Class: RubyEscPos

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby-escpos.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ RubyEscPos

Returns a new instance of RubyEscPos.



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# File 'lib/ruby-escpos.rb', line 4

def initialize
  @buffer = ''
end

Instance Attribute Details

#buffer ⇒ Object

Returns the value of attribute buffer.



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# File 'lib/ruby-escpos.rb', line 2

def buffer
  @buffer
end

Instance Method Details

#barcode(code, width = 64, height = 64, bc = BARCODE_UPC_A, pos = BARCODE_TXT_OFF, font = nil) ⇒ Object 



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# File 'lib/ruby-escpos.rb', line 80

def barcode(code, width = 64, height = 64, bc = BARCODE_UPC_A, pos = BARCODE_TXT_OFF, font = nil)
  write TXT_ALIGN_CT
  write pos
  write font
  write bc
  write code
end

#cut(cut_type = PAPER_FULL_CUT) ⇒ Object 



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# File 'lib/ruby-escpos.rb', line 96

def cut(cut_type = PAPER_FULL_CUT)
  write "\n\n\n\n\n\n"
  write cut_type
end

#new_line(lines = 1) ⇒ Object 



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# File 'lib/ruby-escpos.rb', line 8

def new_line(lines = 1)
  text nil, lines
end

#set(align = TXT_ALIGN_LT, font = TXT_FONT_A, font_type = FONT_TYPE_NORMAL, width = 1, height = 1, density = nil) ⇒ Object 



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# File 'lib/ruby-escpos.rb', line 40

def set(align = TXT_ALIGN_LT, font = TXT_FONT_A, font_type = FONT_TYPE_NORMAL, width = 1, height = 1, density = nil)
  write align

  if height == 2 && width == 2
    write TXT_NORMAL
    write TXT_4SQUARE
  elsif height == 2 && width != 2
    write TXT_NORMAL
    write TXT_2HEIGHT
  elsif width == 2 && height != 2
    write TXT_NORMAL
    write TXT_2WIDTH
  else
    write TXT_NORMAL
  end

  if font_type == FONT_TYPE_BOLD
    write TXT_BOLD_ON
    write TXT_UNDERL_OFF
  elsif font_type == FONT_TYPE_UNDERLINE
    write TXT_BOLD_OFF
    write TXT_UNDERL_ON
  elsif font_type == FONT_TYPE_UNDERLINE_2
    write TXT_BOLD_OFF
    write TXT_UNDERL2_ON
  elsif font_type == FONT_TYPE_BOLD_UNDERLINE
    write TXT_BOLD_ON
    write TXT_UNDERL_ON
  elsif font_type == FONT_TYPE_BOLD_UNDERLINE_2
    write TXT_BOLD_ON
    write TXT_UNDERL2_ON
  else
    write TXT_BOLD_OFF
    write TXT_UNDERL_OFF
  end

  write font
  write density if density
end

#style(style, align) ⇒ Object 



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# File 'lib/ruby-escpos.rb', line 12

def style(style, align)
  if style == :header
    style = STYLE_HEADER
  elsif style == :subheader
    style = STYLE_SUBHEADER
  elsif style == :normal
    style = STYLE_NORMAL
  elsif style == :footer
    style = STYLE_FOOTER
  end

  if align == :left
    align = TXT_ALIGN_LT
  elsif align == :center
    align = TXT_ALIGN_CT
  elsif align == :right
    align = TXT_ALIGN_RT
  end

  set(
    align,
    style[:font],
    style[:font_type],
    style[:width],
    style[:height]
  )
end

#text(txt, new_lines = 1) ⇒ Object 



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# File 'lib/ruby-escpos.rb', line 88

def text(txt, new_lines = 1)
  @buffer += txt if txt

  (1..new_lines).each do
    @buffer += "\n"
  end
end