first init of 0.9

source/gui/effects.cpp

@@ -0,0 +1,78 @@
+#include <nana/gui/effects.hpp>
+#include <nana/gui/programming_interface.hpp>
+
+namespace nana
+{
+	namespace effects
+	{
+		bground_interface::~bground_interface()
+		{}
+
+		bground_factory_interface::~bground_factory_interface()
+		{}
+
+		//Here defines some effect implementations.
+		namespace impl
+		{
+			class transparent
+				: public bground_interface
+			{
+			public:
+				transparent(std::size_t percent)
+					: fade_rate_( percent <= 100 ? double(percent) / 100.0 : 0)
+				{}
+
+				void take_effect(window wd, graph_reference graph) const
+				{
+					if(fade_rate_ < 0.001)
+						return;
+
+					nana::color_t color = API::background(wd);
+					graph.blend(graph.size(), color, fade_rate_);
+				}
+			private:
+				const double fade_rate_;
+			};
+
+			class blur
+				: public bground_interface
+			{
+			public:
+				blur(std::size_t radius)
+					:radius_(radius)
+				{}
+
+				void take_effect(window, graph_reference graph) const
+				{
+					graph.blur(graph.size(), radius_);
+				}
+			private:
+				const std::size_t radius_;
+			};
+		}//end namespace impl
+		
+
+
+		//class bground_transparent
+			bground_transparent::bground_transparent(std::size_t percent)
+				: percent_(percent)
+			{}
+
+			bground_interface* bground_transparent::create() const
+			{
+				return new impl::transparent(percent_);
+			}
+		//end class bgroun_transparent
+
+		//class bground_blur
+			bground_blur::bground_blur(std::size_t radius)
+				: radius_(radius)
+			{}
+
+			bground_interface * bground_blur::create() const
+			{
+				return new impl::blur(radius_);
+			}
+		//end class bground_blur
+	}
+}//end namespace nana