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mutter/clutter/x11/clutter-device-manager-xi2.c
Emmanuele Bassi 82d1e5a6ee Clean up crossing event synthesis code 
Clutter should just require that the windowing system used by a backend
adds a device to the stage when the device enters, and removes it from
the stage when the device leaves; with this information, we can
synthesize every crossing event and update the device state without
other intervention from the backend-specific code.

The generation of additional crossing events for actors that are
covering the stage at the coordinates of the crossing event should be
delegated to the event processing code.

The x11 and win32 backends need to be modified to relay the enter and
leave events from the windowing system.
2011-01-28 18:19:49 +00:00

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/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Copyright © 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 <stdint.h>
#include "clutter-device-manager-xi2.h"
#include "clutter-backend-x11.h"
#include "clutter-input-device-xi2.h"
#include "clutter-stage-x11.h"
#include "clutter-backend.h"
#include "clutter-debug.h"
#include "clutter-device-manager-private.h"
#include "clutter-event-translator.h"
#include "clutter-stage-private.h"
#include "clutter-private.h"
#include <X11/extensions/XInput2.h>
enum
{
PROP_0,
PROP_OPCODE,
PROP_LAST
};
static GParamSpec *obj_props[PROP_LAST] = { NULL, };
static const char *clutter_input_axis_atom_names[] = {
"Abs X", /* CLUTTER_INPUT_AXIS_X */
"Abs Y", /* CLUTTER_INPUT_AXIS_Y */
"Abs Pressure", /* CLUTTER_INPUT_AXIS_PRESSURE */
"Abs Tilt X", /* CLUTTER_INPUT_AXIS_XTILT */
"Abs Tilt Y", /* CLUTTER_INPUT_AXIS_YTILT */
"Abs Wheel", /* CLUTTER_INPUT_AXIS_WHEEL */
};
#define N_AXIS_ATOMS G_N_ELEMENTS (clutter_input_axis_atom_names)
static Atom clutter_input_axis_atoms[N_AXIS_ATOMS] = { 0, };
static void clutter_event_translator_iface_init (ClutterEventTranslatorIface *iface);
#define clutter_device_manager_xi2_get_type _clutter_device_manager_xi2_get_type
G_DEFINE_TYPE_WITH_CODE (ClutterDeviceManagerXI2,
clutter_device_manager_xi2,
CLUTTER_TYPE_DEVICE_MANAGER,
G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_EVENT_TRANSLATOR,
clutter_event_translator_iface_init));
static void
translate_valuator_class (Display *xdisplay,
ClutterInputDevice *device,
XIValuatorClassInfo *class)
{
static gboolean atoms_initialized = FALSE;
ClutterInputAxis axis, i;
if (G_UNLIKELY (!atoms_initialized))
{
XInternAtoms (xdisplay,
(char **) clutter_input_axis_atom_names, N_AXIS_ATOMS,
False,
clutter_input_axis_atoms);
atoms_initialized = TRUE;
}
for (i = CLUTTER_INPUT_AXIS_IGNORE;
i <= CLUTTER_INPUT_AXIS_WHEEL;
i += 1)
{
if (clutter_input_axis_atoms[i] == class->label)
{
axis = i;
break;
}
}
_clutter_input_device_add_axis (device, axis,
class->min,
class->max,
class->resolution);
CLUTTER_NOTE (BACKEND,
"Added axis '%s' (min:%.2f, max:%.2fd, res:%d) of device %d",
clutter_input_axis_atom_names[axis],
class->min,
class->max,
class->resolution,
device->id);
}
static void
translate_device_classes (Display *xdisplay,
ClutterInputDevice *device,
XIAnyClassInfo **classes,
guint n_classes)
{
gint i;
for (i = 0; i < n_classes; i++)
{
XIAnyClassInfo *class_info = classes[i];
switch (class_info->type)
{
case XIKeyClass:
{
XIKeyClassInfo *key_info = (XIKeyClassInfo *) class_info;
