Creates an empty context that is not hooked up to a device. Callers can then
add and remove devices to this context using libinput_path_add_device() and
libinput_path_remove_device().
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This allows multiple devices to share a single libinput context. The new
function returns the newly added device immediately. Unlike the udev seat
where devices may or may not be added - over the lifetime of the seat - a
path-based backend knows immediately if device exists or doesn't exist.
Returning the device is required by callers that have the event processing
separate from adding devices - by the time we have the DEVICE_ADDED event in
the queue we may have other events to process first. And the DEVICE_ADDED
event won't easily link to the path we gave it anyway, so it's hard to figure
out which DEVICE_ADDED event corresponds to the new device.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
The previous path backend created a libinput context attached to a single
device. This is insufficient when we need to use cross-device functionality.
One example of this cross-device functionality include disabling a touchpad
while the trackstick is in use (Lenovo T440 and related models).
This patch merely adds the infrastructure to support multiple devices for a
path backend. Follow-up patches add the function calls to add and remove
devices. This is needed by Xorg input drivers that still make use of the
server's device hotplug mechanisms but want to otherwise use libinput.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This reverts commit e8c20c7241.
Ooops, bad rebase. This accesses the device after it was already destroyed
which is not the intent of the patch.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
If we don't have capabilities we can deal with, return a different error so
the backends can handle it separately (they already do).
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
evdev_device_remove() already calls close(device->fd). Move the
close_restricted call there to avoid one privileged call in the backend and
one in the device. And move the open_restricted() into the evdev device too to
reduce the duplicated code in the two backends.
Update to one of the tests: since we'd now fail getting the device node from
the invalid /tmp path, the open_func_count is 0.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Since the device min/max x/y coordinates are inclusive, to get the
width/height one need to add one to (min x/y - max x/y).
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
The event represent pointer motions on a screen, so this information is
unnecessary. It could also be confused for meaning the provided
coordinate's direction being device specific.
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Instead of automatically transforming absolute coordinates of touch and
pointer events to screen coordinates, the user now uses the corresponding
transform helper function. This means the coordinates returned by
libinput_event_pointer_get_absolute_x(),
libinput_event_pointer_get_absolute_y(), libinput_touch_get_x() and
libinput_touch_get_y() has changed from being in output screen coordinate
space to being in device specific coordinate space.
For example, where one before would call libinput_event_touch_get_x(event),
one now calls libinput_event_touch_get_x_transformed(event, output_width).
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
This was a detail of the original version of the commit "evdev: Remove
EVDEV_TOUCH and with it evdev_device->caps" that got lost during porting.
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
By specifying that a device will not be read until the next time the
user calls libinput_dispatch(), if data is available, it will allow for
setting up initial configuration, such as tap button, output screen
size, acceleration parameters, etc.
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Before the seat reference would be decreased when a device was removed.
This could cause libinput_device_get_seat() to potentially return an
invalid pointer when a device was removed, its seat unreferenced and
destryoed.
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
This also makes DEVICE_ADDED/REMOVED events own a reference, which is
necessary to not have libinput_event_get_device() potentially returning
an invalid pointer.
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Higher values than 1 or -1 are legitimate on some devices, though not all mice
send wheel events other than 1/-1.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
There are now only two event classes and only two users of the event class.
It's easier to use the event type directly to see which event has references
and which one doesn't.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
These events are not a state of a single touchpoints but rather a notification
that all touchpoints finished processing. As such, they should have their own
type.
And make sure we actually send them when needed.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Slightly enhances the type-safety. A caller may now do something along the
lines of
struct libinput_event_pointer *ptrev;
ptrev = libinput_event_get_pointer_event(event);
if (!ptrev)
oops, that wasn't a pointer event
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
The event type itself says enough about the actual event type, we don't need
to have separate structs for every type.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Provide one top-level event for keyboard events: libinput_event_keyboard. The
event type specifies which subtype the event is anyway.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Now that the target of an event isn't exposed to the caller anymore, the
namespacing can be associated with a more intuitive one.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Replaced by specific accessor functions for context, seat and device. This
obsoletes the internal target as well, we just direcly ref the element we need
to instead of temporarily storing it in the target.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
After dropping seat evens, all events are now are associated with a device, so
provide a generic accessor function and drop the custom ones.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
seats are more a compositor concept than a concept of the input library. All
devices in a libinput context are associated with the seat given on creation
of the seat (maps to ID_SEAT in udev for the udev backend).
A logical seat may be assigned to a device (e.g. WL_SEAT) but this does not
necessarily map to the creation of the seat in the compositor.
Drop the seat events but keep seat objects around so that the caller can still
identify which seat a device belongs to.
If the libinput_seat_unref() in the udev backend destroys the seat, the device
list of that seat is invalid and we'd be accessing already freed bytes. To
avoid this, ref the seat before the device removal loop, then unref it once
we're done - that unref then may trigger the actual removal of the seat.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Returns the event type of the next event pending in the queue. For systems
that have the device init state separate from the actual event procesing
(read: xorg drivers) we need to be able to peek at the next event type to
check for the end of any initialization events (seat/device added) and the
beginning of actual device input events.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This event type is needed to notify callers that there is currently no
event waiting (in a follow-up patch). Also, it it avoids true/false
inconsistencies on event types (LIBINPUT_EVENT_ADDED_SEAT would otherwise be
the only FALSE event). While that's not technically necessary, it may prevent
the odd bug further down the road.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
We don't really support devices changing capabilities at runtime. The kernel
has no ability to tell us when this happens on an already-opened device and
the few devices that can literally change physical capabilities (e.g. the
wiimote) open up extra kernel devices instead of modifying the existing one.
Thus, we don't need to notify about devices changing capabilities.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Hooking libinput up to udev isn't always possible, especially if libinput were
to be used in the X server which already has the udev handling built-in.
Add an option to create a context from a path.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
libinput_suspend() already causes the fds to be closed, devices and seats to
be removed, etc. Call it before libinput_destroy() to reduce the
backend-specific code.
No real functional change, the udev backend already did this anyway.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
When the last device is removed from a seat, destroy the seat.
This guarantees seat removal events on libinput_suspend() as well.
Note that the seat must be manually unlinked, we can't rely on the unlinking
in libinput_seat_destroy. After the event, the seat's refcount is always > 1,
so the seat will live on until the event is destroyed. We need to make sure
it's not in the list anymore though.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Use the seat's internal refcounting to up the reference each time we have a
device using it. This fixes the issue with seats being created but never
actually removed by anything.
udev_seat_get_named() will now return a seat with refcount 1 for a newly
created seat, or just up the refcount for the seat if it already exists.
This requires that the ADDED_SEAT and REMOVED_SEAT events up the refcount of
the seat as well: a device may be removed before the event is processed,
without the refcount the seat would be destroyed (if it's the last device on
the seat).
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
