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 QWINDOWSYSTEMINTERFACE_H
  #define QWINDOWSYSTEMINTERFACE_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 <QtCore/QTime>
  #include <QtGui/qwindowdefs.h>
  #include <QtCore/QEvent>
  #include <QtCore/QAbstractEventDispatcher>
  #include <QtGui/QScreen>
  #include <QtGui/QWindow>
  #include <QtCore/QWeakPointer>
  #include <QtCore/QMutex>
  #include <QtGui/QTouchEvent>
  #include <QtCore/QEventLoop>
  #include <QtGui/QVector2D>
  
  QT_BEGIN_NAMESPACE
  
  class QMimeData;
  class QTouchDevice;
  class QPlatformDragQtResponse;
  class QPlatformDropQtResponse;
  
  
  class Q_GUI_EXPORT QWindowSystemInterface
  {
  public:
      static void handleMouseEvent(QWindow *w, const QPointF & local, const QPointF & global, Qt::MouseButtons b, Qt::KeyboardModifiers mods = Qt::NoModifier);
      static void handleMouseEvent(QWindow *w, ulong timestamp, const QPointF & local, const QPointF & global, Qt::MouseButtons b, Qt::KeyboardModifiers mods = Qt::NoModifier);
      static void handleFrameStrutMouseEvent(QWindow *w, const QPointF & local, const QPointF & global, Qt::MouseButtons b, Qt::KeyboardModifiers mods = Qt::NoModifier);
      static void handleFrameStrutMouseEvent(QWindow *w, ulong timestamp, const QPointF & local, const QPointF & global, Qt::MouseButtons b, Qt::KeyboardModifiers mods = Qt::NoModifier);
  
      static bool tryHandleShortcutEvent(QWindow *w, int k, Qt::KeyboardModifiers mods,
                                                    const QString & text = QString(), bool autorep = false, ushort count = 1);
      static bool tryHandleShortcutEvent(QWindow *w, ulong timestamp, int k, Qt::KeyboardModifiers mods,
                                                    const QString & text = QString(), bool autorep = false, ushort count = 1);
  
      static bool tryHandleExtendedShortcutEvent(QWindow *w, int k, Qt::KeyboardModifiers mods,
                                                            quint32 nativeScanCode, quint32 nativeVirtualKey, quint32 nativeModifiers,
                                                            const QString & text = QString(), bool autorep = false, ushort count = 1);
      static bool tryHandleExtendedShortcutEvent(QWindow *w, ulong timestamp, int k, Qt::KeyboardModifiers mods,
                                                            quint32 nativeScanCode, quint32 nativeVirtualKey, quint32 nativeModifiers,
                                                            const QString & text = QString(), bool autorep = false, ushort count = 1);
  
      static void handleKeyEvent(QWindow *w, QEvent::Type t, int k, Qt::KeyboardModifiers mods, const QString & text = QString(), bool autorep = false, ushort count = 1);
      static void handleKeyEvent(QWindow *w, ulong timestamp, QEvent::Type t, int k, Qt::KeyboardModifiers mods, const QString & text = QString(), bool autorep = false, ushort count = 1);
  
      static void handleExtendedKeyEvent(QWindow *w, QEvent::Type type, int key, Qt::KeyboardModifiers modifiers,
                                         quint32 nativeScanCode, quint32 nativeVirtualKey,
                                         quint32 nativeModifiers,
                                         const QString& text = QString(), bool autorep = false,
                                         ushort count = 1);
      static void handleExtendedKeyEvent(QWindow *w, ulong timestamp, QEvent::Type type, int key, Qt::KeyboardModifiers modifiers,
                                         quint32 nativeScanCode, quint32 nativeVirtualKey,
                                         quint32 nativeModifiers,
                                         const QString& text = QString(), bool autorep = false,
                                         ushort count = 1);
      static void handleWheelEvent(QWindow *w, const QPointF & local, const QPointF & global, QPoint pixelDelta, QPoint angleDelta, Qt::KeyboardModifiers mods = Qt::NoModifier, Qt::ScrollPhase phase = Qt::ScrollUpdate);
      static void handleWheelEvent(QWindow *w, ulong timestamp, const QPointF & local, const QPointF & global, QPoint pixelDelta, QPoint angleDelta, Qt::KeyboardModifiers mods = Qt::NoModifier, Qt::ScrollPhase phase = Qt::ScrollUpdate);
  
      // Wheel event compatibility functions. Will be removed: do not use.
      static void handleWheelEvent(QWindow *w, const QPointF & local, const QPointF & global, int d, Qt::Orientation o, Qt::KeyboardModifiers mods = Qt::NoModifier);
      static void handleWheelEvent(QWindow *w, ulong timestamp, const QPointF & local, const QPointF & global, int d, Qt::Orientation o, Qt::KeyboardModifiers mods = Qt::NoModifier);
  
      struct TouchPoint {
          TouchPoint() : id(0), pressure(0), state(Qt::TouchPointStationary), flags(0) { }
          int id;                 // for application use
          QPointF normalPosition; // touch device coordinates, (0 to 1, 0 to 1)
          QRectF area;            // the touched area, centered at position in screen coordinates
          qreal pressure;         // 0 to 1
          Qt::TouchPointState state; //Qt::TouchPoint{Pressed|Moved|Stationary|Released}
          QVector2D velocity;     // in screen coordinate system, pixels / seconds
          QTouchEvent::TouchPoint::InfoFlags flags;
          QVector<QPointF> rawPositions; // in screen coordinates
      };
  
