00001 /*======================================================================= 00002 * Copyright 1991-1996, Silicon Graphics, Inc. 00003 * ALL RIGHTS RESERVED 00004 * 00005 * UNPUBLISHED -- Rights reserved under the copyright laws of the United 00006 * States. Use of a copyright notice is precautionary only and does not 00007 * imply publication or disclosure. 00008 * 00009 * U.S. GOVERNMENT RESTRICTED RIGHTS LEGEND: 00010 * Use, duplication or disclosure by the Government is subject to restrictions 00011 * as set forth in FAR 52.227.19(c)(2) or subparagraph (c)(1)(ii) of the Rights 00012 * in Technical Data and Computer Software clause at DFARS 252.227-7013 and/or 00013 * in similar or successor clauses in the FAR, or the DOD or NASA FAR 00014 * Supplement. Contractor/manufacturer is Silicon Graphics, Inc., 00015 * 2011 N. Shoreline Blvd. Mountain View, CA 94039-7311. 00016 * 00017 * THE CONTENT OF THIS WORK CONTAINS CONFIDENTIAL AND PROPRIETARY 00018 * INFORMATION OF SILICON GRAPHICS, INC. ANY DUPLICATION, MODIFICATION, 00019 * DISTRIBUTION, OR DISCLOSURE IN ANY FORM, IN WHOLE, OR IN PART, IS STRICTLY 00020 * PROHIBITED WITHOUT THE PRIOR EXPRESS WRITTEN PERMISSION OF SILICON 00021 * GRAPHICS, INC. 00022 **=======================================================================*/ 00023 /*======================================================================= 00024 ** Author : Paul S. Strauss (MMM yyyy) 00025 **=======================================================================*/ 00026 /*======================================================================= 00027 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.), *** 00028 *** AND IS DISTRIBUTED UNDER A LICENSE AGREEMENT. *** 00029 *** *** 00030 *** REPRODUCTION, DISCLOSURE, OR USE, IN WHOLE OR IN PART, OTHER THAN AS *** 00031 *** SPECIFIED IN THE LICENSE ARE NOT TO BE UNDERTAKEN EXCEPT WITH PRIOR *** 00032 *** WRITTEN AUTHORIZATION OF FEI S.A.S. *** 00033 *** *** 00034 *** RESTRICTED RIGHTS LEGEND *** 00035 *** USE, DUPLICATION, OR DISCLOSURE BY THE GOVERNMENT OF THE CONTENT OF THIS *** 00036 *** WORK OR RELATED DOCUMENTATION IS SUBJECT TO RESTRICTIONS AS SET FORTH IN *** 00037 *** SUBPARAGRAPH (C)(1) OF THE COMMERCIAL COMPUTER SOFTWARE RESTRICTED RIGHT *** 00038 *** CLAUSE AT FAR 52.227-19 OR SUBPARAGRAPH (C)(1)(II) OF THE RIGHTS IN *** 00039 *** TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 52.227-7013. *** 00040 *** *** 00041 *** COPYRIGHT (C) 1996-2020 BY FEI S.A.S, *** 00042 *** BORDEAUX, FRANCE *** 00043 *** ALL RIGHTS RESERVED *** 00044 **=======================================================================*/ 00045 /*======================================================================= 00046 ** Modified by : VSG (MMM YYYY) 00047 **=======================================================================*/ 00048 00049 00050 #ifndef _SO_HANDLE_EVENT_ACTION_ 00051 #define _SO_HANDLE_EVENT_ACTION_ 00052 00053 #include <Inventor/SbViewportRegion.h> 00054 #include <Inventor/actions/SoSubAction.h> 00055 #include <Inventor/actions/SoRayPickAction.h> 00056 00057 class SoEvent; 00058 class SoPickedPoint; 00059 00061 // 00062 // Class: SoHandleEventAction 00063 // 00064 // Event handling action. This traverses a graph looking for a node 00065 // or nodes interested in a particular event. 00066 // 00068 00118 class SoHandleEventAction : public SoAction { 00119 00120 SO_ACTION_HEADER(SoHandleEventAction); 00121 00122 public: 00127 SoHandleEventAction(const SbViewportRegion &viewportRegion); 00128 00129 // Destructor 00130 #ifndef HIDDEN_FROM_DOC 00131 virtual ~SoHandleEventAction(); 00132 #endif // HIDDEN_FROM_DOC 00133 00137 void setViewportRegion(const SbViewportRegion &newRegion); 00138 00139 00143 const SbViewportRegion &getViewportRegion() const { return vpRegion; } 00144 00146 virtual void clearApplyResult(); 00147 00151 void setEvent(const SoEvent *ev) { event = ev; } 00155 const SoEvent * getEvent() const { return event; } 00156 00160 void setHandled() { setTerminated(TRUE); } 00164 SbBool isHandled() const { return hasTerminated(); } 00165 00170 void setGrabber(SoNode *node); 00174 void releaseGrabber() { setGrabber(NULL); } 00178 SoNode * getGrabber() const { return eventGrabber; } 00179 00184 void setPickRoot(SoNode *node); 00189 SoNode * getPickRoot() const { return pickRoot; } 00190 00200 void setPickRadius(float radiusInPixels) 00201 { pickAct->setRadius(radiusInPixels); } 00202 00207 float getPickRadius() const 00208 { return pickAct->getRadius(); } 00209 00219 void enableRadiusForTriangles(SbBool flag); 00220 00234 const SoPickedPoint *getPickedPoint(); 00235 00240 const SoPickedPointList &getPickedPointList(); 00241 00242 private: 00250 void setPickedPoint( SoPickedPoint *point = NULL ); 00251 00252 private: 00253 static void initClass(); 00254 static void exitClass(); 00255 00256 private: 00257 // Initiates action on graph 00258 virtual void beginTraversal(SoNode *node); 00259 00260 private: 00261 const SoEvent *event; // Event being handled 00262 SoNode *pickRoot; // Root node for initiating picking 00263 SoPickedPoint *pickedPoint; // PickedPoint from last pick 00264 SbBool pickValid; // Whether last pick is still valid 00265 SbBool usedPickAll; // TRUE if last pick used pickAll=TRUE 00266 SoRayPickAction *pickAct; // Pick action 00267 SoNode *eventGrabber; // Event grabber - gets all events 00268 SbViewportRegion vpRegion; // Current viewport region 00269 SbBool pickedPtSet; // TRUE if picked pt was set by app 00270 00271 }; 00272 00273 #endif /* _SO_HANDLE_EVENT_ACTION_ */ 00274 00275