lidta-capacitor-bl-printer

lidta-capacitor-bl-printer is the first free Capacitor solution to fully support print most documents including html with structure and styles to blutooth pos thermal printers without breaking any sweat

Currently only available for android devices

Install

npm install lidta-capacitor-bl-printer
npx cap sync

API

• printBase64(...)
• connect(...)
• disconnect()

printBase64(...)

printBase64(options: { msg: string; align: number; }) => Promise<{ value: boolean; }>

Print base64 string

| Param | Type | | ------------- | -------------------------------------------- | | options | { msg: string; align: number; } |

Returns: Promise<{ value: boolean; }>

connect(...)

connect(options: { address: string; }) => Promise<{ value: boolean; }>

| Param | Type | | ------------- | --------------------------------- | | options | { address: string; } |

Returns: Promise<{ value: boolean; }>

disconnect()

disconnect() => Promise<{ value: boolean; }>

Returns: Promise<{ value: boolean; }>

Documentation

Visit Documentation Website

Vue 3 Capacitor 6 exmaple

The following component uses vue 3 with composition API Syntax

<script setup>
import { onMounted, ref } from 'vue'; //vue life cycle hooks(onMounted) and reactive (ref)
import html2canvas from 'html2canvas'; //converts the html or any text to base64Image
import { LidtaCapacitorBlPrinter } from 'lidta-capacitor-bl-printer'; //lidta-capacitor-bl-printer plugin

const devices = ref([]);
const connectedPrinter = ref({});
const content = ref(null);

const listDevices = async () => {
  await LidtaCapacitorBlPrinter.getPairedDevices().then((result) => {
      devices.value = result.devices || [];
  }).catch((error) => {
    alert(error);
  });
}

const printReceipt = async (device) => {
 await  LidtaCapacitorBlPrinter.connect({ address: device.address }).then(async () => {
   connectedPrinter.value = device.name;
   await  html2canvas(
      content.value,
    ).then(async (canvas) => {
    const base64Image =  canvas.toDataURL("image/png");
    LidtaCapacitorBlPrinter.printBase64({msg: base64Image, align: 1, /*0=>left 1=>center, 2=>right anything else=>invalid */ 
    }).then(() => { LidtaCapacitorBlPrinter.disconnect();
   }).catch((error) => alert(error)).finally(async () => {});
  }).catch((error) => alert(error));
  }).catch((error) => alert(error))
};  
</script>

The following template uses Vuetify

<template>
<div class=" mt-8">
  <div  class="text-center" >
    <VBtn color="warning" class="text-center" variant="tonal"  @click="listDevices">
      <VIcon icon="mdi-printer" size="24" color="info" ></VIcon>List Connected Devices</VBtn>
  </div>
  
 <div class="text-center">
   <VBtn variant="tonal" class="mt-1" v-for="device in devices" :key="device" @click="printReceipt(device)" color="indigo">
  <VIcon icon="mdi-printer" ></VIcon>  Print on {{ device.name }} 
  </VBtn>
 </div>
  <div class="text-center">
    connected {{ connectedPrinter?.name }}
  </div>

<div  ref="content" id="content">
    <h1>Hellow World</h1>
    <img  height="80" width="80" src="@/assets/logo.png"  />
</div>

Clone Full Vue 3 Capacitor 6 Example here

Useful Links

Official Website Lidta tech

Support the Project

This is the first free solution to fully support print most documents including html with structure and styles to blutooth pos thermal printers without breaking any sweat.

Your support is greatly appreciated and will help me keep improving this project.