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mutter/clutter/x11/clutter-device-manager-xi2.c
Carlos Garnacho 075a4ed86c x11: Improve XGenericEventCookie data allocation 
https://bugzilla.gnome.org/show_bug.cgi?id=654656

Clutter may be used together with GTK+, which indirectly may use
XInput2 too, so the cookie data must persist when both are handling
events.

What happens now in a nutshell is, Clutter is only guaranteed to allocate
the cookie itself after XNextEvent(), and only frees the cookie if its
XGetEventData() call allocated the cookie data.

The X[Get|Free]EventData() calls happen now in clutter-event-x11.c as
hypothetically different event translators could also handle other set
of X Generic Events, or other libraries handling events for that matter.
2011-07-15 13:46:33 +02:00

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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-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 i, axis = CLUTTER_INPUT_AXIS_IGNORE;
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)
{
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);
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 (cookie->type != GenericEvent ||
cookie->extension != manager_xi2->opcode)
return CLUTTER_TRANSLATE_CONTINUE;
xi_event = (XIEvent *) cookie->data;
if (!xi_event)
return CLUTTER_TRANSLATE_REMOVE;
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))
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;
}
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];
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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