Class: Prawn::SwissQRBill::Specifications

Inherits:
Object
  • Object
show all
Defined in:
lib/prawn/swiss_qr_bill/specifications.rb

Overview

Access common style specifications according to the style guide.

Reference: www.paymentstandards.ch/dam/downloads/style-guide-en.pdf

Defined Under Namespace

Classes: Spec

Constant Summary collapse

SPECS_FILE = 
'specs.yml'
DEFAULTS = 
{
  point: Spec.new(nil, ->(v) { from_mm(v) }),
  width: Spec.new(nil, ->(v) { from_mm(v) }),
  height: Spec.new(nil, ->(v) { from_mm(v) }),
  content_font_size: Spec.new,
  content_font_leading: Spec.new(0),
  content_font_style: Spec.new(:normal, ->(v) { v.to_sym }),
  label_font_size: Spec.new,
  label_font_leading: Spec.new(0),
  label_font_style: Spec.new(:bold, ->(v) { v.to_sym })
}.freeze

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Specifications

Returns a new instance of Specifications.



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# File 'lib/prawn/swiss_qr_bill/specifications.rb', line 28

def initialize
  # OPTIMIZE: unnessecary assignement
  @specs = load_specs
end

Class Method Details

.from_mm(value) ⇒ Object

Transform a value or an array of values from mm to pt



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# File 'lib/prawn/swiss_qr_bill/specifications.rb', line 57

def self.from_mm(value)
  case value
  when Numeric
    value.mm
  when Array
    value.map(&:mm)
  else
    value
  end
end

Instance Method Details

#get(spec_key) ⇒ Object 



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# File 'lib/prawn/swiss_qr_bill/specifications.rb', line 33

def get(spec_key)
  @specs.dig(*key_path(spec_key)) || {}
end

#get_specs(spec_key) ⇒ Object 



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# File 'lib/prawn/swiss_qr_bill/specifications.rb', line 37

def get_specs(spec_key)
  # get hash from yaml by path
  spec_values = get(spec_key)

  values = {}
  DEFAULTS.each_key do |key|
    # set defaults
    values[key] = DEFAULTS[key].default
    # overwrite if set
    values[key] = spec_values[key.to_s] if spec_values.key?(key.to_s)
    # format
    values[key] = DEFAULTS[key][:format].call(values[key]) if DEFAULTS[key][:format].is_a?(Proc)
  end

  spec_values = values.values_at(*DEFAULTS.keys)

  Struct.new(*DEFAULTS.keys).new(*spec_values)
end