Class: Easyzpl::LabelTemplate

Inherits:
Label
  • Object
show all
Defined in:
lib/easyzpl/label_template.rb

Overview

This is the label template object This gets uploaded and saved on the printer

Instance Attribute Summary collapse

Attributes inherited from Label

#field_orientation, #invert, #label_data, #label_height, #label_width, #pdf, #pdf_dpi, #printer_dpi, #quantity

Instance Method Summary collapse

Methods inherited from Label

#bar_code_39, #bar_code_pdf417, #change_quantity, #draw_border, #home_position, #text_field, #to_pdf, #to_s

Constructor Details

#initialize(name, params = {}) ⇒ LabelTemplate

Called when the new method is invoked



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# File 'lib/easyzpl/label_template.rb', line 15

def initialize(name, params = {})
  return if name.nil?
  return if name.strip.empty?

  # Set the DPIs
  self.pdf_dpi = 72
  self.printer_dpi = params[:dots]

  # Set the field orientation
  self.field_orientation = params[:field_orientation]

  # Set the number of variable fields
  self.variable_fields_count = 0

  # Create the array that will hold the data
  self.label_data = []

  # Set the default quantity to one
  self.quantity = 1

  # See if invert is set to true
  self.invert = params[:invert]

  # The start of the label
  label_data.push('^XA')
  label_data.push('^POI') if invert
  label_data.push('^LT' + Integer(params[:offset] * printer_dpi).to_s) unless params[:offset].nil?
  label_data.push('^LL' + Integer(params[:height] * printer_dpi).to_s) unless params[:height].nil?
  label_data.push('^PW' + Integer(params[:width] * printer_dpi).to_s) unless params[:width].nil?
  label_data.push('^FWB') if field_orientation == :landscape
  label_data.push('^DF' + name + '^FS')

  # init_prawn(params)
end

Instance Attribute Details

#variable_fields_count ⇒ Object

Returns the value of attribute variable_fields_count.



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# File 'lib/easyzpl/label_template.rb', line 12

def variable_fields_count
  @variable_fields_count
end

Instance Method Details

#variable_bar_code_39(x, y, params = {}) ⇒ Object

Sets a variable bar code that can be recalled



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# File 'lib/easyzpl/label_template.rb', line 82

def variable_bar_code_39(x, y, params = {})
  x = 0 unless numeric?(x)
  y = 0 unless numeric?(y)
  options = { height: 0.1, width: 0.1 }.merge!(params)

  # update the variable field count
  self.variable_fields_count += 1

  label_data.push('^FO' + Integer(x * printer_dpi).to_s + ',' +
                  Integer(y * printer_dpi).to_s)
  label_data.push('^BY2,2,100')

  if params[:orientation] == :landscape
    label_data.push('^B3B,')
  else
    label_data.push('^B3N,')
  end

  label_data.push('Y,' + Integer(options[:height] * printer_dpi).to_s +
                  ',N,N^FN' + variable_fields_count.to_s + '^FS')

  # return unless label_height && label_width
  # options = { height: 20 }.merge(params)
  # draw_bar_code_39('VARIABLEFIELD' + variable_fields_count.to_s,
  #                  Integer(x * pdf_dpi), Integer(y * pdf_dpi),
  #                  Integer(options[:height] * pdf_dpi))
end

#variable_bar_code_pdf417(x, y, params = {}) ⇒ Object

This creates a PDF417 bar code, which is very common in the automotive industry. The format is as follows: ^B7o,h,s,c,r,t o = Orientation

N - normal, R rotated 90 degrees clockwise, I inverted 180 degrees
B - Read from bottom up 270 degrees

h = height for individual rows in dots



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# File 'lib/easyzpl/label_template.rb', line 117

def variable_bar_code_pdf417(x, y, params = {})
  x = 0 unless numeric?(x)
  y = 0 unless numeric?(y)
  options = { height: 0.1, width: 0.1 }.merge!(params)

  # update the variable field count
  self.variable_fields_count += 1

  label_data.push('^FO' + Integer(x * printer_dpi).to_s + ',' +
                  Integer(y * printer_dpi).to_s)

  if params[:orientation] == :landscape
    label_data.push('^B7B,')
  else
    label_data.push('^B7N,')
  end

  label_data.push((printer_dpi / 5).to_s + ',0,' + 5.to_s + ',' + 8.to_s +
                  ',N^FN' + variable_fields_count.to_s + '^FS')
end

#variable_text_field(x, y, params = {}) ⇒ Object

Sets a variable field that can be recalled



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# File 'lib/easyzpl/label_template.rb', line 51

def variable_text_field(x, y, params = {})
  x = 0 unless numeric?(x)
  y = 0 unless numeric?(y)
  options = { height: 0.1, width: 0.1 }.merge!(params)

  # update the variable field count
  self.variable_fields_count += 1

  label_data.push('^FO' + Integer(x * printer_dpi).to_s + ',' +
                  Integer(y * printer_dpi).to_s)

  if params[:orientation] == :landscape
    label_data.push('^AFB,')
  else
    label_data.push('^AFN,')
  end

  label_data.push(Integer(options[:height] * printer_dpi).to_s + ',' +
                  Integer(options[:width] * printer_dpi).to_s +
                   '^FN' + variable_fields_count.to_s + '^FS')

  # return unless label_height > 0 && label_width > 0
  # pdf.text_box '{Variable Field ' + variable_fields_count.to_s + '}',
  #              at: [Integer(x * pdf_dpi), Integer(label_width * pdf_dpi) -
  #              Integer(y * pdf_dpi) -
  #              Integer(options[:height] / 10) * pdf_dpi],
  #              size: Integer(options[:height] * pdf_dpi) if label_height &&
  #              label_width
end