mirror of
https://github.com/brl/mutter.git
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4691878a76
As x11 considers num lock and scroll lock to be modifiers, code that checks for an exact modifier combination will fail if naively done when num lock or scroll lock are turned on. Applications that want to ignore these modifiers will need to use XKB to manually mask out the modifier state. As it is very unlikely that applications will want to care about the state of num lock or scroll lock for key press/key release events, mask out the num lock and scroll lock keys automatically. https://bugzilla.gnome.org/show_bug.cgi?id=690664
505 lines
14 KiB
C
505 lines
14 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Copyright (C) 2010 Intel Corp.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Author: Emmanuele Bassi <ebassi@linux.intel.com>
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*/
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#include "config.h"
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#include "clutter-keymap-x11.h"
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#include "clutter-backend-x11.h"
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#include "clutter-debug.h"
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#include "clutter-event-translator.h"
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#include "clutter-private.h"
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#include <X11/Xatom.h>
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#ifdef HAVE_XKB
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#include <X11/XKBlib.h>
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#endif
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typedef struct _ClutterKeymapX11Class ClutterKeymapX11Class;
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struct _ClutterKeymapX11
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{
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GObject parent_instance;
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ClutterBackend *backend;
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int min_keycode;
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int max_keycode;
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ClutterModifierType modmap[8];
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ClutterModifierType num_lock_mask;
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ClutterModifierType scroll_lock_mask;
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#ifdef HAVE_XKB
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XkbDescPtr xkb_desc;
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int xkb_event_base;
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guint xkb_map_serial;
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#endif
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guint caps_lock_state : 1;
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guint num_lock_state : 1;
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};
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struct _ClutterKeymapX11Class
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{
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GObjectClass parent_class;
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};
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enum
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{
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PROP_0,
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PROP_BACKEND,
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PROP_LAST
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};
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static GParamSpec *obj_props[PROP_LAST] = { NULL, };
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static void clutter_event_translator_iface_init (ClutterEventTranslatorIface *iface);
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#define clutter_keymap_x11_get_type _clutter_keymap_x11_get_type
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G_DEFINE_TYPE_WITH_CODE (ClutterKeymapX11, clutter_keymap_x11, G_TYPE_OBJECT,
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G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_EVENT_TRANSLATOR,
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clutter_event_translator_iface_init));
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#ifdef HAVE_XKB
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/* code adapted from gdk/x11/gdkkeys-x11.c - update_modmap */
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static void
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update_modmap (Display *display,
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ClutterKeymapX11 *keymap_x11)
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{
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static struct {
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const gchar *name;
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Atom atom;
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ClutterModifierType mask;
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} vmods[] = {
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{ "Meta", 0, CLUTTER_META_MASK },
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{ "Super", 0, CLUTTER_SUPER_MASK },
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{ "Hyper", 0, CLUTTER_HYPER_MASK },
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{ NULL, 0, 0 }
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};
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int i, j, k;
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if (vmods[0].atom == 0)
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for (i = 0; vmods[i].name; i++)
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vmods[i].atom = XInternAtom (display, vmods[i].name, FALSE);
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for (i = 0; i < 8; i++)
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keymap_x11->modmap[i] = 1 << i;
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for (i = 0; i < XkbNumVirtualMods; i++)
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{
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for (j = 0; vmods[j].atom; j++)
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{
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if (keymap_x11->xkb_desc->names->vmods[i] == vmods[j].atom)
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{
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for (k = 0; k < 8; k++)
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{
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if (keymap_x11->xkb_desc->server->vmods[i] & (1 << k))
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keymap_x11->modmap[k] |= vmods[j].mask;
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}
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}
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}
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}
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}
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static XkbDescPtr
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get_xkb (ClutterKeymapX11 *keymap_x11)
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{
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ClutterBackendX11 *backend_x11 = CLUTTER_BACKEND_X11 (keymap_x11->backend);
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if (keymap_x11->max_keycode == 0)
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XDisplayKeycodes (backend_x11->xdpy,
