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Prepare rebase: move files to new folder structure
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jekkos
236
app/Libraries/Barcode_lib.php
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236
app/Libraries/Barcode_lib.php
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<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
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use emberlabs\Barcode\BarcodeBase;
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require APPPATH.'/views/barcodes/BarcodeBase.php';
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require APPPATH.'/views/barcodes/Code39.php';
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require APPPATH.'/views/barcodes/Code128.php';
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require APPPATH.'/views/barcodes/Ean13.php';
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require APPPATH.'/views/barcodes/Ean8.php';
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/**
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* Barcode library
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*
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* Library with utilities to manage barcodes
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*/
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class Barcode_lib
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{
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private $CI;
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private $supported_barcodes = array('Code39' => 'Code 39', 'Code128' => 'Code 128', 'Ean8' => 'EAN 8', 'Ean13' => 'EAN 13');
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public function __construct()
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{
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$this->CI =& get_instance();
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}
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public function get_list_barcodes()
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{
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return $this->supported_barcodes;
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}
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public function get_barcode_config()
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{
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$data['company'] = $this->CI->config->item('company');
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$data['barcode_content'] = $this->CI->config->item('barcode_content');
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$data['barcode_type'] = $this->CI->config->item('barcode_type');
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$data['barcode_font'] = $this->CI->config->item('barcode_font');
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$data['barcode_font_size'] = $this->CI->config->item('barcode_font_size');
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$data['barcode_height'] = $this->CI->config->item('barcode_height');
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$data['barcode_width'] = $this->CI->config->item('barcode_width');
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$data['barcode_first_row'] = $this->CI->config->item('barcode_first_row');
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$data['barcode_second_row'] = $this->CI->config->item('barcode_second_row');
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$data['barcode_third_row'] = $this->CI->config->item('barcode_third_row');
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$data['barcode_num_in_row'] = $this->CI->config->item('barcode_num_in_row');
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$data['barcode_page_width'] = $this->CI->config->item('barcode_page_width');
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$data['barcode_page_cellspacing'] = $this->CI->config->item('barcode_page_cellspacing');
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$data['barcode_generate_if_empty'] = $this->CI->config->item('barcode_generate_if_empty');
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$data['barcode_formats'] = $this->CI->config->item('barcode_formats');
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return $data;
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}
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public function validate_barcode($barcode)
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{
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$barcode_type = $this->CI->config->item('barcode_type');
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$barcode_instance = $this->get_barcode_instance($barcode_type);
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return $barcode_instance->validate($barcode);
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}
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public static function barcode_instance($item, $barcode_config)
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{
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$barcode_instance = Barcode_lib::get_barcode_instance($barcode_config['barcode_type']);
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$is_valid = empty($item['item_number']) && $barcode_config['barcode_generate_if_empty'] || $barcode_instance->validate($item['item_number']);
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// if barcode validation does not succeed,
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if(!$is_valid)
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{
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$barcode_instance = Barcode_lib::get_barcode_instance();
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}
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$seed = Barcode_lib::barcode_seed($item, $barcode_instance, $barcode_config);
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$barcode_instance->setData($seed);
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return $barcode_instance;
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}
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private static function get_barcode_instance($barcode_type='Code128')
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{
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switch($barcode_type)
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{
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case 'Code39':
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return new emberlabs\Barcode\Code39();
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break;
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case 'Code128':
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default:
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return new emberlabs\Barcode\Code128();
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break;
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case 'Ean8':
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return new emberlabs\Barcode\Ean8();
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break;
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case 'Ean13':
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return new emberlabs\Barcode\Ean13();
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break;
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}
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}
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private static function barcode_seed($item, $barcode_instance, $barcode_config)
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{
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$seed = $barcode_config['barcode_content'] !== "id" && !empty($item['item_number']) ? $item['item_number'] : $item['item_id'];
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if($barcode_config['barcode_content'] !== "id" && !empty($item['item_number']))
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{
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$seed = $item['item_number'];
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}
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else
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{
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if($barcode_config['barcode_generate_if_empty'])
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{
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// generate barcode with the correct instance
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$seed = $barcode_instance->generate($seed);
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}
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else
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{
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$seed = $item['item_id'];
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}
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}
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return $seed;
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}
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private function generate_barcode($item, $barcode_config)
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{
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try
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{
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$barcode_instance = Barcode_lib::barcode_instance($item, $barcode_config);
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$barcode_instance->setDimensions($barcode_config['barcode_width'], $barcode_config['barcode_height']);
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$barcode_instance->draw();
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return $barcode_instance->base64();
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}
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catch(Exception $e)
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{
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echo 'Caught exception: ', $e->getMessage(), "\n";
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}
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}
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public function generate_receipt_barcode($barcode_content)
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{
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try
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{
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// Code128 is the default and used in this case for the receipts
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$barcode = $this->get_barcode_instance();
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// set the receipt number to generate the barcode for
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$barcode->setData($barcode_content);
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// width: 300, height: 50
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$barcode->setDimensions(300, 50);
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// draw the image
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$barcode->draw();
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return $barcode->base64();
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}
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catch(Exception $e)
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{
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echo 'Caught exception: ', $e->getMessage(), "\n";
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}
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}
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public function display_barcode($item, $barcode_config)
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{
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$display_table = "<table>";
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$display_table .= "<tr><td align='center'>" . $this->manage_display_layout($barcode_config['barcode_first_row'], $item, $barcode_config) . "</td></tr>";
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$barcode = $this->generate_barcode($item, $barcode_config);
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$display_table .= "<tr><td align='center'><img src='data:image/png;base64,$barcode' /></td></tr>";
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$display_table .= "<tr><td align='center'>" . $this->manage_display_layout($barcode_config['barcode_second_row'], $item, $barcode_config) . "</td></tr>";
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$display_table .= "<tr><td align='center'>" . $this->manage_display_layout($barcode_config['barcode_third_row'], $item, $barcode_config) . "</td></tr>";
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$display_table .= "</table>";
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return $display_table;
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}
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private function manage_display_layout($layout_type, $item, $barcode_config)
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{
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$result = '';
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if($layout_type == 'name')
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{
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$result = $this->CI->lang->line('items_name') . " " . $item['name'];
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}
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elseif($layout_type == 'category' && isset($item['category']))
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{
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$result = $this->CI->lang->line('items_category') . " " . $item['category'];
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}
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elseif($layout_type == 'cost_price' && isset($item['cost_price']))
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{
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$result = $this->CI->lang->line('items_cost_price') . " " . to_currency($item['cost_price']);
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}
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elseif($layout_type == 'unit_price' && isset($item['unit_price']))
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{
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$result = $this->CI->lang->line('items_unit_price') . " " . to_currency($item['unit_price']);
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}
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elseif($layout_type == 'company_name')
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{
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$result = $barcode_config['company'];
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}
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elseif($layout_type == 'item_code')
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{
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$result = $barcode_config['barcode_content'] !== "id" && isset($item['item_number']) ? $item['item_number'] : $item['item_id'];
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}
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return character_limiter($result, 40);
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}
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public function listfonts($folder)
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{
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$array = array();
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if(($handle = opendir($folder)) !== FALSE)
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{
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while(($file = readdir($handle)) !== FALSE)
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{
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if(substr($file, -4, 4) === '.ttf')
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{
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$array[$file] = $file;
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}
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}
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}
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closedir($handle);
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array_unshift($array, $this->CI->lang->line('config_none'));
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return $array;
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}
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public function get_font_name($font_file_name)
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{
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return substr($font_file_name, 0, -4);
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}
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}
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?>
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