gint j;
_clutter_input_device_set_n_keys (device,
key_info->num_keycodes);
for (j = 0; j < key_info->num_keycodes; j++)
{
clutter_input_device_set_key (device, j,
key_info->keycodes[i],
0);
}
}
break;
case XIValuatorClass:
translate_valuator_class (xdisplay, device,
(XIValuatorClassInfo *) class_info);
break;
default:
break;
}
}
}
static ClutterInputDevice *
create_device (ClutterDeviceManagerXI2 *manager_xi2,
ClutterBackendX11 *backend_x11,
XIDeviceInfo *info)
{
ClutterInputDeviceType source;
ClutterInputDevice *retval;
ClutterInputMode mode;
gboolean is_enabled;
if (info->use == XIMasterKeyboard || info->use == XISlaveKeyboard)
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);
}
switch (info->use)
{
case XIMasterKeyboard:
case XIMasterPointer:
mode = CLUTTER_INPUT_MODE_MASTER;
is_enabled = TRUE;
break;
case XISlaveKeyboard:
case XISlavePointer:
mode = CLUTTER_INPUT_MODE_SLAVE;
is_enabled = FALSE;
break;
case XIFloatingSlave:
default:
mode = CLUTTER_INPUT_MODE_FLOATING;
is_enabled = FALSE;
break;
}
retval = g_object_new (CLUTTER_TYPE_INPUT_DEVICE_XI2,
"name", info->name,
"id", info->deviceid,
"has-cursor", (info->use == XIMasterPointer),
"device-manager", manager_xi2,
"device-type", source,
"device-mode", mode,
"backend", backend_x11,
"enabled", is_enabled,
NULL);
translate_device_classes (backend_x11->xdpy, retval,
info->classes,
info->num_classes);
CLUTTER_NOTE (BACKEND, "Created device '%s' (id: %d, has-cursor: %s)",
info->name,
info->deviceid,
info->use == XIMasterPointer ? "yes" : "no");
return retval;
}
static ClutterInputDevice *
add_device (ClutterDeviceManagerXI2 *manager_xi2,
ClutterBackendX11 *backend_x11,
XIDeviceInfo *info,
gboolean in_construction)
{
ClutterInputDevice *device;
device = create_device (manager_xi2, backend_x11, info);
/* we don't go through the DeviceManager::add_device() vfunc because
* that emits the signal, and we only do it conditionally
*/
g_hash_table_replace (manager_xi2->devices_by_id,
GINT_TO_POINTER (info->deviceid),
g_object_ref (device));
if (info->use == XIMasterPointer ||
info->use == XIMasterKeyboard)
{
manager_xi2->master_devices =
g_list_prepend (manager_xi2->master_devices, device);
}
else if (info->use == XISlavePointer ||
info->use == XISlaveKeyboard ||
info->use == XIFloatingSlave)
{
manager_xi2->slave_devices =
g_list_prepend (manager_xi2->slave_devices, device);
}
else
g_warning ("Unhandled device: %s",
clutter_input_device_get_device_name (device));
/* relationships between devices and signal emissions are not
* necessary while we're constructing the device manager instance
*/
if (!in_construction)
{
if (info->use == XISlavePointer || info->use == XISlaveKeyboard)
{
ClutterInputDevice *master;
master = g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (info->attachment));
_clutter_input_device_set_associated_device (device, master);
_clutter_input_device_add_slave (master, device);
}
/* blow the cache */
g_slist_free (manager_xi2->all_devices);
manager_xi2->all_devices = NULL;
g_signal_emit_by_name (manager_xi2, "device-added", device);
}
return device;
}
static void
remove_device (ClutterDeviceManagerXI2 *manager_xi2,
gint device_id)
{
ClutterInputDevice *device;
device = g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (device_id));
if (device != NULL)
{
manager_xi2->master_devices =
g_list_remove (manager_xi2->master_devices, device);
manager_xi2->slave_devices =
