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//$Id$
#include "timer.h"
Timer_imp::Timer_imp (XtAppContext &app,
CORBA::Long interval,
Stopwatch_display *stopwatch)
:stopwatch_ (stopwatch),
counter_ (0),
interval_ (interval),
id_ (0),
app_ (app)
{
}
void
Timer_imp::start (void)
{
// Reset the elapsed time
this->counter_ = 0;
// If a previous callback is still in effect, remove it
if (this->id_)
{
XtRemoveTimeOut (this->id_);
this->id_ = 0;
}
// Register a function to be called in interval_ milliseconds
this->id_ = XtAppAddTimeOut (this->app_,
this->interval_,
&Timer_imp::tick_callback,
(XtPointer) this );
}
void
Timer_imp::stop (void)
{
// Remove the current timeout function, if any
if (this->id_)
XtRemoveTimeOut (this->id_);
this->id_ = 0;
}
CORBA::Float
Timer_imp::elapsed_time(void)
{
return ((CORBA::Float) counter_ * interval_ / 1000.0 );
}
void
Timer_imp::tick_callback (XtPointer client_data,
XtIntervalId * )
{
// Get the object pointer and call the corresponding tick function
Timer_imp *obj = static_cast<Timer_imp *> (client_data);
obj->tick ();
}
void
Timer_imp::tick (void)
{
// Increment a counter for each tick
counter_++;
// Call derived class function to report time
this->report_time (this->elapsed_time ());
// Reinstall the timeout callback
this->id_ = XtAppAddTimeOut (app_,
interval_,
&Timer_imp::tick_callback,
(XtPointer) this);
}
void
Timer_imp::report_time (CORBA::Float time)
{
stopwatch_->set_time (time);
}
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