Class: Zebra::Zpl::Label

Inherits:
Object
  • Object
show all
Defined in:
lib/zebra/zpl/label.rb

Defined Under Namespace

Classes: InvalidPrintDensityError, InvalidPrintSpeedError, PrintSpeedNotInformedError

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Label

Returns a new instance of Label.



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# File 'lib/zebra/zpl/label.rb', line 14

def initialize(options = {})
  options.each_pair { |key, value| self.__send__("#{key}=", value) if self.respond_to?("#{key}=") }
  @elements = []
end

Instance Attribute Details

#copies ⇒ Object 



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# File 'lib/zebra/zpl/label.rb', line 34

def copies
  @copies || 1
end

#elements ⇒ Object (readonly)

Returns the value of attribute elements.



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# File 'lib/zebra/zpl/label.rb', line 11

def elements
  @elements
end

#gap ⇒ Object

Returns the value of attribute gap.



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# File 'lib/zebra/zpl/label.rb', line 12

def gap
  @gap
end

#length ⇒ Object

Returns the value of attribute length.



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# File 'lib/zebra/zpl/label.rb', line 12

def length
  @length
end

#print_density ⇒ Object

Returns the value of attribute print_density.



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# File 'lib/zebra/zpl/label.rb', line 12

def print_density
  @print_density
end

#print_speed ⇒ Object

Returns the value of attribute print_speed.



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# File 'lib/zebra/zpl/label.rb', line 12

def print_speed
  @print_speed
end

#tempfile ⇒ Object (readonly)

Returns the value of attribute tempfile.



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# File 'lib/zebra/zpl/label.rb', line 11

def tempfile
  @tempfile
end

#width ⇒ Object

Returns the value of attribute width.



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# File 'lib/zebra/zpl/label.rb', line 12

def width
  @width
end

Instance Method Details

#<<(element) ⇒ Object 



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# File 'lib/zebra/zpl/label.rb', line 38

def <<(element)
  element.width = self.width
  elements << element
end

#dump_contents(io = STDOUT) ⇒ Object 



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# File 'lib/zebra/zpl/label.rb', line 43

def dump_contents(io = STDOUT)
  check_required_configurations
  # Start format
  io << "^XA"
  # ^LL<label height in dots>,<space between labels in dots>
  # io << "^LL#{length},#{gap}\n" if length && gap
  io << "^LL#{length}" if length
  # ^LH<label home - x,y coordinates of top left label>
  io << "^LH0,0"
  # ^LS<shift the label to the left(or right)>
  io << "^LS10"
  # ^PW<label width in dots>
  io << "^PW#{width}" if width
  # Print Rate(speed) (^PR command)
  io << "^PR#{print_speed}"
  # Density (D command) "Carried over from EPL, does this exist in ZPL ????"
  # io << "D#{print_density}\n" if print_density

  # TEST ZPL (comment everything else out)...
  # io << "^XA^WD*:*.FNT*^XZ"
  # TEST ZPL SEGMENT
  # io << "^WD*:*.FNT*"
  # TEST AND GET CONFIGS
  # io << "^HH"

  elements.each do |element|
    io << element.to_zpl
  end
  # Specify how many copies to print
  io << "^PQ#{copies}"
  # End format
  io << "^XZ"
end

#length_and_gap=(length_and_gap) ⇒ Object 



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# File 'lib/zebra/zpl/label.rb', line 19

def length_and_gap=(length_and_gap)
  self.length = length_and_gap[0]
  self.gap    = length_and_gap[1]
end

#persist ⇒ Object 



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# File 'lib/zebra/zpl/label.rb', line 77

def persist
  # debugger
  tempfile = Tempfile.new "zebra_label"
  dump_contents tempfile
  tempfile.close
  @tempfile = tempfile
  tempfile
end

#persisted? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/zebra/zpl/label.rb', line 86

def persisted?
  !!self.tempfile
end