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wayland: reimplement keyboard state handling properly

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We can't rely on clutter's xkb_state, because that's updated
when events are pulled from the kernel, not when we see them.
Instead, use the new clutter API to get the full modifier state
from the event (which, as a side effect, also works when clutter
is using the X11 backend for running nested).

https://bugzilla.gnome.org/show_bug.cgi?id=706963
This commit is contained in:
Giovanni Campagna 2013-09-04 15:01:11 +02:00
parent 28708e4317
commit 450afbaf51
5 changed files with 107 additions and 126 deletions
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169
src/wayland/meta-wayland-keyboard.c
View File

@ -202,7 +202,7 @@ lose_keyboard_focus (struct wl_listener *listener, void *data)
keyboard->focus_resource = NULL;
}
static void
static gboolean
default_grab_key (MetaWaylandKeyboardGrab *grab,
uint32_t time, uint32_t key, uint32_t state)
{
@ -218,6 +218,8 @@ default_grab_key (MetaWaylandKeyboardGrab *grab,
serial = wl_display_next_serial (display);
wl_keyboard_send_key (resource, serial, time, key, state);
}
return resource != NULL;
}
static struct wl_resource *
@ -274,12 +276,14 @@ static const MetaWaylandKeyboardGrabInterface
default_grab_modifiers,
};
static void
static gboolean
modal_key (MetaWaylandKeyboardGrab *grab,
uint32_t time,
uint32_t key,
uint32_t state)
{
/* FALSE means: let the event through to clutter */
return FALSE;
}
static void
@ -328,12 +332,6 @@ meta_wayland_keyboard_init (MetaWaylandKeyboard *keyboard,
manager = clutter_device_manager_get_default ();
clutter_evdev_set_keyboard_map (manager, keyboard->xkb_info.keymap);
keyboard->xkb_state = clutter_evdev_get_keyboard_state (manager);
xkb_state_ref (keyboard->xkb_state);
}
else
{
keyboard->xkb_state = xkb_state_new (keyboard->xkb_info.keymap);
}
return TRUE;
@ -351,52 +349,6 @@ meta_wayland_xkb_info_destroy (MetaWaylandXkbInfo *xkb_info)
close (xkb_info->keymap_fd);
}
static void
update_state_from_clutter (MetaWaylandKeyboard *keyboard,
ClutterModifierType modifier_state)
{
uint32_t depressed_mods = 0;
uint32_t locked_mods = 0;
if ((modifier_state & CLUTTER_SHIFT_MASK) &&
keyboard->xkb_info.shift_mod != XKB_MOD_INVALID)
depressed_mods |= (1 << keyboard->xkb_info.shift_mod);
if ((modifier_state & CLUTTER_LOCK_MASK) &&
keyboard->xkb_info.caps_mod != XKB_MOD_INVALID)
locked_mods |= (1 << keyboard->xkb_info.caps_mod);
if ((modifier_state & CLUTTER_CONTROL_MASK) &&
keyboard->xkb_info.ctrl_mod != XKB_MOD_INVALID)
depressed_mods |= (1 << keyboard->xkb_info.ctrl_mod);
if ((modifier_state & CLUTTER_MOD1_MASK) &&
keyboard->xkb_info.alt_mod != XKB_MOD_INVALID)
depressed_mods |= (1 << keyboard->xkb_info.alt_mod);
if ((modifier_state & CLUTTER_MOD2_MASK) &&
keyboard->xkb_info.mod2_mod != XKB_MOD_INVALID)
depressed_mods |= (1 << keyboard->xkb_info.mod2_mod);