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&keymap_x11->min_keycode,
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&keymap_x11->max_keycode);
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if (keymap_x11->xkb_desc == NULL)
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{
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int flags = XkbKeySymsMask
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| XkbKeyTypesMask
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| XkbModifierMapMask
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| XkbVirtualModsMask;
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keymap_x11->xkb_desc = XkbGetMap (backend_x11->xdpy, flags, XkbUseCoreKbd);
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if (G_UNLIKELY (keymap_x11->xkb_desc == NULL))
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{
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g_error ("Failed to get the keymap from XKB");
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return NULL;
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}
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flags = XkbGroupNamesMask | XkbVirtualModNamesMask;
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XkbGetNames (backend_x11->xdpy, flags, keymap_x11->xkb_desc);
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update_modmap (backend_x11->xdpy, keymap_x11);
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}
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else if (keymap_x11->xkb_map_serial != backend_x11->keymap_serial)
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{
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int flags = XkbKeySymsMask
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| XkbKeyTypesMask
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| XkbModifierMapMask
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| XkbVirtualModsMask;
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CLUTTER_NOTE (BACKEND, "Updating XKB keymap");
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XkbGetUpdatedMap (backend_x11->xdpy, flags, keymap_x11->xkb_desc);
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flags = XkbGroupNamesMask | XkbVirtualModNamesMask;
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XkbGetNames (backend_x11->xdpy, flags, keymap_x11->xkb_desc);
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update_modmap (backend_x11->xdpy, keymap_x11);
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keymap_x11->xkb_map_serial = backend_x11->keymap_serial;
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}
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if (keymap_x11->num_lock_mask == 0)
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keymap_x11->num_lock_mask = XkbKeysymToModifiers (backend_x11->xdpy,
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XK_Num_Lock);
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if (keymap_x11->scroll_lock_mask == 0)
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keymap_x11->scroll_lock_mask = XkbKeysymToModifiers (backend_x11->xdpy,
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XK_Scroll_Lock);
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return keymap_x11->xkb_desc;
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}
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#endif /* HAVE_XKB */
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#ifdef HAVE_XKB
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static void
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update_locked_mods (ClutterKeymapX11 *keymap_x11,
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gint locked_mods)
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{
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#if 0
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gboolean old_caps_lock_state, old_num_lock_state;
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old_caps_lock_state = keymap_x11->caps_lock_state;
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old_num_lock_state = keymap_x11->num_lock_state;
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#endif
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keymap_x11->caps_lock_state = (locked_mods & CLUTTER_LOCK_MASK) != 0;
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keymap_x11->num_lock_state = (locked_mods & keymap_x11->num_lock_mask) != 0;
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CLUTTER_NOTE (BACKEND, "Locks state changed - Num: %s, Caps: %s",
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keymap_x11->num_lock_state ? "set" : "unset",
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keymap_x11->caps_lock_state ? "set" : "unset");
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#if 0
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/* Add signal to ClutterBackend? */
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if ((keymap_x11->caps_lock_state != old_caps_lock_state) ||
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(keymap_x11->num_lock_state != old_num_lock_state))
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g_signal_emit_by_name (keymap_x11->backend, "key-lock-changed");
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#endif
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}
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#endif /* HAVE_XKB */
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static void
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clutter_keymap_x11_constructed (GObject *gobject)
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{
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ClutterKeymapX11 *keymap_x11 = CLUTTER_KEYMAP_X11 (gobject);
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ClutterBackendX11 *backend_x11;
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g_assert (keymap_x11->backend != NULL);
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backend_x11 = CLUTTER_BACKEND_X11 (keymap_x11->backend);
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#ifdef HAVE_XKB
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{
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gint xkb_major = XkbMajorVersion;
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gint xkb_minor = XkbMinorVersion;
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if (XkbLibraryVersion (&xkb_major, &xkb_minor))
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{
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xkb_major = XkbMajorVersion;
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xkb_minor = XkbMinorVersion;
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if (XkbQueryExtension (backend_x11->xdpy,
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NULL,
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&keymap_x11->xkb_event_base,
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NULL,
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&xkb_major, &xkb_minor))
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{
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Bool detectable_autorepeat_supported;
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backend_x11->use_xkb = TRUE;
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XkbSelectEvents (backend_x11->xdpy,
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XkbUseCoreKbd,
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XkbNewKeyboardNotifyMask | XkbMapNotifyMask | XkbStateNotifyMask,
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XkbNewKeyboardNotifyMask | XkbMapNotifyMask | XkbStateNotifyMask);
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XkbSelectEventDetails (backend_x11->xdpy,