g_list_remove (manager_xi2->slave_devices, device);
/* blow the cache */
g_slist_free (manager_xi2->all_devices);
manager_xi2->all_devices = NULL;
g_signal_emit_by_name (manager_xi2, "device-removed", device);
g_object_run_dispose (G_OBJECT (device));
g_hash_table_remove (manager_xi2->devices_by_id,
GINT_TO_POINTER (device_id));
}
}
static void
translate_hierarchy_event (ClutterBackendX11 *backend_x11,
ClutterDeviceManagerXI2 *manager_xi2,
XIHierarchyEvent *ev)
{
ClutterInputDevice *device;
int i;
for (i = 0; i < ev->num_info; i++)
{
if (ev->info[i].flags & XIDeviceEnabled)
{
XIDeviceInfo *info;
int n_devices;
CLUTTER_NOTE (EVENT, "Hierarchy event: device enabled");
info = XIQueryDevice (backend_x11->xdpy,
ev->info[i].deviceid,
&n_devices);
device = add_device (manager_xi2, backend_x11, &info[0], FALSE);
}
else if (ev->info[i].flags & XIDeviceDisabled)
{
CLUTTER_NOTE (EVENT, "Hierarchy event: device disabled");
remove_device (manager_xi2, ev->info[i].deviceid);
}
else if ((ev->info[i].flags & XISlaveAttached) ||
(ev->info[i].flags & XISlaveDetached))
{
ClutterInputDevice *master, *slave;
XIDeviceInfo *info;
int n_devices;
CLUTTER_NOTE (EVENT, "Hierarchy event: slave %s",
(ev->info[i].flags & XISlaveAttached)
? "attached"
: "detached");
slave = g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (ev->info[i].deviceid));
master = clutter_input_device_get_associated_device (slave);
/* detach the slave in both cases */
if (master != NULL)
{
_clutter_input_device_remove_slave (master, slave);
_clutter_input_device_set_associated_device (slave, NULL);
}
/* and attach the slave to the new master if needed */
if (ev->info[i].flags & XISlaveAttached)
{
info = XIQueryDevice (backend_x11->xdpy,
ev->info[i].deviceid,
&n_devices);
master = g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (info->attachment));
_clutter_input_device_set_associated_device (slave, master);
_clutter_input_device_add_slave (master, slave);
XIFreeDeviceInfo (info);
}
}
}
}
static void
clutter_device_manager_xi2_select_events (ClutterDeviceManager *manager,
Window xwindow,
XIEventMask *event_mask)
{
Display *xdisplay;
xdisplay = clutter_x11_get_default_display ();
XISelectEvents (xdisplay, xwindow, event_mask, 1);
}
static ClutterStage *
get_event_stage (ClutterEventTranslator *translator,
XIEvent *xi_event)
{
Window xwindow = None;
switch (xi_event->evtype)
{
case XI_KeyPress:
case XI_KeyRelease:
case XI_ButtonPress:
case XI_ButtonRelease:
case XI_Motion:
{
XIDeviceEvent *xev = (XIDeviceEvent *) xi_event;
xwindow = xev->event;
}
break;
case XI_Enter:
case XI_Leave:
case XI_FocusIn:
case XI_FocusOut:
{
XIEnterEvent *xev = (XIEnterEvent *) xi_event;
xwindow = xev->event;
}
break;
default:
break;
}
if (xwindow == None)
return NULL;
return clutter_x11_get_stage_from_window (xwindow);
}
/*
* print_key_sym: Translate a symbol to its printable form if any
* @symbol: the symbol to translate
* @buffer: the buffer where to put the translated string
* @len: size of the buffer
*
* Translates @symbol into a printable representation in @buffer, if possible.
*
* Return value: The number of bytes of the translated string, 0 if the
* symbol can't be printed
*
* Note: The code is derived from libX11's src/KeyBind.c
* Copyright 1985, 1987, 1998 The Open Group
*
* Note: This code works for Latin-1 symbols. clutter_keysym_to_unicode()
* does the work for the other keysyms.
