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"
25 bool Previews::activated()
31 Previews & Previews::get()
33 static Previews singleton;
38 struct Previews::Impl {
40 typedef boost::shared_ptr<PreviewLoader> PreviewLoaderPtr;
42 typedef std::map<Buffer const *, PreviewLoaderPtr> CacheType;
57 PreviewLoader & Previews::loader(Buffer const & buffer) const
59 Impl::CacheType::iterator it = pimpl_->cache.find(&buffer);
61 if (it == pimpl_->cache.end()) {
62 Impl::PreviewLoaderPtr ptr(new PreviewLoader(buffer));
63 pimpl_->cache[&buffer] = ptr;
67 return *it->second.get();
71 void Previews::removeLoader(Buffer const & buffer) const
73 Impl::CacheType::iterator it = pimpl_->cache.find(&buffer);
75 if (it != pimpl_->cache.end())
76 pimpl_->cache.erase(it);
80 void Previews::generateBufferPreviews(Buffer const & buffer) const
82 PreviewLoader & ploader = loader(buffer);
84 Buffer::inset_iterator it = buffer.inset_const_iterator_begin();
85 Buffer::inset_iterator end = buffer.inset_const_iterator_end();
87 for (; it != end; ++it)
88 it->addPreview(ploader);
90 ploader.startLoading();
93 } // namespace graphics