      static void registerTouchDevice(QTouchDevice *device);
      static void handleTouchEvent(QWindow *w, QTouchDevice *device,
                                   const QList<struct TouchPoint> &points, Qt::KeyboardModifiers mods = Qt::NoModifier);
      static void handleTouchEvent(QWindow *w, ulong timestamp, QTouchDevice *device,
                                   const QList<struct TouchPoint> &points, Qt::KeyboardModifiers mods = Qt::NoModifier);
      static void handleTouchCancelEvent(QWindow *w, QTouchDevice *device, Qt::KeyboardModifiers mods = Qt::NoModifier);
      static void handleTouchCancelEvent(QWindow *w, ulong timestamp, QTouchDevice *device, Qt::KeyboardModifiers mods = Qt::NoModifier);
  
      static void handleGeometryChange(QWindow *w, const QRect &newRect, const QRect &oldRect = QRect());
      static void handleCloseEvent(QWindow *w, bool *accepted = 0);
      static void handleEnterEvent(QWindow *w, const QPointF &local = QPointF(), const QPointF& global = QPointF());
      static void handleLeaveEvent(QWindow *w);
      static void handleEnterLeaveEvent(QWindow *enter, QWindow *leave, const QPointF &local = QPointF(), const QPointF& global = QPointF());
      static void handleWindowActivated(QWindow *w, Qt::FocusReason r = Qt::OtherFocusReason);
  
      static void handleWindowStateChanged(QWindow *w, Qt::WindowState newState);
      static void handleWindowScreenChanged(QWindow *w, QScreen *newScreen);
  
      static void handleApplicationStateChanged(Qt::ApplicationState newState);
  
      static void handleExposeEvent(QWindow *tlw, const QRegion &region);
  
  #ifndef QT_NO_DRAGANDDROP
      // Drag and drop. These events are sent immediately.
      static QPlatformDragQtResponse handleDrag(QWindow *w, const QMimeData *dropData, const QPoint &p, Qt::DropActions supportedActions);
      static QPlatformDropQtResponse handleDrop(QWindow *w, const QMimeData *dropData, const QPoint &p, Qt::DropActions supportedActions);
  #endif
  
      static bool handleNativeEvent(QWindow *window, const QByteArray &eventType, void *message, long *result);
  
      // Changes to the screen
      static void handleScreenOrientationChange(QScreen *screen, Qt::ScreenOrientation newOrientation);
      static void handleScreenGeometryChange(QScreen *screen, const QRect &newGeometry);
      static void handleScreenAvailableGeometryChange(QScreen *screen, const QRect &newAvailableGeometry);
      static void handleScreenLogicalDotsPerInchChange(QScreen *screen, qreal newDpiX, qreal newDpiY);
      static void handleScreenRefreshRateChange(QScreen *screen, qreal newRefreshRate);
  
      static void handleThemeChange(QWindow *tlw);
  
      static void handleFileOpenEvent(const QString& fileName);
      static void handleFileOpenEvent(const QUrl &url);
  
      static void handleTabletEvent(QWindow *w, ulong timestamp, bool down, const QPointF &local, const QPointF &global,
                                    int device, int pointerType, qreal pressure, int xTilt, int yTilt,
                                    qreal tangentialPressure, qreal rotation, int z, qint64 uid,
                                    Qt::KeyboardModifiers modifiers = Qt::NoModifier);
      static void handleTabletEvent(QWindow *w, bool down, const QPointF &local, const QPointF &global,
                                    int device, int pointerType, qreal pressure, int xTilt, int yTilt,
                                    qreal tangentialPressure, qreal rotation, int z, qint64 uid,
                                    Qt::KeyboardModifiers modifiers = Qt::NoModifier);
      static void handleTabletEnterProximityEvent(ulong timestamp, int device, int pointerType, qint64 uid);
      static void handleTabletEnterProximityEvent(int device, int pointerType, qint64 uid);
      static void handleTabletLeaveProximityEvent(ulong timestamp, int device, int pointerType, qint64 uid);
      static void handleTabletLeaveProximityEvent(int device, int pointerType, qint64 uid);
  
  #ifndef QT_NO_GESTURES
      static void handleGestureEvent(QWindow *window,  ulong timestamp, Qt::NativeGestureType type,
                                     QPointF &local, QPointF &global);
      static void handleGestureEventWithRealValue(QWindow *window,  ulong timestamp, Qt::NativeGestureType type,
                                                  qreal value, QPointF &local, QPointF &global);
      static void handleGestureEventWithSequenceIdAndValue(QWindow *window, ulong timestamp,Qt::NativeGestureType type,
                                                           ulong sequenceId, quint64 value, QPointF &local, QPointF &global);
  #endif // QT_NO_GESTURES
  
      static void handlePlatformPanelEvent(QWindow *w);
  #ifndef QT_NO_CONTEXTMENU
      static void handleContextMenuEvent(QWindow *w, bool mouseTriggered,
                                         const QPoint &pos, const QPoint &globalPos,
                                         Qt::KeyboardModifiers modifiers);
  #endif
  #ifndef QT_NO_WHATSTHIS
      static void handleEnterWhatsThisEvent();
  #endif
  
      // For event dispatcher implementations
      static bool sendWindowSystemEvents(QEventLoop::ProcessEventsFlags flags);
      static void setSynchronousWindowsSystemEvents(bool enable);
      static void flushWindowSystemEvents();
      static void deferredFlushWindowSystemEvents();
      static int windowSystemEventsQueued();
  };
  
  #ifndef QT_NO_DEBUG_STREAM
  Q_GUI_EXPORT QDebug operator<<(QDebug dbg, const QWindowSystemInterface::TouchPoint &p);
  #endif
  
  QT_END_NAMESPACE
  
  #endif // QWINDOWSYSTEMINTERFACE_H
  