Class: Charts::Grid::GridLine

Inherits:
Object
  • Object
show all
Defined in:
lib/charts/bar_chart/grid/grid_line.rb

Direct Known Subclasses

HorizontalGridLine, VerticalGridLine

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(chart, value) ⇒ GridLine

Returns a new instance of GridLine.



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# File 'lib/charts/bar_chart/grid/grid_line.rb', line 4

def initialize(chart, value)
  @chart = chart
  @value = value
end

Instance Attribute Details

#chart ⇒ Object

Returns the value of attribute chart.



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# File 'lib/charts/bar_chart/grid/grid_line.rb', line 2

def chart
  @chart
end

#value ⇒ Object

Returns the value of attribute value.



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# File 'lib/charts/bar_chart/grid/grid_line.rb', line 2

def value
  @value
end

Instance Method Details

#draw ⇒ Object 



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# File 'lib/charts/bar_chart/grid/grid_line.rb', line 9

def draw
  chart.renderer.line x1, y1, x2, y2, chart.renderer.grid_line_style
  chart.renderer.text label_text, label_x, label_y, label_style
end

#label_text ⇒ Object 



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# File 'lib/charts/bar_chart/grid/grid_line.rb', line 38

def label_text
  if chart.spread_order_of_magnitude <= 0
    value.to_f
  else
    value
  end
end

#label_x ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/charts/bar_chart/grid/grid_line.rb', line 30

def label_x
  raise NotImplementedError
end

#label_y ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/charts/bar_chart/grid/grid_line.rb', line 34

def label_y
  raise NotImplementedError
end

#x1 ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/charts/bar_chart/grid/grid_line.rb', line 14

def x1
  raise NotImplementedError
end

#x2 ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/charts/bar_chart/grid/grid_line.rb', line 18

def x2
  raise NotImplementedError
end

#y1 ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/charts/bar_chart/grid/grid_line.rb', line 22

def y1
  raise NotImplementedError
end

#y2 ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/charts/bar_chart/grid/grid_line.rb', line 26

def y2
  raise NotImplementedError
end