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#============================================================+
# File name : c39object.rb
# Begin : 2002-07-31
# Last Update : 2004-12-29
# Author : Karim Mribti [barcode@mribti.com]
# : Nicola Asuni [info@tecnick.com]
# Version : 0.0.8a 2001-04-01 (original code)
# License : GNU LGPL (Lesser General Public License) 2.1
# http://www.gnu.org/copyleft/lesser.txt
# Source Code : http://www.mribti.com/barcode/
#
# Description : Code 39 Barcode Render Class for PHP using
# the GD graphics library.
# Code 39 is an alphanumeric bar code that can
# encode decimal number, case alphabet and some
# special symbols.
#
# NOTE:
# This version contains changes by Nicola Asuni:
# - porting to Ruby
# - code style and formatting
# - automatic php documentation in PhpDocumentor Style
# (www.phpdoc.org)
# - minor bug fixing
#============================================================+
#
# Code 39 Barcode Render Class.<br>
# Code 39 is an alphanumeric bar code that can encode decimal number, case alphabet and some special symbols.
# @author Karim Mribti, Nicola Asuni
# @name BarcodeObject
# @package com.tecnick.tcpdf
# @@version 0.0.8a 2001-04-01 (original code)
# @since 2001-03-25
# @license http://www.gnu.org/copyleft/lesser.html LGPL
#
#
# Code 39 Barcode Render Class.<br>
# Code 39 is an alphanumeric bar code that can encode decimal number, case alphabet and some special symbols.
# @author Karim Mribti, Nicola Asuni
# @name BarcodeObject
# @package com.tecnick.tcpdf
# @@version 0.0.8a 2001-04-01 (original code)
# @since 2001-03-25
# @license http://www.gnu.org/copyleft/lesser.html LGPL
#
class C39Object extends BarcodeObject {
#
# Class Constructor.
# @param int $Width Image width in pixels.
# @param int $Height Image height in pixels.
# @param int $Style Barcode style.
# @param int $Value value to print on barcode.
#
def __construct($Width, $Height, $Style, $Value)
parent::__construct($Width, $Height, $Style);
@mValue = $Value;
@mChars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-.#$/+%";
@mCharSet = array (
# 0 # "000110100",
# 1 # "100100001",
# 2 # "001100001",
# 3 # "101100000",
# 4 # "000110001",
# 5 # "100110000",
# 6 # "001110000",
# 7 # "000100101",
# 8 # "100100100",
# 9 # "001100100",
# A # "100001001",
# B # "001001001",
# C # "101001000",
# D # "000011001",
# E # "100011000",
# F # "001011000",
# G # "000001101",
# H # "100001100",
# I # "001001100",
# J # "000011100",
# K # "100000011",
# L # "001000011",
# M # "101000010",
# N # "000010011",
# O # "100010010",
# P # "001010010",
# Q # "000000111",
# R # "100000110",
# S # "001000110",
# T # "000010110",
# U # "110000001",
# V # "011000001",
# W # "111000000",
# X # "010010001",
# Y # "110010000",
# Z # "011010000",
# - # "010000101",
# . # "110000100",
# SP# "011000100",
/*# # "010010100",
# $ # "010101000",
# / # "010100010",
# + # "010001010",
# % # "000101010"
);
end
#
# Returns the character index.
# @param char $char character.
# @return int character index or -1 in case of error.
# @access private
#
def GetCharIndex($char)
for ($i=0;$i<44;$i++)
if (@mChars[$i] == $char)
return $i;
end
end
return -1;
end
#
# Returns barcode size.
# @param int $xres Horizontal resolution.
# @return barcode size.
# @access private
#
def GetSize($xres)
$len = @mValue.length;
if ($len == 0) {
@mError = "Null value";
return false;
end
for ($i=0;$i<$len;$i++)
if (GetCharIndex(@mValue[$i]) == -1 || @mValue[$i] == '*')
# The asterisk is only used as a start and stop code#
@mError = "C39 not include the char '".@mValue[$i]."'";
return false;
end
end
# Start, Stop is 010010100 == '*' #
$StartSize = BCD_C39_NARROW_BAR# $xres# 6 + BCD_C39_WIDE_BAR# $xres# 3;
$StopSize = BCD_C39_NARROW_BAR# $xres# 6 + BCD_C39_WIDE_BAR# $xres# 3;
$CharSize = BCD_C39_NARROW_BAR# $xres# 6 + BCD_C39_WIDE_BAR# $xres# 3; # Same for all chars#
return $CharSize# $len + $StartSize + $StopSize + # Space between chars# BCD_C39_NARROW_BAR# $xres# ($len-1);
