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examples/testdnd.pl  view on Meta::CPAN

  
  $context->finish (0, 0, $time);
}

sub source_drag_data_get {
  my ($widget, $context, $data, $info, $time) = @_;
  if ($info == TARGET_ROOTWIN) {
    print ("I was dropped on the rootwin\n");
  } else {
	  print "\$data is $data\n";
    $data->set ($data->target, 8, "I'm Data!");
  }
}
  
#/* The following is a rather elaborate example demonstrating/testing
# * changing of the window heirarchy during a drag - in this case,
# * via a "spring-loaded" popup window.
# */
$popup_window = undef;

$popped_up = 0;
$in_popup = 0;
$popdown_timer = 0;
$popup_timer = 0;

sub popdown_cb
{
  $popdown_timer = 0;

  $popup_window->hide();
  $popped_up = 0;

  return 0;
}

sub popup_motion
{
  my ($widget, $context, $x, $y, $time) = @_;
  if (!$in_popup)
    {
      $in_popup = 1;
      if ($popdown_timer)
	{
	  print ("removed popdown\n");
	  Glib::Source->remove ($popdown_timer);
	  $popdown_timer = 0;
	}
    }

  return 1;
}

sub  popup_leave {
  my ($widget, $context, $time) = @_;
  if ($in_popup)
    {
      $in_popup = 0;
      if ($popdown_timer)
	{
	  print ("added popdown\n");
	  $popdown_timer = Gtk2::Timeout->add (500, \&popdown_cb);
	}
    }
}

sub popup_cb {
  if (!$popped_up)
    {
      if (!$popup_window)
	{
	  my ($button, $table, $i, $j);
	  
	  $popup_window = Gtk2::Window->new ('popup');
	  $popup_window->set_position('mouse');

	  $table = Gtk2::Table->new (3, 3, 0);

	  for ($i=0; $i<3; $i++) {
	    for ($j=0; $j<3; $j++)
	      {
		$button = new Gtk2::Button ("$i,$j");
		$table->attach ($button, $i, $i+1, $j, $j+1,
				  ['expand','fill'],['expand','fill'], 0, 0);

		$button->drag_dest_set ('all', ['copy', 'move'],
			@target_table[0..1]); # no rootwin
		$button->signal_connect ("drag_motion", \&popup_motion);
		$button->signal_connect ("drag_leave", \&popup_leave);
	      }
	  }
	  $table->show_all ();
	  $popup_window->add($table);

	}
      $popup_window->show;
      $popped_up = 1;
    }

  $popdown_timer = Glib::Timeout->add (500, \&popdown_cb);
  print ("added popdown\n");

  $popup_timer = 0;

  return 0;
}

sub popsite_motion {
  my ($widget, $context, $x, $y, $time) = @_;
  if (!$popup_timer) {
    $popup_timer = Glib::Timeout->add (500, \&popup_cb);
  }
  return 1;
}

sub  popsite_leave {
  my ($widget, $context, $time) = @_;
  if ($popup_timer)
    {
      Glib::Source->remove ($popup_timer);
      $popup_timer = 0;
    }
}

sub source_drag_data_delete {
  my ($widget, $context, $data) = @_;
  print ("Delete the data!\n");
}
  
init Gtk2;

$window = new Gtk2::Window;
$window->signal_connect('destroy', sub {Gtk2->main_quit});

$table = new Gtk2::Table(2, 2, 0);

$window->add($table);

($drag_icon, $drag_mask) = Gtk2::Gdk::Pixmap->colormap_create_from_xpm_d (
	undef, $window->get_colormap(), undef, @drag_icon_xpm);
($trashcan_open, $trashcan_open_mask) = Gtk2::Gdk::Pixmap->colormap_create_from_xpm_d (
	undef, $window->get_colormap(), undef, @trashcan_open_xpm);
($trashcan_closed, $trashcan_closed_mask) = Gtk2::Gdk::Pixmap->colormap_create_from_xpm_d (
	undef, $window->get_colormap(), undef, @trashcan_closed_xpm);

$label = new Gtk2::Label("Drop Here\n");

$label->drag_dest_set('all', ['copy', 'move'], @target_table[0..1]); # no rootwin

$label->signal_connect("drag_data_received", \&label_drag_data_received);

$table->attach ($label, 0, 1, 0, 1, ['expand', 'fill'], ['expand', 'fill'], 0, 0);

$label = new Gtk2::Label("Popup\n");

$label->drag_dest_set('all', ['copy', 'move'], @target_table[0..1]); # no rootwin

$table->attach ($label, 1, 2, 1, 2, ['expand', 'fill'], ['expand', 'fill'], 0, 0);

$label->signal_connect ("drag_motion", \&popsite_motion);
$label->signal_connect ("drag_leave", \&popsite_leave);
  
$pixmap = Gtk2::Image->new_from_pixmap ($trashcan_closed, $trashcan_closed_mask);
$pixmap->drag_dest_set ([], []);
$table->attach ($pixmap, 1, 2, 0, 1, ['expand', 'fill'], ['expand', 'fill'], 0, 0);

$pixmap->signal_connect ("drag_leave", \&target_drag_leave);

$pixmap->signal_connect ("drag_motion", \&target_drag_motion);

$pixmap->signal_connect ("drag_drop", \&target_drag_drop);