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/*
Copyright (c) 2011 by Simon Schneegans
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 3 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, see <http://www.gnu.org/licenses/>.
*/
namespace GnomePie {
/////////////////////////////////////////////////////////////////////////
/// Some helper methods which focus the input on a given Gtk.Window.
/////////////////////////////////////////////////////////////////////////
public class FocusGrabber : GLib.Object {
/////////////////////////////////////////////////////////////////////
/// Utilities for grabbing focus.
/// Code from Gnome-Do/Synapse.
/////////////////////////////////////////////////////////////////////
public static void grab(Gtk.Window window) {
window.present_with_time(Gdk.CURRENT_TIME);
window.get_window().raise();
window.get_window().focus(Gdk.CURRENT_TIME);
int i = 0;
Timeout.add(100, () => {
if (++i >= 100) return false;
return !try_grab_window(window);
});
}
/////////////////////////////////////////////////////////////////////
/// Code from Gnome-Do/Synapse.
/////////////////////////////////////////////////////////////////////
public static void ungrab(Gtk.Window window) {
Gdk.pointer_ungrab(Gdk.CURRENT_TIME);
Gdk.keyboard_ungrab(Gdk.CURRENT_TIME);
Gtk.grab_remove(window);
}
/////////////////////////////////////////////////////////////////////
/// Code from Gnome-Do/Synapse.
/////////////////////////////////////////////////////////////////////
private static bool try_grab_window(Gtk.Window window) {
if (Gdk.pointer_grab(window.get_window(), true, Gdk.EventMask.BUTTON_PRESS_MASK |
Gdk.EventMask.BUTTON_RELEASE_MASK | Gdk.EventMask.POINTER_MOTION_MASK,
null, null, Gdk.CURRENT_TIME) == Gdk.GrabStatus.SUCCESS) {
if (Gdk.keyboard_grab(window.get_window(), true, Gdk.CURRENT_TIME) == Gdk.GrabStatus.SUCCESS) {
Gtk.grab_add(window);
return true;
} else {
Gdk.pointer_ungrab(Gdk.CURRENT_TIME);
return false;
}
}
return false;
}
}
}
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