react-native-epson-tm82

React-Native plugin for Epson POS printer Model TM-T82 Ethernet (Android Only).

Any questions or bug please raise a issue.

##Still under development

Installation

$3

Install via NPM
``bash
npm install rn-epson-tm82 --save
`

or install via Yarn
`bash
yarn add rn-epson-tm82 --save
`

$3

Link the plugin to your RN project
`bash
react-native link rn-epson-tm82
`

Or you may need to link manually

on your android/settings.gradle
`bash
...
include ':rn-epson-tm82'
project(':rn-epson-tm82').projectDir = new File(rootProject.projectDir, '../node_modules/rn-epson-tm82/android')
`

on your android/app/build.gradle
`bash
...
dependencies{
...
implementation project(':rn-epson-tm82')
}
`

on your android/app/src/main/java/com/yourpackagename/MainApplication.java

Import Section
`Java
import com.nowarzz.rnepson.RNReactNativeEpsonTm82Package;
...

protected List getPackages() {
...
,new RNReactNativeEpsonTm82Package()
}
`

$3

Refers to your JS files
`javascript
import TM from 'rn-epson-tm82';
`

Usage and APIs ##

$3

* initialize ==> To initialize printer configuration
`javascript
await TM.initialize();
`

*writeText ==> Add text to printer buffer
//TODO: add parameter to customize text
`javascript
const option = {
bold: true,
fontSize:2
}
await TM.writeText("My Label Here",option);
`
#### Options for write text ####
##### bold #####
true or false
##### fontSize #####
range of 1 to 8. Max 8. Standard usage is between 1 to 2.


*printColumn ==> Split text based on column
//TODO: add parameter to customize text
`javascript
const column = [16,16,16];
const align =[TM.ALIGN_LEFT,TM.ALIGN_CENTER,TM.ALIGN_RIGHT];
await TM.printColumn(column,align,["Align Left","Align Center","Align Right"],{});

`

*writeQRCode ==> Add QR Code to buffer.
`javascript
const msg = "QRCODE TEXT";
await TM.writeQRCode(msg);
`

*writeImage ==> Add image to buffer. Accept only base64 string
`javascript
const image = "BASE64 encoded string";
await TM.writeImage(image,options);
`
#### Options for image ####
##### width #####
label width. height will auto calculate based on image ratio

*writeFeed ==> Add feed to paper
`javascript
await TM.writeFeed(1);
`

*writeCut ==> Cut paper
`javascript
await TM.writeCut();
`

*startPrint ==> Start printing from the feed to target IP address
`javascript
await TM.startPrint(ipAddress);
`
#### Options for start print ####
##### ipAddress #####
IP Address on String "000.000.000.000" format. Example: "192.168.192.168"

$3

*Initialize ==> Initialize Discovery searching
`javascript
await TM.initializeDiscovery();
`

*Start Discovery ==> Start to Discover Printer
`javascript
await TM.startDiscovery();
`

*Stop Discovery ==> Stop to Discover Printer
`javascript
await TM.stopDiscovery();
`

//TODO: add test print script

$3

`javascript

await TM.initialize();
await TM.writeText("My Restaurant Cafe\n");
await TM.writeText("------------------------------------------------\n");
const column = [4, 26, 9, 9];
const align = [2, 0, 2, 2];
await TM.printColumn(column, align, [Qty, "Item Name", "Price", "Amount"], {});
await TM.writeText("------------------------------------------------\n");
await TM.printColumn(column, align, [1, "Rice", "$1.0", "$1.0"], {});
await TM.printColumn(column, align, [2, "Ice Water", "$1.0", "$2.0"], {});
await TM.printColumn(column, align, [3, "Espresso", "$1.0", "$3.0"], {});
await TM.printColumn(column, align, [4, "Banana Split", "$1.0", "$4.0"], {});
await TM.printColumn(column, align, [5, "Tenderloin Steak", "$1.0", "$5.0"], {});
await TM.printColumn(column, align, [6, "Soup of the day", "$1.0", "$6.0"], {});
await TM.writeText("------------------------------------------------\n");
const totalColumn = [30,18];
const totalAlign = [0,2];
await TM.printColumn(totalColumn,totalAlign,["Total","$21.0"],{});
await TM.writeFeed(2);
await TM.writeText("Thank you. Please come back again");
await TM.startPrint();
`

$3

if you are using Proguard on Release, add this syntax to your android/app/proguard-rules.pro

`
-keep class com.epson.* {;}
-dontwarn com.epson.**
``