ng-thermal-print
v1.0.3
Published
An angular module to add thermal printing capabilities.
Downloads
850
Maintainers
Readme
Angular Thermal Printer Library
A library for connecting Angular apps with thermal printers.
Drivers
WEBUSB API (No drivers needed. Only works with Chrome and Opera with USB connection)
WebPRNT (http)
Print Language Drivers
ESC/POS
StarPRNT
Star WebPRNT
Installation
Install library
npm install ng-thermal-print
Import into your application
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { ThermalPrintModule } from 'ng-thermal-print'; //add this line
import { AppComponent } from './app.component';
@NgModule({
declarations: [
AppComponent
],
imports: [
BrowserModule,
ThermalPrintModule //add this line
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
Example Usage
app.component.ts
import { PrintService, UsbDriver, WebPrintDriver } from 'ng-thermal-print';
import { Component } from '@angular/core';
import { PrintDriver } from 'ng-thermal-print/lib/drivers/PrintDriver';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
status: boolean = false;
usbPrintDriver: UsbDriver;
webPrintDriver: WebPrintDriver;
ip: string = '';
constructor(private printService: PrintService) {
this.usbPrintDriver = new UsbDriver();
this.printService.isConnected.subscribe(result => {
this.status = result;
if (result) {
console.log('Connected to printer!!!');
} else {
console.log('Not connected to printer.');
}
});
}
requestUsb() {
this.usbPrintDriver.requestUsb().subscribe(result => {
this.printService.setDriver(this.usbPrintDriver, 'ESC/POS');
});
}
connectToWebPrint() {
this.webPrintDriver = new WebPrintDriver(this.ip);
this.printService.setDriver(this.webPrintDriver, 'WebPRNT');
}
print(driver: PrintDriver) {
this.printService.init()
.setBold(true)
.writeLine('Hello World!')
.setBold(false)
.feed(4)
.cut('full')
.flush();
}
}
app.component.html
<strong>Status: {{status}}</strong>
<div>
<input [(ngModel)]="ip" type="text" name="ip" placeholder="IP of printer with WebPRNT">
<button (click)="connectToWebPrint()">Connect to WebPRNT</button>
</div>
<div>
<button (click)="requestUsb()">Connect to USB</button>
</div>
<div>
<button (click)="print()" [disabled]="status === false"> Print!</button>
</div>