3mm is too large, especially on fine-grained scroll motions. Since we
already use the hysteresis to defuzz the current touchpad point, having a
slower threshold here should not cause any adverse motions.
This affects the pinch gestures too and needs a minor test adjustment. The
atmel hover device's resolution is low enough that we trigger a >1 degree
angle now, make the movement a bit more finegrained.
https://bugs.freedesktop.org/show_bug.cgi?id=91364
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Regression introduced in 8302860.
Reading the DPI before evdev_configure_device makes it lose on the trackpoint
flag, causing libinput to ignore the POINTINGSTICK_CONST_ACCEL property.
8302860 moved it up so we can init accel based on the DPI, this patch simply
moves istart t before the acceleration is initialized.
https://bugs.freedesktop.org/show_bug.cgi?id=91369
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Removes some dead assignments, an unused function, and
uses %d format specifier for int.
Signed-off-by: Thomas Hindoe Paaboel Andersen <phomes@gmail.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
obsolete since 8658ff159d. And once we remove
that all we checkf or is Apple models which we set a resolution for in
systemd. So that check is obsolete now too.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Thumb detection interfered with gestures a fair bit but it shouldn't. A pinch
gesture with a thumb is a fairly natural move so we shouldn't cancel that.
A swipe gesture with a thumb on the touchpad - well, don't do that. No need
for code here.
Reported-by: Carlos Garnacho <carlosg@gnome.org>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Carlos Garnacho <carlosg@gnome.org>
For Elantech touchpads, we know that the resolution is 31u/mm (800dpi) for
v1-v3 firmware. Set this as a hint until we get either the kernel or systemd
to set this for us.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Now that we have all devices init a fixed resolution we don't need code to
handle custom cases anymore.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
The previous approach of using the axis ranges and approximating parameters
based on the x/y axis range clutters up the code and is generally unreliable.
If we look at Synaptics touchpads, the resolution ranges from 42 to 130 while
the axes stay the same axis range. Other touchpads likely have a similar
variation across the various models.
Let's make this simpler in code: unless we know otherwise, simply assume a
default-sized touchpad.
Anything that deviates from that can be fixed with the new hwdb entries to
provide a more correct setting.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Touchpads, notably Elantech, ALPS and bcm5974 don't provide x/y resolution
until recent generations.
Add a new property, LIBINPUT_ATTR_SIZE_HINT, that provides size information to
libinput. Note that this property *does not* override true resolution values,
it is only used when the resolution is missing. It is used merely as an
approximate size hint.
If the resolution for a specific device is known it should be added to the
udev hwdb so it can be set globally. See the bcm5974 entries here:
http://cgit.freedesktop.org/systemd/systemd/tree/hwdb/60-evdev.hwdb.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
This note doesn't add anything, the delta to the last changed is the same as
the delta to the last event, otherwise it'd be 0.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
The only two callers passed in the fake resolution anyway, so we don't need
extra parameters here.
We don't allow devices with only x or y resolution set, either both or none.
And we can use libevdev_set_abs_resolution() rather than handling absinfo
structs.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Most thumbs are detected a few events into the sequence. Work this into parts
of the tapping state machine. Only the most common use-case is handled here -
if the first finger ends up being marked as a thumb, we return to the idle
state and ignore that touch sequence.
At any other state, we handle thumbs like any other finger.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
All touchpad recordings seen so far show that a value above 100 is definitely
a thumb or a palm. Values below are harder to discern, and the same isn't true
for touchpads supporting ABS_PRESSURE instead of ABS_MT_PRESSURE.
The handling of a touch is as outlined in tp_thumb_detect:
* thumbs are ignored for pointer motion
* thumbs cancel gestures
* thumbs are ignored for clickfinger count
* edge scrolling doesn't care either way
* software buttons don't care either way
* tap: only if thumb on begin
The handling of thumbs while tapping is the simplest approach only, more to
come in follow-up patches.
Note that "thumb" is the synonym for "this touch is too big to be a
fingertip". Which means that a light thumb touch will still be counted as a
finger. The side-effect here is that thumbs resting a the bottom edge of the
touchpad will almost certainly not trigger the pressure threshold because
most of the thumb is off the touchpad.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Watching a colleague try clickfinger right-click after enabling it the first
time showed that the vertical distance is too small. Increase it to 30mm
instead.
Increase the allowed spread between fingers to 40x30mm, but check if one of
the fingers is in the bottom-most 20mm of the touchpad. If that's the case,
and the touchpad is large enough to be feasable for resting a thumb on it,
discard the finger for clickfinger count.
If both fingers are in that area or one finger is in the area and they're
really close together, the fingers count separately and are not regarded as
thumb.
https://bugs.freedesktop.org/show_bug.cgi?id=91046
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Some tablets cannot be differentiated by pid/vid alone, use the device path
instead - that gives libwacom the ability to extract the information required
to handle the device (libwacom doesn't open the path, it just reads through
the sysfs entry of the device).
