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Sourcecode: ardour version File versions

idle_adjustment.cc

#define _BSD_SOURCE
#include <gtkmmext/idle_adjustment.h>
#include <gtk--/main.h>
#include <iostream>

using namespace Gtk;
using namespace SigC;
using namespace Gtkmmext;

IdleAdjustment::IdleAdjustment (Gtk::Adjustment& adj)
{
      adj.value_changed.connect (slot (*this, &IdleAdjustment::underlying_adjustment_value_changed));
      timeout_queued = 0;
      gettimeofday (&last_vc, 0);
}

IdleAdjustment::~IdleAdjustment ()
{
}

void
IdleAdjustment::underlying_adjustment_value_changed ()
{
      gettimeofday (&last_vc, 0);
      
      if (timeout_queued) {
            return;
      }

      TimeoutSig t;
      t.connect (slot (*this, &IdleAdjustment::timeout_handler), 250);
      timeout_queued = true;
}     

gint
IdleAdjustment::timeout_handler ()
{
      struct timeval now;
      struct timeval tdiff;

      gettimeofday (&now, 0);

      timersub (&now, &last_vc, &tdiff);

      std::cerr << "timer elapsed, diff = " << tdiff.tv_sec << " + " << tdiff.tv_usec << std::endl;

      if (tdiff.tv_sec > 0 || tdiff.tv_usec > 250000) {
            std::cerr << "send signal\n";
            value_changed ();
            timeout_queued = false;
            return FALSE;
      } else {
            return TRUE;
      }
}

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