annotate .svn/pristine/52/526a207c3d794968f2a7c5b89f01aadb8abb89d2.svn-base @ 929:5f33065ddc4b redmine-1.3

Update to Redmine SVN rev 9414 on 1.3-stable branch

#============================================================+
# File name   : tcpdf.rb
# Begin       : 2002-08-03
# Last Update : 2007-03-20
# Author      : Nicola Asuni
# Version     : 1.53.0.TC031
# License     : GNU LGPL (http://www.gnu.org/copyleft/lesser.html)
#
# Description : This is a Ruby class for generating PDF files 
#               on-the-fly without requiring external 
#               extensions.
#
# IMPORTANT:
# This class is an extension and improvement of the Public Domain 
# FPDF class by Olivier Plathey (http://www.fpdf.org).
#
# Main changes by Nicola Asuni:
#    Ruby porting;
#    UTF-8 Unicode support;
#    code refactoring;
#    source code clean up;
#    code style and formatting;
#    source code documentation using phpDocumentor (www.phpdoc.org);
#    All ISO page formats were included;
#    image scale factor;
#    includes methods to parse and printsome XHTML code, supporting the following elements: h1, h2, h3, h4, h5, h6, b, u, i, a, img, p, br, strong, em, font, blockquote, li, ul, ol, hr, td, th, tr, table, sup, sub, small;
#    includes a method to print various barcode formats using an improved version of "Generic Barcode Render Class" by Karim Mribti (http://www.mribti.com/barcode/) (require GD library: http://www.boutell.com/gd/);
#    defines standard Header() and Footer() methods.
#
#   Ported to Ruby by Ed Moss 2007-08-06
#
#============================================================+

#
# TCPDF Class.
# @package com.tecnick.tcpdf
#
 
@@version = "1.53.0.TC031"
@@fpdf_charwidths = {}

PDF_PRODUCER = 'TCPDF via RFPDF 1.53.0.TC031 (http://tcpdf.sourceforge.net)'

module TCPDFFontDescriptor
  @@descriptors = { 'freesans' => {} }
  @@font_name = 'freesans'

  def self.font(font_name)
    @@descriptors[font_name.gsub(".rb", "")]
  end

  def self.define(font_name = 'freesans')
    @@descriptors[font_name] ||= {}
    yield @@descriptors[font_name]
  end
end

# This is a Ruby class for generating PDF files on-the-fly without requiring external extensions.<br>
# This class is an extension and improvement of the FPDF class by Olivier Plathey (http://www.fpdf.org).<br>
# This version contains some changes: [porting to Ruby, support for UTF-8 Unicode, code style and formatting, php documentation (www.phpdoc.org), ISO page formats, minor improvements, image scale factor]<br>
# TCPDF project (http://tcpdf.sourceforge.net) is based on the Public Domain FPDF class by Olivier Plathey (http://www.fpdf.org).<br>
# To add your own TTF fonts please read /fonts/README.TXT
# @name TCPDF
# @package com.tecnick.tcpdf
# @@version 1.53.0.TC031
# @author Nicola Asuni
# @link http://tcpdf.sourceforge.net
# @license http://www.gnu.org/copyleft/lesser.html LGPL
#
class TCPDF
  include RFPDF
  include Core::RFPDF
  include RFPDF::Math
  
  def logger
    Rails.logger
  end

  cattr_accessor :k_cell_height_ratio
  @@k_cell_height_ratio = 1.25

  cattr_accessor :k_blank_image
  @@k_blank_image = ""
  
  cattr_accessor :k_small_ratio  
  @@k_small_ratio = 2/3.0
  
  cattr_accessor :k_path_cache
  @@k_path_cache = Rails.root.join('tmp')
  
  cattr_accessor :k_path_url_cache
  @@k_path_url_cache = Rails.root.join('tmp')
  
  cattr_accessor :decoder
		
	attr_accessor :barcode
	
	attr_accessor :buffer
	
	attr_accessor :diffs
	
	attr_accessor :color_flag
	
	attr_accessor :default_table_columns

	attr_accessor :max_table_columns
	
	attr_accessor :default_font

	attr_accessor :draw_color
	
	attr_accessor :encoding
	
	attr_accessor :fill_color
	
	attr_accessor :fonts
	
	attr_accessor :font_family
	
	attr_accessor :font_files
	
	cattr_accessor :font_path
	
	attr_accessor :font_style
	
	attr_accessor :font_size_pt
	
	attr_accessor :header_width
	
	attr_accessor :header_logo
	
	attr_accessor :header_logo_width
	
	attr_accessor :header_title
	
	attr_accessor :header_string
	
	attr_accessor :images
	
	attr_accessor :img_scale
	
	attr_accessor :in_footer
	
	attr_accessor :is_unicode

	attr_accessor :lasth
	
	attr_accessor :links
	
	attr_accessor :list_ordered
	
	attr_accessor :list_count
	
	attr_accessor :li_spacer
	
	attr_accessor :n
	
	attr_accessor :offsets
	
	attr_accessor :orientation_changes
	
	attr_accessor :page
	
	attr_accessor :page_links
	
	attr_accessor :pages
	
	attr_accessor :pdf_version
	
	attr_accessor :prevfill_color
	
	attr_accessor :prevtext_color
	
	attr_accessor :print_header
	
	attr_accessor :print_footer
	
	attr_accessor :state
	
	attr_accessor :tableborder
	
	attr_accessor :tdbegin
	
	attr_accessor :tdwidth
	
	attr_accessor :tdheight
	
	attr_accessor :tdalign
	
	attr_accessor :tdfill
	
	attr_accessor :tempfontsize
	
	attr_accessor :text_color
	
	attr_accessor :underline
	
	attr_accessor :ws
	
	#
	# This is the class constructor. 
	# It allows to set up the page format, the orientation and 
	# the measure unit used in all the methods (except for the font sizes).
	# @since 1.0
	# @param string :orientation page orientation. Possible values are (case insensitive):<ul><li>P or Portrait (default)</li><li>L or Landscape</li></ul>
	# @param string :unit User measure unit. Possible values are:<ul><li>pt: point</li><li>mm: millimeter (default)</li><li>cm: centimeter</li><li>in: inch</li></ul><br />A point equals 1/72 of inch, that is to say about 0.35 mm (an inch being 2.54 cm). This is a very common unit in typography; font sizes are expressed in that unit.
	# @param mixed :format The format used for pages. It can be either one of the following values (case insensitive) or a custom format in the form of a two-element array containing the width and the height (expressed in the unit given by unit).<ul><li>4A0</li><li>2A0</li><li>A0</li><li>A1</li><li>A2</li><li>A3</li><li>A4 (default)</li><li>A5</li><li>A6</li><li>A7</li><li>A8</li><li>A9</li><li>A10</li><li>B0</li><li>B1</li><li>B2</li><li>B3</li><li>B4</li><li>B5</li><li>B6</li><li>B7</li><li>B8</li><li>B9</li><li>B10</li><li>C0</li><li>C1</li><li>C2</li><li>C3</li><li>C4</li><li>C5</li><li>C6</li><li>C7</li><li>C8</li><li>C9</li><li>C10</li><li>RA0</li><li>RA1</li><li>RA2</li><li>RA3</li><li>RA4</li><li>SRA0</li><li>SRA1</li><li>SRA2</li><li>SRA3</li><li>SRA4</li><li>LETTER</li><li>LEGAL</li><li>EXECUTIVE</li><li>FOLIO</li></ul>
	# @param boolean :unicode TRUE means that the input text is unicode (default = true)
	# @param String :encoding charset encoding; default is UTF-8
	#
	def initialize(orientation = 'P',  unit = 'mm', format = 'A4', unicode = true, encoding = "UTF-8")
		
		# Set internal character encoding to ASCII#
		#FIXME 2007-05-25 (EJM) Level=0 - 
		# if (respond_to?("mb_internal_encoding") and mb_internal_encoding())
		# 	@internal_encoding = mb_internal_encoding();
		# 	mb_internal_encoding("ASCII");
		# }
			
		#Some checks
		dochecks();
		
		begin	  
		  @@decoder = HTMLEntities.new 
		rescue
		  @@decoder = nil
		end
		
		#Initialization of properties
  	@barcode ||= false
		@buffer ||= ''
		@diffs ||= []
		@color_flag ||= false
  	@default_table_columns ||= 4
  	@table_columns ||= 0
  	@max_table_columns ||= []
  	@tr_id ||= 0
  	@max_td_page ||= []
  	@max_td_y ||= []
  	@t_columns ||= 0
  	@default_font ||= "FreeSans" if unicode
  	@default_font ||= "Helvetica"
		@draw_color ||= '0 G'
  	@encoding ||= "UTF-8"
		@fill_color ||= '0 g'
		@fonts ||= {}
		@font_family ||= ''
		@font_files ||= {}
		@font_style ||= ''
		@font_size ||= 12
		@font_size_pt ||= 12
  	@header_width ||= 0
  	@header_logo ||= ""
  	@header_logo_width ||= 30
  	@header_title ||= ""
  	@header_string ||= ""
		@images ||= {}
  	@img_scale ||= 1
		@in_footer ||= false
		@is_unicode = unicode
		@lasth ||= 0
		@links ||= []
  	@list_ordered ||= []
  	@list_count ||= []
  	@li_spacer ||= ""
  	@li_count ||= 0
  	@spacer ||= ""
  	@quote_count ||= 0
  	@prevquote_count ||= 0
  	@quote_top ||= []
  	@quote_page ||= []
		@n ||= 2
		@offsets ||= []
		@orientation_changes ||= []
		@page ||= 0
		@page_links ||= {}
		@pages ||= []
  	@pdf_version ||= "1.3"
  	@prevfill_color ||= [255,255,255]
  	@prevtext_color ||= [0,0,0]
  	@print_header ||= false
  	@print_footer ||= false
		@state ||= 0
  	@tableborder ||= 0
  	@tdbegin ||= false
  	@tdwidth ||= 0
  	@tdheight ||= 0
  	@tdalign ||= "L"
  	@tdfill ||= 0
  	@tempfontsize ||= 10
		@text_color ||= '0 g'
		@underline ||= false
		@deleted ||= false
		@ws ||= 0
		
		#Standard Unicode fonts
		@core_fonts = {
		'courier'=>'Courier',
		'courierB'=>'Courier-Bold',
		'courierI'=>'Courier-Oblique',
		'courierBI'=>'Courier-BoldOblique',
		'helvetica'=>'Helvetica',
		'helveticaB'=>'Helvetica-Bold',
		'helveticaI'=>'Helvetica-Oblique',
		'helveticaBI'=>'Helvetica-BoldOblique',
		'times'=>'Times-Roman',
		'timesB'=>'Times-Bold',
		'timesI'=>'Times-Italic',
		'timesBI'=>'Times-BoldItalic',
		'symbol'=>'Symbol',
		'zapfdingbats'=>'ZapfDingbats'}

		#Scale factor
		case unit.downcase
			when 'pt' ; @k=1
			when 'mm' ; @k=72/25.4
			when 'cm' ; @k=72/2.54
			when 'in' ; @k=72
			else Error("Incorrect unit: #{unit}")
		end

		#Page format
		if format.is_a?(String)
			# Page formats (45 standard ISO paper formats and 4 american common formats).
			# Paper cordinates are calculated in this way: (inches# 72) where (1 inch = 2.54 cm)
			case (format.upcase)
				when  '4A0' ; format = [4767.87,6740.79]
				when  '2A0' ; format = [3370.39,4767.87]
				when  'A0' ; format = [2383.94,3370.39]
				when  'A1' ; format = [1683.78,2383.94]
				when  'A2' ; format = [1190.55,1683.78]
				when  'A3' ; format = [841.89,1190.55]
				when  'A4' ; format = [595.28,841.89] # ; default
				when  'A5' ; format = [419.53,595.28]
				when  'A6' ; format = [297.64,419.53]
				when  'A7' ; format = [209.76,297.64]
				when  'A8' ; format = [147.40,209.76]
				when  'A9' ; format = [104.88,147.40]
				when  'A10' ; format = [73.70,104.88]
				when  'B0' ; format = [2834.65,4008.19]
				when  'B1' ; format = [2004.09,2834.65]
				when  'B2' ; format = [1417.32,2004.09]
				when  'B3' ; format = [1000.63,1417.32]
				when  'B4' ; format = [708.66,1000.63]
				when  'B5' ; format = [498.90,708.66]
				when  'B6' ; format = [354.33,498.90]
				when  'B7' ; format = [249.45,354.33]
				when  'B8' ; format = [175.75,249.45]
				when  'B9' ; format = [124.72,175.75]
				when  'B10' ; format = [87.87,124.72]
				when  'C0' ; format = [2599.37,3676.54]
				when  'C1' ; format = [1836.85,2599.37]
				when  'C2' ; format = [1298.27,1836.85]
				when  'C3' ; format = [918.43,1298.27]
				when  'C4' ; format = [649.13,918.43]
				when  'C5' ; format = [459.21,649.13]
				when  'C6' ; format = [323.15,459.21]
				when  'C7' ; format = [229.61,323.15]
				when  'C8' ; format = [161.57,229.61]
				when  'C9' ; format = [113.39,161.57]
				when  'C10' ; format = [79.37,113.39]
				when  'RA0' ; format = [2437.80,3458.27]
				when  'RA1' ; format = [1729.13,2437.80]
				when  'RA2' ; format = [1218.90,1729.13]
				when  'RA3' ; format = [864.57,1218.90]
				when  'RA4' ; format = [609.45,864.57]
				when  'SRA0' ; format = [2551.18,3628.35]
				when  'SRA1' ; format = [1814.17,2551.18]
				when  'SRA2' ; format = [1275.59,1814.17]
				when  'SRA3' ; format = [907.09,1275.59]
				when  'SRA4' ; format = [637.80,907.09]
				when  'LETTER' ; format = [612.00,792.00]
				when  'LEGAL' ; format = [612.00,1008.00]
				when  'EXECUTIVE' ; format = [521.86,756.00]
				when  'FOLIO' ; format = [612.00,936.00]
				#else then Error("Unknown page format: #{format}"
			end
			@fw_pt = format[0]
			@fh_pt = format[1]
		else
			@fw_pt = format[0]*@k
			@fh_pt = format[1]*@k
		end

		@fw = @fw_pt/@k
		@fh = @fh_pt/@k

		#Page orientation
		orientation = orientation.downcase
		if orientation == 'p' or orientation == 'portrait'
			@def_orientation = 'P'
			@w_pt = @fw_pt
			@h_pt = @fh_pt
		elsif orientation == 'l' or orientation == 'landscape'
			@def_orientation = 'L'
			@w_pt = @fh_pt
			@h_pt = @fw_pt
		else
			Error("Incorrect orientation: #{orientation}")
		end

		@cur_orientation = @def_orientation
		@w = @w_pt/@k
		@h = @h_pt/@k
		#Page margins (1 cm)
		margin = 28.35/@k
		SetMargins(margin, margin)
		#Interior cell margin (1 mm)
		@c_margin = margin / 10
		#Line width (0.2 mm)
		@line_width = 0.567 / @k
		#Automatic page break
		SetAutoPageBreak(true, 2 * margin)
		#Full width display mode
		SetDisplayMode('fullwidth')
		#Compression
		SetCompression(true)
		#Set default PDF version number
		@pdf_version = "1.3"
		
		@encoding = encoding
		@b = 0
		@i = 0
		@u = 0
		@href = ''
		@fontlist = ["arial", "times", "courier", "helvetica", "symbol"]
		@issetfont = false
		@issetcolor = false
	
		SetFillColor(200, 200, 200, true)
		SetTextColor(0, 0, 0, true)
	end
	
	#
	# Set the image scale.
	# @param float :scale image scale.
	# @author Nicola Asuni
	# @since 1.5.2
	#
	def SetImageScale(scale)
		@img_scale = scale;
	end
  alias_method :set_image_scale, :SetImageScale
	
	#
	# Returns the image scale.
	# @return float image scale.
	# @author Nicola Asuni
	# @since 1.5.2
	#
	def GetImageScale()
		return @img_scale;
	end
  alias_method :get_image_scale, :GetImageScale
  
	#
	# Returns the page width in units.
	# @return int page width.
	# @author Nicola Asuni
	# @since 1.5.2
	#
	def GetPageWidth()
		return @w;
	end
  alias_method :get_page_width, :GetPageWidth
  
	#
	# Returns the page height in units.
	# @return int page height.
	# @author Nicola Asuni
	# @since 1.5.2
	#
	def GetPageHeight()
		return @h;
	end
  alias_method :get_page_height, :GetPageHeight
  
	#
	# Returns the page break margin.
	# @return int page break margin.
	# @author Nicola Asuni
	# @since 1.5.2
	#
	def GetBreakMargin()
		return @b_margin;
	end
  alias_method :get_break_margin, :GetBreakMargin

	#
	# Returns the scale factor (number of points in user unit).
	# @return int scale factor.
	# @author Nicola Asuni
	# @since 1.5.2
	#
	def GetScaleFactor()
		return @k;
	end
  alias_method :get_scale_factor, :GetScaleFactor

	#
	# Defines the left, top and right margins. By default, they equal 1 cm. Call this method to change them.
	# @param float :left Left margin.
	# @param float :top Top margin.
	# @param float :right Right margin. Default value is the left one.
	# @since 1.0
	# @see SetLeftMargin(), SetTopMargin(), SetRightMargin(), SetAutoPageBreak()
	#
	def SetMargins(left, top, right=-1)
		#Set left, top and right margins
		@l_margin = left
		@t_margin = top
		if (right == -1)
			right = left
		end
		@r_margin = right
	end
  alias_method :set_margins, :SetMargins

	#
	# Defines the left margin. The method can be called before creating the first page. If the current abscissa gets out of page, it is brought back to the margin.
	# @param float :margin The margin.
	# @since 1.4
	# @see SetTopMargin(), SetRightMargin(), SetAutoPageBreak(), SetMargins()
	#
	def SetLeftMargin(margin)
		#Set left margin
		@l_margin = margin
		if ((@page>0) and (@x < margin))
			@x = margin
		end
	end
  alias_method :set_left_margin, :SetLeftMargin

