brl/mutter
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Port the X11 backend to the Device Manager

Browse Source 
Use the device manager to store the input devices. Also, provide
two fallback devices when initializing the X11 backend: device 0
for the pointer and device 1 for the keyboard.
This commit is contained in:
Emmanuele Bassi 2009-11-20 15:36:43 +00:00
parent d34f1aa775
commit 3027d4327a
5 changed files with 257 additions and 275 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
clutter/clutter-private.h
View File

@ -153,9 +153,6 @@ struct _ClutterMainContext
PangoContext *pango_context; /* Global Pango context */
CoglPangoFontMap *font_map; /* Global font map */
GSList *input_devices; /* For extra input devices, i.e
MultiTouch */
ClutterEvent *current_event;
guint32 last_event_time;

516
clutter/x11/clutter-backend-x11.c
View File

@ -46,15 +46,17 @@
#include <X11/extensions/XInput.h>
#endif
#include "cogl/cogl.h"
#include "../clutter-debug.h"
#include "../clutter-device-manager.h"
#include "../clutter-event.h"
#include "../clutter-main.h"
#include "../clutter-debug.h"
#include "../clutter-private.h"
#include "cogl/cogl.h"
G_DEFINE_TYPE (ClutterBackendX11, clutter_backend_x11, CLUTTER_TYPE_BACKEND);
/* a specific X11 input device */
struct _ClutterX11XInputDevice
{
ClutterInputDevice device;
@ -66,11 +68,6 @@ struct _ClutterX11XInputDevice
#endif
};
#ifdef HAVE_XINPUT
void _clutter_x11_register_xinput ();
#endif
/* atoms; remember to add the code that assigns the atom value to
* the member of the ClutterBackendX11 structure if you add an
* atom name here. do not change the order!
@ -109,6 +106,222 @@ static gboolean clutter_synchronise = FALSE;
static int TrappedErrorCode = 0;
static int (* old_error_handler) (Display *, XErrorEvent *);
static void
clutter_x11_register_input_devices (ClutterBackendX11 *backend)
{
ClutterDeviceManager *manager;
gboolean have_an_xpointer = FALSE;
#ifdef HAVE_XINPUT
XDeviceInfo *x_devices = NULL;
int res, opcode, event, error;
int i, n_devices;
GSList *devices = NULL;
#endif /* HAVE_XINPUT */
manager = clutter_device_manager_get_default ();
if (!clutter_enable_xinput)
{
CLUTTER_NOTE (BACKEND, "XInput support not enabled");
goto default_device;
}
#ifdef HAVE_XINPUT
res = XQueryExtension (backend->xdpy, "XInputExtension",
&opcode,
&event,
&error);
if (!res)
{
CLUTTER_NOTE (BACKEND, "No XInput extension available");
goto default_device;
}
x_devices = XListInputDevices (backend->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;
CLUTTER_NOTE (BACKEND,
"Considering device %li with type %d, %d of %d",
info->id,
info->use,
i, n_devices);
/* we only want 'raw' devices, not virtual ones */
if (info->use == IsXExtensionPointer ||
/* info->use == IsXExtensionKeyboard || XInput1 is broken */
info->use == IsXExtensionDevice)
{
ClutterInputDevice *device;
XDevice *x_device;
int n_events = 0;
int j;
clutter_x11_trap_x_errors ();
x_device = XOpenDevice (backend->xdpy, info->id);
if (clutter_x11_untrap_x_errors () || x_device == NULL)
{
CLUTTER_NOTE (BACKEND, "Unable to open device %li", info->id);
continue;
}
device = g_slice_new0 (ClutterX11XInputDevice);
device->device.id = info->id;
device->device.click_count = 0;
device->device.previous_time = CLUTTER_CURRENT_TIME;
device->device.previous_x = -1;
device->device.previous_y = -1;
device->device.previous_button_number = -1;
switch (info->use)
{
case IsXExtensionPointer:
device->device.device_type = CLUTTER_POINTER_DEVICE;
have_an_xpointer = TRUE;
break;
#if 0
/* XInput1 is broken for keyboards */
case IsXExtensionKeyboard:
device->device.device_type = CLUTTER_KEYBOARD_DEVICE;
break;
#endif
case IsXExtensionDevice:
device->device.device_type = CLUTTER_EXTENSION_DEVICE;
break;
}
device->xdevice = x_device;
CLUTTER_NOTE (BACKEND, "Registering XINPUT device with XID: %li",
x_device->device_id);
/* We must go through all the classes supported by this device and
* register the appropriate events we want. Each class only appears
* once. We need to store the types with the stage since they are
* created dynamically by the server. They are not device specific.
*/
for (j = 0; j < xdevice->num_classes; j++)
{
XInputClassInfo *xclass_info = xdevice->classes + j;
switch (xclass_info->input_class)
{
#if 0
/* XInput 1.x is broken for keyboards: */
case KeyClass:
DeviceKeyPress (xdevice,
x11b->event_types[CLUTTER_X11_XINPUT_KEY_PRESS_EVENT],
device->xevent_list [num_events]);
n_events++;
DeviceKeyRelease (xdevice,
x11b->event_types[CLUTTER_X11_XINPUT_KEY_RELEASE_EVENT],
device->xevent_list [num_events]);
n_events++;
break;
#endif
case ButtonClass:
DeviceButtonPress (xdevice,
