Class: DotGraphFormatter

Inherits:
Object show all
Defined in:
lib/rpdf2txt-rockit/graphviz_dot.rb

Constant Summary collapse

@@default_node_shaper = 
proc{|n| "box"}
@@default_node_labeler = 
proc{|n| n.inspect}
proc{|info| info ? info.inspect : nil}

Instance Method Summary collapse

Constructor Details

#initialize(nodeShaper = nil, nodeLabeler = nil, linkLabeler = nil, size = "11,9", orientation = "landscape") ⇒ DotGraphFormatter

Returns a new instance of DotGraphFormatter.



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# File 'lib/rpdf2txt-rockit/graphviz_dot.rb', line 6

def initialize(nodeShaper = nil, nodeLabeler = nil, linkLabeler = nil,
 size = "11,9", orientation = "landscape")
  @node_shaper = nodeShaper || @@default_node_shaper
  @node_labeler = nodeLabeler || @@default_node_labeler
  @link_labeler = linkLabeler || @@default_link_labeler
  @size, @orientation = size, orientation
end

Instance Method Details

#format(nodes, links) ⇒ Object

nodes is array of node objects links is either array of 

arrays [fromNode, toNode [, infoOnLink]], or
objects with attributes :from, :to, :info



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# File 'lib/rpdf2txt-rockit/graphviz_dot.rb', line 18

def format(nodes, links)
  DotGraph.new("digraph G {\n" +
   "size = #{@size.inspect}\n" +
   "orientation = #{@orientation}\n" +
   nodes.uniq.map {|n| format_node(n)}.join("\n") + "\n" +
   links.uniq.map {|l| format_link(l)}.join("\n") + "\n" +
 "}"
 )
end