	#
	# Defines the top margin. The method can be called before creating the first page.
	# @param float :margin The margin.
	# @since 1.5
	# @see SetLeftMargin(), SetRightMargin(), SetAutoPageBreak(), SetMargins()
	#
	def SetTopMargin(margin)
		#Set top margin
		@t_margin = margin
	end
  alias_method :set_top_margin, :SetTopMargin

	#
	# Defines the right margin. The method can be called before creating the first page.
	# @param float :margin The margin.
	# @since 1.5
	# @see SetLeftMargin(), SetTopMargin(), SetAutoPageBreak(), SetMargins()
	#
	def SetRightMargin(margin)
		#Set right margin
		@r_margin = margin
	end
  alias_method :set_right_margin, :SetRightMargin

	#
	# Enables or disables the automatic page breaking mode. When enabling, the second parameter is the distance from the bottom of the page that defines the triggering limit. By default, the mode is on and the margin is 2 cm.
	# @param boolean :auto Boolean indicating if mode should be on or off.
	# @param float :margin Distance from the bottom of the page.
	# @since 1.0
	# @see Cell(), MultiCell(), AcceptPageBreak()
	#
	def SetAutoPageBreak(auto, margin=0)
		#Set auto page break mode and triggering margin
		@auto_page_break = auto
		@b_margin = margin
		@page_break_trigger = @h - margin
	end
  alias_method :set_auto_page_break, :SetAutoPageBreak

	#
	# Defines the way the document is to be displayed by the viewer. The zoom level can be set: pages can be displayed entirely on screen, occupy the full width of the window, use real size, be scaled by a specific zooming factor or use viewer default (configured in the Preferences menu of Acrobat). The page layout can be specified too: single at once, continuous display, two columns or viewer default. By default, documents use the full width mode with continuous display.
	# @param mixed :zoom The zoom to use. It can be one of the following string values or a number indicating the zooming factor to use. <ul><li>fullpage: displays the entire page on screen </li><li>fullwidth: uses maximum width of window</li><li>real: uses real size (equivalent to 100% zoom)</li><li>default: uses viewer default mode</li></ul>
	# @param string :layout The page layout. Possible values are:<ul><li>single: displays one page at once</li><li>continuous: displays pages continuously (default)</li><li>two: displays two pages on two columns</li><li>default: uses viewer default mode</li></ul>
	# @since 1.2
	#
	def SetDisplayMode(zoom, layout = 'continuous')
		#Set display mode in viewer
		if (zoom == 'fullpage' or zoom == 'fullwidth' or zoom == 'real' or zoom == 'default' or !zoom.is_a?(String))
			@zoom_mode = zoom
		else
			Error("Incorrect zoom display mode: #{zoom}")
		end
		if (layout == 'single' or layout == 'continuous' or layout == 'two' or layout == 'default')
			@layout_mode = layout
		else
			Error("Incorrect layout display mode: #{layout}")
		end
	end
  alias_method :set_display_mode, :SetDisplayMode

	#
	# Activates or deactivates page compression. When activated, the internal representation of each page is compressed, which leads to a compression ratio of about 2 for the resulting document. Compression is on by default.
	# Note: the Zlib extension is required for this feature. If not present, compression will be turned off.
	# @param boolean :compress Boolean indicating if compression must be enabled.
	# @since 1.4
	#
	def SetCompression(compress)
		#Set page compression
		if (respond_to?('gzcompress'))
			@compress = compress
		else
			@compress = false
		end
	end
  alias_method :set_compression, :SetCompression

	#
	# Defines the title of the document.
	# @param string :title The title.
	# @since 1.2
	# @see SetAuthor(), SetCreator(), SetKeywords(), SetSubject()
	#
	def SetTitle(title)
		#Title of document
		@title = title
	end
  alias_method :set_title, :SetTitle

	#
	# Defines the subject of the document.
	# @param string :subject The subject.
	# @since 1.2
	# @see SetAuthor(), SetCreator(), SetKeywords(), SetTitle()
	#
	def SetSubject(subject)
		#Subject of document
		@subject = subject
	end
  alias_method :set_subject, :SetSubject

	#
	# Defines the author of the document.
	# @param string :author The name of the author.
	# @since 1.2
	# @see SetCreator(), SetKeywords(), SetSubject(), SetTitle()
	#
	def SetAuthor(author)
		#Author of document
		@author = author
	end
  alias_method :set_author, :SetAuthor

	#
	# Associates keywords with the document, generally in the form 'keyword1 keyword2 ...'.
	# @param string :keywords The list of keywords.
	# @since 1.2
	# @see SetAuthor(), SetCreator(), SetSubject(), SetTitle()
	#
	def SetKeywords(keywords)
		#Keywords of document
		@keywords = keywords
	end
  alias_method :set_keywords, :SetKeywords

	#
	# Defines the creator of the document. This is typically the name of the application that generates the PDF.
	# @param string :creator The name of the creator.
	# @since 1.2
	# @see SetAuthor(), SetKeywords(), SetSubject(), SetTitle()
	#
	def SetCreator(creator)
		#Creator of document
		@creator = creator
	end
  alias_method :set_creator, :SetCreator

	#
	# Defines an alias for the total number of pages. It will be substituted as the document is closed.<br />
	# <b>Example:</b><br />
	# <pre>
	# class PDF extends TCPDF {
	# 	def Footer()
	# 		#Go to 1.5 cm from bottom
	# 		SetY(-15);
	# 		#Select Arial italic 8
	# 		SetFont('Arial','I',8);
	# 		#Print current and total page numbers
	# 		Cell(0,10,'Page '.PageNo().'/{nb}',0,0,'C');
	# 	end
	# }
	# :pdf=new PDF();
	# :pdf->alias_nb_pages();
	# </pre>
	# @param string :alias The alias. Default valuenb}.
	# @since 1.4
	# @see PageNo(), Footer()
	#
	def AliasNbPages(alias_nb ='{nb}')
		#Define an alias for total number of pages
		@alias_nb_pages = escapetext(alias_nb)
	end
	alias_method :alias_nb_pages, :AliasNbPages

	#
	# This method is automatically called in case of fatal error; it simply outputs the message and halts the execution. An inherited class may override it to customize the error handling but should always halt the script, or the resulting document would probably be invalid.
	# 2004-06-11 :: Nicola Asuni : changed bold tag with strong
	# @param string :msg The error message
	# @since 1.0
	#
	def Error(msg)
		#Fatal error
		raise ("TCPDF error: #{msg}")
	end
  alias_method :error, :Error

	#
	# This method begins the generation of the PDF document. It is not necessary to call it explicitly because AddPage() does it automatically.
	# Note: no page is created by this method
	# @since 1.0
	# @see AddPage(), Close()
	#
	def Open()
		#Begin document
		@state = 1
	end
  # alias_method :open, :Open

	#
	# Terminates the PDF document. It is not necessary to call this method explicitly because Output() does it automatically. If the document contains no page, AddPage() is called to prevent from getting an invalid document.
	# @since 1.0
	# @see Open(), Output()
	#
	def Close()
		#Terminate document
		if (@state==3)
			return;
		end
		if (@page==0)
			AddPage();
		end
		#Page footer
		@in_footer=true;
		Footer();
		@in_footer=false;
		#Close page
		endpage();
		#Close document
		enddoc();
	end
  # alias_method :close, :Close

	#
	# Adds a new page to the document. If a page is already present, the Footer() method is called first to output the footer. Then the page is added, the current position set to the top-left corner according to the left and top margins, and Header() is called to display the header.
	# The font which was set before calling is automatically restored. There is no need to call SetFont() again if you want to continue with the same font. The same is true for colors and line width.
	# The origin of the coordinate system is at the top-left corner and increasing ordinates go downwards.
	# @param string :orientation Page orientation. Possible values are (case insensitive):<ul><li>P or Portrait</li><li>L or Landscape</li></ul> The default value is the one passed to the constructor.
	# @since 1.0
	# @see TCPDF(), Header(), Footer(), SetMargins()
	#
	def AddPage(orientation='')
		#Start a new page
		if (@state==0)
			Open();
		end
		family=@font_family;
		style=@font_style + (@underline ? 'U' : '') + (@deleted ? 'D' : '');
		size=@font_size_pt;
		lw=@line_width;
		dc=@draw_color;
		fc=@fill_color;
		tc=@text_color;
		cf=@color_flag;
		if (@page>0)
			#Page footer
			@in_footer=true;
			Footer();
			@in_footer=false;
			#Close page
			endpage();
		end
		#Start new page
		beginpage(orientation);
		#Set line cap style to square
		out('2 J');
		#Set line width
		@line_width = lw;
		out(sprintf('%.2f w', lw*@k));
		#Set font
		if (family)
			SetFont(family, style, size);
		end
		#Set colors
		@draw_color = dc;
		if (dc!='0 G')
			out(dc);
		end
		@fill_color = fc;
		if (fc!='0 g')
			out(fc);
		end
		@text_color = tc;
		@color_flag = cf;
		#Page header
		Header();
		#Restore line width
		if (@line_width != lw)
			@line_width = lw;
			out(sprintf('%.2f w', lw*@k));
		end
		#Restore font
		if (family)
			SetFont(family, style, size);
		end
		#Restore colors
		if (@draw_color != dc)
			@draw_color = dc;
			out(dc);
		end
		if (@fill_color != fc)
			@fill_color = fc;
			out(fc);
		end
		@text_color = tc;
		@color_flag = cf;
	end
	  alias_method :add_page, :AddPage
	
  #
  # Rotate object.
  # @param float :angle angle in degrees for counter-clockwise rotation
  # @param int :x abscissa of the rotation center. Default is current x position
  # @param int :y ordinate of the rotation center. Default is current y position
  #
  def Rotate(angle, x="", y="")

  	if (x == '')
  		x = @x;
  	end
  	
  	if (y == '')
  		y = @y;
  	end
  	
  	if (@rtl)
  		x = @w - x;
  		angle = -@angle;
  	end
  	
  	y = (@h - y) * @k;
  	x *= @k;

  	# calculate elements of transformation matrix
  	tm = []
  	tm[0] = ::Math::cos(deg2rad(angle));
  	tm[1] = ::Math::sin(deg2rad(angle));
  	tm[2] = -tm[1];
  	tm[3] = tm[0];
  	tm[4] = x + tm[1] * y - tm[0] * x;
  	tm[5] = y - tm[0] * y - tm[1] * x;

  	# generate the transformation matrix
  	Transform(tm);
  end
    alias_method :rotate, :Rotate
  
  #
	# Starts a 2D tranformation saving current graphic state.
	# This function must be called before scaling, mirroring, translation, rotation and skewing.
	# Use StartTransform() before, and StopTransform() after the transformations to restore the normal behavior.
	#
	def StartTransform
		out('q');
	end
	  alias_method :start_transform, :StartTransform
	
	#
	# Stops a 2D tranformation restoring previous graphic state.
	# This function must be called after scaling, mirroring, translation, rotation and skewing.
	# Use StartTransform() before, and StopTransform() after the transformations to restore the normal behavior.
	#
	def StopTransform
		out('Q');
	end
	  alias_method :stop_transform, :StopTransform
	
  #
	# Apply graphic transformations.
	# @since 2.1.000 (2008-01-07)
	# @see StartTransform(), StopTransform()
	#
	def Transform(tm)
		x = out(sprintf('%.3f %.3f %.3f %.3f %.3f %.3f cm', tm[0], tm[1], tm[2], tm[3], tm[4], tm[5]));
	end
	  alias_method :transform, :Transform
		
	#
 	# Set header data.
	# @param string :ln header image logo
	# @param string :lw header image logo width in mm
	# @param string :ht string to print as title on document header
	# @param string :hs string to print on document header
	#
	def SetHeaderData(ln="", lw=0, ht="", hs="")
		@header_logo = ln || ""
		@header_logo_width = lw || 0
		@header_title = ht || ""
		@header_string = hs || ""
	end
	  alias_method :set_header_data, :SetHeaderData
	
	#
 	# Set header margin.
	# (minimum distance between header and top page margin)
	# @param int :hm distance in millimeters
	#
	def SetHeaderMargin(hm=10)
		@header_margin = hm;
	end
	  alias_method :set_header_margin, :SetHeaderMargin
	
	#
 	# Set footer margin.
	# (minimum distance between footer and bottom page margin)
	# @param int :fm distance in millimeters
	#
	def SetFooterMargin(fm=10)
		@footer_margin = fm;
	end
	  alias_method :set_footer_margin, :SetFooterMargin
	
	#
 	# Set a flag to print page header.
	# @param boolean :val set to true to print the page header (default), false otherwise. 
	#
	def SetPrintHeader(val=true)
		@print_header = val;
	end
	  alias_method :set_print_header, :SetPrintHeader
	
	#
 	# Set a flag to print page footer.
	# @param boolean :value set to true to print the page footer (default), false otherwise. 
	#
	def SetPrintFooter(val=true)
		@print_footer = val;
	end
	  alias_method :set_print_footer, :SetPrintFooter
	
	#
 	# This method is used to render the page header.
 	# It is automatically called by AddPage() and could be overwritten in your own inherited class.
	#
	def Header()
		if (@print_header)
			if (@original_l_margin.nil?)
				@original_l_margin = @l_margin;
			end
			if (@original_r_margin.nil?)
				@original_r_margin = @r_margin;
			end
			
			#set current position
			SetXY(@original_l_margin, @header_margin);
			
			if ((@header_logo) and (@header_logo != @@k_blank_image))
				Image(@header_logo, @original_l_margin, @header_margin, @header_logo_width);
			else
				@img_rb_y = GetY();
			end
			
			cell_height = ((@@k_cell_height_ratio * @header_font[2]) / @k).round(2)
			
			header_x = @original_l_margin + (@header_logo_width * 1.05); #set left margin for text data cell
			
			# header title
			SetFont(@header_font[0], 'B', @header_font[2] + 1);
			SetX(header_x);
			Cell(@header_width, cell_height, @header_title, 0, 1, 'L'); 
			
			# header string
			SetFont(@header_font[0], @header_font[1], @header_font[2]);
			SetX(header_x);
			MultiCell(@header_width, cell_height, @header_string, 0, 'L', 0);
			
			# print an ending header line
			if (@header_width)
				#set style for cell border
				SetLineWidth(0.3);
				SetDrawColor(0, 0, 0);
				SetY(1 + (@img_rb_y > GetY() ? @img_rb_y : GetY()));
				SetX(@original_l_margin);
				Cell(0, 0, '', 'T', 0, 'C'); 
			end
			
			#restore position
			SetXY(@original_l_margin, @t_margin);
		end
	end
	  alias_method :header, :Header
	
	#
 	# This method is used to render the page footer. 
 	# It is automatically called by AddPage() and could be overwritten in your own inherited class.
	#
	def Footer()
		if (@print_footer)
			
			if (@original_l_margin.nil?)
				@original_l_margin = @l_margin;
			end
			if (@original_r_margin.nil?)
				@original_r_margin = @r_margin;
			end
			
			#set font
			SetFont(@footer_font[0], @footer_font[1] , @footer_font[2]);
			#set style for cell border
			line_width = 0.3;
			SetLineWidth(line_width);
			SetDrawColor(0, 0, 0);
			
			footer_height = ((@@k_cell_height_ratio * @footer_font[2]) / @k).round; #footer height, was , 2)
			#get footer y position
			footer_y = @h - @footer_margin - footer_height;
			#set current position
			SetXY(@original_l_margin, footer_y); 
			
			#print document barcode
			if (@barcode)
				Ln();
				barcode_width = ((@w - @original_l_margin - @original_r_margin)).round; #max width
				writeBarcode(@original_l_margin, footer_y + line_width, barcode_width, footer_height - line_width, "C128B", false, false, 2, @barcode);
			end
			
			SetXY(@original_l_margin, footer_y); 
			
			#Print page number
			Cell(0, footer_height, @l['w_page'] + " " + PageNo().to_s + ' / {nb}', 'T', 0, 'R'); 
		end
	end
	  alias_method :footer, :Footer
	
	#
	# Returns the current page number.
	# @return int page number
	# @since 1.0
	# @see alias_nb_pages()
	#
	def PageNo()
		#Get current page number
		return @page;
	end
  alias_method :page_no, :PageNo

	#
	# Defines the color used for all drawing operations (lines, rectangles and cell borders). It can be expressed in RGB components or gray scale. The method can be called before the first page is created and the value is retained from page to page.
	# @param int :r If g et b are given, red component; if not, indicates the gray level. Value between 0 and 255
	# @param int :g Green component (between 0 and 255)
	# @param int :b Blue component (between 0 and 255)
	# @since 1.3
	# @see SetFillColor(), SetTextColor(), Line(), Rect(), Cell(), MultiCell()
	#
	def SetDrawColor(r, g=-1, b=-1)
		#Set color for all stroking operations
		if ((r==0 and g==0 and b==0) or g==-1)
			@draw_color=sprintf('%.3f G', r/255.0);
		else
			@draw_color=sprintf('%.3f %.3f %.3f RG', r/255.0, g/255.0, b/255.0);
		end
		if (@page>0)
			out(@draw_color);
		end
	end
  alias_method :set_draw_color, :SetDrawColor

	#
	# Defines the color used for all filling operations (filled rectangles and cell backgrounds). It can be expressed in RGB components or gray scale. The method can be called before the first page is created and the value is retained from page to page.
	# @param int :r If g et b are given, red component; if not, indicates the gray level. Value between 0 and 255
	# @param int :g Green component (between 0 and 255)
	# @param int :b Blue component (between 0 and 255)
	# @param boolean :storeprev if true stores the RGB array on :prevfill_color variable.
	# @since 1.3
	# @see SetDrawColor(), SetTextColor(), Rect(), Cell(), MultiCell()
	#
	def SetFillColor(r, g=-1, b=-1, storeprev=false)
		#Set color for all filling operations
		if ((r==0 and g==0 and b==0) or g==-1)
			@fill_color=sprintf('%.3f g', r/255.0);
		else
			@fill_color=sprintf('%.3f %.3f %.3f rg', r/255.0, g/255.0, b/255.0);
		end
		@color_flag=(@fill_color!=@text_color);
		if (@page>0)
			out(@fill_color);
		end
		if (storeprev)
			# store color as previous value
			@prevfill_color = [r, g, b]
		end
	end
  alias_method :set_fill_color, :SetFillColor

