Customization in React Signature component
30 Jan 202316 minutes to read
The Signature component draws stroke/path using moveTo() and lineTo() methods to connect one or more points while drawing in canvas. The stroke width can be modified by using its color and width. And the background can be modified by using its background color and background image.
Stroke Width
The variable stroke width is based on the values of maxStrokeWidth, minStrokeWidth and velocity for smoother and realistic signature. The default value of minimum stroke width is set as 0.5, maximum stroke width is set as 2.5 and velocity is set as 0.7.
In the following example, minimum stroke width is set as 0.5, maximum stroke width is set as 3 and velocity is set as 0.7.
import { SignatureComponent } from '@syncfusion/ej2-react-inputs';
import * as React from "react";
import * as ReactDOM from "react-dom";
function App() {
return (<div id='container'>
<div className='signature-control'>
<h4>Sign here</h4>
<SignatureComponent id='signature' maxStrokeWidth={3} minStrokeWidth={0.5} velocity={0.7}/>
</div>
</div>);
}
;
export default App;
ReactDOM.render(<App />, document.getElementById('element'));import { SignatureComponent } from '@syncfusion/ej2-react-inputs';
import * as React from "react";
import * as ReactDOM from "react-dom";
function App() {
return (
<div id='container'>
<div className='signature-control'>
<h4>Sign here</h4>
<SignatureComponent id='signature' maxStrokeWidth= {3} minStrokeWidth= {0.5} velocity= {0.7}/>
</div>
</div>
);
};
export default App;
ReactDOM.render(<App />, document.getElementById('element'));Stroke Color
Color of the stroke can be specified by using strokeColor property and it accepts hexadecimal code, RGB, and text. The default value of this property is “#000000”.
import { SignatureComponent } from '@syncfusion/ej2-react-inputs';
import { ButtonComponent } from '@syncfusion/ej2-react-buttons';
import { getComponent } from '@syncfusion/ej2-base';
import * as React from "react";
import * as ReactDOM from "react-dom";
function App() {
function clickEventHandler() {
let signature = getComponent(document.getElementById('signature'), 'signature');
let color = document.getElementById('text').value;
signature.strokeColor = color;
}
return (<div id='container'>
<div id="signature-base-control">
<div id="input">
<input type="text" id="text" placeholder="Enter the Stroke Color Value"></input>
<ButtonComponent onClick={clickEventHandler} isPrimary={true}>Set Stroke Color</ButtonComponent>
</div>
<div id="signature-control">
<SignatureComponent id='signature'/>
</div>
</div>
</div>);
}
;
export default App;
ReactDOM.render(<App />, document.getElementById('element'));import { SignatureComponent } from '@syncfusion/ej2-react-inputs';
import { ButtonComponent } from '@syncfusion/ej2-react-buttons';
import { getComponent, closest } from '@syncfusion/ej2-base';
import * as React from "react";
import * as ReactDOM from "react-dom";
function App() {
function clickEventHandler(): void {
let signature: SignatureComponent = getComponent(document.getElementById('signature'), 'signature');
let color: string = document.getElementById('text').value;
signature.strokeColor = color;
}
return (
<div id='container'>
<div id="signature-base-control">
<div id="input">
<input type="text" id="text" placeholder="Enter the Stroke Color Value"></input>
<ButtonComponent onClick={clickEventHandler} isPrimary={true}>Set Stroke Color</ButtonComponent>
</div>
<div id="signature-control">
<SignatureComponent id='signature'/>
</div>
</div>
</div>
);
};
export default App;
ReactDOM.render(<App />, document.getElementById('element'));Background Color
Background color of a signature can be specified by using backgroundColor property and it accepts hexadecimal code, RGB, and text. The default value of this property is “#ffffff”.
import { SignatureComponent } from '@syncfusion/ej2-react-inputs';
import { ButtonComponent } from '@syncfusion/ej2-react-buttons';
import { getComponent } from '@syncfusion/ej2-base';
import * as React from "react";
import * as ReactDOM from "react-dom";
function App() {
function clickEventHandler() {
let signature = getComponent(document.getElementById('signature'), 'signature');
let bgColor = document.getElementById('text').value;
signature.backgroundColor = bgColor;
}
return (<div id='container'>
<div id="signature-base-control">
<div id="input">
<input type="text" id="text" placeholder="Enter the Background Color Value"></input>
<ButtonComponent onClick={clickEventHandler} isPrimary={true}>Set Background Color</ButtonComponent>
</div>
<div id="signature-control">
<SignatureComponent id='signature'/>
</div>
</div>
</div>);
}
;
export default App;
ReactDOM.render(<App />, document.getElementById('element'));import { SignatureComponent } from '@syncfusion/ej2-react-inputs';
import { ButtonComponent } from '@syncfusion/ej2-react-buttons';
import { getComponent, closest } from '@syncfusion/ej2-base';
import * as React from "react";
import * as ReactDOM from "react-dom";
function App() {
function clickEventHandler(): void {
let signature: SignatureComponent = getComponent(document.getElementById('signature'), 'signature');
let bgColor: string = document.getElementById('text').value;
signature.backgroundColor = bgColor;
}
return (
<div id='container'>
<div id="signature-base-control">
<div id="input">
<input type="text" id="text" placeholder="Enter the Background Color Value"></input>
<ButtonComponent onClick={clickEventHandler} isPrimary={true}>Set Background Color</ButtonComponent>
</div>
<div id="signature-control">
<SignatureComponent id='signature'/>
</div>
</div>
</div>
);
};
export default App;
ReactDOM.render(<App />, document.getElementById('element'));Background Image
Background image of a signature can be specified by using backgroundImage property. The background image can be set by either hosting the image in our local IIS or online image.
import { SignatureComponent } from '@syncfusion/ej2-react-inputs';
import { ButtonComponent } from '@syncfusion/ej2-react-buttons';
import { getComponent } from '@syncfusion/ej2-base';
import * as React from "react";
import * as ReactDOM from "react-dom";
function App() {
function clickEventHandler() {
let signature = getComponent(document.getElementById('signature'), 'signature');
let url = document.getElementById('text').value;
signature.backgroundImage = url;
}
return (<div id='container'>
<div id="signature-base-control">
<div id="input">
<input type="text" id="text" placeholder="Enter the URL of the background Image"></input>
<ButtonComponent onClick={clickEventHandler} isPrimary={true}>Set Background Image</ButtonComponent>
</div>
<div id="signature-control">
<SignatureComponent id='signature'/>
</div>
</div>
</div>);
}
;
export default App;
ReactDOM.render(<App />, document.getElementById('element'));import { SignatureComponent } from '@syncfusion/ej2-react-inputs';
import { ButtonComponent } from '@syncfusion/ej2-react-buttons';
import { getComponent, closest } from '@syncfusion/ej2-base';
import * as React from "react";
import * as ReactDOM from "react-dom";
function App() {
function clickEventHandler(): void {
let signature: SignatureComponent = getComponent(document.getElementById('signature'), 'signature');
let url: string = document.getElementById('text').value;
signature.backgroundImage = url;
}
return (
<div id='container'>
<div id="signature-base-control">
<div id="input">
<input type="text" id="text" placeholder="Enter the URL of the background Image"></input>
<ButtonComponent onClick={clickEventHandler} isPrimary={true}>Set Background Image</ButtonComponent>
</div>
<div id="signature-control">
<SignatureComponent id='signature'/>
</div>
</div>
</div>
);
};
export default App;
ReactDOM.render(<App />, document.getElementById('element'));