Don't require a quirk update, just enable this by default for all tablets. If
we get a proximity out event at the right time, the quirk is disabled for that
tablet for the rest of its lifetime. And it's virtually impossible to have a
false positive here anyway - you cannot hold the pen still enough to not
trigger events for 50ms.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
We expect the kernel to transition properly for us, e.g. BTN_TOOL_PEN goes to
0, BTN_TOOL_ERASER goes to 1. Two cases have surfaced recently where this
doesn't happen and debugging this takes time - so let's warn about it to make
it obvious.
Example 1: https://github.com/linuxwacom/libwacom/issues/70
Example 2: https://gitlab.freedesktop.org/libinput/libinput/issues/259
This is just a warning, nothing more. We should just handle that case
accordingly but that requires more effort.
Fixes#260
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Still not great and probably makes any professional designer's eyes bleed, but
at least it's more readable now.
Changes:
- spacing after param name so they don't cuddle up with the description
- color changes and background image removals to drop the doxygen default look
- font size changes to not make things overrun
- font family change to make the function prototypes readable
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
All "goto err" resides after fd have been properly initialized.
Fixes "Comparison is always true because fd >= 0." warning by LGTM.
Signed-off-by: Konstantin Kharlamov <Hi-Angel@yandex.ru>
The button up debouncing states mirror the button down states with the
addition of the spurious debouncing states. Rename the states to better
show this symmetry.
Multitap sequences (more than 2 taps) had a 180ms timer set only on press,
not on release.
New taps within those 180ms could either trigger multitap+drag or another
multitap (for N+1 taps), resetting the timer on press once again.
If no new tap appears within those 180ms, the sequence was considered
complete.
This behavior differed from regular taps: for the very first tap of a
sequence the timer was set both on touch and on release.
The multitap timing caused misdetection of triple-tap-and-drag sequences as
the timer was hit frequently. Some of those were correctly detected, others
as tripletap only.
Changing the timer to be set on press **and** release gives us a more lenient
timeout. 180ms for tap-and-drag and 180ms for the next tap down after
release. This was also the behavior for the xorg synaptics driver.
Note that quadruple-tap-and-drag didn't suffer from this because the timeout
resulted in double-tap + double-tap-and-drag. Which has the same
user-visible effect.
We want to use this from the tests as well soon, so let's move it to a more
generic location. This also changes the API to be slightly more sensible, a
free() is the same cost (and safer) than passing a static buffer in and hoping
we didn't get the size wrong.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
When exiting RELEASE_DELAYED state, do not transition into states to detect
the need for spurious mode (RELEASE_WAITING, MAYBE_SPURIOUS).
RELEASE_DELAYED is only entered when spurious mode is enabled, there is no
need to detect the need for spurious mode again.
When using button scrolling, a hardcoded delay of 200 milliseconds between
button down and scroll events being emitted makes fast scrolling gestures feel
clunky and sometimes fail entirely. This feature comes from
xf86-input-mouse, was copied into xf86-input-evdev and reimplemented in
libinput.
This was, as far as can be determined, to allow right clicks without
triggering scrolling. libinput now also has distance triggers (2bbf4a0117)
and sends button events if no movement has happened for long clicks,
regardless of the delay.
The 200ms delay is thus not really necessary anymore, let's drop it to 38ms
which is just above the 3-event threshold for 8/10/12ms intervals which is
most devices.
Fixes#237
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
When the touch arbitration is reset to ARBITRATION_NOT_ACTIVE, the proximity
timer is set for 90ms to avoid erroneous touches (see 2a378beab for the
reason).
If the device is removed within those 90ms, the timer is never cancelled,
leading to an assert on cleanup.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
On the Asus Vivobook Flip 14, the tablet mode switch is unreliable and always
on. Instead of marking every device as 'do not suspend', just mark the tablet
switch itself.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
If the tilt angle on tip down is not 0 set the touch arbitration to a
rectangle around the assumed position of the hand. This assumed position is
right of the tip for a rightwards tilt and left of the tip for a leftwards
tilt (i.e. left-handed mode). The rectangle is 200x200mm with a 20x50mm
NW of the tip or NE for left-handed. In other words, if the period below is
the tip, the rectangle looks like this:
+-----------+ +-----------+
| . | <- for rightwards tilt | . |
| | | |
| | | |
| | for leftwards tilt -> | |
+-----------+ +-----------+
Touches within that rectangle are canceled, new touches are ignored. As the
tip moves around the rectangle is updated but touches are only cancelled on
the original tip down. While the tip is down, new touches are ignored in the
exclusion area but pre-existing touches are not cancelled.
This is currently only implemented in the fallback interface, i.e. it will
only work for Cintiqs.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This enables us to specify the location that needs to be arbitrated, rather
than just disabling the whole device altogether. This patch just adds the
hooks, no implementation.
This is internal API only, one backend can specify an area in mm which gets
converted to device coordinates in the target device and arbitrated there.
Right now, everything simply passes NULL.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
If we don't have tool-based palm detection, make sure our touch is labelled as
"not palm" during touch down. Otherwise that slot remains on palm forever if
it gets tagged as palm through some other means.
This currently has no effect, nothing in the code would label the touch as
palm. This is prep work for better touch arbitration.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This enables us to change the types of touch arbitration, with the focus on
allowing location-based touch arbitration as well as the more generic "disable
everything".
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
When a hand is resting on a pen+touch device, lifting the hand may remove the
stylus from proximity before the hand leaves the surface. If the kernel
performs touch arbitration, this triggers a touch down on proximity out,
followed by a touch up immediately after when the hand stops touching.
This can cause ghost touch events. Prevent this by using a timer-based
arbitration toggle.
Same as 2a378beab0 but for the fallback
interface.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This leaves a bug open, on a Lenovo T440 generation touchpad with top software
buttons, the button will not be leased correctly. This is caused by
device->is_suspended=true by the time we try to clear the state and the
button events thus getting filtered.
This used to affect all touchpads, this patch just moves it so it only affects
the T440-like devices now.
Fixes#233
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
If a middle-button-emulating device is removed with one button down, the timer
never gets cancelled and triggers an assert during device removal.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
An emulated button is recorded as BTN_MIDDLE in the key down mask. If the
device is removed in that state, the BTN_MIDDLE event processed triggers
an assertion when we try to send out the event twice.
Fixes#201
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
If a device was removed while a button was held down and within the timeout,
the timer was never cancelled (and removed from the timer list), triggering an
assert during device removal.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
It's missing INPUT_PROP_BUTTONPAD but working kernel drivers prove to be
elusive. Meanwhile, add a quirk here that force-enables this bit.
Fixes#177
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
