Document the top software button behavior

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer 2014-06-12 11:55:21 +10:00
parent 1db5866cee
commit 2e289b2026

View file

@ -74,6 +74,27 @@ extern "C" {
* button area.
* The exact behavior of the touchpad is implementation-dependent.
*
* Top software button area
* ========================
* On selected touchpads, the top area of the touchpad is a separate set of
* software buttons split into a left, middle and right button area.
* Pressing the touchpad down with a finger in those areas will generate
* clicks as shown in the diagram below:
*
* @code
+------------------------+
| LEFT | MIDDLE | RIGHT |
+------------------------+
| |
| LEFT |
| |
+------------------------+
| LEFT | RIGHT |
+------------------------+
* @endcode
* This behavior is enabled on the Lenovo *40 series (T440, T540, T240...)
* and the Lenovo Helix, Yoga S1 and Carbon X1 2nd.
*
* Clickfinger
* ===========
* On Apple touchpads, no button areas are provided. Instead, use a