VRS - The Virtual Rendering System

version 3.3

interaction.h

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 /**********************************************************************
 VRS - The Virtual Rendering System
 Copyright (C) 2001 Computer Graphics Systems Group at the 
 Hasso-Plattner-Institute, Potsdam, Germany.
 This library 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 2.1 of the License, or (at your option) any later version.
 This library 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 Lesser General Public License for more details.
 You should have received a copy of the GNU Lesser+ General Public
 License along with this library; if not, write to the FreeSoftware 
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA, 02111-1307, USA.
 **********************************************************************/
// $Id: interaction.h 6014 2007-08-09 07:51:16Z Konstantin_Baumann $
// $Date: 2007-08-09 09:51:16 +0200 (Thu, 09 Aug 2007) $
// $Revision: 6014 $
// $State$
// $Author: Konstantin_Baumann $
//
// $Log$
// Revision 1.17  2005/01/03 01:43:10  klimetschek
// - modified win32 project layout, splitted vrs.vcproj into vrs_container, vrs_core, vrs_sg, vrs_image, vrs_opengl and vrs_io
// - removed vrs.vcproj
// minor things:
// - added all glutexamples to vrs4glut.sln
// - fixed some problems in glutexamples
// - removed all project references from all VS projects (using solution wide project dependencies instead)
//
// Revision 1.16  2004/12/08 13:28:27  kirsch
// Class comment changed again (Doxygen style)
//
// Revision 1.15  2004/10/28 14:16:01  basch
// Class comment changed (Doxygen style)
//
// Revision 1.14  2004/03/12 16:28:41  baumann
// macros VRS_NAMESPACE_BEGIN/_END expanded and removed
//
// Revision 1.13  2004/01/19 11:43:58  baumann
// serialization mechanism improved
//
// Revision 1.12  2003/11/07 14:19:25  kirsch
// removed leading underscore from include guards
//
// Revision 1.11  2003/02/24 10:05:57  baumann
// changed return type of BehaviorNode::handle() and Manipulator::drag*()
// from "int" to "BehaviorNode::InvalidationHint"
//
// Revision 1.10  2002/10/29 10:32:53  baumann
// macros VRS_CLASSNAME_* and VRS_IMPL_TYPEINFO_* removed
//
// Revision 1.9  2002/05/15 16:05:11  baumann
// unneeded method BehaviorNode::canHandle() removed (from all sub classes too)
//
// Revision 1.8  2002/03/03 21:44:26  kosta
// VRS_TYPEINFO-macro rewritten
//
// Revision 1.7  2002/02/19 10:34:20  kosta
// undone all changes since 2002-02-15
//
// Revision 1.4  2002/02/05 07:48:26  kosta
// new persistency macros:
//     VRS_SERIALIZABLE(CLASS_NAME);
//     VRS_SERIALIZABLE_ABSTRACT_CLASS(CLASS_NAME);
//     VRS_SERIALIZABLE_NO_SO_CLASS(CLASS_NAME)
//
// Revision 1.3  2002/01/15 16:25:55  kosta
// macros rewritten for a better namespace support
//
// Revision 1.2  2001/11/13 16:36:31  kirsch
// changed line feed to unix style (removed control-M)
//
// Revision 1.1.1.1  2001/06/08 08:09:21  kirsch
// imported alpha-version by olli 
//


#ifndef VRS_INTERACTION_H
#define VRS_INTERACTION_H

#include <vrs/sg/leafbehavior.h>
#include <vrs/sg/condition.h>

namespace VRS {

class Event;


class VRS_CORE_API Interaction : public LeafBehavior {
    
protected:
    Interaction(
        Condition* forStart,
        Condition* forProcess,
        Condition* forEnd,
        Condition* forCancel = 0
        );
    
public:
    
    virtual bool started() const;
    virtual bool canceled() const;
    
    void setStartCondition(Condition* cond);
    void setEndCondition(Condition* cond);
    void setProcessCondition(Condition* cond);
    void setCancelCondition(Condition* cond);
    Condition* getStartCondition() const;
    Condition* getProcessCondition() const;
    Condition* getEndCondition() const;
    Condition* getCancelCondition() const;
    
    virtual BehaviorNode::InvalidationHint handle(Event*);
    VRS_TYPEINFO(Interaction, LeafBehavior);
    VRS_SERIALIZABLE_ABSTRACT_CLASS(Interaction);
    
protected:
    virtual int start(Event*);
    virtual int process(Event*);
    virtual int end(Event*);
    virtual int cancel(Event*);
    
private:
    SO<Condition> startCond_;
    SO<Condition> endCond_;
    SO<Condition> processCond_;
    SO<Condition> cancelCond_;
    bool processing_;
    bool canceled_;
};

inline void Interaction::setStartCondition(Condition* c) {
    startCond_ = c; modified();
}
inline void Interaction::setProcessCondition(Condition* c) {
    processCond_ = c; modified();
}
inline void Interaction::setEndCondition(Condition* c) {
    endCond_ = c; modified();
}
inline void Interaction::setCancelCondition(Condition* c) {
    cancelCond_ = c; modified();
}

inline Condition* Interaction::getStartCondition() const {
    return startCond_;
}
inline Condition* Interaction::getProcessCondition() const {
    return processCond_;
}
inline Condition* Interaction::getEndCondition() const {
    return endCond_;
}
inline Condition* Interaction::getCancelCondition() const {
    return cancelCond_;
}

inline bool Interaction::started() const {
    return processing_;
}
inline bool Interaction::canceled() const {
    return canceled_;
}

} // namespace VRS

#endif // VRS_INTERACTION_H

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