if ((modifier_state & CLUTTER_MOD3_MASK) &&
keyboard->xkb_info.mod3_mod != XKB_MOD_INVALID)
depressed_mods |= (1 << keyboard->xkb_info.mod3_mod);
if ((modifier_state & CLUTTER_SUPER_MASK) &&
keyboard->xkb_info.super_mod != XKB_MOD_INVALID)
depressed_mods |= (1 << keyboard->xkb_info.super_mod);
if ((modifier_state & CLUTTER_MOD5_MASK) &&
keyboard->xkb_info.mod5_mod != XKB_MOD_INVALID)
depressed_mods |= (1 << keyboard->xkb_info.mod5_mod);
xkb_state_update_mask (keyboard->xkb_state,
depressed_mods,
0,
locked_mods,
0, 0, 0);
}
static gboolean
state_equal (MetaWaylandXkbState *one,
MetaWaylandXkbState *two)
@ -410,24 +362,19 @@ state_equal (MetaWaylandXkbState *one,
static void
set_modifiers (MetaWaylandKeyboard *keyboard,
guint32 serial,
ClutterModifierType modifier_state)
ClutterEvent *event)
{
MetaWaylandKeyboardGrab *grab = keyboard->grab;
MetaWaylandXkbState new_state;
guint effective_state;
/* In the evdev case, the state is shared with the clutter backend, so
we don't need to update it */
if (!keyboard->is_evdev)
update_state_from_clutter (keyboard, modifier_state);
new_state.mods_depressed = xkb_state_serialize_mods (keyboard->xkb_state,
XKB_STATE_MODS_DEPRESSED);
new_state.mods_latched = xkb_state_serialize_mods (keyboard->xkb_state,
XKB_STATE_MODS_LATCHED);
new_state.mods_locked = xkb_state_serialize_mods (keyboard->xkb_state,
XKB_STATE_MODS_LOCKED);
new_state.group = xkb_state_serialize_layout (keyboard->xkb_state,
XKB_STATE_LAYOUT_EFFECTIVE);
clutter_event_get_state_full (event,
NULL,
&new_state.mods_depressed,
&new_state.mods_latched,
&new_state.mods_locked,
&effective_state);
new_state.group = (effective_state >> 13) & 0x3;
if (state_equal (&keyboard->modifier_state, &new_state))
return;
@ -442,36 +389,24 @@ set_modifiers (MetaWaylandKeyboard *keyboard,
new_state.group);
}
void
meta_wayland_keyboard_handle_event (MetaWaylandKeyboard *keyboard,
const ClutterKeyEvent *event)
static gboolean
update_pressed_keys (MetaWaylandKeyboard *keyboard,
uint32_t evdev_code,
gboolean is_press)
{
gboolean state = event->type == CLUTTER_KEY_PRESS;
guint evdev_code;
uint32_t serial;
/* We can't do anything with the event if we can't get an evdev
keycode for it */
if (event->device == NULL ||
!clutter_input_device_keycode_to_evdev (event->device,
event->hardware_keycode,
&evdev_code))
return;
/* We want to ignore events that are sent because of auto-repeat. In
the Clutter event stream these appear as a single key press
event. We can detect that because the key will already have been
pressed */
if (state)
if (is_press)
{
uint32_t *end = (void *) ((char *) keyboard->keys.data +
keyboard->keys.size);
uint32_t *k;
/* Ignore the event if the key is already down */
/* We want to ignore events that are sent because of auto-repeat. In
the Clutter event stream these appear as a single key press
event. We can detect that because the key will already have been
