Added a font_size override for font description

lib/squib/api/text.rb

@@ -36,10 +36,10 @@ module Squib
     # @return [nil] Returns nothing
     # @api public
     def text(opts = {})
-      opts = needs(opts, [:range, :str, :font, :x, :y, :width, :height, :color, :wrap,
+      opts = needs(opts, [:range, :str, :font, :font_size, :x, :y, :width, :height, :color, :wrap,
                           :align, :justify, :spacing, :valign, :markup, :ellipsize, :hint, :layout])
       opts[:range].each do |i|
-        @cards[i].text(opts[:str][i], opts[:font][i], opts[:color][i],
+        @cards[i].text(opts[:str][i], opts[:font][i], opts[:font_size][i], opts[:color][i],
                        opts[:x][i], opts[:y][i], opts[:width][i], opts[:height][i],
                        opts[:markup][i], opts[:justify][i], opts[:wrap][i], 
                        opts[:ellipsize][i], opts[:spacing][i], opts[:align][i], 

lib/squib/constants.rb

@@ -13,6 +13,7 @@ module Squib
       :fill_color => '#0000',
       :force_id => false,
       :font => :use_set,
+      :font_size => nil,
       :format => :png,
       :gap => 0,
       :height => :native,
@@ -77,6 +78,7 @@ module Squib
           :fill_color => :fill_color,
           :force_svgid => :force_id,
           :font => :font,
+          :font_size => :font_size,
           :height => :height,
           :hint => :hint,
           :justify => :justify,

lib/squib/graphics/text.rb

@@ -85,7 +85,7 @@ module Squib
 
     # :nodoc:
     # @api private 
-    def text(str, font, color, 
+    def text(str, font, font_size, color, 
              x, y, width, height,
              markup, justify, wrap, ellipsize, 
              spacing, align, valign, hint)
@@ -94,7 +94,9 @@ module Squib
         cc.set_source_color(color)
         cc.move_to(x,y)
         layout = cc.create_pango_layout
-        layout.font_description = Pango::FontDescription.new(font)
+        font_desc = Pango::FontDescription.new(font)
+        font_desc.size = font_size * Pango::SCALE unless font_size.nil?
+        layout.font_description = font_desc
         layout.text = str.to_s
         layout.markup = str.to_s if markup
         layout = setwh(layout, width, height)