style,
  viewSize
}) => {
  const {
    props
  } = useContext(SwiperContext);
  const {
    buffer,
    initialIndex,
    vertical,
    renderPage
  } = props;
  const translation = useDerivedValue(() => {
    const translate = (index - pageAnim.value) * viewSize.value;
    return translate;
  }, []);
  const focusAnim = useDerivedValue(() => {
    if (!viewSize.value) {
      return index - initialIndex;
    }
    return translation.value / viewSize.value;
  }, [initialIndex]);
  const animStyle = useAnimatedStyle(() => {
    const hasInitialized = !!viewSize.value;
    const isInactivePageBeforeInit = !(index === initialIndex) && !hasInitialized;
    const _pageWidth = isInactivePageBeforeInit ? preInitSize : pageWidth;
    const _pageHeight = isInactivePageBeforeInit ? preInitSize : pageHeight;
    return pageInterpolatorSlide({
      focusAnim,
      pageWidth: _pageWidth,
      pageHeight: _pageHeight,
      vertical
    });
  }, [pageWidth, pageHeight, pageAnim, index, initialIndex, translation, vertical, buffer]);
  return /*#__PURE__*/_jsx(Animated.View, {
    pointerEvents: isActive ? 'auto' : 'none',
    style: [style, styles.pageWrapper, animStyle, isActive && styles.activePage],
    children: renderPage({
      index,
      isActive,
      focusAnim,
      pageWidthAnim: pageWidth,
      pageHeightAnim: pageHeight,
      pageAnim
    })
  });
};
const styles = StyleSheet.create({
  pageWrapper: {
    left: 0,
    right: 0,
    top: 0,
    bottom: 0,
    position: 'absolute'
  },
  activePage: {
    position: 'relative'
  }
});
export const pageInterpolatorSlide = ({
  focusAnim,
  pageWidth,
  pageHeight,
  vertical
}) => {
  'worklet';

  const translateX = vertical ? 0 : interpolate(focusAnim.value, [-1, 0, 1], [-pageWidth.value, 0, pageWidth.value]);
  const translateY = vertical ? interpolate(focusAnim.value, [-1, 0, 1], [-pageHeight.value, 0, pageHeight.value]) : 0;
  return {
    transform: [{
      translateX
    }, {
      translateY
    }]
  };
};
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