pressed */
for (k = keyboard->keys.data; k < end; k++)
if (*k == evdev_code)
return;
return TRUE;
/* Otherwise add the key to the list of pressed keys */
k = wl_array_add (&keyboard->keys, sizeof (*k));
@ -494,19 +429,56 @@ meta_wayland_keyboard_handle_event (MetaWaylandKeyboard *keyboard,
}
g_warning ("unexpected key release event for key 0x%x", evdev_code);
return FALSE;
found:
(void) 0;
}
return FALSE;
}
gboolean
meta_wayland_keyboard_handle_event (MetaWaylandKeyboard *keyboard,
const ClutterKeyEvent *event)
{
gboolean is_press = event->type == CLUTTER_KEY_PRESS;
guint xkb_keycode, evdev_code;
uint32_t serial;
gboolean autorepeat;
gboolean handled;
xkb_keycode = event->hardware_keycode;
if (event->device == NULL ||
!clutter_input_device_keycode_to_evdev (event->device,
xkb_keycode, &evdev_code))
evdev_code = xkb_keycode - 8; /* What everyone is doing in practice... */
autorepeat = update_pressed_keys (keyboard, evdev_code, is_press);
meta_verbose ("Handling key %s%s event code %d\n",
is_press ? "press" : "release",
autorepeat ? " (autorepeat)" : "",
xkb_keycode);
if (autorepeat)
return FALSE;
serial = wl_display_next_serial (keyboard->display);
set_modifiers (keyboard, serial, event->modifier_state);
set_modifiers (keyboard, serial, (ClutterEvent*)event);
keyboard->grab->interface->key (keyboard->grab,
handled = keyboard->grab->interface->key (keyboard->grab,
event->time,
evdev_code,
state);
is_press);
if (handled)
meta_verbose ("Sent event to wayland client\n");
else
meta_verbose ("No wayland surface is focused, continuing normal operation\n");
return handled;
}
void
@ -597,7 +569,6 @@ meta_wayland_keyboard_release (MetaWaylandKeyboard *keyboard)
meta_wayland_xkb_info_destroy (&keyboard->xkb_info);
xkb_context_unref (keyboard->xkb_context);
xkb_state_unref (keyboard->xkb_state);
/* XXX: What about keyboard->resource_list? */
if (keyboard->focus_resource)
@ -615,6 +586,8 @@ meta_wayland_keyboard_begin_modal (MetaWaylandKeyboard *keyboard,
uint32_t *k;
uint32_t serial;
meta_verbose ("Asked to acquire modal keyboard grab, timestamp %d\n", timestamp);
if (keyboard->grab != &keyboard->default_grab)
return FALSE;
@ -627,15 +600,19 @@ meta_wayland_keyboard_begin_modal (MetaWaylandKeyboard *keyboard,
0, 0, 0, 0);
for (k = keyboard->keys.data; k < end; k++)
{
keyboard->grab->interface->key (keyboard->grab,
timestamp,
*k, 0);
}
}
grab = g_slice_new0 (MetaWaylandKeyboardGrab);
grab->interface = &modal_grab;
meta_wayland_keyboard_start_grab (keyboard, grab);
meta_verbose ("Acquired modal keyboard grab, timestamp %d\n", timestamp);
return TRUE;
}
@ -668,8 +645,12 @@ meta_wayland_keyboard_end_modal (MetaWaylandKeyboard *keyboard,
keyboard->modifier_state.group);
for (k = keyboard->keys.data; k < end; k++)
{
keyboard->grab->interface->key (keyboard->grab,
timestamp,
*k, 1);
}
}
meta_verbose ("Released modal keyboard grab, timestamp %d\n", timestamp);
}

