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/*
*
* Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* 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.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
*
*/
// -*- C++ -*-
/*
* Copyright (C) 1990,91,92 Silicon Graphics, Inc.
*
_______________________________________________________________________
______________ S I L I C O N G R A P H I C S I N C . ____________
|
| $Revision: 1.1.1.1 $
|
| Description:
| Data sensor that is attached to a field in a node or elsewhere.
| The sensor is scheduled when a change is made to that field. Note:
| the field must be contained within a node or function, or
| attachment will not work.
|
| Author(s) : Paul Strauss
|
______________ S I L I C O N G R A P H I C S I N C . ____________
_______________________________________________________________________
*/
#ifndef _SO_FIELD_SENSOR_
#define _SO_FIELD_SENSOR_
#include <Inventor/sensors/SoDataSensor.h>
class SoFieldContainer;
// C-api: prefix=SoFieldSens
class SoFieldSensor : public SoDataSensor {
public:
// Constructors. The second form takes standard callback function and data
SoFieldSensor();
// C-api: name=CreateCB
SoFieldSensor(SoSensorCB *func, void *data);
// Destructor
virtual ~SoFieldSensor();
// Attaches the sensor to the given field. Will not attach if the
// field is not contained in a node or function.
void attach(SoField *field);
// Detaches the sensor if it is attached to a field
void detach();
// Returns the field to which the sensor is attached, or NULL if it
// is not attached.
SoField * getAttachedField() const { return field; }
SoINTERNAL public:
// Override trigger to evaluate the field we're connected to, just
// in case the trigger method doesn't get the value.
virtual void trigger();
private:
SoField * field; // Field sensor is attached to
// Propagates modification notification through an instance. This
// checks to see if the field that triggered notification matches
// the field we are attached to. (It also checks indices if necessary.)
virtual void notify(SoNotList *list);
// Called by the attached path when it (the path) is about to be deleted
virtual void dyingReference();
};
#endif /* _SO_FIELD_SENSOR_ */
|
