Added circle shape

lib/squib/api/shapes.rb

@@ -6,6 +6,7 @@ module Squib
     # @example 
     #   rect x: 0, y: 0, width: 825, height: 1125, radius: 25
     #
+    # @option opts range [Enumerable, :all] (:all) the range of cards over which this will be rendered. See {file:API.md#label-Specifying+Ranges Specifying Ranges}
     # @option opts x [Integer] (0) the x-coordinate to place
     # @option opts y [Integer] (0) the y-coordinate to place
     # @option opts width [Integer] the width of the rectangle.
@@ -28,5 +29,29 @@ module Squib
       end
     end
 
+    # Draw a circle centered at the given coordinates
+    # 
+    # @example 
+    #   circle x: 0, y: 0, radius: 100
+    #
+    # @option opts range [Enumerable, :all] (:all) the range of cards over which this will be rendered. See {file:API.md#label-Specifying+Ranges Specifying Ranges}
+    # @option opts x [Integer] (0) the x-coordinate to place
+    # @option opts y [Integer] (0) the y-coordinate to place
+    # @option opts radius [Integer] (100) radius of the circle
+    # @option opts fill_color [String] ('#0000') the color with which to fill the rectangle
+    # @option opts stroke_color [String] (:black) the color with which to stroke the outside of the rectangle
+    # @option opts stroke_width [Decimal] (2.0) the width of the outside stroke
+    # @return [nil] intended to be void
+    # @api public
+    def circle(opts = {})
+      opts = {radius: 100}.merge(opts)
+      opts = needs(opts, [:range, :x, :y, :circle_radius, :layout,
+                          :fill_color, :stroke_color, :stroke_width])
+      opts[:range].each do |i|
+        @cards[i].circle(opts[:x], opts[:y], opts[:radius], 
+          opts[:fill_color], opts[:stroke_color], opts[:stroke_width])
+      end
+    end
+    
   end
 end

lib/squib/graphics/shapes.rb

@@ -8,12 +8,25 @@ module Squib
       cc = cairo_context
       cc.rounded_rectangle(x, y, width, height, x_radius, y_radius)
       cc.set_source_color(stroke_color)
-      cc.set_line_width(stroke_width);
+      cc.set_line_width(stroke_width)
       cc.stroke
       cc.rounded_rectangle(x, y, width, height, x_radius, y_radius)
       cc.set_source_color(fill_color)
       cc.fill
     end
 
+    # :nodoc:
+    # @api private 
+    def circle(x, y, radius, fill_color, stroke_color, stroke_width)
+      cc = cairo_context
+      cc.circle(x, y, radius)
+      cc.set_source_color(stroke_color)
+      cc.set_line_width(stroke_width)
+      cc.stroke
+      cc.circle(x, y, radius)
+      cc.set_source_color(fill_color)
+      cc.fill
+    end
+      
   end
 end