File: message_pump_qt.h

package info (click to toggle)
icedove 1:52.3.0-4~deb8u2
  • links: PTS, VCS
  • area: main
  • in suites: jessie
  • size: 1,705,608 kB
  • sloc: cpp: 5,079,451; ansic: 2,051,639; python: 458,782; java: 241,615; xml: 192,378; asm: 178,649; sh: 81,867; makefile: 24,692; perl: 16,874; objc: 4,389; yacc: 1,816; ada: 1,697; lex: 1,257; pascal: 1,251; cs: 879; exp: 499; php: 436; lisp: 258; awk: 152; sed: 51; ruby: 47; csh: 27
file content (85 lines) | stat: -rw-r--r-- 2,228 bytes parent folder | download | duplicates (6)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef BASE_MESSAGE_PUMP_QT_H_
#define BASE_MESSAGE_PUMP_QT_H_

#include <qobject.h>

#include "base/message_pump.h"
#include "base/time.h"

class QTimer;

namespace base {

class MessagePumpForUI;

class MessagePumpQt : public QObject {
  Q_OBJECT

 public:
  MessagePumpQt(MessagePumpForUI &pump);
  ~MessagePumpQt();

  virtual bool event (QEvent *e);
  void scheduleDelayedIfNeeded(const TimeTicks& delayed_work_time);

 public Q_SLOTS:
  void dispatchDelayed();

 private:
  base::MessagePumpForUI &pump;
  QTimer* mTimer;
};

// This class implements a MessagePump needed for TYPE_UI MessageLoops on
// OS_LINUX platforms using QApplication event loop
class MessagePumpForUI : public MessagePump {

 public:
  MessagePumpForUI();
  ~MessagePumpForUI();

  virtual void Run(Delegate* delegate);
  virtual void Quit();
  virtual void ScheduleWork();
  virtual void ScheduleDelayedWork(const TimeTicks& delayed_work_time);

  // Internal methods used for processing the pump callbacks.  They are
  // public for simplicity but should not be used directly.
  // HandleDispatch is called after the poll has completed.
  void HandleDispatch();

 private:
  // We may make recursive calls to Run, so we save state that needs to be
  // separate between them in this structure type.
  struct RunState {
    Delegate* delegate;

    // Used to flag that the current Run() invocation should return ASAP.
    bool should_quit;

    // Used to count how many Run() invocations are on the stack.
    int run_depth;
  };

  RunState* state_;

  // This is the time when we need to do delayed work.
  TimeTicks delayed_work_time_;

  // MessagePump implementation for Qt based on the GLib implement.
  // On Qt we use a QObject base class and the
  // default qApp in order to process events through QEventLoop.
  MessagePumpQt qt_pump;

  DISALLOW_COPY_AND_ASSIGN(MessagePumpForUI);
};

}  // namespace base

#endif  // BASE_MESSAGE_PUMP_QT_H_