Class: Scruffy::Layers::Line

Inherits:
Base
  • Object
show all
Defined in:
lib/scruffy/layers/line.rb

Overview

Scruffy::Layers::Line

Author

Brasten Sager

Date

August 7th, 2006

Line graph.

Instance Attribute Summary

Attributes inherited from Base

#color, #complexity, #height, #max_value, #min_value, #opacity, #options, #points, #preferred_color, #relevant_data, #title, #width

Instance Method Summary (collapse)

Methods inherited from Base

#bottom_value, #initialize, #legend_data, #relevant_data?, #render, #sum_values, #top_value

Constructor Details

This class inherits a constructor from Scruffy::Layers::Base

Instance Method Details

- (Object) draw(svg, coords, options = {})

Renders line graph.

Options: See initialize()



14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
 
# File 'lib/scruffy/layers/line.rb', line 14

def draw(svg, coords, options={})
  
  # Include options provided when the object was created
  options.merge!(@options)
  
  stroke_width = (options[:relativestroke]) ? relative(options[:stroke_width]) : options[:stroke_width]
  style = (options[:style]) ? options[:style] : ''
  
  if options[:shadow]
    svg.g(:class => 'shadow', :transform => "translate(#{relative(0.5)}, #{relative(0.5)})") {
      svg.polyline( :points => stringify_coords(coords).join(' '), :fill => 'transparent', 
                    :stroke => 'black', 'stroke-width' => stroke_width, 
                    :style => 'fill-opacity: 0; stroke-opacity: 0.35' )
      
      if options[:dots]
        coords.each { |coord| svg.circle( :cx => coord.first, :cy => coord.last + relative(0.9), :r => stroke_width, 
                                          :style => "stroke-width: #{stroke_width}; stroke: black; opacity: 0.35;" ) }
      end
    }
  end


  svg.polyline( :points => stringify_coords(coords).join(' '), :fill => 'none', :stroke => @color.to_s, 
                'stroke-width' => stroke_width, :style => style  )
  
  if options[:dots]
    coords.each { |coord| svg.circle( :cx => coord.first, :cy => coord.last, :r => stroke_width, 
                                      :style => "stroke-width: #{stroke_width}; stroke: #{color.to_s}; fill: #{color.to_s}" ) }
  end
  
end