  # This hasn't been ported from tcpdf, it's a variation on SetTextColor for setting cmyk colors
	def SetCmykFillColor(c, m, y, k, storeprev=false)
		#Set color for all filling operations
		@fill_color=sprintf('%.3f %.3f %.3f %.3f k', c, m, y, k);
		@color_flag=(@fill_color!=@text_color);
		if (storeprev)
			# store color as previous value
			@prevtext_color = [c, m, y, k]
		end
		if (@page>0)
			out(@fill_color);
		end
	end
  alias_method :set_cmyk_fill_color, :SetCmykFillColor

	#
	# Defines the color used for text. It can be expressed in RGB components or gray scale. The method can be called before the first page is created and the value is retained from page to page.
	# @param int :r If g et b are given, red component; if not, indicates the gray level. Value between 0 and 255
	# @param int :g Green component (between 0 and 255)
	# @param int :b Blue component (between 0 and 255)
	# @param boolean :storeprev if true stores the RGB array on :prevtext_color variable.
	# @since 1.3
	# @see SetDrawColor(), SetFillColor(), Text(), Cell(), MultiCell()
	#
	def SetTextColor(r, g=-1, b=-1, storeprev=false)
		#Set color for text
		if ((r==0 and :g==0 and :b==0) or :g==-1)
			@text_color=sprintf('%.3f g', r/255.0);
		else
			@text_color=sprintf('%.3f %.3f %.3f rg', r/255.0, g/255.0, b/255.0);
		end
		@color_flag=(@fill_color!=@text_color);
		if (storeprev)
			# store color as previous value
			@prevtext_color = [r, g, b]
		end
	end
  alias_method :set_text_color, :SetTextColor

  # This hasn't been ported from tcpdf, it's a variation on SetTextColor for setting cmyk colors
	def SetCmykTextColor(c, m, y, k, storeprev=false)
		#Set color for text
		@text_color=sprintf('%.3f %.3f %.3f %.3f k', c, m, y, k);
		@color_flag=(@fill_color!=@text_color);
		if (storeprev)
			# store color as previous value
			@prevtext_color = [c, m, y, k]
		end
	end
  alias_method :set_cmyk_text_color, :SetCmykTextColor
  
	#
	# Returns the length of a string in user unit. A font must be selected.<br>
	# Support UTF-8 Unicode [Nicola Asuni, 2005-01-02]
	# @param string :s The string whose length is to be computed
	# @return int
	# @since 1.2
	#
	def GetStringWidth(s)
		#Get width of a string in the current font
		s = s.to_s;
		cw = @current_font['cw']
		w = 0;
		if (@is_unicode)
      unicode = UTF8StringToArray(s);
      unicode.each do |char|
				if (!cw[char].nil?)
					w += cw[char];
				# This should not happen. UTF8StringToArray should guarentee the array is ascii values.
        # elsif (c!cw[char[0]].nil?)
        #   w += cw[char[0]];
        #         elsif (!cw[char.chr].nil?)
        #           w += cw[char.chr];
				elsif (!@current_font['desc']['MissingWidth'].nil?)
					w += @current_font['desc']['MissingWidth']; # set default size
				else
					w += 500;
				end
			end
		else
		  s.each_byte do |c|
				if cw[c.chr]
					w += cw[c.chr];
				elsif cw[?c.chr]
					w += cw[?c.chr]
				end
			end
		end
		return (w * @font_size / 1000.0);
	end
  alias_method :get_string_width, :GetStringWidth

	#
	# Defines the line width. By default, the value equals 0.2 mm. The method can be called before the first page is created and the value is retained from page to page.
	# @param float :width The width.
	# @since 1.0
	# @see Line(), Rect(), Cell(), MultiCell()
	#
	def SetLineWidth(width)
		#Set line width
		@line_width = width;
		if (@page>0)
			out(sprintf('%.2f w', width*@k));
		end
	end
  alias_method :set_line_width, :SetLineWidth

	#
	# Draws a line between two points.
	# @param float :x1 Abscissa of first point
	# @param float :y1 Ordinate of first point
	# @param float :x2 Abscissa of second point
	# @param float :y2 Ordinate of second point
	# @since 1.0
	# @see SetLineWidth(), SetDrawColor()
	#
	def Line(x1, y1, x2, y2)
		#Draw a line
		out(sprintf('%.2f %.2f m %.2f %.2f l S', x1 * @k, (@h - y1) * @k, x2 * @k, (@h - y2) * @k));
	end
  alias_method :line, :Line

  def Circle(mid_x, mid_y, radius, style='')
    mid_y = (@h-mid_y)*@k
    out(sprintf("q\n")) # postscript content in pdf
    # init line type etc. with /GSD gs G g (grey) RG rg (RGB) w=line witdh etc. 
    out(sprintf("1 j\n")) # line join
    # translate ("move") circle to mid_y, mid_y
    out(sprintf("1 0 0 1 %f %f cm", mid_x, mid_y))
    kappa = 0.5522847498307933984022516322796
    # Quadrant 1 
    x_s = 0.0 # 12 o'clock 
    y_s = 0.0 + radius
    x_e = 0.0 + radius # 3 o'clock 
    y_e = 0.0
    out(sprintf("%f %f m\n", x_s, y_s)) # move to 12 o'clock 
    # cubic bezier control point 1, start height and kappa * radius to the right 
    bx_e1 = x_s + (radius * kappa)
    by_e1 = y_s
    # cubic bezier control point 2, end and kappa * radius above 
    bx_e2 = x_e
    by_e2 = y_e + (radius * kappa)
    # draw cubic bezier from current point to x_e/y_e with bx_e1/by_e1 and bx_e2/by_e2 as bezier control points
    out(sprintf("%f %f %f %f %f %f c\n", bx_e1, by_e1, bx_e2, by_e2, x_e, y_e))
    # Quadrant 2 
    x_s = x_e 
    y_s = y_e # 3 o'clock 
    x_e = 0.0 
    y_e = 0.0 - radius # 6 o'clock 
    bx_e1 = x_s # cubic bezier point 1 
    by_e1 = y_s - (radius * kappa)
    bx_e2 = x_e + (radius * kappa) # cubic bezier point 2 
    by_e2 = y_e
    out(sprintf("%f %f %f %f %f %f c\n", bx_e1, by_e1, bx_e2, by_e2, x_e, y_e))
    # Quadrant 3 
    x_s = x_e 
    y_s = y_e # 6 o'clock 
    x_e = 0.0 - radius
    y_e = 0.0 # 9 o'clock 
    bx_e1 = x_s - (radius * kappa) # cubic bezier point 1 
    by_e1 = y_s
    bx_e2 = x_e # cubic bezier point 2 
    by_e2 = y_e - (radius * kappa)
    out(sprintf("%f %f %f %f %f %f c\n", bx_e1, by_e1, bx_e2, by_e2, x_e, y_e))
    # Quadrant 4 
    x_s = x_e 
    y_s = y_e # 9 o'clock 
    x_e = 0.0 
    y_e = 0.0 + radius # 12 o'clock 
    bx_e1 = x_s # cubic bezier point 1 
    by_e1 = y_s + (radius * kappa)
    bx_e2 = x_e - (radius * kappa) # cubic bezier point 2 
    by_e2 = y_e
    out(sprintf("%f %f %f %f %f %f c\n", bx_e1, by_e1, bx_e2, by_e2, x_e, y_e))
    if style=='F'
        op='f'
    elsif style=='FD' or style=='DF'
        op='b'
    else
        op='s'
    end
    out(sprintf("#{op}\n")) # stroke circle, do not fill and close path 
    # for filling etc. b, b*, f, f*
    out(sprintf("Q\n")) # finish postscript in PDF
  end
  alias_method :circle, :Circle

	#
	# Outputs a rectangle. It can be drawn (border only), filled (with no border) or both.
	# @param float :x Abscissa of upper-left corner
	# @param float :y Ordinate of upper-left corner
	# @param float :w Width
	# @param float :h Height
	# @param string :style Style of rendering. Possible values are:<ul><li>D or empty string: draw (default)</li><li>F: fill</li><li>DF or FD: draw and fill</li></ul>
	# @since 1.0
	# @see SetLineWidth(), SetDrawColor(), SetFillColor()
	#
	def Rect(x, y, w, h, style='')
		#Draw a rectangle
		if (style=='F')
			op='f';
		elsif (style=='FD' or style=='DF')
			op='B';
		else
			op='S';
		end
		out(sprintf('%.2f %.2f %.2f %.2f re %s', x * @k, (@h - y) * @k, w * @k, -h * @k, op));
	end
  alias_method :rect, :Rect

	#
	# Imports a TrueType or Type1 font and makes it available. It is necessary to generate a font definition file first with the makefont.rb utility. The definition file (and the font file itself when embedding) must be present either in the current directory or in the one indicated by FPDF_FONTPATH if the constant is defined. If it could not be found, the error "Could not include font definition file" is generated.
	# Support UTF-8 Unicode [Nicola Asuni, 2005-01-02].
	# <b>Example</b>:<br />
	# <pre>
	# :pdf->AddFont('Comic','I');
	# # is equivalent to:
	# :pdf->AddFont('Comic','I','comici.rb');
	# </pre>
	# @param string :family Font family. The name can be chosen arbitrarily. If it is a standard family name, it will override the corresponding font.
	# @param string :style Font style. Possible values are (case insensitive):<ul><li>empty string: regular (default)</li><li>B: bold</li><li>I: italic</li><li>BI or IB: bold italic</li></ul>
	# @param string :file The font definition file. By default, the name is built from the family and style, in lower case with no space.
	# @since 1.5
	# @see SetFont()
	#
	def AddFont(family, style='', file='')
		if (family.empty?)
			return;
		end

		#Add a TrueType or Type1 font
		family = family.downcase
		if ((!@is_unicode) and (family == 'arial'))
			family = 'helvetica';
		end

		style=style.upcase
		style=style.gsub('U','');
		style=style.gsub('D','');
		if (style == 'IB')
			style = 'BI';
		end

		fontkey = family + style;
		# check if the font has been already added
		if !@fonts[fontkey].nil?
			return;
		end

		if (file=='')
			file = family.gsub(' ', '') + style.downcase + '.rb';
		end
		font_file_name = getfontpath(file)
		if (font_file_name.nil?)
			# try to load the basic file without styles
			file = family.gsub(' ', '') + '.rb';
  		font_file_name = getfontpath(file)
		end
    if font_file_name.nil?
			Error("Could not find font #{file}.")
    end
		require(getfontpath(file))
		font_desc = TCPDFFontDescriptor.font(file)

		if (font_desc[:name].nil? and @@fpdf_charwidths.nil?)
			Error('Could not include font definition file');
		end

		i = @fonts.length+1;
		if (@is_unicode)
			@fonts[fontkey] = {'i' => i, 'type' => font_desc[:type], 'name' => font_desc[:name], 'desc' => font_desc[:desc], 'up' => font_desc[:up], 'ut' => font_desc[:ut], 'cw' => font_desc[:cw], 'enc' => font_desc[:enc], 'file' => font_desc[:file], 'ctg' => font_desc[:ctg], 'cMap' => font_desc[:cMap], 'registry' => font_desc[:registry]}
			@@fpdf_charwidths[fontkey] = font_desc[:cw];
		else
			@fonts[fontkey]={'i' => i, 'type'=>'core', 'name'=>@core_fonts[fontkey], 'up'=>-100, 'ut'=>50, 'cw' => font_desc[:cw]}
			@@fpdf_charwidths[fontkey] = font_desc[:cw];
		end

		if (!font_desc[:diff].nil? and (!font_desc[:diff].empty?))
			#Search existing encodings
			d=0;
			nb=@diffs.length;
			1.upto(nb) do |i|
				if (@diffs[i]== font_desc[:diff])
					d = i;
					break;
				end
			end
			if (d==0)
				d = nb+1;
				@diffs[d] = font_desc[:diff];
			end
			@fonts[fontkey]['diff'] = d;
		end
		if (font_desc[:file] and font_desc[:file].length > 0)
			if (font_desc[:type] == "TrueType") or (font_desc[:type] == "TrueTypeUnicode")
				@font_files[font_desc[:file]] = {'length1' => font_desc[:originalsize]}
			else
				@font_files[font_desc[:file]] = {'length1' => font_desc[:size1], 'length2' => font_desc[:size2]}
			end
		end
	end
  alias_method :add_font, :AddFont

	#
	# Sets the font used to print character strings. It is mandatory to call this method at least once before printing text or the resulting document would not be valid.
	# The font can be either a standard one or a font added via the AddFont() method. Standard fonts use Windows encoding cp1252 (Western Europe).
	# The method can be called before the first page is created and the font is retained from page to page.
	# If you just wish to change the current font size, it is simpler to call SetFontSize().
	# Note: for the standard fonts, the font metric files must be accessible. There are three possibilities for this:<ul><li>They are in the current directory (the one where the running script lies)</li><li>They are in one of the directories defined by the include_path parameter</li><li>They are in the directory defined by the FPDF_FONTPATH constant</li></ul><br />
	# Example for the last case (note the trailing slash):<br />
	# <pre>
	# define('FPDF_FONTPATH','/home/www/font/');
	# require('tcpdf.rb');
	#
	# #Times regular 12
	# :pdf->SetFont('Times');
	# #Arial bold 14
	# :pdf->SetFont('Arial','B',14);
	# #Removes bold
	# :pdf->SetFont('');
	# #Times bold, italic and underlined 14
	# :pdf->SetFont('Times','BIUD');
	# </pre><br />
	# If the file corresponding to the requested font is not found, the error "Could not include font metric file" is generated.
	# @param string :family Family font. It can be either a name defined by AddFont() or one of the standard families (case insensitive):<ul><li>Courier (fixed-width)</li><li>Helvetica or Arial (synonymous; sans serif)</li><li>Times (serif)</li><li>Symbol (symbolic)</li><li>ZapfDingbats (symbolic)</li></ul>It is also possible to pass an empty string. In that case, the current family is retained.
	# @param string :style Font style. Possible values are (case insensitive):<ul><li>empty string: regular</li><li>B: bold</li><li>I: italic</li><li>U: underline</li></ul>or any combination. The default value is regular. Bold and italic styles do not apply to Symbol and ZapfDingbats
	# @param float :size Font size in points. The default value is the current size. If no size has been specified since the beginning of the document, the value taken is 12
	# @since 1.0
	# @see AddFont(), SetFontSize(), Cell(), MultiCell(), Write()
	#
	def SetFont(family, style='', size=0)
		# save previous values
		@prevfont_family = @font_family;
		@prevfont_style = @font_style;

		family=family.downcase;
		if (family=='')
			family=@font_family;
		end
		if ((!@is_unicode) and (family == 'arial'))
			family = 'helvetica';
		elsif ((family=="symbol") or (family=="zapfdingbats"))
			style='';
		end
		
		style=style.upcase;

		if (style.include?('U'))
			@underline=true;
			style= style.gsub('U','');
		else
			@underline=false;
		end
		if (style.include?('D'))
			@deleted=true;
			style= style.gsub('D','');
		else
			@deleted=false;
		end
		if (style=='IB')
			style='BI';
		end
		if (size==0)
			size=@font_size_pt;
		end

		# try to add font (if not already added)
		AddFont(family, style);
		
		#Test if font is already selected
		if ((@font_family == family) and (@font_style == style) and (@font_size_pt == size))
			return;
		end
		
		fontkey = family + style;
		style = '' if (@fonts[fontkey].nil? and !@fonts[family].nil?)
    
