Adding SVG support

lib/squib/api/image.rb

@@ -1,11 +1,17 @@
 module Squib
   class Deck
     
-    def png(range=:all, file: nil, x: 0, y: 0)
+    def png(range: :all, file: nil, x: 0, y: 0)
       range = rangeify(range)
       file = fileify(file)
       range.each{ |i| @cards[i].png(file, x, y) }
     end
 
+    def svg(range: :all, file: nil, x: 0, y: 0)
+      range = rangeify(range)
+      file = fileify(file)
+      range.each{ |i| @cards[i].svg(file, x, y) }
+    end
+
   end
 end

lib/squib/deck.rb

@@ -27,6 +27,9 @@ module Squib
     def rangeify (range)
       range = 0..(@cards.size-1) if range == :all
       range = range..range if range.is_a? Integer
+      if range.max > (@cards.size-1)
+        raise "#{range} is outside of deck range of 0..#{@card.size-1}"
+      end
       return range
     end
 

lib/squib/graphics/image.rb

@@ -8,5 +8,15 @@ module Squib
       cc.paint
     end
 
+    def svg(file, x, y)
+      require 'rsvg2'
+      svg = RSVG::Handle.new_from_file(file)
+      tmp = Cairo::ImageSurface.new(svg.width, svg.height)
+      tmp_cc = Cairo::Context.new(tmp)
+      tmp_cc.render_rsvg_handle(svg, width: 400, height: 400)
+      cairo_context.set_source(tmp, x, y)
+      cairo_context.paint
+    end
+
   end
 end