At least on MacBooks, the host emulates two clicks 8ms apart in response to a
doubletap. Those clicks are filtered by our debouncing code.
Since these are emulated devices anyway and by definition cannot have a stuck
button, let's tag them so we don't enable the debouncing code. If the button
of the physical device is stuck, that's a problem that needs to be fixed in
the host system.
Fixes#158
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
The POSIX version of basename modifies the string (and therefore crashes
on static strings), so use safe_strdup before calling it.
glibc provides a POSIX version when libgen.h is included.
FreeBSD 12 provides a POSIX version when nothing is included, which was
causing a segfault.
Using the POSIX version correctly is the right way to avoid any such issues.
If a 2fg scroll motion starts with both fingers in the bottom button area and
one finger moves into the main area before the other, we used to send motion
events for that finger. Once the second finger moved into the main area the
scroll was detected correctly but by then the cursor may have moved out of the
intended focus area.
We have two transitions where we may start sending motion events: when we move
out of the bottom area and when the finger moves by more than 5mm within the
button area. In both cases, check for any touches that are in the
bottom area and started at the 'same' time as our moving touch. Mark those as
'moved' to release them for gestures so we get the right finger count and
axis/gesture events instead of just motion events.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
There's one state with a name longer than allocated but it's virtually never
triggered so let's just ignore the misalignment in that case.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
The shape of the average hand implies that two fingers down within the lower
thumb area (the bottom few mm of the touchpad) cannot be thumbs without
significant contortion. So let's not mark them as thumb.
Fixes#126
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
We rely on the udev keyboard builtin to set the fuzz but that builtin isn't
run during udevadm test. So running sudo udevadm test shows the LIBINPUT_FUZZ
properties the first time round (still set from boot), but not the second time.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
tp_detect_thumb_while_moving() assumes that of the 2 fingers down, at least
one must be in TOUCH_UPDATE, otherwise we wouldn't have a speed to analyze for
thumb.
If a touch starts in HOVERING and exceeds the speed limit, we were previously
increasing the 'exceeded count'. This later leads to an assert() in
tp_detect_thumb_while_moving() when the second finger comes down because
although we have multiple fingers, none of them are in TOUCH_UPDATE.
This only happens when fingers 2 and 3 come down in the same event frame,
because then we have nfingers_down at 2 (the hovering one doesn't count) but
we don't yet have a finger in TOUCH_UPDATE.
Fix this twofold, first by now calculating the speed on anything but
TOUCH_UPDATE. And second by force-resetting the speed count on
TOUCH_BEGIN/TOUCH_END so we definitely cover all the hover transitions.
Fixes#150
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
When we disable the touch device, any existing touches should be cancelled,
not just released.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This touchpad stops sending pressure data after the first frame of the second
finger down. If the initial pressure is too light, the finger doesn't get
detected even when the pressure increases in the future.
This thing is from 2014, so let's just disable the pressure axes on it
and skip the pressure-based touch detection code. Let's hope that it doesn't
also have ghost touches on light interactions...
Fixes#145
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Anything that merely requires a once-off check during initialization can just
use the quirks directly, no need to copy them over to the model flags.
Fixes#146
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Fix libinput_event_destroy call by passing the correct parameter (event) in the
example code.
Signed-off-by: Diego Rondini <diego.rondini@kynetics.com>
The hwdb match entry used to be this one:
libinput:name:*Elan Touchpad*:dt:*
LIBINPUT_ATTR_PRESSURE_RANGE=10:8
from commit 596777a314. It was intended to match
for devicetree only but the way the udev rules were composed, it ended up
matching on any system.
Restore that for all systems to have compatibility with 1.11. For this one,
let's also add the resolution hint and hope that that works too.
Fixes#140
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Was 0x800 in the hwdb, became 0x8000 in th quirks transition because of
inflation, but let's pretend the economy is back to normal and devalue our
currency. (aka: "it was a typo", whoops and whatnot)
https://bugs.freedesktop.org/show_bug.cgi?id=104415
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
The previous check only worked if sizeof(long) > sizeof(int). Rather than be
fancy about it, just cast to a signed long, check for negativity and continue
based on that.
Fixes#137
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
All we do now is to set the fuzz, so we only ever need to care about this when
a device has absolute axes.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This was removed accidentally as part of a9ef4ba1f3 and then completely dropped in
870ddce9e4 when the hwdb was deprecated completely. The model quirks call
is also the one that reads and sets the LIBINPUT_FUZZ property, effectively
making that code a noop.
Fixes#138
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
We may get a pointer jump on tip down/up, see #128. For absolute coordinates
we reset the history to avoid smoothing across that jump but deltas still used
to be calculated based on the previous position to the current one. This
can result in a large jump on tip down.
Since the delta is supposed to be useful (and not physically accurate, see the
docs), let's force it to 0/0 on tip down/up to avoid that scenario.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Because we're doing axis smoothing, we may get a nonzero delta between events
even when the real axis hasn't updated. Make sure the bit is set in this case.
One part of #128
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Bit of a weird diff, print_tablet_axes() was moved up and a single call to
print_tablet_axes() was added in the tablet tip event handler.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
On Dell i2c touchpads, the controller appears to go to sleep after about 1s of
inactivity on the touchpad. The wakeup takes a while so on the next touch, we
may see a pointer jump, specifially on the third event (i.e. touch down,
event, event+jump). The MSC_TIMESTAMP value carries a hint for what's
happening here, the event sequence for a touchpad with scanout intervals
7300µs is:
...
MSC_TIMESTAMP 0
SYN_REPORT
...
MSC_TIMESTAMP 7300
SYN_REPORT +2ms
...
MSC_TIMESTAMP 123456
SYN_REPORT +7ms
...
MSC_TIMESTAMP 123456+7300
SYN_REPORT +8ms
Note how the SYN_REPORT timestamps don't reflect the MSC_TIMESTAMPS.
This patch adds a quirk activate MSC_TIMESTAMP watching. When we do so, we
monitor for a 0 MSC_TIMESTAMP. Let's assume that the first event after that is
the interval, then check the third event. If that third event's timestamp is too
large rewrite the touches' motion history to reflect the correct timestamps,
i.e. instead of the SYN_REPORT timestamps the motion history now uses
"third-event SYN_REPORT timestamps minus MSC_TIMESTAMP values".
The pointer accel filter code uses absolute timestamps (#123) so we have to
restart the pointer acceleration filter when we detect this jump. This allows
us to reset the 0 time for the filter to the previous event's MSC_TIMESTAMP
time, so that our new large delta has the correct time delta too. This
calculates the acceleration correctly for that window.
The result is that the pointer is still delayed by the wake-up window (not
fixable in libinput) but at least it ends up where it should've.
There are a few side-effects: thumb, gesture, and hysteresis all still use the
unmodified SYN_REPORT time. There is a potential for false detection of either
of these now, but we'll have to fix those as they come up.
Fixes#36
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
