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mutter-performance-source/clutter/x11/clutter-device-manager-core-x11.c
Jasper St. Pierre 4691878a76 x11: Ignore num lock / scroll lock for event state 
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
2013-01-14 12:56:07 -05:00

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/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Copyright © 2009, 2010, 2011 Intel Corp.
*
* This library 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 2 of the License, or (at your option) any later version.
*
* This library 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 this library. If not, see <http://www.gnu.org/licenses/>.
*
* Author: Emmanuele Bassi <ebassi@linux.intel.com>
*/
#include "config.h"
#include "clutter-device-manager-core-x11.h"
#include "clutter-backend-x11.h"
#include "clutter-input-device-core-x11.h"
#include "clutter-stage-x11.h"
#include "clutter-backend.h"
#include "clutter-debug.h"
#include "clutter-device-manager-private.h"
#include "clutter-event-private.h"
#include "clutter-event-translator.h"
#include "clutter-stage-private.h"
#include "clutter-private.h"
#ifdef HAVE_XINPUT
#include <X11/extensions/XInput.h>
/* old versions of XI.h don't define these */
#ifndef IsXExtensionKeyboard
#define IsXExtensionKeyboard 3
#define IsXExtensionPointer 4
#endif
#endif /* HAVE_XINPUT */
enum
{
PROP_0,
PROP_EVENT_BASE,
PROP_LAST
};
static GParamSpec *obj_props[PROP_LAST] = { NULL, };
static void clutter_event_translator_iface_init (ClutterEventTranslatorIface *iface);
#define clutter_device_manager_x11_get_type _clutter_device_manager_x11_get_type
G_DEFINE_TYPE_WITH_CODE (ClutterDeviceManagerX11,
clutter_device_manager_x11,
CLUTTER_TYPE_DEVICE_MANAGER,
G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_EVENT_TRANSLATOR,
clutter_event_translator_iface_init));
#ifdef HAVE_XINPUT
static void
translate_class_info (ClutterInputDevice *device,
XDeviceInfo *info)
{
XAnyClassPtr any_class;
gint i;
any_class = info->inputclassinfo;
for (i = 0; i < info->num_classes; i++)
{
switch (any_class->class)
{
case ButtonClass:
break;
case KeyClass:
{
XKeyInfo *xk_info = (XKeyInfo *) any_class;
ClutterInputDeviceX11 *device_x11;
guint n_keys;
device_x11 = CLUTTER_INPUT_DEVICE_X11 (device);
n_keys = xk_info->max_keycode - xk_info->min_keycode + 1;
_clutter_input_device_set_n_keys (device, n_keys);
_clutter_input_device_x11_set_keycodes (device_x11,
xk_info->min_keycode,
xk_info->max_keycode);
}
break;
case ValuatorClass:
{
XValuatorInfo *xv_info = (XValuatorInfo *) any_class;
gint j;
for (j = 0; j < xv_info->num_axes; j++)
{
ClutterInputAxis axis;
switch (j)
{
case 0:
axis = CLUTTER_INPUT_AXIS_X;
break;
case 1:
axis = CLUTTER_INPUT_AXIS_Y;
break;
case 2:
axis = CLUTTER_INPUT_AXIS_PRESSURE;
break;
case 3:
axis = CLUTTER_INPUT_AXIS_XTILT;
break;
case 4:
axis = CLUTTER_INPUT_AXIS_YTILT;
break;
case 5:
axis = CLUTTER_INPUT_AXIS_WHEEL;
break;
default:
axis = CLUTTER_INPUT_AXIS_IGNORE;
break;
}
_clutter_input_device_add_axis (device, axis,
xv_info->axes[j].min_value,
xv_info->axes[j].max_value,
xv_info->axes[j].resolution);
}
}
break;
}
any_class = (XAnyClassPtr) (((char *) any_class) + any_class->length);
