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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@9010 a592a061-630c-0410-9148-cb99ea01b6c8
73 lines
2.0 KiB
C++
73 lines
2.0 KiB
C++
// -*- C++ -*-
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/**
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* \file GraphicsConverter.h
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Angus Leeming
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*
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* Full author contact details are available in file CREDITS.
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*
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* The controller of a conversion process from file AA of format A to
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* file BB of format B.
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* Once finished, a signal is emitted to inform any listeners (connected
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* through the connect() method).
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*/
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#ifndef GRAPHICSCONVERTER_H
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#define GRAPHICSCONVERTER_H
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#include <boost/scoped_ptr.hpp>
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#include <boost/signal.hpp>
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#include <boost/utility.hpp>
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namespace lyx {
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namespace graphics {
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class Converter : boost::noncopyable {
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public:
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/// Can the conversion be performed?
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static bool isReachable(std::string const & from_format_name,
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std::string const & to_format_name);
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/** One Converter per conversion ensures that the (hidden) signal
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* is always connected to the expected slot.
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*/
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Converter(std::string const & from_file, std::string const & to_file_base,
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std::string const & from_format, std::string const & to_format);
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/// Define an empty d-tor out-of-line to keep boost::scoped_ptr happy.
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~Converter();
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/// We are explicit about when we begin the conversion process.
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void startConversion() const;
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/** Connect and you'll be informed when the conversion process has
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* finished.
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* If the conversion is succesful, then the listener is passed \c true.
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*/
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typedef boost::signal<void(bool)> sig_type;
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typedef sig_type::slot_type slot_type;
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///
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boost::signals::connection connect(slot_type const &) const;
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/** If the conversion is succesful, this returns the name of the
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* resulting file.
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* If conversion fails or has not been completed, however, it
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* returns an empty string.
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*/
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std::string const & convertedFile() const;
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private:
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/// Use the Pimpl idiom to hide the internals.
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class Impl;
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/// The pointer never changes although *pimpl_'s contents may.
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boost::scoped_ptr<Impl> const pimpl_;
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};
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} // namespace graphics
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} // namespace lyx
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#endif // GRAPHICSCONVERTER_H
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