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moodle/lib/tcpdf/barcode/c128cobject.php

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<?php
//============================================================+
// File name : c128cobject.php
// Begin : 2002-07-31
// Last Update : 2004-12-29
// Author : Karim Mribti [barcode@mribti.com]
// : Sam Michaels [swampgas@swampgas.org]
// : 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 128-C Barcode Render Class for PHP using
// the GD graphics library.
// Code 128-C is numeric only and provides the
// most efficiency.
//
// NOTE:
// This version contains changes by Nicola Asuni:
// - porting to PHP4
// - code style and formatting
// - automatic php documentation in PhpDocumentor Style
// (www.phpdoc.org)
// - minor bug fixing
//============================================================+
/**
* Code 128-C Barcode Render Class for PHP using the GD graphics library.<br>
* Code 128-C is numeric only and provides the most efficiency.
* @author Karim Mribti, Nicola Asuni
* @name BarcodeObject
* @package 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 128-C Barcode Render Class for PHP using the GD graphics library.<br>
* Code 128-C is numeric only and provides the most efficiency.
* @author Karim Mribti, Nicola Asuni
* @name BarcodeObject
* @package 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 C128CObject 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 $Value value to print on barcode.
*/
function C128CObject($Width, $Height, $Style, $Value) {
$this->BarcodeObject($Width, $Height, $Style);
$this->mValue = $Value;
$this->mChars = array (
"00", "01", "02", "03", "04", "05", "06", "07", "08", "09",
"10", "11", "12", "13", "14", "15", "16", "17", "18", "19",
"20", "21", "22", "23", "24", "25", "26", "27", "28", "29",
"30", "31", "32", "33", "34", "35", "36", "37", "38", "39",
"40", "41", "42", "43", "44", "45", "46", "47", "48", "49",
"50", "51", "52", "53", "54", "55", "56", "57", "58", "59",
"60", "61", "62", "63", "64", "65", "66", "67", "68", "69",
"70", "71", "72", "73", "74", "75", "76", "77", "78", "79",
"80", "81", "82", "83", "84", "85", "86", "87", "88", "89",
"90", "91", "92", "93", "94", "95", "96", "97", "98", "99",
);
$this->mCharSet = array (
"212222", /* 00 */
"222122", /* 01 */
"222221", /* 02 */
"121223", /* 03 */
"121322", /* 04 */
"131222", /* 05 */
"122213", /* 06 */
"122312", /* 07 */
"132212", /* 08 */
"221213", /* 09 */
"221312", /* 10 */
"231212", /* 11 */
"112232", /* 12 */
"122132", /* 13 */
"122231", /* 14 */
"113222", /* 15 */
"123122", /* 16 */
"123221", /* 17 */
"223211", /* 18 */
"221132", /* 19 */
"221231", /* 20 */
"213212", /* 21 */
"223112", /* 22 */
"312131", /* 23 */
"311222", /* 24 */
"321122", /* 25 */
"321221", /* 26 */
"312212", /* 27 */
"322112", /* 28 */
"322211", /* 29 */
"212123", /* 30 */
"212321", /* 31 */
"232121", /* 32 */
"111323", /* 33 */
"131123", /* 34 */
"131321", /* 35 */
"112313", /* 36 */
"132113", /* 37 */
"132311", /* 38 */
"211313", /* 39 */
"231113", /* 40 */
"231311", /* 41 */
"112133", /* 42 */
"112331", /* 43 */
"132131", /* 44 */
"113123", /* 45 */
"113321", /* 46 */
"133121", /* 47 */
"313121", /* 48 */
"211331", /* 49 */
"231131", /* 50 */
"213113", /* 51 */
"213311", /* 52 */
"213131", /* 53 */
"311123", /* 54 */
"311321", /* 55 */
"331121", /* 56 */
"312113", /* 57 */
"312311", /* 58 */
"332111", /* 59 */
"314111", /* 60 */
"221411", /* 61 */
"431111", /* 62 */
"111224", /* 63 */
"111422", /* 64 */
"121124", /* 65 */
"121421", /* 66 */
"141122", /* 67 */
"141221", /* 68 */
"112214", /* 69 */
"112412", /* 70 */
"122114", /* 71 */
"122411", /* 72 */
"142112", /* 73 */
"142211", /* 74 */
"241211", /* 75 */
"221114", /* 76 */
"413111", /* 77 */
"241112", /* 78 */
"134111", /* 79 */
"111242", /* 80 */
"121142", /* 81 */
"121241", /* 82 */
"114212", /* 83 */
"124112", /* 84 */
"124211", /* 85 */
"411212", /* 86 */
"421112", /* 87 */
"421211", /* 88 */
"212141", /* 89 */
"214121", /* 90 */
"412121", /* 91 */
"111143", /* 92 */
"111341", /* 93 */
"131141", /* 94 */
"114113", /* 95 */
"114311", /* 96 */
"411113", /* 97 */
"411311", /* 98 */
"113141", /* 99 */
);
}
/**
* Returns the character index.