}
}
static ClutterInputDevice *
create_device (ClutterDeviceManagerX11 *manager_x11,
ClutterBackendX11 *backend_x11,
XDeviceInfo *info)
{
ClutterInputDeviceType source;
ClutterInputDevice *retval;
if (info->use != IsXExtensionPointer &&
info->use != IsXExtensionKeyboard)
return NULL;
if (info->use == IsXExtensionKeyboard)
source = CLUTTER_KEYBOARD_DEVICE;
else
{
gchar *name;
name = g_ascii_strdown (info->name, -1);
if (strstr (name, "eraser") != NULL)
source = CLUTTER_ERASER_DEVICE;
else if (strstr (name, "cursor") != NULL)
source = CLUTTER_CURSOR_DEVICE;
else if (strstr (name, "wacom") != NULL || strstr (name, "pen") != NULL)
source = CLUTTER_PEN_DEVICE;
else
source = CLUTTER_POINTER_DEVICE;
g_free (name);
}
retval = g_object_new (CLUTTER_TYPE_INPUT_DEVICE_X11,
"name", info->name,
"id", info->id,
"has-cursor", FALSE,
"device-manager", manager_x11,
"device-type", source,
"device-mode", CLUTTER_INPUT_MODE_FLOATING,
"backend", backend_x11,
"enabled", FALSE,
NULL);
translate_class_info (retval, info);
CLUTTER_NOTE (BACKEND,
"XI Device '%s' (id: %d) created",
info->name,
(int) info->id);
return retval;
}
#endif /* HAVE_XINPUT */
static inline void
translate_key_event (ClutterBackendX11 *backend_x11,
ClutterDeviceManagerX11 *manager_x11,
ClutterEvent *event,
XEvent *xevent)
{
ClutterEventX11 *event_x11;
char buffer[256 + 1];
int n;
event->key.type = xevent->xany.type == KeyPress ? CLUTTER_KEY_PRESS
: CLUTTER_KEY_RELEASE;
event->key.time = xevent->xkey.time;
clutter_event_set_device (event, manager_x11->core_keyboard);
/* KeyEvents have platform specific data associated to them */
event_x11 = _clutter_event_x11_new ();
_clutter_event_set_platform_data (event, event_x11);
event->key.modifier_state = (ClutterModifierType) xevent->xkey.state;
event->key.hardware_keycode = xevent->xkey.keycode;
/* keyval is the key ignoring all modifiers ('1' vs. '!') */
event->key.keyval =
_clutter_keymap_x11_translate_key_state (backend_x11->keymap,
event->key.hardware_keycode,
&event->key.modifier_state,
NULL);
event_x11->key_group =
_clutter_keymap_x11_get_key_group (backend_x11->keymap,
event->key.modifier_state);
event_x11->key_is_modifier =
_clutter_keymap_x11_get_is_modifier (backend_x11->keymap,
event->key.hardware_keycode);
event_x11->num_lock_set =
_clutter_keymap_x11_get_num_lock_state (backend_x11->keymap);
event_x11->caps_lock_set =
_clutter_keymap_x11_get_caps_lock_state (backend_x11->keymap);
/* unicode_value is the printable representation */
n = XLookupString (&xevent->xkey, buffer, sizeof (buffer) - 1, NULL, NULL);
if (n != NoSymbol)
{
event->key.unicode_value = g_utf8_get_char_validated (buffer, n);
if ((event->key.unicode_value != (gunichar) -1) &&
(event->key.unicode_value != (gunichar) -2))
goto out;
}
else
event->key.unicode_value = (gunichar)'\0';
out:
CLUTTER_NOTE (EVENT,
"%s: win:0x%x, key: %12s (%d)",
event->any.type == CLUTTER_KEY_PRESS
? "key press "
: "key release",
(unsigned int) xevent->xkey.window,
event->key.keyval ? buffer : "(none)",
event->key.keyval);
return;
}
#ifdef HAVE_XINPUT
static ClutterInputDevice *
get_device_from_event (ClutterDeviceManagerX11 *manager_x11,
XEvent *xevent)
