x11_event_source_libevent.cc revision 0529e5d033099cbfc42635f6f6183833b09dff6e 
1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "ui/events/platform/x11/x11_event_source.h"
6
7#include <X11/Xlib.h>
8
9#include "base/message_loop/message_loop.h"
10#include "base/message_loop/message_pump_libevent.h"
11
12namespace ui {
13
14namespace {
15
16class X11EventSourceLibevent : public X11EventSource,
17                               public base::MessagePumpLibevent::Watcher {
18 public:
19  explicit X11EventSourceLibevent(XDisplay* display)
20      : X11EventSource(display) {
21    int fd = ConnectionNumber(display);
22    base::MessageLoopForUI::current()->WatchFileDescriptor(fd, true,
23        base::MessagePumpLibevent::WATCH_READ, &watcher_controller_, this);
24  }
25
26  virtual ~X11EventSourceLibevent() {
27  }
28
29 private:
30  // base::MessagePumpLibevent::Watcher:
31  virtual void OnFileCanReadWithoutBlocking(int fd) OVERRIDE {
32    DispatchXEvents();
33  }
34
35  virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE {
36    NOTREACHED();
37  }
38
39  base::MessagePumpLibevent::FileDescriptorWatcher watcher_controller_;
40
41  DISALLOW_COPY_AND_ASSIGN(X11EventSourceLibevent);
42};
43
44}  // namespace
45
46scoped_ptr<PlatformEventSource> PlatformEventSource::CreateDefault() {
47  return scoped_ptr<PlatformEventSource>(
48      new X11EventSourceLibevent(gfx::GetXDisplay()));
49}
50
51}  // namespace ui
52