* @param char $char character.
* @return int character index or -1 in case of error.
* @access private
*/
function GetCharIndex($char) {
for ($i=0;$i<100;$i++) {
if ($this->mChars[$i] == $char) {
return $i;
}
}
return -1;
}
/**
* Returns the bar size.
* @param int $xres Horizontal resolution.
* @param char $char Character.
* @return int barcode size.
* @access private
*/
function GetBarSize($xres, $char) {
switch ($char) {
case '1': {
$cVal = BCD_C128_BAR_1;
break;
}
case '2': {
$cVal = BCD_C128_BAR_2;
break;
}
case '3': {
$cVal = BCD_C128_BAR_3;
break;
}
case '4': {
$cVal = BCD_C128_BAR_4;
break;
}
default: {
$cVal = 0;
}
}
return $cVal * $xres;
}
/**
* Returns barcode size.
* @param int $xres Horizontal resolution.
* @return barcode size.
* @access private
*/
function GetSize($xres) {
$len = strlen($this->mValue);
if ($len == 0) {
$this->mError = "Null value";
return false;
}
$ret = 0;
for ($i=0;$i<$len;$i++) {
if ((ord($this->mValue[$i])<48) || (ord($this->mValue[$i])>57)) {
$this->mError = "Code-128C is numeric only";
return false;
}
}
if (($len%2) != 0) {
$this->mError = "The length of barcode value must be even. You must pad the number with zeros.";
return false;
}
for ($i=0;$i<$len;$i+=2) {
$id = $this->GetCharIndex($this->mValue[$i].$this->mValue[$i+1]);
$cset = $this->mCharSet[$id];
$ret += $this->GetBarSize($xres, $cset[0]);
$ret += $this->GetBarSize($xres, $cset[1]);
$ret += $this->GetBarSize($xres, $cset[2]);
$ret += $this->GetBarSize($xres, $cset[3]);
$ret += $this->GetBarSize($xres, $cset[4]);
$ret += $this->GetBarSize($xres, $cset[5]);
}
/* length of Check character */
$cset = $this->GetCheckCharValue();
$CheckSize = 0;
for ($i=0;$i<6;$i++) {
$CheckSize += $this->GetBarSize($cset[$i], $xres);
}
$StartSize = 2*BCD_C128_BAR_2*$xres + 3*BCD_C128_BAR_1*$xres + BCD_C128_BAR_4*$xres;
$StopSize = 2*BCD_C128_BAR_2*$xres + 3*BCD_C128_BAR_1*$xres + 2*BCD_C128_BAR_3*$xres;
return $StartSize + $ret + $CheckSize + $StopSize;
}
/**
* Returns the check-char value.
* @return string.
* @access private
*/
function GetCheckCharValue() {
$len = strlen($this->mValue);
$sum = 105; // 'C' type;
$m = 0;
for ($i=0;$i<$len;$i+=2) {
$m++;
$sum += $this->GetCharIndex($this->mValue[$i].$this->mValue[$i+1]) * $m;
}
$check = $sum % 103;
return $this->mCharSet[$check];
}
/**
* Draws the start code.
* @param int $DrawPos Drawing position.
* @param int $yPos Vertical position.
* @param int $ySize Vertical size.
* @param int $xres Horizontal resolution.
* @return int drawing position.
* @access private
*/
function DrawStart($DrawPos, $yPos, $ySize, $xres) {
/* Start code is '211232' */
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, $this->GetBarSize('2', $xres) , $ySize);
$DrawPos += $this->GetBarSize('2', $xres);
$DrawPos += $this->GetBarSize('1', $xres);
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, $this->GetBarSize('1', $xres) , $ySize);
$DrawPos += $this->GetBarSize('1', $xres);
$DrawPos += $this->GetBarSize('2', $xres);
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, $this->GetBarSize('3', $xres) , $ySize);
$DrawPos += $this->GetBarSize('3', $xres);
$DrawPos += $this->GetBarSize('2', $xres);
return $DrawPos;
}
/**
* Draws the stop code.
