text: /****************************************************************************
  **
  ** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
  ** Contact: http://www.qt-project.org/legal
  **
  ** This file is part of the QtWidgets module of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:LGPL21$
  ** 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 or version 3 as published by the Free
  ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
  ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
  ** following information to ensure the GNU Lesser General Public License
  ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
  ** 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.
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/
  
  #ifndef QWIDGETWINDOW_P_H
  #define QWIDGETWINDOW_P_H
  
  //
  //  W A R N I N G
  //  -------------
  //
  // This file is not part of the Qt API.  It exists purely as an
  // implementation detail.  This header file may change from version to
  // version without notice, or even be removed.
  //
  // We mean it.
  //
  
  #include <QtGui/qwindow.h>
  
  #include <QtCore/private/qobject_p.h>
  #include <QtGui/private/qevent_p.h>
  
  QT_BEGIN_NAMESPACE
  
  
  class QCloseEvent;
  class QMoveEvent;
  
  class QWidgetWindow : public QWindow
  {
      Q_OBJECT
  public:
      QWidgetWindow(QWidget *widget);
      ~QWidgetWindow();
  
      QWidget *widget() const { return m_widget; }
  #ifndef QT_NO_ACCESSIBILITY
      QAccessibleInterface *accessibleRoot() const;
  #endif
  
      QObject *focusObject() const;
  protected:
      bool event(QEvent *);
  
      void handleCloseEvent(QCloseEvent *);
      void handleEnterLeaveEvent(QEvent *);
      void handleFocusInEvent(QFocusEvent *);
      void handleKeyEvent(QKeyEvent *);
      void handleMouseEvent(QMouseEvent *);
      void handleNonClientAreaMouseEvent(QMouseEvent *);
      void handleTouchEvent(QTouchEvent *);
      void handleMoveEvent(QMoveEvent *);
      void handleResizeEvent(QResizeEvent *);
  #ifndef QT_NO_WHEELEVENT
      void handleWheelEvent(QWheelEvent *);
  #endif
  #ifndef QT_NO_DRAGANDDROP
      void handleDragEnterMoveEvent(QDragMoveEvent *);
      void handleDragLeaveEvent(QDragLeaveEvent *);
      void handleDropEvent(QDropEvent *);
  #endif
      void handleExposeEvent(QExposeEvent *);
      void handleWindowStateChangedEvent(QWindowStateChangeEvent *event);
      bool nativeEvent(const QByteArray &eventType, void *message, long *result);
  #ifndef QT_NO_TABLETEVENT
      void handleTabletEvent(QTabletEvent *);
  #endif
  #ifndef QT_NO_GESTURES
      void handleGestureEvent(QNativeGestureEvent *);
  #endif
  #ifndef QT_NO_CONTEXTMENU
      void handleContextMenuEvent(QContextMenuEvent *);
  #endif
  
  private slots:
      void updateObjectName();
      void handleScreenChange();
  
  private:
      void repaintWindow();
      bool updateSize();
      bool updatePos();
      void updateMargins();
      void updateNormalGeometry();
  
      enum FocusWidgets {
          FirstFocusWidget,
          LastFocusWidget
      };
      QWidget *getFocusWidget(FocusWidgets fw);
  
      QWidget *m_widget;
      QPointer<QWidget> m_implicit_mouse_grabber;
  #ifndef QT_NO_DRAGANDDROP
      QPointer<QWidget> m_dragTarget;
  #endif
  };
  
  QT_END_NAMESPACE
  
  #endif // QWIDGETWINDOW_P_H
  