diff options
author | Kirill Rogovoy <[email protected]> | 2021-07-20 21:24:52 +0300 |
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committer | Kirill Rogovoy <[email protected]> | 2021-07-20 21:24:52 +0300 |
commit | 5f4611d65e40eae3ca6191a15f68d69ea5a1c4cb (patch) | |
tree | 273dfc086444533d86d580961c92ba8d14781a67 /app_expo/components/auto-image | |
parent | f0bf4e7afdcd8b02a62be45ab3e7d047ed865a79 (diff) |
WIP
Diffstat (limited to 'app_expo/components/auto-image')
-rw-r--r-- | app_expo/components/auto-image/auto-image.story.tsx | 33 | ||||
-rw-r--r-- | app_expo/components/auto-image/auto-image.tsx | 46 |
2 files changed, 79 insertions, 0 deletions
diff --git a/app_expo/components/auto-image/auto-image.story.tsx b/app_expo/components/auto-image/auto-image.story.tsx new file mode 100644 index 0000000..af74efe --- /dev/null +++ b/app_expo/components/auto-image/auto-image.story.tsx @@ -0,0 +1,33 @@ +/* eslint-disable */ +import * as React from 'react' +import { storiesOf } from '@storybook/react-native' +import { StoryScreen, Story, UseCase } from '../../../storybook/views' +import { AutoImage } from './auto-image' + +declare let module + +const bowser = require('../../screens/welcome/bowser.png') +const morty = { + uri: 'https://rickandmortyapi.com/api/character/avatar/2.jpeg', +} + +storiesOf('AutoImage', module) + .addDecorator((fn) => <StoryScreen>{fn()}</StoryScreen>) + .add('Style Presets', () => ( + <Story> + <UseCase text="With require()"> + <AutoImage source={bowser} /> + <AutoImage source={bowser} style={{ width: 150 }} /> + <AutoImage source={bowser} style={{ width: 150, height: 150 }} /> + <AutoImage source={bowser} style={{ height: 150 }} /> + <AutoImage source={bowser} style={{ height: 150, resizeMode: 'contain' }} /> + </UseCase> + <UseCase text="With URL"> + <AutoImage source={morty} /> + <AutoImage source={morty} style={{ width: 150 }} /> + <AutoImage source={morty} style={{ width: 150, height: 150 }} /> + <AutoImage source={morty} style={{ height: 150 }} /> + <AutoImage source={morty} style={{ height: 150, resizeMode: 'contain' }} /> + </UseCase> + </Story> + )) diff --git a/app_expo/components/auto-image/auto-image.tsx b/app_expo/components/auto-image/auto-image.tsx new file mode 100644 index 0000000..a8bfe37 --- /dev/null +++ b/app_expo/components/auto-image/auto-image.tsx @@ -0,0 +1,46 @@ +import React, { useLayoutEffect, useState } from 'react' +import { + Image as RNImage, + ImageProps as DefaultImageProps, + ImageURISource, + Platform, +} from 'react-native' + +type ImageProps = DefaultImageProps & { + source: ImageURISource +} + +/** + * An Image wrapper component that autosizes itself to the size of the actual image. + * You can always override by passing a width and height in the style. + * If passing only one of width/height this image component will use the actual + * size of the other dimension. + * + * This component isn't required, but is provided as a convenience so that + * we don't have to remember to explicitly set image sizes on every image instance. + * + * To use as a stand-in replacement import { AutoImage as Image } and remove the + * Image import from react-native. Now all images in that file are handled by this + * component and are web-ready if not explicitly sized in the style property. + */ +export function AutoImage(props: ImageProps) { + const [imageSize, setImageSize] = useState({ width: 0, height: 0 }) + + useLayoutEffect(() => { + if (props.source?.uri) { + RNImage.getSize(props.source.uri as any, (width, height) => { + setImageSize({ width, height }) + }) + } else if (Platform.OS === 'web') { + // web requires a different method to get it's size + RNImage.getSize(props.source as any, (width, height) => { + setImageSize({ width, height }) + }) + } else { + const { width, height } = RNImage.resolveAssetSource(props.source) + setImageSize({ width, height }) + } + }, []) + + return <RNImage {...props} style={[imageSize, props.style]} /> +} |