mirror of
https://github.com/opensourcepos/opensourcepos.git
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325 lines
9.0 KiB
PHP
325 lines
9.0 KiB
PHP
<?php
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/**
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*
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* @package Barcode Creator
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* @copyright (c) 2011 emberlabs.org
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* @license http://opensource.org/licenses/mit-license.php The MIT License
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* @link https://github.com/samt/barcode
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*
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* Minimum Requirement: PHP 5.3.0
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*/
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namespace emberlabs\Barcode;
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/**
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* emberlabs Barcode Creator - Code128
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* Generate Code128 Barcodes
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*
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*
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* @license http://opensource.org/licenses/mit-license.php The MIT License
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* @link https://github.com/samt/barcode
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*/
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class Code128 extends BarcodeBase
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{
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/*
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* Sub Type encoding
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* @var int (should be a class constant)
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*/
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private $type = self::TYPE_AUTO;
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/*
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* This map maps the bar code to the common index. We use the built-in
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* index that PHP gives us to produce the common index.
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* @var static array
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*/
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private static $barMap = array(
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11011001100, 11001101100, 11001100110, 10010011000, 10010001100, // 4 (end)
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10001001100, 10011001000, 10011000100, 10001100100, 11001001000, // 9
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11001000100, 11000100100, 10110011100, 10011011100, 10011001110, // 14
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10111001100, 10011101100, 10011100110, 11001110010, 11001011100, // 19
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11001001110, 11011100100, 11001110100, 11101101110, 11101001100, // 24
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11100101100, 11100100110, 11101100100, 11100110100, 11100110010, // 29
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11011011000, 11011000110, 11000110110, 10100011000, 10001011000, // 34
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10001000110, 10110001000, 10001101000, 10001100010, 11010001000, // 39
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11000101000, 11000100010, 10110111000, 10110001110, 10001101110, // 44
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10111011000, 10111000110, 10001110110, 11101110110, 11010001110, // 49
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11000101110, 11011101000, 11011100010, 11011101110, 11101011000, // 54
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11101000110, 11100010110, 11101101000, 11101100010, 11100011010, // 59
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11101111010, 11001000010, 11110001010, 10100110000, 10100001100, // 64
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10010110000, 10010000110, 10000101100, 10000100110, 10110010000, // 69
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10110000100, 10011010000, 10011000010, 10000110100, 10000110010, // 74
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11000010010, 11001010000, 11110111010, 11000010100, 10001111010, // 79
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10100111100, 10010111100, 10010011110, 10111100100, 10011110100, // 84
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10011110010, 11110100100, 11110010100, 11110010010, 11011011110, // 89
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11011110110, 11110110110, 10101111000, 10100011110, 10001011110, // 94
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10111101000, 10111100010, 11110101000, 11110100010, 10111011110, // 99
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10111101110, 11101011110, 11110101110, 11010000100, 11010010000, // 104
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11010011100, 1100011101011 // 106 (last char, also one bit longer)
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);
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/*
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* This map takes the charset from subtype A and PHP will index the array
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* natively to the matching code from the barMap.
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* @var static array
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*/
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private static $mapA = array(
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' ', '!', '"', '#', '$', '%', '&', "'", '(', ')', // 9 (end)
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'*', '+', ',', '-', '.', '/', '0', '1', '2', '3', // 19
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'4', '5', '6', '7', '8', '9', ':', ';', '<', '=', // 29
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'>', '?', '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', // 39
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'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', // 49
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'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', // 59
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'\\', ']', '^', '_', // 63 (We're going into the weird bytes next)
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// Hex is a little more concise in this context
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"\x00", "\x01", "\x02", "\x03", "\x04", "\x05", // 69
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"\x06", "\x07", "\x08", "\x09", "\x0A", "\x0B", // 75
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"\x0C", "\x0D", "\x0E", "\x0F", "\x10", "\x11", // 81
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"\x12", "\x13", "\x14", "\x15", "\x16", "\x17", // 87
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"\x18", "\x19", "\x1A", "\x1B", "\x1C", "\x1D", // 93
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"\x1E", "\x1F", // 95
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// Now for system codes
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'FNC_3', 'FNC_2', 'SHIFT_B', 'CODE_C', 'CODE_B', // 100
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'FNC_4', 'FNC_1', 'START_A', 'START_B', 'START_C', // 105
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'STOP', // 106
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);
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/*
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* Same idea from MapA applied here to B.
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* @var static array
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*/
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private static $mapB = array(
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' ', '!', '"', '#', '$', '%', '&', "'", '(', ')', // 9 (end)
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'*', '+', ',', '-', '.', '/', '0', '1', '2', '3', // 19
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'4', '5', '6', '7', '8', '9', ':', ';', '<', '=', // 29
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'>', '?', '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', // 39
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'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', // 49
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'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', // 59
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'\\', ']', '^', '_', '`', 'a', 'b', 'c', 'd', 'e', // 69
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'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', // 79
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'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', // 89
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'z', '{', '|', '}', '~', "\x7F", // 95
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// Now for system codes
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'FNC_3', 'FNC_2', 'SHIFT_A', 'CODE_C', 'FNC_4', // 100
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'CODE_A', 'FNC_1', 'START_A', 'START_B', 'START_C', // 105
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'STOP', // 106
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);
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/*
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* Map C works a little different. The index is the value when the mapping
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* occors.
