Class: Chart::Pie

Inherits:
Base
  • Object
show all
Defined in:
lib/chart/pie.rb

Instance Attribute Summary

Attributes inherited from Base

#angle, #colors, #data, #extra_fields, #height, #inside, #label_format, #labels, #legend, #line_width, #margins, #multicolor, #object, #plot_area, #plot_top_margin, #position, #radius, #style, #symbols, #width

Instance Method Summary collapse

Methods inherited from Base

#helper, #initialize, #write

Constructor Details

This class inherits a constructor from Chart::Base

Instance Method Details

#generate ⇒ Object 



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# File 'lib/chart/pie.rb', line 8

def generate
  # set the pie size and position
  @object.setPieSize(@margins[0], @margins[1], @radius)
  
  # set data and labels
  @object.setData(@data, @legend)
  
  # set label format
  @object.setLabelFormat(@label_format)
  
  # hide label format if is nil
  @object.setLabelStyle("normal", 8, ChartDirector::Transparent) if @label_format.nil?
  
  # add legend box
  @object.addLegend(@position[0], @position[1])
  
  # set colors
  @object.setColors2(ChartDirector::DataColor, @colors)
  
  # set label position
  @object.setLabelPos(15, ChartDirector::LineColor)
  
  # set label line color
  @object.setJoinLine(0x666666)
end

#instantiate ⇒ Object 



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# File 'lib/chart/pie.rb', line 3

def instantiate
  # instantiate a new chart
  @object = ChartDirector::PieChart.new(@width, @height) if @width && @height
end