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clutter: Add API for filtering relative motion events

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Add an API that allows the owner of the clutter context to alter the
relative motion events (so far relative pointer events).

https://bugzilla.gnome.org/show_bug.cgi?id=778119
This commit is contained in:
Jonas Ådahl 2017-02-03 13:02:50 +08:00 committed by Carlos Garnacho
parent a77da353f3
commit 8f691c28f3
4 changed files with 62 additions and 0 deletions
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36
clutter/clutter/evdev/clutter-device-manager-evdev.c
View File

@ -102,6 +102,9 @@ struct _ClutterDeviceManagerEvdevPrivate
gpointer constrain_data;
GDestroyNotify constrain_data_notify;
ClutterRelativeMotionFilter relative_motion_filter;
gpointer relative_motion_filter_user_data;
ClutterStageManager *stage_manager;
guint stage_added_handler;
guint stage_removed_handler;
@ -264,6 +267,22 @@ _clutter_device_manager_evdev_constrain_pointer (ClutterDeviceManagerEvdev *mana
}
}
void
_clutter_device_manager_evdev_filter_relative_motion (ClutterDeviceManagerEvdev *manager_evdev,
ClutterInputDevice *device,
float x,
float y,
float *dx,
float *dy)
{
ClutterDeviceManagerEvdevPrivate *priv = manager_evdev->priv;
if (!priv->relative_motion_filter)
return;
priv->relative_motion_filter (device, x, y, dx, dy,
priv->relative_motion_filter_user_data);
}
static ClutterEvent *
new_absolute_motion_event (ClutterInputDevice *input_device,
@ -2661,6 +2680,23 @@ clutter_evdev_set_pointer_constrain_callback (ClutterDeviceManager *e
priv->constrain_data_notify = user_data_notify;
}
void
clutter_evdev_set_relative_motion_filter (ClutterDeviceManager *evdev,
ClutterRelativeMotionFilter filter,
gpointer user_data)
{
ClutterDeviceManagerEvdev *manager_evdev;
ClutterDeviceManagerEvdevPrivate *priv;
g_return_if_fail (CLUTTER_IS_DEVICE_MANAGER_EVDEV (evdev));
manager_evdev = CLUTTER_DEVICE_MANAGER_EVDEV (evdev);
priv = manager_evdev->priv;
priv->relative_motion_filter = filter;
priv->relative_motion_filter_user_data = user_data;
}
/**
* clutter_evdev_set_keyboard_repeat:
* @evdev: the #ClutterDeviceManager created by the evdev backend

7
clutter/clutter/evdev/clutter-device-manager-evdev.h
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@ -76,6 +76,13 @@ void _clutter_device_manager_evdev_constrain_pointer (ClutterDeviceManagerEvdev
float *new_x,
float *new_y);
void _clutter_device_manager_evdev_filter_relative_motion (ClutterDeviceManagerEvdev *manager_evdev,
ClutterInputDevice *device,
float x,
float y,
float *dx,
float *dy);
void _clutter_device_manager_evdev_dispatch (ClutterDeviceManagerEvdev *manager_evdev);
static inline guint64

12
clutter/clutter/evdev/clutter-evdev.h
View File

@ -97,6 +97,18 @@ void clutter_evdev_set_pointer_constrain_callback (ClutterDeviceManager
gpointer user_data,
GDestroyNotify user_data_notify);
typedef void (*ClutterRelativeMotionFilter) (ClutterInputDevice *device,
float x,
float y,
float *dx,
float *dy,
gpointer user_data);
CLUTTER_AVAILABLE_IN_MUTTER
void clutter_evdev_set_relative_motion_filter (ClutterDeviceManager *evdev,
ClutterRelativeMotionFilter filter,
gpointer user_data);
CLUTTER_AVAILABLE_IN_1_16
void clutter_evdev_set_keyboard_map (ClutterDeviceManager *evdev,
struct xkb_keymap *keymap);

7
clutter/clutter/evdev/clutter-seat-evdev.c
View File

@ -405,6 +405,13 @@ clutter_seat_evdev_notify_relative_motion (ClutterSeatEvdev *seat,
if (!_clutter_input_device_get_stage (input_device))
return;
_clutter_device_manager_evdev_filter_relative_motion (seat->manager_evdev,
input_device,
seat->pointer_x,
seat->pointer_y,
&dx,
&dy);
new_x = seat->pointer_x + dx;
new_y = seat->pointer_y + dy;
event = new_absolute_motion_event (seat, input_device,