2 /* === S Y N F I G ========================================================= */
9 ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
11 ** This package is free software; you can redistribute it and/or
12 ** modify it under the terms of the GNU General Public License as
13 ** published by the Free Software Foundation; either version 2 of
14 ** the License, or (at your option) any later version.
16 ** This package is distributed in the hope that it will be useful,
17 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 ** General Public License for more details.
22 /* ========================================================================= */
24 /* === S T A R T =========================================================== */
26 #ifndef __SYNFIG_IMPORTER_H
27 #define __SYNFIG_IMPORTER_H
29 /* === H E A D E R S ======================================================= */
35 //#include "surface.h"
36 //#include "general.h"
41 /* === M A C R O S ========================================================= */
44 #define SYNFIG_IMPORTER_MODULE_EXT public: static const char name__[], version__[], ext__[],cvs_id__[]; static Importer *create(const char *filename);
46 //! Sets the name of the importer
47 #define SYNFIG_IMPORTER_SET_NAME(class,x) const char class::name__[]=x
50 #define SYNFIG_IMPORTER_SET_EXT(class,x) const char class::ext__[]=x
52 //! Sets the version of the importer
53 #define SYNFIG_IMPORTER_SET_VERSION(class,x) const char class::version__[]=x
55 //! Sets the CVS ID of the importer
56 #define SYNFIG_IMPORTER_SET_CVS_ID(class,x) const char class::cvs_id__[]=x
59 #define SYNFIG_IMPORTER_INIT(class) synfig::Importer* class::create(const char *filename) { return new class(filename); }
61 /* === T Y P E D E F S ===================================================== */
63 /* === C L A S S E S & S T R U C T S ======================================= */
68 class ProgressCallback;
71 ** \brief Used for importing bitmaps of various formats, including animations
72 ** \todo Write more detailed description
74 class Importer : public etl::shared_object
77 typedef Importer* (*Factory)(const char *filename);
78 typedef std::map<String,Factory> Book;
83 static bool subsys_init();
84 static bool subsys_stop();
86 typedef etl::handle<Importer> Handle;
87 typedef etl::loose_handle<Importer> LooseHandle;
88 typedef etl::handle<const Importer> ConstHandle;
98 Gamma& gamma() { return gamma_; }
99 const Gamma& gamma()const { return gamma_; }
103 //! Gets a frame and puts it into \a surface
104 /*! \param surface Reference to surface to put frame into
105 ** \param time For animated importers, determines which frame to get.
106 ** For static importers, this parameter is unused.
107 ** \param callback Pointer to callback class for progress, errors, etc.
108 ** \return \c true on success, \c false on error
109 ** \see ProgressCallback, Surface
111 virtual bool get_frame(Surface &surface,Time time, ProgressCallback *callback=NULL)=0;
112 virtual bool get_frame(Surface &surface,Time time,
113 bool &trimmed __attribute__ ((unused)),
114 unsigned int &width __attribute__ ((unused)), unsigned int &height __attribute__ ((unused)),
115 unsigned int &top __attribute__ ((unused)), unsigned int &left __attribute__ ((unused)),
116 ProgressCallback *callback=NULL) {
117 return get_frame(surface,time,callback);
120 //! Returns \c true if the importer pays attention to the \a time parameter of get_frame()
121 virtual bool is_animated() { return false; }
123 //! Attempts to open \a filename, and returns a handle to the associated Importer
124 static Handle open(const String &filename);
127 }; // END of namespace synfig
129 /* === E N D =============================================================== */