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<?php /** *-------------------------------------------------------------------- * * Sub-Class - PostNet * * A postnet is composed of either 5, 9 or 11 digits used by US postal service. * *-------------------------------------------------------------------- * Copyright (C) Jean-Sebastien Goupil * http://www.barcodephp.com */ include_once('BCGParseException.php'); include_once('BCGBarcode1D.php'); class BCGpostnet extends BCGBarcode1D { /** * Constructor. */ public function __construct() { parent::__construct(); $this->keys = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9'); $this->code = array( '11000', /* 0 */ '00011', /* 1 */ '00101', /* 2 */ '00110', /* 3 */ '01001', /* 4 */ '01010', /* 5 */ '01100', /* 6 */ '10001', /* 7 */ '10010', /* 8 */ '10100' /* 9 */ ); $this->setThickness(9); } /** * Draws the barcode. * * @param resource $im */ public function draw($im) { // Checksum $checksum = 0; $c = strlen($this->text); for ($i = 0; $i < $c; $i++) { $checksum += intval($this->text[$i]); } $checksum = 10 - ($checksum % 10); // Starting Code $this->drawChar($im, '1'); // Code for ($i = 0; $i < $c; $i++) { $this->drawChar($im, $this->findCode($this->text[$i])); } // Checksum $this->drawChar($im, $this->findCode($checksum)); // Ending Code $this->drawChar($im, '1'); $this->drawText($im, 0, 0, $this->positionX, $this->thickness); } /** * Returns the maximal size of a barcode. * * @param int $w * @param int $h * @return int[] */ public function getDimension($w, $h) { $c = strlen($this->text); $startlength = 3; $textlength = $c * 5 * 3; $checksumlength = 5 * 3; $endlength = 3; // We remove the white on the right $removelength = -1.56; $w += $startlength + $textlength + $checksumlength + $endlength + $removelength; $h += $this->thickness; return parent::getDimension($w, $h); } /** * Validates the input. */ protected function validate() { $c = strlen($this->text); if ($c === 0) { throw new BCGParseException('postnet', 'No data has been entered.'); } // Checking if all chars are allowed for ($i = 0; $i < $c; $i++) { if (array_search($this->text[$i], $this->keys) === false) { throw new BCGParseException('postnet', 'The character \'' . $this->text[$i] . '\' is not allowed.'); } } // Must contain 5, 9 or 11 chars if ($c !== 5 && $c !== 9 && $c !== 11) { throw new BCGParseException('postnet', 'Must contain 5, 9, or 11 characters.'); } parent::validate(); } /** * Overloaded method for drawing special barcode. * * @param resource $im * @param string $code * @param boolean $startBar */ protected function drawChar($im, $code, $startBar = true) { $c = strlen($code); for ($i = 0; $i < $c; $i++) { if ($code[$i] === '0') { $posY = $this->thickness - ($this->thickness / 2.5); } else { $posY = 0; } $this->drawFilledRectangle($im, $this->positionX, $posY, $this->positionX + 0.44, $this->thickness - 1, BCGBarcode::COLOR_FG); $this->positionX += 3; } } } ?>