*/
static int
print_keysym (uint32_t symbol,
char *buffer,
int len)
{
unsigned long high_bytes;
unsigned char c;
high_bytes = symbol >> 8;
if (!(len &&
((high_bytes == 0) ||
((high_bytes == 0xFF) &&
(((symbol >= CLUTTER_KEY_BackSpace) &&
(symbol <= CLUTTER_KEY_Clear)) ||
(symbol == CLUTTER_KEY_Return) ||
(symbol == CLUTTER_KEY_Escape) ||
(symbol == CLUTTER_KEY_KP_Space) ||
(symbol == CLUTTER_KEY_KP_Tab) ||
(symbol == CLUTTER_KEY_KP_Enter) ||
((symbol >= CLUTTER_KEY_KP_Multiply) &&
(symbol <= CLUTTER_KEY_KP_9)) ||
(symbol == CLUTTER_KEY_KP_Equal) ||
(symbol == CLUTTER_KEY_Delete))))))
return 0;
/* if X keysym, convert to ascii by grabbing low 7 bits */
if (symbol == CLUTTER_KEY_KP_Space)
c = CLUTTER_KEY_space & 0x7F; /* patch encoding botch */
else if (high_bytes == 0xFF)
c = symbol & 0x7F;
else
c = symbol & 0xFF;
buffer[0] = c;
return 1;
}
static gdouble *
translate_axes (ClutterInputDevice *device,
gdouble x,
gdouble y,
ClutterStageX11 *stage_x11,
XIValuatorState *valuators)
{
guint n_axes = clutter_input_device_get_n_axes (device);
guint i;
gdouble *retval;
double *values;
retval = g_new0 (gdouble, n_axes);
values = valuators->values;
for (i = 0; i < valuators->mask_len * 8; i++)
{
ClutterInputAxis axis;
gdouble val;
if (!XIMaskIsSet (valuators->mask, i))
continue;
axis = clutter_input_device_get_axis (device, i);
val = *values++;
switch (axis)
{
case CLUTTER_INPUT_AXIS_X:
retval[i] = x;
break;
case CLUTTER_INPUT_AXIS_Y:
retval[i] = y;
break;
default:
_clutter_input_device_translate_axis (device, i, val, &retval[i]);
break;
}
}
return retval;
}
static ClutterTranslateReturn
clutter_device_manager_xi2_translate_event (ClutterEventTranslator *translator,
gpointer native,
ClutterEvent *event)
{
ClutterDeviceManagerXI2 *manager_xi2 = CLUTTER_DEVICE_MANAGER_XI2 (translator);
ClutterTranslateReturn retval = CLUTTER_TRANSLATE_CONTINUE;
ClutterBackendX11 *backend_x11;
ClutterStageX11 *stage_x11 = NULL;
ClutterStage *stage = NULL;
ClutterInputDevice *device, *source_device;
XGenericEventCookie *cookie;
XIEvent *xi_event;
XEvent *xevent;
backend_x11 = CLUTTER_BACKEND_X11 (clutter_get_default_backend ());
xevent = native;
cookie = &xevent->xcookie;
if (!XGetEventData (backend_x11->xdpy, cookie))
return CLUTTER_TRANSLATE_CONTINUE;
if (cookie->type != GenericEvent ||
cookie->extension != manager_xi2->opcode)
{
XFreeEventData (backend_x11->xdpy, cookie);
return CLUTTER_TRANSLATE_CONTINUE;
}
xi_event = (XIEvent *) cookie->data;
if (!(xi_event->evtype == XI_HierarchyChanged ||
xi_event->evtype == XI_DeviceChanged))
{
stage = get_event_stage (translator, xi_event);
if (stage == NULL || CLUTTER_ACTOR_IN_DESTRUCTION (stage))
{
XFreeEventData (backend_x11->xdpy, cookie);
return CLUTTER_TRANSLATE_CONTINUE;
}
else
stage_x11 = CLUTTER_STAGE_X11 (_clutter_stage_get_window (stage));
}
event->any.stage = stage;
switch (xi_event->evtype)
{
case XI_HierarchyChanged:
{
XIHierarchyEvent *xev = (XIHierarchyEvent *) xi_event;
translate_hierarchy_event (backend_x11, manager_xi2, xev);
}
retval = CLUTTER_TRANSLATE_REMOVE;
break;
case XI_DeviceChanged:
{
XIDeviceChangedEvent *xev = (XIDeviceChangedEvent *) xi_event;
device = g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (xev->deviceid));
