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RQ_OBJECT.h
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// @(#)root/base:$Id$
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// Author: Valeriy Onuchin & Fons Rademakers 15/10/2000
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/*************************************************************************
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* Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
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* All rights reserved. *
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* *
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* For the licensing terms see $ROOTSYS/LICENSE. *
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* For the list of contributors see $ROOTSYS/README/CREDITS. *
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*************************************************************************/
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#ifndef ROOT_RQ_OBJECT
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#define ROOT_RQ_OBJECT
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#include <
TQObject.h
>
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#include <
Varargs.h
>
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//---- RQ_OBJECT macro -----------------------------------------------
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//
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// Macro is used to delegate TQObject methods to other classes
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// Example:
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//
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// #include "RQ_OBJECT.h"
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//
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// class A {
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// RQ_OBJECT("A")
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// private:
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// Int_t fValue;
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// public:
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// A() : fValue(0) { }
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// ~A() { }
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//
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// void SetValue(Int_t value)
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// void PrintValue() const { printf("value=%d\n", fValue); }
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// Int_t GetValue() const { return fValue; }
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// };
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//
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// void A::SetValue(Int_t value)
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// {
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// // Sets new value
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//
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// // to prevent infinite looping in the case
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// // of cyclic connections
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// if (value != fValue) {
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// fValue = value;
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// Emit("SetValue(Int_t)", fValue);
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// }
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// }
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//
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// Load this class into root session and try the following:
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//
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// a = new A();
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// b = new A();
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//
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// Here is one way to connect two of these objects together:
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//
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// a->Connect("SetValue(Int_t)", "A", b, "SetValue(Int_t)");
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//
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// Calling a->SetValue(79) will make a emit a signal, which b
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// will receive, i.e. b->SetValue(79) is invoked. b will in
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// turn emit the same signal, which nobody receives, since no
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// slot has been connected to it, so it disappears into hyperspace.
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//
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#define RQ_OBJECT1(sender_class)\
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private:\
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TQObjSender fQObject;\
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public:\
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TList *GetListOfSignals() const {return fQObject.GetListOfSignals();}\
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Bool_t Connect(const char *sig,const char *cl,void *rcvr,const char *slt)\
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{fQObject.SetSender(this);fQObject.SetSenderClassName(sender_class);return fQObject.Connect(sig,cl,rcvr,slt);}\
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Bool_t Disconnect(const char *sig=nullptr,void *rcvr=nullptr,const char *slt=nullptr){return fQObject.Disconnect(sig,rcvr,slt);}\
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void HighPriority(const char *signal_name,const char *slot_name=nullptr){fQObject.HighPriority(signal_name,slot_name);}\
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void LowPriority(const char *signal_name,const char *slot_name=nullptr){fQObject.LowPriority(signal_name,slot_name);}\
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template <typename... T> void EmitVA(const char *signal_name, Int_t nargs, const T&... params) \
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{ fQObject.EmitVA(signal_name,nargs,params...); } \
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void Emit(const char *signal){EmitVA(signal,
/*nargs*/
0);} \
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template <typename T> void Emit(const char *signal, const T& arg) { EmitVA(signal,
/*nargs*/
1, arg); } \
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#define RQ_OBJECT2(sender_class)\
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void Destroyed(){Emit("Destroyed()"
);}\
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void ChangedBy(const char *method){Emit("ChangedBy(char*)",method);}\
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void Message(const char *msg){Emit("Message(char*)",msg);}\
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private:
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#define RQ_OBJECT(sender_class)\
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RQ_OBJECT1(sender_class)\
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RQ_OBJECT2(sender_class)
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#endif
TQObject.h
Varargs.h
core
base
inc
RQ_OBJECT.h
ROOT master - Reference Guide Generated on Fri Sep 27 2024 11:59:53 (GVA Time) using Doxygen 1.9.8