Class: MultiMovingsign::PageSegment

Inherits:
Object
  • Object
show all
Defined in:
lib/multi_movingsign/page_renderer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(title, line_definitions) ⇒ PageSegment

Returns a new instance of PageSegment.



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# File 'lib/multi_movingsign/page_renderer.rb', line 168

def initialize(title, line_definitions)
  self.title = title
  self.line_definitions = line_definitions
end

Instance Attribute Details

#line_definitions ⇒ Object

Returns the value of attribute line_definitions.



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# File 'lib/multi_movingsign/page_renderer.rb', line 166

def line_definitions
  @line_definitions
end

#title ⇒ Object

Returns the value of attribute title.



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# File 'lib/multi_movingsign/page_renderer.rb', line 165

def title
  @title
end

Instance Method Details

#calculate_screens(number_of_signs, sign_width) ⇒ Object

Turns a single page segment into n rendered screens of information



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# File 'lib/multi_movingsign/page_renderer.rb', line 182

def calculate_screens(number_of_signs, sign_width)
  raise "Title too long!" if title? && PageRenderer.calculate_width(title) >  sign_width

  if title? && !line_definitions?
    return Screen.new [title]
  end

  screens = []

  #puts line_definitions.map { |d| d.line_segments.map { |s| s.split_if_necessary(sign_width).map { |s| s.to_s} } }.inspect

  num_of_line_segments = line_definitions.map { |d| d.line_segments.length }.max
  (0..(num_of_line_segments - 1)).each do |segment_index|
    subsegments = line_definitions.map { |d| (s = d.line_segments[segment_index]) ? s.split_if_necessary(sign_width) : [] }
    num_of_subsegments = subsegments.map { |s| s.length }.max

    (0..(num_of_subsegments-1)).each do |subsegment_index|
      lines = []

      lines << title if title?
      lines.concat subsegments.map { |s| s[subsegment_index % s.length] || "" }

      screens << Screen.new(lines)
    end
  end

  screens
end

#line_definitions? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/multi_movingsign/page_renderer.rb', line 177

def line_definitions?
  !self.line_definitions.empty?
end

#title? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/multi_movingsign/page_renderer.rb', line 173

def title?
  !!self.title
end