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/*
 *
 * This file is part of Tulip (www.tulip-software.org)
 *
 * Authors: David Auber and the Tulip development Team
 * from LaBRI, University of Bordeaux
 *
 * Tulip is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation, either version 3
 * of the License, or (at your option) any later version.
 *
 * Tulip 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.
 *
 */
///@cond DOXYGEN_HIDDEN

#ifndef MOUSEOBJECT_H
#define MOUSEOBJECT_H

#include <tulip/InteractorComposite.h>
#include <tulip/Camera.h>

namespace tlp {

class NodeLinkDiagramComponent;

/** An interactor class allowing to zoom and pan using the mouse wheel.
 */
class TLP_QT_SCOPE MousePanNZoomNavigator:public InteractorComponent {
public:
  MousePanNZoomNavigator():cameraScaleFactor(1), isGesturing(false) {}
  ~MousePanNZoomNavigator() {}
  bool eventFilter(QObject *, QEvent *);
protected:
  float cameraScaleFactor;
  bool isGesturing;
};

/** An interactor class used to delete a graph element on mouse left click
 */
class TLP_QT_SCOPE MouseElementDeleter:public InteractorComponent {
public:
  MouseElementDeleter() {}
  ~MouseElementDeleter() {}
  bool eventFilter(QObject *, QEvent *);
  void clear();
};

/** An interactor class to translate/rotate using keys or mouse movements,
    or to zoom and pan using the mouse wheel or
 */
class TLP_QT_SCOPE MouseNKeysNavigator: public MousePanNZoomNavigator {
private:
  InteractorComponent *currentSpecInteractorComponent;

  QCursor oldCursor;
public:
  MouseNKeysNavigator() : currentSpecInteractorComponent(NULL), nldc(NULL) {}
  ~MouseNKeysNavigator() {}
  bool eventFilter(QObject *, QEvent *);
  void clear();
  void viewChanged(tlp::View *view);

private :

  // member below are to manage meta node navigation
  tlp::NodeLinkDiagramComponent *nldc;
  std::vector<tlp::Graph*> graphHierarchy;
  std::vector<tlp::Camera> cameraHierarchy;
  std::vector<tlp::node> nodeHierarchy;
  std::vector<float> alphaHierarchy;
};


}
#endif
///@endcond