_clutter_input_device_reset_axes (device);
translate_device_classes (backend_x11->xdpy,
device,
xev->classes,
xev->num_classes);
}
retval = CLUTTER_TRANSLATE_REMOVE;
break;
case XI_KeyPress:
case XI_KeyRelease:
{
XIDeviceEvent *xev = (XIDeviceEvent *) xi_event;
ClutterEventX11 *event_x11;
char buffer[7] = { 0, };
gunichar n;
event->key.type = event->type = (xev->evtype == XI_KeyPress)
? CLUTTER_KEY_PRESS
: CLUTTER_KEY_RELEASE;
event->key.time = xev->time;
event->key.stage = stage;
event->key.modifier_state =
_clutter_input_device_xi2_translate_state (&xev->mods, &xev->buttons);
event->key.hardware_keycode = xev->detail;
/* 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);
/* KeyEvents have platform specific data associated to them */
event_x11 = _clutter_event_x11_new ();
_clutter_event_set_platform_data (event, event_x11);
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);
source_device = g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (xev->sourceid));
_clutter_event_set_source_device (event, source_device);
device = g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (xev->deviceid));
_clutter_event_set_device (event, device);
/* XXX keep this in sync with the evdev device manager */
n = print_keysym (event->key.keyval, buffer, sizeof (buffer));
if (n == 0)
{
/* not printable */
event->key.unicode_value = (gunichar) '\0';
}
else
{
event->key.unicode_value = g_utf8_get_char_validated (buffer, n);
if (event->key.unicode_value == -1 ||
event->key.unicode_value == -2)
event->key.unicode_value = (gunichar) '\0';
}
CLUTTER_NOTE (EVENT,
"%s: win:0x%x device:%d source:%d, key: %12s (%d)",
event->any.type == CLUTTER_KEY_PRESS
? "key press "
: "key release",
(unsigned int) stage_x11->xwin,
xev->deviceid,
xev->sourceid,
event->key.keyval ? buffer : "(none)",
event->key.keyval);
if (xi_event->evtype == XI_KeyPress)
_clutter_stage_x11_set_user_time (stage_x11, event->key.time);
retval = CLUTTER_TRANSLATE_QUEUE;
}
break;
case XI_ButtonPress:
case XI_ButtonRelease:
{
XIDeviceEvent *xev = (XIDeviceEvent *) xi_event;
switch (xev->detail)
{
case 4:
case 5:
case 6:
case 7:
event->scroll.type = event->type = CLUTTER_SCROLL;
if (xev->detail == 4)
event->scroll.direction = CLUTTER_SCROLL_UP;
else if (xev->detail == 5)
event->scroll.direction = CLUTTER_SCROLL_DOWN;
else if (xev->detail == 6)
event->scroll.direction = CLUTTER_SCROLL_LEFT;
else
event->scroll.direction = CLUTTER_SCROLL_RIGHT;
event->scroll.stage = stage;
event->scroll.time = xev->time;
event->scroll.x = xev->event_x;
event->scroll.y = xev->event_y;
event->scroll.modifier_state =
_clutter_input_device_xi2_translate_state (&xev->mods,
&xev->buttons);
source_device = g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (xev->sourceid));
_clutter_event_set_source_device (event, source_device);
device = g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (xev->deviceid));
_clutter_event_set_device (event, device);
event->scroll.axes = translate_axes (event->scroll.device,
event->scroll.x,
event->scroll.y,
stage_x11,
&xev->valuators);
break;
default:
event->button.type = event->type =
(xi_event->evtype == XI_ButtonPress) ? CLUTTER_BUTTON_PRESS
: CLUTTER_BUTTON_RELEASE;
event->button.stage = stage;