{
guint32 device_id;
device_id = ((XDeviceButtonEvent *) xevent)->deviceid;
return g_hash_table_lookup (manager_x11->devices_by_id,
GINT_TO_POINTER (device_id));
}
#endif /* HAVE_XINPUT */
static ClutterTranslateReturn
clutter_device_manager_x11_translate_event (ClutterEventTranslator *translator,
gpointer native,
ClutterEvent *event)
{
ClutterDeviceManagerX11 *manager_x11;
ClutterBackendX11 *backend_x11;
ClutterStageX11 *stage_x11;
ClutterTranslateReturn res;
ClutterStage *stage;
XEvent *xevent;
#ifdef HAVE_XINPUT
ClutterInputDevice *device;
#endif
manager_x11 = CLUTTER_DEVICE_MANAGER_X11 (translator);
backend_x11 = CLUTTER_BACKEND_X11 (clutter_get_default_backend ());
xevent = native;
stage = clutter_x11_get_stage_from_window (xevent->xany.window);
if (stage == NULL)
return CLUTTER_TRANSLATE_CONTINUE;
if (CLUTTER_ACTOR_IN_DESTRUCTION (stage))
return CLUTTER_TRANSLATE_CONTINUE;
stage_x11 = CLUTTER_STAGE_X11 (_clutter_stage_get_window (stage));
event->any.stage = stage;
res = CLUTTER_TRANSLATE_CONTINUE;
#ifdef HAVE_XINPUT
device = get_device_from_event (manager_x11, xevent);
if (device != NULL)
{
ClutterInputDeviceX11 *device_x11;
gboolean retval;
device_x11 = CLUTTER_INPUT_DEVICE_X11 (device);
retval = _clutter_input_device_x11_translate_xi_event (device_x11,
stage_x11,
xevent,
event);
if (retval)
return CLUTTER_TRANSLATE_QUEUE;
}
#endif /* HAVE_XINPUT */
switch (xevent->type)
{
case KeyPress:
translate_key_event (backend_x11, manager_x11, event, xevent);
_clutter_stage_x11_set_user_time (stage_x11, xevent->xkey.time);
res = CLUTTER_TRANSLATE_QUEUE;
break;
case KeyRelease:
/* old-style X11 terminals require that even modern X11 send
* KeyPress/KeyRelease pairs when auto-repeating. for this
* reason modern(-ish) API like XKB has a way to detect
* auto-repeat and do a single KeyRelease at the end of a
* KeyPress sequence.
*
* this check emulates XKB's detectable auto-repeat; we peek
* the next event and check if it's a KeyPress for the same key
* and timestamp - and then ignore it if it matches the
* KeyRelease
*
* if we have XKB, and autorepeat is enabled, then this becomes
* a no-op
*/
if (!backend_x11->have_xkb_autorepeat && XPending (xevent->xkey.display))
{
XEvent next_event;
XPeekEvent (xevent->xkey.display, &next_event);
if (next_event.type == KeyPress &&
next_event.xkey.keycode == xevent->xkey.keycode &&
next_event.xkey.time == xevent->xkey.time)
{
res = CLUTTER_TRANSLATE_REMOVE;
break;
}
}
translate_key_event (backend_x11, manager_x11, event, xevent);
res = CLUTTER_TRANSLATE_QUEUE;
break;
case ButtonPress:
CLUTTER_NOTE (EVENT,
"button press: win: 0x%x, coords: %d, %d, button: %d",
(unsigned int) stage_x11->xwin,
xevent->xbutton.x,
xevent->xbutton.y,
xevent->xbutton.button);
switch (xevent->xbutton.button)
{
case 4: /* up */
case 5: /* down */
case 6: /* left */
case 7: /* right */
event->scroll.type = CLUTTER_SCROLL;
if (xevent->xbutton.button == 4)
event->scroll.direction = CLUTTER_SCROLL_UP;
else if (xevent->xbutton.button == 5)
event->scroll.direction = CLUTTER_SCROLL_DOWN;
else if (xevent->xbutton.button == 6)
event->scroll.direction = CLUTTER_SCROLL_LEFT;
else
event->scroll.direction = CLUTTER_SCROLL_RIGHT;