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XkbUseCoreKbd, XkbStateNotify,
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XkbAllStateComponentsMask,
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XkbGroupLockMask | XkbModifierLockMask);
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/* enable XKB autorepeat */
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XkbSetDetectableAutoRepeat (backend_x11->xdpy,
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True,
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&detectable_autorepeat_supported);
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backend_x11->have_xkb_autorepeat = detectable_autorepeat_supported;
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CLUTTER_NOTE (BACKEND, "Detectable autorepeat: %s",
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backend_x11->have_xkb_autorepeat ? "supported"
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: "not supported");
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}
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}
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}
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#endif /* HAVE_XKB */
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}
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static void
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clutter_keymap_x11_set_property (GObject *gobject,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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ClutterKeymapX11 *keymap = CLUTTER_KEYMAP_X11 (gobject);
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switch (prop_id)
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{
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case PROP_BACKEND:
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keymap->backend = g_value_get_object (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
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break;
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}
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}
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static void
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clutter_keymap_x11_finalize (GObject *gobject)
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{
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ClutterKeymapX11 *keymap;
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ClutterEventTranslator *translator;
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keymap = CLUTTER_KEYMAP_X11 (gobject);
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translator = CLUTTER_EVENT_TRANSLATOR (keymap);
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#ifdef HAVE_XKB
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_clutter_backend_remove_event_translator (keymap->backend, translator);
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if (keymap->xkb_desc != NULL)
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XkbFreeKeyboard (keymap->xkb_desc, XkbAllComponentsMask, True);
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#endif
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G_OBJECT_CLASS (clutter_keymap_x11_parent_class)->finalize (gobject);
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}
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static void
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clutter_keymap_x11_class_init (ClutterKeymapX11Class *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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obj_props[PROP_BACKEND] =
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g_param_spec_object ("backend",
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P_("Backend"),
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P_("The Clutter backend"),
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CLUTTER_TYPE_BACKEND,
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CLUTTER_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY);
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gobject_class->constructed = clutter_keymap_x11_constructed;
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gobject_class->set_property = clutter_keymap_x11_set_property;
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gobject_class->finalize = clutter_keymap_x11_finalize;
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g_object_class_install_properties (gobject_class, PROP_LAST, obj_props);
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}
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static void
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clutter_keymap_x11_init (ClutterKeymapX11 *keymap)
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{
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}
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static ClutterTranslateReturn
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clutter_keymap_x11_translate_event (ClutterEventTranslator *translator,
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gpointer native,
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ClutterEvent *event)
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{
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ClutterKeymapX11 *keymap_x11 = CLUTTER_KEYMAP_X11 (translator);
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ClutterBackendX11 *backend_x11;
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ClutterTranslateReturn retval;
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XEvent *xevent;
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backend_x11 = CLUTTER_BACKEND_X11 (keymap_x11->backend);
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if (!backend_x11->use_xkb)
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return CLUTTER_TRANSLATE_CONTINUE;
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xevent = native;
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retval = CLUTTER_TRANSLATE_CONTINUE;
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#ifdef HAVE_XKB
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if (xevent->type == keymap_x11->xkb_event_base)
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{
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XkbEvent *xkb_event = (XkbEvent *) xevent;
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switch (xkb_event->any.xkb_type)
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{
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case XkbStateNotify:
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CLUTTER_NOTE (EVENT, "Updating locked modifiers");
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update_locked_mods (keymap_x11, xkb_event->state.locked_mods);
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retval = CLUTTER_TRANSLATE_REMOVE;
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break;
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case XkbMapNotify:
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CLUTTER_NOTE (EVENT, "Updating keyboard mapping");
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XkbRefreshKeyboardMapping (&xkb_event->map);
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backend_x11->keymap_serial += 1;
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retval = CLUTTER_TRANSLATE_REMOVE;
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break;
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default:
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break;
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}
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}