event->button.time = xev->time;
event->button.x = xev->event_x;
event->button.y = xev->event_y;
event->button.button = xev->detail;
event->button.modifier_state =
_clutter_input_device_xi2_translate_state (&xev->mods,
&xev->buttons);
source_device = g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (xev->sourceid));
_clutter_event_set_source_device (event, source_device);
device = g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (xev->deviceid));
_clutter_event_set_device (event, device);
event->button.axes = translate_axes (event->button.device,
event->button.x,
event->button.y,
stage_x11,
&xev->valuators);
break;
}
if (source_device != NULL && device->stage != NULL)
_clutter_input_device_set_stage (source_device, device->stage);
CLUTTER_NOTE (EVENT,
"%s: win:0x%x, device:%s (button:%d, x:%.2f, y:%.2f, axes:%s)",
event->any.type == CLUTTER_BUTTON_PRESS
? "button press "
: "button release",
(unsigned int) stage_x11->xwin,
event->button.device->device_name,
event->button.button,
event->button.x,
event->button.y,
event->button.axes != NULL ? "yes" : "no");
if (xi_event->evtype == XI_ButtonPress)
_clutter_stage_x11_set_user_time (stage_x11, event->button.time);
retval = CLUTTER_TRANSLATE_QUEUE;
}
break;
case XI_Motion:
{
XIDeviceEvent *xev = (XIDeviceEvent *) xi_event;
event->motion.type = event->type = CLUTTER_MOTION;
event->motion.stage = stage;
event->motion.time = xev->time;
event->motion.x = xev->event_x;
event->motion.y = xev->event_y;
event->motion.modifier_state =
_clutter_input_device_xi2_translate_state (&xev->mods,
&xev->buttons);
source_device = g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (xev->sourceid));
_clutter_event_set_source_device (event, source_device);
device = g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (xev->deviceid));
_clutter_event_set_device (event, device);
event->motion.axes = translate_axes (event->motion.device,
event->motion.x,
event->motion.y,
stage_x11,
&xev->valuators);
if (source_device != NULL && device->stage != NULL)
_clutter_input_device_set_stage (source_device, device->stage);
CLUTTER_NOTE (EVENT, "motion: win:0x%x device:%s (x:%.2f, y:%.2f, axes:%s)",
(unsigned int) stage_x11->xwin,
event->motion.device->device_name,
event->motion.x,
event->motion.y,
event->motion.axes != NULL ? "yes" : "no");
retval = CLUTTER_TRANSLATE_QUEUE;
}
break;
case XI_Enter:
case XI_Leave:
{
XIEnterEvent *xev = (XIEnterEvent *) xi_event;
device = g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (xev->deviceid));
source_device = g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (xev->sourceid));
if (xi_event->evtype == XI_Enter)
{
event->crossing.type = event->type = CLUTTER_ENTER;
event->crossing.stage = stage;
event->crossing.source = CLUTTER_ACTOR (stage);
event->crossing.related = NULL;
event->crossing.time = xev->time;
event->crossing.x = xev->event_x;
event->crossing.y = xev->event_y;
_clutter_stage_add_device (stage, device);
}
else
{
if (device->stage == NULL)
{
CLUTTER_NOTE (EVENT,
"Discarding Leave for ButtonRelease "
"event off-stage");
retval = CLUTTER_TRANSLATE_REMOVE;
break;
}
event->crossing.type = event->type = CLUTTER_LEAVE;
event->crossing.stage = stage;
event->crossing.source = CLUTTER_ACTOR (stage);
