3 * \file GraphicsConverter.h
4 * This file is part of LyX, the document processor.
5 * Licence details can be found in the file COPYING.
7 * \author Angus Leeming
9 * Full author contact details are available in file CREDITS.
11 * The controller of a conversion process from file AA of format A to
12 * file BB of format B.
13 * Once finished, a signal is emitted to inform any listeners (connected
14 * through the connect() method).
17 #ifndef GRAPHICSCONVERTER_H
18 #define GRAPHICSCONVERTER_H
20 #include "support/signals.h"
26 namespace support { class FileName; }
32 /// Can the conversion be performed?
33 static bool isReachable(std::string const & from_format_name,
34 std::string const & to_format_name);
36 /** One Converter per conversion ensures that the (hidden) signal
37 * is always connected to the expected slot.
39 Converter(support::FileName const & doc_fname,
40 support::FileName const & from_file, std::string const & to_file_base,
41 std::string const & from_format, std::string const & to_format);
43 /// We are explicit about when we begin the conversion process.
44 void startConversion() const;
46 /** Connect and you'll be informed when the conversion process has
48 * If the conversion is successful, then the listener is passed \c true.
49 * The connection is closed when this is destroyed.
51 typedef signal<void(bool)> sig_type;
52 typedef sig_type::slot_type slot_type;
54 connection connect(slot_type const &) const;
56 /** If the conversion is successful, this returns the name of the
58 * If conversion fails or has not been completed, however, it
59 * returns an empty string.
61 support::FileName const & convertedFile() const;
65 Converter(Converter const &);
66 void operator=(Converter const &);
68 /// Use the Pimpl idiom to hide the internals.
70 /// The pointer never changes although *pimpl_'s contents may.
71 std::shared_ptr<Impl> const pimpl_;
74 } // namespace graphics
77 #endif // GRAPHICSCONVERTER_H