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   1  <?php
   2  //============================================================+
   3  // File name   : i25aobject.php
   4  // Begin       : 2002-07-31
   5  // Last Update : 2004-12-29
   6  // Author      : Karim Mribti [[email protected]]
   7  //             : Nicola Asuni [[email protected]]
   8  // Version     : 0.0.8a  2001-04-01 (original code)
   9  // License     : GNU LGPL (Lesser General Public License) 2.1
  10  //               http://www.gnu.org/copyleft/lesser.txt
  11  // Source Code : http://www.mribti.com/barcode/
  12  //
  13  // Description : I25 Barcode Render Class for PHP using
  14  //               the GD graphics library.
  15  //               Interleaved 2 of 5 is a numeric only bar code
  16  //               with a optional check number.
  17  //
  18  // NOTE:
  19  // This version contains changes by Nicola Asuni:
  20  //  - porting to PHP5
  21  //  - code style and formatting
  22  //  - automatic php documentation in PhpDocumentor Style
  23  //    (www.phpdoc.org)
  24  //  - minor bug fixing
  25  //============================================================+
  26  
  27  /**
  28   * I25 Barcode Render Class for PHP using the GD graphics library.<br<
  29   * Interleaved 2 of 5 is a numeric only bar code with a optional check number.
  30   * @author Karim Mribti, Nicola Asuni
  31   * @name BarcodeObject
  32   * @package com.tecnick.tcpdf
  33   * @version 0.0.8a  2001-04-01 (original code)
  34   * @since 2001-03-25
  35   * @license http://www.gnu.org/copyleft/lesser.html LGPL
  36   */
  37  
  38  /**
  39   * I25 Barcode Render Class for PHP using the GD graphics library.<br<
  40   * Interleaved 2 of 5 is a numeric only bar code with a optional check number.
  41   * @author Karim Mribti, Nicola Asuni
  42   * @name BarcodeObject
  43   * @package com.tecnick.tcpdf
  44   * @version 0.0.8a  2001-04-01 (original code)
  45   * @since 2001-03-25
  46   * @license http://www.gnu.org/copyleft/lesser.html LGPL
  47   */
  48  class I25Object extends BarcodeObject {
  49      
  50      /**
  51       * Class Constructor.
  52       * @param int $Width Image width in pixels.
  53       * @param int $Height Image height in pixels. 
  54       * @param int $Style Barcode style.
  55       * @param int $Value value to print on barcode.
  56       */
  57  	public function __construct($Width, $Height, $Style, $Value) {
  58          parent::__construct($Width, $Height, $Style);
  59          $this->mValue = $Value;
  60          $this->mCharSet = array (
  61          /* 0 */ "00110",
  62          /* 1 */ "10001",
  63          /* 2 */ "01001",
  64          /* 3 */ "11000",
  65          /* 4 */ "00101",
  66          /* 5 */ "10100",
  67          /* 6 */ "01100",
  68          /* 7 */ "00011",
  69          /* 8 */ "10010",
  70          /* 9 */ "01010"
  71          );
  72      }
  73      
  74      /**
  75       * Returns barcode size.
  76       * @param int $xres Horizontal resolution.
  77       * @return barcode size.
  78       * @access private
  79       */
  80  	private function GetSize($xres) {
  81          $len = strlen($this->mValue);
  82  
  83          if ($len == 0)  {
  84              $this->mError = "Null value";
  85              return false;
  86          }
  87  
  88          for ($i=0;$i<$len;$i++) {
  89              if ((ord($this->mValue[$i])<48) || (ord($this->mValue[$i])>57)) {
  90                  $this->mError = "I25 is numeric only";
  91                  return false;
  92              }
  93          }
  94  
  95          if (($len%2) != 0) {
  96              $this->mError = "The length of barcode value must be even";
  97              return false;
  98          }
  99          $StartSize = BCD_I25_NARROW_BAR * 4  * $xres;
 100          $StopSize  = BCD_I25_WIDE_BAR * $xres + 2 * BCD_I25_NARROW_BAR * $xres;
 101          $cPos = 0;
 102          $sPos = 0;
 103          do {
 104              $c1    = $this->mValue[$cPos];
 105              $c2    = $this->mValue[$cPos+1];
 106              $cset1 = $this->mCharSet[$c1];
 107              $cset2 = $this->mCharSet[$c2];
 108  
 109              for ($i=0;$i<5;$i++) {
 110                  $type1 = ($cset1[$i]==0) ? (BCD_I25_NARROW_BAR  * $xres) : (BCD_I25_WIDE_BAR * $xres);
 111                  $type2 = ($cset2[$i]==0) ? (BCD_I25_NARROW_BAR  * $xres) : (BCD_I25_WIDE_BAR * $xres);
 112                  $sPos += ($type1 + $type2);
 113              }
 114              $cPos+=2;
 115          } while ($cPos<$len);
 116  
 117          return $sPos + $StartSize + $StopSize;
 118      }
 119  
 120      /**
 121       * Draws the start code.
 122       * @param int $DrawPos Drawing position.
 123       * @param int $yPos Vertical position.
 124       * @param int $ySize Vertical size.
 125       * @param int $xres Horizontal resolution.
