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//---------------------------------------------------------------------------
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// Project: OpenWalnut ( http://www.openwalnut.org )
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// Copyright 2009 OpenWalnut Community, BSV@Uni-Leipzig and CNCF@MPI-CBS
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// For more information see http://www.openwalnut.org/copying
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// This file is part of OpenWalnut.
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// OpenWalnut is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// OpenWalnut is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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// You should have received a copy of the GNU Lesser General Public License
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// along with OpenWalnut. If not, see <http://www.gnu.org/licenses/>.
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//---------------------------------------------------------------------------
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#ifndef WTRANSFERFUNCTIONSCENE_H
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#define WTRANSFERFUNCTIONSCENE_H
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#include "QtGui/QGraphicsScene"
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class WTransferFunctionWidget;
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* The scene for our visualization of the transfer function.
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* It differs from the QT implementation because it overloads
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* the Drag&drop methods to allow users to drop colors onto
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* the graph, which adds new nodes in the color representation.
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* This has to be done here according to the QT documentation
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* as we cannot drop something in a location where no object
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class WTransferFunctionScene : public QGraphicsScene
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/** type of base class for cleaner programming */
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typedef QGraphicsScene BaseClass;
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* Default constructor.
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* \param parent the parent QObject, typically the QWidget
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explicit WTransferFunctionScene( QObject*parent =0 );
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virtual ~WTransferFunctionScene();
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* Checks whether the drag is inside the main rectangle of the scene
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* and whether the dragged object is of type QColor or similar.
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* \param event the event to handle
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virtual void dragMoveEvent( QGraphicsSceneDragDropEvent* event );
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* Allows drop of QColor-alike objects and creates new color control points
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* \param event the event to handle
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virtual void dropEvent( QGraphicsSceneDragDropEvent* event );
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/** storage of the widget as this currently manages the data */
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WTransferFunctionWidget *myparent;
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#endif // WTRANSFERFUNCTIONSCENE_H