/****************************************************************************
**
** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (developer.feedback@nokia.com)
**
** This file is part of the HbCore module of the UI Extensions for Mobile.
**
** GNU Lesser General Public License Usage
** This file may be used 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.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at developer.feedback@nokia.com.
**
****************************************************************************/
#ifndef HBEGLSTATE_P_H
#define HBEGLSTATE_P_H
#include <EGL/egl.h>
#include <VG/openvg.h>
#include <QMutex>
#include <QSet>
#include "hbnvgiconimpl_p.h"
#include "hbnvgenginepool_p.h"
class HbNvgIconImpl;
class HbEglStates: public QObject
{
Q_OBJECT
public:
HbEglStates( EGLDisplay d,
EGLSurface rs,
EGLSurface ds,
EGLContext c,
EGLConfig cfg = 0 );
HbEglStates();
~HbEglStates()
{
clearImages();
}
void set( EGLDisplay d,
EGLSurface rs,
EGLSurface ds,
EGLContext c,
EGLConfig cfg = 0 )
{
reset(d, rs, ds, c, cfg);
init = 1;
}
void ref()
{
++refCount;
}
int initialized() const
{
return init;
}
void deref(HbEglStates *& instance)
{
if (instance && --(instance->refCount) == 0) {
}
}
void removeVGImage(VGImage * image);
void addVGImage(VGImage * image)
{
if (image) {
imageList.insert(image);
}
}
void handleForegroundLost();
EGLDisplay display;
EGLSurface currentReadSurface;
EGLSurface currentWriteSurface;
EGLContext eglContext;
EGLConfig eglConfig;
static HbEglStates *global();
private:
void clearImages();
void reset( EGLDisplay d = 0,
EGLSurface rs = 0,
EGLSurface ds = 0,
EGLContext c = 0,
EGLConfig cfg = 0 );
int refCount;
int init;
typedef QSet<VGImage*> ImageList;
typedef ImageList::iterator ImageListIter;
ImageList imageList;
QMutex mutex;
};
/* HbEglStateRestorer
*
* Saves the EGL state passed in the constructor.
* This class will help in saving the state even in the case of exception.
*/
class HbEglStateRestorer
{
public:
HbEglStateRestorer( EGLDisplay d,
EGLSurface rs,
EGLSurface ds,
EGLContext c )
: display(d),
currentReadSurface(rs),
currentWriteSurface(ds),
eglContext(c)
{
restored = 0;
}
void restore();
~HbEglStateRestorer()
{
restore();
}
private:
EGLDisplay display;
EGLSurface currentReadSurface;
EGLSurface currentWriteSurface;
EGLContext eglContext;
EGLConfig eglConfig;
int restored;
};
#endif