react-native-paper-dates/lib/module/shared/utils.js

Performant Date Picker for React Native Paper

"use strict";

import { useRef } from 'react';
import { overlay, useTheme } from 'react-native-paper';
import Color from 'color';
export const supportedOrientations = ['portrait', 'portrait-upside-down', 'landscape', 'landscape-left', 'landscape-right'];
export function useLatest(value) {
  const ref = useRef(value);
  ref.current = value;
  return ref;
}
export function useHeaderBackgroundColor() {
  const theme = useTheme();
  if (theme.isV3) {
    return theme.colors.surface;
  }
  return theme.dark && theme.mode === 'adaptive' ? overlay(4, theme.colors.surface) : theme.colors.primary;
}
export function useHeaderColorIsLight() {
  const theme = useTheme();
  const background = theme.dark && theme.mode === 'adaptive' ? theme.colors.surface : theme.colors.primary;
  return Color(background).isLight();
}
export function useHeaderTextColor() {
  const theme = useTheme();
  const isLight = useHeaderColorIsLight();
  if (theme.isV3) {
    return theme.colors.onSurfaceVariant;
  }
  return !isLight ? '#fff' : '#000';
}
export function useTextColorOnPrimary() {
  const theme = useTheme();
  const isDark = !Color(theme.colors.primary).isLight();
  if (theme.isV3) {
    if (isDark && theme.dark) {
      return theme.colors.onSurface;
    } else {
      return theme.colors.onPrimary;
    }
  }
  return isDark ? '#fff' : '#000';
}
export function range(start, end) {
  return Array(end - start + 1).fill(null).map((_, i) => start + i);
}
export function lightenBy(color, ratio) {
  const lightness = color.lightness();
  return color.lightness(lightness + (100 - lightness) * ratio);
}
export function darkenBy(color, ratio) {
  const lightness = color.lightness();
  return color.lightness(lightness - lightness * ratio);
}
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