This makes two-finger scrolling in straight lines easier, while still
allowing free/diagonal movement. It works in three stages:
1) Initial movement
- For the first few millimeters, scroll movements within 30 degrees
of horizontal or vertical are straightened to 90-degree angles.
- Scroll movements close to 45 degree diagonals are unchanged.
- If movement continues very close to straight horizontal or
vertical, stage 2 begins and the axis lock engages.
- If movement continues along a diagonal, stage 2 is skipped and
free scrolling is immediately enabled.
2) Axis lock
- If the user scrolls fairly closely to straight vertical, no
horizontal movement will happen at all, and vice versa.
- It is possible to switch between straight vertical and straight
horizontal, and the axis lock will automatically change.
- If deliberate diagonal movement is detected at any point, stage
3 begins and the axis lock disengages.
3) Free scrolling
- Scrolling is unconstrained until the fingers are lifted.
No touchpad gives us these events with a 0 delay, so let's not test for that.
This is required for adding timing-sensitive scroll code, see
https://gitlab.freedesktop.org/libinput/libinput/issues/101.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Having this as the generic "synaptics" touchpad in the tests is not helpful,
this touchpad is tiny and quite special these days.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Use the same blurb everywhere, changing from the old style MIT to the Expat
license we're using everywhere else.
Similar to bc9f16b40e
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
If the trackpoint gives us deltas with less than 10ms intervals, something is
wrong. Could be bad hardware, a glitch in the matrix or a discontinuity in
the otherwise appropriately named time-space continuum. Usually it's the
first.
Let's always set up trackpoint delta smoothening for 10ms to improve the
pointer speed calculation and avoid jerky behaviors. i.e. if a trackpoint
delta comes in below 10ms, pretend it came in with a 10ms interval for
calculating the speed.
Fixes https://gitlab.freedesktop.org/libinput/libinput/issues/104
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
The first event we receive is set to a 0ms offset anyway. Setting last_ms to 0
on the first event means the first two events have +0ms offset printed to the
log. Skip it, so the second event has the right offset.
This is human-readable data only, no effect on the recording file itself.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
A three-finger touch may cause slot N to end, in a frame after the
BTN_TOOL_TRIPLETAP. This causes tp->nfinger_down to be decremented to 2 as the
touch switches to MAYBE_END - which happens to be our num_slots. We exit early
and never restore the touch correctly.
Fix this by checking that the number of fake touches is equal to the slots, if
it is higher then we need to check for recovery.
Fixes https://gitlab.freedesktop.org/libinput/libinput/issues/99
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
We want to autoreplace this value where possible but not scale it to min/max,
this is effectively an enum. The same is true for slot/tracking id, so let's
add it here too.
Because it's an enum and 99% of the cases require MT_TOOL_FINGER, we always
fall back to that instead of using the axis_defaults that we use for other
axes.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
The necessary helpers to test for a touch event + one touch frame and the
extra case for the TOUCH_CANCEL in is_touch_event
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This used to do a lot more but now it can be handled as simple switch
statement. Bonus: we get to log a bug if we ever get here in NONE state.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Only one link leads to it and it doesnt (right now) fit into the hierarchy.
Let's get rid of the sphinx warning.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Switching from doxygen to sphinx broke a bunch of links because doxygen used
whatever the argument to @page was - and that usually had underscores. Sphinx
uses filenames (which use dashes) so now we have a bunch of old links going to
a 404. For the transition period at least, insert a custom 404 page for each
of those to tell users this doesn't exist anymore.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Things moved around, so let's have a custom 404 page where we can put
information in. This ist the barebones version, not sure if .htaccess is
supported.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
meson doesn't have configuration_data() in vcs_tag so we can only replace one
string. sphinx cannot include things in-line.
Since we want the git version to be replaced in random places, we need to put
it into rst_prolog in conf.py - but that's where we neet to replace other
things too. Work around this by generating a mini python module that returns
the git version, then call that in conf.py.
Side-bonus: we now have access to the full commit and the abbreviated commit.
Not that anything actually uses this...
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
No doxygen leftovers in README anymore, exspecially now that we don't use it
for doxygen anymore.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Now that we dropped autotools anyway, it's better to link to the meson version
of that blog post.
Related #96
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Anyone who's still on <= 1.8 either knows how to build it already or relies on
a distribution to do that for them. Drop the section.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
