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Add gdk_event_[gs]et_source_device().

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This function may be used to know the hardware device that triggered
an event, it could resort to the master device in the few cases there's
not a direct hardware device to relate to the event (i.e.: crossing events
due to grabs)
This commit is contained in:
Carlos Garnacho 2010-12-13 02:12:43 +01:00
parent c4a5c2ed4b
commit f5a20ab65a
8 changed files with 144 additions and 33 deletions
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19
gdk/gdkdisplay.c
View File

@ -1302,6 +1302,7 @@ _gdk_display_add_device_grab (GdkDisplay *display,
static void
synthesize_crossing_events (GdkDisplay *display,
GdkDevice *device,
GdkDevice *source_device,
GdkWindow *src_window,
GdkWindow *dest_window,
GdkCrossingMode crossing_mode,
@ -1337,7 +1338,7 @@ synthesize_crossing_events (GdkDisplay *display,
_gdk_synthesize_crossing_events (display,
src_window,
dest_window,
device,
device, source_device,
crossing_mode,
x, y, state,
time,
@ -1351,7 +1352,7 @@ synthesize_crossing_events (GdkDisplay *display,
_gdk_synthesize_crossing_events (display,
src_window,
NULL,
device,
device, source_device,
crossing_mode,
x, y, state,
time,
@ -1366,7 +1367,7 @@ synthesize_crossing_events (GdkDisplay *display,
_gdk_synthesize_crossing_events (display,
src_window,
NULL,
device,
device, source_device,
crossing_mode,
x, y, state,
time,
@ -1377,7 +1378,7 @@ synthesize_crossing_events (GdkDisplay *display,
_gdk_synthesize_crossing_events (display,
NULL,
dest_window,
device,
device, source_device,
crossing_mode,
x, y, state,
time,
@ -1414,6 +1415,7 @@ get_current_toplevel (GdkDisplay *display,
static void
switch_to_pointer_grab (GdkDisplay *display,
GdkDevice *device,
GdkDevice *source_device,
GdkDeviceGrabInfo *grab,
GdkDeviceGrabInfo *last_grab,
guint32 time,
@ -1449,7 +1451,7 @@ switch_to_pointer_grab (GdkDisplay *display,
src_window = info->window_under_pointer;
if (src_window != grab->window)
synthesize_crossing_events (display, device,
synthesize_crossing_events (display, device, source_device,
src_window, grab->window,
GDK_CROSSING_GRAB, time, serial);
@ -1500,7 +1502,7 @@ switch_to_pointer_grab (GdkDisplay *display,
}
if (pointer_window != last_grab->window)
synthesize_crossing_events (display, device,
synthesize_crossing_events (display, device, source_device,
last_grab->window, pointer_window,
GDK_CROSSING_UNGRAB, time, serial);
@ -1515,6 +1517,7 @@ switch_to_pointer_grab (GdkDisplay *display,
void
_gdk_display_device_grab_update (GdkDisplay *display,
GdkDevice *device,
GdkDevice *source_device,
gulong current_serial)
{
GdkDeviceGrabInfo *current_grab, *next_grab;
@ -1539,7 +1542,7 @@ _gdk_display_device_grab_update (GdkDisplay *display,
if (!current_grab->activated)
{
if (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD)
switch_to_pointer_grab (display, device, current_grab, NULL, time, current_serial);
switch_to_pointer_grab (display, device, source_device, current_grab, NULL, time, current_serial);
}
break;
@ -1567,7 +1570,7 @@ _gdk_display_device_grab_update (GdkDisplay *display,
g_hash_table_insert (display->device_grabs, device, grabs);
if (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD)
switch_to_pointer_grab (display, device,
switch_to_pointer_grab (display, device, source_device,
next_grab, current_grab,
time, current_serial);

