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<?php
//============================================================+
// File name   : tcpdf.php
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// Version     : 6.0.096
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// Begin       : 2002-08-03
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// Last Update : 2014-10-06
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// Author      : Nicola Asuni - Tecnick.com LTD - www.tecnick.com - info@tecnick.com
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// License     : GNU-LGPL v3 (http://www.gnu.org/copyleft/lesser.html)
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// -------------------------------------------------------------------
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// Copyright (C) 2002-2014 Nicola Asuni - Tecnick.com LTD
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//
// This file is part of TCPDF software library.
//
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// TCPDF is free software: you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// TCPDF 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 License
// along with TCPDF. If not, see
// <http://www.tecnick.com/pagefiles/tcpdf/LICENSE.TXT>.
//
// See LICENSE.TXT file for more information.
// -------------------------------------------------------------------
//
// Description :
//   This is a PHP class for generating PDF documents without requiring external extensions.
//
// NOTE:
//   This class was originally derived in 2002 from the Public
//   Domain FPDF class by Olivier Plathey (http://www.fpdf.org),
//   but now is almost entirely rewritten and contains thousands of
//   new lines of code and hundreds new features.
//
// Main features:
//  * no external libraries are required for the basic functions;
//  * all standard page formats, custom page formats, custom margins and units of measure;
//  * UTF-8 Unicode and Right-To-Left languages;
//  * TrueTypeUnicode, TrueType, Type1 and CID-0 fonts;
//  * font subsetting;
//  * methods to publish some XHTML + CSS code, Javascript and Forms;
//  * images, graphic (geometric figures) and transformation methods;
//  * supports JPEG, PNG and SVG images natively, all images supported by GD (GD, GD2, GD2PART, GIF, JPEG, PNG, BMP, XBM, XPM) and all images supported via ImagMagick (http://www.imagemagick.org/www/formats.html)
//  * 1D and 2D barcodes: CODE 39, ANSI MH10.8M-1983, USD-3, 3 of 9, CODE 93, USS-93, Standard 2 of 5, Interleaved 2 of 5, CODE 128 A/B/C, 2 and 5 Digits UPC-Based Extention, EAN 8, EAN 13, UPC-A, UPC-E, MSI, POSTNET, PLANET, RMS4CC (Royal Mail 4-state Customer Code), CBC (Customer Bar Code), KIX (Klant index - Customer index), Intelligent Mail Barcode, Onecode, USPS-B-3200, CODABAR, CODE 11, PHARMACODE, PHARMACODE TWO-TRACKS, Datamatrix, QR-Code, PDF417;
//  * JPEG and PNG ICC profiles, Grayscale, RGB, CMYK, Spot Colors and Transparencies;
//  * automatic page header and footer management;
//  * document encryption up to 256 bit and digital signature certifications;
//  * transactions to UNDO commands;
//  * PDF annotations, including links, text and file attachments;
//  * text rendering modes (fill, stroke and clipping);
//  * multiple columns mode;
//  * no-write page regions;
//  * bookmarks, named destinations and table of content;
//  * text hyphenation;
//  * text stretching and spacing (tracking);
//  * automatic page break, line break and text alignments including justification;
//  * automatic page numbering and page groups;
//  * move and delete pages;
//  * page compression (requires php-zlib extension);
//  * XOBject Templates;
//  * Layers and object visibility.
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//	* PDF/A-1b support
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//============================================================+

