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libinput-measure-touch-size(1) FreeBSD General Commands Manual
NAME
libinput-measure-touch-size - measure touch size and orientation of
devices
SYNOPSIS
libinput measure touch-size [--help] [options] [/dev/input/event0]
DESCRIPTION
The libinput measure touch-size tool measures the size and orientation
of a touch as provided by the kernel. This is an interactive tool.
When executed, the tool will prompt the user to interact with the touch
device. On termination, the tool prints a summary of the values seen.
This data should be attached to any touch-size-related bug report.
This is a debugging tool only, its output may change at any time. Do
not rely on the output.
This tool usually needs to be run as root to have access to the
/dev/input/eventX nodes.
OPTIONS
If a device node is given, this tool opens that device node. Otherwise,
this tool searches for the first node that looks like a touch-capable
device and uses that node.
--help Print help
--touch-thresholds="down:up"
Set the logical touch size thresholds to down and up,
respectively. When a touch exceeds the size in down it is
considered logically down. If a touch is logically down and
goes below the size in up, it is considered logically up. The
thresholds have to be in device-specific pressure values and it
is required that down >= up.
--palm-threshold=N
Assume a palm threshold of N. The threshold has to be in
device-specific pressure values.
If the touch-thresholds or the palm-threshold are not provided, this
tool uses the thresholds provided by the device quirks (if any) or the
built-in defaults.
LIBINPUT
Part of the libinput(1) suite
libinput-measure-touch-size(1)