6
src/wayland/meta-wayland-keyboard.h
View File

@ -50,7 +50,7 @@
struct _MetaWaylandKeyboardGrabInterface
{
void (*key) (MetaWaylandKeyboardGrab * grab, uint32_t time,
gboolean (*key) (MetaWaylandKeyboardGrab * grab, uint32_t time,
uint32_t key, uint32_t state);
void (*modifiers) (MetaWaylandKeyboardGrab * grab, uint32_t serial,
uint32_t mods_depressed, uint32_t mods_latched,
@ -111,9 +111,7 @@ struct _MetaWaylandKeyboard
struct wl_display *display;
struct xkb_context *xkb_context;
struct xkb_state *xkb_state;
gboolean is_evdev;
MetaWaylandXkbInfo xkb_info;
struct xkb_rule_names xkb_names;
@ -126,7 +124,7 @@ meta_wayland_keyboard_init (MetaWaylandKeyboard *keyboard,
struct wl_display *display,
gboolean is_evdev);
void
gboolean
meta_wayland_keyboard_handle_event (MetaWaylandKeyboard *keyboard,
const ClutterKeyEvent *event);

7
src/wayland/meta-wayland-seat.c
View File

@ -446,7 +446,7 @@ count_buttons (const ClutterEvent *event)
return count;
}
void
gboolean
meta_wayland_seat_handle_event (MetaWaylandSeat *seat,
const ClutterEvent *event)
{
@ -467,9 +467,8 @@ meta_wayland_seat_handle_event (MetaWaylandSeat *seat,
case CLUTTER_KEY_PRESS:
case CLUTTER_KEY_RELEASE:
meta_wayland_keyboard_handle_event (&seat->keyboard,
return meta_wayland_keyboard_handle_event (&seat->keyboard,
(const ClutterKeyEvent *) event);
break;
case CLUTTER_SCROLL:
handle_scroll_event (seat, (const ClutterScrollEvent *) event);
@ -478,6 +477,8 @@ meta_wayland_seat_handle_event (MetaWaylandSeat *seat,
default:
break;
}
return FALSE;
}
static void

2
src/wayland/meta-wayland-seat.h
View File

@ -90,7 +90,7 @@ MetaWaylandSeat *
meta_wayland_seat_new (struct wl_display *display,
gboolean is_native);
void
gboolean
meta_wayland_seat_handle_event (MetaWaylandSeat *seat,
const ClutterEvent *event);

25
src/wayland/meta-wayland.c
View File

@ -545,7 +545,7 @@ synthesize_motion_event (MetaWaylandCompositor *compositor,
XIDeviceEvent device_event;
unsigned char button_mask[(N_BUTTONS + 7) / 8] = { 0 };
MetaDisplay *display = meta_get_display ();
ClutterModifierType state;
ClutterModifierType button_state;
int i;
generic_event.type = GenericEvent;
@ -618,10 +618,18 @@ synthesize_motion_event (MetaWaylandCompositor *compositor,
device_event.root_x = wl_fixed_to_double (pointer->x);
device_event.root_y = wl_fixed_to_double (pointer->y);
state = clutter_event_get_state (event);
clutter_event_get_state_full (event,
&button_state,
(ClutterModifierType*)&device_event.mods.base,
(ClutterModifierType*)&device_event.mods.latched,
(ClutterModifierType*)&device_event.mods.locked,
(ClutterModifierType*)&device_event.mods.effective);
device_event.mods.effective &= ~button_state;
memset (&device_event.group, 0, sizeof (device_event.group));
device_event.group.effective = (device_event.mods.effective >> 13) & 0x3;
for (i = 0; i < N_BUTTONS; i++)
if ((state & (CLUTTER_BUTTON1_MASK << i)))
if ((button_state & (CLUTTER_BUTTON1_MASK << i)))
XISetMask (button_mask, i + 1);
device_event.buttons.mask_len = N_BUTTONS + 1;
device_event.buttons.mask = button_mask;
@ -630,14 +638,6 @@ synthesize_motion_event (MetaWaylandCompositor *compositor,
device_event.valuators.mask = NULL;
device_event.valuators.values = NULL;
memset (&device_event.mods, 0, sizeof (device_event.mods));
device_event.mods.effective =
state & (CLUTTER_MODIFIER_MASK &
~(((CLUTTER_BUTTON1_MASK << N_BUTTONS) - 1) ^
(CLUTTER_BUTTON1_MASK - 1)));
memset (&device_event.group, 0, sizeof (device_event.group));
meta_display_handle_event (display, (XEvent *) &generic_event);
}
@ -678,7 +678,8 @@ event_cb (ClutterActor *stage,
reset_idletimes (event);
meta_wayland_seat_handle_event (compositor->seat, event);
if (meta_wayland_seat_handle_event (compositor->seat, event))
return TRUE;
/* HACK: for now, the surfaces from Wayland clients aren't
integrated into Mutter's event handling and Mutter won't give them