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/*
* This file is part of GtkHotkey.
* Copyright (C) 2008, 2009 Mark Lee <gtkhotkey@lazymalevolence.com>
*
* GtkHotkey is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GtkHotkey 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GtkHotkey. If not, see <http://www.gnu.org/licenses/>.
*/
using Gdk;
namespace GtkHotkey
{
[Compact]
private class AtomValue
{
public Win32.Atom atom;
public AtomValue (Win32.Atom atom)
{
this.atom = atom;
}
public static uint hash (void* key)
{
if (key == null)
{
return 0;
}
else
{
return (uint)(((AtomValue)key).atom);
}
}
public static bool equals (void* a, void* b)
{
return ((AtomValue)a).atom == ((AtomValue)b).atom;
}
}
[Compact]
private class Win32Hotkey
{
public Win32.Atom atom;
public Info info;
public Win32Hotkey (Win32.Atom atom, Info info)
{
this.atom = atom;
this.info = info;
}
~Win32Hotkey ()
{
this.atom.delete_global ();
}
}
public class Win32Listener : Listener
{
private Gdk.Window hidden = null;
private Win32.WindowHandle hwnd;
private HashTable<AtomValue,Win32Hotkey> hotkey_registry;
construct
{
this.hidden = this.create_hidden_msg_window ();
this.hwnd = Win32.WindowHandle.from_gdk_window (this.hidden);
this.hotkey_registry = new HashTable<AtomValue,Win32Hotkey> ((HashFunc)AtomValue.hash,
(EqualFunc)AtomValue.equals);
this.hidden.add_filter (this.hotkey_filter);
}
~Win32Listener ()
{
List<weak AtomValue>? keys = this.hotkey_registry.get_keys ();
foreach (weak AtomValue av in keys)
{
this.do_remove_hotkey (av.atom);
}
this.hidden.remove_filter (this.hotkey_filter); // XXX Fix VAPI
this.hidden.destroy ();
this.hidden = null;
}
private bool
do_remove_hotkey (Win32.Atom atom)
{
Win32.HotKey.unregister (this.hwnd, atom);
AtomValue av = new AtomValue (atom);
return this.hotkey_registry.remove (av);
}
/**
* "Ported" from GTK+ SVN revision 20900, file
* </modules/engines/ms-windows/msw_theme_main.c>.
* Licensed under the LGPL-2 or later.
*/
private Window
create_hidden_msg_window ()
{
WindowAttr attributes = WindowAttr ();
int attributes_mask;
attributes.x = -100;
attributes.y = -100;
attributes.width = 10;
attributes.height = 10;
attributes.window_type = WindowType.TEMP;
attributes.wclass = WindowClass.INPUT_ONLY;
attributes.override_redirect = true;
attributes.event_mask = 0;
attributes_mask = WindowAttributesType.X |
WindowAttributesType.Y |
WindowAttributesType.NOREDIR;
return new Window (get_default_root_window (), attributes,
attributes_mask);
}
private Win32.Atom atomize (Info hotkey)
{
string key;
Win32.Atom atom;
key = hotkey.application_id + ":" + hotkey.key_id;
atom = Win32.Atom.find_global (key);
if (atom == 0)
{
return Win32.Atom.add_global (key);
}
else
{
return atom;
}
}
private FilterReturn
hotkey_filter (XEvent xevt, Event evt)
{
weak Win32.Message* p_msg = (Win32.Message*)xevt;
weak Win32.Message msg = *p_msg;
if (msg.message == Win32.Message.HOTKEY)
{
AtomValue av = new AtomValue ((Win32.Atom)msg.wParam);
weak Win32Hotkey? wh = this.hotkey_registry.lookup (av);
if (wh != null)
{
time_t current_time = time_t ();
uint event_time = (uint)current_time;
this.activated (wh.info, event_time);
if (wh.info != null)
{
wh.info.activated (event_time);
}
return Gdk.FilterReturn.REMOVE;
}
}
return Gdk.FilterReturn.CONTINUE;
}
private uint
convert_modifier_mask (Gdk.ModifierType modifier)
{
uint win32_modifier = 0;
if ((modifier & ModifierType.SHIFT_MASK) != 0)
{
win32_modifier |= Win32.HotKey.MOD_SHIFT;
}
if ((modifier & ModifierType.CONTROL_MASK) != 0)
{
win32_modifier |= Win32.HotKey.MOD_CONTROL;
}
if ((modifier & ModifierType.MOD1_MASK) != 0)
{
win32_modifier |= Win32.HotKey.MOD_ALT;
}
if ((modifier & ModifierType.SUPER_MASK) != 0 ||
(modifier & ModifierType.HYPER_MASK) != 0)
{
win32_modifier |= Win32.HotKey.MOD_WIN;
}
return win32_modifier;
}
private uint
convert_keyval (uint keyval)
{
weak Gdk.Keymap km;
weak Gdk.KeymapKey[]? keys;
km = Gdk.Keymap.get_default ();
if (km.get_entries_for_keyval (keyval, out keys))
{
return keys[0].keycode;
}
else
{
return 0;
}
}
public override bool bind_hotkey (Info hotkey) throws Error
{
bool result = false;
weak Win32Hotkey? wh = null;
Win32.Atom atom = this.atomize (hotkey);
AtomValue av = new AtomValue (atom);
wh = this.hotkey_registry.lookup (av);
if (wh == null)
{
uint keyval, modifier, keycode;
Gdk.ModifierType gdk_modifier;
Gtk.accelerator_parse (hotkey.signature, out keyval,
out gdk_modifier);
modifier = this.convert_modifier_mask (gdk_modifier);
keycode = this.convert_keyval (keyval);
result = Win32.HotKey.register (this.hwnd, atom, modifier, keycode);
if (result)
{
Win32Hotkey new_wh = new Win32Hotkey (atom, hotkey);
this.hotkey_registry.insert (#av, #new_wh);
}
else
{
warning ("Could not register hotkey.");
}
}
return result;
}
public override bool unbind_hotkey (Info hotkey) throws Error
{
weak Win32Hotkey? wh = null;
Win32.Atom atom = this.atomize (hotkey);
AtomValue av = new AtomValue (atom);
wh = this.hotkey_registry.lookup (av);
if (wh != null)
{
return this.do_remove_hotkey (atom);
}
else
{
return false;
}
}
}
}
/* vim: set ts=2 sts=2 sw=2 et ai cindent : */
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