text: /***************************************************************************
  **
  ** Copyright (C) 2013 BlackBerry Limited. All rights reserved.
  ** Contact: http://www.qt-project.org/legal
  **
  ** This file is part of the plugins of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:LGPL$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and Digia.  For licensing terms and
  ** conditions see http://qt.digia.com/licensing.  For further information
  ** use the contact form at http://qt.digia.com/contact-us.
  **
  ** GNU Lesser General Public License Usage
  ** Alternatively, 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
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  ** rights.  These rights are described in the Digia Qt LGPL Exception
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  **
  ** GNU General Public License Usage
  ** Alternatively, this file may be used under the terms of the GNU
  ** General Public License version 3.0 as published by the Free Software
  ** Foundation and appearing in the file LICENSE.GPL included in the
  ** packaging of this file.  Please review the following information to
  ** ensure the GNU General Public License version 3.0 requirements will be
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  ****************************************************************************/
  
  #ifndef QQNXEGLWINDOW_H
  #define QQNXEGLWINDOW_H
  
  #include "qqnxwindow.h"
  #include <QtCore/QMutex>
  
  QT_BEGIN_NAMESPACE
  
  class QQnxGLContext;
  
  class QQnxEglWindow : public QQnxWindow
  {
  public:
      QQnxEglWindow(QWindow *window, screen_context_t context, bool needRootWindow);
      ~QQnxEglWindow();
  
      void createEGLSurface();
      void destroyEGLSurface();
      void swapEGLBuffers();
      EGLSurface getSurface();
  
      void setPlatformOpenGLContext(QQnxGLContext *platformOpenGLContext);
      QQnxGLContext *platformOpenGLContext() const { return m_platformOpenGLContext; }
  
      void setGeometry(const QRect &rect);
  
  protected:
      int pixelFormat() const;
      void resetBuffers();
  
  private:
      QSize m_requestedBufferSize;
  
      // This mutex is used to protect access to the m_requestedBufferSize
      // member. This member is used in conjunction with QQnxGLContext::requestNewSurface()
      // to coordinate recreating the EGL surface which involves destroying any
      // existing EGL surface; resizing the native window buffers; and creating a new
      // EGL surface. All of this has to be done from the thread that is calling
      // QQnxGLContext::makeCurrent()
      mutable QMutex m_mutex;
  
      QQnxGLContext *m_platformOpenGLContext;
      QAtomicInt m_newSurfaceRequested;
      EGLSurface m_eglSurface;
  };
  
  QT_END_NAMESPACE
  
  #endif // QQNXEGLWINDOW_H
  