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Diffstat (limited to 'man/libinput.man')
| -rw-r--r-- | man/libinput.man | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/man/libinput.man b/man/libinput.man index c9fec4e..6ed4cdd 100644 --- a/man/libinput.man +++ b/man/libinput.man @@ -160,6 +160,16 @@ Enables a scroll method. Permitted values are Not all devices support all options, if an option is unsupported, the default scroll option for this device is used. .TP 7 +.BI "Option \*qScrollPixelDistance\*q \*q" int \*q +Sets the movement distance, in "pixels", required to trigger one logical +wheel click. This option only applies to the scroll methods +.BI twofinger, +.BI edge, +.BI button. +See section +.B SCROLL PIXEL DISTANCE +for more details. +.TP 7 .BI "Option \*qSendEventsMode\*q \*q" (disabled|enabled|disabled-on-external-mouse) \*q Sets the send events mode to disabled, enabled, or "disable when an external mouse is connected". @@ -279,6 +289,10 @@ Indicates which scroll methods are available on this device. 3 boolean values (8 bit, 0 or 1), in order "two-finger", "edge", "button". Indicates which scroll method is currently enabled on this device. .TP 7 +.BI "libinput Scroll Pixel Distance" +1 32-bit value (nonzero, with additional implementation-defined range checks). +Changes the movement distance required to trigger one logical wheel click. +.TP 7 .BI "libinput Send Events Modes Available" 2 boolean values (8 bit, 0 or 1), in order "disabled" and "disabled-on-external-mouse". Indicates which send-event modes are available @@ -396,6 +410,17 @@ it takes left-handed-ness into account. .TP This feature is provided by this driver, not by libinput. +.SH SCROLL PIXEL DISTANCE +The X server does not support per-pixel scrolling but it does support +smooth scrolling. All scroll events however are based around a logical +unit of scrolling (traditionally corresponding to a wheel click). +It is thus not possible to scroll by 10 pixels, but it is possible for a +driver to scroll by 1/10th of a logical wheel click. +.PP +libinput provides scroll data in pixels. The \fBScrollPixelDistance\fR +option defines the amount of movement equivalent to one wheel click. For +example, a value of 50 means the user has to move a finger by 50 pixels to +generate one logical click event and each pixel is 1/50th of a wheel click. .SH BUGS This driver does not work with \fBOption \*qDevice\*q\fR set to an event node in \fI/dev/input/by-id\fR and \fI/dev/input/by-path\fR. This can be |