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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 i react-native -g
$ react-native init myproject
import React, { Component } from 'react';
import {
AppRegistry,
Image,
Dimensions
} from 'react-native';
import ImageZoom from 'react-native-image-pan-zoom';
class ImageZoom 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>
)
}
}
AppRegistry.registerComponent('myproject', () => 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 | ()=>void | onClick | ()=>{} |
panToMove | boolean | allow to move picture with one finger | true |
pinchToZoom | boolean | allow scale with two fingers | true |
leaveStayTime | number | how many milliseconds after the finger presses to trigger onClick | 100 |
leaveDistance | 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 | ()=>void | on longPress | ()=> {} |
doubleClickInterval | number | time allocated for second click to be considered as doublClick event | 175 |
onMove | (object)=>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 |
Make sure you had installed react-native
with -g
before.
git clone https://github.com/ascoders/react-native-image-zoom.git
cd react-native-image-zoom/demo
npm install
npm start
Then, scan the QR, use your expo app.
FAQs
react native image pan zoom
The npm package react-native-image-pan-zoom receives a total of 44,128 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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