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