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xfree86: document pointer acceleration in xorg.conf.man 

Signed-off-by: Simon Thum <simon.thum@gmx.de>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Fernando Carrijo <fcarrijo@yahoo.com.br>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
(cherry picked from commit 0722c287a4)

Conflicts:

	hw/xfree86/doc/man/xorg.conf.man.pre
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Simon Thum 2010-01-19 17:34:49 +13:00 committed by Peter Hutterer
parent c5e5a7adf0
commit b7e903526c
1 changed files with 44 additions and 0 deletions
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hw/xfree86/doc/man/xorg.conf.man.pre
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@ -882,6 +882,50 @@ may be reattached or set floating at runtime.
.TP 7
.BI "Option \*qSendDragEvents\*q \*q" boolean \*q
Send core events while dragging. Enabled by default.
.PP
For pointing devices, the following options control how the pointer
is accelerated or decelerated with respect to physical device motion. Most of
these can be adjusted at runtime, see the xinput(1) man page for details. Only
the most important acceleration options are discussed here.
.TP 7
.BI "Option \*qAccelerationProfile\*q \*q" integer \*q
Select the profile. In layman's terms, the profile constitutes the "feeling" of
the acceleration. More formally, it defines how the transfer function (actual
acceleration as a function of current device velocity and acceleration controls)
is constructed. This is mainly a matter of personal preference.
.PP
.RS 6
.nf
.B " 0 classic (mostly compatible)"
.B "-1 none (only constant deceleration is applied)"
.B " 1 device-dependent"
.B " 2 polynomial (polynomial function)"
.B " 3 smooth linear (soft knee, then linear)"
.B " 4 simple (normal when slow, otherwise accelerated)"
.B " 5 power (power function)"
.B " 6 linear (more speed, more acceleration)"
.B " 7 limited (like linear, but maxes out at threshold)"
.fi
.RE
.TP 7
.BI "Option \*qConstantDeceleration\*q \*q" real \*q
Makes the pointer go
.B deceleration
times slower than normal. Most useful for high-resolution devices.
.TP 7
.BI "Option \*qAdaptiveDeceleration\*q \*q" real \*q
Allows to actually decelerate the pointer when going slow. At most, it will be
.B adaptive deceleration
times slower. Enables precise pointer placement without sacrificing speed.
.TP 7
.BI "Option \*qAccelerationScheme\*q \*q" string \*q
Selects the scheme, which is the underlying algorithm.
.PP
.RS 7
.nf
.B "predictable default algorithm (behaving more predictable)"
.B "lightweight old acceleration code (as specified in the X protocol spec)"
.B "none no acceleration or deceleration"
.SH "DEVICE SECTION"
The config file may have multiple
.B Device