event->crossing.related = NULL;
event->crossing.time = xev->time;
event->crossing.x = xev->event_x;
event->crossing.y = xev->event_y;
_clutter_stage_remove_device (stage, device);
}
clutter_event_set_device (event, device);
_clutter_event_set_source_device (event, source_device);
retval = CLUTTER_TRANSLATE_QUEUE;
}
break;
case XI_FocusIn:
case XI_FocusOut:
retval = CLUTTER_TRANSLATE_CONTINUE;
break;
}
XFreeEventData (backend_x11->xdpy, cookie);
return retval;
}
static void
clutter_event_translator_iface_init (ClutterEventTranslatorIface *iface)
{
iface->translate_event = clutter_device_manager_xi2_translate_event;
}
static void
clutter_device_manager_xi2_add_device (ClutterDeviceManager *manager,
ClutterInputDevice *device)
{
/* XXX implement */
}
static void
clutter_device_manager_xi2_remove_device (ClutterDeviceManager *manager,
ClutterInputDevice *device)
{
/* XXX implement */
}
static const GSList *
clutter_device_manager_xi2_get_devices (ClutterDeviceManager *manager)
{
ClutterDeviceManagerXI2 *manager_xi2 = CLUTTER_DEVICE_MANAGER_XI2 (manager);
GSList *all_devices = NULL;
GList *l;
if (manager_xi2->all_devices != NULL)
return manager_xi2->all_devices;
for (l = manager_xi2->master_devices; l != NULL; l = l->next)
all_devices = g_slist_prepend (all_devices, l->data);
for (l = manager_xi2->slave_devices; l != NULL; l = l->next)
all_devices = g_slist_prepend (all_devices, l->data);
manager_xi2->all_devices = g_slist_reverse (all_devices);
return manager_xi2->all_devices;
}
static ClutterInputDevice *
clutter_device_manager_xi2_get_device (ClutterDeviceManager *manager,
gint id)
{
ClutterDeviceManagerXI2 *manager_xi2 = CLUTTER_DEVICE_MANAGER_XI2 (manager);
return g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (id));
}
static ClutterInputDevice *
clutter_device_manager_xi2_get_core_device (ClutterDeviceManager *manager,
ClutterInputDeviceType device_type)
{
ClutterDeviceManagerXI2 *manager_xi2 = CLUTTER_DEVICE_MANAGER_XI2 (manager);
ClutterBackendX11 *backend_x11;
ClutterInputDevice *device;
int device_id;
backend_x11 =
CLUTTER_BACKEND_X11 (_clutter_device_manager_get_backend (manager));
XIGetClientPointer (backend_x11->xdpy, None, &device_id);
device = g_hash_table_lookup (manager_xi2->devices_by_id,
GINT_TO_POINTER (device_id));
switch (device_type)
{
case CLUTTER_POINTER_DEVICE:
return device;
case CLUTTER_KEYBOARD_DEVICE:
return clutter_input_device_get_associated_device (device);
default:
break;
}
return NULL;
}
static void
relate_masters (gpointer key,
gpointer value,
gpointer data)
{
ClutterDeviceManagerXI2 *manager_xi2 = data;
ClutterInputDevice *device, *relative;
device = g_hash_table_lookup (manager_xi2->devices_by_id, key);
relative = g_hash_table_lookup (manager_xi2->devices_by_id, value);
_clutter_input_device_set_associated_device (device, relative);
_clutter_input_device_set_associated_device (relative, device);
}
static void
relate_slaves (gpointer key,
gpointer value,
gpointer data)
{
ClutterDeviceManagerXI2 *manager_xi2 = data;
ClutterInputDevice *master, *slave;
master = g_hash_table_lookup (manager_xi2->devices_by_id, key);
slave = g_hash_table_lookup (manager_xi2->devices_by_id, value);
_clutter_input_device_set_associated_device (slave, master);