/**
 * @file
 * This is a PHP class for generating PDF documents without requiring external extensions.<br>
 * TCPDF project (http://www.tcpdf.org) was originally derived in 2002 from the Public Domain FPDF class by Olivier Plathey (http://www.fpdf.org), but now is almost entirely rewritten.<br>
 * <h3>TCPDF main features are:</h3>
 * <ul>
 * <li>no external libraries are required for the basic functions;</li>
 * <li>all standard page formats, custom page formats, custom margins and units of measure;</li>
 * <li>UTF-8 Unicode and Right-To-Left languages;</li>
 * <li>TrueTypeUnicode, TrueType, Type1 and CID-0 fonts;</li>
 * <li>font subsetting;</li>
 * <li>methods to publish some XHTML + CSS code, Javascript and Forms;</li>
 * <li>images, graphic (geometric figures) and transformation methods;
 * <li>supports JPEG, PNG and SVG images natively, all images supported by GD (GD, GD2, GD2PART, GIF, JPEG, PNG, BMP, XBM, XPM) and all images supported via ImagMagick (http://www.imagemagick.org/www/formats.html)</li>
 * <li>1D and 2D barcodes: CODE 39, ANSI MH10.8M-1983, USD-3, 3 of 9, CODE 93, USS-93, Standard 2 of 5, Interleaved 2 of 5, CODE 128 A/B/C, 2 and 5 Digits UPC-Based Extention, EAN 8, EAN 13, UPC-A, UPC-E, MSI, POSTNET, PLANET, RMS4CC (Royal Mail 4-state Customer Code), CBC (Customer Bar Code), KIX (Klant index - Customer index), Intelligent Mail Barcode, Onecode, USPS-B-3200, CODABAR, CODE 11, PHARMACODE, PHARMACODE TWO-TRACKS, Datamatrix, QR-Code, PDF417;</li>
 * <li>JPEG and PNG ICC profiles, Grayscale, RGB, CMYK, Spot Colors and Transparencies;</li>
 * <li>automatic page header and footer management;</li>
 * <li>document encryption up to 256 bit and digital signature certifications;</li>
 * <li>transactions to UNDO commands;</li>
 * <li>PDF annotations, including links, text and file attachments;</li>
 * <li>text rendering modes (fill, stroke and clipping);</li>
 * <li>multiple columns mode;</li>
 * <li>no-write page regions;</li>
 * <li>bookmarks, named destinations and table of content;</li>
 * <li>text hyphenation;</li>
 * <li>text stretching and spacing (tracking);</li>
 * <li>automatic page break, line break and text alignments including justification;</li>
 * <li>automatic page numbering and page groups;</li>
 * <li>move and delete pages;</li>
 * <li>page compression (requires php-zlib extension);</li>
 * <li>XOBject Templates;</li>
 * <li>Layers and object visibility;</li>
 * <li>PDF/A-1b support.</li>
 * </ul>
 * Tools to encode your unicode fonts are on fonts/utils directory.</p>
 * @package com.tecnick.tcpdf
 * @author Nicola Asuni
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 * @version 6.0.096
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 */

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// TCPDF configuration
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require_once(dirname(__FILE__).'/tcpdf_autoconfig.php');
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// TCPDF static font methods and data
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require_once(dirname(__FILE__).'/include/tcpdf_font_data.php');
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// TCPDF static font methods and data
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require_once(dirname(__FILE__).'/include/tcpdf_fonts.php');
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// TCPDF static color methods and data
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require_once(dirname(__FILE__).'/include/tcpdf_colors.php');
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// TCPDF static image methods and data
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require_once(dirname(__FILE__).'/include/tcpdf_images.php');
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// TCPDF static methods and data
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require_once(dirname(__FILE__).'/include/tcpdf_static.php');
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

/**
 * @class TCPDF
 * PHP class for generating PDF documents without requiring external extensions.
 * TCPDF project (http://www.tcpdf.org) has been originally derived in 2002 from the Public Domain FPDF class by Olivier Plathey (http://www.fpdf.org), but now is almost entirely rewritten.<br>
 * @package com.tecnick.tcpdf
 * @brief PHP class for generating PDF documents without requiring external extensions.
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 * @version 6.0.096
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 * @author Nicola Asuni - info@tecnick.com
 */
class TCPDF {

	// Protected properties

	/**
	 * Current page number.
	 * @protected
	 */
	protected $page;

	/**
	 * Current object number.
	 * @protected
	 */
	protected $n;

	/**
	 * Array of object offsets.
	 * @protected
	 */
	protected $offsets = array();

	/**
	 * Array of object IDs for each page.
	 * @protected
	 */
	protected $pageobjects = array();

	/**
	 * Buffer holding in-memory PDF.
	 * @protected
	 */
	protected $buffer;

	/**
	 * Array containing pages.
	 * @protected
	 */
	protected $pages = array();

	/**
	 * Current document state.
	 * @protected
	 */
	protected $state;

