1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "ui/gfx/x/x11_atom_cache.h" 6 7 #include <X11/Xatom.h> 8 #include <X11/Xlib.h> 9 10 #include "base/logging.h" 11 #include "base/memory/scoped_ptr.h" 12 13 namespace ui { 14 15 X11AtomCache::X11AtomCache(XDisplay* xdisplay, const char** to_cache) 16 : xdisplay_(xdisplay), 17 uncached_atoms_allowed_(false) { 18 int cache_count = 0; 19 for (const char** i = to_cache; *i != NULL; i++) 20 cache_count++; 21 22 scoped_ptr<Atom[]> cached_atoms(new Atom[cache_count]); 23 24 // Grab all the atoms we need now to minimize roundtrips to the X11 server. 25 XInternAtoms(xdisplay_, 26 const_cast<char**>(to_cache), cache_count, False, 27 cached_atoms.get()); 28 29 for (int i = 0; i < cache_count; ++i) 30 cached_atoms_.insert(std::make_pair(to_cache[i], cached_atoms[i])); 31 } 32 33 X11AtomCache::~X11AtomCache() {} 34 35 Atom X11AtomCache::GetAtom(const char* name) const { 36 std::map<std::string, Atom>::const_iterator it = cached_atoms_.find(name); 37 38 if (uncached_atoms_allowed_ && it == cached_atoms_.end()) { 39 Atom atom = XInternAtom(xdisplay_, name, false); 40 cached_atoms_.insert(std::make_pair(name, atom)); 41 return atom; 42 } 43 44 CHECK(it != cached_atoms_.end()) << " Atom " << name << " not found"; 45 return it->second; 46 } 47 48 } // namespace ui 49
