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"
17 #include "insetiterator.h"
19 #include "paragraph.h"
21 #include "insets/inset.h"
27 LyXRC_PreviewStatus Previews::status()
33 Previews & Previews::get()
35 static Previews singleton;
40 class Previews::Impl {
43 typedef boost::shared_ptr<PreviewLoader> PreviewLoaderPtr;
45 typedef std::map<Buffer const *, PreviewLoaderPtr> CacheType;
60 PreviewLoader & Previews::loader(Buffer const & buffer) const
62 Impl::CacheType::iterator it = pimpl_->cache.find(&buffer);
64 if (it == pimpl_->cache.end()) {
65 Impl::PreviewLoaderPtr ptr(new PreviewLoader(buffer));
66 pimpl_->cache[&buffer] = ptr;
70 return *it->second.get();
74 void Previews::removeLoader(Buffer const & buffer) const
76 Impl::CacheType::iterator it = pimpl_->cache.find(&buffer);
78 if (it != pimpl_->cache.end())
79 pimpl_->cache.erase(it);
83 void Previews::generateBufferPreviews(Buffer const & buffer) const
85 PreviewLoader & ploader = loader(buffer);
87 InsetBase & inset = buffer.inset();
88 InsetIterator it = inset_iterator_begin(inset);
89 InsetIterator const end = inset_iterator_end(inset);
91 for (; it != end; ++it)
92 it->addPreview(ploader);
94 ploader.startLoading();
97 } // namespace graphics