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