x11b->event_types[CLUTTER_X11_XINPUT_BUTTON_PRESS_EVENT],
device->xevent_list [num_events]);
n_events++;
DeviceButtonRelease (xdevice,
x11b->event_types[CLUTTER_X11_XINPUT_BUTTON_RELEASE_EVENT],
device->xevent_list [num_events]);
n_events++;
break;
case ValuatorClass:
DeviceMotionNotify (xdevice,
x11b->event_types[CLUTTER_X11_XINPUT_MOTION_NOTIFY_EVENT],
device->xevent_list [num_events]);
n_events++;
break;
}
}
if (info->use == IsXExtensionPointer && num_events > 0)
have_an_xpointer = TRUE;
device->num_events = n_events;
/* add it to a temporary list; we don't add the device
* straight to the device manager because the XInput
* initialization might still fail
*/
devices = g_slist_prepend (devices, device);
}
}
XFree (x_devices);
devices = g_slist_reverse (devices);
if (have_an_xpointer)
{
GSList *l;
for (l = devices; l != NULL; l = l->next)
_clutter_device_manager_add_device (manager, l->data);
}
else
{
GSList *l;
g_warning ("No usable XInput pointer devices found");
for (l = devices; l != NULL; l = l->next)
g_slice_free (ClutterX11XInputDevice, l->data);
}
g_slist_free (devices);
backend->have_xinput = TRUE;
#endif /* HAVE_XINPUT */
default_device:
/* fallback code in case:
*
* - we do not have XInput support compiled in
* - we do not have XInput support enabled
* - we do not have the XInput extension
* - we do not have a XInput pointer device
*
* we register two default devices, one for the pointer
* and one for the keyboard
*/
if (!have_an_xpointer)
{
ClutterInputDevice *d;
d = g_slice_new0 (ClutterInputDevice);
d->id = 0;
d->device_type = CLUTTER_POINTER_DEVICE;
d->click_count = 0;
d->previous_time = CLUTTER_CURRENT_TIME;
d->previous_x = -1;
d->previous_y = -1;
d->previous_button_number = -1;
_clutter_device_manager_add_device (manager, d);
d = g_slice_new0 (ClutterInputDevice);
d->id = 1;
d->device_type = CLUTTER_KEYBOARD_DEVICE;
_clutter_device_manager_add_device (manager, d);
}
}
gboolean
clutter_backend_x11_pre_parse (ClutterBackend *backend,
GError **error)
@ -199,9 +412,8 @@ clutter_backend_x11_post_parse (ClutterBackend *backend,
clutter_backend_set_resolution (backend, dpi);
#ifdef HAVE_XINPUT
_clutter_x11_register_xinput ();
#endif
/* register input devices */
clutter_x11_register_input_devices (backend_x11);
if (clutter_synchronise)
XSynchronize (backend_x11->xdpy, True);
@ -644,234 +856,27 @@ clutter_x11_remove_filter (ClutterX11FilterFunc func,
}
}
void
_clutter_x11_register_xinput ()
{
#ifdef HAVE_XINPUT
XDeviceInfo *xdevices = NULL;
XDeviceInfo *info = NULL;
XDevice *xdevice = NULL;
XInputClassInfo *xclass_info = NULL;
gint opcode, event, error;
gint res;
gint num_devices = 0;
gint num_events = 0;
gint i = 0, j = 0;
gboolean have_an_xpointer = FALSE;
ClutterBackendX11 *x11b;
ClutterX11XInputDevice *device = NULL;
ClutterMainContext *context;
GSList *input_devices = NULL;
if (!backend_singleton)
{
g_critical ("X11 backend has not been initialised");
return;
}
if (!clutter_enable_xinput)
{
CLUTTER_NOTE (BACKEND, "Not enabling XInput");
return;
}
context = _clutter_context_get_default ();
backend_singleton->have_xinput = FALSE;
/* is the XInput extension available? */
res = XQueryExtension (backend_singleton->xdpy, "XInputExtension",
&opcode, &event,
&error);
if (!res)
{
CLUTTER_NOTE (BACKEND, "X Input extension not available");
return;
}
x11b = backend_singleton;
xdevices = XListInputDevices (x11b->xdpy, &num_devices);
CLUTTER_NOTE (BACKEND, "%d XINPUT devices found", num_devices);
if (num_devices == 0)
return;
for (i = 0; i < num_devices; i++)
{
info = xdevices + i;
num_events = 0;
CLUTTER_NOTE (BACKEND, "Considering %li with type %d",
info->id,
info->use);
/* Only want 'raw' devices themselves not virtual ones */
if (info->use == IsXExtensionPointer ||
/*info->use == IsXExtensionKeyboard || XInput 1.x is broken */
info->use == IsXExtensionDevice)
{
clutter_x11_trap_x_errors ();
xdevice = XOpenDevice (backend_singleton->xdpy, info->id);
if (clutter_x11_untrap_x_errors () || xdevice == NULL)
continue;
/* Create the appropriate Clutter device */
device = g_slice_new0 (ClutterX11XInputDevice);
device->device.id = info->id;
switch (info->use)
{
case IsXExtensionPointer:
device->device.device_type = CLUTTER_POINTER_DEVICE;
have_an_xpointer = TRUE;
break;
#if 0
/* XInput 1.x is broken for keyboards: */
case IsXExtensionKeyboard:
device->device.type = CLUTTER_KEYBOARD_DEVICE;
break;
#endif
case IsXExtensionDevice:
device->device.device_type = CLUTTER_EXTENSION_DEVICE;
break;
}
/* FIXME: some kind of general device_init() call should do below */
device->device.click_count = 0;
device->device.previous_time = 0;
device->device.previous_x = -1;
device->device.previous_y = -1;
