blob: 853d50fb9a998ad29e243b09ccbba4914ab35d95 [file] [log] [blame]
* 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.
#include "webrtc/modules/desktop_capture/x11/shared_x_display.h"
#include <X11/Xlib.h>
#include <algorithm>
#include "webrtc/rtc_base/checks.h"
#include "webrtc/rtc_base/logging.h"
namespace webrtc {
SharedXDisplay::SharedXDisplay(Display* display)
: display_(display) {
SharedXDisplay::~SharedXDisplay() {
// static
rtc::scoped_refptr<SharedXDisplay> SharedXDisplay::Create(
const std::string& display_name) {
Display* display =
XOpenDisplay(display_name.empty() ? NULL : display_name.c_str());
if (!display) {
LOG(LS_ERROR) << "Unable to open display";
return NULL;
return new SharedXDisplay(display);
// static
rtc::scoped_refptr<SharedXDisplay> SharedXDisplay::CreateDefault() {
return Create(std::string());
void SharedXDisplay::AddEventHandler(int type, XEventHandler* handler) {
void SharedXDisplay::RemoveEventHandler(int type, XEventHandler* handler) {
EventHandlersMap::iterator handlers = event_handlers_.find(type);
if (handlers == event_handlers_.end())
std::vector<XEventHandler*>::iterator new_end =
std::remove(handlers->second.begin(), handlers->second.end(), handler);
handlers->second.erase(new_end, handlers->second.end());
// Check if no handlers left for this event.
if (handlers->second.empty())
void SharedXDisplay::ProcessPendingXEvents() {
// Hold reference to |this| to prevent it from being destroyed while
// processing events.
rtc::scoped_refptr<SharedXDisplay> self(this);
// Find the number of events that are outstanding "now." We don't just loop
// on XPending because we want to guarantee this terminates.
int events_to_process = XPending(display());
XEvent e;
for (int i = 0; i < events_to_process; i++) {
XNextEvent(display(), &e);
EventHandlersMap::iterator handlers = event_handlers_.find(e.type);
if (handlers == event_handlers_.end())
for (std::vector<XEventHandler*>::iterator it = handlers->second.begin();
it != handlers->second.end(); ++it) {
if ((*it)->HandleXEvent(e))
} // namespace webrtc