		#Test if used for the first time
		if (@fonts[fontkey].nil?)
			#Check if one of the standard fonts
			if (!@core_fonts[fontkey].nil?)
				if @@fpdf_charwidths[fontkey].nil?
					#Load metric file
					file = family;
					if ((family!='symbol') and (family!='zapfdingbats'))
						file += style.downcase;
					end
					if (getfontpath(file + '.rb').nil?)
						# try to load the basic file without styles
						file = family;
						fontkey = family;
					end
					require(getfontpath(file + '.rb'));
      		font_desc = TCPDFFontDescriptor.font(file)
					if ((@is_unicode and ctg.nil?) or ((!@is_unicode) and (@@fpdf_charwidths[fontkey].nil?)) )
						Error("Could not include font metric file [" + fontkey + "]: " + getfontpath(file + ".rb"));
					end
				end
				i = @fonts.length + 1;

				if (@is_unicode)
					@fonts[fontkey] = {'i' => i, 'type' => font_desc[:type], 'name' => font_desc[:name], 'desc' => font_desc[:desc], 'up' => font_desc[:up], 'ut' => font_desc[:ut], 'cw' => font_desc[:cw], 'enc' => font_desc[:enc], 'file' => font_desc[:file], 'ctg' => font_desc[:ctg]}
					@@fpdf_charwidths[fontkey] = font_desc[:cw];
				else
					@fonts[fontkey] = {'i' => i, 'type'=>'core', 'name'=>@core_fonts[fontkey], 'up'=>-100, 'ut'=>50, 'cw' => font_desc[:cw]}
					@@fpdf_charwidths[fontkey] = font_desc[:cw];
				end
			else
				Error('Undefined font: ' + family + ' ' + style);
			end
		end
		#Select it
		@font_family = family;
		@font_style = style;
		@font_size_pt = size;
		@font_size = size / @k;
		@current_font = @fonts[fontkey]; # was & may need deep copy?
		if (@page>0)
			out(sprintf('BT /F%d %.2f Tf ET', @current_font['i'], @font_size_pt));
		end
	end
  alias_method :set_font, :SetFont

	#
	# Defines the size of the current font.
	# @param float :size The size (in points)
	# @since 1.0
	# @see SetFont()
	#
	def SetFontSize(size)
		#Set font size in points
		if (@font_size_pt== size)
			return;
		end
		@font_size_pt = size;
		@font_size = size.to_f / @k;
		if (@page > 0)
			out(sprintf('BT /F%d %.2f Tf ET', @current_font['i'], @font_size_pt));
		end
	end
  alias_method :set_font_size, :SetFontSize

	#
	# Creates a new internal link and returns its identifier. An internal link is a clickable area which directs to another place within the document.<br />
	# The identifier can then be passed to Cell(), Write(), Image() or Link(). The destination is defined with SetLink().
	# @since 1.5
	# @see Cell(), Write(), Image(), Link(), SetLink()
	#
	def AddLink()
		#Create a new internal link
		n=@links.length+1;
		@links[n]=[0,0];
		return n;
	end
  alias_method :add_link, :AddLink

	#
	# Defines the page and position a link points to
	# @param int :link The link identifier returned by AddLink()
	# @param float :y Ordinate of target position; -1 indicates the current position. The default value is 0 (top of page)
	# @param int :page Number of target page; -1 indicates the current page. This is the default value
	# @since 1.5
	# @see AddLink()
	#
	def SetLink(link, y=0, page=-1)
		#Set destination of internal link
		if (y==-1)
			y=@y;
		end
		if (page==-1)
			page=@page;
		end
		@links[link] = [page, y]
	end
  alias_method :set_link, :SetLink

	#
	# Puts a link on a rectangular area of the page. Text or image links are generally put via Cell(), Write() or Image(), but this method can be useful for instance to define a clickable area inside an image.
	# @param float :x Abscissa of the upper-left corner of the rectangle
	# @param float :y Ordinate of the upper-left corner of the rectangle
	# @param float :w Width of the rectangle
	# @param float :h Height of the rectangle
	# @param mixed :link URL or identifier returned by AddLink()
	# @since 1.5
	# @see AddLink(), Cell(), Write(), Image()
	#
	def Link(x, y, w, h, link)
		#Put a link on the page
    @page_links ||= Array.new
    @page_links[@page] ||= Array.new
    @page_links[@page].push([x * @k, @h_pt - y * @k, w * @k, h*@k, link]);
	end
  alias_method :link, :Link

	#
	# Prints a character string. The origin is on the left of the first charcter, on the baseline. This method allows to place a string precisely on the page, but it is usually easier to use Cell(), MultiCell() or Write() which are the standard methods to print text.
	# @param float :x Abscissa of the origin
	# @param float :y Ordinate of the origin
	# @param string :txt String to print
	# @since 1.0
	# @see SetFont(), SetTextColor(), Cell(), MultiCell(), Write()
	#
	def Text(x, y, txt)
		#Output a string
		s=sprintf('BT %.2f %.2f Td (%s) Tj ET', x * @k, (@h-y) * @k, escapetext(txt));
		if (@underline and (txt!=''))
			s += ' ' + dolinetxt(x, y, txt);
		end
		if (@color_flag)
			s='q ' + @text_color + ' ' + s + ' Q';
		end
		out(s);
	end
  alias_method :text, :Text

	#
	# Whenever a page break condition is met, the method is called, and the break is issued or not depending on the returned value. The default implementation returns a value according to the mode selected by SetAutoPageBreak().<br />
	# This method is called automatically and should not be called directly by the application.<br />
	# <b>Example:</b><br />
	# The method is overriden in an inherited class in order to obtain a 3 column layout:<br />
	# <pre>
	# class PDF extends TCPDF {
	# 	var :col=0;
	#
	# 	def SetCol(col)
	# 		#Move position to a column
	# 		@col = col;
	# 		:x=10+:col*65;
	# 		SetLeftMargin(x);
	# 		SetX(x);
	# 	end
	#
	# 	def AcceptPageBreak()
	# 		if (@col<2)
	# 			#Go to next column
	# 			SetCol(@col+1);
	# 			SetY(10);
	# 			return false;
	# 		end
	# 		else
	# 			#Go back to first column and issue page break
	# 			SetCol(0);
	# 			return true;
	# 		end
	# 	end
	# }
	#
	# :pdf=new PDF();
	# :pdf->Open();
	# :pdf->AddPage();
	# :pdf->SetFont('Arial','',12);
	# for(i=1;:i<=300;:i++)
	#     :pdf->Cell(0,5,"Line :i",0,1);
	# }
	# :pdf->Output();
	# </pre>
	# @return boolean
	# @since 1.4
	# @see SetAutoPageBreak()
	#
	def AcceptPageBreak()
		#Accept automatic page break or not
		return @auto_page_break;
	end
  alias_method :accept_page_break, :AcceptPageBreak

  def BreakThePage?(h)
		if ((@y + h) > @page_break_trigger and !@in_footer and AcceptPageBreak())
      true
    else
      false
    end
  end
  alias_method :break_the_page?, :BreakThePage?
	#
	# Prints a cell (rectangular area) with optional borders, background color and character string. The upper-left corner of the cell corresponds to the current position. The text can be aligned or centered. After the call, the current position moves to the right or to the next line. It is possible to put a link on the text.<br />
	# If automatic page breaking is enabled and the cell goes beyond the limit, a page break is done before outputting.
	# @param float :w Cell width. If 0, the cell extends up to the right margin.
	# @param float :h Cell height. Default value: 0.
	# @param string :txt String to print. Default value: empty string.
	# @param mixed :border Indicates if borders must be drawn around the cell. The value can be either a number:<ul><li>0: no border (default)</li><li>1: frame</li></ul>or a string containing some or all of the following characters (in any order):<ul><li>L: left</li><li>T: top</li><li>R: right</li><li>B: bottom</li></ul>
	# @param int :ln Indicates where the current position should go after the call. Possible values are:<ul><li>0: to the right</li><li>1: to the beginning of the next line</li><li>2: below</li></ul>
	# Putting 1 is equivalent to putting 0 and calling Ln() just after. Default value: 0.
	# @param string :align Allows to center or align the text. Possible values are:<ul><li>L or empty string: left align (default value)</li><li>C: center</li><li>R: right align</li></ul>
	# @param int :fill Indicates if the cell background must be painted (1) or transparent (0). Default value: 0.
	# @param mixed :link URL or identifier returned by AddLink().
	# @since 1.0
	# @see SetFont(), SetDrawColor(), SetFillColor(), SetTextColor(), SetLineWidth(), AddLink(), Ln(), MultiCell(), Write(), SetAutoPageBreak()
	#
	def Cell(w, h=0, txt='', border=0, ln=0, align='', fill=0, link=nil)
		#Output a cell
		k=@k;
		if ((@y + h) > @page_break_trigger and !@in_footer and AcceptPageBreak())
			#Automatic page break
			if @pages[@page+1].nil?
				x = @x;
				ws = @ws;
				if (ws > 0)
					@ws = 0;
					out('0 Tw');
				end
				AddPage(@cur_orientation);
				@x = x;
				if (ws > 0)
					@ws = ws;
					out(sprintf('%.3f Tw', ws * k));
				end
			else
				@page += 1;
				@y=@t_margin;
			end
		end

		if (w == 0)
			w = @w - @r_margin - @x;
		end
		s = '';
		if ((fill.to_i == 1) or (border.to_i == 1))
			if (fill.to_i == 1)
				op = (border.to_i == 1) ? 'B' : 'f';
			else
				op = 'S';
			end
			s = sprintf('%.2f %.2f %.2f %.2f re %s ', @x * k, (@h - @y) * k, w * k, -h * k, op);
		end
		if (border.is_a?(String))
			x=@x;
			y=@y;
			if (border.include?('L'))
				s<<sprintf('%.2f %.2f m %.2f %.2f l S ', x*k,(@h-y)*k, x*k,(@h-(y+h))*k);
			end
			if (border.include?('T'))
				s<<sprintf('%.2f %.2f m %.2f %.2f l S ', x*k,(@h-y)*k,(x+w)*k,(@h-y)*k);
			end
			if (border.include?('R'))
				s<<sprintf('%.2f %.2f m %.2f %.2f l S ',(x+w)*k,(@h-y)*k,(x+w)*k,(@h-(y+h))*k);
			end
			if (border.include?('B'))
				s<<sprintf('%.2f %.2f m %.2f %.2f l S ', x*k,(@h-(y+h))*k,(x+w)*k,(@h-(y+h))*k);
			end
		end
		if (txt != '')
			width = GetStringWidth(txt);
			if (align == 'R' || align == 'right')
				dx = w - @c_margin - width;
			elsif (align=='C' || align == 'center')
				dx = (w - width)/2;
			else
				dx = @c_margin;
			end
			if (@color_flag)
				s << 'q ' + @text_color + ' ';
			end
			txt2 = escapetext(txt);
			s<<sprintf('BT %.2f %.2f Td (%s) Tj ET', (@x + dx) * k, (@h - (@y + 0.5 * h + 0.3 * @font_size)) * k, txt2);
			if (@underline)
				s<<' ' + dolinetxt(@x + dx, @y + 0.5 * h + 0.3 * @font_size, txt);
			end
			if (@deleted)
				s<<' ' + dolinetxt(@x + dx, @y + 0.3 * h + 0.2 * @font_size, txt);
			end
			if (@color_flag)
				s<<' Q';
			end
			if link && !link.empty?
				Link(@x + dx, @y + 0.5 * h - 0.5 * @font_size, width, @font_size, link);
			end
		end
		if (s)
			out(s);
		end
		@lasth = h;
		if (ln.to_i>0)
			# Go to next line
			@y += h;
			if (ln == 1)
				@x = @l_margin;
			end
		else
			@x += w;
		end
	end
  alias_method :cell, :Cell

	#
	# This method allows printing text with line breaks. They can be automatic (as soon as the text reaches the right border of the cell) or explicit (via the \n character). As many cells as necessary are output, one below the other.<br />
	# Text can be aligned, centered or justified. The cell block can be framed and the background painted.
	# @param float :w Width of cells. If 0, they extend up to the right margin of the page.
	# @param float :h Height of cells.
	# @param string :txt String to print
	# @param mixed :border Indicates if borders must be drawn around the cell block. The value can be either a number:<ul><li>0: no border (default)</li><li>1: frame</li></ul>or a string containing some or all of the following characters (in any order):<ul><li>L: left</li><li>T: top</li><li>R: right</li><li>B: bottom</li></ul>
	# @param string :align Allows to center or align the text. Possible values are:<ul><li>L or empty string: left align</li><li>C: center</li><li>R: right align</li><li>J: justification (default value)</li></ul>
	# @param int :fill Indicates if the cell background must be painted (1) or transparent (0). Default value: 0.
	# @param int :ln Indicates where the current position should go after the call. Possible values are:<ul><li>0: to the right</li><li>1: to the beginning of the next line [DEFAULT]</li><li>2: below</li></ul>
	# @since 1.3
	# @see SetFont(), SetDrawColor(), SetFillColor(), SetTextColor(), SetLineWidth(), Cell(), Write(), SetAutoPageBreak()
	#
	def MultiCell(w, h, txt, border=0, align='J', fill=0, ln=1)
		
		# save current position
		prevx = @x;
		prevy = @y;
		prevpage = @page;
		 
		#Output text with automatic or explicit line breaks

		if (w == 0)
			w = @w - @r_margin - @x;
		end

		wmax = (w - 2 * @c_margin);

		s = txt.gsub("\r", ''); # remove carriage returns
		nb = s.length;

		b=0;
		if (border)
			if (border==1)
				border='LTRB';
				b='LRT';
				b2='LR';
			elsif border.is_a?(String)
				b2='';
				if (border.include?('L'))
					b2<<'L';
				end
				if (border.include?('R'))
					b2<<'R';
				end
				b=(border.include?('T')) ? b2 + 'T' : b2;
			end
		end
		sep=-1;
		to_index=0;
		from_j=0;
		l=0;
		ns=0;
		nl=1;
		
		while to_index < nb
			#Get next character
			c = s[to_index];
			if c == "\n"[0]
				#Explicit line break
				if @ws > 0
					@ws = 0
					out('0 Tw')
				end
        #Ed Moss - change begin            
        end_i = to_index == 0 ? 0 : to_index - 1
        # Changed from s[from_j..to_index] to fix bug reported by Hans Allis.
        from_j = to_index == 0 ? 1 : from_j 
        Cell(w, h, s[from_j..end_i], b, 2, align, fill) 
        #change end
				to_index += 1
				sep=-1
        from_j=to_index
				l=0
				ns=0
				nl += 1
				b = b2 if border and nl==2
				next
			end
			if (c == " "[0])
				sep = to_index;
				ls = l;
				ns += 1;
			end

			l = GetStringWidth(s[from_j, to_index - from_j + 1]);

			if (l > wmax)
				#Automatic line break
				if (sep == -1)
					if (to_index == from_j)
						to_index += 1;
					end
					if (@ws > 0)
						@ws = 0;
						out('0 Tw');
					end
          Cell(w, h, s[from_j..to_index-1], b, 2, align, fill) # my FPDF version
				else
					if (align=='J' || align=='justify' || align=='justified')
						@ws = (ns>1) ? (wmax-ls)/(ns-1) : 0;
						out(sprintf('%.3f Tw', @ws * @k));
					end
					Cell(w, h, s[from_j..sep], b, 2, align, fill);
					to_index = sep + 1;
				end
				sep=-1;
				from_j = to_index;
				l=0;
				ns=0;
				nl += 1;
				if (border and (nl==2))
					b = b2;
				end
			else
				to_index += 1;
			end
		end
		#Last chunk
		if (@ws>0)
			@ws=0;
			out('0 Tw');
		end
		if (border.is_a?(String) and border.include?('B'))
			b<<'B';
		end
		Cell(w, h, s[from_j, to_index-from_j], b, 2, align, fill);
		
		# move cursor to specified position
		# since 2007-03-03
		if (ln == 1)
			# go to the beginning of the next line
			@x = @l_margin;
		elsif (ln == 0)
			# go to the top-right of the cell
			@page = prevpage;
			@y = prevy;
			@x = prevx + w;
		elsif (ln == 2)
			# go to the bottom-left of the cell
			@x = prevx;
		end
	end
  alias_method :multi_cell, :MultiCell

	#
	# This method prints text from the current position. When the right margin is reached (or the \n character is met) a line break occurs and text continues from the left margin. Upon method exit, the current position is left just at the end of the text. It is possible to put a link on the text.<br />
	# <b>Example:</b><br />
	# <pre>
	# #Begin with regular font
	# :pdf->SetFont('Arial','',14);
	# :pdf->Write(5,'Visit ');
	# #Then put a blue underlined link
	# :pdf->SetTextColor(0,0,255);
	# :pdf->SetFont('','U');
	# :pdf->Write(5,'www.tecnick.com','http://www.tecnick.com');
	# </pre>
	# @param float :h Line height
	# @param string :txt String to print
	# @param mixed :link URL or identifier returned by AddLink()
	# @param int :fill Indicates if the background must be painted (1) or transparent (0). Default value: 0.
	# @since 1.5
	# @see SetFont(), SetTextColor(), AddLink(), MultiCell(), SetAutoPageBreak()
	#
	def Write(h, txt, link=nil, fill=0)

		#Output text in flowing mode
		w = @w - @r_margin - @x;
		wmax = (w - 2 * @c_margin);
    
		s = txt.gsub("\r", '');
		nb = s.length;

		# handle single space character
		if ((nb==1) and (s == " "))
			@x += GetStringWidth(s);
			return;
		end

		sep=-1;
		i=0;
		j=0;
		l=0;
		nl=1;
		while(i<nb)
			#Get next character
			c = s[i];
			if (c == "\n"[0])
				#Explicit line break
				Cell(w, h, s[j,i-j], 0, 2, '', fill, link);
				i += 1;
				sep = -1;
				j = i;
				l = 0;
				if (nl == 1)
					@x = @l_margin;
					w = @w - @r_margin - @x;
					wmax = (w - 2 * @c_margin);
				end
				nl += 1;
				next
			end
			if (c == " "[0])
				sep= i;
			end
			l = GetStringWidth(s[j, i - j + 1]);
			if (l > wmax)
				#Automatic line break (word wrapping)
				if (sep == -1)
					if (@x > @l_margin)
						#Move to next line
						@x = @l_margin;
						@y += h;
						w=@w - @r_margin - @x;
						wmax=(w - 2 * @c_margin);
						i += 1
						nl += 1
						next
					end
					if (i == j)
						i += 1
					end
					Cell(w, h, s[j, (i-1)], 0, 2, '', fill, link);
				else
					Cell(w, h, s[j, (sep-j)], 0, 2, '', fill, link);
					i = sep+1;
				end
				sep = -1;
				j = i;
				l = 0;
				if (nl==1)
					@x = @l_margin;
					w = @w - @r_margin - @x;
					wmax = (w - 2 * @c_margin);
				end
				nl += 1;
			else
				i += 1;
			end
		end
		#Last chunk
		if (i != j)
			Cell(GetStringWidth(s[j..i]), h, s[j..i], 0, 0, '', fill, link);
		end
	end
  alias_method :write, :Write

