include/tmEventHandler/dragDropHandler.h

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/*******************************************************************************
** Copyright (c) 2003 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/
/*******************************************************************************
** $RCSfile: dragDropHandler.h,v $ $Revision: 1.18 $ $State: Exp $
*******************************************************************************/


#ifndef DRAGDROPHANDLER_H_
#define DRAGDROPHANDLER_H_

#include "tmqt/eventHandler.h"
#include "symbolMapper/modelData.h"
#include "drawerNative/displayPoint.h"

#include <QtCore/QTimer>
#include <QtCore/QDateTime>
#include <QtCore/QHash>

class DtBaseWindow;
class DtDragObject;
class DtTMMapArea;
class DtStdContextMenu;
class DtSymbol;

#include "tmEventHandler/tmEventHandlerDefines.h"
class DT_DLL_tmEventHandler DtDragData : public QObject
{
   Q_OBJECT

public:
   DtDragData(DtTMMapArea* area, DtEventHandler* parent);

   virtual ~DtDragData();

   virtual void reset();

public slots:
   virtual void showDraggedSymbol();
   virtual void symbolRemoved(const DtModelKey& symbol);

public:
   DtDisplayPoint myDragPoint;
   DtDisplayPoint myLastDragPoint;
   QList<DtSymbol*> myDragSymbols;
   bool myEndDrag;
   QTimer* myDragTimer;
   QTime myDrawTimer;
   DtTMMapArea* myMapArea;
   QVector<DtModelKey> myDragData;
   DtEventHandler* myParent;
   Qt::MouseButtons   myMouseButtonState;
};

class DT_DLL_tmEventHandler DtDragDropHandler : public DtEventHandler
{
   Q_OBJECT
   
public:

   DtDragDropHandler();
   
   virtual ~DtDragDropHandler();
   
   virtual bool isValidForDrag(DtTMMapArea* map, DtModelKey &key);

   virtual DtDragObject* createDragObject(DtTMMapArea* activeMap, QString &dragging);

   virtual void dragMove(DtTMMapArea* area, DtModelData* data, const DtPoint& delta);

public:
   static DtEventHandler* create(DtEventController* owner, void* usr);

public slots:
   virtual bool mouseEvent(DtTMMapArea* area, QMouseEvent* evnt, const DtPoint& pnt);

protected slots:
   virtual bool dropSymbols(DtTMMapArea* area, QDropEvent* e);

public:
   virtual bool dropEvent(DtTMMapArea* area, QDropEvent* evnt);
   virtual bool dragMoveEvent(DtTMMapArea* area, QDragMoveEvent* evnt);
   virtual bool dragEnterEvent(DtTMMapArea* area, QDragEnterEvent* evnt);
   virtual bool dragLeaveEvent(DtTMMapArea* area, QDragLeaveEvent* evnt);

protected:
   virtual bool canDrag(DtTMMapArea* area) const;

   virtual void endDrag(DtTMMapArea* area, int timerMsec);

   virtual bool getDropLocationData(DtTMMapArea* area, const QPoint& dropPoint, QString& idStr, QVector<DtPoint>& pnts, double heightChange);

   virtual DtDragData* dragDataForArea(DtTMMapArea* area);

   virtual void tick();

   virtual void dropSymbol(DtTMMapArea* area, const QPoint& dropPoint, DtModelData* symData, double heightChange = 0.);

   virtual int timeout() const;

   virtual bool dragAboutToStart(DtTMMapArea*);

   virtual void modifyPoint(const DtModelData& data, DtPoint& pnt);

   virtual bool dropSymbols(DtTMMapArea* area, const QPoint& dropPoint, const QString& idStr, double heightChange = 0.);

protected:
   QHash<DtTMMapArea*, DtDragData*> myMapDragData;
   bool myCompletedDrag;
};

#endif //DRAGDROPHANDLER_H_