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"
19 #include "support/FileName.h"
20 #include "support/filetools.h"
25 using namespace lyx::support;
31 /** The cache contains one item per file, so use a map to find the
32 * cache item quickly by filename.
34 typedef map<FileName, Cache::ItemPtr> CacheType;
45 // Now return the cache
46 static Cache singleton;
62 vector<string> Cache::loadableFormats() const
64 return Image::loadableFormats();
68 void Cache::add(FileName const & file) const
70 // Is the file in the cache already?
72 LYXERR(Debug::GRAPHICS, "Cache::add(" << file << "):\n"
73 << "The file is already in the cache.");
77 pimpl_->cache[file] = ItemPtr(new CacheItem(file));
81 void Cache::remove(FileName const & file) const
83 CacheType::iterator it = pimpl_->cache.find(file);
84 if (it == pimpl_->cache.end())
87 ItemPtr & item = it->second;
89 if (item.use_count() == 1) {
90 // The graphics file is in the cache, but nothing else
92 pimpl_->cache.erase(it);
97 bool Cache::inCache(FileName const & file) const
99 return pimpl_->cache.find(file) != pimpl_->cache.end();
103 Cache::ItemPtr const Cache::item(FileName const & file) const
105 CacheType::const_iterator it = pimpl_->cache.find(file);
106 if (it == pimpl_->cache.end())
112 } // namespace graphics