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/*
* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef MODULES_DESKTOP_CAPTURE_X11_X_ATOM_CACHE_H_
#define MODULES_DESKTOP_CAPTURE_X11_X_ATOM_CACHE_H_
#include <X11/Xatom.h>
#include <X11/Xlib.h>
namespace webrtc {
// A cache of Atom. Each Atom object is created on demand.
class XAtomCache final {
public:
explicit XAtomCache(::Display* display);
~XAtomCache();
::Display* display() const;
Atom WmState();
Atom WindowType();
Atom WindowTypeNormal();
private:
// If |*atom| is None, this function uses XInternAtom() to retrieve an Atom.
Atom CreateIfNotExist(Atom* atom, const char* name);
::Display* const display_;
Atom wm_state_ = None;
Atom window_type_ = None;
Atom window_type_normal_ = None;
};
} // namespace webrtc
#endif // MODULES_DESKTOP_CAPTURE_X11_X_ATOM_CACHE_H_