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* @var static array
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*/
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private static $mapC = array(
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100 =>
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'CODE_B', 'CODE_A', 'FNC_1', 'START_A', 'START_B',
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'START_C', 'STOP', // 106
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);
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/*
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* Subtypes
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*/
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const TYPE_AUTO = 0; // Automatically detect the best code
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const TYPE_A = 1; // ASCII 00-95 (0-9, A-Z, Control codes, and some special chars)
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const TYPE_B = 2; // ASCII 32-127 (0-9, A-Z, a-z, special chars)
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const TYPE_C = 3; // Numbers 00-99 (two digits per code)
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/*
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* Set the data
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*
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* @param mixed data - (int or string) Data to be encoded
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* @return instance of \emberlabs\Barcode\BarcodeInterface
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* @return throws \OverflowException
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*/
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public function setData($data)
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{
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$this->data = $data;
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}
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/*
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* Set the subtype
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* Defaults to Autodetect
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* @param int type - Const flag for the type
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*/
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public function setSubType($type)
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{
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$this->type = ($type < 1 || $type > 3) ? self::TYPE_AUTO : (int) $type;
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}
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/*
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* Get they key (value of the character)
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* @return int - pattern
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*/
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private function getKey($char)
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{
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switch ($this->type)
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{
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case self::TYPE_A:
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return array_search($char, self::$mapA);
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break;
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case self::TYPE_B:
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return array_search($char, self::$mapB);
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break;
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case self::TYPE_C:
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$charInt = (int) $char;
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if (strlen($char) == 2 && $charInt <= 99 && $charInt >= 0)
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{
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return $charInt;
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}
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return array_search($char, self::$mapC);
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break;
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default:
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$this->resolveSubtype();
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return $this->getKey($char); // recursion!
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break;
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}
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}
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/*
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* Get the bar
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* @return int - pattern
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*/
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private function getBar($char)
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{
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$key = $this->getKey($char);
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return self::$barMap[($key !== false) ? $key : 0];
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}
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/*
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* Resolve subtype
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* @todo - Do some better charset checking and enforcement
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* @return void
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*/
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private function resolveSubtype()
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{
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if ($this->type == self::TYPE_AUTO)
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{
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// If it is purely numeric, this is easy
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if (is_numeric($this->data))
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{
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$this->type = self::TYPE_C;
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}
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// Are there only capitals?
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elseif(strtoupper($this->data) == $this->data)
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{
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$this->type = self::TYPE_A;
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}
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else
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{
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$this->type = self::TYPE_B;
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}
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}
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}
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/*
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* Get the name of a start char fr te current subtype
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* @return string
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*/
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private function getStartChar()
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{
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$this->resolveSubtype();
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switch($this->type)
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{
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case self::TYPE_A: return 'START_A'; break;
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case self::TYPE_B: return 'START_B'; break;
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case self::TYPE_C: return 'START_C'; break;
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}
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}
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/*
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* Draw the image
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*
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* @return void
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*/
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public function draw()
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{
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$this->resolveSubtype();
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$charAry = str_split($this->data);
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// Calc scaling
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// Bars is in reference to a single, 1-level bar
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$numBarsRequired = ($this->type != self::TYPE_C) ? (sizeof($charAry) * 11) + 35 : ((sizeof($charAry)/2) * 11) + 35;
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$this->x = ($this->x == 0) ? $numBarsRequired : $this->x;
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$pxPerBar = (int) ($this->x / $numBarsRequired);
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$currentX = ($this->x - ($numBarsRequired * $pxPerBar)) / 2;
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if ($pxPerBar < 1)
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{
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throw new \LogicException("Not enough space on this barcode for this message, increase the width of the barcode");
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}
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if ($this->type == self::TYPE_C)
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{
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if (sizeof($charAry) % 2)
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{
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array_unshift($charAry, '0');
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}
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$pairs = '';
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$newAry = array();
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foreach($charAry as $k => $char)
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{
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if (($k % 2) == 0 && $k != 0)
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{
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$newAry[] = $pairs;
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$pairs = '';
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}
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$pairs .= $char;
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}
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$newAry[] = $pairs;
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$charAry = $newAry;
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}
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// Add the start
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array_unshift($charAry, $this->getStartChar());
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// Checksum collector
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$checkSumCollector = $this->getKey($this->getStartChar());
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$this->img = @imagecreate($this->x, $this->y);
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if (!$this->img)
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{
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throw new \RuntimeException("Code128: Image failed to initialize");
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}
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$white = imagecolorallocate($this->img, 255, 255, 255);
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$black = imagecolorallocate($this->img, 0, 0, 0);
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// Print the code
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foreach($charAry as $k => $char)
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{
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$code = $this->getBar($char);
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$checkSumCollector += $this->getKey($char) * $k; // $k will be 0 for our first
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foreach(str_split((string) $code) as $bit)
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{
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imagefilledrectangle($this->img, $currentX, 0, ($currentX + $pxPerBar), ($this->y - 1), (($bit == '1') ? $black : $white));
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$currentX += $pxPerBar;
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}
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}
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$ending[] = self::$barMap[$checkSumCollector % 103];
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$ending[] = self::$barMap[106]; // STOP.
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foreach($ending as $code)
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{
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foreach(str_split((string) $code) as $bit)
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{
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imagefilledrectangle($this->img, $currentX, 0, ($currentX + $pxPerBar), ($this->y - 1), (($bit == '1') ? $black : $white));
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$currentX += $pxPerBar;
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}
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}
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}
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}
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?>
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