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"
23 namespace support = lyx::support;
29 bool Previews::activated()
35 Previews & Previews::get()
37 static Previews singleton;
42 struct Previews::Impl {
44 typedef boost::shared_ptr<PreviewLoader> PreviewLoaderPtr;
46 typedef std::map<Buffer const *, PreviewLoaderPtr> CacheType;
61 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
77 Impl::CacheType::iterator it = pimpl_->cache.find(&buffer);
79 if (it != pimpl_->cache.end())
80 pimpl_->cache.erase(it);
84 void Previews::generateBufferPreviews(Buffer const & buffer) const
86 PreviewLoader & ploader = loader(buffer);
88 Buffer::inset_iterator it = buffer.inset_const_iterator_begin();
89 Buffer::inset_iterator end = buffer.inset_const_iterator_end();
91 for (; it != end; ++it)
92 it->addPreview(ploader);
94 ploader.startLoading();
97 } // namespace graphics