device->device.previous_button_number = -1;
device->num_events = 0;
device->xdevice = xdevice;
CLUTTER_NOTE (BACKEND, "Registering XINPUT device with XID: %li",
xdevice->device_id);
/* We must go through all the classes supported by this device and
* register the appropriate events we want. Each class only appears
* once. We need to store the types with the stage since they are
* created dynamically by the server. They are not device specific.
*/
for (j = 0; j < xdevice->num_classes; j++)
{
xclass_info = xdevice->classes + j;
switch (xclass_info->input_class)
{
#if 0
/* XInput 1.x is broken for keyboards: */
case KeyClass:
DeviceKeyPress (xdevice,
x11b->event_types[CLUTTER_X11_XINPUT_KEY_PRESS_EVENT],
device->xevent_list [num_events]);
num_events++;
DeviceKeyRelease (xdevice,
x11b->event_types[CLUTTER_X11_XINPUT_KEY_RELEASE_EVENT],
device->xevent_list [num_events]);
num_events++;
break;
#endif
case ButtonClass:
DeviceButtonPress (xdevice,
x11b->event_types[CLUTTER_X11_XINPUT_BUTTON_PRESS_EVENT],
device->xevent_list [num_events]);
num_events++;
DeviceButtonRelease (xdevice,
x11b->event_types[CLUTTER_X11_XINPUT_BUTTON_RELEASE_EVENT],
device->xevent_list [num_events]);
num_events++;
break;
case ValuatorClass:
DeviceMotionNotify (xdevice,
x11b->event_types[CLUTTER_X11_XINPUT_MOTION_NOTIFY_EVENT],
device->xevent_list [num_events]);
num_events++;
break;
}
}
if (info->use == IsXExtensionPointer && num_events > 0)
have_an_xpointer = TRUE;
device->num_events = num_events;
input_devices = g_slist_prepend (input_devices, device);
}
}
XFree (xdevices);
if (!have_an_xpointer)
{
GSList *l;
/* Something is likely wrong with Xinput setup so we basically
* abort here and fall back to lofi regular xinput.
*/
g_warning ("No usuable XInput pointing devices found");
for (l = input_devices; l != NULL; l = l->next)
g_slice_free (ClutterX11XInputDevice, l->data);
g_slist_free (input_devices);
context->input_devices = NULL;
return;
}
/* store the list of input devices */
context->input_devices = g_slist_reverse (input_devices);
/* why yes, we are awesome */
backend_singleton->have_xinput = TRUE;
#endif /* HAVE_XINPUT */
}
void
_clutter_x11_unregister_xinput ()
{
}
void
_clutter_x11_select_events (Window xwin)
{
#ifdef HAVE_XINPUT
GSList *list_it;
ClutterX11XInputDevice *device = NULL;
ClutterDeviceManager *manager;
const GSList *l;
ClutterMainContext *context;
context = _clutter_context_get_default ();
if (!backend_singleton)
if (G_UNLIKELY (backend_singleton == NULL))
{
g_critical ("X11 backend has not been initialised");
return;
}
for (list_it = context->input_devices;
list_it != NULL;
list_it = list_it->next)
manager = clutter_device_manager_get_default ();
for (l = clutter_device_manager_peek_devices (manager);
l != NULL;
l = l->next)
{
device = (ClutterX11XInputDevice *)list_it->data;
ClutterX11XInputDevice *device = l->data;
XSelectExtensionEvent (backend_singleton->xdpy,
xwin,
@ -884,49 +889,34 @@ _clutter_x11_select_events (Window xwin)
ClutterInputDevice *
_clutter_x11_get_device_for_xid (XID id)
{
#ifdef HAVE_XINPUT
ClutterMainContext *context;
GSList *l;
ClutterDeviceManager *manager;
context = _clutter_context_get_default ();
manager = clutter_device_manager_get_default ();
if (!backend_singleton)
{
g_critical ("X11 backend has not been initialised");
return NULL;
return clutter_device_manager_get_device (manager, (gint) id);
}
for (l = context->input_devices; l != NULL; l = l->next)
{
ClutterX11XInputDevice *device = l->data;
if (device->xdevice->device_id == id)
return (ClutterInputDevice *) device;
}
#endif /* HAVE_XINPUT */
return NULL;
}
/* FIXME: This nasty little func needs moving elsewhere.. */
/**
* clutter_x11_get_input_devices:
*
* Retrieves a pointer to the list of input devices
*
* Deprecated: 1.2: Use clutter_device_manager_peek_devices() instead
*
* Since: 0.8
*
* Return value: a pointer to the internal list of input devices; the
* returned list is owned by Clutter and should not be modified or
* freed
*/
G_CONST_RETURN GSList *
clutter_x11_get_input_devices (void)
{
#ifdef HAVE_XINPUT
ClutterMainContext *context;
ClutterDeviceManager *manager;
if (!backend_singleton)
{
g_critical ("X11 backend has not been initialised");
return NULL;
}
manager = clutter_device_manager_get_default ();
context = _clutter_context_get_default ();
return context->input_devices;
#else /* !HAVE_XINPUT */
return NULL;
#endif /* HAVE_XINPUT */
return clutter_device_manager_peek_devices (manager);
}
/**
@ -943,7 +933,7 @@ gboolean
clutter_x11_has_xinput (void)
{
#ifdef HAVE_XINPUT
if (!backend_singleton)
if (backend_singleton == NULL)
{
g_critical ("X11 backend has not been initialised");
return FALSE;

