3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Angus Leeming
8 * Full author contact details are available in file CREDITS
14 #include "PreviewLoader.h"
19 #include "insets/inset.h"
21 #include "support/LAssert.h"
27 bool Previews::activated()
33 Previews & Previews::get()
35 static Previews singleton;
40 struct Previews::Impl {
42 typedef boost::shared_ptr<PreviewLoader> PreviewLoaderPtr;
44 typedef std::map<Buffer const *, PreviewLoaderPtr> CacheType;
59 PreviewLoader & Previews::loader(Buffer const * buffer) const
63 Impl::CacheType::iterator it = pimpl_->cache.find(buffer);
65 if (it == pimpl_->cache.end()) {
66 Impl::PreviewLoaderPtr ptr(new PreviewLoader(*buffer));
67 pimpl_->cache[buffer] = ptr;
71 return *it->second.get();
75 void Previews::removeLoader(Buffer const * buffer) const
80 Impl::CacheType::iterator it = pimpl_->cache.find(buffer);
82 if (it != pimpl_->cache.end())
83 pimpl_->cache.erase(it);
87 void Previews::generateBufferPreviews(Buffer const & buffer) const
89 PreviewLoader & ploader = loader(&buffer);
91 Buffer::inset_iterator it = buffer.inset_const_iterator_begin();
92 Buffer::inset_iterator end = buffer.inset_const_iterator_end();
94 for (; it != end; ++it)
95 it->addPreview(ploader);
97 ploader.startLoading();