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/*
* Copyright (c) 2013 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_LINUX_X11_SHARED_X_DISPLAY_H_
#define MODULES_DESKTOP_CAPTURE_LINUX_X11_SHARED_X_DISPLAY_H_
#include <map>
#include <vector>
#include "absl/strings/string_view.h"
#include "api/ref_counted_base.h"
#include "api/scoped_refptr.h"
#include "rtc_base/synchronization/mutex.h"
#include "rtc_base/system/rtc_export.h"
#include "rtc_base/thread_annotations.h"
// Including Xlib.h will involve evil defines (Bool, Status, True, False), which
// easily conflict with other headers.
typedef struct _XDisplay Display;
typedef union _XEvent XEvent;
namespace webrtc {
// A ref-counted object to store XDisplay connection.
class RTC_EXPORT SharedXDisplay : public RefCountedNonVirtual<SharedXDisplay> {
public:
class XEventHandler {
public:
virtual ~XEventHandler() {}
// Processes XEvent. Returns true if the event has been handled.
virtual bool HandleXEvent(const XEvent& event) = 0;
};
// Creates a new X11 Display for the `display_name`. NULL is returned if X11
// connection failed. Equivalent to CreateDefault() when `display_name` is
// empty.
static scoped_refptr<SharedXDisplay> Create(absl::string_view display_name);
// Creates X11 Display connection for the default display (e.g. specified in
// DISPLAY). NULL is returned if X11 connection failed.
static scoped_refptr<SharedXDisplay> CreateDefault();
Display* display() { return display_; }
// Adds a new event `handler` for XEvent's of `type`.
void AddEventHandler(int type, XEventHandler* handler);
// Removes event `handler` added using `AddEventHandler`. Doesn't do anything
// if `handler` is not registered.
void RemoveEventHandler(int type, XEventHandler* handler);
// Processes pending XEvents, calling corresponding event handlers.
void ProcessPendingXEvents();
void IgnoreXServerGrabs();
~SharedXDisplay();
SharedXDisplay(const SharedXDisplay&) = delete;
SharedXDisplay& operator=(const SharedXDisplay&) = delete;
protected:
// Takes ownership of `display`.
explicit SharedXDisplay(Display* display);
private:
typedef std::map<int, std::vector<XEventHandler*> > EventHandlersMap;
Display* display_;
Mutex mutex_;
EventHandlersMap event_handlers_ RTC_GUARDED_BY(mutex_);
};
} // namespace webrtc
#endif // MODULES_DESKTOP_CAPTURE_LINUX_X11_SHARED_X_DISPLAY_H_
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