	/**
	 * Compression flag.
	 * @protected
	 */
	protected $compress;

	/**
	 * Current page orientation (P = Portrait, L = Landscape).
	 * @protected
	 */
	protected $CurOrientation;

	/**
	 * Page dimensions.
	 * @protected
	 */
	protected $pagedim = array();

	/**
	 * Scale factor (number of points in user unit).
	 * @protected
	 */
	protected $k;

	/**
	 * Width of page format in points.
	 * @protected
	 */
	protected $fwPt;

	/**
	 * Height of page format in points.
	 * @protected
	 */
	protected $fhPt;

	/**
	 * Current width of page in points.
	 * @protected
	 */
	protected $wPt;

	/**
	 * Current height of page in points.
	 * @protected
	 */
	protected $hPt;

	/**
	 * Current width of page in user unit.
	 * @protected
	 */
	protected $w;

	/**
	 * Current height of page in user unit.
	 * @protected
	 */
	protected $h;

	/**
	 * Left margin.
	 * @protected
	 */
	protected $lMargin;

	/**
	 * Right margin.
	 * @protected
	 */
	protected $rMargin;

	/**
	 * Cell left margin (used by regions).
	 * @protected
	 */
	protected $clMargin;

	/**
	 * Cell right margin (used by regions).
	 * @protected
	 */
	protected $crMargin;

	/**
	 * Top margin.
	 * @protected
	 */
	protected $tMargin;

	/**
	 * Page break margin.
	 * @protected
	 */
	protected $bMargin;

	/**
	 * Array of cell internal paddings ('T' => top, 'R' => right, 'B' => bottom, 'L' => left).
	 * @since 5.9.000 (2010-10-03)
	 * @protected
	 */
	protected $cell_padding = array('T' => 0, 'R' => 0, 'B' => 0, 'L' => 0);

	/**
	 * Array of cell margins ('T' => top, 'R' => right, 'B' => bottom, 'L' => left).
	 * @since 5.9.000 (2010-10-04)
	 * @protected
	 */
	protected $cell_margin = array('T' => 0, 'R' => 0, 'B' => 0, 'L' => 0);

	/**
	 * Current horizontal position in user unit for cell positioning.
	 * @protected
	 */
	protected $x;

	/**
	 * Current vertical position in user unit for cell positioning.
	 * @protected
	 */
	protected $y;

	/**
	 * Height of last cell printed.
	 * @protected
	 */
	protected $lasth;

	/**
	 * Line width in user unit.
	 * @protected
	 */
	protected $LineWidth;

	/**
	 * Array of standard font names.
	 * @protected
	 */
	protected $CoreFonts;

	/**
	 * Array of used fonts.
	 * @protected
	 */
	protected $fonts = array();

	/**
	 * Array of font files.
	 * @protected
	 */
	protected $FontFiles = array();

	/**
	 * Array of encoding differences.
	 * @protected
	 */
	protected $diffs = array();

	/**
	 * Array of used images.
	 * @protected
	 */
	protected $images = array();

	/**
	 * Array of cached files.
	 * @protected
	 */
	protected $cached_files = array();

	/**
	 * Array of Annotations in pages.
	 * @protected
	 */
	protected $PageAnnots = array();

	/**
	 * Array of internal links.
	 * @protected
	 */
	protected $links = array();

	/**
	 * Current font family.
	 * @protected
	 */
	protected $FontFamily;

	/**
	 * Current font style.
	 * @protected
	 */
	protected $FontStyle;

	/**
	 * Current font ascent (distance between font top and baseline).
	 * @protected
	 * @since 2.8.000 (2007-03-29)
	 */
	protected $FontAscent;

	/**
	 * Current font descent (distance between font bottom and baseline).
	 * @protected
	 * @since 2.8.000 (2007-03-29)
	 */
	protected $FontDescent;

	/**
	 * Underlining flag.
	 * @protected
	 */
	protected $underline;

	/**
	 * Overlining flag.
	 * @protected
	 */
	protected $overline;

	/**
	 * Current font info.
	 * @protected
	 */
	protected $CurrentFont;

	/**
	 * Current font size in points.
	 * @protected
	 */
	protected $FontSizePt;

