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#include <bu/signals.h>
#include <bu/sio.h>
#include <bu/randomcmwc.h>
#include <time.h>
template<typename ret>
class SignalCallable
{
public:
SignalCallable()
{
}
virtual ~SignalCallable()
{
}
virtual ret call()=0;
};
template<typename ret>
class SignalCall0 : public SignalCallable<ret>
{
public:
SignalCall0( const Bu::Signal0<ret> &sRef ) :
sRef( sRef )
{
}
virtual ~SignalCall0()
{
}
virtual ret call()
{
return sRef();
}
private:
Bu::Signal0<ret> sRef;
};
template<typename ret, typename p1t>
class SignalCall1 : public SignalCallable<ret>
{
public:
SignalCall1( const Bu::Signal1<ret, p1t> &sRef, const p1t &p1 ) :
sRef( sRef ), p1( p1 )
{
}
virtual ~SignalCall1()
{
}
virtual ret call()
{
return sRef( p1 );
}
private:
Bu::Signal1<ret, p1t> sRef;
p1t p1;
};
template<typename ret, typename p1t, typename p2t>
class SignalCall2 : public SignalCallable<ret>
{
public:
SignalCall2( const Bu::Signal2<ret, p1t, p2t> &sRef, const p1t &p1, const p2t &p2 ) :
sRef( sRef ), p1( p1 ), p2( p2 )
{
}
virtual ~SignalCall2()
{
}
virtual ret call()
{
return sRef( p1, p2 );
}
private:
Bu::Signal2<ret, p1t, p2t> sRef;
p1t p1;
p2t p2;
};
template<typename ret, typename p1t, typename p2t>
class DeferredSignal2 : public Bu::Signal2<ret, p1t, p2t>
{
typedef Bu::Signal2<ret, p1t, p2t> Parent;
public:
DeferredSignal2() : Parent() { }
DeferredSignal2( Bu::_Slot2<ret, p1t, p2t> *pCb ) : Parent( pCb ) { }
DeferredSignal2( const DeferredSignal2<ret, p1t, p2t> &rSrc ) :
Parent( (const Parent &)rSrc ) { }
virtual ~DeferredSignal2() { }
void operator()( p1t p1, p2t p2 )
{
lCalls.enqueue( SignalCall2<ret, p1t, p2t>( (Parent &)*this, p1, p2 ) );
}
DeferredSignal2<ret, p1t, p2t> &operator=( const Bu::Signal2<ret, p1t, p2t> &rhs )
{
((Parent &)*this) = rhs;
return *this;
}
bool operator==( const Bu::Signal2<ret, p1t, p2t> &rhs ) const
{
return ((Parent &)*this) == rhs;
}
bool hasNext() const
{
return !lCalls.isEmpty();
}
ret callNext()
{
return lCalls.dequeue().call();
}
private:
Bu::List< SignalCall2<ret, p1t, p2t> > lCalls;
};
//
// Slots
//
int area( int x, int y )
{
return x*y;
}
int diff( int x, int y )
{
return x-y;
}
int thing( int x, int y )
{
return x*x-y*y;
}
int square( int x )
{
return x*x;
}
int rand()
{
Bu::RandomCmwc c;
c.seed( time( NULL ) );
return c.rand();
}
int main()
{
// Direct use of SignalCall objects
Bu::println("Testing SignalCall classes:");
typedef Bu::List<SignalCallable<int> * > CallList;
CallList calls;
calls.append( new SignalCall2<int, int, int>( Bu::slot(&area), 5, 10 ) );
calls.append( new SignalCall2<int, int, int>( Bu::slot(&diff), 5, 15 ) );
calls.append( new SignalCall2<int, int, int>( Bu::slot(&thing), 10, 5 ) );
calls.append( new SignalCall1<int, int>( Bu::slot(&square), 12 ) );
calls.append( new SignalCall0<int>( Bu::slot(&rand)) );
for( CallList::iterator i = calls.begin(); i; i++ )
{
Bu::println(" - Result: %1").arg( (*i)->call() );
}
// Deferred Signals:
Bu::println("");
Bu::println("Testing DeferredSignals:");
DeferredSignal2<int, int, int> sigArea;
sigArea = Bu::slot(&area);
sigArea( 5, 5 );
sigArea( 10, 10 );
sigArea( 15, 15 );
while( sigArea.hasNext() )
{
Bu::println(" - Result: %1").arg( sigArea.callNext() );
}
return 0;
}
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