60
gdk/gdkevents.c
View File

@ -1076,6 +1076,66 @@ gdk_event_get_device (const GdkEvent *event)
}
}
/**
* gdk_event_set_source_device:
* @event: a #GdkEvent
* @device: a #GdkDevice
*
* Sets the slave device for @event to @device. The event
* must have been allocated by GTK+, for instance, by
* gdk_event_copy().
*
* Since: 3.0
**/
void
gdk_event_set_source_device (GdkEvent *event,
GdkDevice *device)
{
GdkEventPrivate *private;
g_return_if_fail (gdk_event_is_allocated (event));
g_return_if_fail (GDK_IS_DEVICE (device));
private = (GdkEventPrivate *) event;
private->source_device = device;
}
/**
* gdk_event_get_source_device:
* @event: a #GdkEvent
*
* This function returns the hardware (slave) #GdkDevice that has triggered the event,
* falling back to the virtual (master) device (as in gdk_event_get_device()) if the
* event wasn't caused by interaction with a hardware device. This may happen for
* example in synthesized crossing events after a #GdkWindow updates its geometry or
* a grab is acquired/released.
*
* If the event does not contain device field, this function will return %NULL.
*
* Returns: a #GdkDevice, or %NULL.
*
* Since: 3.0
**/
GdkDevice *
gdk_event_get_source_device (const GdkEvent *event)
{
GdkEventPrivate *private;
g_return_val_if_fail (event != NULL, NULL);
if (!gdk_event_is_allocated (event))
return NULL;
private = (GdkEventPrivate *) event;
if (private->source_device)
return private->source_device;
/* Fallback to event device */
return gdk_event_get_device (event);
}
/**
* gdk_event_request_motions:
* @event: a valid #GdkEvent

3
gdk/gdkevents.h
View File

@ -1089,6 +1089,9 @@ gboolean gdk_event_get_axis (const GdkEvent *event,
void gdk_event_set_device (GdkEvent *event,
GdkDevice *device);
GdkDevice* gdk_event_get_device (const GdkEvent *event);
void gdk_event_set_source_device (GdkEvent *event,
GdkDevice *device);
GdkDevice* gdk_event_get_source_device (const GdkEvent *event);
void gdk_event_request_motions (const GdkEventMotion *event);
gboolean gdk_events_get_distance (GdkEvent *event1,

3
gdk/gdkinternals.h
View File

@ -156,6 +156,7 @@ struct _GdkEventPrivate
GdkScreen *screen;
gpointer windowing_data;
GdkDevice *device;
GdkDevice *source_device;
};
/* Tracks information about the pointer grab on this display */
@ -440,6 +441,7 @@ void _gdk_windowing_launch_failed (GAppLaunchContext *context,
void _gdk_display_device_grab_update (GdkDisplay *display,
GdkDevice *device,
GdkDevice *source_device,
gulong current_serial);
GdkDeviceGrabInfo *_gdk_display_get_last_device_grab (GdkDisplay *display,
GdkDevice *device);
@ -498,6 +500,7 @@ void _gdk_synthesize_crossing_events (GdkDisplay *display,
GdkWindow *src,
GdkWindow *dest,
GdkDevice *device,
GdkDevice *source_device,
GdkCrossingMode mode,
gint toplevel_x,
gint toplevel_y,

