text: /****************************************************************************
  **
  ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
  ** 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
  ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
  **
  ** In addition, as a special exception, Digia gives you certain additional
  ** rights.  These rights are described in the Digia Qt LGPL Exception
  ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
  **
  ** 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
  ** met: http://www.gnu.org/copyleft/gpl.html.
  **
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/
  
  #ifndef QDIRECTFBCONVENIENCE_H
  #define QDIRECTFBCONVENIENCE_H
  
  #include <QtGui/qimage.h>
  #include <QtCore/QHash>
  #include <QtCore/QEvent>
  #include <QtGui/QPixmap>
  
  #include <directfb.h>
  
  QT_BEGIN_NAMESPACE
  
  class QDirectFbScreen;
  class QPlatformScreen;
  
  class QDirectFbKeyMap: public QHash<DFBInputDeviceKeySymbol, Qt::Key>
  {
  public:
      QDirectFbKeyMap();
  };
  
  
  class QDirectFbConvenience
  {
  public:
      static QImage::Format imageFormatFromSurfaceFormat(const DFBSurfacePixelFormat format, const DFBSurfaceCapabilities caps);
      static bool pixelFomatHasAlpha(const DFBSurfacePixelFormat format) { return (1 << 16) & format; }
      static int colorDepthForSurface(const DFBSurfacePixelFormat format);
  
      //This is set by the graphicssystem constructor
      static IDirectFB *dfbInterface();
      static IDirectFBDisplayLayer *dfbDisplayLayer(int display = DLID_PRIMARY);
  
      static IDirectFBSurface *dfbSurfaceForPlatformPixmap(QPlatformPixmap *);
  
      static Qt::MouseButton mouseButton(DFBInputDeviceButtonIdentifier identifier);
      static Qt::MouseButtons mouseButtons(DFBInputDeviceButtonMask mask);
      static Qt::KeyboardModifiers keyboardModifiers(DFBInputDeviceModifierMask mask);
      static QEvent::Type eventType(DFBWindowEventType type);
  
      static QDirectFbKeyMap *keyMap();
  
  private:
      static QDirectFbKeyMap *dfbKeymap;
      friend class QDirectFbIntegration;
  };
  
  template <typename T> struct QDirectFBInterfaceCleanupHandler
  {
      static void cleanup(T *t)
      {
          if (!t)
              return;
          t->Release(t);
      }
  };
  
  template <typename T>
  class QDirectFBPointer : public QScopedPointer<T, QDirectFBInterfaceCleanupHandler<T> >
  {
  public:
      QDirectFBPointer(T *t = 0)
          : QScopedPointer<T, QDirectFBInterfaceCleanupHandler<T> >(t)
      {}
  
      T** outPtr()
      {
          this->reset(0);
          return &this->d;
      }
  };
  
  // Helper conversions from internal to DFB types
  QDirectFbScreen *toDfbScreen(QWindow *window);
  IDirectFBDisplayLayer *toDfbLayer(QPlatformScreen *screen);
  
  #define QDFB_STRINGIFY(x) #x
  #define QDFB_TOSTRING(x) QDFB_STRINGIFY(x)
  #define QDFB_PRETTY \
      (__FILE__ ":" QDFB_TOSTRING(__LINE__))
  
  QT_END_NAMESPACE
  
  
  #endif // QDIRECTFBCONVENIENCE_H
  