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Benjamin Tissoires 128f98c43b evdev: fix device_transform_ functions 
X and Y are li_fixed_t, which is 24.8 fixed point real number.
li_fixed_t max is thus ~8388607.

On a touchscreen with a range of 32767 values (like a 3M sensor), and
mapped on monitor with a resolution of 1920x1080, we currently have:
(x - li_fixed_from_int(device->abs.min_x)) * width == 62912640

which is 7 times bigger than li_fixed_t max.

Force a cast to uint64_t to keep the precision of the sensor.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2014-02-20 11:30:08 +10:00
doc doc: extract static members as well 2013-12-21 12:11:03 +01:00
m4 Port evdev code to be used as a shared library 2013-11-12 22:37:20 +01:00
src evdev: fix device_transform_ functions 2014-02-20 11:30:08 +10:00
test test: Add scale li_fixed overflow test 2014-02-20 11:30:08 +10:00
tools event-debug: Display touch event seats as signed integer 2014-02-19 22:16:39 +01:00
.gitignore Add the framework for a test suite 2014-01-10 14:17:06 +10:00
autogen.sh Port evdev code to be used as a shared library 2013-11-12 22:37:20 +01:00
configure.ac tools: add a tool for basic event debugging 2014-01-31 14:57:19 +10:00
COPYING Add COPYING file 2014-01-31 14:57:18 +10:00
Makefile.am tools: add a tool for basic event debugging 2014-01-31 14:57:19 +10:00
README Port evdev code to be used as a shared library 2013-11-12 22:37:20 +01:00

README 

This library does processing on input device events while providing an API
to the the user used for delegating more useful input events.

Input event processing includes scaling touch coordinates, generating
pointer events from touchpads, pointer acceleration, etc.

It is based on the input code from the weston Wayland reference compositor.

It has no other dependencies than libmtdev and supports only evdev devices.