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https://git.lyx.org/repos/lyx.git
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d91ffd8d78
Refactor code common to InsetInclude and InsetFormula into a new PreviewedInset class. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@4830 a592a061-630c-0410-9148-cb99ea01b6c8
104 lines
1.6 KiB
C
104 lines
1.6 KiB
C
/*
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* \file Previews.C
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* Copyright 2002 the LyX Team
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* Read the file COPYING
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*
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* \author Angus Leeming <leeming@lyx.org>
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*/
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#include <config.h>
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#ifdef __GNUG__
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#pragma implementation
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#endif
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#include "Previews.h"
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#include "PreviewLoader.h"
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#include "buffer.h"
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#include "lyxrc.h"
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#include "insets/inset.h"
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#include "support/LAssert.h"
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#include <map>
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namespace grfx {
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bool Previews::activated()
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{
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return lyxrc.preview;
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}
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Previews & Previews::get()
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{
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static Previews singleton;
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return singleton;
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}
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struct Previews::Impl {
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///
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typedef boost::shared_ptr<PreviewLoader> PreviewLoaderPtr;
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///
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typedef std::map<Buffer const *, PreviewLoaderPtr> CacheType;
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///
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CacheType cache;
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};
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Previews::Previews()
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: pimpl_(new Impl())
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{}
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Previews::~Previews()
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{}
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PreviewLoader & Previews::loader(Buffer const * buffer) const
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{
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lyx::Assert(buffer);
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Impl::CacheType::iterator it = pimpl_->cache.find(buffer);
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if (it == pimpl_->cache.end()) {
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Impl::PreviewLoaderPtr ptr(new PreviewLoader(*buffer));
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pimpl_->cache[buffer] = ptr;
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return *ptr.get();
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}
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return *it->second.get();
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}
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void Previews::removeLoader(Buffer const * buffer) const
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{
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if (!buffer)
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return;
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Impl::CacheType::iterator it = pimpl_->cache.find(buffer);
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if (it != pimpl_->cache.end())
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pimpl_->cache.erase(it);
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}
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void Previews::generateBufferPreviews(Buffer const & buffer) const
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{
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PreviewLoader & ploader = loader(&buffer);
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Buffer::inset_iterator it = buffer.inset_const_iterator_begin();
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Buffer::inset_iterator end = buffer.inset_const_iterator_end();
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for (; it != end; ++it) {
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(*it)->addPreview(ploader);
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}
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ploader.startLoading();
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}
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} // namespace grfx
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