--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hbcore/image/hbeglstate_p.h	Mon Apr 19 14:02:13 2010 +0300
@@ -0,0 +1,170 @@
+/****************************************************************************
+**
+** 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 "hbforegroundwatcher_p.h"
+#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;
+    }
+
+    int isBackground() const
+    {
+        return background;
+    }
+
+    void deref(HbEglStates *& instance)
+    {
+        if (instance && --(instance->refCount) == 0) {
+        }
+    }
+
+    void removeVGImage(VGImage * image);
+
+    void addVGImage(VGImage * image)
+    {
+        if (image) {
+            imageList.insert(image);
+        }
+    }
+
+    EGLDisplay  display;
+    EGLSurface  currentReadSurface;
+    EGLSurface  currentWriteSurface;
+    EGLContext  eglContext;
+    EGLConfig   eglConfig;
+
+    static HbEglStates *global();
+
+public slots:
+
+    void handleForegroundLost();
+    void handleForegroundGained();
+
+private:
+
+    void clearImages();
+
+    void reset( EGLDisplay d = 0,
+                EGLSurface rs = 0,
+                EGLSurface ds = 0,
+                EGLContext  c = 0,
+                EGLConfig cfg = 0 );
+
+    int         refCount;
+    int         init;
+    int         background;
+    HbForegroundWatcher * fgWatcher;
+
+    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
+