add some missing files, refactor group

source/paint/detail/image_ico.hpp

@@ -0,0 +1,43 @@
+#ifndef NANA_PAINT_DETAIL_IMAGE_ICO_HPP
+#define NANA_PAINT_DETAIL_IMAGE_ICO_HPP
+
+#include <nana/paint/detail/image_impl_interface.hpp>
+
+namespace nana{	namespace paint
+{
+	namespace detail
+	{
+		class image_ico
+			:public image::image_impl_interface
+		{
+#if defined(NANA_WINDOWS)
+			struct handle_deleter
+			{
+				void operator()(HICON* handle) const;
+			};//end struct handle_deleter
+			typedef std::shared_ptr<HICON> ptr_t;
+#else
+			typedef std::shared_ptr<int*> ptr_t;
+#endif
+		public:
+			image_ico(bool is_ico);
+
+			bool open(const nana::char_t* filename) override;
+			bool alpha_channel() const override;
+			bool empty() const override;
+			void close() override;
+			nana::size size() const override;
+			virtual void paste(const nana::rectangle& src_r, graph_reference graph, const point& p_dst) const override;
+			virtual void stretch(const nana::rectangle&, graph_reference graph, const nana::rectangle& r) const override;
+
+			const ptr_t & ptr() const;
+		private:
+			const bool	is_ico_;
+			nana::size	size_;
+			ptr_t ptr_;
+		};//end class image_ico
+	}
+}//end namespace paint
+}//end namespace nana
+
+#endif