Draw in Angular Signature component

21 Sep 20226 minutes to read

Draw

The draw method is used to drawn a text as signature with different font families like Arial, Serif, with different font sizes. It accepts text, font family, font size as its parameters. The default font family is “Arial”, and the default font size is “30”.

import { Component, ViewChild } from '@angular/core';
import { enableRipple } from '@syncfusion/ej2-base';
import { SignatureComponent } from '@syncfusion/ej2-angular-inputs';
import { DropDownListComponent } from '@syncfusion/ej2-angular-dropdowns';

@Component({
    selector: 'app-root',
    template: `<div id="signature-control">
           <canvas ejs-signature #signature id="signature"></canvas>
        </div>
        <div id="input">
            <table>
                <tbody>
                    <tr>
                        <td><div>Enter the Text:</div></td>
                        <td><input type="text" id="text" placeholder="Enter the Text"></td>
                    </tr>
                    <tr>
                        <td><div>Font Family:</div></td>
                        <td><ejs-dropdownlist id='font' #font [dataSource]='fontItems' [value]='fontValue' [fields]='fontfields' [popupHeight]='height'></ejs-dropdownlist>
                        </td>
                    </tr>
                    <tr>
                        <td><div>Font Size:</div></td>
                        <td><ejs-dropdownlist id='size' #size [dataSource]='sizeData' [value]='sizeValue' [fields]='sizefields' [popupHeight]='height'></ejs-dropdownlist>
                        </td>
                    </tr>
                </tbody>
            </table>
            <br>
            <button ejs-button cssClass="e-primary" (click)="onDraw()">Draw</button>
        </div>`
})
export class AppComponent {
    @ViewChild('signature')
    public signature: SignatureComponent;
    @ViewChild('font')
    public font: DropDownListComponent;
    @ViewChild('size')
    public size: DropDownListComponent;
    public fontValue: string = 'Arial';
    public sizeValue: number = '20';
    public height: string = '200px';
    public fontItems: Object[] = [
        { value: 'Arial' },
        { value: 'Serif' },
        { value: 'Sans-serif' },
        { value: 'Cursive' },
        { value: 'Fantasy' }
    ];
    public fontfields: Object = { text: 'value', value: 'value' };
    public sizeData: Object[] = [
        { value: '20' },
        { value: '30' },
        { value: '40' },
        { value: '50' }
    ];
    public sizefields: Object = { text: 'value', value: 'value' };
    onDraw(): void {
        let text = document.getElementById('text').value;
        this.signature.draw(text, this.font.value, this.size.value);
    }
}
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule } from '@angular/forms';
import { AppComponent } from './app.component';
import { SignatureComponent } from '@syncfusion/ej2-angular-inputs';
import { DropDownListModule } from '@syncfusion/ej2-angular-dropdowns';
import { ButtonModule } from '@syncfusion/ej2-angular-buttons';
import { enableRipple } from '@syncfusion/ej2-base';

enableRipple(true);

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule,FormsModule, DropDownListModule,ButtonModule
    ],
    declarations: [AppComponent, SignatureComponent],
    bootstrap: [AppComponent]
})
export class AppModule { }
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);