X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fgraphics%2Fimageloader.h;h=031ecb411667da36a505da084fad0ff2d66ba341;hb=917222bae696465f99024e0e15f73ba1058add44;hp=06532753b3e535d152c84c6ad75abae80230167b;hpb=cfd3548464e6424fc9decf0539d6cd04b031ba10;p=libs%2Fgui.git

diff --git a/source/graphics/imageloader.h b/source/graphics/imageloader.h
index 0653275..031ecb4 100644
--- a/source/graphics/imageloader.h
+++ b/source/graphics/imageloader.h
@@ -23,20 +23,61 @@ public:
 
 class ImageLoader
 {
+protected:
+	class RegisterBase
+	{
+	protected:
+		RegisterBase();
+	public:
+		virtual ~RegisterBase() { }
+
+		virtual unsigned get_signature_size() const = 0;
+		virtual bool detect(const std::string &) const = 0;
+		virtual ImageLoader *create(IO::Seekable &) const = 0;
+	};
+
 private:
 	IO::Base *source;
-protected:
 
+	static std::list<RegisterBase *> &get_registered_loaders();
+	static bool registered_loaders_changed;
+	static bool signature_size_compare(RegisterBase *, RegisterBase *);
+
+protected:
 	ImageLoader();
 public:
 	virtual ~ImageLoader();
 
 	static ImageLoader *open_file(const std::string &);
-	static ImageLoader *open_io(IO::Base &);
+	static ImageLoader *open_io(IO::Seekable &);
 
 	virtual void load(Image::Data &) = 0;
 };
 
+
+template<typename T>
+class RegisteredImageLoader: public ImageLoader
+{
+	friend class ImageLoader;
+
+private:
+	class Register: public RegisterBase
+	{
+	public:
+		virtual unsigned get_signature_size() const { return T::get_signature_size(); }
+		virtual bool detect(const std::string &s) const { return T::detect(s); }
+		virtual ImageLoader *create(IO::Seekable &io) const { return new T(io); }
+	};
+
+	static Register reg;
+
+protected:
+	RegisteredImageLoader() { (void)reg; }
+};
+
+template<typename T>
+typename RegisteredImageLoader<T>::Register RegisteredImageLoader<T>::reg;
+
 } // namespace Graphics
 } // namespace Msp