Class: PrawnCharts::RendererAssistant

Inherits:
Object
  • Object
show all
Defined in:
lib/prawn_charts/renderer_assistant.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(input) ⇒ RendererAssistant

Returns a new instance of RendererAssistant.



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# File 'lib/prawn_charts/renderer_assistant.rb', line 5

def initialize(input)
  @input = input
end

Instance Attribute Details

#input ⇒ Object (readonly)

Parses input data and responds with smart defaults or user specified data



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# File 'lib/prawn_charts/renderer_assistant.rb', line 4

def input
  @input
end

Instance Method Details

#collector ⇒ Object 



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# File 'lib/prawn_charts/renderer_assistant.rb', line 9

def collector
  @collector ||= DataCollector.new(input.fetch(:graph))
end

#components_to_draw ⇒ Object 



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# File 'lib/prawn_charts/renderer_assistant.rb', line 13

def components_to_draw
  available_components = [:rectangle_border, :rectangle_fill, :line, :dots, :x_labels, :y_labels, :horizontal_lines, :graph_title, :y_title, :x_title]
  specified_components = [:rectangle_border, :rectangle_fill, :line] + @input.keys
  @components_to_draw = available_components & specified_components
end

#dot_radius ⇒ Object

dots



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# File 'lib/prawn_charts/renderer_assistant.rb', line 20

def dot_radius
  return default_dot_radius unless input.dig(:dots, :radius)
  input[:dots][:radius]
end

#graph_title ⇒ Object 



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# File 'lib/prawn_charts/renderer_assistant.rb', line 30

def graph_title
  raise "Graph must have title" unless input.dig(:graph_title, :title)
  input[:graph_title][:title]
end

#graph_title_options ⇒ Object 



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# File 'lib/prawn_charts/renderer_assistant.rb', line 35

def graph_title_options
  return default_graph_title_options unless input.dig(:graph_title, :text_box_options)
  input[:graph_title][:text_box_options]
end

#graph_title_translate ⇒ Object

graph_title



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# File 'lib/prawn_charts/renderer_assistant.rb', line 26

def graph_title_translate
  [0, collector.height + offset(:graph_title, default_graph_title_offset)]
end

#x_labels_offset ⇒ Object

x_labels



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# File 'lib/prawn_charts/renderer_assistant.rb', line 71

def x_labels_offset
  offset(:x_labels, default_x_labels_offset)
end

#x_labels_options ⇒ Object 



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# File 'lib/prawn_charts/renderer_assistant.rb', line 75

def x_labels_options
  return default_x_labels_options unless input.dig(:x_labels, :text_box_options)
  input[:x_labels][:text_box_options]
end

#x_title ⇒ Object 



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# File 'lib/prawn_charts/renderer_assistant.rb', line 45

def x_title
  raise "Graph must have title" unless input.dig(:x_title, :title)
  input[:x_title][:title]
end

#x_title_options ⇒ Object 



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# File 'lib/prawn_charts/renderer_assistant.rb', line 50

def x_title_options
  return default_x_title_options unless input.dig(:x_title, :text_box_options)
  input[:x_title][:text_box_options]
end

#x_title_translate ⇒ Object

x_title



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# File 'lib/prawn_charts/renderer_assistant.rb', line 41

def x_title_translate
  [0, offset(:x_title, default_x_title_offset)]
end

#y_labels_offset ⇒ Object

y_labels



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# File 'lib/prawn_charts/renderer_assistant.rb', line 81

def y_labels_offset
  offset(:y_labels, default_y_labels_offset)
end

#y_labels_options ⇒ Object 



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# File 'lib/prawn_charts/renderer_assistant.rb', line 85

def y_labels_options
  return default_y_labels_options unless input.dig(:y_labels, :text_box_options)
  default_y_labels_options.merge(input[:y_labels][:text_box_options])
end

#y_title ⇒ Object 



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# File 'lib/prawn_charts/renderer_assistant.rb', line 60

def y_title
  raise "Graph must have title" unless input.dig(:y_title, :title)
  input[:y_title][:title]
end

#y_title_options ⇒ Object 



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# File 'lib/prawn_charts/renderer_assistant.rb', line 65

def y_title_options
  return default_y_title_options unless input.dig(:y_title, :text_box_options)
  input[:y_title][:text_box_options]
end

#y_title_translate ⇒ Object

y_title



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# File 'lib/prawn_charts/renderer_assistant.rb', line 56

def y_title_translate
  [offset(:y_title, default_y_title_offset), 0]
end