Class: UDRS::Renderers::ESCPRenderer

Inherits:
Base
  • Object
show all
Defined in:
lib/udrs/renderers/escp_renderer.rb,
lib/udrs/renderers/escp_renderer/font.rb,
lib/udrs/renderers/escp_renderer/line.rb,
lib/udrs/renderers/escp_renderer/table.rb

Overview

Tables

Constant Summary collapse

NUL = 
0.chr
EOT = 
4.chr
ENQ = 
5.chr
HT = 
9.chr
LF = 
10.chr
FF = 
12.chr
CR = 
13.chr
DLE = 
16.chr
DC4 = 
20.chr
CAN = 
24.chr
ESC = 
27.chr
FS = 
28.chr
GS = 
29.chr
CHARACTER_MAP = 
{
  'Ç' => "\x80",
  'ü' => "\x81",
  'é' => "\x82",
  'â' => "\x83",
  'ä' => "\x84",
  'à' => "\x85",
  'å' => "\x86",
  'ç' => "\x87",
  'ê' => "\x88",
  'ë' => "\x89",
  'è' => "\x8A",
  'ï' => "\x8B",
  'î' => "\x8C",
  'ì' => "\x8D",
  'Ä' => "\x8E",
  'Å' => "\x8F",
  'É' => "\x90",
  'æ' => "\x91",
  'Æ' => "\x92",
  'ô' => "\x93",
  'ö' => "\x94",
  'ò' => "\x95",
  'û' => "\x96",
  'ù' => "\x97",
  'ÿ' => "\x98",
  'Ö' => "\x99",
  'Ü' => "\x9A",
  'ø' => "\x9B",
  '£' => "\x9C",
  'Ø' => "\x9D",
  'á' => "\xA0",
  'í' => "\xA1",
  'ó' => "\xA2",
  'ú' => "\xA3",
  'ñ' => "\xA4",
  'Ñ' => "\xA5",
  'ª' => "\xA6",
  'º' => "\xA7",
  '¿' => "\xA8",
  '®' => "\xA9",
  '«' => "\xAE",
  '»' => "\xAF",
  '→' => "\xAF",
  'Á' => "\xB5",
  'Â' => "\xB6",
  'À' => "\xB7",
  '©' => "\xB8",
  '¢' => "\xBD",
  'ã' => "\xC6",
  'Ã' => "\xC7",
  'Ê' => "\xD2",
  'Ë' => "\xD3",
  'È' => "\xD4",
  '€' => "\xD5",
  'Í' => "\xD6",
  'Î' => "\xD7",
  'Ï' => "\xD8",
  'Ì' => "\xDE",
  'Ó' => "\xE0",
  'ß' => "\xE1",
  'Ô' => "\xE2",
  'Ò' => "\xE3",
  'õ' => "\xE4",
  'Õ' => "\xE5",
  'Ú' => "\xE9",
  'Û' => "\xEA",
  'Ù' => "\xEB",
  'ý' => "\xEC",
  'Ý' => "\xED",
}
CODE_NUM =

The code num for PDF417

48
CODE_SIZE = 
3

Instance Method Summary collapse

Methods inherited from Base

#render_item

Instance Method Details

#render(container) ⇒ Object 



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# File 'lib/udrs/renderers/escp_renderer.rb', line 99

def render(container)
  @buffer = ''
  @buffer << "#{ESC}@" # Re-init printer
  @buffer << "#{ESC}t#{19.chr}" # Reset character code table to PC858: Euro
  @buffer << "#{ESC}M#{1.chr}" # Set the font
  @buffer << "#{ESC}G#{0.chr}" # Set double-strike to off
  apply_font_size(:normal)
  apply_bold(false)
  apply_underline(:off)

  # Open the cash drawer
  @buffer << "#{ESC}p#{0.chr}#{100.chr}#{100.chr}"

  # Render the items
  @last_added = :page_end
  render_item(container)
  render_page_end(nil)

  # Replace special characters
  buffer = @buffer.dup
  CHARACTER_MAP.each do |char_orig, char_new|
    buffer.gsub!(char_orig, char_new)
  end

  return buffer
end