* @param int $DrawPos Drawing position.
* @param int $yPos Vertical position.
* @param int $ySize Vertical size.
* @param int $xres Horizontal resolution.
* @return int drawing position.
* @access private
*/
function DrawStop($DrawPos, $yPos, $ySize, $xres) {
/* Stop code is '2331112' */
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, $this->GetBarSize('2', $xres) , $ySize);
$DrawPos += $this->GetBarSize('2', $xres);
$DrawPos += $this->GetBarSize('3', $xres);
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, $this->GetBarSize('3', $xres) , $ySize);
$DrawPos += $this->GetBarSize('3', $xres);
$DrawPos += $this->GetBarSize('1', $xres);
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, $this->GetBarSize('1', $xres) , $ySize);
$DrawPos += $this->GetBarSize('1', $xres);
$DrawPos += $this->GetBarSize('1', $xres);
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, $this->GetBarSize('2', $xres) , $ySize);
$DrawPos += $this->GetBarSize('2', $xres);
return $DrawPos;
}
/**
* Draws the check-char code.
* @param int $DrawPos Drawing position.
* @param int $yPos Vertical position.
* @param int $ySize Vertical size.
* @param int $xres Horizontal resolution.
* @return int drawing position.
* @access private
*/
function DrawCheckChar($DrawPos, $yPos, $ySize, $xres) {
$cset = $this->GetCheckCharValue();
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, $this->GetBarSize($cset[0], $xres) , $ySize);
$DrawPos += $this->GetBarSize($cset[0], $xres);
$DrawPos += $this->GetBarSize($cset[1], $xres);
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, $this->GetBarSize($cset[2], $xres) , $ySize);
$DrawPos += $this->GetBarSize($cset[2], $xres);
$DrawPos += $this->GetBarSize($cset[3], $xres);
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, $this->GetBarSize($cset[4], $xres) , $ySize);
$DrawPos += $this->GetBarSize($cset[4], $xres);
$DrawPos += $this->GetBarSize($cset[5], $xres);
return $DrawPos;
}
/**
* Draws the barcode object.
* @param int $xres Horizontal resolution.
* @return bool true in case of success.
*/
function DrawObject($xres) {
$len = strlen($this->mValue);
if (($size = $this->GetSize($xres))==0) {
return false;
}
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, $sPos+(2*BCD_C128_BAR_2*$xres + 3*BCD_C128_BAR_1*$xres + BCD_C128_BAR_4*$xres)+($size/$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-$text_width)/2)+(2*BCD_C128_BAR_2*$xres + 3*BCD_C128_BAR_1*$xres + BCD_C128_BAR_4*$xres),
$ysize + BCD_DEFAULT_MAR_Y1 + BCD_DEFAULT_TEXT_OFFSET, $this->mValue);
}
}
$cPos = 0;
$DrawPos = $this->DrawStart($sPos, BCD_DEFAULT_MAR_Y1 , $ysize, $xres);
do {
$c = $this->GetCharIndex($this->mValue[$cPos].$this->mValue[$cPos+1]);
$cset = $this->mCharSet[$c];
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, $this->GetBarSize($cset[0], $xres) , $ysize);
$DrawPos += $this->GetBarSize($cset[0], $xres);
$DrawPos += $this->GetBarSize($cset[1], $xres);
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, $this->GetBarSize($cset[2], $xres) , $ysize);
$DrawPos += $this->GetBarSize($cset[2], $xres);
$DrawPos += $this->GetBarSize($cset[3], $xres);
$this->DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, $this->GetBarSize($cset[4], $xres) , $ysize);
$DrawPos += $this->GetBarSize($cset[4], $xres);
$DrawPos += $this->GetBarSize($cset[5], $xres);
$cPos += 2;
} while ($cPos<$len);
$DrawPos = $this->DrawCheckChar($DrawPos, BCD_DEFAULT_MAR_Y1 , $ysize, $xres);
$DrawPos = $this->DrawStop($DrawPos, BCD_DEFAULT_MAR_Y1 , $ysize, $xres);
return true;
}
}
//============================================================+
// END OF FILE
//============================================================+
?>
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