6
clutter/x11/clutter-backend-x11.h
View File

@ -125,12 +125,6 @@ clutter_backend_x11_get_features (ClutterBackend *backend);
XVisualInfo *
clutter_backend_x11_get_visual_info (ClutterBackendX11 *backend_x11);
void
_clutter_x11_register_xinput (void);
void
_clutter_x11_unregister_xinput (void);
ClutterInputDevice *
_clutter_x11_get_device_for_xid (XID id);

3
clutter/x11/clutter-event-x11.c
View File

@ -696,8 +696,8 @@ event_translate (ClutterBackend *backend,
event->scroll.x = xevent->xbutton.x;
event->scroll.y = xevent->xbutton.y;
event->scroll.modifier_state = xevent->xbutton.state;
break;
default:
event->button.type = event->type = CLUTTER_BUTTON_PRESS;
event->button.time = xevent->xbutton.time;
@ -705,7 +705,6 @@ event_translate (ClutterBackend *backend,
event->button.y = xevent->xbutton.y;
event->button.modifier_state = xevent->xbutton.state;
event->button.button = xevent->xbutton.button;
break;
}

2
clutter/x11/clutter-x11.h
View File

@ -121,7 +121,9 @@ gboolean clutter_x11_has_event_retrieval (void);
ClutterStage *clutter_x11_get_stage_from_window (Window win);
#ifndef CLUTTER_DISABLE_DEPRECATED
G_CONST_RETURN GSList* clutter_x11_get_input_devices (void);
#endif
void clutter_x11_enable_xinput (void);
gboolean clutter_x11_has_xinput (void);