// @(#)root/gui:$Id: TGDNDManager.h 23115 2008-04-10 13:35:37Z rdm $ // Author: Bertrand Bellenot 19/04/07 /************************************************************************* * Copyright (C) 1995-2007, Rene Brun and Fons Rademakers. * * All rights reserved. * * * * For the licensing terms see $ROOTSYS/LICENSE. * * For the list of contributors see $ROOTSYS/README/CREDITS. * *************************************************************************/ #ifndef ROOT_TDNDManager #define ROOT_TDNDManager #ifndef ROOT_TGFrame #include "TGFrame.h" #endif class TGMainFrame; class TGDragWindow; class TTimer; //---------------------------------------------------------------------- class TGDragWindow : public TGFrame { protected: static Cursor_t fgDefaultCursor; // Default Cursor protected: virtual void DoRedraw(); Window_t fInput; // Input Window Pixmap_t fPic, fMask; // Pixmaps used as Window shape UInt_t fPw, fPh; // Hot point coordinates (x and y) public: TGDragWindow(const TGWindow *p, Pixmap_t pic, Pixmap_t mask, UInt_t options = kChildFrame, Pixel_t back = GetWhitePixel()); virtual ~TGDragWindow(); virtual TGDimension GetDefaultSize() const { return TGDimension(fPw, fPh); } virtual void MapWindow(); virtual void UnmapWindow(); virtual void RaiseWindow(); virtual void LowerWindow(); virtual void MapRaised(); virtual void Layout(); Window_t GetInputId() const { return fInput; } Bool_t HasWindow(Window_t w) const { return (w == fId || w == fInput); } ClassDef(TGDragWindow, 0) // Window used for dragging }; //---------------------------------------------------------------------- //_____________________________________________________________________________ // // TDNDData // // Drag and drop data container. //_____________________________________________________________________________ class TDNDData : public TObject { private: TDNDData(const TDNDData&); // Not implemented TDNDData& operator=(const TDNDData&); // Not implemented public: TDNDData(Atom_t dt = kNone, void *d = 0, Int_t len = 0, Atom_t act = kNone) : fDataType(dt), fAction(act), fData(d), fDataLength(len) {} ~TDNDData() {} Atom_t fDataType; // Data type description Atom_t fAction; // Action description void *fData; // Actual data Int_t fDataLength; // Length of data ClassDef(TDNDData, 0) // Drag and drop specific data }; //---------------------------------------------------------------------- class TGDNDManager : public TObject { private: TGDNDManager(const TGDNDManager&); // Not implemented TGDNDManager& operator=(const TGDNDManager&); // Not implemented protected: TGFrame *fMain; // pointer on TGMainFrame Atom_t fVersion; // not really an Atom, but a long Atom_t *fTypelist, *fDraggerTypes; // lists of DND types Atom_t fDropType; // drop type Atom_t fAcceptedAction, fLocalAction; // accepted and local actions Bool_t fDragging; // kTRUE while dragging Bool_t fDropAccepted; // kTRUE if drop accepted Bool_t fStatusPending; // kTRUE if status is pending Bool_t fUseVersion; // kTRUE if DND version is used Bool_t fProxyOurs; // kTRUE if root proxy is ours Window_t fSource, fTarget; // source and target windows Bool_t fTargetIsDNDAware; // kTRUE if target is DND aware UInt_t fGrabEventMask; // pointer grab event mask TGFrame *fLocalSource, *fLocalTarget; // local source and target TTimer *fDropTimeout; // drop timeout TGDragWindow *fDragWin; // drag window Pixmap_t fPic, fMask; // pixmap used for the drag window Int_t fHotx, fHoty; // hot point coordinates Cursor_t fDNDNoDropCursor; // no drop cursor type protected: static Atom_t fgDNDAware, fgDNDSelection, fgDNDProxy; static Atom_t fgDNDEnter, fgDNDLeave, fgDNDPosition, fgDNDStatus; static Atom_t fgDNDDrop, fgDNDFinished; static Atom_t fgDNDVersion; static Atom_t fgDNDActionCopy, fgDNDActionMove, fgDNDActionLink; static Atom_t fgDNDActionAsk, fgDNDActionPrivate; static Atom_t fgDNDTypeList, fgDNDActionList, fgDNDActionDescrip; static Atom_t fgXCDNDData; static Bool_t fgInit; static Atom_t fgXAWMState; protected: void InitAtoms(); Window_t GetRootProxy(); Window_t FindWindow(Window_t root, Int_t x, Int_t y, Int_t maxd); Bool_t IsDNDAware(Window_t win, Atom_t *typelist = 0); Bool_t IsTopLevel(Window_t win); void SendDNDEnter(Window_t target); void SendDNDLeave(Window_t target); void SendDNDPosition(Window_t target, int x, int y, Atom_t action, Time_t timestamp); void SendDNDStatus(Window_t target, Atom_t action); void SendDNDDrop(Window_t target); void SendDNDFinished(Window_t src); Bool_t HandleDNDEnter(Window_t src, long vers, Atom_t dataTypes[3]); Bool_t HandleDNDLeave(Window_t src); Bool_t HandleDNDPosition(Window_t src, int x_root, int y_root, Atom_t action, Time_t timestamp); Bool_t HandleDNDStatus(Window_t from, int accepted, Rectangle_t skip, Atom_t action); Bool_t HandleDNDDrop(Window_t src, Time_t timestamp); Bool_t HandleDNDFinished(Window_t target); public: TGDNDManager(TGFrame *toplevel, Atom_t *typelist); virtual ~TGDNDManager(); Bool_t HandleClientMessage(Event_t *event); Bool_t HandleSelectionRequest(Event_t *event); Bool_t HandleSelection(Event_t *event); Bool_t HandleTimer(TTimer *t); //--- called by widgets TGFrame *GetMainFrame() const { return fMain; } void SetMainFrame(TGFrame *main) { fMain = main; } void SetDragPixmap(Pixmap_t pic, Pixmap_t mask, Int_t hot_x, Int_t hot_y); Bool_t SetRootProxy(); Bool_t RemoveRootProxy(); Bool_t StartDrag(TGFrame *src, Int_t x_root, Int_t y_root, Window_t grabWin = kNone); Bool_t Drag(Int_t x_root, Int_t y_root, Atom_t action, Time_t timestamp); Bool_t Drop(); Bool_t EndDrag(); Bool_t IsDragging() const { return fDragging; } Window_t GetSource() const { return fSource; } Window_t GetTarget() const { return fTarget; } Atom_t *GetTypeList() const { return fTypelist; } static Atom_t GetDNDAware(); static Atom_t GetDNDSelection(); static Atom_t GetDNDProxy(); static Atom_t GetDNDEnter(); static Atom_t GetDNDLeave(); static Atom_t GetDNDPosition(); static Atom_t GetDNDStatus(); static Atom_t GetDNDDrop(); static Atom_t GetDNDFinished(); static Atom_t GetDNDVersion(); static Atom_t GetDNDActionCopy(); static Atom_t GetDNDActionMove(); static Atom_t GetDNDActionLink(); static Atom_t GetDNDActionAsk(); static Atom_t GetDNDActionPrivate(); static Atom_t GetDNDTypeList(); static Atom_t GetDNDActionList(); static Atom_t GetDNDActionDescrip(); static Atom_t GetXCDNDData(); ClassDef(TGDNDManager, 0) // The main Drag and Drop Manager }; R__EXTERN TGDNDManager *gDNDManager; // global drag and drop manager #endif // ROOT_TDNDManager