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
For start/end, dx/dy is always 0.0, and there is no need to make calling this
function for start/end a caller bug. It just unnecessarily complicates the
caller's codepath.
Same for get_angle
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Implement touchpad pinch (and rotate) gesture support.
Note that two two-finger scrolling tests are slightly tweaked to assure that
there is enough touch movement to allow the scroll-or-pinch detect code to do
its work.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Jason Gerecke <jason.gerecke@wacom.com>
Extend the touchpad gesture API with pinch gestures. Note that this
new API offers a single event stream for both pinch and rotate data, this
is deliberate as some applications may be interested in getting both at
the same time. Applications which are only interested in one or the other
can simply ignore the other.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Jason Gerecke <jason.gerecke@wacom.com>
Add support for swipe gestures.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Jason Gerecke <jason.gerecke@wacom.com>
For touchscreens we always send raw touch events to the compositor, and the
compositor or application toolkits do gesture recognition. This makes sense
because on a touchscreen which window / widget the touches are over is
important context to know to interpret gestures.
On touchpads however we never send raw events since a touchpad is an absolute
device which primary function is to send pointer motion delta-s, so we always
need to do processing (and a lot of it) on the raw events.
Moreover there is nothing underneath the finger which influences how to
interpret gestures, and there is a lot of touchpad and libinput configuration
specific context necessary for gesture recognition. E.g. is this a clickpad,
and if so are softbuttons or clickfinger used? What is the size of the
softbuttons? Is this a true multi-touch touchpad or a semi multi-touch touchpad
which only gives us a bounding box enclosing the fingers? Etc.
So for touchpads it is better to do gesture processing in libinput, this commit
adds an initial implementation of a Gesture event API which only supports swipe
gestures, other gestures will be added later following the same model wrt,
having clear start and stop events and the number of fingers involved being
fixed once a gesture sequence starts.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Jason Gerecke <jason.gerecke@wacom.com>
Motion normalization does not work well for devices below the default 1000dpi
rate. A 400dpi mouse's minimum movement generates a 2.5 normalized motion,
causing it to skip pixels at low speeds even when unaccelerated.
Likewise, we don't want 1000dpi mice to be normalized to a 400dpi mouse, it
feels sluggish even at higher acceleration speeds.
Instead, add a custom acceleration method for lower-dpi mice. At low-speeds,
one device unit results in a one-pixel movement. Depending on the DPI factor,
the acceleration kicks in earlier and goes to higher acceleration so faster
movements with a low-dpi mouse feel approximately the same as the same
movement on a higher-dpi mouse.
https://bugzilla.redhat.com/show_bug.cgi?id=1231304
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Currently unused, but store the ratio of DPI:default DPI for later use.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
This simply doesn't work for low-dpi mice. Normalizing a 400dpi mouse to a
1000dpi mouse forces a minimum movement of 2.5 units and the resulting pixel
jumps. It is impossible for the caller to detect whether the jump was caused
by a single motion or multiple motion events.
This is technically an API break, but not really.
The accelerated data was already relatively meaningless, even if normalized as
the data did not correspond predictably to any input motion (unless you know
the implementation acceleration function in the caller). So we can drop the
mention from there without expecting any ill effects in the caller.
The unaccelerated data was useless for low-dpi mice and could only be used to
measure the physical distance of the mouse movement - something not used in
any caller we're aware of (if needed, we can add that functionality as a
separate call). Dropping motion normalization for unaccelerated deltas also
restores true dpi capabilities to users of that API, mostly games that want to
make use of high-dpi mice.
This is a simplified patch, the normalization is still in place for most of
libinput, it merely carries the original coordinates in the event itself.
In the case of touchpads, the coordinates are unnormalized into the x-axis
coordinate space as per the documentation.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Deceleration at low speeds is intended to enhance precision when moving the
pointer slowly. However, the adaptive deceleration we used was badly
calibrated, at slow-but-normal speeds the pointer became too slow to manouver.
We don't want to drop deceleration completely, the subpixel precision it
provides is useful. And it also helps those that can't move a 1000dpi mouse by
exactly one unit.
Make the adaptive deceleration steeper so it only kicks in at extremely slow
motions and defaults to 1 at anything resembling normal movement (i.e. pointer
moves like the physical device does).
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Tested on three laptops here, Lenovo T61, X220 and an HP EliteBook (?), all
with small touchpads. It's hard to have a hand position where the palm touches
the touchpad while using the trackpoint. So we might as well save us the
effort of monitoring events and enabling/disabling it on demand.
As a side-effect this fixes 1233844, but that's more a coincidence.
https://bugzilla.redhat.com/show_bug.cgi?id=1233844
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