	/**
	 * Current font size in user unit.
	 * @protected
	 */
	protected $FontSize;

	/**
	 * Commands for drawing color.
	 * @protected
	 */
	protected $DrawColor;

	/**
	 * Commands for filling color.
	 * @protected
	 */
	protected $FillColor;

	/**
	 * Commands for text color.
	 * @protected
	 */
	protected $TextColor;

	/**
	 * Indicates whether fill and text colors are different.
	 * @protected
	 */
	protected $ColorFlag;

	/**
	 * Automatic page breaking.
	 * @protected
	 */
	protected $AutoPageBreak;

	/**
	 * Threshold used to trigger page breaks.
	 * @protected
	 */
	protected $PageBreakTrigger;

	/**
	 * Flag set when processing page header.
	 * @protected
	 */
	protected $InHeader = false;

	/**
	 * Flag set when processing page footer.
	 * @protected
	 */
	protected $InFooter = false;

	/**
	 * Zoom display mode.
	 * @protected
	 */
	protected $ZoomMode;

	/**
	 * Layout display mode.
	 * @protected
	 */
	protected $LayoutMode;

	/**
	 * If true set the document information dictionary in Unicode.
	 * @protected
	 */
	protected $docinfounicode = true;

	/**
	 * Document title.
	 * @protected
	 */
	protected $title = '';

	/**
	 * Document subject.
	 * @protected
	 */
	protected $subject = '';

	/**
	 * Document author.
	 * @protected
	 */
	protected $author = '';

	/**
	 * Document keywords.
	 * @protected
	 */
	protected $keywords = '';

	/**
	 * Document creator.
	 * @protected
	 */
	protected $creator = '';

	/**
	 * Starting page number.
	 * @protected
	 */
	protected $starting_page_number = 1;

	/**
	 * The right-bottom (or left-bottom for RTL) corner X coordinate of last inserted image.
	 * @since 2002-07-31
	 * @author Nicola Asuni
	 * @protected
	 */
	protected $img_rb_x;

	/**
	 * The right-bottom corner Y coordinate of last inserted image.
	 * @since 2002-07-31
	 * @author Nicola Asuni
	 * @protected
	 */
	protected $img_rb_y;

	/**
	 * Adjusting factor to convert pixels to user units.
	 * @since 2004-06-14
	 * @author Nicola Asuni
	 * @protected
	 */
	protected $imgscale = 1;

	/**
	 * Boolean flag set to true when the input text is unicode (require unicode fonts).
	 * @since 2005-01-02
	 * @author Nicola Asuni
	 * @protected
	 */
	protected $isunicode = false;

	/**
	 * PDF version.
	 * @since 1.5.3
	 * @protected
	 */
	protected $PDFVersion = '1.7';

	/**
	 * ID of the stored default header template (-1 = not set).
	 * @protected
	 */
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	protected $header_xobjid = false;
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	/**
	 * If true reset the Header Xobject template at each page
	 * @protected
	 */
	protected $header_xobj_autoreset = false;

	/**
	 * Minimum distance between header and top page margin.
	 * @protected
	 */
	protected $header_margin;

	/**
	 * Minimum distance between footer and bottom page margin.
	 * @protected
	 */
	protected $footer_margin;

	/**
	 * Original left margin value.
	 * @protected
	 * @since 1.53.0.TC013
	 */
	protected $original_lMargin;

	/**
	 * Original right margin value.
	 * @protected
	 * @since 1.53.0.TC013
	 */
	protected $original_rMargin;

	/**
	 * Default font used on page header.
	 * @protected
	 */
	protected $header_font;

	/**
	 * Default font used on page footer.
	 * @protected
	 */
	protected $footer_font;

	/**
	 * Language templates.
	 * @protected
	 */
	protected $l;

	/**
	 * Barcode to print on page footer (only if set).
	 * @protected
	 */
	protected $barcode = false;

	/**
	 * Boolean flag to print/hide page header.
	 * @protected
	 */
	protected $print_header = true;

	/**
	 * Boolean flag to print/hide page footer.
	 * @protected
	 */
	protected $print_footer = true;

	/**
	 * Header image logo.
	 * @protected
	 */
	protected $header_logo = '';

