text: /****************************************************************************
  **
  ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
  ** Contact: http://www.qt-project.org/legal
  **
  ** This file is part of the QtGui module 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 QPLATFORMINTEGRATION_H
  #define QPLATFORMINTEGRATION_H
  
  //
  //  W A R N I N G
  //  -------------
  //
  // This file is part of the QPA API and is not meant to be used
  // in applications. Usage of this API may make your code
  // source and binary incompatible with future versions of Qt.
  //
  
  #include <QtGui/qwindowdefs.h>
  #include <qpa/qplatformscreen.h>
  #include <QtGui/qsurfaceformat.h>
  
  QT_BEGIN_NAMESPACE
  
  
  class QPlatformWindow;
  class QWindow;
  class QPlatformBackingStore;
  class QPlatformFontDatabase;
  class QPlatformClipboard;
  class QPlatformNativeInterface;
  class QPlatformDrag;
  class QPlatformOpenGLContext;
  class QGuiGLFormat;
  class QAbstractEventDispatcher;
  class QPlatformInputContext;
  class QPlatformAccessibility;
  class QPlatformTheme;
  class QPlatformDialogHelper;
  class QPlatformSharedGraphicsCache;
  class QPlatformServices;
  class QKeyEvent;
  class QPlatformOffscreenSurface;
  class QOffscreenSurface;
  
  class Q_GUI_EXPORT QPlatformIntegration
  {
  public:
      enum Capability {
          ThreadedPixmaps = 1,
          OpenGL,
          ThreadedOpenGL,
          SharedGraphicsCache,
          BufferQueueingOpenGL,
          WindowMasks,
          MultipleWindows,
          ApplicationState,
          ForeignWindows,
          NonFullScreenWindows
      };
  
      virtual ~QPlatformIntegration() { }
  
      virtual bool hasCapability(Capability cap) const;
  
      virtual QPlatformPixmap *createPlatformPixmap(QPlatformPixmap::PixelType type) const;
      virtual QPlatformWindow *createPlatformWindow(QWindow *window) const = 0;
      virtual QPlatformBackingStore *createPlatformBackingStore(QWindow *window) const = 0;
  #ifndef QT_NO_OPENGL
      virtual QPlatformOpenGLContext *createPlatformOpenGLContext(QOpenGLContext *context) const;
  #endif
      virtual QPlatformSharedGraphicsCache *createPlatformSharedGraphicsCache(const char *cacheId) const;
      virtual QPaintEngine *createImagePaintEngine(QPaintDevice *paintDevice) const;
  
  // Event dispatcher:
      virtual QAbstractEventDispatcher *guiThreadEventDispatcher() const = 0;
  
  //Deeper window system integrations
      virtual QPlatformFontDatabase *fontDatabase() const;
  #ifndef QT_NO_CLIPBOARD
      virtual QPlatformClipboard *clipboard() const;
  #endif
  #ifndef QT_NO_DRAGANDDROP
      virtual QPlatformDrag *drag() const;
  #endif
      virtual QPlatformInputContext *inputContext() const;
  #ifndef QT_NO_ACCESSIBILITY
      virtual QPlatformAccessibility *accessibility() const;
  #endif
  
      // Access native handles. The window handle is already available from Wid;
      virtual QPlatformNativeInterface *nativeInterface() const;
  
      virtual QPlatformServices *services() const;
  
      enum StyleHint {
          CursorFlashTime,
          KeyboardInputInterval,
          MouseDoubleClickInterval,
          StartDragDistance,
          StartDragTime,
          KeyboardAutoRepeatRate,
          ShowIsFullScreen,
          PasswordMaskDelay,
          FontSmoothingGamma,
          StartDragVelocity,
          UseRtlExtensions,
          SynthesizeMouseFromTouchEvents,
          PasswordMaskCharacter
      };
  
      virtual QVariant styleHint(StyleHint hint) const;
  
      virtual Qt::KeyboardModifiers queryKeyboardModifiers() const;
      virtual QList<int> possibleKeys(const QKeyEvent *) const;
  
      virtual QStringList themeNames() const;
      virtual QPlatformTheme *createPlatformTheme(const QString &name) const;
  
      virtual QPlatformOffscreenSurface *createPlatformOffscreenSurface(QOffscreenSurface *surface) const;
  
  protected:
      void screenAdded(QPlatformScreen *screen);
  };
  
  QT_END_NAMESPACE
  
  #endif // QPLATFORMINTEGRATION_H
  