<?php
/*
Barcode Render Class for PHP using the GD graphics library
Copyright (C) 2001  Karim Mribti

   Version  0.0.7a  2001-04-01

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

Copy of GNU Lesser General Public License at: http://www.gnu.org/copyleft/lesser.txt

Source code home page: http://www.mribti.com/barcode/
Contact author at: barcode@mribti.com
*/

if ( ! defined("BARCODE_CLASS")) {
define("BARCODE_CLASS", 1);

/***************************** base class ********************************************/
/** NB: all GD call's is here **/

/* Styles */

/* Global */
define("BCS_BORDER"	    	,    1);
define("BCS_TRANSPARENT"    ,    2);
define("BCS_ALIGN_CENTER"   ,    4);
define("BCS_ALIGN_LEFT"     ,    8);
define("BCS_ALIGN_RIGHT"    ,   16);
define("BCS_IMAGE_JPEG"     ,   32);
define("BCS_IMAGE_PNG"      ,   64);
define("BCS_DRAW_TEXT"      ,    0);   //modif cerovetti mettre 0 pour invalider impression du texte du code, 128 pour valider
define("BCS_STRETCH_TEXT"   ,  256);
define("BCS_REVERSE_COLOR"  ,  512);
/* For the I25 Only  */
define("BCS_I25_DRAW_CHECK" , 2048);

/* Default values */

/* Global */
define("BCD_DEFAULT_BACKGROUND_COLOR", 0xFFFFFF);
define("BCD_DEFAULT_FOREGROUND_COLOR", 0x000000);
define("BCD_DEFAULT_STYLE"           , BCS_BORDER | BCS_ALIGN_CENTER | BCS_IMAGE_PNG);
define("BCD_DEFAULT_WIDTH"           , 460);
define("BCD_DEFAULT_HEIGHT"          , 120);
define("BCD_DEFAULT_FONT"            ,   5);
define("BCD_DEFAULT_XRES"            ,   2);
/* Margins */
define("BCD_DEFAULT_MAR_Y1"          ,   0);
define("BCD_DEFAULT_MAR_Y2"          ,   0);
define("BCD_DEFAULT_TEXT_OFFSET"     ,   2);
/* For the I25 Only */
define("BCD_I25_NARROW_BAR" 		 ,   1);
define("BCD_I25_WIDE_BAR" 	     	 ,   2);

/* For the C39 Only */
define("BCD_C39_NARROW_BAR" 		 ,   1);
define("BCD_C39_WIDE_BAR" 	     	 ,   2);

/* For Code 128 */
define("BCD_C128_BAR_1"              ,   1);
define("BCD_C128_BAR_2"              ,   2);
define("BCD_C128_BAR_3"              ,   3);
define("BCD_C128_BAR_4"              ,   4);

  class BarcodeObject {

    var $mWidth, $mHeight, $mStyle, $mBgcolor, $mBrush;
	var $mImg, $mFont;
	var $mError;

	function __construct($Width = BCD_DEFAULT_WIDTH, $Height = BCD_DEFAULT_HEIGHT, $Style = BCD_DEFAULT_STYLE)  {
	    $this->mWidth   = $Width;
		$this->mHeight  = $Height;
		$this->mStyle   = $Style;
		$this->mFont    = BCD_DEFAULT_FONT;
		$this->mImg  	= ImageCreate($this->mWidth, $this->mHeight);
		$dbColor        = $this->mStyle & BCS_REVERSE_COLOR ? BCD_DEFAULT_FOREGROUND_COLOR : BCD_DEFAULT_BACKGROUND_COLOR;
		$dfColor        = $this->mStyle & BCS_REVERSE_COLOR ? BCD_DEFAULT_BACKGROUND_COLOR : BCD_DEFAULT_FOREGROUND_COLOR;
		$this->mBgcolor = ImageColorAllocate($this->mImg, ($dbColor & 0xFF0000) >> 16,
						  ($dbColor & 0x00FF00) >> 8 , $dbColor & 0x0000FF);
		$this->mBrush   = ImageColorAllocate($this->mImg, ($dfColor & 0xFF0000) >> 16,
								  ($dfColor & 0x00FF00) >> 8 , $dfColor & 0x0000FF);
		if (!($this->mStyle & BCS_TRANSPARENT)) {
			ImageFill($this->mImg, $this->mWidth, $this->mHeight, $this->mBgcolor);
		}
	}

    function DrawObject ($xres)	{
	  /* there is not implementation neded, is simply the asbsract function. */
	 return false;
	}

	function DrawBorder () {
	    ImageRectangle($this->mImg, 0, 0, $this->mWidth-1, $this->mHeight-1, $this->mBrush);
	}

	function DrawChar ($Font, $xPos, $yPos, $Char) {
  	  	  ImageString($this->mImg,$Font,$xPos,$yPos,$Char,$this->mBrush);
	}

	function DrawText ($Font, $xPos, $yPos, $Char) {
  	  	  ImageString($this->mImg,$Font,$xPos,$yPos,$Char,$this->mBrush);
	}

	function DrawSingleBar($xPos, $yPos, $xSize, $ySize) {
	  if ($xPos>=0 && $xPos<=$this->mWidth  && ($xPos+$xSize)<=$this->mWidth &&
	      $yPos>=0 && $yPos<=$this->mHeight && ($yPos+$ySize)<=$this->mHeight) {
		    for ($i=0;$i<$xSize;$i++) {
			   ImageLine($this->mImg, $xPos+$i, $yPos, $xPos+$i, $yPos+$ySize, $this->mBrush);
			   }
			   return true;
			 }
		 return false;
	  }

	function GetError() {
	  return $this->mError;
	}

	function GetFontHeight($font) {
	 return ImageFontHeight($font);
	}

	function GetFontWidth($font)  {
	 return ImageFontWidth($font);
	}

	function SetFont($font) {
	 $this->mFont = $font;
	}

	function GetStyle () {
	 return $this->mStyle;
	}

	function SaveTo ($file) {
		return ImagePNG($this->mImg, $file);
	}

	function SetStyle ($Style) {
	 $this->mStyle = $Style;
	}

	function FlushObject () {
	 if (($this->mStyle & BCS_BORDER)) {
	       $this->DrawBorder();
	    }
	   if ($this->mStyle & BCS_IMAGE_PNG) {
         Header("Content-Type: image/png");
	     ImagePng($this->mImg);
	   } else if ($this->mStyle & BCS_IMAGE_JPEG) {
         		Header("Content-Type: image/jpeg");
			    ImageJpeg($this->mImg);
	   		}
	 }

     function DestroyObject () {
	   ImageDestroy($this->mImg);
	 }
   }

} // fin de définition de BARCODE_CLASS
?>