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/***************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (directui@nokia.com)
**
** This file is part of libmeegotouch.
**
** If you have questions regarding the use of this file, please contact
** Nokia at directui@nokia.com.
**
** This library is free software; you can redistribute it and/or
** modify it under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation
** and appearing in the file LICENSE.LGPL included in the packaging
** of this file.
**
****************************************************************************/
#ifndef MEXTENSIONRUNNER_H_
#define MEXTENSIONRUNNER_H_
#include <QObject>
#include <QRectF>
#include <QPixmap>
#include <mnamespace.h>
#include <mexport.h>
class MWidget;
class MScene;
class MWindow;
class QGraphicsWidget;
class MAppletClient;
class MAppletMessage;
class MAppletMouseMessage;
class MAppletCancelMessage;
class MAppletMetaData;
class MAppletInterface;
class MAppletSharedMutex;
class QAction;
#ifdef QT_OPENGL_LIB
class QGLContext;
#endif
#ifdef HAVE_CONTEXTSUBSCRIBER
class ContextProperty;
#endif
//! \internal
/**
* MExtensionRunner is a class that is used to start and run oop (out of process)
* extension widgets.
*
* W A R N I N G
* -------------
* This file is not part of the libmeegotouch API. It should only be used by applet runner developers.
*/
class M_EXTENSIONS_EXPORT MExtensionRunner : public QObject
{
Q_OBJECT
public:
/*!
* MExtensionRunner constructor
*/
MExtensionRunner();
//! MExtensionRunner destructor
virtual ~MExtensionRunner();
/*!
* Initialize the extension and establish an IPC connection between the runner and
* the host application.
*
* \param serverName the name of the host process's server.
* \return \c true if the extension and IPC connection were initialized correctly,
* \c false if something went wrong.
*/
virtual bool init(const QString &serverName);
/*!
* Sends a message of type MAppletUpdateGeometryMessage to the host.
*/
virtual void sendUpdateGeometryMessage();
Q_SIGNALS:
/*!
* \brief A signal that is emitted when item is shown/hidden
* TODO: Remove this redundant signal during next API/ABI break
*/
void visibilityChanged(bool visibility);
/*!
* \brief A signal that is emitted when item is shown/hidden
*/
void visibilityChanged();
protected slots:
/*!
* \brief A slot for receiving messages from the host application
*/
virtual void messageReceived(const MAppletMessage &message);
/*!
* \brief A slot for notifying that the scene has changed and needs to be painted
*/
virtual void sceneChanged(const QList<QRectF> ®ion);
/*!
* \brief Slot to be called when the host process has not sent any messages in ALIVE_TIMER_TIMEOUT milliseconds
*/
virtual void hostProcessNotAlive();
/*!
* \brief Stops or starts the alive timer depending on the display blanking state
*/
void updateDisplayState();
protected:
//! AppletClient for communicating between the runner and the host processes.
MAppletClient *communicator;
//! A parent widget for the actual extension widget
QGraphicsWidget *parentWidget;
//! The extension widget instantiated from shared library
QGraphicsWidget *widget;
//! Scene where the widget is inserted.
MScene *scene;
//! View into the scene.
MWindow *view;
/*! Pixmap in which the extension is painted. The underlying X pixmap is
shared between the host and runner processes. */
QPixmap pixmap;
//! List to hold object menu actions received from widget.
QList<QAction *> widgetObjectMenuActions;
#ifdef HAVE_CONTEXTSUBSCRIBER
//! Context property for getting the screen blanking status
ContextProperty *screenBlankProperty;
#endif
//! True if the display is currently blanked
bool displayBlanked;
#ifdef QT_OPENGL_LIB
//! OpenGL context
QGLContext *context;
#endif
//! Timer for checking that the host process is alive
QTimer *aliveTimer;
//! Shared mutex for locking the pixmap
MAppletSharedMutex *pixmapMutex;
//! Combined changed rect for the scene
QRectF changedRect;
//! Visibility status of the extension
bool visible;
/*!
* Frees all resources that have been reserved by this object currently.
*/
virtual void teardown();
/*!
* Handles an AppletMouseMessage.
*
* \param message the AppletMouseMessage to handle
*/
virtual void handleMouseEvent(const MAppletMouseMessage *message);
/*!
* Handles an AppletCancelMessage.
*
* \param message to be handled
*/
virtual void handleCancelEvent(const MAppletCancelMessage *message);
/*!
* Sets pixmap to use the received X pixmap handle
*
* \param handle the X pixmap handle to use
*/
virtual void createAppletPixmap(Qt::HANDLE handle);
#ifdef UNIT_TEST
friend class Ut_MExtensionRunner;
#endif
};
//! \internal_end
#endif /* MEXTENSIONRUNNER_H_ */
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