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interaktive-systeme/components/themed-components.tsx
Thomas Schleicher 04e73d2edb test commit
2023-11-30 13:59:43 +01:00

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TypeScript

import { Text as DefaultText, View as DefaultView, useColorScheme} from "react-native";
import colors from "../constants/colors";
type ThemeProperties = {
lightColor?: string;
darkColor?: string;
};
/**
* It is a TypeScript intersection type encompassing both ThemeProperties and DefaultReactComponent properties.
*/
export type TextProperties = ThemeProperties & DefaultText["props"];
export type ViewProperties = ThemeProperties & DefaultView["props"];
/**
* This function 'useThemeColor' allows you to apply different colors for light and dark theme mode in a React Native application.
* The function takes a 'properties' object (with possible 'light' and 'dark' properties representing color strings) and 'colorName' - a key from predefined colors for both 'light' and 'dark' mode.
* The function first checks the current color scheme using the 'useColorScheme' hook from React Native, defaulting to 'light' mode if none is defined.
* If no color is specified in 'properties' for current theme, the function falls back to returning a color corresponding to the provided 'colorName' from the predefined 'colors' object for the current theme.
*/
export function useThemeColor(
properties: {light?: string, dark?: string},
colorName: keyof typeof colors.light & keyof typeof colors.dark
) {
const theme = useColorScheme() ?? "light";
const colorFromProps = properties[theme];
if(colorFromProps) {
return colorFromProps;
}
return colors[theme][colorName];
}
export function Text(properties: TextProperties) {
const { style, lightColor, darkColor, ...otherProps } = properties;
const color = useThemeColor({ light: lightColor, dark: darkColor }, "color");
return <DefaultText style={[{ color }, style]} {...otherProps} />
}
export function View(properties: TextProperties) {
const { style, lightColor, darkColor, ...otherProps } = properties;
const backgroundColor = useThemeColor({ light: lightColor, dark: darkColor }, "backgroundColor");
return <DefaultView style={[{backgroundColor}, style]} {...otherProps}/>
}