Imported Upstream version 0.3.1upstream/0.3.1

1 files changed, 74 insertions, 0 deletions

diff --git a/src/utilities/focusGrabber.vala b/src/utilities/focusGrabber.vala
new file mode 100644
index 0000000..0e07b39
--- /dev/null
+++ b/src/utilities/focusGrabber.vala
@@ -0,0 +1,74 @@
+/* 
+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;
+    }  
+}
+
+}