Added Progress bar, refactored Elements to be under CyberarmEngine::Element namespace.

lib/cyberarm_engine/ui/elements/progress.rb

@@ -0,0 +1,50 @@
+module CyberarmEngine
+  class Element
+    class Progress < Element
+      def initialize(options = {}, block = nil)
+        super(options, block)
+
+        @fraction_background = Background.new(background: @style.fraction_background)
+        self.value = options[:fraction] ? options[:fraction] : 0.0
+      end
+
+      def render
+        @fraction_background.draw
+      end
+
+      def recalculate
+        _width = dimensional_size(@style.width, :width)
+        _height= dimensional_size(@style.height,:height)
+        @width = _width
+        @height= _height
+
+        update_background
+      end
+
+      def update_background
+        super
+
+        @fraction_background.x = @style.border_thickness_left + @style.padding_left + @x
+        @fraction_background.y = @style.border_thickness_top + @style.padding_top + @y
+        @fraction_background.z = @z
+        @fraction_background.width = @width * @fraction
+        @fraction_background.height = @height
+
+        @fraction_background.background = @style.fraction_background
+      end
+
+      def value
+        @fraction
+      end
+
+      def value=(decimal)
+        raise "value must be number" unless decimal.is_a?(Numeric)
+
+        @fraction = decimal.clamp(0.0, 1.0)
+        update_background
+
+        return @fraction
+      end
+    end
+  end
+end