libs/gtkmm2ext/idle_adjustment.cc

   1 #define _BSD_SOURCE
   2 #include <gtkmm2ext/idle_adjustment.h>
   3 #include <gtkmm/main.h>
   4 #include <iostream>
   5
   6 using namespace Gtk;
   7 using namespace sigc;
   8 using namespace Gtkmm2ext;
   9
  10 IdleAdjustment::IdleAdjustment (Gtk::Adjustment& adj)
  11 {
  12         adj.signal_value_changed().connect (mem_fun (*this, &IdleAdjustment::underlying_adjustment_value_changed));
  13         timeout_queued = 0;
  14         gettimeofday (&last_vc, 0);
  15 }
  16
  17 IdleAdjustment::~IdleAdjustment ()
  18 {
  19 }
  20
  21 void
  22 IdleAdjustment::underlying_adjustment_value_changed ()
  23 {
  24         gettimeofday (&last_vc, 0);
  25
  26         if (timeout_queued) {
  27                 return;
  28         }
  29
  30         Glib::signal_timeout().connect(mem_fun(*this, &IdleAdjustment::timeout_handler), 250);
  31         timeout_queued = true;
  32 }
  33
  34 gint
  35 IdleAdjustment::timeout_handler ()
  36 {
  37         struct timeval now;
  38         struct timeval tdiff;
  39
  40         gettimeofday (&now, 0);
  41
  42         timersub (&now, &last_vc, &tdiff);
  43
  44         std::cerr << "timer elapsed, diff = " << tdiff.tv_sec << " + " << tdiff.tv_usec << std::endl;
  45
  46         if (tdiff.tv_sec > 0 || tdiff.tv_usec > 250000) {
  47                 std::cerr << "send signal\n";
  48                 value_changed ();
  49                 timeout_queued = false;
  50                 return FALSE;
  51         } else {
  52                 return TRUE;
  53         }
  54 }