1 #ifndef MSP_GRAPHICS_IMAGELOADER_H_
2 #define MSP_GRAPHICS_IMAGELOADER_H_
9 class unsupported_image_format: public std::runtime_error
12 unsupported_image_format(const std::string &w): std::runtime_error(w) { }
13 virtual ~unsupported_image_format() throw() { }
16 class bad_image_data: public std::runtime_error
19 bad_image_data(const std::string &w): std::runtime_error(w) { }
20 virtual ~bad_image_data() throw() { }
32 virtual ~RegisterBase() { }
34 virtual unsigned get_signature_size() const = 0;
35 virtual bool detect(const std::string &) const = 0;
36 virtual ImageLoader *create(IO::Seekable &) const = 0;
40 class RegisteredLoader: public RegisterBase
43 virtual unsigned get_signature_size() const { return T::get_signature_size(); }
44 virtual bool detect(const std::string &s) const { return T::detect(s); }
45 virtual ImageLoader *create(IO::Seekable &io) const { return new T(io); }
50 std::list<RegisterBase *> loaders;
63 virtual ~ImageLoader();
65 static ImageLoader *open_file(const std::string &);
66 static ImageLoader *open_io(IO::Seekable &);
68 virtual void load(Image::Data &) = 0;
71 static void register_loader();
73 static Registry &get_registry();
75 static bool signature_size_compare(RegisterBase *, RegisterBase *);
79 void ImageLoader::register_loader()
81 Registry ®istry = get_registry();
82 registry.loaders.push_back(new RegisteredLoader<T>);
83 registry.changed = true;
86 } // namespace Graphics