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Diffstat (limited to 'ipc/chromium/src/base/message_pump_qt.h')
-rw-r--r-- | ipc/chromium/src/base/message_pump_qt.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/ipc/chromium/src/base/message_pump_qt.h b/ipc/chromium/src/base/message_pump_qt.h new file mode 100644 index 0000000000..476c9757ac --- /dev/null +++ b/ipc/chromium/src/base/message_pump_qt.h @@ -0,0 +1,84 @@ +/* -*- 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 +// XP_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_ |