 126       * @return int drawing position.
 127       * @access private
 128       */
 129  	private function DrawStart($DrawPos, $yPos, $ySize, $xres) {
 130          /* Start code is "0000" */
 131          $this->DrawSingleBar($DrawPos, $yPos, BCD_I25_NARROW_BAR  * $xres , $ySize);
 132          $DrawPos += BCD_I25_NARROW_BAR  * $xres;
 133          $DrawPos += BCD_I25_NARROW_BAR  * $xres;
 134          $this->DrawSingleBar($DrawPos, $yPos, BCD_I25_NARROW_BAR  * $xres , $ySize);
 135          $DrawPos += BCD_I25_NARROW_BAR  * $xres;
 136          $DrawPos += BCD_I25_NARROW_BAR  * $xres;
 137          return $DrawPos;
 138      }
 139      
 140      /**
 141       * Draws the stop code.
 142       * @param int $DrawPos Drawing position.
 143       * @param int $yPos Vertical position.
 144       * @param int $ySize Vertical size.
 145       * @param int $xres Horizontal resolution.
 146       * @return int drawing position.
 147       * @access private
 148       */
 149  	private function DrawStop($DrawPos, $yPos, $ySize, $xres) {
 150          /* Stop code is "100" */
 151          $this->DrawSingleBar($DrawPos, $yPos, BCD_I25_WIDE_BAR * $xres , $ySize);
 152          $DrawPos += BCD_I25_WIDE_BAR  * $xres;
 153          $DrawPos += BCD_I25_NARROW_BAR  * $xres;
 154          $this->DrawSingleBar($DrawPos, $yPos, BCD_I25_NARROW_BAR  * $xres , $ySize);
 155          $DrawPos += BCD_I25_NARROW_BAR  * $xres;
 156          return $DrawPos;
 157      }
 158  
 159      /**
 160       * Draws the barcode object.
 161       * @param int $xres Horizontal resolution.
 162       * @return bool true in case of success.
 163       */
 164  	public function DrawObject($xres) {
 165          $len = strlen($this->mValue);
 166  
 167          if (($size = $this->GetSize($xres))==0) {
 168              return false;
 169          }
 170  
 171          $cPos  = 0;
 172  
 173          if ($this->mStyle & BCS_DRAW_TEXT) $ysize = $this->mHeight - BCD_DEFAULT_MAR_Y1 - BCD_DEFAULT_MAR_Y2 - $this->GetFontHeight($this->mFont);
 174          else $ysize = $this->mHeight - BCD_DEFAULT_MAR_Y1 - BCD_DEFAULT_MAR_Y2;
 175  
 176          if ($this->mStyle & BCS_ALIGN_CENTER) $sPos = (integer)(($this->mWidth - $size ) / 2);
 177          else if ($this->mStyle & BCS_ALIGN_RIGHT) $sPos = $this->mWidth - $size;
 178          else $sPos = 0;
 179  
 180          if ($this->mStyle & BCS_DRAW_TEXT) {
 181              if ($this->mStyle & BCS_STRETCH_TEXT) {
 182                  /* Stretch */
 183                  for ($i=0;$i<$len;$i++) {
 184                      $this->DrawChar($this->mFont, $sPos+BCD_I25_NARROW_BAR*4*$xres+($size/$len)*$i,
 185                      $ysize + BCD_DEFAULT_MAR_Y1 + BCD_DEFAULT_TEXT_OFFSET , $this->mValue[$i]);
 186                  }
 187              }else {/* Center */
 188              $text_width = $this->GetFontWidth($this->mFont) * strlen($this->mValue);
 189              $this->DrawText($this->mFont, $sPos+(($size-$text_width)/2)+(BCD_I25_NARROW_BAR*4*$xres),
 190              $ysize + BCD_DEFAULT_MAR_Y1 + BCD_DEFAULT_TEXT_OFFSET, $this->mValue);
 191              }
 192          }
 193  
 194          $sPos = $this->DrawStart($sPos, BCD_DEFAULT_MAR_Y1, $ysize, $xres);
 195          do {
 196              $c1 = $this->mValue[$cPos];
 197              $c2 = $this->mValue[$cPos+1];
 198              $cset1 = $this->mCharSet[$c1];
 199              $cset2 = $this->mCharSet[$c2];
 200  
 201              for ($i=0;$i<5;$i++) {
 202                  $type1 = ($cset1[$i]==0) ? (BCD_I25_NARROW_BAR * $xres) : (BCD_I25_WIDE_BAR * $xres);
 203                  $type2 = ($cset2[$i]==0) ? (BCD_I25_NARROW_BAR * $xres) : (BCD_I25_WIDE_BAR * $xres);
 204                  $this->DrawSingleBar($sPos, BCD_DEFAULT_MAR_Y1, $type1 , $ysize);
 205                  $sPos += ($type1 + $type2);
 206              }
 207              $cPos+=2;
 208          } while ($cPos<$len);
 209          $sPos =  $this->DrawStop($sPos, BCD_DEFAULT_MAR_Y1, $ysize, $xres);
 210          return true;
 211      }
 212  }
 213  
 214  //============================================================+
 215  // END OF FILE
 216  //============================================================+
 217  ?>