30792987b8
TBR=wez@chromium.org Review URL: https://webrtc-codereview.appspot.com/2397004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@4958 4adac7df-926f-26a2-2b94-8c16560cd09d
88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
/*
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* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/modules/desktop_capture/x11/shared_x_display.h"
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#include <algorithm>
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#include "webrtc/system_wrappers/interface/logging.h"
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namespace webrtc {
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SharedXDisplay::SharedXDisplay(Display* display)
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: display_(display) {
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assert(display_);
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}
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SharedXDisplay::~SharedXDisplay() {
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assert(event_handlers_.empty());
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XCloseDisplay(display_);
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}
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// static
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scoped_refptr<SharedXDisplay> SharedXDisplay::Create(
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const std::string& display_name) {
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Display* display =
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XOpenDisplay(display_name.empty() ? NULL : display_name.c_str());
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if (!display) {
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LOG(LS_ERROR) << "Unable to open display";
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return NULL;
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}
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return new SharedXDisplay(display);
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}
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// static
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scoped_refptr<SharedXDisplay> SharedXDisplay::CreateDefault() {
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return Create(std::string());
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}
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void SharedXDisplay::AddEventHandler(int type, XEventHandler* handler) {
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event_handlers_[type].push_back(handler);
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}
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void SharedXDisplay::RemoveEventHandler(int type, XEventHandler* handler) {
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EventHandlersMap::iterator handlers = event_handlers_.find(type);
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if (handlers == event_handlers_.end())
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return;
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std::vector<XEventHandler*>::iterator new_end =
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std::remove(handlers->second.begin(), handlers->second.end(), handler);
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handlers->second.erase(new_end, handlers->second.end());
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// Check if no handlers left for this event.
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if (handlers->second.empty())
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event_handlers_.erase(handlers);
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}
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void SharedXDisplay::ProcessPendingXEvents() {
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// Hold reference to |this| to prevent it from being destroyed while
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// processing events.
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scoped_refptr<SharedXDisplay> self(this);
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// Find the number of events that are outstanding "now." We don't just loop
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// on XPending because we want to guarantee this terminates.
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int events_to_process = XPending(display());
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XEvent e;
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for (int i = 0; i < events_to_process; i++) {
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XNextEvent(display(), &e);
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EventHandlersMap::iterator handlers = event_handlers_.find(e.type);
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if (handlers == event_handlers_.end())
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continue;
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for (std::vector<XEventHandler*>::iterator it = handlers->second.begin();
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it != handlers->second.end(); ++it) {
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if ((*it)->HandleXEvent(e))
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break;
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}
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}
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}
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} // namespace webrtc
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