visevent.h

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#pragma once

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Kristofer Tingdahl
 Date:          4-11-2002
________________________________________________________________________


-*/

#include "visdata.h"
#include "visosg.h"
#include "keyenum.h"
#include "position.h"
#include "trigonometry.h"

class TabletInfo;

namespace osg { class Node; }


namespace visBase
{

class EventCatchHandler;
class Detail;


enum EventType          { Any=7, MouseClick=1, Keyboard=2, MouseMovement=4,
                          MouseDoubleClick=5 };

mExpClass(visBase) EventInfo
{
public:
                                EventInfo();
                                EventInfo(const EventInfo&);

                                ~EventInfo();
    EventInfo&                  operator=(const EventInfo&);

    EventType                   type;

    OD::ButtonState             buttonstate_;

    Coord                       mousepos;

    Line3                       mouseline;
    double                      pickdepth;

    bool                        pressed;
    bool                        dragging;

    OD::KeyboardKey             key_;

    TypeSet<int>                pickedobjids;

    Coord3                      displaypickedpos;       // display space
    Coord3                      localpickedpos; // object space
    Coord3                      worldpickedpos; // world space

    TabletInfo*                 tabletinfo;
    void                        setTabletInfo(const TabletInfo*);
};


mExpClass(visBase) EventCatcher : public DataObject
{
    friend class EventCatchHandler;

public:

    static EventCatcher*        create()
                                mCreateDataObj(EventCatcher);

    void                        setEventType( int type );
    int                         eventType() const { return type_; }

    void                        releaseEventsPostOsg( bool yn );
    CNotifier<EventCatcher, const EventInfo&>           eventhappened;
    CNotifier<EventCatcher, const EventInfo&>           nothandled;

    bool                        isHandled() const;
    void                        setHandled();
    void                        reHandle(const EventInfo&);

    void                        setUtm2Display(ObjectSet<Transformation>&);

protected:
                                ~EventCatcher();

    void                        releaseEventsCB(CallBacker*);

    int                         type_;
    ObjectSet<Transformation>   utm2display_;

    static const char*          eventtypestr();

    bool                        ishandled_;
    bool                        rehandling_;
    bool                        rehandled_;

    osg::Node*                  osgnode_;
    EventCatchHandler*          eventcatchhandler_;

    ObjectSet<EventInfo>        eventqueue_;
    Threads::Lock               eventqueuelock_;
    bool                        eventreleasepostosg_;
};

}; // Namespace