_clutter_input_device_add_slave (master, slave);
}
static void
clutter_device_manager_xi2_constructed (GObject *gobject)
{
ClutterDeviceManagerXI2 *manager_xi2 = CLUTTER_DEVICE_MANAGER_XI2 (gobject);
ClutterDeviceManager *manager = CLUTTER_DEVICE_MANAGER (gobject);
ClutterBackendX11 *backend_x11;
GHashTable *masters, *slaves;
XIDeviceInfo *info;
XIEventMask event_mask;
unsigned char mask[2] = { 0, };
int n_devices, i;
backend_x11 =
CLUTTER_BACKEND_X11 (_clutter_device_manager_get_backend (manager));
masters = g_hash_table_new (NULL, NULL);
slaves = g_hash_table_new (NULL, NULL);
info = XIQueryDevice (backend_x11->xdpy, XIAllDevices, &n_devices);
for (i = 0; i < n_devices; i++)
{
XIDeviceInfo *xi_device = &info[i];
ClutterInputDevice *device;
device = add_device (manager_xi2, backend_x11, xi_device, TRUE);
if (xi_device->use == XIMasterPointer ||
xi_device->use == XIMasterKeyboard)
{
g_hash_table_insert (masters,
GINT_TO_POINTER (xi_device->deviceid),
GINT_TO_POINTER (xi_device->attachment));
}
else if (xi_device->use == XISlavePointer ||
xi_device->use == XISlaveKeyboard)
{
g_hash_table_insert (slaves,
GINT_TO_POINTER (xi_device->deviceid),
GINT_TO_POINTER (xi_device->attachment));
}
}
XIFreeDeviceInfo (info);
g_hash_table_foreach (masters, relate_masters, manager_xi2);
g_hash_table_destroy (masters);
g_hash_table_foreach (slaves, relate_slaves, manager_xi2);
g_hash_table_destroy (slaves);
XISetMask (mask, XI_HierarchyChanged);
XISetMask (mask, XI_DeviceChanged);
event_mask.deviceid = XIAllDevices;
event_mask.mask_len = sizeof (mask);
event_mask.mask = mask;
clutter_device_manager_xi2_select_events (manager,
clutter_x11_get_root_window (),
&event_mask);
if (G_OBJECT_CLASS (clutter_device_manager_xi2_parent_class)->constructed)
G_OBJECT_CLASS (clutter_device_manager_xi2_parent_class)->constructed (gobject);
}
static void
clutter_device_manager_xi2_set_property (GObject *gobject,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
ClutterDeviceManagerXI2 *manager_xi2 = CLUTTER_DEVICE_MANAGER_XI2 (gobject);
switch (prop_id)
{
case PROP_OPCODE:
manager_xi2->opcode = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
clutter_device_manager_xi2_class_init (ClutterDeviceManagerXI2Class *klass)
{
ClutterDeviceManagerClass *manager_class;
GObjectClass *gobject_class;
obj_props[PROP_OPCODE] =
g_param_spec_int ("opcode",
"Opcode",
"The XI2 opcode",
-1, G_MAXINT,
-1,
CLUTTER_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY);
gobject_class = G_OBJECT_CLASS (klass);
gobject_class->constructed = clutter_device_manager_xi2_constructed;
gobject_class->set_property = clutter_device_manager_xi2_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_xi2_add_device;
manager_class->remove_device = clutter_device_manager_xi2_remove_device;
manager_class->get_devices = clutter_device_manager_xi2_get_devices;
manager_class->get_core_device = clutter_device_manager_xi2_get_core_device;
manager_class->get_device = clutter_device_manager_xi2_get_device;
}
static void
clutter_device_manager_xi2_init (ClutterDeviceManagerXI2 *self)
{
self->devices_by_id = g_hash_table_new_full (NULL, NULL,
NULL,
(GDestroyNotify) g_object_unref);
}
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