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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 WEBRTC_MODULES_DESKTOP_CAPTURE_X11_SHARED_X_DISPLAY_H_
#define WEBRTC_MODULES_DESKTOP_CAPTURE_X11_SHARED_X_DISPLAY_H_
#include <map>
#include <vector>
#include <assert.h>
#include <X11/Xlib.h>
#include <string>
#include "webrtc/base/scoped_ref_ptr.h"
#include "webrtc/system_wrappers/interface/atomic32.h"
namespace webrtc {
// A ref-counted object to store XDisplay connection.
class SharedXDisplay {
public:
class XEventHandler {
public:
virtual ~XEventHandler() {}
// Processes XEvent. Returns true if the event has been handled.
virtual bool HandleXEvent(const XEvent& event) = 0;
};
// Takes ownership of |display|.
explicit SharedXDisplay(Display* display);
// 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 rtc::scoped_refptr<SharedXDisplay> Create(
const std::string& display_name);
// Creates X11 Display connection for the default display (e.g. specified in
// DISPLAY). NULL is returned if X11 connection failed.
static rtc::scoped_refptr<SharedXDisplay> CreateDefault();
void AddRef() { ++ref_count_; }
void Release() {
if (--ref_count_ == 0)
delete this;
}
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();
private:
typedef std::map<int, std::vector<XEventHandler*> > EventHandlersMap;
~SharedXDisplay();
Atomic32 ref_count_;
Display* display_;
EventHandlersMap event_handlers_;
RTC_DISALLOW_COPY_AND_ASSIGN(SharedXDisplay);
};
} // namespace webrtc
#endif // WEBRTC_MODULES_DESKTOP_CAPTURE_X11_SHARED_X_DISPLAY_H_
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