123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244 |
- <?php
-
- include_once('BCGParseException.php');
- include_once('BCGBarcode.php');
- include_once('BCGBarcode1D.php');
- include_once('BCGLabel.php');
-
- class BCGean8 extends BCGBarcode1D {
- protected $labelLeft = null;
- protected $labelRight = null;
-
-
-
- public function __construct() {
- parent::__construct();
-
- $this->keys = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9');
-
-
-
- $this->code = array(
- '2100',
- '1110',
- '1011',
- '0300',
- '0021',
- '0120',
- '0003',
- '0201',
- '0102',
- '2001'
- );
- }
-
-
-
- public function draw($im) {
-
- $this->calculateChecksum();
- $temp_text = $this->text . $this->keys[$this->checksumValue];
-
-
- $this->drawChar($im, '000', true);
-
-
- for ($i = 0; $i < 4; $i++) {
- $this->drawChar($im, $this->findCode($temp_text[$i]), false);
- }
-
-
- $this->drawChar($im, '00000', false);
-
-
- for ($i = 4; $i < 8; $i++) {
- $this->drawChar($im, $this->findCode($temp_text[$i]), true);
- }
-
-
- $this->drawChar($im, '000', true);
- $this->drawText($im, 0, 0, $this->positionX, $this->thickness);
-
- if ($this->isDefaultEanLabelEnabled()) {
- $dimension = $this->labelRight->getDimension();
- $this->drawExtendedBars($im, $dimension[1] - 2);
- }
- }
-
-
-
- public function getDimension($w, $h) {
- $startlength = 3;
- $centerlength = 5;
- $textlength = 8 * 7;
- $endlength = 3;
-
- $w += $startlength + $centerlength + $textlength + $endlength;
- $h += $this->thickness;
- return parent::getDimension($w, $h);
- }
-
-
-
- protected function addDefaultLabel() {
- if ($this->isDefaultEanLabelEnabled()) {
- $this->processChecksum();
- $label = $this->getLabel();
- $font = $this->font;
-
- $this->labelLeft = new BCGLabel(substr($label, 0, 4), $font, BCGLabel::POSITION_BOTTOM, BCGLabel::ALIGN_LEFT);
- $labelLeftDimension = $this->labelLeft->getDimension();
- $this->labelLeft->setOffset(($this->scale * 30 - $labelLeftDimension[0]) / 2 + $this->scale * 2);
-
- $this->labelRight = new BCGLabel(substr($label, 4, 3) . $this->keys[$this->checksumValue], $font, BCGLabel::POSITION_BOTTOM, BCGLabel::ALIGN_LEFT);
- $labelRightDimension = $this->labelRight->getDimension();
- $this->labelRight->setOffset(($this->scale * 30 - $labelRightDimension[0]) / 2 + $this->scale * 34);
-
- $this->addLabel($this->labelLeft);
- $this->addLabel($this->labelRight);
- }
- }
-
-
-
- protected function isDefaultEanLabelEnabled() {
- $label = $this->getLabel();
- $font = $this->font;
- return $label !== null && $label !== '' && $font !== null && $this->defaultLabel !== null;
- }
-
-
-
- protected function validate() {
- $c = strlen($this->text);
- if ($c === 0) {
- throw new BCGParseException('ean8', 'No data has been entered.');
- }
-
-
- for ($i = 0; $i < $c; $i++) {
- if (array_search($this->text[$i], $this->keys) === false) {
- throw new BCGParseException('ean8', 'The character \'' . $this->text[$i] . '\' is not allowed.');
- }
- }
-
-
- if ($c === 8) {
- $this->text = substr($this->text, 0, 7);
- } elseif ($c !== 7) {
- throw new BCGParseException('ean8', 'Must contain 7 digits, the 8th digit is automatically added.');
- }
-
- parent::validate();
- }
-
-
-
- protected function calculateChecksum() {
-
-
-
-
-
-
- $odd = true;
- $this->checksumValue = 0;
- $c = strlen($this->text);
- for ($i = $c; $i > 0; $i--) {
- if ($odd === true) {
- $multiplier = 3;
- $odd = false;
- } else {
- $multiplier = 1;
- $odd = true;
- }
-
- if (!isset($this->keys[$this->text[$i - 1]])) {
- return;
- }
-
- $this->checksumValue += $this->keys[$this->text[$i - 1]] * $multiplier;
- }
-
- $this->checksumValue = (10 - $this->checksumValue % 10) % 10;
- }
-
-
-
- protected function processChecksum() {
- if ($this->checksumValue === false) {
- $this->calculateChecksum();
- }
-
- if ($this->checksumValue !== false) {
- return $this->keys[$this->checksumValue];
- }
-
- return false;
- }
-
-
-
- private function drawExtendedBars($im, $plus) {
- $rememberX = $this->positionX;
- $rememberH = $this->thickness;
-
-
- $this->thickness = $this->thickness + intval($plus / $this->scale);
- $this->positionX = 0;
- $this->drawSingleBar($im, BCGBarcode::COLOR_FG);
- $this->positionX += 2;
- $this->drawSingleBar($im, BCGBarcode::COLOR_FG);
-
-
- $this->positionX += 30;
- $this->drawSingleBar($im, BCGBarcode::COLOR_FG);
- $this->positionX += 2;
- $this->drawSingleBar($im, BCGBarcode::COLOR_FG);
-
-
- $this->positionX += 30;
- $this->drawSingleBar($im, BCGBarcode::COLOR_FG);
- $this->positionX += 2;
- $this->drawSingleBar($im, BCGBarcode::COLOR_FG);
-
- $this->positionX = $rememberX;
- $this->thickness = $rememberH;
- }
- }
- ?>
|