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/////////////////////////////////////////////////////////////////////////
// Copyright (c) 2011-2017 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_l_code;
private static int shift_r_code;
private static int ctrl_l_code;
private static int ctrl_r_code;
private static int alt_l_code;
private static int alt_r_code;
private static int super_l_code;
private static int super_r_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 to defaults.
/////////////////////////////////////////////////////////////////////
public Key() {
this.accelerator = "";
this.modifiers = 0;
this.key_code = 0;
this.label = _("Not bound");
}
/////////////////////////////////////////////////////////////////////
/// C'tor, initializes all members.
/////////////////////////////////////////////////////////////////////
public Key.from_string(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);
}
/////////////////////////////////////////////////////////////////////
/// C'tor, initializes all members.
/////////////////////////////////////////////////////////////////////
public Key.from_values(uint keysym, Gdk.ModifierType modifiers) {
this.accelerator = Gtk.accelerator_name(keysym, modifiers);
this.label = Gtk.accelerator_get_label(keysym, modifiers);
this.key_code = display.keysym_to_keycode(keysym);
this.modifiers = modifiers;
}
/////////////////////////////////////////////////////////////////////
/// Initializes static members.
/////////////////////////////////////////////////////////////////////
static construct {
display = new X.Display();
shift_l_code = display.keysym_to_keycode(Gdk.keyval_from_name("Shift_L"));
shift_r_code = display.keysym_to_keycode(Gdk.keyval_from_name("Shift_R"));
ctrl_l_code = display.keysym_to_keycode(Gdk.keyval_from_name("Control_L"));
ctrl_r_code = display.keysym_to_keycode(Gdk.keyval_from_name("Control_R"));
alt_l_code = display.keysym_to_keycode(Gdk.keyval_from_name("Alt_L"));
alt_r_code = display.keysym_to_keycode(Gdk.keyval_from_name("Alt_R"));
super_l_code = display.keysym_to_keycode(Gdk.keyval_from_name("Super_L"));
super_r_code = display.keysym_to_keycode(Gdk.keyval_from_name("Super_R"));
}
/////////////////////////////////////////////////////////////////////
/// 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
release_modifiers(current_modifiers);
press_modifiers(this.modifiers);
// send events to X
display.flush();
// press and release the actual key
XTest.fake_key_event(display, this.key_code, true, 0);
XTest.fake_key_event(display, this.key_code, false, 0);
// release the pressed modifiers and re-press the keys hold down by the user
release_modifiers(this.modifiers);
// press_modifiers(current_modifiers);
// send events to X
display.flush();
}
/////////////////////////////////////////////////////////////////////
/// Helper method returning currently hold down modifier keys.
/////////////////////////////////////////////////////////////////////
private Gdk.ModifierType get_modifiers() {
return (Gdk.ModifierType)Gdk.Keymap.get_default().get_modifier_state();
}
/////////////////////////////////////////////////////////////////////
/// Helper method which 'releases' the desired modifier keys.
/////////////////////////////////////////////////////////////////////
private void release_modifiers(Gdk.ModifierType modifiers) {
// since we do not know whether left or right version of each key
// is pressed, we release both...
if ((modifiers & Gdk.ModifierType.CONTROL_MASK) > 0) {
XTest.fake_key_event(display, ctrl_l_code, false, 0);
XTest.fake_key_event(display, ctrl_r_code, false, 0);
}
if ((modifiers & Gdk.ModifierType.SHIFT_MASK) > 0) {
XTest.fake_key_event(display, shift_l_code, false, 0);
XTest.fake_key_event(display, shift_r_code, false, 0);
}
if ((modifiers & Gdk.ModifierType.MOD1_MASK) > 0) {
XTest.fake_key_event(display, alt_l_code, false, 0);
XTest.fake_key_event(display, alt_r_code, false, 0);
}
if ((modifiers & Gdk.ModifierType.SUPER_MASK) > 0) {
XTest.fake_key_event(display, super_l_code, false, 0);
XTest.fake_key_event(display, super_r_code, false, 0);
}
}
/////////////////////////////////////////////////////////////////////
/// Helper method which 'presses' the desired modifier keys.
/////////////////////////////////////////////////////////////////////
private void press_modifiers(Gdk.ModifierType modifiers) {
if ((modifiers & Gdk.ModifierType.CONTROL_MASK) > 0) {
XTest.fake_key_event(display, ctrl_l_code, true, 0);
}
if ((modifiers & Gdk.ModifierType.SHIFT_MASK) > 0) {
XTest.fake_key_event(display, shift_l_code, true, 0);
}
if ((modifiers & Gdk.ModifierType.MOD1_MASK) > 0) {
XTest.fake_key_event(display, alt_l_code, true, 0);
}
if ((modifiers & Gdk.ModifierType.SUPER_MASK) > 0) {
XTest.fake_key_event(display, super_l_code, true, 0);
}
}
}
}
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