File Source for BarcodeObject

<?php
//============================================================+
// File name : c39object.php
// Begin : 2002-07-31
// Last Update : 2004-12-29
// Author : Karim Mribti [barcode@mribti.com]
// : Nicola Asuni [info@tecnick.com]
// Version : 0.0.8a 2001-04-01 (original code)
// License : GNU LGPL (Lesser General Public License) 2.1
// http://www.gnu.org/copyleft/lesser.txt
// Source Code : http://www.mribti.com/barcode/
//
// Description : Code 39 Barcode Render Class for PHP using
// the GD graphics library.
// Code 39 is an alphanumeric bar code that can
// encode decimal number, case alphabet and some
// special symbols.
//
// NOTE:
// This version contains changes by Nicola Asuni:
// - porting to PHP5
// - code style and formatting
// - automatic php documentation in PhpDocumentor Style
// (www.phpdoc.org)
// - minor bug fixing
//============================================================+
/**
* Code 39 Barcode Render Class.<br>
* Code 39 is an alphanumeric bar code that can encode decimal number, case alphabet and some special symbols.
* @author Karim Mribti, Nicola Asuni
* @name BarcodeObject
* @package linea21.externals
* @subpackage com.tecnick.tcpdf
* @version 0.0.8a 2001-04-01 (original code)
* @since 2001-03-25
* @license http://www.gnu.org/copyleft/lesser.html LGPL
*/
/**
* Code 39 Barcode Render Class.<br>
* Code 39 is an alphanumeric bar code that can encode decimal number, case alphabet and some special symbols.
* @author Karim Mribti, Nicola Asuni
* @name BarcodeObject
* @package linea21.externals
* @subpackage com.tecnick.tcpdf
* @version 0.0.8a 2001-04-01 (original code)
* @since 2001-03-25
* @license http://www.gnu.org/copyleft/lesser.html LGPL
*/
class C39Object extends BarcodeObject {
/**
* Class Constructor.
* @param int $Width Image width in pixels.
* @param int $Height Image height in pixels.
* @param int $Style Barcode style.
* @param int $Value value to print on barcode.
*/
public function __construct($Width, $Height, $Style, $Value) {
parent::__construct($Width, $Height, $Style);
$this->mValue = $Value;
$this->mChars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. *$/+%";
$this->mCharSet = array (
/* 0 */ "000110100",
/* 1 */ "100100001",
/* 2 */ "001100001",
/* 3 */ "101100000",
/* 4 */ "000110001",
/* 5 */ "100110000",
/* 6 */ "001110000",
/* 7 */ "000100101",
/* 8 */ "100100100",
/* 9 */ "001100100",
/* A */ "100001001",
/* B */ "001001001",
/* C */ "101001000",
/* D */ "000011001",
/* E */ "100011000",
/* F */ "001011000",
/* G */ "000001101",
/* H */ "100001100",
/* I */ "001001100",
/* J */ "000011100",
/* K */ "100000011",
/* L */ "001000011",
/* M */ "101000010",
/* N */ "000010011",
/* O */ "100010010",
/* P */ "001010010",
/* Q */ "000000111",
/* R */ "100000110",
/* S */ "001000110",
/* T */ "000010110",
/* U */ "110000001",
/* V */ "011000001",
/* W */ "111000000",
/* X */ "010010001",
/* Y */ "110010000",
/* Z */ "011010000",
/* - */ "010000101",
/* . */ "110000100",
/* SP */ "011000100",
/* * */ "010010100",
/* $ */ "010101000",
/* / */ "010100010",
/* + */ "010001010",
/* % */ "000101010"
);
}
/**
* Returns the character index.
* @param char $char character.
* @return int character index or -1 in case of error.
* @access private
*/
private function GetCharIndex($char) {
for ($i=0;$i<44;$i++) {
if ($this->mChars[$i] == $char) {
return $i;
}
}
return -1;
}
/**
* Returns barcode size.
* @param int $xres Horizontal resolution.
* @return barcode size.
* @access private
*/
private function GetSize($xres) {
$len = strlen($this->mValue);
if ($len == 0) {
$this->mError = "Null value";
return false;
}
for ($i=0;$i<$len;$i++) {
if ($this->GetCharIndex($this->mValue[$i]) == -1 || $this->mValue[$i] == '*') {
/* The asterisk is only used as a start and stop code */
$this->mError = "C39 not include the char '".$this->mValue[$i]."'";
return false;
}
}
/* Start, Stop is 010010100 == '*' */
$StartSize = BCD_C39_NARROW_BAR * $xres * 6 + BCD_C39_WIDE_BAR * $xres * 3;
$StopSize = BCD_C39_NARROW_BAR * $xres * 6 + BCD_C39_WIDE_BAR * $xres * 3;
$CharSize = BCD_C39_NARROW_BAR * $xres * 6 + BCD_C39_WIDE_BAR * $xres * 3; /* Same for all chars */
return $CharSize * $len + $StartSize + $StopSize + /* Space between chars */ BCD_C39_NARROW_BAR * $xres * ($len-1);
}
/**
* Draws the start code.
* @param int $DrawPos Drawing position.
* @param int $yPos Vertical position.
* @param int $ySize Vertical size.
* @param int $xres Horizontal resolution.
* @return int drawing position.