	#
	# Puts an image in the page. The upper-left corner must be given. The dimensions can be specified in different ways:<ul><li>explicit width and height (expressed in user unit)</li><li>one explicit dimension, the other being calculated automatically in order to keep the original proportions</li><li>no explicit dimension, in which case the image is put at 72 dpi</li></ul>
	# Supported formats are JPEG and PNG.
	# For JPEG, all flavors are allowed:<ul><li>gray scales</li><li>true colors (24 bits)</li><li>CMYK (32 bits)</li></ul>
	# For PNG, are allowed:<ul><li>gray scales on at most 8 bits (256 levels)</li><li>indexed colors</li><li>true colors (24 bits)</li></ul>
	# but are not supported:<ul><li>Interlacing</li><li>Alpha channel</li></ul>
	# If a transparent color is defined, it will be taken into account (but will be only interpreted by Acrobat 4 and above).<br />
	# The format can be specified explicitly or inferred from the file extension.<br />
	# It is possible to put a link on the image.<br />
	# Remark: if an image is used several times, only one copy will be embedded in the file.<br />
	# @param string :file Name of the file containing the image.
	# @param float :x Abscissa of the upper-left corner.
	# @param float :y Ordinate of the upper-left corner.
	# @param float :w Width of the image in the page. If not specified or equal to zero, it is automatically calculated.
	# @param float :h Height of the image in the page. If not specified or equal to zero, it is automatically calculated.
	# @param string :type Image format. Possible values are (case insensitive): JPG, JPEG, PNG. If not specified, the type is inferred from the file extension.
	# @param mixed :link URL or identifier returned by AddLink().
	# @since 1.1
	# @see AddLink()
	#
	def Image(file, x, y, w=0, h=0, type='', link=nil)
		#Put an image on the page
		if (@images[file].nil?)
			#First use of image, get info
			if (type == '')
				pos = File::basename(file).rindex('.');
				if (pos.nil? or pos == 0)
					Error('Image file has no extension and no type was specified: ' + file);
				end
				pos = file.rindex('.');
				type = file[pos+1..-1];
			end
			type.downcase!
			if (type == 'jpg' or type == 'jpeg')
				info=parsejpg(file);
			elsif (type == 'png' or type == 'gif')
				img = Magick::ImageList.new(file)
				img.format = "PNG"     # convert to PNG from gif 
				img.opacity = 0        # PNG alpha channel delete
				File.open( @@k_path_cache + File::basename(file), 'w'){|f|
					f.binmode
					f.print img.to_blob
					f.close
				}
				info=parsepng( @@k_path_cache + File::basename(file));
				File.delete( @@k_path_cache + File::basename(file))
			else
				#Allow for additional formats
				mtd='parse' + type;
				if (!self.respond_to?(mtd))
					Error('Unsupported image type: ' + type);
				end
				info=send(mtd, file);
			end
			info['i']=@images.length+1;
			@images[file] = info;
		else
			info=@images[file];
		end
		#Automatic width and height calculation if needed
		if ((w == 0) and (h == 0))
			rescale_x = (@w - @r_margin - x) / (info['w'] / (@img_scale * @k)) 
			rescale_x = 1 if rescale_x >= 1 
			if (y + info['h'] * rescale_x / (@img_scale * @k) > @page_break_trigger and !@in_footer and AcceptPageBreak())
				#Automatic page break
				if @pages[@page+1].nil?
					ws = @ws;
					if (ws > 0)
						@ws = 0;
						out('0 Tw');
					end
					AddPage(@cur_orientation);
					if (ws > 0)
						@ws = ws;
						out(sprintf('%.3f Tw', ws * @k));
					end
				else
					@page += 1;
				end
				y=@t_margin;
			end
			rescale_y = (@page_break_trigger - y) / (info['h'] / (@img_scale * @k)) 
			rescale_y = 1 if rescale_y >= 1 
			rescale = rescale_y >= rescale_x ? rescale_x : rescale_y

			#Put image at 72 dpi
			# 2004-06-14 :: Nicola Asuni, scale factor where added
			w = info['w'] * rescale / (@img_scale * @k);
			h = info['h'] * rescale / (@img_scale * @k);
		elsif (w == 0)
			w = h * info['w'] / info['h'];
		elsif (h == 0)
			h = w * info['h'] / info['w'];
		end
		out(sprintf('q %.2f 0 0 %.2f %.2f %.2f cm /I%d Do Q', w*@k, h*@k, x*@k, (@h-(y+h))*@k, info['i']));
		if (link)
			Link(x, y, w, h, link);
		end

		#2002-07-31 - Nicola Asuni
		# set right-bottom corner coordinates
		@img_rb_x = x + w;
		@img_rb_y = y + h;
	end
  alias_method :image, :Image

	#
	# Performs a line break. The current abscissa goes back to the left margin and the ordinate increases by the amount passed in parameter.
	# @param float :h The height of the break. By default, the value equals the height of the last printed cell.
	# @since 1.0
	# @see Cell()
	#
	def Ln(h='')
		#Line feed; default value is last cell height
		@x=@l_margin;
		if (h.is_a?(String))
			@y += @lasth;
		else
			@y += h;
		end

		k=@k;
		if (@y > @page_break_trigger and !@in_footer and AcceptPageBreak())
			#Automatic page break
			if @pages[@page+1].nil?
				x = @x;
				ws = @ws;
				if (ws > 0)
					@ws = 0;
					out('0 Tw');
				end
				AddPage(@cur_orientation);
				@x = x;
				if (ws > 0)
					@ws = ws;
					out(sprintf('%.3f Tw', ws * k));
				end
			else
				@page += 1;
				@y=@t_margin;
			end
		end

	end
  alias_method :ln, :Ln

	#
	# Returns the abscissa of the current position.
	# @return float
	# @since 1.2
	# @see SetX(), GetY(), SetY()
	#
	def GetX()
		#Get x position
		return @x;
	end
  alias_method :get_x, :GetX

	#
	# Defines the abscissa of the current position. If the passed value is negative, it is relative to the right of the page.
	# @param float :x The value of the abscissa.
	# @since 1.2
	# @see GetX(), GetY(), SetY(), SetXY()
	#
	def SetX(x)
		#Set x position
		if (x>=0)
			@x = x;
		else
			@x=@w+x;
		end
	end
  alias_method :set_x, :SetX

	#
	# Returns the ordinate of the current position.
	# @return float
	# @since 1.0
	# @see SetY(), GetX(), SetX()
	#
	def GetY()
		#Get y position
		return @y;
	end
  alias_method :get_y, :GetY

	#
	# Moves the current abscissa back to the left margin and sets the ordinate. If the passed value is negative, it is relative to the bottom of the page.
	# @param float :y The value of the ordinate.
	# @since 1.0
	# @see GetX(), GetY(), SetY(), SetXY()
	#
	def SetY(y)
		#Set y position and reset x
		@x=@l_margin;
		if (y>=0)
			@y = y;
		else
			@y=@h+y;
		end
	end
  alias_method :set_y, :SetY

	#
	# Defines the abscissa and ordinate of the current position. If the passed values are negative, they are relative respectively to the right and bottom of the page.
	# @param float :x The value of the abscissa
	# @param float :y The value of the ordinate
	# @since 1.2
	# @see SetX(), SetY()
	#
	def SetXY(x, y)
		#Set x and y positions
		SetY(y);
		SetX(x);
	end
  alias_method :set_xy, :SetXY

	#
	# Send the document to a given destination: string, local file or browser. In the last case, the plug-in may be used (if present) or a download ("Save as" dialog box) may be forced.<br />
	# The method first calls Close() if necessary to terminate the document.
	# @param string :name The name of the file. If not given, the document will be sent to the browser (destination I) with the name doc.pdf.
	# @param string :dest Destination where to send the document. It can take one of the following values:<ul><li>I: send the file inline to the browser. The plug-in is used if available. The name given by name is used when one selects the "Save as" option on the link generating the PDF.</li><li>D: send to the browser and force a file download with the name given by name.</li><li>F: save to a local file with the name given by name.</li><li>S: return the document as a string. name is ignored.</li></ul>If the parameter is not specified but a name is given, destination is F. If no parameter is specified at all, destination is I.<br />
	# @since 1.0
	# @see Close()
	#
	def Output(name='', dest='')
		#Output PDF to some destination
		#Finish document if necessary
		if (@state < 3)
			Close();
		end
		#Normalize parameters
		# Boolean no longer supported
		# if (dest.is_a?(Boolean))
		# 	dest = dest ? 'D' : 'F';
		# end
		dest = dest.upcase
		if (dest=='')
			if (name=='')
				name='doc.pdf';
				dest='I';
			else
				dest='F';
			end
		end
		case (dest)
			when 'I'
			  # This is PHP specific code
				##Send to standard output
				# if (ob_get_contents())
				# 	Error('Some data has already been output, can\'t send PDF file');
				# end
				# if (php_sapi_name()!='cli')
				# 	#We send to a browser
				# 	header('Content-Type: application/pdf');
				# 	if (headers_sent())
				# 		Error('Some data has already been output to browser, can\'t send PDF file');
				# 	end
				# 	header('Content-Length: ' + @buffer.length);
				# 	header('Content-disposition: inline; filename="' + name + '"');
				# end
				return @buffer;
				
			when 'D'
			  # PHP specific
				#Download file
				# if (ob_get_contents())
				# 	Error('Some data has already been output, can\'t send PDF file');
				# end
				# if (!_SERVER['HTTP_USER_AGENT'].nil? && SERVER['HTTP_USER_AGENT'].include?('MSIE'))
				# 	header('Content-Type: application/force-download');
				# else
				# 	header('Content-Type: application/octet-stream');
				# end
				# if (headers_sent())
				# 	Error('Some data has already been output to browser, can\'t send PDF file');
				# end
				# header('Content-Length: '+ @buffer.length);
				# header('Content-disposition: attachment; filename="' + name + '"');
				return @buffer;
				
			when 'F'
        open(name,'wb') do |f|
          f.write(@buffer)
        end
			   # PHP code
			   # 				#Save to local file
			   # 				f=open(name,'wb');
			   # 				if (!f)
			   # 					Error('Unable to create output file: ' + name);
			   # 				end
			   # 				fwrite(f,@buffer,@buffer.length);
			   # 				f.close
				
			when 'S'
				#Return as a string
				return @buffer;
			else
				Error('Incorrect output destination: ' + dest);
			
		end
		return '';
	end
  alias_method :output, :Output

	# Protected methods

	#
	# Check for locale-related bug
	# @access protected
	#
	def dochecks()
		#Check for locale-related bug
		if (1.1==1)
			Error('Don\'t alter the locale before including class file');
		end
		#Check for decimal separator
		if (sprintf('%.1f',1.0)!='1.0')
			setlocale(LC_NUMERIC,'C');
		end
	end

	#
	# Return fonts path
	# @access protected
	#
	def getfontpath(file)
    # Is it in the @@font_path?
    if @@font_path
  		fpath = File.join @@font_path, file
  	  if File.exists?(fpath)
  	    return fpath
      end
    end
    # Is it in this plugin's font folder?
		fpath = File.join File.dirname(__FILE__), 'fonts', file
	  if File.exists?(fpath)
	    return fpath
    end
    # Could not find it.
    nil
	end

	#
	# Start document
	# @access protected
	#
	def begindoc()
		#Start document
		@state=1;
		out('%PDF-1.3');
	end

	#
	# putpages
	# @access protected
	#
	def putpages()
		nb = @page;
		if (@alias_nb_pages)
			nbstr = UTF8ToUTF16BE(nb.to_s, false);
			#Replace number of pages
			1.upto(nb) do |n|
				@pages[n].gsub!(@alias_nb_pages, nbstr)
			end
		end
		if @def_orientation=='P'
			w_pt=@fw_pt
			h_pt=@fh_pt
		else
			w_pt=@fh_pt
			h_pt=@fw_pt
		end
		filter=(@compress) ? '/Filter /FlateDecode ' : ''
		1.upto(nb) do |n|
			#Page
			newobj
			out('<</Type /Page')
			out('/Parent 1 0 R')
			unless @orientation_changes[n].nil?
				out(sprintf('/MediaBox [0 0 %.2f %.2f]', h_pt, w_pt))
			end
			out('/Resources 2 0 R')
			if @page_links[n]
				#Links
				annots='/Annots ['
				@page_links[n].each do |pl|
					rect=sprintf('%.2f %.2f %.2f %.2f', pl[0], pl[1], pl[0]+pl[2], pl[1]-pl[3]);
					annots<<'<</Type /Annot /Subtype /Link /Rect [' + rect + '] /Border [0 0 0] ';
					if (pl[4].is_a?(String))
						annots<<'/A <</S /URI /URI (' + escape(pl[4]) + ')>>>>';
					else
						l=@links[pl[4]];
						h=!@orientation_changes[l[0]].nil? ? w_pt : h_pt;
						annots<<sprintf('/Dest [%d 0 R /XYZ 0 %.2f null]>>',1+2*l[0], h-l[1]*@k);
					end
				end
				out(annots + ']');
			end
			out('/Contents ' + (@n+1).to_s + ' 0 R>>');
			out('endobj');
			#Page content
			p=(@compress) ? gzcompress(@pages[n]) : @pages[n];
			newobj();
			out('<<' + filter + '/Length '+ p.length.to_s + '>>');
			putstream(p);
			out('endobj');
		end
		#Pages root
		@offsets[1]=@buffer.length;
		out('1 0 obj');
		out('<</Type /Pages');
		kids='/Kids [';
		0.upto(nb) do |i|
			kids<<(3+2*i).to_s + ' 0 R ';
		end
		out(kids + ']');
		out('/Count ' + nb.to_s);
		out(sprintf('/MediaBox [0 0 %.2f %.2f]', w_pt, h_pt));
		out('>>');
		out('endobj');
	end

	#
	# Adds fonts
	# putfonts
	# @access protected
	#
	def putfonts()
		nf=@n;
		@diffs.each do |diff|
			#Encodings
			newobj();
			out('<</Type /Encoding /BaseEncoding /WinAnsiEncoding /Differences [' + diff + ']>>');
			out('endobj');
		end
		@font_files.each do |file, info|
			#Font file embedding
			newobj();
			@font_files[file]['n']=@n;
			font='';
			open(getfontpath(file),'rb') do |f|
				font = f.read();
			end
			compressed=(file[-2,2]=='.z');
			if (!compressed && !info['length2'].nil?)
				header=((font[0][0])==128);
				if (header)
					#Strip first binary header
					font=font[6];
				end
				if header && (font[info['length1']][0] == 128)
					#Strip second binary header
					font=font[0..info['length1']] + font[info['length1']+6];
				end
			end
			out('<</Length '+ font.length.to_s);
			if (compressed)
				out('/Filter /FlateDecode');
			end
			out('/Length1 ' + info['length1'].to_s);
			if (!info['length2'].nil?)
				out('/Length2 ' + info['length2'].to_s + ' /Length3 0');
			end
			out('>>');
			open(getfontpath(file),'rb') do |f|
        putstream(font)
      end
			out('endobj');
		end
		@fonts.each do |k, font|
			#Font objects
			@fonts[k]['n']=@n+1;
			type = font['type'];
			name = font['name'];
			if (type=='core')
				#Standard font
				newobj();
				out('<</Type /Font');
				out('/BaseFont /' + name);
				out('/Subtype /Type1');
				if (name!='Symbol' && name!='ZapfDingbats')
					out('/Encoding /WinAnsiEncoding');
				end
				out('>>');
				out('endobj');
    	elsif type == 'Type0'
    		putType0(font)
			elsif (type=='Type1' || type=='TrueType')
				#Additional Type1 or TrueType font
				newobj();
				out('<</Type /Font');
				out('/BaseFont /' + name);
				out('/Subtype /' + type);
				out('/FirstChar 32 /LastChar 255');
				out('/Widths ' + (@n+1).to_s + ' 0 R');
				out('/FontDescriptor ' + (@n+2).to_s + ' 0 R');
				if (font['enc'])
					if (!font['diff'].nil?)
						out('/Encoding ' + (nf+font['diff']).to_s + ' 0 R');
					else
						out('/Encoding /WinAnsiEncoding');
					end
				end
				out('>>');
				out('endobj');
				#Widths
				newobj();
				cw=font['cw']; # &
				s='[';
				32.upto(255) do |i|
					s << cw[i.chr] + ' ';
				end
				out(s + ']');
				out('endobj');
				#Descriptor
				newobj();
				s='<</Type /FontDescriptor /FontName /' + name;
				font['desc'].each do |k, v|
					s<<' /' + k + ' ' + v;
				end
				file = font['file'];
				if (file)
					s<<' /FontFile' + (type=='Type1' ? '' : '2') + ' ' + @font_files[file]['n'] + ' 0 R';
				end
				out(s + '>>');
				out('endobj');
			else
				#Allow for additional types
				mtd='put' + type.downcase;
				if (!self.respond_to?(mtd))
					Error('Unsupported font type: ' + type)
				else
  				self.send(mtd,font)
				end
			end
		end
	end

  def putType0(font)
  	#Type0
		newobj();
		out('<</Type /Font')
  	out('/Subtype /Type0')
  	out('/BaseFont /'+font['name']+'-'+font['cMap'])
  	out('/Encoding /'+font['cMap'])
  	out('/DescendantFonts ['+(@n+1).to_s+' 0 R]')
  	out('>>')
  	out('endobj')
  	#CIDFont
  	newobj()
  	out('<</Type /Font')
  	out('/Subtype /CIDFontType0')
  	out('/BaseFont /'+font['name'])
  	out('/CIDSystemInfo <</Registry (Adobe) /Ordering ('+font['registry']['ordering']+') /Supplement '+font['registry']['supplement'].to_s+'>>')
  	out('/FontDescriptor '+(@n+1).to_s+' 0 R')
  	w='/W [1 ['
		font['cw'].keys.sort.each {|key|
		  w+=font['cw'][key].to_s + " "
# ActionController::Base::logger.debug key.to_s
# ActionController::Base::logger.debug font['cw'][key].to_s
		}
  	out(w+'] 231 325 500 631 [500] 326 389 500]')
  	out('>>')
  	out('endobj')
  	#Font descriptor
  	newobj()
  	out('<</Type /FontDescriptor')
  	out('/FontName /'+font['name'])
  	out('/Flags 6')
  	out('/FontBBox [0 -200 1000 900]')
  	out('/ItalicAngle 0')
  	out('/Ascent 800')
  	out('/Descent -200')
  	out('/CapHeight 800')
  	out('/StemV 60')
  	out('>>')
  	out('endobj')
  end

