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react-native-image-pan-zoom
Advanced tools
Readme
Zoom while sliding
Intelligent zoom
npm i react-native-image-pan-zoom --save
$ npm install -g create-react-native-app
$ create-react-native-app AwesomeProject
AwesomeProject/App.js
, like this:import { Image, Dimensions } from 'react-native';
import ImageZoom from 'react-native-image-pan-zoom';
export default class App extends React.Component {
render: function() {
return (
<ImageZoom cropWidth={Dimensions.get('window').width}
cropHeight={Dimensions.get('window').height}
imageWidth={200}
imageHeight={200}>
<Image style={{width:200, height:200}}
source={{uri:'http://v1.qzone.cc/avatar/201407/07/00/24/53b9782c444ca987.jpg!200x200.jpg'}}/>
</ImageZoom>
)
}
}
Props | Type | Description | DefaultValue |
---|---|---|---|
cropWidth(required) | number | operating area width | 100 |
cropHeight(required) | number | operating area height | 100 |
imageWidth(required) | number | picture width | 100 |
imageHeight(required) | number | picture height | 100 |
onClick | (eventParams: IOnClick)=>void | onClick | ()=>{} |
onDoubleClick | (eventParams: IOnClick)=>void | onDoubleClick | ()=>{} |
panToMove | boolean | allow to move picture with one finger | true |
pinchToZoom | boolean | allow scale with two fingers | true |
clickDistance | number | how many finger movement can also trigger onClick | 10 |
horizontalOuterRangeOffset | (offsetX?: number)=>void | horizontal beyond the distance, the parent to do picture switching, you can listen to this function. When this function is triggered, you can do the switch operation | ()=>{} |
onDragLeft | ()=>void | trigger to switch to the left of the graph, the left sliding speed exceeds the threshold when triggered | ()=>{} |
responderRelease | (vx: number)=>void | let go but do not cancel | ()=>{} |
maxOverflow | number | maximum sliding threshold | 100 |
longPressTime | number | long press threshold | 800 |
onLongPress | (eventParams: IOnClick)=>void | on longPress | ()=> {} |
doubleClickInterval | number | time allocated for second click to be considered as doublClick event | 175 |
onMove | ( position: IOnMove )=>void | reports movement position data (helpful to build overlays) | ()=> {} |
centerOn | { x: number, y: number, scale: number, duration: number } | if given this will cause the map to pan and zoom to the desired location | undefined |
enableSwipeDown | boolean | for enabling vertical movement if user doesn't want it | false |
enableCenterFocus | boolean | for disabling focus on image center if user doesn't want it | true |
onSwipeDown | () => void | function that fires when user swipes down | null |
swipeDownThreshold | number | threshold for firing swipe down function | 230 |
minScale | number | minimum zoom scale | 0.6 |
maxScale | number | maximum zoom scale | 10 |
useNativeDriver | boolean | Whether to animate using useNativeDriver | false |
onStartShouldSetPanResponder | () => boolean | Override onStartShouldSetPanResponder behavior | () => true |
onMoveShouldSetPanResponder | () => boolean | Override onMoveShouldSetPanResponder behavior | undefined |
onPanResponderTerminationRequest | () => boolean | Override onMoveShouldSetPanResponder behavior | () => false |
useHardwareTextureAndroid | boolean | for disabling rendering to hardware texture on Android | true |
Method | params | Description |
---|---|---|
reset | Reset the position and the scale of the image | |
resetScale | Reset the scale of the image | |
centerOn | ICenterOn | Centers the image in the position indicated. ICenterOn={ x: number, y: number, scale: number, duration: number } |
After clone this repo, then:
npm install
npm start
cd demo
npm install
npm start
Then, scan the QR, use your expo app.
Thanks goes to these wonderful people (emoji key):
Darius 💻 | Thomas P. 💻 | Juan Di Toro 💻 | Alhaytham Elhassan 💻 | Alexander Pataridze 💻 | Peter Xu 💻 |
This project follows the all-contributors specification. Contributions of any kind welcome!
FAQs
react native image pan zoom
The npm package react-native-image-pan-zoom receives a total of 56,554 weekly downloads. As such, react-native-image-pan-zoom popularity was classified as popular.
We found that react-native-image-pan-zoom demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
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