end
#
# Draws the start code.
# @param int $DrawPos Drawing position.
# @param int $yPos Vertical position.
# @param int $ySize Vertical size.
# @param int $xres Horizontal resolution.
# @return int drawing position.
# @access private
#
def DrawStart($DrawPos, $yPos, $ySize, $xres)
# Start code is '*'#
$narrow = BCD_C39_NARROW_BAR# $xres;
$wide = BCD_C39_WIDE_BAR# $xres;
@DrawSingleBar($DrawPos, $yPos, $narrow , $ySize);
$DrawPos += $narrow;
$DrawPos += $wide;
@DrawSingleBar($DrawPos, $yPos, $narrow , $ySize);
$DrawPos += $narrow;
$DrawPos += $narrow;
@DrawSingleBar($DrawPos, $yPos, $wide , $ySize);
$DrawPos += $wide;
$DrawPos += $narrow;
@DrawSingleBar($DrawPos, $yPos, $wide , $ySize);
$DrawPos += $wide;
$DrawPos += $narrow;
@DrawSingleBar($DrawPos, $yPos, $narrow, $ySize);
$DrawPos += $narrow;
$DrawPos += $narrow; # Space between chars#
return $DrawPos;
end
#
# Draws the stop code.
# @param int $DrawPos Drawing position.
# @param int $yPos Vertical position.
# @param int $ySize Vertical size.
# @param int $xres Horizontal resolution.
# @return int drawing position.
# @access private
#
def DrawStop($DrawPos, $yPos, $ySize, $xres)
# Stop code is '*'#
$narrow = BCD_C39_NARROW_BAR# $xres;
$wide = BCD_C39_WIDE_BAR# $xres;
@DrawSingleBar($DrawPos, $yPos, $narrow , $ySize);
$DrawPos += $narrow;
$DrawPos += $wide;
@DrawSingleBar($DrawPos, $yPos, $narrow , $ySize);
$DrawPos += $narrow;
$DrawPos += $narrow;
@DrawSingleBar($DrawPos, $yPos, $wide , $ySize);
$DrawPos += $wide;
$DrawPos += $narrow;
@DrawSingleBar($DrawPos, $yPos, $wide , $ySize);
$DrawPos += $wide;
$DrawPos += $narrow;
@DrawSingleBar($DrawPos, $yPos, $narrow, $ySize);
$DrawPos += $narrow;
return $DrawPos;
end
#
# Draws the barcode object.
# @param int $xres Horizontal resolution.
# @return bool true in case of success.
#
def DrawObject($xres)
$len = @mValue.length;
$narrow = BCD_C39_NARROW_BAR# $xres;
$wide = BCD_C39_WIDE_BAR# $xres;
if (($size = GetSize($xres))==0)
return false;
end
$cPos = 0;
if (@mStyle & BCS_ALIGN_CENTER) $sPos = (integer)((@mWidth - $size ) / 2);
elsif (@mStyle & BCS_ALIGN_RIGHT) $sPos = @mWidth - $size;
else $sPos = 0;
# Total height of bar code -Bars only-#
if (@mStyle & BCS_DRAW_TEXT) $ysize = @mHeight - BCD_DEFAULT_MAR_Y1 - BCD_DEFAULT_MAR_Y2 - GetFontHeight(@mFont);
else $ysize = @mHeight - BCD_DEFAULT_MAR_Y1 - BCD_DEFAULT_MAR_Y2;
# Draw text#
if (@mStyle & BCS_DRAW_TEXT)
if (@mStyle & BCS_STRETCH_TEXT)
for ($i=0;$i<$len;$i++)
@DrawChar(@mFont, $sPos+($narrow*6+$wide*3)+($size/$len)*$i,
$ysize + BCD_DEFAULT_MAR_Y1 + BCD_DEFAULT_TEXT_OFFSET, @mValue[$i]);
else# Center#
$text_width = GetFontWidth(@mFont)# @mValue.length;
@DrawText(@mFont, $sPos+(($size-$text_width)/2)+($narrow*6+$wide*3),
$ysize + BCD_DEFAULT_MAR_Y1 + BCD_DEFAULT_TEXT_OFFSET, @mValue);
end
end
$DrawPos = @DrawStart($sPos, BCD_DEFAULT_MAR_Y1 , $ysize, $xres);
do {
$c = GetCharIndex(@mValue[$cPos]);
$cset = @mCharSet[$c];
@DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, ($cset[0] == '0') ? $narrow : $wide , $ysize);
$DrawPos += ($cset[0] == '0') ? $narrow : $wide;
$DrawPos += ($cset[1] == '0') ? $narrow : $wide;
@DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, ($cset[2] == '0') ? $narrow : $wide , $ysize);
$DrawPos += ($cset[2] == '0') ? $narrow : $wide;
$DrawPos += ($cset[3] == '0') ? $narrow : $wide;
@DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, ($cset[4] == '0') ? $narrow : $wide , $ysize);
$DrawPos += ($cset[4] == '0') ? $narrow : $wide;
$DrawPos += ($cset[5] == '0') ? $narrow : $wide;
@DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, ($cset[6] == '0') ? $narrow : $wide , $ysize);
$DrawPos += ($cset[6] == '0') ? $narrow : $wide;
$DrawPos += ($cset[7] == '0') ? $narrow : $wide;
@DrawSingleBar($DrawPos, BCD_DEFAULT_MAR_Y1, ($cset[8] == '0') ? $narrow : $wide , $ysize);
$DrawPos += ($cset[8] == '0') ? $narrow : $wide;
$DrawPos += $narrow; # Space between chars#
$cPos += 1;
end while ($cPos<$len);
$DrawPos = @DrawStop($DrawPos, BCD_DEFAULT_MAR_Y1 , $ysize, $xres);
return true;
end
}
#============================================================+
# END OF FILE
#============================================================+
|