49
gdk/gdkwindow.c
View File

@ -8335,6 +8335,7 @@ send_crossing_event (GdkDisplay *display,
GdkNotifyType notify_type,
GdkWindow *subwindow,
GdkDevice *device,
GdkDevice *source_device,
gint toplevel_x,
gint toplevel_y,
GdkModifierType mask,
@ -8394,6 +8395,10 @@ send_crossing_event (GdkDisplay *display,
{
event = _gdk_make_event ((GdkWindow *)window, type, event_in_queue, TRUE);
gdk_event_set_device (event, device);
if (source_device)
gdk_event_set_source_device (event, source_device);
event->crossing.time = time_;
event->crossing.subwindow = subwindow;
if (subwindow)
@ -8421,6 +8426,7 @@ _gdk_synthesize_crossing_events (GdkDisplay *display,
GdkWindow *src,
GdkWindow *dest,
GdkDevice *device,
GdkDevice *source_device,
GdkCrossingMode mode,
gint toplevel_x,
gint toplevel_y,
@ -8476,7 +8482,7 @@ _gdk_synthesize_crossing_events (GdkDisplay *display,
a, GDK_LEAVE_NOTIFY,
mode,
notify_type,
NULL, device,
NULL, device, source_device,
toplevel_x, toplevel_y,
mask, time_,
event_in_queue,
@ -8498,7 +8504,7 @@ _gdk_synthesize_crossing_events (GdkDisplay *display,
mode,
notify_type,
(GdkWindow *)last,
device,
device, source_device,
toplevel_x, toplevel_y,
mask, time_,
event_in_queue,
@ -8545,7 +8551,7 @@ _gdk_synthesize_crossing_events (GdkDisplay *display,
mode,
notify_type,
(GdkWindow *)next,
device,
device, source_device,
toplevel_x, toplevel_y,
mask, time_,
event_in_queue,
@ -8567,7 +8573,7 @@ _gdk_synthesize_crossing_events (GdkDisplay *display,
mode,
notify_type,
NULL,
device,
device, source_device,
toplevel_x, toplevel_y,
mask, time_,
event_in_queue,
@ -8939,7 +8945,7 @@ do_synthesize_crossing_event (gpointer data)
_gdk_synthesize_crossing_events (display,
pointer_info->window_under_pointer,
new_window_under_pointer,
device,
device, NULL,
GDK_CROSSING_NORMAL,
pointer_info->toplevel_x,
pointer_info->toplevel_y,
@ -9055,7 +9061,7 @@ proxy_pointer_event (GdkDisplay *display,
GdkWindow *toplevel_window, *event_window;
GdkWindow *pointer_window;
GdkPointerWindowInfo *pointer_info;
GdkDevice *device;
GdkDevice *device, *source_device;
GdkEvent *event;
guint state;
gdouble toplevel_x, toplevel_y;
@ -9067,6 +9073,7 @@ proxy_pointer_event (GdkDisplay *display,
gdk_event_get_state (source_event, &state);
time_ = gdk_event_get_time (source_event);
device = gdk_event_get_device (source_event);
source_device = gdk_event_get_source_device (source_event);
pointer_info = _gdk_display_get_pointer_info (display, device);
toplevel_window = convert_native_coords_to_toplevel (event_window,
toplevel_x, toplevel_y,
@ -9100,7 +9107,7 @@ proxy_pointer_event (GdkDisplay *display,
_gdk_synthesize_crossing_events (display,
pointer_info->window_under_pointer,
event_window,
device,
device, source_device,
source_event->crossing.mode,
toplevel_x, toplevel_y,
state, time_,
@ -9116,7 +9123,7 @@ proxy_pointer_event (GdkDisplay *display,
source_event->crossing.mode,
source_event->crossing.detail,
NULL,
device,
device, source_device,
toplevel_x, toplevel_y,
state, time_,
source_event,
@ -9146,7 +9153,7 @@ proxy_pointer_event (GdkDisplay *display,
source_event->crossing.mode,
source_event->crossing.detail,
NULL,
device,
device, source_device,
toplevel_x, toplevel_y,
state, time_,
source_event,
@ -9156,7 +9163,7 @@ proxy_pointer_event (GdkDisplay *display,
_gdk_synthesize_crossing_events (display,
event_window,
pointer_window,
device,
device, source_device,
source_event->crossing.mode,
toplevel_x, toplevel_y,
state, time_,
@ -9175,7 +9182,7 @@ proxy_pointer_event (GdkDisplay *display,
_gdk_synthesize_crossing_events (display,
pointer_info->window_under_pointer,
pointer_window,
device,