	#
	# putimages
	# @access protected
	#
	def putimages()
		filter=(@compress) ? '/Filter /FlateDecode ' : '';
		@images.each do |file, info| # was while(list(file, info)=each(@images))
			newobj();
			@images[file]['n']=@n;
			out('<</Type /XObject');
			out('/Subtype /Image');
			out('/Width ' + info['w'].to_s);
			out('/Height ' + info['h'].to_s);
			if (info['cs']=='Indexed')
				out('/ColorSpace [/Indexed /DeviceRGB ' + (info['pal'].length/3-1).to_s + ' ' + (@n+1).to_s + ' 0 R]');
			else
				out('/ColorSpace /' + info['cs']);
				if (info['cs']=='DeviceCMYK')
					out('/Decode [1 0 1 0 1 0 1 0]');
				end
			end
			out('/BitsPerComponent ' + info['bpc'].to_s);
			if (!info['f'].nil?)
				out('/Filter /' + info['f']);
			end
			if (!info['parms'].nil?)
				out(info['parms']);
			end
			if (!info['trns'].nil? and info['trns'].kind_of?(Array))
				trns='';
				0.upto(info['trns'].length) do |i|
					trns << info['trns'][i] + ' ' + info['trns'][i] + ' ';
				end
				out('/Mask [' + trns + ']');
			end
			out('/Length ' + info['data'].length.to_s + '>>');
			putstream(info['data']);
      @images[file]['data']=nil
			out('endobj');
			#Palette
			if (info['cs']=='Indexed')
				newobj();
				pal=(@compress) ? gzcompress(info['pal']) : info['pal'];
				out('<<' + filter + '/Length ' + pal.length.to_s + '>>');
				putstream(pal);
				out('endobj');
			end
		end
	end

	#
	# putxobjectdict
	# @access protected
	#
	def putxobjectdict()
		@images.each_value do |image|
			out('/I' + image['i'].to_s + ' ' + image['n'].to_s + ' 0 R');
		end
	end

	#
	# putresourcedict
	# @access protected
	#
	def putresourcedict()
		out('/ProcSet [/PDF /Text /ImageB /ImageC /ImageI]');
		out('/Font <<');
		@fonts.each_value do |font|
			out('/F' + font['i'].to_s + ' ' + font['n'].to_s + ' 0 R');
		end
		out('>>');
		out('/XObject <<');
		putxobjectdict();
		out('>>');
	end

	#
	# putresources
	# @access protected
	#
	def putresources()
		putfonts();
		putimages();
		#Resource dictionary
		@offsets[2]=@buffer.length;
		out('2 0 obj');
		out('<<');
		putresourcedict();
		out('>>');
		out('endobj');
	end
	
	#
	# putinfo
	# @access protected
	#
	def putinfo()
		out('/Producer ' + textstring(PDF_PRODUCER));
		if (!@title.nil?)
			out('/Title ' + textstring(@title));
		end
		if (!@subject.nil?)
			out('/Subject ' + textstring(@subject));
		end
		if (!@author.nil?)
			out('/Author ' + textstring(@author));
		end
		if (!@keywords.nil?)
			out('/Keywords ' + textstring(@keywords));
		end
		if (!@creator.nil?)
			out('/Creator ' + textstring(@creator));
		end
		out('/CreationDate ' + textstring('D:' + Time.now.strftime('%Y%m%d%H%M%S')));
	end

	#
	# putcatalog
	# @access protected
	#
	def putcatalog()
		out('/Type /Catalog');
		out('/Pages 1 0 R');
		if (@zoom_mode=='fullpage')
			out('/OpenAction [3 0 R /Fit]');
		elsif (@zoom_mode=='fullwidth')
			out('/OpenAction [3 0 R /FitH null]');
		elsif (@zoom_mode=='real')
			out('/OpenAction [3 0 R /XYZ null null 1]');
		elsif (!@zoom_mode.is_a?(String))
			out('/OpenAction [3 0 R /XYZ null null ' + (@zoom_mode/100) + ']');
		end
		if (@layout_mode=='single')
			out('/PageLayout /SinglePage');
		elsif (@layout_mode=='continuous')
			out('/PageLayout /OneColumn');
		elsif (@layout_mode=='two')
			out('/PageLayout /TwoColumnLeft');
		end
	end

	#
	# puttrailer
	# @access protected
	#
	def puttrailer()
		out('/Size ' + (@n+1).to_s);
		out('/Root ' + @n.to_s + ' 0 R');
		out('/Info ' + (@n-1).to_s + ' 0 R');
	end

	#
	# putheader
	# @access protected
	#
	def putheader()
		out('%PDF-' + @pdf_version);
	end

	#
	# enddoc
	# @access protected
	#
	def enddoc()
		putheader();
		putpages();
		putresources();
		#Info
		newobj();
		out('<<');
		putinfo();
		out('>>');
		out('endobj');
		#Catalog
		newobj();
		out('<<');
		putcatalog();
		out('>>');
		out('endobj');
		#Cross-ref
		o=@buffer.length;
		out('xref');
		out('0 ' + (@n+1).to_s);
		out('0000000000 65535 f ');
		1.upto(@n) do |i|
			out(sprintf('%010d 00000 n ',@offsets[i]));
		end
		#Trailer
		out('trailer');
		out('<<');
		puttrailer();
		out('>>');
		out('startxref');
		out(o);
		out('%%EOF');
		@state=3;
	end

	#
	# beginpage
	# @access protected
	#
	def beginpage(orientation)
		@page += 1;
		@pages[@page]='';
		@state=2;
		@x=@l_margin;
		@y=@t_margin;
		@font_family='';
		#Page orientation
		if (orientation.empty?)
			orientation=@def_orientation;
		else
			orientation.upcase!
			if (orientation!=@def_orientation)
				@orientation_changes[@page]=true;
			end
		end
		if (orientation!=@cur_orientation)
			#Change orientation
			if (orientation=='P')
				@w_pt=@fw_pt;
				@h_pt=@fh_pt;
				@w=@fw;
				@h=@fh;
			else
				@w_pt=@fh_pt;
				@h_pt=@fw_pt;
				@w=@fh;
				@h=@fw;
			end
			@page_break_trigger=@h-@b_margin;
			@cur_orientation = orientation;
		end
	end

	#
	# End of page contents
	# @access protected
	#
	def endpage()
		@state=1;
	end

	#
	# Begin a new object
	# @access protected
	#
	def newobj()
		@n += 1;
		@offsets[@n]=@buffer.length;
		out(@n.to_s + ' 0 obj');
	end

	#
	# Underline and Deleted text
	# @access protected
	#
	def dolinetxt(x, y, txt)
		up = @current_font['up'];
		ut = @current_font['ut'];
		w = GetStringWidth(txt) + @ws * txt.count(' ');
		sprintf('%.2f %.2f %.2f %.2f re f', x * @k, (@h - (y - up / 1000.0 * @font_size)) * @k, w * @k, -ut / 1000.0 * @font_size_pt);
	end

	#
	# Extract info from a JPEG file
	# @access protected
	#
	def parsejpg(file)
		a=getimagesize(file);
		if (a.empty?)
			Error('Missing or incorrect image file: ' + file);
		end
		if (!a[2].nil? and a[2]!='JPEG')
			Error('Not a JPEG file: ' + file);
		end
		if (a['channels'].nil? or a['channels']==3)
			colspace='DeviceRGB';
		elsif (a['channels']==4)
			colspace='DeviceCMYK';
		else
			colspace='DeviceGray';
		end
		bpc=!a['bits'].nil? ? a['bits'] : 8;
		#Read whole file
		data='';

		open( @@k_path_cache + File::basename(file),'rb') do |f|
			data<<f.read();
		end
		File.delete( @@k_path_cache + File::basename(file))

		return {'w' => a[0],'h' => a[1],'cs' => colspace,'bpc' => bpc,'f'=>'DCTDecode','data' => data}
	end

	#
	# Extract info from a PNG file
	# @access protected
	#
	def parsepng(file)
		f=open(file,'rb');
		#Check signature
		if (f.read(8)!=137.chr + 'PNG' + 13.chr + 10.chr + 26.chr + 10.chr)
			Error('Not a PNG file: ' + file);
		end
		#Read header chunk
		f.read(4);
		if (f.read(4)!='IHDR')
			Error('Incorrect PNG file: ' + file);
		end
		w=freadint(f);
		h=freadint(f);
		bpc=f.read(1).unpack('C')[0];
		if (bpc>8)
			Error('16-bit depth not supported: ' + file);
		end
		ct=f.read(1).unpack('C')[0];
		if (ct==0)
			colspace='DeviceGray';
		elsif (ct==2)
			colspace='DeviceRGB';
		elsif (ct==3)
			colspace='Indexed';
		else
			Error('Alpha channel not supported: ' + file);
		end
		if (f.read(1).unpack('C')[0] != 0)
			Error('Unknown compression method: ' + file);
		end
		if (f.read(1).unpack('C')[0] != 0)
			Error('Unknown filter method: ' + file);
		end
		if (f.read(1).unpack('C')[0] != 0)
			Error('Interlacing not supported: ' + file);
		end
		f.read(4);
		parms='/DecodeParms <</Predictor 15 /Colors ' + (ct==2 ? 3 : 1).to_s + ' /BitsPerComponent ' + bpc.to_s + ' /Columns ' + w.to_s + '>>';
		#Scan chunks looking for palette, transparency and image data
		pal='';
		trns='';
		data='';
		begin
			n=freadint(f);
			type=f.read(4);
			if (type=='PLTE')
				#Read palette
				pal=f.read( n);
				f.read(4);
			elsif (type=='tRNS')
				#Read transparency info
				t=f.read( n);
				if (ct==0)
					trns = t[1].unpack('C')[0]
				elsif (ct==2)
					trns = t[[1].unpack('C')[0], t[3].unpack('C')[0], t[5].unpack('C')[0]]
				else
					pos=t.include?(0.chr);
					if (pos!=false)
						trns = [pos]
					end
				end
				f.read(4);
			elsif (type=='IDAT')
				#Read image data block
				data<<f.read( n);
				f.read(4);
			elsif (type=='IEND')
				break;
			else
				f.read( n+4);
			end
		end while(n)
		if (colspace=='Indexed' and pal.empty?)
			Error('Missing palette in ' + file);
		end
		f.close
		return {'w' => w, 'h' => h, 'cs' => colspace, 'bpc' => bpc, 'f'=>'FlateDecode', 'parms' => parms, 'pal' => pal, 'trns' => trns, 'data' => data}
	end

	#
	# Read a 4-byte integer from file
	# @access protected
	#
	def freadint(f)
    # Read a 4-byte integer from file
    a = f.read(4).unpack('N')
    return a[0]
	end

	#
	# Format a text string
	# @access protected
	#
	def textstring(s)
		if (@is_unicode)
			#Convert string to UTF-16BE
			s = UTF8ToUTF16BE(s, true);
		end
		return '(' +  escape(s) + ')';
	end

	#
	# Format a text string
	# @access protected
	#
	def escapetext(s)
		if (@is_unicode)
			#Convert string to UTF-16BE
			s = UTF8ToUTF16BE(s, false);
		end
		return escape(s);
	end

	#
	# Add \ before \, ( and )
	# @access protected
	#
	def escape(s)
    # Add \ before \, ( and )
    s.gsub('\\','\\\\\\').gsub('(','\\(').gsub(')','\\)').gsub(13.chr, '\r')
	end

	#
	#
	# @access protected
	#
	def putstream(s)
		out('stream');
		out(s);
		out('endstream');
	end

	#
	# Add a line to the document
	# @access protected
	#
	def out(s)
		if (@state==2)
			@pages[@page] << s.to_s + "\n";
		else
			@buffer << s.to_s + "\n";
		end
	end

	#
	# Adds unicode fonts.<br>
	# Based on PDF Reference 1.3 (section 5)
	# @access protected
	# @author Nicola Asuni
	# @since 1.52.0.TC005 (2005-01-05)
	#
	def puttruetypeunicode(font)
		# Type0 Font
		# A composite font composed of other fonts, organized hierarchically
		newobj();
		out('<</Type /Font');
		out('/Subtype /Type0');
		out('/BaseFont /' + font['name'] + '');
		out('/Encoding /Identity-H'); #The horizontal identity mapping for 2-byte CIDs; may be used with CIDFonts using any Registry, Ordering, and Supplement values.
		out('/DescendantFonts [' + (@n + 1).to_s + ' 0 R]');
		out('/ToUnicode ' + (@n + 2).to_s + ' 0 R');
		out('>>');
		out('endobj');
		
		# CIDFontType2
		# A CIDFont whose glyph descriptions are based on TrueType font technology
		newobj();
		out('<</Type /Font');
		out('/Subtype /CIDFontType2');
		out('/BaseFont /' + font['name'] + '');
		out('/CIDSystemInfo ' + (@n + 2).to_s + ' 0 R'); 
		out('/FontDescriptor ' + (@n + 3).to_s + ' 0 R');
		if (!font['desc']['MissingWidth'].nil?)
			out('/DW ' + font['desc']['MissingWidth'].to_s + ''); # The default width for glyphs in the CIDFont MissingWidth
		end
		w = "";
		font['cw'].each do |cid, width|
			w << '' + cid.to_s + ' [' + width.to_s + '] '; # define a specific width for each individual CID
		end
		out('/W [' + w + ']'); # A description of the widths for the glyphs in the CIDFont
		out('/CIDToGIDMap ' + (@n + 4).to_s + ' 0 R');
		out('>>');
		out('endobj');
		
		# ToUnicode
		# is a stream object that contains the definition of the CMap
		# (PDF Reference 1.3 chap. 5.9)
		newobj();
		out('<</Length 383>>');
		out('stream');
		out('/CIDInit /ProcSet findresource begin');
		out('12 dict begin');
		out('begincmap');
		out('/CIDSystemInfo');
		out('<</Registry (Adobe)');
		out('/Ordering (UCS)');
		out('/Supplement 0');
		out('>> def');
		out('/CMapName /Adobe-Identity-UCS def');
		out('/CMapType 2 def');
		out('1 begincodespacerange');
		out('<0000> <FFFF>');
		out('endcodespacerange');
		out('1 beginbfrange');
		out('<0000> <FFFF> <0000>');
		out('endbfrange');
		out('endcmap');
		out('CMapName currentdict /CMap defineresource pop');
		out('end');
		out('end');
		out('endstream');
		out('endobj');
		
		# CIDSystemInfo dictionary
		# A dictionary containing entries that define the character collection of the CIDFont.
		newobj();
		out('<</Registry (Adobe)'); # A string identifying an issuer of character collections
		out('/Ordering (UCS)'); # A string that uniquely names a character collection issued by a specific registry
		out('/Supplement 0'); # The supplement number of the character collection.
		out('>>');
		out('endobj');
		
		# Font descriptor
		# A font descriptor describing the CIDFont default metrics other than its glyph widths
		newobj();
		out('<</Type /FontDescriptor');
		out('/FontName /' + font['name']);
		font['desc'].each do |key, value|
			out('/' + key.to_s + ' ' + value.to_s);
		end
		if (font['file'])
			# A stream containing a TrueType font program
			out('/FontFile2 ' + @font_files[font['file']]['n'].to_s + ' 0 R');
		end
		out('>>');
		out('endobj');

		# Embed CIDToGIDMap
		# A specification of the mapping from CIDs to glyph indices
		newobj();
		ctgfile = getfontpath(font['ctg'])
		if (!ctgfile)
			Error('Font file not found: ' + ctgfile);
		end
		size = File.size(ctgfile);
		out('<</Length ' + size.to_s + '');
		if (ctgfile[-2,2] == '.z') # check file extension
			# Decompresses data encoded using the public-domain 
			# zlib/deflate compression method, reproducing the 
			# original text or binary data#
			out('/Filter /FlateDecode');
		end
		out('>>');
    open(ctgfile, "rb") do |f|
      putstream(f.read())
    end
		out('endobj');
	end

	 #
	# Converts UTF-8 strings to codepoints array.<br>
	# Invalid byte sequences will be replaced with 0xFFFD (replacement character)<br>
	# Based on: http://www.faqs.org/rfcs/rfc3629.html
	# <pre>
	# 	  Char. number range  |        UTF-8 octet sequence
	#       (hexadecimal)    |              (binary)
	#    --------------------+-----------------------------------------------
	#    0000 0000-0000 007F | 0xxxxxxx
	#    0000 0080-0000 07FF | 110xxxxx 10xxxxxx
	#    0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx
	#    0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
	#    ---------------------------------------------------------------------
	#
	#   ABFN notation:
	#   ---------------------------------------------------------------------
	#   UTF8-octets =#( UTF8-char )
	#   UTF8-char   = UTF8-1 / UTF8-2 / UTF8-3 / UTF8-4
	#   UTF8-1      = %x00-7F
	#   UTF8-2      = %xC2-DF UTF8-tail
	#
	#   UTF8-3      = %xE0 %xA0-BF UTF8-tail / %xE1-EC 2( UTF8-tail ) /
	#                 %xED %x80-9F UTF8-tail / %xEE-EF 2( UTF8-tail )
	#   UTF8-4      = %xF0 %x90-BF 2( UTF8-tail ) / %xF1-F3 3( UTF8-tail ) /
	#                 %xF4 %x80-8F 2( UTF8-tail )
	#   UTF8-tail   = %x80-BF
	#   ---------------------------------------------------------------------
	# </pre>
	# @param string :str string to process.
	# @return array containing codepoints (UTF-8 characters values)
	# @access protected
	# @author Nicola Asuni
	# @since 1.53.0.TC005 (2005-01-05)
	#
	def UTF8StringToArray(str)
		if (!@is_unicode)
			return str; # string is not in unicode
		end

		unicode = [] # array containing unicode values
		bytes  = [] # array containing single character byte sequences
		numbytes  = 1; # number of octetc needed to represent the UTF-8 character

		str = str.to_s; # force :str to be a string
		
		str.each_byte do |char|
			if (bytes.length == 0) # get starting octect
				if (char <= 0x7F)
					unicode << char # use the character "as is" because is ASCII
					numbytes = 1
				elsif ((char >> 0x05) == 0x06) # 2 bytes character (0x06 = 110 BIN)
					bytes << ((char - 0xC0) << 0x06) 
					numbytes = 2
				elsif ((char >> 0x04) == 0x0E) # 3 bytes character (0x0E = 1110 BIN)
					bytes << ((char - 0xE0) << 0x0C) 
					numbytes = 3
				elsif ((char >> 0x03) == 0x1E) # 4 bytes character (0x1E = 11110 BIN)
					bytes << ((char - 0xF0) << 0x12)
					numbytes = 4
				else
					# use replacement character for other invalid sequences
					unicode << 0xFFFD
					bytes = []
					numbytes = 1
				end
			elsif ((char >> 0x06) == 0x02) # bytes 2, 3 and 4 must start with 0x02 = 10 BIN
				bytes << (char - 0x80)
				if (bytes.length == numbytes)
					# compose UTF-8 bytes to a single unicode value
					char = bytes[0]
					1.upto(numbytes-1) do |j|
						char += (bytes[j] << ((numbytes - j - 1) * 0x06))
					end
					if (((char >= 0xD800) and (char <= 0xDFFF)) or (char >= 0x10FFFF))
						# The definition of UTF-8 prohibits encoding character numbers between
						# U+D800 and U+DFFF, which are reserved for use with the UTF-16
						# encoding form (as surrogate pairs) and do not directly represent
						# characters
						unicode << 0xFFFD; # use replacement character
  				else
  					unicode << char; # add char to array
					end
  				# reset data for next char
  				bytes = []
  				numbytes = 1;
				end
			else
				# use replacement character for other invalid sequences
				unicode << 0xFFFD;
				bytes = []
				numbytes = 1;
			end
		end
		return unicode;
	end
	
