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Direct printing from Browser

I'm web developer, and get project to make some Point Of Sale (POS) software. I have trouble when i need print some receipt especially with POS printer, so i make this project.

Recta need desktop software calledRecta Host, it serve all hardware connection and bridge with Browser via Websocket

• You need to installRecta Host on every host that will be used for print, checkouthere to more information.

Just include it like other JS library

...<scriptsrc="https://cdn.jsdelivr.net/npm/recta/dist/recta.js"></script>...

Recta support commonjs module, so if you using webpack for your project. you can easly using it like other module

1. Install package

$ npm install --save recta

2. Import in your code

// using CommonJSvarRecta=require('recta')// using ES6 styleimportRectafrom'recta'

<scripttype="text/javascript">// ...varprinter=newRecta('APPKEY','1811')functiononClick(){printer.open().then(function(){printer.align('center').text('Hello World !!').bold(true).text('This is bold text').bold(false).underline(true).text('This is underline text').underline(false).barcode('CODE39','123456789').cut().print()})}// ...</script>

Create a new Recta object, parameter:

• Key: APPKEY used to authentication with Host, You can see on yourRecta Host Configuration
• Port: port of host,default: 1811

open connection to printer host.

returnPromise

print text.

note: it automaticaly add linefeed(\n) use.raw() instead if you wouldn’t add linefeed.

set horizontal text align, parameter value can be:

• LEFT
• CENTER
• RIGHT

turn emphasized mode on / off,default: true

turn underline mode on / off, set2 for set 2-dot width underline,default: true

select character font'A' or'B'

select print modes, parameter:

• font: select character font, value:'A' or'B',default:'A'
• emphasized: turn on / off emphasized / bold mode, value:true orfalse,default:false
• doubleHeight: turn on / off double height mode, value:true orfalse,default:false
• doubleWidth: turn on / off double width mode, value:true orfalse,default:false
• underline: turn on / off underline mode, value:true orfalse,default:false

cut paper, parameter:

• partial: iftrue execute partial cut (one point left uncut) else cut paper completely (full cut), value:true orfalse,default:false
• linefeed: add linefeed, value:integer,default: 4

print barcode, parameter

• type: type of Barcode, value:
  • UPC-A
  • UPC-E
  • EAN13
  • EAN8
  • CODE39
  • ITF
  • CODABAR
  • CODE93
  • CODE128
• barcode: content barcode, value:string
• barcodeHeight: set barcode height(optional), value:integer

set barcode height, value can be range: 1 ≤ n ≤ 255

add linefeed as much as n,default: 4

print raw text / buffer

send print command to printer.printer wouldn’t execute until you call this

send reset instruction to printer

return a sliced Buffer instance and clear buffer

returnBuffer

clear buffer

close connection to host

returnPromise

Fired upon successful connection

Fired upon disconnected

Fired when an error occurs

• Fork this repo
• Clone your repo
• Install dependencies
• Checkout a feature branch
• Feel free to add your features
• Make sure your features are fully tested
• Open a pull request, and enjoy <3

This project is licensed under the MIT License - see theLICENSE.md file for details