X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fgraphics%2Fimageloader.h;h=fbfd4d66e0c3c647c5c2171d03da04d4ccc1848d;hb=7302a061c57602203895b616bf54d96269c677c6;hp=f0b8d52c36412ec6cf3e9901d5b2a43c51aefdd6;hpb=d3bc6c9c2cfaaedaabfd4b5b7bf4e1da2de51331;p=libs%2Fgui.git

diff --git a/source/graphics/imageloader.h b/source/graphics/imageloader.h
index f0b8d52..fbfd4d6 100644
--- a/source/graphics/imageloader.h
+++ b/source/graphics/imageloader.h
@@ -23,6 +23,14 @@ public:
 
 class ImageLoader
 {
+public:
+	enum State
+	{
+		INITIAL,
+		HEADERS_LOADED,
+		FINISHED
+	};
+
 protected:
 	class RegisterBase
 	{
@@ -56,18 +64,25 @@ protected:
 
 private:
 	IO::Base *source;
+	State state;
 
 protected:
 	ImageLoader();
 public:
 	virtual ~ImageLoader();
 
+	static bool detect_signature(const std::string &);
 	static ImageLoader *open_file(const std::string &);
 	static ImageLoader *open_io(IO::Seekable &);
 
 	virtual void load(Image::Data &);
-	virtual void load_headers(Image::Data &) { }
-	virtual void load_data(Image::Data &) { }
+	virtual void load_headers(Image::Data &);
+protected:
+	virtual void load_headers_(Image::Data &) = 0;
+	virtual void load_pixels_(Image::Data &) = 0;
+
+public:
+	State get_state() const { return state; }
 
 	template<typename T>
 	static void register_loader();