2 * \file GraphicsCache.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
7 * \author Angus Leeming
9 * Full author contact details are available in file CREDITS.
14 #include "GraphicsCache.h"
15 #include "GraphicsCacheItem.h"
16 #include "GraphicsImage.h"
18 #include "support/debug.h"
20 #include "support/filetools.h"
28 using support::FileName;
32 /** The cache contains one item per file, so use a map to find the
33 * cache item quickly by filename.
35 typedef std::map<FileName, Cache::ItemPtr> CacheType;
46 // Now return the cache
47 static Cache singleton;
63 std::vector<string> Cache::loadableFormats() const
65 return Image::loadableFormats();
69 void Cache::add(FileName const & file) const
71 // Is the file in the cache already?
73 LYXERR(Debug::GRAPHICS, "Cache::add(" << file << "):\n"
74 << "The file is already in the cache.");
78 pimpl_->cache[file] = ItemPtr(new CacheItem(file));
82 void Cache::remove(FileName const & file) const
84 CacheType::iterator it = pimpl_->cache.find(file);
85 if (it == pimpl_->cache.end())
88 ItemPtr & item = it->second;
90 if (item.use_count() == 1) {
91 // The graphics file is in the cache, but nothing else
93 pimpl_->cache.erase(it);
98 bool Cache::inCache(FileName const & file) const
100 return pimpl_->cache.find(file) != pimpl_->cache.end();
104 Cache::ItemPtr const Cache::item(FileName const & file) const
106 CacheType::const_iterator it = pimpl_->cache.find(file);
107 if (it == pimpl_->cache.end())
113 } // namespace graphics