| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "ui/gfx/x/x11_atom_cache.h" |
| |
| #include <X11/Xatom.h> |
| #include <X11/Xlib.h> |
| |
| #include "base/logging.h" |
| #include "base/memory/scoped_ptr.h" |
| |
| namespace ui { |
| |
| X11AtomCache::X11AtomCache(XDisplay* xdisplay, const char** to_cache) |
| : xdisplay_(xdisplay), |
| uncached_atoms_allowed_(false) { |
| int cache_count = 0; |
| for (const char** i = to_cache; *i != NULL; i++) |
| cache_count++; |
| |
| scoped_ptr<XAtom[]> cached_atoms(new XAtom[cache_count]); |
| |
| // Grab all the atoms we need now to minimize roundtrips to the X11 server. |
| XInternAtoms(xdisplay_, |
| const_cast<char**>(to_cache), cache_count, False, |
| cached_atoms.get()); |
| |
| for (int i = 0; i < cache_count; ++i) |
| cached_atoms_.insert(std::make_pair(to_cache[i], cached_atoms[i])); |
| } |
| |
| X11AtomCache::~X11AtomCache() {} |
| |
| XAtom X11AtomCache::GetAtom(const char* name) const { |
| std::map<std::string, Atom>::const_iterator it = cached_atoms_.find(name); |
| |
| if (uncached_atoms_allowed_ && it == cached_atoms_.end()) { |
| XAtom atom = XInternAtom(xdisplay_, name, false); |
| cached_atoms_.insert(std::make_pair(name, atom)); |
| return atom; |
| } |
| |
| CHECK(it != cached_atoms_.end()) << " Atom " << name << " not found"; |
| return it->second; |
| } |
| |
| } // namespace ui |