2 * \file GraphicsCache.C
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"
20 #include "support/filetools.h"
24 namespace support = lyx::support;
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<string, Cache::ItemPtr> CacheType;
46 // Now return the cache
47 static Cache singleton;
61 std::vector<string> Cache::loadableFormats() const
63 return Image::loadableFormats();
67 void Cache::add(string const & file) const
69 if (!support::absolutePath(file)) {
70 lyxerr << "Cache::add(" << file << "):\n"
71 << "The file must be have an absolute path."
76 // Is the file in the cache already?
78 lyxerr[Debug::GRAPHICS] << "Cache::add(" << file << "):\n"
79 << "The file is already in the cache."
84 pimpl_->cache[file] = ItemPtr(new CacheItem(file));
88 void Cache::remove(string const & file) const
90 CacheType::iterator it = pimpl_->cache.find(file);
91 if (it == pimpl_->cache.end())
94 ItemPtr & item = it->second;
96 if (item.use_count() == 1) {
97 // The graphics file is in the cache, but nothing else
99 pimpl_->cache.erase(it);
104 bool Cache::inCache(string const & file) const
106 return pimpl_->cache.find(file) != pimpl_->cache.end();
110 Cache::ItemPtr const Cache::item(string const & file) const
112 CacheType::const_iterator it = pimpl_->cache.find(file);
113 if (it == pimpl_->cache.end())
119 } // namespace graphics