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/*
Copyright (C) 2013 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <iostream>
#include <gtkmm/window.h>
#include "gtkmm2ext/visibility_tracker.h"
using namespace Gtkmm2ext;
VisibilityTracker::VisibilityTracker (Gtk::Window& win)
: _window (win)
, _visibility (GdkVisibilityState (0))
{
_window.add_events (Gdk::VISIBILITY_NOTIFY_MASK);
_window.signal_visibility_notify_event().connect (sigc::mem_fun (*this, &VisibilityTracker::handle_visibility_notify_event));
}
bool
VisibilityTracker::handle_visibility_notify_event (GdkEventVisibility* ev)
{
_visibility = ev->state;
// std::cerr << "VT: " << _window.get_title() << " vis event, fv = " << fully_visible() << " pv = " << partially_visible() << " nv = " << not_visible() << std::endl;
return false;
}
void
VisibilityTracker::cycle_visibility ()
{
if (fully_visible ()) {
_window.hide ();
} else {
_window.present ();
}
}
bool
VisibilityTracker::fully_visible () const
{
return _window.is_mapped() && (_visibility == GDK_VISIBILITY_UNOBSCURED);
}
bool
VisibilityTracker::not_visible () const
{
return !_window.is_mapped() || (_visibility == GDK_VISIBILITY_FULLY_OBSCURED);
}
bool
VisibilityTracker::partially_visible () const
{
return _window.is_mapped() && ((_visibility == GDK_VISIBILITY_PARTIAL) || (_visibility == GDK_VISIBILITY_UNOBSCURED));
}
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