1 /* === S Y N F I G ========================================================= */
8 ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
10 ** This package is free software; you can redistribute it and/or
11 ** modify it under the terms of the GNU General Public License as
12 ** published by the Free Software Foundation; either version 2 of
13 ** the License, or (at your option) any later version.
15 ** This package is distributed in the hope that it will be useful,
16 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 ** General Public License for more details.
21 /* ========================================================================= */
23 /* === S T A R T =========================================================== */
25 #ifndef __SYNFIG_IMPORTER_H
26 #define __SYNFIG_IMPORTER_H
28 /* === H E A D E R S ======================================================= */
34 //#include "surface.h"
35 //#include "general.h"
40 /* === M A C R O S ========================================================= */
43 #define SYNFIG_IMPORTER_MODULE_EXT public: static const char name__[], version__[], ext__[],cvs_id__[]; static Importer *create(const char *filename);
45 //! Sets the name of the importer
46 #define SYNFIG_IMPORTER_SET_NAME(class,x) const char class::name__[]=x
49 #define SYNFIG_IMPORTER_SET_EXT(class,x) const char class::ext__[]=x
51 //! Sets the version of the importer
52 #define SYNFIG_IMPORTER_SET_VERSION(class,x) const char class::version__[]=x
54 //! Sets the CVS ID of the importer
55 #define SYNFIG_IMPORTER_SET_CVS_ID(class,x) const char class::cvs_id__[]=x
58 #define SYNFIG_IMPORTER_INIT(class) synfig::Importer* class::create(const char *filename) { return new class(filename); }
60 /* === T Y P E D E F S ===================================================== */
62 /* === C L A S S E S & S T R U C T S ======================================= */
67 class ProgressCallback;
70 ** \brief Used for importing bitmaps of various formats, including animations
71 ** \todo Write more detailed description
73 class Importer : public etl::shared_object
76 typedef Importer* (*Factory)(const char *filename);
77 typedef std::map<String,Factory> Book;
82 static bool subsys_init();
83 static bool subsys_stop();
85 typedef etl::handle<Importer> Handle;
86 typedef etl::loose_handle<Importer> LooseHandle;
87 typedef etl::handle<const Importer> ConstHandle;
97 Gamma& gamma() { return gamma_; }
98 const Gamma& gamma()const { return gamma_; }
102 //! Gets a frame and puts it into \a surface
103 /*! \param surface Reference to surface to put frame into
104 ** \param time For animated importers, determines which frame to get.
105 ** For static importers, this parameter is unused.
106 ** \param callback Pointer to callback class for progress, errors, etc.
107 ** \return \c true on success, \c false on error
108 ** \see ProgressCallback, Surface
110 virtual bool get_frame(Surface &surface,Time time, ProgressCallback *callback=NULL)=0;
112 //! Returns \c true if the importer pays attention to the \a time parameter of get_frame()
113 virtual bool is_animated() { return false; }
115 //! Attempts to open \a filename, and returns a handle to the associated Importer
116 static Handle open(const String &filename);
119 }; // END of namespace synfig
121 /* === E N D =============================================================== */