event->scroll.time = xevent->xbutton.time;
event->scroll.x = xevent->xbutton.x;
event->scroll.y = xevent->xbutton.y;
event->scroll.modifier_state = xevent->xbutton.state;
event->scroll.axes = NULL;
break;
default:
event->button.type = event->type = CLUTTER_BUTTON_PRESS;
event->button.time = xevent->xbutton.time;
event->button.x = xevent->xbutton.x;
event->button.y = xevent->xbutton.y;
event->button.modifier_state = xevent->xbutton.state;
event->button.button = xevent->xbutton.button;
event->button.axes = NULL;
break;
}
clutter_event_set_device (event, manager_x11->core_pointer);
_clutter_stage_x11_set_user_time (stage_x11, xevent->xbutton.time);
res = CLUTTER_TRANSLATE_QUEUE;
break;
case ButtonRelease:
CLUTTER_NOTE (EVENT,
"button press: win: 0x%x, coords: %d, %d, button: %d",
(unsigned int) stage_x11->xwin,
xevent->xbutton.x,
xevent->xbutton.y,
xevent->xbutton.button);
/* scroll events don't have a corresponding release */
if (xevent->xbutton.button == 4 ||
xevent->xbutton.button == 5 ||
xevent->xbutton.button == 6 ||
xevent->xbutton.button == 7)
{
res = CLUTTER_TRANSLATE_REMOVE;
break;
}
event->button.type = event->type = CLUTTER_BUTTON_RELEASE;
event->button.time = xevent->xbutton.time;
event->button.x = xevent->xbutton.x;
event->button.y = xevent->xbutton.y;
event->button.modifier_state = xevent->xbutton.state;
event->button.button = xevent->xbutton.button;
event->button.axes = NULL;
clutter_event_set_device (event, manager_x11->core_pointer);
res = CLUTTER_TRANSLATE_QUEUE;
break;
case MotionNotify:
CLUTTER_NOTE (EVENT,
"motion: win: 0x%x, coords: %d, %d",
(unsigned int) stage_x11->xwin,
xevent->xmotion.x,
xevent->xmotion.y);
event->motion.type = event->type = CLUTTER_MOTION;
event->motion.time = xevent->xmotion.time;
event->motion.x = xevent->xmotion.x;
event->motion.y = xevent->xmotion.y;
event->motion.modifier_state = xevent->xmotion.state;
event->motion.axes = NULL;
clutter_event_set_device (event, manager_x11->core_pointer);
res = CLUTTER_TRANSLATE_QUEUE;
break;
case EnterNotify:
CLUTTER_NOTE (EVENT, "Entering the stage (time:%u)",
(unsigned int) xevent->xcrossing.time);
event->crossing.type = CLUTTER_ENTER;
event->crossing.time = xevent->xcrossing.time;
event->crossing.x = xevent->xcrossing.x;
event->crossing.y = xevent->xcrossing.y;
event->crossing.source = CLUTTER_ACTOR (stage);
event->crossing.related = NULL;
clutter_event_set_device (event, manager_x11->core_pointer);
_clutter_input_device_set_stage (manager_x11->core_pointer, stage);
res = CLUTTER_TRANSLATE_QUEUE;
break;
case LeaveNotify:
if (manager_x11->core_pointer->stage == NULL)
{
CLUTTER_NOTE (EVENT, "Discarding LeaveNotify for "
"ButtonRelease event off-stage");
res = CLUTTER_TRANSLATE_REMOVE;
break;
}
/* we know that we are leaving the stage here */
CLUTTER_NOTE (EVENT, "Leaving the stage (time:%u)",
(unsigned int) xevent->xcrossing.time);
event->crossing.type = CLUTTER_LEAVE;
event->crossing.time = xevent->xcrossing.time;
event->crossing.x = xevent->xcrossing.x;
event->crossing.y = xevent->xcrossing.y;
event->crossing.source = CLUTTER_ACTOR (stage);
event->crossing.related = NULL;
clutter_event_set_device (event, manager_x11->core_pointer);