	/**
	 * Width of header image logo in user units.
	 * @protected
	 */
	protected $header_logo_width = 30;

	/**
	 * Title to be printed on default page header.
	 * @protected
	 */
	protected $header_title = '';

	/**
	 * String to pring on page header after title.
	 * @protected
	 */
	protected $header_string = '';

	/**
	 * Color for header text (RGB array).
	 * @since 5.9.174 (2012-07-25)
	 * @protected
	 */
	protected $header_text_color = array(0,0,0);

	/**
	 * Color for header line (RGB array).
	 * @since 5.9.174 (2012-07-25)
	 * @protected
	 */
	protected $header_line_color = array(0,0,0);

	/**
	 * Color for footer text (RGB array).
	 * @since 5.9.174 (2012-07-25)
	 * @protected
	 */
	protected $footer_text_color = array(0,0,0);

	/**
	 * Color for footer line (RGB array).
	 * @since 5.9.174 (2012-07-25)
	 * @protected
	 */
	protected $footer_line_color = array(0,0,0);

	/**
	 * Text shadow data array.
	 * @since 5.9.174 (2012-07-25)
	 * @protected
	 */
	protected $txtshadow = array('enabled'=>false, 'depth_w'=>0, 'depth_h'=>0, 'color'=>false, 'opacity'=>1, 'blend_mode'=>'Normal');

	/**
	 * Default number of columns for html table.
	 * @protected
	 */
	protected $default_table_columns = 4;

	// variables for html parser

	/**
	 * HTML PARSER: array to store current link and rendering styles.
	 * @protected
	 */
	protected $HREF = array();

	/**
	 * List of available fonts on filesystem.
	 * @protected
	 */
	protected $fontlist = array();

	/**
	 * Current foreground color.
	 * @protected
	 */
	protected $fgcolor;

	/**
	 * HTML PARSER: array of boolean values, true in case of ordered list (OL), false otherwise.
	 * @protected
	 */
	protected $listordered = array();

	/**
	 * HTML PARSER: array count list items on nested lists.
	 * @protected
	 */
	protected $listcount = array();

	/**
	 * HTML PARSER: current list nesting level.
	 * @protected
	 */
	protected $listnum = 0;

	/**
	 * HTML PARSER: indent amount for lists.
	 * @protected
	 */
	protected $listindent = 0;

	/**
	 * HTML PARSER: current list indententation level.
	 * @protected
	 */
	protected $listindentlevel = 0;

	/**
	 * Current background color.
	 * @protected
	 */
	protected $bgcolor;

	/**
	 * Temporary font size in points.
	 * @protected
	 */
	protected $tempfontsize = 10;

	/**
	 * Spacer string for LI tags.
	 * @protected
	 */
	protected $lispacer = '';

	/**
	 * Default encoding.
	 * @protected
	 * @since 1.53.0.TC010
	 */
	protected $encoding = 'UTF-8';

	/**
	 * PHP internal encoding.
	 * @protected
	 * @since 1.53.0.TC016
	 */
	protected $internal_encoding;

	/**
	 * Boolean flag to indicate if the document language is Right-To-Left.
	 * @protected
	 * @since 2.0.000
	 */
	protected $rtl = false;

	/**
	 * Boolean flag used to force RTL or LTR string direction.
	 * @protected
	 * @since 2.0.000
	 */
	protected $tmprtl = false;

	// --- Variables used for document encryption:

	/**
	 * IBoolean flag indicating whether document is protected.
	 * @protected
	 * @since 2.0.000 (2008-01-02)
	 */
	protected $encrypted;

	/**
	 * Array containing encryption settings.
	 * @protected
	 * @since 5.0.005 (2010-05-11)
	 */
	protected $encryptdata = array();

	/**
	 * Last RC4 key encrypted (cached for optimisation).
	 * @protected
	 * @since 2.0.000 (2008-01-02)
	 */
	protected $last_enc_key;

	/**
	 * Last RC4 computed key.
	 * @protected
	 * @since 2.0.000 (2008-01-02)
	 */
	protected $last_enc_key_c;

	/**
	 * File ID (used on document trailer).
	 * @protected
	 * @since 5.0.005 (2010-05-12)
	 */
	protected $file_id;

