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clutter/evdev: Implement ClutterVirtualInputDevice::notify_keyval

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This is somewhat gross at the moment, because we're after all mimicking
real keyboard events, we can only lookup keycodes that are available
in the current map, and the control of levels is rather limited.

Eventually, we want to implement the text_input protocol, handle these
events separately to MetaWaylandKeyboard, so event->key.keyval is
is guaranteed to be the final result. Until then, this is the farthest
we can get.

https://bugzilla.gnome.org/show_bug.cgi?id=765009
This commit is contained in:
Carlos Garnacho 2016-07-20 18:03:44 +02:00
parent 4abd31d863
commit b53b94e6f2
1 changed files with 138 additions and 0 deletions
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138
clutter/clutter/evdev/clutter-virtual-input-device-evdev.c
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@ -245,6 +245,143 @@ clutter_virtual_input_device_evdev_notify_key (ClutterVirtualInputDevice *virtua
TRUE);
}
static gboolean
pick_keycode_for_keyval_in_current_group (ClutterVirtualInputDevice *virtual_device,
guint keyval,
guint *keycode_out,
guint *level_out)
{
ClutterVirtualInputDeviceEvdev *virtual_evdev =
CLUTTER_VIRTUAL_INPUT_DEVICE_EVDEV (virtual_device);
ClutterDeviceManager *manager;
struct xkb_keymap *xkb_keymap;
struct xkb_state *state;
guint keycode, layout;
xkb_keycode_t min_keycode, max_keycode;
manager = clutter_virtual_input_device_get_manager (virtual_device);
xkb_keymap = _clutter_device_manager_evdev_get_keymap (CLUTTER_DEVICE_MANAGER_EVDEV (manager));
state = virtual_evdev->seat->xkb;
layout = xkb_state_serialize_layout (state, XKB_STATE_LAYOUT_EFFECTIVE);
min_keycode = xkb_keymap_min_keycode (xkb_keymap);
max_keycode = xkb_keymap_max_keycode (xkb_keymap);
for (keycode = min_keycode; keycode < max_keycode; keycode++)
{
gint num_levels, level;
num_levels = xkb_keymap_num_levels_for_key (xkb_keymap, keycode, layout);
for (level = 0; level < num_levels; level++)
{
const xkb_keysym_t *syms;
gint num_syms, sym;
num_syms = xkb_keymap_key_get_syms_by_level (xkb_keymap, keycode, layout, level, &syms);
for (sym = 0; sym < num_syms; sym++)
{
if (syms[sym] == keyval)
{
*keycode_out = keycode;
if (level_out)
*level_out = level;
return TRUE;
}
}
}
}
return FALSE;
}
static void
apply_level_modifiers (ClutterVirtualInputDevice *virtual_device,
uint64_t time_us,
uint32_t level,
uint32_t key_state)
{
ClutterVirtualInputDeviceEvdev *virtual_evdev =
CLUTTER_VIRTUAL_INPUT_DEVICE_EVDEV (virtual_device);
guint keysym, keycode, evcode;
if (level == 0)
return;
if (level == 1)
{
keysym = XKB_KEY_Shift_L;
}
else if (level == 2)
{
keysym = XKB_KEY_ISO_Level3_Shift;
}
else
{
g_warning ("Unhandled level: %d\n", level);
return;
}
if (!pick_keycode_for_keyval_in_current_group (virtual_device, keysym,
&keycode, NULL))
return;
clutter_input_device_keycode_to_evdev (virtual_evdev->device,
keycode, &evcode);
clutter_seat_evdev_notify_key (virtual_evdev->seat,
virtual_evdev->device,
time_us,
evcode,
key_state,
TRUE);
}
static void
clutter_virtual_input_device_evdev_notify_keyval (ClutterVirtualInputDevice *virtual_device,
uint64_t time_us,
uint32_t keyval,
ClutterKeyState key_state)
{
ClutterVirtualInputDeviceEvdev *virtual_evdev =
CLUTTER_VIRTUAL_INPUT_DEVICE_EVDEV (virtual_device);
int key_count;
guint keycode = 0, level = 0, evcode = 0;
if (!pick_keycode_for_keyval_in_current_group (virtual_device,
keyval, &keycode, &level))
{
g_warning ("No keycode found for keyval %x in current group", keyval);
return;
}
clutter_input_device_keycode_to_evdev (virtual_evdev->device,
keycode, &evcode);
if (get_button_type (evcode) != EVDEV_BUTTON_TYPE_KEY)
{
g_warning ("Unknown/invalid virtual device key 0x%x pressed\n", evcode);
return;
}
key_count = update_button_count (virtual_evdev, evcode, key_state);
if (key_count < 0 || key_count > 1)
{
g_warning ("Received multiple virtual 0x%x key %s (ignoring)", keycode,
key_state == CLUTTER_KEY_STATE_PRESSED ? "presses" : "releases");
update_button_count (virtual_evdev, evcode, 1 - key_state);
return;
}
if (key_state)
apply_level_modifiers (virtual_device, time_us, level, key_state);
clutter_seat_evdev_notify_key (virtual_evdev->seat,
virtual_evdev->device,
time_us,
evcode,
key_state,
TRUE);
if (!key_state)
apply_level_modifiers (virtual_device, time_us, level, key_state);
}
static void
clutter_virtual_input_device_evdev_get_property (GObject *object,
guint prop_id,
@ -347,6 +484,7 @@ clutter_virtual_input_device_evdev_class_init (ClutterVirtualInputDeviceEvdevCla
virtual_input_device_class->notify_absolute_motion = clutter_virtual_input_device_evdev_notify_absolute_motion;
virtual_input_device_class->notify_button = clutter_virtual_input_device_evdev_notify_button;
virtual_input_device_class->notify_key = clutter_virtual_input_device_evdev_notify_key;
virtual_input_device_class->notify_keyval = clutter_virtual_input_device_evdev_notify_keyval;
obj_props[PROP_SEAT] = g_param_spec_pointer ("seat",
P_("ClutterSeatEvdev"),