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IOManager.hh
1 /*===========================================================================*\
2 * *
3 * OpenMesh *
4 * Copyright (C) 2001-2014 by Computer Graphics Group, RWTH Aachen *
5 * www.openmesh.org *
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33 \*===========================================================================*/
34
35 /*===========================================================================*\
36 * *
37 * $Revision: 990 $ *
38 * $Date: 2014-02-05 10:01:07 +0100 (Mi, 05. Feb 2014) $ *
39 * *
40 \*===========================================================================*/
41
42 //=============================================================================
43 //
44 // Implements the OpenMesh IOManager singleton
45 //
46 //=============================================================================
47
48 #ifndef __IOMANAGER_HH__
49 #define __IOMANAGER_HH__
50
51
52 //=== INCLUDES ================================================================
53
54
55 // STL
56 #include <iostream>
57 #include <sstream>
58 #include <string>
59 #include <set>
60
61 // OpenMesh
62 #include <OpenMesh/Core/System/config.h>
63 #include <OpenMesh/Core/IO/Options.hh>
64 #include <OpenMesh/Core/IO/reader/BaseReader.hh>
65 #include <OpenMesh/Core/IO/writer/BaseWriter.hh>
66 #include <OpenMesh/Core/IO/importer/BaseImporter.hh>
67 #include <OpenMesh/Core/IO/exporter/BaseExporter.hh>
68 #include <OpenMesh/Core/Utils/SingletonT.hh>
69
70
71 //== NAMESPACES ===============================================================
72
73
74 namespace OpenMesh {
75 namespace IO {
76
77
78 //=== IMPLEMENTATION ==========================================================
79
80
100 class OPENMESHDLLEXPORT _IOManager_
101 {
102 private:
103
105 _IOManager_() {}
106
108 ~_IOManager_() {};
109
113 friend OPENMESHDLLEXPORT _IOManager_& IOManager();
114
115 public:
116
123 bool read(const std::string& _filename,
124 BaseImporter& _bi,
125 Options& _opt);
126
133 bool read(std::istream& _filename,
134 const std::string& _ext,
135 BaseImporter& _bi,
136 Options& _opt);
137
138
145 bool write(const std::string& _filename,
146 BaseExporter& _be,
147 Options _opt=Options::Default,
148 std::streamsize _precision = 6);
149
156 bool write(std::ostream& _filename,
157 const std::string& _ext,
158 BaseExporter& _be,
159 Options _opt=Options::Default,
160 std::streamsize _precision = 6);
161
162
164 bool can_read( const std::string& _format ) const;
165
167 bool can_write( const std::string& _format ) const;
168
169
170 size_t binary_size(const std::string& _format,
171 BaseExporter& _be,
172 Options _opt = Options::Default)
173 {
174 const BaseWriter *bw = find_writer(_format);
175 return bw ? bw->binary_size(_be,_opt) : 0;
176 }
177
178
179
180 public: //-- QT convenience function ------------------------------------------
181
182
187 const std::string& qt_read_filters() const { return read_filters_; }
188
189
194 const std::string& qt_write_filters() const { return write_filters_; }
195
196
197
198 private:
199
200 // collect all readable file extensions
201 void update_read_filters();
202
203
204 // collect all writeable file extensions
205 void update_write_filters();
206
207
208
209 public: //-- SYSTEM PART------------------------------------------------------
210
211
215 bool register_module(BaseReader* _bl)
216 {
217 reader_modules_.insert(_bl);
218 update_read_filters();
219 return true;
220 }
221
222
223
227 bool register_module(BaseWriter* _bw)
228 {
229 writer_modules_.insert(_bw);
230 update_write_filters();
231 return true;
232 }
233
234
235 private:
236
237 const BaseWriter *find_writer(const std::string& _format);
238
239 // stores registered reader modules
240 std::set<BaseReader*> reader_modules_;
241
242 // stores registered writer modules
243 std::set<BaseWriter*> writer_modules_;
244
245 // input filters (e.g. for Qt file dialog)
246 std::string read_filters_;
247
248 // output filters (e.g. for Qt file dialog)
249 std::string write_filters_;
250 };
251
252
253 //=============================================================================
254
255
256 //_IOManager_* __IOManager_instance; Causes memory leak, as destructor is never called
257
258 OPENMESHDLLEXPORT _IOManager_& IOManager();
259
260 //=============================================================================
261 } // namespace IO
262 } // namespace OpenMesh
263 //=============================================================================
264 #endif
265 //=============================================================================
OpenMesh::IO::BaseWriter
Base class for all writer modules.
Definition: BaseWriter.hh:81
OpenMesh::IO::Options
Set options for reader/writer modules.
Definition: Options.hh:88
OpenMesh::IO::_IOManager_::qt_read_filters
const std::string & qt_read_filters() const
Returns all readable file extension + descriptions in one string.
Definition: IOManager.hh:187
OpenMesh::IO::_IOManager_::qt_write_filters
const std::string & qt_write_filters() const
Returns all writeable file extension + descriptions in one string.
Definition: IOManager.hh:194
OpenMesh::IO::BaseImporter
Base class for importer modules.
Definition: BaseImporter.hh:81
OpenMesh::IO::BaseWriter::binary_size
virtual size_t binary_size(BaseExporter &, Options) const
Returns expected size of file if binary format is supported else 0.
Definition: BaseWriter.hh:122
OpenMesh::IO::_IOManager_::register_module
bool register_module(BaseReader *_bl)
Registers a new reader module.
Definition: IOManager.hh:215
OpenMesh::IO::binary_size
size_t binary_size(const Mesh &_mesh, const std::string &_ext, Options _opt=Options::Default)
Get binary size of data.
Definition: MeshIO.hh:253
OpenMesh::IO::_IOManager_
This is the real IOManager class that is later encapsulated by SingletonT to enforce its uniqueness...
Definition: IOManager.hh:100
OpenMesh::IO::BaseReader
Base class for reader modules.
Definition: BaseReader.hh:86
OpenMesh::IO::_IOManager_::register_module
bool register_module(BaseWriter *_bw)
Registers a new writer module.
Definition: IOManager.hh:227
OpenMesh::IO::Options::Default
No options.
Definition: Options.hh:97
OpenMesh::IO::BaseExporter
Base class for exporter modules.
Definition: BaseExporter.hh:82