	#
	# Converts UTF-8 strings to UTF16-BE.<br>
	# Based on: http://www.faqs.org/rfcs/rfc2781.html
 	# <pre>
	#   Encoding UTF-16:
	# 
		#   Encoding of a single character from an ISO 10646 character value to
	#    UTF-16 proceeds as follows. Let U be the character number, no greater
	#    than 0x10FFFF.
	# 
	#    1) If U < 0x10000, encode U as a 16-bit unsigned integer and
	#       terminate.
	# 
	#    2) Let U' = U - 0x10000. Because U is less than or equal to 0x10FFFF,
	#       U' must be less than or equal to 0xFFFFF. That is, U' can be
	#       represented in 20 bits.
	# 
	#    3) Initialize two 16-bit unsigned integers, W1 and W2, to 0xD800 and
	#       0xDC00, respectively. These integers each have 10 bits free to
	#       encode the character value, for a total of 20 bits.
	# 
	#    4) Assign the 10 high-order bits of the 20-bit U' to the 10 low-order
	#       bits of W1 and the 10 low-order bits of U' to the 10 low-order
	#       bits of W2. Terminate.
	# 
	#    Graphically, steps 2 through 4 look like:
	#    U' = yyyyyyyyyyxxxxxxxxxx
	#    W1 = 110110yyyyyyyyyy
	#    W2 = 110111xxxxxxxxxx
	# </pre>
	# @param string :str string to process.
	# @param boolean :setbom if true set the Byte Order Mark (BOM = 0xFEFF)
	# @return string
	# @access protected
	# @author Nicola Asuni
	# @since 1.53.0.TC005 (2005-01-05)
	# @uses UTF8StringToArray
	#
	def UTF8ToUTF16BE(str, setbom=true)
		if (!@is_unicode)
			return str; # string is not in unicode
		end
		outstr = ""; # string to be returned
		unicode = UTF8StringToArray(str); # array containing UTF-8 unicode values
		numitems = unicode.length;
		
		if (setbom)
			outstr << "\xFE\xFF"; # Byte Order Mark (BOM)
		end
		unicode.each do |char|
			if (char == 0xFFFD)
				outstr << "\xFF\xFD"; # replacement character
			elsif (char < 0x10000)
				outstr << (char >> 0x08).chr;
				outstr << (char & 0xFF).chr;
			else
				char -= 0x10000;
				w1 = 0xD800 | (char >> 0x10);
				w2 = 0xDC00 | (char & 0x3FF);	
				outstr << (w1 >> 0x08).chr;
				outstr << (w1 & 0xFF).chr;
				outstr << (w2 >> 0x08).chr;
				outstr << (w2 & 0xFF).chr;
			end
		end
		return outstr;
	end
	
	# ====================================================
	
	#
 	# Set header font.
	# @param array :font font
	# @since 1.1
	#
	def SetHeaderFont(font)
		@header_font = font;
	end
	alias_method :set_header_font, :SetHeaderFont
	
	#
 	# Set footer font.
	# @param array :font font
	# @since 1.1
	#
	def SetFooterFont(font)
		@footer_font = font;
	end
	alias_method :set_footer_font, :SetFooterFont
	
	#
 	# Set language array.
	# @param array :language
	# @since 1.1
	#
	def SetLanguageArray(language)
		@l = language;
	end
	alias_method :set_language_array, :SetLanguageArray
	#
 	# Set document barcode.
	# @param string :bc barcode
	#
	def SetBarcode(bc="")
		@barcode = bc;
	end
	
	#
 	# Print Barcode.
	# @param int :x x position in user units
	# @param int :y y position in user units
	# @param int :w width in user units
	# @param int :h height position in user units
	# @param string :type type of barcode (I25, C128A, C128B, C128C, C39)
	# @param string :style barcode style
	# @param string :font font for text
	# @param int :xres x resolution
	# @param string :code code to print
	#
	def writeBarcode(x, y, w, h, type, style, font, xres, code)
		require(File.dirname(__FILE__) + "/barcode/barcode.rb");
		require(File.dirname(__FILE__) + "/barcode/i25object.rb");
		require(File.dirname(__FILE__) + "/barcode/c39object.rb");
		require(File.dirname(__FILE__) + "/barcode/c128aobject.rb");
		require(File.dirname(__FILE__) + "/barcode/c128bobject.rb");
		require(File.dirname(__FILE__) + "/barcode/c128cobject.rb");
		
		if (code.empty?)
			return;
		end
		
		if (style.empty?)
			style  = BCS_ALIGN_LEFT;
			style |= BCS_IMAGE_PNG;
			style |= BCS_TRANSPARENT;
			#:style |= BCS_BORDER;
			#:style |= BCS_DRAW_TEXT;
			#:style |= BCS_STRETCH_TEXT;
			#:style |= BCS_REVERSE_COLOR;
		end
		if (font.empty?) then font = BCD_DEFAULT_FONT; end
		if (xres.empty?) then xres = BCD_DEFAULT_XRES; end
		
		scale_factor = 1.5 * xres * @k;
		bc_w = (w * scale_factor).round #width in points
		bc_h = (h * scale_factor).round #height in points
		
		case (type.upcase)
			when "I25"
				obj = I25Object.new(bc_w, bc_h, style, code);
			when "C128A"
				obj = C128AObject.new(bc_w, bc_h, style, code);
			when "C128B"
				obj = C128BObject.new(bc_w, bc_h, style, code);
			when "C128C"
				obj = C128CObject.new(bc_w, bc_h, style, code);
			when "C39"
				obj = C39Object.new(bc_w, bc_h, style, code);
		end
		
		obj.SetFont(font);   
		obj.DrawObject(xres);
		
		#use a temporary file....
		tmpName = tempnam(@@k_path_cache,'img');
		imagepng(obj.getImage(), tmpName);
		Image(tmpName, x, y, w, h, 'png');
		obj.DestroyObject();
		obj = nil
		unlink(tmpName);
	end
	
	#
 	# Returns the PDF data.
	#
	def GetPDFData()
		if (@state < 3)
			Close();
		end
		return @buffer;
	end
	
	# --- HTML PARSER FUNCTIONS ---
	
	#
	# Allows to preserve some HTML formatting.<br />
	# Supports: h1, h2, h3, h4, h5, h6, b, u, i, a, img, p, br, strong, em, ins, del, font, blockquote, li, ul, ol, hr, td, th, tr, table, sup, sub, small
	# @param string :html text to display
	# @param boolean :ln if true add a new line after text (default = true)
	# @param int :fill Indicates if the background must be painted (1) or transparent (0). Default value: 0.
	#
	def writeHTML(html, ln=true, fill=0, h=0)
    
    @lasth = h if h > 0
		if (@lasth == 0)
			#set row height
			@lasth = @font_size * @@k_cell_height_ratio; 
		end
		
    @href = nil
    @style = "";
    @t_cells =  [[]];
    @table_id = 0;

    # pre calculate
    html.split(/(<[^>]+>)/).each do |element|
      if "<" == element[0,1]
        #Tag
        if (element[1, 1] == '/')
					closedHTMLTagCalc(element[2..-2].downcase);
        else
					#Extract attributes
					# get tag name
					tag = element.scan(/([a-zA-Z0-9]*)/).flatten.delete_if {|x| x.length == 0}
					tag = tag[0].downcase;
					
					# get attributes
					attr_array = element.scan(/([^=\s]*)=["\']?([^"\']*)["\']?/)
          attrs = {}
          attr_array.each do |name, value|
    			  attrs[name.downcase] = value;
    		  end
					openHTMLTagCalc(tag, attrs);
				end
			end
		end
		@table_id = 0;
				
    html.split(/(<[A-Za-z!?\/][^>]*?>)/).each do |element|
      if "<" == element[0,1]
        #Tag
        if (element[1, 1] == '/')
					closedHTMLTagHandler(element[2..-2].downcase);
        else
					#Extract attributes
					# get tag name
					tag = element.scan(/([a-zA-Z0-9]*)/).flatten.delete_if {|x| x.length == 0}
					tag = tag[0].downcase;
					
					# get attributes
					attr_array = element.scan(/([^=\s]*)=["\']?([^"\']*)["\']?/)
          attrs = {}
          attr_array.each do |name, value|
    			  attrs[name.downcase] = value;
    		  end
					openHTMLTagHandler(tag, attrs, fill);
				end
				
      else
        #Text
				if (@href)
					element.gsub!(/[\t\r\n\f]/, "");
					addHtmlLink(@href, element, fill);
				elsif (@tdbegin)
					element.gsub!(/[\t\r\n\f]/, "");
					element.gsub!(/&nbsp;/, " ");
					base_page = @page;
					base_x = @x;
					base_y = @y;

					MultiCell(@tdwidth, @tdheight, unhtmlentities(element.strip), @tableborder, @tdalign, @tdfill, 1);
					tr_end = @t_cells[@table_id][@tr_id][@td_id]['j1'] + 1;
					if @max_td_page[tr_end].nil?  or (@max_td_page[tr_end] < @page)
						@max_td_page[tr_end] = @page
						@max_td_y[tr_end] = @y
					elsif (@max_td_page[tr_end] == @page)
						@max_td_y[tr_end] = @y if @max_td_y[tr_end].nil? or (@max_td_y[tr_end] < @y) 
					end

					@page = base_page;
					@x = base_x + @tdwidth;
					@y = base_y;
				elsif (@pre_state == true and element.length > 0)
					Write(@lasth, unhtmlentities(element), '', fill);
				elsif (element.strip.length > 0)
					element.gsub!(/[\t\r\n\f]/, "");
					element.gsub!(/&nbsp;/, " ");
					Write(@lasth, unhtmlentities(element), '', fill);
				end
      end
    end
    
		if (ln)
			Ln(@lasth);
		end
	end
  alias_method :write_html, :writeHTML

	#
	# Prints a cell (rectangular area) with optional borders, background color and html text string. The upper-left corner of the cell corresponds to the current position. After the call, the current position moves to the right or to the next line.<br />
	# If automatic page breaking is enabled and the cell goes beyond the limit, a page break is done before outputting.
	# @param float :w Cell width. If 0, the cell extends up to the right margin.
	# @param float :h Cell minimum height. The cell extends automatically if needed.
	# @param float :x upper-left corner X coordinate
	# @param float :y upper-left corner Y coordinate
	# @param string :html html text to print. Default value: empty string.
	# @param mixed :border Indicates if borders must be drawn around the cell. The value can be either a number:<ul><li>0: no border (default)</li><li>1: frame</li></ul>or a string containing some or all of the following characters (in any order):<ul><li>L: left</li><li>T: top</li><li>R: right</li><li>B: bottom</li></ul>
	# @param int :ln Indicates where the current position should go after the call. Possible values are:<ul><li>0: to the right</li><li>1: to the beginning of the next line</li><li>2: below</li></ul>
# Putting 1 is equivalent to putting 0 and calling Ln() just after. Default value: 0.
	# @param int :fill Indicates if the cell background must be painted (1) or transparent (0). Default value: 0.
	# @see Cell()
	#
	def writeHTMLCell(w, h, x, y, html='', border=0, ln=1, fill=0)
		
		if (@lasth == 0)
			#set row height
			@lasth = @font_size * @@k_cell_height_ratio; 
		end
		
		if (x == 0)
			x = GetX();
		end
		if (y == 0)
			y = GetY();
		end
		
		# get current page number
		pagenum = @page;
		
		SetX(x);
		SetY(y);
				
		if (w == 0)
			w = @fw - x - @r_margin;
		end
		
		b=0;
		if (border)
			if (border==1)
				border='LTRB';
				b='LRT';
				b2='LR';
			elsif border.is_a?(String)
				b2='';
				if (border.include?('L'))
					b2<<'L';
				end
				if (border.include?('R'))
					b2<<'R';
				end
				b=(border.include?('T')) ? b2 + 'T' : b2;
			end
		end
		
		# store original margin values
		l_margin = @l_margin;
		r_margin = @r_margin;
		
		# set new margin values
		SetLeftMargin(x);
		SetRightMargin(@fw - x - w);
				
		# calculate remaining vertical space on page
		restspace = GetPageHeight() - GetY() - GetBreakMargin();
		
		writeHTML(html, true, fill); # write html text
		
		currentY =  GetY();
		
		@auto_page_break = false;
		# check if a new page has been created
		if (@page > pagenum)
			# design a cell around the text on first page
			currentpage = @page;
			@page = pagenum;
			SetY(GetPageHeight() - restspace - GetBreakMargin());
			Cell(w, restspace - 1, "", b, 0, 'L', 0);
			b = b2;
			@page += 1;
			while @page < currentpage
				SetY(@t_margin); # put cursor at the beginning of text
				Cell(w, @page_break_trigger - @t_margin, "", b, 0, 'L', 0);
				@page += 1;
			end
			if (border.is_a?(String) and border.include?('B'))
				b<<'B';
			end
			# design a cell around the text on last page
			SetY(@t_margin); # put cursor at the beginning of text
			Cell(w, currentY - @t_margin, "", b, 0, 'L', 0);
		else
			SetY(y); # put cursor at the beginning of text
			# design a cell around the text
			Cell(w, [h, (currentY - y)].max, "", border, 0, 'L', 0);
		end
		@auto_page_break = true;
		
		# restore original margin values
		SetLeftMargin(l_margin);
		SetRightMargin(r_margin);
		
		@lasth = h

		# move cursor to specified position
		if (ln == 0)
			# go to the top-right of the cell
			@x = x + w;
			@y = y;
		elsif (ln == 1)
			# go to the beginning of the next line
			@x = @l_margin;
			@y = currentY;
		elsif (ln == 2)
			# go to the bottom-left of the cell (below)
			@x = x;
			@y = currentY;
		end
	end
  alias_method :write_html_cell, :writeHTMLCell

	#
	# Check html table tag position.
	#
	# @param array :table potision array
	# @param int :current tr tag id number
	# @param int :current td tag id number
	# @access private
	# @return int : next td_id position.
	#               value 0 mean that can use position.
	#
	def checkTableBlockingCellPosition(table, tr_id, td_id )
		0.upto(tr_id) do |j|
			0.upto(@t_cells[table][j].size - 1) do |i|
				if @t_cells[table][j][i]['i0'] <= td_id and td_id <= @t_cells[table][j][i]['i1']
					if @t_cells[table][j][i]['j0'] <= tr_id and tr_id <= @t_cells[table][j][i]['j1']
						return @t_cells[table][j][i]['i1'] - td_id + 1;
					end
				end
			end
		end
		return 0;
	end

	#
	# Calculate opening tags.
	#
	# html table cell array : @t_cells
	#
	#  i0: table cell start position
	#  i1: table cell end position
	#  j0: table row start position
	#  j1: table row end position
	#
	#  +------+
	#  |i0,j0 |
	#  | i1,j1|
	#  +------+
	#
	#  example html:
	#  <table>
	#    <tr><td></td><td></td><td></td></tr>
	#    <tr><td colspan=2></td><td></td></tr>
	#    <tr><td rowspan=2></td><td></td><td></td></tr>
	#    <tr><td></td><td></td></tr>
	#  </table>
	#
	#   i: 0    1    2
	#  j+----+----+----+
	#  :|0,0 |1,0 |2,0 |
	#  0| 0,0| 1,0| 2,0|
	#   +----+----+----+
	#   |0,1      |2,1 |
	#  1|      1,1| 2,1|
	#   +----+----+----+
	#   |0,2 |1,2 |2,2 |
	#  2|    | 1,2| 2,2|
	#   +    +----+----+
	#   |    |1,3 |2,3 |
	#  3| 0,3| 1,3| 2,3|
	#   +----+----+----+
	#
	#  html table cell array :
	#  [[[i0=>0,j0=>0,i1=>0,j1=>0],[i0=>1,j0=>0,i1=>1,j1=>0],[i0=>2,j0=>0,i1=>2,j1=>0]],
	#   [[i0=>0,j0=>1,i1=>1,j1=>1],[i0=>2,j0=>1,i1=>2,j1=>1]],
	#   [[i0=>0,j0=>2,i1=>0,j1=>3],[i0=>1,j0=>2,i1=>1,j1=>2],[i0=>2,j0=>2,i1=>2,j1=>2]]
	#   [[i0=>1,j0=>3,i1=>1,j1=>3],[i0=>2,j0=>3,i1=>2,j1=>3]]]
	#
	# @param string :tag tag name (in upcase)
	# @param string :attr tag attribute (in upcase)
	# @access private
	#
	def openHTMLTagCalc(tag, attrs)
		#Opening tag
		case (tag)
			when 'table'
				@max_table_columns[@table_id] = 0;
				@t_columns = 0;
				@tr_id = -1;
			when 'tr'
				if @max_table_columns[@table_id] < @t_columns
					@max_table_columns[@table_id] = @t_columns;
				end
				@t_columns = 0;
				@tr_id +=  1;
				@td_id =  -1;
				@t_cells[@table_id].push []
			when 'td', 'th'
				@td_id +=  1;
				if attrs['colspan'].nil? or attrs['colspan'] == ''
					colspan = 1;
				else
					colspan = attrs['colspan'].to_i;
				end
				if attrs['rowspan'].nil? or attrs['rowspan'] == ''
					rowspan = 1;
				else
					rowspan = attrs['rowspan'].to_i;
				end

				i = 0;
				while true
					next_i_distance = checkTableBlockingCellPosition(@table_id, @tr_id, @td_id + i);
					if next_i_distance == 0
						@t_cells[@table_id][@tr_id].push "i0"=>@td_id + i, "j0"=>@tr_id, "i1"=>(@td_id + i + colspan - 1), "j1"=>@tr_id + rowspan - 1
						break;
					end
					i += next_i_distance;
				end