* @access private
*/
private function DrawStart($DrawPos, $yPos, $ySize, $xres) {
/* Start code is '*' */
$narrow = BCD_C39_NARROW_BAR * $xres;
$wide = BCD_C39_WIDE_BAR * $xres;
$this->DrawSingleBar($DrawPos, $yPos, $narrow , $ySize);
$DrawPos += $narrow;
$DrawPos += $wide;
$this->DrawSingleBar($DrawPos, $yPos, $narrow , $ySize);
$DrawPos += $narrow;
$DrawPos += $narrow;
$this->DrawSingleBar($DrawPos, $yPos, $wide , $ySize);
$DrawPos += $wide;
$DrawPos += $narrow;
$this->DrawSingleBar($DrawPos, $yPos, $wide , $ySize);
$DrawPos += $wide;
$DrawPos += $narrow;
$this->DrawSingleBar($DrawPos, $yPos, $narrow, $ySize);
$DrawPos += $narrow;
$DrawPos += $narrow; /* Space between chars */
return $DrawPos;
}
/**
* Draws the stop code.
* @param int $DrawPos Drawing position.
* @param int $yPos Vertical position.
* @param int $ySize Vertical size.
* @param int $xres Horizontal resolution.
* @return int drawing position.
* @access private
*/
private function DrawStop($DrawPos, $yPos, $ySize, $xres) {
/* Stop code is '*' */
$narrow = BCD_C39_NARROW_BAR * $xres;
$wide = BCD_C39_WIDE_BAR * $xres;
$this->DrawSingleBar($DrawPos, $yPos, $narrow , $ySize);
$DrawPos += $narrow;
$DrawPos += $wide;
$this->DrawSingleBar($DrawPos, $yPos, $narrow , $ySize);
$DrawPos += $narrow;
$DrawPos += $narrow;
$this->DrawSingleBar($DrawPos, $yPos, $wide , $ySize);
$DrawPos += $wide;
$DrawPos += $narrow;
$this->DrawSingleBar($DrawPos, $yPos, $wide , $ySize);
$DrawPos += $wide;
$DrawPos += $narrow;
$this->DrawSingleBar($DrawPos, $yPos, $narrow, $ySize);
$DrawPos += $narrow;
return $DrawPos;
}
/**
* Draws the barcode object.
* @param int $xres Horizontal resolution.
* @return bool true in case of success.
*/
public function DrawObject($xres) {
$len = strlen($this->mValue);
$narrow = BCD_C39_NARROW_BAR * $xres;
$wide = BCD_C39_WIDE_BAR * $xres;
if (($size = $this->GetSize($xres))==0) {
return false;
}
$cPos = 0;
if ($this->mStyle & BCS_ALIGN_CENTER) $sPos = (integer)(($this->mWidth - $size ) / 2);
else if ($this->mStyle & BCS_ALIGN_RIGHT) $sPos = $this->mWidth - $size;
else $sPos = 0;
/* Total height of bar code -Bars only- */
if ($this->mStyle & BCS_DRAW_TEXT) $ysize = $this->mHeight - BCD_DEFAULT_MAR_Y1 - BCD_DEFAULT_MAR_Y2 - $this->GetFontHeight($this->mFont);
else $ysize = $this->mHeight - BCD_DEFAULT_MAR_Y1 - BCD_DEFAULT_MAR_Y2;
/* Draw text */
if ($this->mStyle & BCS_DRAW_TEXT) {
if ($this->mStyle & BCS_STRETCH_TEXT) {
for ($i=0;$i<$len;$i++) {
$this->DrawChar($this->mFont, $sPos+($narrow*6+$wide*3)+($size/$len)*$i,
$ysize + BCD_DEFAULT_MAR_Y1 + BCD_DEFAULT_TEXT_OFFSET, $this->mValue[$i]);
}
} else {/* Center */
$text_width = $this->GetFontWidth($this->mFont) * strlen($this->mValue);
$this->DrawText($this->mFont, $sPos+(($size-$text_width)/2)+($narrow*6+$wide*3),
$ysize + BCD_DEFAULT_MAR_Y1 + BCD_DEFAULT_TEXT_OFFSET, $this->mValue);
}
}
$DrawPos = $this->DrawStart($sPos, BCD_DEFAULT_MAR_Y1 , $ysize, $xres);
do {
$c = $this->GetCharIndex($this->mValue[$cPos]);
$cset = $this->mCharSet[$c];
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, ($cset[0] == '0') ? $narrow : $wide , $ysize);
$DrawPos += ($cset[0] == '0') ? $narrow : $wide;
$DrawPos += ($cset[1] == '0') ? $narrow : $wide;
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, ($cset[2] == '0') ? $narrow : $wide , $ysize);
$DrawPos += ($cset[2] == '0') ? $narrow : $wide;
$DrawPos += ($cset[3] == '0') ? $narrow : $wide;
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, ($cset[4] == '0') ? $narrow : $wide , $ysize);
$DrawPos += ($cset[4] == '0') ? $narrow : $wide;
$DrawPos += ($cset[5] == '0') ? $narrow : $wide;
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, ($cset[6] == '0') ? $narrow : $wide , $ysize);
$DrawPos += ($cset[6] == '0') ? $narrow : $wide;
$DrawPos += ($cset[7] == '0') ? $narrow : $wide;
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, ($cset[8] == '0') ? $narrow : $wide , $ysize);
$DrawPos += ($cset[8] == '0') ? $narrow : $wide;
$DrawPos += $narrow; /* Space between chars */
$cPos++;
} while ($cPos<$len);
$DrawPos = $this->DrawStop($DrawPos, BCD_DEFAULT_MAR_Y1 , $ysize, $xres);
return true;
}
}
//============================================================+
// END OF FILE
//============================================================+
?>

Source for file BarcodeObject