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App.js
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App.js
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import React, { Component } from 'react';
import PressureSignaturePad from './PressureSignaturePad';
import Stats from './Stats';
class App extends Component {
constructor(props) {
super(props);
this.state = {
signatureData: [], // current signature data
db: [], // database of signature data
}
this.save = this.save.bind(this);
this.export = this.export.bind(this);
this.addPoint = this.addPoint.bind(this);
}
save() {
this.setState({
db: [this.state.signatureData, ...this.state.db],
signatureData: []
});
var signature = this.refs.signature;
console.log('signature.toData()', signature.toData());
signature.clear();
}
export() {
var signature = this.refs.signature;
console.log(signature.toDataURL());
}
addPoint(p) {
this.setState({ signatureData: [...this.state.signatureData, p] });
}
render() {
const renderStats = (data) => (
<div className="row">
<div className="col-4">
<Stats color="#0275d8" data={data.map(i => i.pressure)} />
</div>
<div className="col-4">
<Stats color="#0275d8" data={data.map(i => i.x)} />
</div>
<div className="col-4">
<Stats color="#0275d8" data={data.map(i => i.y)} />
</div>
</div>
);
return (
<div className="App container-fluid">
<div className="row align-items-center">
<h1>React Pressure Signature Pad</h1>
</div>
<div className="row" >
<div className="col-12">
<PressureSignaturePad
style={{ height: '300px' }}
onChange={this.addPoint}
ref="signature" />
</div>
</div>
<div className="row">
<div className="col-12">
<div style={{ textAlign: 'center' }}>
<input className="btn btn-sm btn-outline-primary" type="button" onClick={this.save} value="Save data" />
<input className="btn btn-sm btn-outline-primary" style={{ marginLeft: '5px' }} type="button" onClick={this.export} value="Export image" />
</div>
</div>
</div>
<div className="row">
<hr />
</div>
<div className="row">
<div className="col-4">
<h5>Pressure</h5>
</div>
<div className="col-4">
<h5>X coordinate</h5>
</div>
<div className="col-4">
<h5>Y coordinate</h5>
</div>
</div>
{renderStats(this.state.signatureData)}
{this.state.db.map(entry => renderStats(entry))}
</div>
);
}
}
export default App;