				@t_columns += colspan;
		end
	end

	#
	# Calculate closing tags.
	# @param string :tag tag name (in upcase)
	# @access private
	#
	def closedHTMLTagCalc(tag)
		#Closing tag
		case (tag)
			when 'table'
				if @max_table_columns[@table_id] < @t_columns
					@max_table_columns[@table_id] = @t_columns;
				end
				@table_id += 1;
				@t_cells.push []
		end
	end

	#
	# Convert to accessible file path
	# @param string :attrname image file name
	#
	def getImageFilename( attrname )
		nil
	end

	#
	# Process opening tags.
	# @param string :tag tag name (in upcase)
	# @param string :attr tag attribute (in upcase)
	# @param int :fill Indicates if the cell background must be painted (1) or transparent (0). Default value: 0.
	# @access private
	#
	def openHTMLTagHandler(tag, attrs, fill=0)
		#Opening tag
		case (tag)
			when 'pre'
				@pre_state = true;
				@l_margin += 5;	
				@r_margin += 5;	
				@x += 5;	

			when 'table'
				if @default_table_columns < @max_table_columns[@table_id]
					@table_columns = @max_table_columns[@table_id];
				else
					@table_columns = @default_table_columns;
				end
				@l_margin += 5;	
				@r_margin += 5;	
				@x += 5;	

				if attrs['border'].nil? or attrs['border'] == ''
					@tableborder = 0;
				else
					@tableborder = attrs['border'];
				end
				@tr_id        = -1;
				@max_td_page[0] = @page;
				@max_td_y[0]    = @y;

			when 'tr', 'td', 'th'
				if tag == 'th'
					SetStyle('b', true);
					@tdalign = "C";
				end
				if ((!attrs['width'].nil?) and (attrs['width'] != ''))
					@tdwidth = (attrs['width'].to_i/4);
				else
					@tdwidth = ((@w - @l_margin - @r_margin) / @table_columns);
				end

				if tag == 'tr'
					@tr_id +=  1;
					@td_id  = -1;
				else
					@td_id +=  1;
					@x =  @l_margin + @tdwidth * @t_cells[@table_id][@tr_id][@td_id]['i0'];
				end

				if attrs['colspan'].nil? or attrs['border'] == ''
					@colspan = 1;
				else
					@colspan = attrs['colspan'].to_i;
				end
				@tdwidth *= @colspan;
				if ((!attrs['height'].nil?) and (attrs['height'] != ''))
					@tdheight=(attrs['height'].to_i / @k);
				else
					@tdheight = @lasth;
				end
				if ((!attrs['align'].nil?) and (attrs['align'] != ''))
					case (attrs['align'])
						when 'center'
							@tdalign = "C";
						when 'right'
							@tdalign = "R";
						when 'left'
							@tdalign = "L";
					end
				end
				if ((!attrs['bgcolor'].nil?) and (attrs['bgcolor'] != ''))
					coul = convertColorHexToDec(attrs['bgcolor']);
					SetFillColor(coul['R'], coul['G'], coul['B']);
					@tdfill=1;
				end
				@tdbegin=true;
				
			when 'hr'
				margin = 1;
				if ((!attrs['width'].nil?) and (attrs['width'] != ''))
					hrWidth = attrs['width'];
				else
					hrWidth = @w - @l_margin - @r_margin - margin;
				end
				SetLineWidth(0.2);
				Line(@x + margin, @y, @x + hrWidth, @y);
				Ln();
				
			when 'strong'
				SetStyle('b', true);
				
			when 'em'
				SetStyle('i', true);
				
			when 'ins'
				SetStyle('u', true);
				
			when 'del'
				SetStyle('d', true);
				
			when 'b', 'i', 'u'
				SetStyle(tag, true);
				
			when 'a'
				@href = attrs['href'];
				
			when 'img'
				if (!attrs['src'].nil?)
					# Only generates image include a pdf if RMagick is avalaible
					unless Object.const_defined?(:Magick)
						Write(@lasth, attrs['src'], '', fill);
						return
					end
					file = getImageFilename(attrs['src'])
					if (file.nil?)
						Write(@lasth, attrs['src'], '', fill);
						return
					end

					if (attrs['width'].nil?)
						attrs['width'] = 0;
					end
					if (attrs['height'].nil?)
						attrs['height'] = 0;
					end
					
					begin
						Image(file, GetX(),GetY(), pixelsToMillimeters(attrs['width']), pixelsToMillimeters(attrs['height']));
						#SetX(@img_rb_x);
						SetY(@img_rb_y);
					rescue => err
						logger.error "pdf: Image: error: #{err.message}"
						Write(@lasth, attrs['src'], '', fill);
						if File.file?( @@k_path_cache + File::basename(file))
							File.delete( @@k_path_cache + File::basename(file))
						end
					end
				end
				
			when 'ul', 'ol'
				if @li_count == 0
					Ln() if @prevquote_count == @quote_count; # insert Ln for keeping quote lines
					@prevquote_count = @quote_count;
				end
				if @li_state == true
					Ln();
			  	@li_state = false;
				end
				if tag == 'ul'
					@list_ordered[@li_count] = false;
				else
					@list_ordered[@li_count] = true;
				end
				@list_count[@li_count] = 0;
				@li_count += 1
				
			when 'li'
				Ln() if @li_state == true
				if (@list_ordered[@li_count - 1])
					@list_count[@li_count - 1] += 1;
					@li_spacer = "    " * @li_count + (@list_count[@li_count - 1]).to_s + ". ";
				else
					#unordered list simbol
					@li_spacer = "    " * @li_count + "-  ";
				end
				Write(@lasth, @spacer + @li_spacer, '', fill);
				@li_state = true;

			when 'blockquote'
				if (@quote_count == 0)
					SetStyle('i', true);
					@l_margin += 5;	
				else
					@l_margin += 5 / 2;	
				end
				@x = @l_margin;	
				@quote_top[@quote_count]  = @y;
				@quote_page[@quote_count] = @page;
				@quote_count += 1
			when 'br'
				Ln();

				if (@li_spacer.length > 0)
					@x += GetStringWidth(@li_spacer);
				end
				
			when 'p'
				Ln();
				0.upto(@quote_count - 1) do |i|
			  	if @quote_page[i] == @page;
			  		if @quote_top[i] == @y - @lasth; # fix start line
			  			@quote_top[i] = @y;
						end
					else
			  		if @quote_page[i] == @page - 1;
			  			@quote_page[i] = @page; # fix start line
			  			@quote_top[i] = @t_margin;
						end
					end
				end
				
			when 'sup'
				currentfont_size = @font_size;
				@tempfontsize = @font_size_pt;
				SetFontSize(@font_size_pt * @@k_small_ratio);
				SetXY(GetX(), GetY() - ((currentfont_size - @font_size)*(@@k_small_ratio)));
				
			when 'sub'
				currentfont_size = @font_size;
				@tempfontsize = @font_size_pt;
				SetFontSize(@font_size_pt * @@k_small_ratio);
				SetXY(GetX(), GetY() + ((currentfont_size - @font_size)*(@@k_small_ratio)));
				
			when 'small'
				currentfont_size = @font_size;
				@tempfontsize = @font_size_pt;
				SetFontSize(@font_size_pt * @@k_small_ratio);
				SetXY(GetX(), GetY() + ((currentfont_size - @font_size)/3));
				
			when 'font'
				if (!attrs['color'].nil? and attrs['color']!='')
					coul = convertColorHexToDec(attrs['color']);
					SetTextColor(coul['R'], coul['G'], coul['B']);
					@issetcolor=true;
				end
				if (!attrs['face'].nil? and @fontlist.include?(attrs['face'].downcase))
					SetFont(attrs['face'].downcase);
					@issetfont=true;
				end
				if (!attrs['size'].nil?)
					headsize = attrs['size'].to_i;
				else
					headsize = 0;
				end
				currentfont_size = @font_size;
				@tempfontsize = @font_size_pt;
				SetFontSize(@font_size_pt + headsize);
				@lasth = @font_size * @@k_cell_height_ratio;
				
			when 'h1', 'h2', 'h3', 'h4', 'h5', 'h6'
				Ln();
				headsize = (4 - tag[1,1].to_f) * 2
				@tempfontsize = @font_size_pt;
				SetFontSize(@font_size_pt + headsize);
				SetStyle('b', true);
				@lasth = @font_size * @@k_cell_height_ratio;
				
		end
	end
  
	#
	# Process closing tags.
	# @param string :tag tag name (in upcase)
	# @access private
	#
	def closedHTMLTagHandler(tag)
		#Closing tag
		case (tag)
			when 'pre'
				@pre_state = false;
				@l_margin -= 5;
				@r_margin -= 5;
				@x = @l_margin;
				Ln();

			when 'td','th'
				@tdbegin = false;
				@tdwidth = 0;
				@tdheight = 0;
				@tdalign = "L";
				SetStyle('b', false);
				@tdfill = 0;
				SetFillColor(@prevfill_color[0], @prevfill_color[1], @prevfill_color[2]);
				
			when 'tr'
				@y = @max_td_y[@tr_id + 1];
				@x = @l_margin;
				@page = @max_td_page[@tr_id + 1];
				
			when 'table'
				# Write Table Line
				width = (@w - @l_margin - @r_margin) / @table_columns;
				0.upto(@t_cells[@table_id].size - 1) do |j|
					0.upto(@t_cells[@table_id][j].size - 1) do |i|
						@page = @max_td_page[j]
						i0=@t_cells[@table_id][j][i]['i0'];
						j0=@t_cells[@table_id][j][i]['j0'];
						i1=@t_cells[@table_id][j][i]['i1'];
						j1=@t_cells[@table_id][j][i]['j1'];

						Line(@l_margin + width * i0,     @max_td_y[j0],   @l_margin + width * (i1+1), @max_td_y[j0])   # top
						if ( @page == @max_td_page[j1 + 1])
							Line(@l_margin + width * i0,     @max_td_y[j0],   @l_margin + width * i0,     @max_td_y[j1+1]) # left
							Line(@l_margin + width * (i1+1), @max_td_y[j0],   @l_margin + width * (i1+1), @max_td_y[j1+1]) # right
						else
							Line(@l_margin + width * i0,     @max_td_y[j0],   @l_margin + width * i0,     @page_break_trigger) # left
							Line(@l_margin + width * (i1+1), @max_td_y[j0],   @l_margin + width * (i1+1), @page_break_trigger) # right
							@page += 1;
							while @page < @max_td_page[j1 + 1]
								Line(@l_margin + width * i0,     @t_margin,   @l_margin + width * i0,     @page_break_trigger) # left
								Line(@l_margin + width * (i1+1), @t_margin,   @l_margin + width * (i1+1), @page_break_trigger) # right
								@page += 1;
							end
							Line(@l_margin + width * i0,     @t_margin,   @l_margin + width * i0,     @max_td_y[j1+1]) # left
							Line(@l_margin + width * (i1+1), @t_margin,   @l_margin + width * (i1+1), @max_td_y[j1+1]) # right
						end
						Line(@l_margin + width * i0,     @max_td_y[j1+1], @l_margin + width * (i1+1), @max_td_y[j1+1]) # bottom
					end
				end

				@l_margin -= 5;
				@r_margin -= 5;
				@tableborder=0;
				Ln();
				@table_id += 1;
				
			when 'strong'
				SetStyle('b', false);
				
			when 'em'
				SetStyle('i', false);
				
			when 'ins'
				SetStyle('u', false);
				
			when 'del'
				SetStyle('d', false);
				
			when 'b', 'i', 'u'
				SetStyle(tag, false);
				
			when 'a'
				@href = nil;
				
			when 'p'
				Ln();
				
			when 'sup'
				currentfont_size = @font_size;
				SetFontSize(@tempfontsize);
				@tempfontsize = @font_size_pt;
				SetXY(GetX(), GetY() - ((currentfont_size - @font_size)*(@@k_small_ratio)));
				
			when 'sub'
				currentfont_size = @font_size;
				SetFontSize(@tempfontsize);
				@tempfontsize = @font_size_pt;
				SetXY(GetX(), GetY() + ((currentfont_size - @font_size)*(@@k_small_ratio)));
				
			when 'small'
				currentfont_size = @font_size;
				SetFontSize(@tempfontsize);
				@tempfontsize = @font_size_pt;
				SetXY(GetX(), GetY() - ((@font_size - currentfont_size)/3));
				
			when 'font'
				if (@issetcolor == true)
					SetTextColor(@prevtext_color[0], @prevtext_color[1], @prevtext_color[2]);
				end
				if (@issetfont)
					@font_family = @prevfont_family;
					@font_style = @prevfont_style;
					SetFont(@font_family);
					@issetfont = false;
				end
				currentfont_size = @font_size;
				SetFontSize(@tempfontsize);
				@tempfontsize = @font_size_pt;
				#@text_color = @prevtext_color;
				@lasth = @font_size * @@k_cell_height_ratio;
				
			when 'blockquote'
			  @quote_count -= 1
				if (@quote_page[@quote_count] == @page)
					Line(@l_margin - 1, @quote_top[@quote_count], @l_margin - 1, @y)  # quoto line
				else
					cur_page = @page;
					cur_y = @y;
					@page = @quote_page[@quote_count];
					if (@quote_top[@quote_count] < @page_break_trigger)
						Line(@l_margin - 1, @quote_top[@quote_count], @l_margin - 1, @page_break_trigger)  # quoto line
					end
					@page += 1;
					while @page < cur_page
						Line(@l_margin - 1, @t_margin, @l_margin - 1, @page_break_trigger)  # quoto line
						@page += 1;
					end
					@y = cur_y;
					Line(@l_margin - 1, @t_margin, @l_margin - 1, @y)  # quoto line
				end
				if (@quote_count <= 0)
					SetStyle('i', false);
					@l_margin -= 5;
				else
					@l_margin -= 5 / 2;
				end
				@x = @l_margin;
				Ln() if @quote_count == 0

			when 'ul', 'ol'
			  @li_count -= 1
				if @li_state == true
					Ln();
			  	@li_state = false;
				end
				
			when 'li'
				@li_spacer = "";
				if @li_state == true
					Ln();
			  	@li_state = false;
				end
				
			when 'h1', 'h2', 'h3', 'h4', 'h5', 'h6'
				SetFontSize(@tempfontsize);
				@tempfontsize = @font_size_pt;
				SetStyle('b', false);
				Ln();
				@lasth = @font_size * @@k_cell_height_ratio;
				
				if tag == 'h1' or tag == 'h2' or tag == 'h3' or tag == 'h4'
					margin = 1;
					hrWidth = @w - @l_margin - @r_margin - margin;
					if tag == 'h1' or tag == 'h2'
						SetLineWidth(0.2);
					else
						SetLineWidth(0.1);
					end
					Line(@x + margin, @y, @x + hrWidth, @y);
				end
		end
	end
	
	#
	# Sets font style.
	# @param string :tag tag name (in lowercase)
	# @param boolean :enable
	# @access private
	#
	def SetStyle(tag, enable)
		#Modify style and select corresponding font
		['b', 'i', 'u', 'd'].each do |s|
			if tag.downcase == s
				if enable
					@style << s if ! @style.include?(s)
				else
					@style = @style.gsub(s,'')
				end
			end
		end
		SetFont('', @style);
	end
	
	#
	# Output anchor link.
	# @param string :url link URL
	# @param string :name link name
	# @param int :fill Indicates if the cell background must be painted (1) or transparent (0). Default value: 0.
	# @access public
	#
	def addHtmlLink(url, name, fill=0)
		#Put a hyperlink
		SetTextColor(0, 0, 255);
		SetStyle('u', true);
		Write(@lasth, name, url, fill);
		SetStyle('u', false);
		SetTextColor(0);
	end
	
	#
	# Returns an associative array (keys: R,G,B) from 
	# a hex html code (e.g. #3FE5AA).
	# @param string :color hexadecimal html color [#rrggbb]
	# @return array
	# @access private
	#
	def convertColorHexToDec(color = "#000000")
		tbl_color = {}
		tbl_color['R'] = color[1,2].hex.to_i;
		tbl_color['G'] = color[3,2].hex.to_i;
		tbl_color['B'] = color[5,2].hex.to_i;
		return tbl_color;
	end
	
	#
	# Converts pixels to millimeters in 72 dpi.
	# @param int :px pixels
	# @return float millimeters
	# @access private
	#
	def pixelsToMillimeters(px)
		return px.to_f * 25.4 / 72;
	end
		
	#
	# Reverse function for htmlentities.
	# Convert entities in UTF-8.
	#
	# @param :text_to_convert Text to convert.
	# @return string converted
	#
	def unhtmlentities(string)
	  if @@decoder.nil?
      CGI.unescapeHTML(string)
    else
  	  @@decoder.decode(string)
    end
  end
  
end # END OF CLASS

#TODO 2007-05-25 (EJM) Level=0 - 
#Handle special IE contype request
# if (!_SERVER['HTTP_USER_AGENT'].nil? and (_SERVER['HTTP_USER_AGENT']=='contype'))
# 	header('Content-Type: application/pdf');
# 	exit;
# }