_clutter_input_device_set_stage (manager_x11->core_pointer, NULL);
res = CLUTTER_TRANSLATE_QUEUE;
break;
default:
break;
}
return res;
}
static void
clutter_event_translator_iface_init (ClutterEventTranslatorIface *iface)
{
iface->translate_event = clutter_device_manager_x11_translate_event;
}
static void
clutter_device_manager_x11_constructed (GObject *gobject)
{
ClutterDeviceManagerX11 *manager_x11;
ClutterBackendX11 *backend_x11;
#ifdef HAVE_XINPUT
ClutterDeviceManager *manager;
XDeviceInfo *x_devices = NULL;
int i, n_devices;
#endif /* HAVE_XINPUT */
manager_x11 = CLUTTER_DEVICE_MANAGER_X11 (gobject);
g_object_get (gobject, "backend", &backend_x11, NULL);
g_assert (backend_x11 != NULL);
#ifdef HAVE_XINPUT
manager = CLUTTER_DEVICE_MANAGER (gobject);
x_devices = XListInputDevices (backend_x11->xdpy, &n_devices);
if (n_devices == 0)
{
CLUTTER_NOTE (BACKEND, "No XInput devices found");
goto default_device;
}
for (i = 0; i < n_devices; i++)
{
XDeviceInfo *info = x_devices + i;
ClutterInputDevice *device;
CLUTTER_NOTE (BACKEND,
"Considering device %li with type %d, %d of %d",
info->id,
info->use,
i, n_devices);
device = create_device (manager_x11, backend_x11, info);
if (device != NULL)
_clutter_device_manager_add_device (manager, device);
}
XFreeDeviceList (x_devices);
default_device:
#endif /* HAVE_XINPUT */
/* fallback code in case:
*
* - we do not have XInput support compiled in
* - we do not have the XInput extension
*
* we register two default devices, one for the pointer
* and one for the keyboard. this block must also be
* executed for the XInput support because XI does not
* cover core devices
*/
manager_x11->core_pointer =
g_object_new (CLUTTER_TYPE_INPUT_DEVICE_X11,
"name", "Core Pointer",
"has-cursor", TRUE,
"device-type", CLUTTER_POINTER_DEVICE,
"device-manager", manager_x11,
"device-mode", CLUTTER_INPUT_MODE_MASTER,
"backend", backend_x11,
"enabled", TRUE,
NULL);
CLUTTER_NOTE (BACKEND, "Added core pointer device");
manager_x11->core_keyboard =
g_object_new (CLUTTER_TYPE_INPUT_DEVICE_X11,
"name", "Core Keyboard",
"has-cursor", FALSE,
"device-type", CLUTTER_KEYBOARD_DEVICE,
"device-manager", manager_x11,
"device-mode", CLUTTER_INPUT_MODE_MASTER,
"backend", backend_x11,
"enabled", TRUE,
NULL);
CLUTTER_NOTE (BACKEND, "Added core keyboard device");
/* associate core devices */
_clutter_input_device_set_associated_device (manager_x11->core_pointer,
manager_x11->core_keyboard);
_clutter_input_device_set_associated_device (manager_x11->core_keyboard,
manager_x11->core_pointer);
if (G_OBJECT_CLASS (clutter_device_manager_x11_parent_class)->constructed)
G_OBJECT_CLASS (clutter_device_manager_x11_parent_class)->constructed (gobject);
}
static void
clutter_device_manager_x11_add_device (ClutterDeviceManager *manager,
ClutterInputDevice *device)
{
ClutterDeviceManagerX11 *manager_x11 = CLUTTER_DEVICE_MANAGER_X11 (manager);
manager_x11->devices = g_slist_prepend (manager_x11->devices, device);
g_hash_table_replace (manager_x11->devices_by_id,
GINT_TO_POINTER (device->id),
device);
/* blow the cache */
g_slist_free (manager_x11->all_devices);
manager_x11->all_devices = NULL;
}
static void
clutter_device_manager_x11_remove_device (ClutterDeviceManager *manager,