device, source_device,
GDK_CROSSING_NORMAL,
toplevel_x, toplevel_y,
state, time_,
@ -9236,6 +9243,7 @@ proxy_pointer_event (GdkDisplay *display,
event->motion.device = source_event->motion.device;
event->motion.axes = g_memdup (source_event->motion.axes,
sizeof (gdouble) * gdk_device_get_n_axes (source_event->motion.device));
gdk_event_set_source_device (event, source_device);
}
}
@ -9265,7 +9273,7 @@ proxy_button_event (GdkEvent *source_event,
gdouble toplevel_x, toplevel_y;
GdkDisplay *display;
GdkWindow *w;
GdkDevice *device;
GdkDevice *device, *source_device;
type = source_event->any.type;
event_window = source_event->any.window;
@ -9273,6 +9281,7 @@ proxy_button_event (GdkEvent *source_event,
gdk_event_get_state (source_event, &state);
time_ = gdk_event_get_time (source_event);
device = gdk_event_get_device (source_event);
source_device = gdk_event_get_source_device (source_event);
display = gdk_window_get_display (source_event->any.window);
toplevel_window = convert_native_coords_to_toplevel (event_window,
toplevel_x, toplevel_y,
@ -9309,7 +9318,7 @@ proxy_button_event (GdkEvent *source_event,
serial,
time_,
TRUE);
_gdk_display_device_grab_update (display, device, serial);
_gdk_display_device_grab_update (display, device, source_device, serial);
}
pointer_window = get_pointer_window (display, toplevel_window, device,
@ -9346,6 +9355,8 @@ proxy_button_event (GdkEvent *source_event,
event->button.axes = g_memdup (source_event->button.axes,
sizeof (gdouble) * gdk_device_get_n_axes (source_event->button.device));
gdk_event_set_source_device (event, source_device);
if (type == GDK_BUTTON_PRESS)
_gdk_event_button_generate (display, event);
return TRUE;
@ -9359,6 +9370,7 @@ proxy_button_event (GdkEvent *source_event,
event->scroll.y_root = source_event->scroll.y_root;
event->scroll.state = state;
event->scroll.device = source_event->scroll.device;
gdk_event_set_source_device (event, source_device);
return TRUE;
default:
@ -9452,20 +9464,21 @@ _gdk_windowing_got_event (GdkDisplay *display,
guint old_state, old_button;
GdkDeviceGrabInfo *button_release_grab;
GdkPointerWindowInfo *pointer_info;
GdkDevice *device;
GdkDevice *device, *source_device;
gboolean is_toplevel;
if (gdk_event_get_time (event) != GDK_CURRENT_TIME)
display->last_event_time = gdk_event_get_time (event);
device = gdk_event_get_device (event);
source_device = gdk_event_get_source_device (event);
if (device)
{
GdkInputMode mode;
g_object_get (device, "input-mode", &mode, NULL);
_gdk_display_device_grab_update (display, device, serial);
_gdk_display_device_grab_update (display, device, source_device, serial);
if (mode == GDK_MODE_DISABLED ||
!_gdk_display_check_grab_ownership (display, device, serial))
@ -9510,7 +9523,7 @@ _gdk_windowing_got_event (GdkDisplay *display,
serial,
gdk_event_get_time (event),
TRUE);
_gdk_display_device_grab_update (display, device, serial);
_gdk_display_device_grab_update (display, device, source_device, serial);
}
if (event->type == GDK_BUTTON_RELEASE &&
!event->any.send_event)
@ -9523,7 +9536,7 @@ _gdk_windowing_got_event (GdkDisplay *display,
{
button_release_grab->serial_end = serial;
button_release_grab->implicit_ungrab = FALSE;
_gdk_display_device_grab_update (display, device, serial);
_gdk_display_device_grab_update (display, device, source_device, serial);
}
}
@ -9645,7 +9658,7 @@ _gdk_windowing_got_event (GdkDisplay *display,
{
button_release_grab->serial_end = serial;
button_release_grab->implicit_ungrab = FALSE;
_gdk_display_device_grab_update (display, device, serial);
_gdk_display_device_grab_update (display, device, source_device, serial);
}
}