	// --- bookmark ---

	/**
	 * Outlines for bookmark.
	 * @protected
	 * @since 2.1.002 (2008-02-12)
	 */
	protected $outlines = array();

	/**
	 * Outline root for bookmark.
	 * @protected
	 * @since 2.1.002 (2008-02-12)
	 */
	protected $OutlineRoot;

	// --- javascript and form ---

	/**
	 * Javascript code.
	 * @protected
	 * @since 2.1.002 (2008-02-12)
	 */
	protected $javascript = '';

	/**
	 * Javascript counter.
	 * @protected
	 * @since 2.1.002 (2008-02-12)
	 */
	protected $n_js;

	/**
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	 * @protected
	 * @since 2.8.000 (2008-03-19)
	 */
	protected $linethrough;

	/**
	 * Array with additional document-wide usage rights for the document.
	 * @protected
	 * @since 5.8.014 (2010-08-23)
	 */
	protected $ur = array();

	/**
	 * DPI (Dot Per Inch) Document Resolution (do not change).
	 * @protected
	 * @since 3.0.000 (2008-03-27)
	 */
	protected $dpi = 72;

	/**
	 * Array of page numbers were a new page group was started (the page numbers are the keys of the array).
	 * @protected
	 * @since 3.0.000 (2008-03-27)
	 */
	protected $newpagegroup = array();

	/**
	 * Array that contains the number of pages in each page group.
	 * @protected
	 * @since 3.0.000 (2008-03-27)
	 */
	protected $pagegroups = array();

	/**
	 * Current page group number.
	 * @protected
	 * @since 3.0.000 (2008-03-27)
	 */
	protected $currpagegroup = 0;

	/**
	 * Array of transparency objects and parameters.
	 * @protected
	 * @since 3.0.000 (2008-03-27)
	 */
	protected $extgstates;

	/**
	 * Set the default JPEG compression quality (1-100).
	 * @protected
	 * @since 3.0.000 (2008-03-27)
	 */
	protected $jpeg_quality;

	/**
	 * Default cell height ratio.
	 * @protected
	 * @since 3.0.014 (2008-05-23)
	 */
	protected $cell_height_ratio = K_CELL_HEIGHT_RATIO;

	/**
	 * PDF viewer preferences.
	 * @protected
	 * @since 3.1.000 (2008-06-09)
	 */
	protected $viewer_preferences;

	/**
	 * A name object specifying how the document should be displayed when opened.
	 * @protected
	 * @since 3.1.000 (2008-06-09)
	 */
	protected $PageMode;

	/**
	 * Array for storing gradient information.
	 * @protected
	 * @since 3.1.000 (2008-06-09)
	 */
	protected $gradients = array();

	/**
	 * Array used to store positions inside the pages buffer (keys are the page numbers).
	 * @protected
	 * @since 3.2.000 (2008-06-26)
	 */
	protected $intmrk = array();

	/**
	 * Array used to store positions inside the pages buffer (keys are the page numbers).
	 * @protected
	 * @since 5.7.000 (2010-08-03)
	 */
	protected $bordermrk = array();

	/**
	 * Array used to store page positions to track empty pages (keys are the page numbers).
	 * @protected
	 * @since 5.8.007 (2010-08-18)
	 */
	protected $emptypagemrk = array();

	/**
	 * Array used to store content positions inside the pages buffer (keys are the page numbers).
	 * @protected
	 * @since 4.6.021 (2009-07-20)
	 */
	protected $cntmrk = array();

	/**
	 * Array used to store footer positions of each page.
	 * @protected
	 * @since 3.2.000 (2008-07-01)
	 */
	protected $footerpos = array();

	/**
	 * Array used to store footer length of each page.
	 * @protected
	 * @since 4.0.014 (2008-07-29)
	 */
	protected $footerlen = array();

	/**
	 * Boolean flag to indicate if a new line is created.
	 * @protected
	 * @since 3.2.000 (2008-07-01)
	 */
	protected $newline = true;

	/**
	 * End position of the latest inserted line.
	 * @protected
	 * @since 3.2.000 (2008-07-01)
	 */
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