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#endif /* HAVE_XKB */
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return retval;
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}
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static void
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clutter_event_translator_iface_init (ClutterEventTranslatorIface *iface)
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{
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iface->translate_event = clutter_keymap_x11_translate_event;
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}
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gint
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_clutter_keymap_x11_get_key_group (ClutterKeymapX11 *keymap,
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ClutterModifierType state)
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{
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#ifdef HAVE_XKB
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return XkbGroupForCoreState (state);
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#else
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return 0;
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#endif /* HAVE_XKB */
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}
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gboolean
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_clutter_keymap_x11_get_num_lock_state (ClutterKeymapX11 *keymap)
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{
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g_return_val_if_fail (CLUTTER_IS_KEYMAP_X11 (keymap), FALSE);
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return keymap->num_lock_state;
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}
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gboolean
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_clutter_keymap_x11_get_caps_lock_state (ClutterKeymapX11 *keymap)
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{
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g_return_val_if_fail (CLUTTER_IS_KEYMAP_X11 (keymap), FALSE);
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return keymap->caps_lock_state;
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}
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G_GNUC_BEGIN_IGNORE_DEPRECATIONS
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/* XXX - yes, I know that XKeycodeToKeysym() has been deprecated; hopefully,
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* this code will never get run on any decent system that is also able to
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* run Clutter. I just don't want to copy the implementation inside GDK for
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* a fallback path.
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*/
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static int
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translate_keysym (ClutterKeymapX11 *keymap,
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guint hardware_keycode)
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{
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ClutterBackendX11 *backend_x11;
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gint retval;
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backend_x11 = CLUTTER_BACKEND_X11 (keymap->backend);
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retval = XKeycodeToKeysym (backend_x11->xdpy, hardware_keycode, 0);
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return retval;
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}
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G_GNUC_END_IGNORE_DEPRECATIONS
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gint
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_clutter_keymap_x11_translate_key_state (ClutterKeymapX11 *keymap,
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guint hardware_keycode,
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ClutterModifierType *modifier_state_p,
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ClutterModifierType *mods_p)
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{
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ClutterBackendX11 *backend_x11;
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ClutterModifierType unconsumed_modifiers = 0;
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ClutterModifierType modifier_state = *modifier_state_p;
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gint retval;
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g_return_val_if_fail (CLUTTER_IS_KEYMAP_X11 (keymap), 0);
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backend_x11 = CLUTTER_BACKEND_X11 (keymap->backend);
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#ifdef HAVE_XKB
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if (backend_x11->use_xkb)
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{
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XkbDescRec *xkb = get_xkb (keymap);
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KeySym tmp_keysym;
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if (XkbTranslateKeyCode (xkb, hardware_keycode, modifier_state,
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&unconsumed_modifiers,
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&tmp_keysym))
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{
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retval = tmp_keysym;
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}
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else
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retval = 0;
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}
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else
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#endif /* HAVE_XKB */
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retval = translate_keysym (keymap, hardware_keycode);
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if (mods_p)
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*mods_p = unconsumed_modifiers;
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*modifier_state_p = modifier_state & ~(keymap->num_lock_mask |
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keymap->scroll_lock_mask |
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LockMask);
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return retval;
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}
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gboolean
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_clutter_keymap_x11_get_is_modifier (ClutterKeymapX11 *keymap,
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gint keycode)
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{
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g_return_val_if_fail (CLUTTER_IS_KEYMAP_X11 (keymap), FALSE);
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if (keycode < keymap->min_keycode || keycode > keymap->max_keycode)
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return FALSE;
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#ifdef HAVE_XKB
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if (CLUTTER_BACKEND_X11 (keymap->backend)->use_xkb)
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{
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XkbDescRec *xkb = get_xkb (keymap);
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if (xkb->map->modmap && xkb->map->modmap[keycode] != 0)
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|
return TRUE;
|
|
}
|
|
#endif /* HAVE_XKB */
|
|
|
|
return FALSE;
|
|
}
|