ClutterInputDevice *device)
{
ClutterDeviceManagerX11 *manager_x11 = CLUTTER_DEVICE_MANAGER_X11 (manager);
g_hash_table_remove (manager_x11->devices_by_id,
GINT_TO_POINTER (device->id));
manager_x11->devices = g_slist_remove (manager_x11->devices, device);
/* blow the cache */
g_slist_free (manager_x11->all_devices);
manager_x11->all_devices = NULL;
}
static const GSList *
clutter_device_manager_x11_get_devices (ClutterDeviceManager *manager)
{
ClutterDeviceManagerX11 *manager_x11 = CLUTTER_DEVICE_MANAGER_X11 (manager);
/* cache the devices list so that we can keep the core pointer
* and keyboard outside of the ManagerX11:devices list
*/
if (manager_x11->all_devices == NULL)
{
GSList *all_devices = manager_x11->devices;
all_devices = g_slist_prepend (all_devices, manager_x11->core_keyboard);
all_devices = g_slist_prepend (all_devices, manager_x11->core_pointer);
manager_x11->all_devices = all_devices;
}
return CLUTTER_DEVICE_MANAGER_X11 (manager)->all_devices;
}
static ClutterInputDevice *
clutter_device_manager_x11_get_core_device (ClutterDeviceManager *manager,
ClutterInputDeviceType type)
{
ClutterDeviceManagerX11 *manager_x11;
manager_x11 = CLUTTER_DEVICE_MANAGER_X11 (manager);
switch (type)
{
case CLUTTER_POINTER_DEVICE:
return manager_x11->core_pointer;
case CLUTTER_KEYBOARD_DEVICE:
return manager_x11->core_keyboard;
default:
return NULL;
}
return NULL;
}
static ClutterInputDevice *
clutter_device_manager_x11_get_device (ClutterDeviceManager *manager,
gint id)
{
ClutterDeviceManagerX11 *manager_x11 = CLUTTER_DEVICE_MANAGER_X11 (manager);
return g_hash_table_lookup (manager_x11->devices_by_id,
GINT_TO_POINTER (id));
}
static void
clutter_device_manager_x11_set_property (GObject *gobject,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
ClutterDeviceManagerX11 *manager_x11 = CLUTTER_DEVICE_MANAGER_X11 (gobject);
switch (prop_id)
{
case PROP_EVENT_BASE:
manager_x11->xi_event_base = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
clutter_device_manager_x11_class_init (ClutterDeviceManagerX11Class *klass)
{
ClutterDeviceManagerClass *manager_class;
GObjectClass *gobject_class;
obj_props[PROP_EVENT_BASE] =
g_param_spec_int ("event-base",
"Event Base",
"The first XI event",
-1, G_MAXINT,
-1,
CLUTTER_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY);
gobject_class = G_OBJECT_CLASS (klass);
gobject_class->constructed = clutter_device_manager_x11_constructed;
gobject_class->set_property = clutter_device_manager_x11_set_property;
g_object_class_install_properties (gobject_class, PROP_LAST, obj_props);
manager_class = CLUTTER_DEVICE_MANAGER_CLASS (klass);
manager_class->add_device = clutter_device_manager_x11_add_device;
manager_class->remove_device = clutter_device_manager_x11_remove_device;
manager_class->get_devices = clutter_device_manager_x11_get_devices;
manager_class->get_core_device = clutter_device_manager_x11_get_core_device;
manager_class->get_device = clutter_device_manager_x11_get_device;
}
static void
clutter_device_manager_x11_init (ClutterDeviceManagerX11 *self)
{
self->devices_by_id = g_hash_table_new (NULL, NULL);
}
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