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clutter/evdev: implement toggle keys support

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Keeping Shift pressed for 8 seconds enables slow keys, pressing Shift 5
times in a row enables sticky keys.

https://bugzilla.gnome.org/show_bug.cgi?id=788564
This commit is contained in:
Olivier Fourdan 2017-10-19 13:03:22 +02:00
parent 3fc2ea8297
commit 356b4b0dc5
2 changed files with 133 additions and 0 deletions
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130
clutter/clutter/evdev/clutter-input-device-evdev.c
View File

@ -65,6 +65,7 @@ typedef struct _SlowKeysEventPending
static void clear_slow_keys (ClutterInputDeviceEvdev *device);
static void stop_bounce_keys (ClutterInputDeviceEvdev *device);
static void stop_toggle_slowkeys (ClutterInputDeviceEvdev *device);
static void
clutter_input_device_evdev_finalize (GObject *object)
@ -81,6 +82,7 @@ clutter_input_device_evdev_finalize (GObject *object)
clear_slow_keys (device_evdev);
stop_bounce_keys (device_evdev);
stop_toggle_slowkeys (device_evdev);
G_OBJECT_CLASS (clutter_input_device_evdev_parent_class)->finalize (object);
}
@ -518,6 +520,13 @@ set_stickykeys_off (ClutterInputDeviceEvdev *device)
notify_stickykeys_change (device);
}
static void
set_stickykeys_on (ClutterInputDeviceEvdev *device)
{
device->a11y_flags |= CLUTTER_A11Y_STICKY_KEYS_ENABLED;
notify_stickykeys_change (device);
}
static void
clear_stickykeys_event (ClutterEvent *event,
ClutterInputDeviceEvdev *device)
@ -526,6 +535,28 @@ clear_stickykeys_event (ClutterEvent *event,
update_stickykeys_event (event, device, 0, 0);
}
static void
set_slowkeys_off (ClutterInputDeviceEvdev *device)
{
device->a11y_flags &= ~CLUTTER_A11Y_SLOW_KEYS_ENABLED;
g_signal_emit_by_name (CLUTTER_INPUT_DEVICE (device)->device_manager,
"kbd-a11y-flags-changed",
device->a11y_flags,
CLUTTER_A11Y_SLOW_KEYS_ENABLED);
}
static void
set_slowkeys_on (ClutterInputDeviceEvdev *device)
{
device->a11y_flags |= CLUTTER_A11Y_SLOW_KEYS_ENABLED;
g_signal_emit_by_name (CLUTTER_INPUT_DEVICE (device)->device_manager,
"kbd-a11y-flags-changed",
device->a11y_flags,
CLUTTER_A11Y_SLOW_KEYS_ENABLED);
}
static void
handle_stickykeys_press (ClutterEvent *event,
ClutterInputDeviceEvdev *device)
@ -591,6 +622,90 @@ handle_stickykeys_release (ClutterEvent *event,
update_stickykeys_event (event, device, 0, device->stickykeys_locked_mask);
}
static gboolean
trigger_toggle_slowkeys (gpointer data)
{
ClutterInputDeviceEvdev *device = data;
device->toggle_slowkeys_timer = 0;
if (device->a11y_flags & CLUTTER_A11Y_FEATURE_STATE_CHANGE_BEEP)
clutter_input_device_evdev_bell_notify ();
if (device->a11y_flags & CLUTTER_A11Y_SLOW_KEYS_ENABLED)
set_slowkeys_off (device);
else
set_slowkeys_on (device);
return G_SOURCE_REMOVE;
}
static void
start_toggle_slowkeys (ClutterInputDeviceEvdev *device)
{
if (device->toggle_slowkeys_timer != 0)
return;
device->toggle_slowkeys_timer =
clutter_threads_add_timeout (8 * 1000 /* 8 secs */,
trigger_toggle_slowkeys,
device);
}
static void
stop_toggle_slowkeys (ClutterInputDeviceEvdev *device)
{
if (device->toggle_slowkeys_timer)
{
g_source_remove (device->toggle_slowkeys_timer);
device->toggle_slowkeys_timer = 0;
}
}
static void
handle_togglekeys_press (ClutterEvent *event,
ClutterInputDeviceEvdev *device)
{
if (event->key.keyval == XKB_KEY_Shift_L || event->key.keyval == XKB_KEY_Shift_R)
{
start_toggle_slowkeys (device);
if (event->key.time > device->last_shift_time + 15 * 1000 /* 15 secs */)
device->shift_count = 1;
else
device->shift_count++;
device->last_shift_time = event->key.time;
}
else
{
device->shift_count = 0;
stop_toggle_slowkeys (device);
}
}
static void
handle_togglekeys_release (ClutterEvent *event,
ClutterInputDeviceEvdev *device)
{
if (event->key.keyval == XKB_KEY_Shift_L || event->key.keyval == XKB_KEY_Shift_R)
{
stop_toggle_slowkeys (device);
if (device->shift_count >= 5)
{
device->shift_count = 0;
if (device->a11y_flags & CLUTTER_A11Y_FEATURE_STATE_CHANGE_BEEP)
clutter_input_device_evdev_bell_notify ();
if (device->a11y_flags & CLUTTER_A11Y_STICKY_KEYS_ENABLED)
set_stickykeys_off (device);
else
set_stickykeys_on (device);
}
}
}
static void
clutter_input_device_evdev_process_kbd_a11y_event (ClutterEvent *event,
ClutterInputDevice *device,
@ -601,6 +716,14 @@ clutter_input_device_evdev_process_kbd_a11y_event (ClutterEvent *e
if (!device_evdev->a11y_flags & CLUTTER_A11Y_KEYBOARD_ENABLED)
goto emit_event;
if (device_evdev->a11y_flags & CLUTTER_A11Y_TOGGLE_KEYS_ENABLED)
{
if (event->type == CLUTTER_KEY_PRESS)
handle_togglekeys_press (event, device_evdev);
else
handle_togglekeys_release (event, device_evdev);
}
if ((device_evdev->a11y_flags & CLUTTER_A11Y_BOUNCE_KEYS_ENABLED) &&
(get_debounce_delay (device) != 0))
{
@ -655,6 +778,13 @@ clutter_input_device_evdev_apply_kbd_a11y_settings (ClutterInputDeviceEvdev *dev
update_internal_xkb_state (device, 0, 0);
}
if (changed_flags & (CLUTTER_A11Y_KEYBOARD_ENABLED | CLUTTER_A11Y_TOGGLE_KEYS_ENABLED))
{
device->toggle_slowkeys_timer = 0;
device->shift_count = 0;
device->last_shift_time = 0;
}
/* Keep our own copy of keyboard a11y features flags to see what changes */
device->a11y_flags = settings->controls;
}

3
clutter/clutter/evdev/clutter-input-device-evdev.h
View File

@ -79,6 +79,9 @@ struct _ClutterInputDeviceEvdev
xkb_mod_mask_t stickykeys_depressed_mask;
xkb_mod_mask_t stickykeys_latched_mask;
xkb_mod_mask_t stickykeys_locked_mask;
guint toggle_slowkeys_timer;
guint16 shift_count;
guint32 last_shift_time;
};
GType _clutter_input_device_evdev_get_type (void) G_GNUC_CONST;