/*
 * QCameraPathDropSite.cpp
 * $Id: 
 *
 * Copyright (C) 2001 Thomas Woerner, Michael Meissner, Markus Janich
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * As a special exception to the GPL, the QGLViewer authors (Markus
 * Janich, Michael Meissner, Richard Guenther, Alexander Buck and Thomas
 * Woerner) give permission to link this program with Qt (non-)commercial
 * edition, and distribute the resulting executable, without including
 * the source code for the Qt (non-)commercial edition in the source
 * distribution.
 *
 */

/*
  [tw] 2001/05/08 initial version
*/


// Qt
///////
#include <qevent.h>
#include <qpixmap.h>
#include <qdragobject.h>

// Own
////////
#include "QCameraPathDropSite.h"
#include "QCameraPathDrag.h"
#include "pictures/dragcamerapath.xpm"



// Function  : QCameraDropSite
// Parameters: CCamera *pCamera,
//             QWidget *parent,
//             const char *sName
// Purpose   : default constructor
// Comments  : 
QCameraPathDropSite::QCameraPathDropSite(QWidget *parent, const char *sName)
    : QLabel(parent, sName)
/****************************************************************/
{
   QPixmap dragCameraPix((const char **) dragcamerapath_xpm);

   if (!(dragCameraPix.isNull()))
      setPixmap(dragCameraPix);
   else
      setText("Drag and Drop");
   setAlignment(Qt::AlignCenter);
    
   setFrameStyle(QFrame::Raised + QFrame::WinPanel);
   setAcceptDrops(TRUE);
}



// Function  : dragEnterEvent
// Parameters: QDragEnterEvent *pqEvent
// Purpose   : handles QDragEnterEvents
// Comments  : 
void QCameraPathDropSite::dragEnterEvent(QDragEnterEvent *pqEvent)
/****************************************************************/
{
   if (!isEnabled())
     return;

   if (QCameraPathDrag::canDecode(pqEvent)) {
      pqEvent->accept();
      setFrameStyle(QFrame::Sunken + QFrame::WinPanel);  
   }
}



// Function  : dragLeaveEvent
// Parameters: QDragLeaveEvent *pqEvent
// Purpose   : handles QDragLeaveEvents
// Comments  : 
void QCameraPathDropSite::dragLeaveEvent(QDragLeaveEvent *)
/****************************************************************/
{
   setFrameStyle(QFrame::Raised + QFrame::WinPanel);
}



// Function  : dropEvent
// Parameters: QDropEvent *pqEvent
// Purpose   : handles QDropEvents
// Comments  : 
void QCameraPathDropSite::dropEvent(QDropEvent *pqEvent)
/****************************************************************/
{
   CList<CCamera> list;

   if (pqEvent->source() != this)
      if (QCameraPathDrag::decode(pqEvent, list))
         emit(sigCameraPathDropped(list));

   setFrameStyle(QFrame::Raised + QFrame::WinPanel);
}



// Function  : mousePressEvent
// Parameters: QMouseEvent *pqEvent
// Purpose   : handles mouse press events
// Comments  : 
void QCameraPathDropSite::mousePressEvent(QMouseEvent *)
/****************************************************************/
{
   QDragObject *pqDragObject;

   if (m_CameraList.getNumObjects() > 0) {
      setFrameStyle(QFrame::Sunken + QFrame::WinPanel);  
      pqDragObject = new QCameraPathDrag(m_CameraList, this);
      pqDragObject->setPixmap(QPixmap((const char **) dragcamerapath_xpm),
				QPoint(13, 10));
      pqDragObject->dragCopy();
   }
}



// Function  : mouseReleaseEvent
// Parameters: QMouseEvent *pqEvent
// Purpose   : handles mouse release events
// Comments  : 
void QCameraPathDropSite::mouseReleaseEvent(QMouseEvent *)
/****************************************************************/
{
   setFrameStyle(QFrame::Raised + QFrame::WinPanel);
}