include/root/TGLOverlay.h

0001 // @(#)root/gl:$Id$
0002 // Author:  Matevz Tadel, Feb 2007
0003
0004 /*************************************************************************
0005  * Copyright (C) 1995-2004, Rene Brun and Fons Rademakers.               *
0006  * All rights reserved.                                                  *
0007  *                                                                       *
0008  * For the licensing terms see $ROOTSYS/LICENSE.                         *
0009  * For the list of contributors see $ROOTSYS/README/CREDITS.             *
0010  *************************************************************************/
0011
0012 #ifndef ROOT_TGLOverlay_H
0013 #define ROOT_TGLOverlay_H
0014
0015 #include <GuiTypes.h>
0016
0017 class TGLRnrCtx;
0018 class TGLOvlSelectRecord;
0019
0020 #include <list>
0021
0022 class TGLOverlayElement
0023 {
0024 public:
0025    enum ERole  { kUser, kViewer, kAnnotation, kAll };
0026
0027    enum EState { kInvisible = 1, kDisabled = 2, kActive = 4,
0028                  kAllVisible = kDisabled | kActive };
0029
0030 private:
0031    TGLOverlayElement(const TGLOverlayElement&) = delete;
0032    TGLOverlayElement& operator=(const TGLOverlayElement&) = delete;
0033
0034 protected:
0035    ERole   fRole;
0036    EState  fState;
0037
0038    void ProjectionMatrixPushIdentity();
0039
0040 public:
0041    TGLOverlayElement(ERole r=kUser, EState s=kActive) :
0042       fRole(r), fState(s) {}
0043    virtual ~TGLOverlayElement() {}
0044
0045    virtual Bool_t MouseEnter(TGLOvlSelectRecord& selRec);
0046    virtual Bool_t MouseStillInside(TGLOvlSelectRecord& selRec);
0047    virtual Bool_t Handle(TGLRnrCtx& rnrCtx, TGLOvlSelectRecord& selRec,
0048                          Event_t* event);
0049    virtual void   MouseLeave();
0050
0051    virtual void Render(TGLRnrCtx& rnrCtx) = 0;
0052
0053    ERole   GetRole() const  { return fRole; }
0054    void    SetRole(ERole r) { fRole = r; }
0055
0056    EState  GetState() const   { return fState; }
0057    void    SetState(EState s) { fState = s; }
0058
0059    void    SetBinaryState(Bool_t s) { SetState(s ? kActive : kInvisible); }
0060
0061    ClassDef(TGLOverlayElement, 0) // Base class for GL overlay elements.
0062 };
0063
0064
0065 class TGLOverlayList
0066 {
0067 private:
0068    TGLOverlayList(const TGLOverlayList&) = delete;
0069    TGLOverlayList& operator=(const TGLOverlayList&) = delete;
0070
0071 protected:
0072    std::list<TGLOverlayElement*> fElements;
0073
0074 public:
0075    TGLOverlayList() : fElements() {}
0076    virtual ~TGLOverlayList() {}
0077
0078    // void AddElement(TGLOverlayElement* element);
0079    // void RemoveElement(TGLOverlayElement* element);
0080
0081    // TGLOverlayElement* SelectElement(TGLSelectRecord& selRec, Int_t nameOff);
0082
0083    ClassDef(TGLOverlayList, 0) // Collection of overlay elements to draw/select together.
0084 };
0085
0086
0087 #endif