From 61a5ebb5d532a6fdaaa94b470aa39bdc14b392c4 Mon Sep 17 00:00:00 2001
From: Miguel Vazquez <miguel.vazquez@cnio.es>
Date: Mon, 8 Jul 2013 15:49:09 +0200
Subject: [PATCH] Allow arbitrary params in SVG objects

---
 lib/bio/graphics/mini_feature.rb | 5 +++--
 lib/bio/graphics/page.rb         | 5 +++--
 lib/bio/graphics/svgee.rb        | 7 +++++--
 3 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/lib/bio/graphics/mini_feature.rb b/lib/bio/graphics/mini_feature.rb
index 55c80b4..27d8a83 100644
--- a/lib/bio/graphics/mini_feature.rb
+++ b/lib/bio/graphics/mini_feature.rb
@@ -5,7 +5,7 @@ class Graphics
     #A Bio::Graphics::MiniFeature object represents a single genomic feature (e.g. a gene, transcript, exon, start codon, etc), it is a lightweight object that 
     #holds the minimum information needed to do the render.
 class MiniFeature
-  attr_accessor :start, :end, :strand, :exons, :utrs, :block_gaps, :segment_height, :id
+  attr_accessor :start, :end, :strand, :exons, :utrs, :block_gaps, :segment_height, :id, :params
   #Creates a new MiniFeature
   #
   #== args
@@ -41,8 +41,9 @@ def initialize(args)
     @block_gaps = []
     @id = args[:id]
     @segment_height = args[:segment_height]
+    @params = args[:params]
   end
 end
 
 end
-end
\ No newline at end of file
+end
diff --git a/lib/bio/graphics/page.rb b/lib/bio/graphics/page.rb
index 64017a5..9153f46 100644
--- a/lib/bio/graphics/page.rb
+++ b/lib/bio/graphics/page.rb
@@ -358,7 +358,8 @@ def draw_features(track)
                                               :exons => f.exons,
                                               :utrs => f.utrs,
                                               :block_gaps => f.block_gaps,
-                                              :height => track.feature_height
+                                              :height => track.feature_height,
+                                              :params => f.params
             }.merge!(track.args))
 
             if f.id
@@ -398,4 +399,4 @@ def write(file)
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/lib/bio/graphics/svgee.rb b/lib/bio/graphics/svgee.rb
index 5f9cf3c..bc37860 100644
--- a/lib/bio/graphics/svgee.rb
+++ b/lib/bio/graphics/svgee.rb
@@ -81,7 +81,10 @@ def text_tag(a = {})
   end
   
   def common_attributes(a={})
-    %{stroke="#{a[:stroke]}" stroke-width="#{a[:stroke_width]}" style="#{a[:style]}"}
+    param_str = ""
+    a[:params].each{|k,v| param_str << %{ #{k}="#{v}"}} if a[:params]
+
+    %{stroke="#{a[:stroke]}" stroke-width="#{a[:stroke_width]}" style="#{a[:style]}"} + param_str
   end
   
   def method_missing(primitive, args={}) #only used to dynamically select the primitive type.. 
@@ -142,4 +145,4 @@ def draw
 s.add_primitive(prim)  #add one of the returned, updated Primitive objects 
 
 s.draw
-=end
\ No newline at end of file
+=end