39
gdk/x11/gdkdevicemanager-xi2.c
View File

@ -641,6 +641,7 @@ translate_keyboard_string (GdkEventKey *event)
static void
generate_focus_event (GdkWindow *window,
GdkDevice *device,
GdkDevice *source_device,
gboolean in)
{
GdkEvent *event;
@ -650,6 +651,7 @@ generate_focus_event (GdkWindow *window,
event->focus_change.send_event = FALSE;
event->focus_change.in = in;
gdk_event_set_device (event, device);
gdk_event_set_source_device (event, source_device);
gdk_event_put (event);
gdk_event_free (event);
@ -658,6 +660,7 @@ generate_focus_event (GdkWindow *window,
static void
handle_focus_change (GdkWindow *window,
GdkDevice *device,
GdkDevice *source_device,
gint detail,
gint mode,
gboolean in)
@ -717,7 +720,7 @@ handle_focus_change (GdkWindow *window,
}
if (HAS_FOCUS (toplevel) != had_focus)
generate_focus_event (window, device, (in) ? TRUE : FALSE);
generate_focus_event (window, device, source_device, (in) ? TRUE : FALSE);
}
static gdouble *
@ -916,7 +919,7 @@ gdk_device_manager_xi2_translate_event (GdkEventTranslator *translator,
XIDeviceEvent *xev = (XIDeviceEvent *) ev;
GdkKeymap *keymap = gdk_keymap_get_for_display (display);
GdkModifierType consumed, state;
GdkDevice *device;
GdkDevice *device, *source_device;
event->key.type = xev->evtype == XI_KeyPress ? GDK_KEY_PRESS : GDK_KEY_RELEASE;
@ -933,6 +936,10 @@ gdk_device_manager_xi2_translate_event (GdkEventTranslator *translator,
GUINT_TO_POINTER (xev->deviceid));
gdk_event_set_device (event, device);
source_device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (xev->sourceid));
gdk_event_set_source_device (event, source_device);
event->key.keyval = GDK_KEY_VoidSymbol;
gdk_keymap_translate_keyboard_state (keymap,
@ -961,6 +968,7 @@ gdk_device_manager_xi2_translate_event (GdkEventTranslator *translator,
case XI_ButtonRelease:
{
XIDeviceEvent *xev = (XIDeviceEvent *) ev;
GdkDevice *source_device;
switch (xev->detail)
{
@ -989,6 +997,10 @@ gdk_device_manager_xi2_translate_event (GdkEventTranslator *translator,
event->scroll.device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (xev->deviceid));
source_device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (xev->sourceid));
gdk_event_set_source_device (event, source_device);
event->scroll.state = gdk_device_xi2_translate_state (&xev->mods, &xev->buttons);
break;
default:
@ -1004,6 +1016,10 @@ gdk_device_manager_xi2_translate_event (GdkEventTranslator *translator,
event->button.device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (xev->deviceid));
source_device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (xev->sourceid));
gdk_event_set_source_device (event, source_device);
event->button.axes = translate_axes (event->button.device,
event->button.x,
event->button.y,
@ -1036,6 +1052,7 @@ gdk_device_manager_xi2_translate_event (GdkEventTranslator *translator,
case XI_Motion:
{
XIDeviceEvent *xev = (XIDeviceEvent *) ev;
GdkDevice *source_device;
event->motion.type = GDK_MOTION_NOTIFY;
@ -1050,6 +1067,10 @@ gdk_device_manager_xi2_translate_event (GdkEventTranslator *translator,
event->motion.device = g_hash_table_lookup (device_manager->id_table,
GINT_TO_POINTER (xev->deviceid));
source_device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (xev->sourceid));
gdk_event_set_source_device (event, source_device);
event->motion.state = gdk_device_xi2_translate_state (&xev->mods, &xev->buttons);
/* There doesn't seem to be motion hints in XI */
@ -1075,7 +1096,7 @@ gdk_device_manager_xi2_translate_event (GdkEventTranslator *translator,
case XI_Leave:
{
XIEnterEvent *xev = (XIEnterEvent *) ev;
GdkDevice *device;
GdkDevice *device, *source_device;
event->crossing.type = (ev->evtype == XI_Enter) ? GDK_ENTER_NOTIFY : GDK_LEAVE_NOTIFY;
@ -1093,6 +1114,10 @@ gdk_device_manager_xi2_translate_event (GdkEventTranslator *translator,
GINT_TO_POINTER (xev->deviceid));
gdk_event_set_device (event, device);
source_device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (xev->sourceid));
gdk_event_set_source_device (event, source_device);
event->crossing.mode = translate_crossing_mode (xev->mode);
event->crossing.detail = translate_notify_type (xev->detail);
event->crossing.state = gdk_device_xi2_translate_state (&xev->mods, &xev->buttons);
@ -1102,12 +1127,16 @@ gdk_device_manager_xi2_translate_event (GdkEventTranslator *translator,
case XI_FocusOut:
{
XIEnterEvent *xev = (XIEnterEvent *) ev;
GdkDevice *device;
GdkDevice *device, *source_device;
device = g_hash_table_lookup (device_manager->id_table,
GINT_TO_POINTER (xev->deviceid));
handle_focus_change (window, device, xev->detail, xev->mode,
source_device = g_hash_table_lookup (device_manager->id_table,
GUINT_TO_POINTER (xev->sourceid));
handle_focus_change (window, device, source_device,
xev->detail, xev->mode,
(ev->evtype == XI_FocusIn) ? TRUE : FALSE);
return_val = FALSE;

2
gdk/x11/gdkdisplay-x11.c
View File

@ -1633,7 +1633,7 @@ device_ungrab_callback (GdkDisplay *display,
{
GdkDevice *device = data;
_gdk_display_device_grab_update (display, device, serial);
_gdk_display_device_grab_update (display, device, NULL, serial);
}

2
gdk/x11/gdkmain-x11.c
View File

@ -136,7 +136,7 @@ has_pointer_grab_callback (GdkDisplay *display,
{
GdkDevice *device = data;
_gdk_display_device_grab_update (display, device, serial);
_gdk_display_device_grab_update (display, device, NULL, serial);
}
GdkGrabStatus