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| import React, { Component } from 'react'; | |
| import { Platform, View, WebView } from 'react-native'; | |
| import HeatmapUtils from '../../utils/HeatmapUtils'; | |
| export default class Heatmap extends Component { | |
| componentDidMount() { | |
| setTimeout( | |
| () => { | |
| // https://github.com/facebook/react-native/issues/953 | |
| this.refs.heatmap.measure((ox, oy, width, height) => { | |
| const radius = Math.round(width * 0.05); | |
| const processedPoints = HeatmapUtils.processPoints(this.props.firstPoint, | |
| this.props.secondPoint, | |
| this.props.thirdPoint, | |
| this.props.points, | |
| width, height, radius); | |
| this.setState({ processedPoints, radius }); | |
| }); | |
| } | |
| ); | |
| } | |
| render() { | |
| let webview = null; | |
| if (this.state.processedPoints) { | |
| const uri = Platform.OS === 'ios' ? 'heatmap.html' : 'file:///android_asset/heatmap.html'; | |
| const maxValue = Math.max(...this.state.processedPoints.map((p) => p.value)); | |
| const script = heatmapInputGenerator(this.state.processedPoints, this.state.radius, maxValue); | |
| webview = <WebView | |
| source={{ uri: uri }} | |
| scrollEnabled={false} | |
| injectedJavaScript={script} | |
| javaScriptEnabled | |
| />; | |
| } | |
| return ( | |
| <View style={{ alignItems: 'center', flex: 1, justifyContent: 'center'}} > | |
| <View | |
| style={{ backgroundColor: 'white', height: 100, width: 300 }} | |
| ref='heatmap' | |
| > | |
| { webview } | |
| </View> | |
| </View> | |
| ); | |
| } | |
| } |
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