added STAR printer essential milestone and its example

Author: daveleee

examples/star_printer_index.js

@@ -0,0 +1,27 @@
+'use strict';
+const escpos = require('..');
+
+// const device  = new escpos.USB(0x0416, 0x5011);
+// const device  = new escpos.RawBT();
+const device  = new escpos.Network('STARPrinterIPAddress');
+// const device  = new escpos.Serial('/dev/usb/lp0');
+const printer = new escpos.Printer(device);
+
+device.open(function(err){
+  printer
+  .font('a')
+  .align("STAR_CA")
+  .style('bu')
+  .size(1, 1)
+  .emphasize()
+  .text('The quick brown fox jumps over the lazy dog')
+  .cancelEmphasize()
+  .align("STAR_LA")
+  .text('敏捷的棕色狐狸跳过懒狗')
+  .align("STAR_RA")
+  .barcode('1234567', 'EAN8')
+  .qrimage('https://github.com/song940/node-escpos', function(err){
+    this.fullCut()
+    this.close();
+  });
+});

packages/printer/src/commands.ts

@@ -88,6 +88,7 @@ export const PAPER = {
   PAPER_PART_CUT: '\x1d\x56\x01', // Partial cut paper
   PAPER_CUT_A: '\x1d\x56\x41', // Partial cut paper
   PAPER_CUT_B: '\x1d\x56\x42', // Partial cut paper
+  STAR_FULL_CUT: '\x1B\x64\x02' , // STAR printer - Full cut
 };
 
 /**
@@ -100,6 +101,8 @@ export const TEXT_FORMAT = {
   TXT_2HEIGHT: '\x1b\x21\x10', // Double height text
   TXT_2WIDTH: '\x1b\x21\x20', // Double width text
   TXT_4SQUARE: '\x1b\x21\x30', // Double width & height text
+  STAR_TXT_EMPHASIZED: '\x1B\x45', // STAR printer - Select emphasized printing
+  STAR_CANCEL_TXT_EMPHASIZED: '\x1B\x46', // STAR printer - Cancel emphasized printing
 
   TXT_CUSTOM_SIZE: function(width: number, height: number) { // other sizes
     width = width > 8 ? 8 : width;
@@ -155,6 +158,10 @@ export const TEXT_FORMAT = {
   TXT_ALIGN_LT: '\x1b\x61\x00', // Left justification
   TXT_ALIGN_CT: '\x1b\x61\x01', // Centering
   TXT_ALIGN_RT: '\x1b\x61\x02', // Right justification
+
+  STAR_TXT_ALIGN_LA: '\x1B\x1D\x61\x00', // STAR printer - Left alignment
+  STAR_TXT_ALIGN_CA: '\x1B\x1D\x61\x01', // STAR printer - Center alignment
+  STAR_TXT_ALIGN_RA: '\x1B\x1D\x61\x02', // STAR printer - Right alignment
 };
 
 /**

packages/printer/src/index.ts

@@ -901,6 +901,33 @@ export class Printer<AdapterCloseArgs extends []> extends EventEmitter {
       });
     });
   }
+
+  /**
+   * STAR printer - Paper cut instruction
+   * @return {[Printer]} printer  [the escpos printer instance]
+   */
+  starFullCut() {
+    this.buffer.write(_.PAPER.STAR_FULL_CUT);
+    return this;
+  };
+
+  /**
+   * STAR printer - Select emphasized printing
+   * @return {[Printer]} printer  [the escpos printer instance]
+   */
+  emphasize() {
+    this.buffer.write(_.TEXT_FORMAT.STAR_TXT_EMPHASIZED);
+    return this;
+  };
+
+  /**
+   * STAR printer - Cancel emphasized printing
+   * @return {[Printer]} printer  [the escpos printer instance]
+   */
+  cancelEmphasize() {
+    this.buffer.write(_.TEXT_FORMAT.STAR_CANCEL_TXT_EMPHASIZED);
+    return this;
+  }
 }
 
 export default Printer;