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authorAlessandro Ghedini <al3xbio@gmail.com>2011-10-19 10:56:04 +0200
committerAlessandro Ghedini <al3xbio@gmail.com>2011-10-19 10:56:04 +0200
commit6451a495637c6e3047a5a56573cffc6e3de9a515 (patch)
tree7c3eb29532e7c4b36a9da13c5890664fb816959b /src/utilities/key.vala
Imported Upstream version 0.2+gitdfdad95upstream/0.2+gitdfdad95
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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 {
+
+/////////////////////////////////////////////////////////////////////////
+/// A class which represents a key stroke. It can be used to "press"
+/// the associated keys.
+/////////////////////////////////////////////////////////////////////////
+
+public class Key : GLib.Object {
+
+ /////////////////////////////////////////////////////////////////////
+ /// Some static members, which are often used by this class.
+ /////////////////////////////////////////////////////////////////////
+
+ private static X.Display display;
+
+ private static int shift_code;
+ private static int ctrl_code;
+ private static int alt_code;
+ private static int super_code;
+
+ /////////////////////////////////////////////////////////////////////
+ /// A human readable form of the Key's accelerator.
+ /////////////////////////////////////////////////////////////////////
+
+ public string label { get; private set; }
+
+ /////////////////////////////////////////////////////////////////////
+ /// The accelerator of the Key.
+ /////////////////////////////////////////////////////////////////////
+
+ public string accelerator { get; private set; }
+
+ /////////////////////////////////////////////////////////////////////
+ /// Keycode and modifiers of this stroke.
+ /////////////////////////////////////////////////////////////////////
+
+ private int key_code;
+ private Gdk.ModifierType modifiers;
+
+ /////////////////////////////////////////////////////////////////////
+ /// C'tor, initializes all members.
+ /////////////////////////////////////////////////////////////////////
+
+ public Key(string stroke) {
+ this.accelerator = stroke;
+
+ uint keysym;
+ Gtk.accelerator_parse(stroke, out keysym, out this.modifiers);
+ this.key_code = display.keysym_to_keycode(keysym);
+ this.label = Gtk.accelerator_get_label(keysym, this.modifiers);
+ }
+
+ /////////////////////////////////////////////////////////////////////
+ /// Initializes static members.
+ /////////////////////////////////////////////////////////////////////
+
+ static construct {
+ display = new X.Display();
+
+ shift_code = display.keysym_to_keycode(Gdk.keyval_from_name("Shift_L"));
+ ctrl_code = display.keysym_to_keycode(Gdk.keyval_from_name("Control_L"));
+ alt_code = display.keysym_to_keycode(Gdk.keyval_from_name("Alt_L"));
+ super_code = display.keysym_to_keycode(Gdk.keyval_from_name("Super_L"));
+ }
+
+ /////////////////////////////////////////////////////////////////////
+ /// Simulates the pressing of the Key .
+ /////////////////////////////////////////////////////////////////////
+
+ public void press() {
+ // store currently pressed modifier keys
+ Gdk.ModifierType current_modifiers = get_modifiers();
+
+ // release them and press the desired ones
+ press_modifiers(current_modifiers, false);
+ press_modifiers(this.modifiers, true);
+
+ // send events to X
+ display.flush();
+
+ // press and release the actual key
+ X.Test.fake_key_event(this.display, this.key_code, true, 0);
+ X.Test.fake_key_event(this.display, this.key_code, false, 0);
+
+ // release the pressed modifiers and re-press the keys hold down by the user
+ press_modifiers(this.modifiers, false);
+ press_modifiers(current_modifiers, true);
+
+ // send events to X
+ display.flush();
+ }
+
+ /////////////////////////////////////////////////////////////////////
+ /// Helper method returning currently hold down modifier keys.
+ /////////////////////////////////////////////////////////////////////
+
+ private Gdk.ModifierType get_modifiers() {
+ Gdk.ModifierType modifiers;
+ Gdk.Display.get_default().get_pointer(null, null, null, out modifiers);
+ return modifiers;
+ }
+
+ /////////////////////////////////////////////////////////////////////
+ /// Helper method which 'presses' the desired modifier keys.
+ /////////////////////////////////////////////////////////////////////
+
+ private void press_modifiers(Gdk.ModifierType modifiers, bool down) {
+ if ((modifiers & Gdk.ModifierType.CONTROL_MASK) > 0)
+ X.Test.fake_key_event(this.display, this.ctrl_code, down, 0);
+
+ if ((modifiers & Gdk.ModifierType.SHIFT_MASK) > 0)
+ X.Test.fake_key_event(this.display, this.shift_code, down, 0);
+
+ if ((modifiers & Gdk.ModifierType.MOD1_MASK) > 0)
+ X.Test.fake_key_event(this.display, this.alt_code, down, 0);
+
+ if ((modifiers & Gdk.ModifierType.SUPER_MASK) > 0)
+ X.Test.fake_key_event(this.display, this.super_code, down, 0);
+ }
+}
+
+}