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Only need flat encoding.

pull/3465/head
Eric de Boer 2024-04-09 09:19:15 +02:00
parent 1f596995e2
commit 50517444aa
4 changed files with 3 additions and 208 deletions
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38
apps/cards/EAN.js
View File

@ -1,27 +1,12 @@
//import { SIDE_BIN, MIDDLE_BIN } from './constants';
import { SIDE_BIN, MIDDLE_BIN } from './constants';
const Barcode = require("cards.Barcode.js");
const encode = require("cards.encode.js");
const Barcode = require("cards.Barcode.js");
// Base class for EAN8 & EAN13
class EAN extends Barcode {
constructor(data, options) {
super(data, options);
// Make sure the font is not bigger than the space between the guard bars
this.fontSize = !options.flat && options.fontSize > options.width * 10
? options.width * 10
: options.fontSize;
// Make the guard bars go down half the way of the text
this.guardHeight = options.height + this.fontSize / 2 + options.textMargin;
}
encode() {
return this.options.flat
? this.encodeFlat()
: this.encodeGuarded();
}
leftText(from, to) {
@ -40,24 +25,7 @@ class EAN extends Barcode {
return encode(data, structure);
}
encodeGuarded() {
const textOptions = { fontSize: this.fontSize };
const guardOptions = { height: this.guardHeight };
const SIDE_BIN = '101';
const MIDDLE_BIN = '01010';
return [
{ data: SIDE_BIN, options: guardOptions },
{ data: this.leftEncode(), text: this.leftText(), options: textOptions },
{ data: MIDDLE_BIN, options: guardOptions },
{ data: this.rightEncode(), text: this.rightText(), options: textOptions },
{ data: SIDE_BIN, options: guardOptions },
];
}
encodeFlat() {
const SIDE_BIN = '101';
const MIDDLE_BIN = '01010';
encode() {
const data = [
SIDE_BIN,
this.leftEncode(),

27
apps/cards/EAN13.js
View File

@ -60,33 +60,6 @@ class EAN13 extends EAN {
return super.rightEncode(data, 'RRRRRR');
}
// The "standard" way of printing EAN13 barcodes with guard bars
encodeGuarded() {
const data = super.encodeGuarded();
// Extend data with left digit & last character
if (this.options.displayValue) {
data.unshift({
data: '000000000000',
text: this.text.substr(0, 1),
options: { textAlign: 'left', fontSize: this.fontSize }
});
if (this.options.lastChar) {
data.push({
data: '00'
});
data.push({
data: '00000',
text: this.options.lastChar,
options: { fontSize: this.fontSize }
});
}
}
return data;
}
}
module.exports = EAN13;

78
apps/cards/UPC.js
View File

@ -12,19 +12,6 @@ class UPC extends Barcode{
}
super(data, options);
this.displayValue = options.displayValue;
// Make sure the font is not bigger than the space between the guard bars
if(options.fontSize > options.width * 10){
this.fontSize = options.width * 10;
}
else{
this.fontSize = options.fontSize;
}
// Make the guard bars go down half the way of the text
this.guardHeight = options.height + this.fontSize / 2 + options.textMargin;
}
valid(){
@ -33,15 +20,6 @@ class UPC extends Barcode{
}
encode(){
if(this.options.flat){
return this.flatEncoding();
}
else{
return this.guardedEncoding();
}
}
flatEncoding(){
var result = "";
result += "101";
@ -55,62 +33,6 @@ class UPC extends Barcode{
text: this.text
};
}
guardedEncoding(){
var result = [];
// Add the first digit
if(this.displayValue){
result.push({
data: "00000000",
text: this.text.substr(0, 1),
options: {textAlign: "left", fontSize: this.fontSize}
});
}
// Add the guard bars
result.push({
data: "101" + encode(this.data[0], "L"),
options: {height: this.guardHeight}
});
// Add the left side
result.push({
data: encode(this.data.substr(1, 5), "LLLLL"),
text: this.text.substr(1, 5),
options: {fontSize: this.fontSize}
});
// Add the middle bits
result.push({
data: "01010",
options: {height: this.guardHeight}
});
// Add the right side
result.push({
data: encode(this.data.substr(6, 5), "RRRRR"),
text: this.text.substr(6, 5),
options: {fontSize: this.fontSize}
});
// Add the end bits
result.push({
data: encode(this.data[11], "R") + "101",
options: {height: this.guardHeight}
});
// Add the last digit
if(this.displayValue){
result.push({
data: "00000000",
text: this.text.substr(11, 1),
options: {textAlign: "right", fontSize: this.fontSize}
});
}
return result;
}
}
// Calulate the checksum digit

68
apps/cards/UPCE.js
View File

@ -60,22 +60,6 @@ class UPCE extends Barcode{
return;
}
}
else{
return;
}
this.displayValue = options.displayValue;
// Make sure the font is not bigger than the space between the guard bars
if(options.fontSize > options.width * 10){
this.fontSize = options.width * 10;
}
else{
this.fontSize = options.fontSize;
}
// Make the guard bars go down half the way of the text
this.guardHeight = options.height + this.fontSize / 2 + options.textMargin;
}
valid(){
@ -83,15 +67,6 @@ class UPCE extends Barcode{
}
encode(){
if(this.options.flat){
return this.flatEncoding();
}
else{
return this.guardedEncoding();
}
}
flatEncoding(){
var result = "";
result += "101";
@ -104,49 +79,6 @@ class UPCE extends Barcode{
};
}
guardedEncoding(){
var result = [];
// Add the UPC-A number system digit beneath the quiet zone
if(this.displayValue){
result.push({
data: "00000000",
text: this.text[0],
options: {textAlign: "left", fontSize: this.fontSize}
});
}
// Add the guard bars
result.push({
data: "101",
options: {height: this.guardHeight}
});
// Add the 6 UPC-E digits
result.push({
data: this.encodeMiddleDigits(),
text: this.text.substring(1, 7),
options: {fontSize: this.fontSize}
});
// Add the end bits
result.push({
data: "010101",
options: {height: this.guardHeight}
});
// Add the UPC-A check digit beneath the quiet zone
if(this.displayValue){
result.push({
data: "00000000",
text: this.text[7],
options: {textAlign: "right", fontSize: this.fontSize}
});
}
return result;
}
encodeMiddleDigits() {
const numberSystem = this.upcA[0];
const checkDigit = this.upcA[this.upcA.length - 1];