diff options
| author | Chase Douglas <cndougla@cndougla.(none)> | 2011-12-09 13:32:35 -0800 |
|---|---|---|
| committer | Chase Douglas <chase.douglas@canonical.com> | 2011-12-12 13:46:07 -0800 |
| commit | 7d20c9bf38d3d47adc7fb1a70faa370dda1a390c (patch) | |
| tree | 976775e98972ed93560cc0f56d06f3957e0efee2 | |
| parent | c4703fd9d97c962d5c599a7f826a9a11fc91ee70 (diff) | |
Touch IDs must be globally unique
XIAllowEvents with a master device and a touch ID must uniquely identify
a touch sequence. If touch IDs were unique per slave device, multiple
slave devices could have valid sequences with the same touch ID, and the
sequences may both be grabbed through the same master device grab.
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
| -rw-r--r-- | specs/XI2proto.txt | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/specs/XI2proto.txt b/specs/XI2proto.txt index c467bb1..ba5f7b7 100644 --- a/specs/XI2proto.txt +++ b/specs/XI2proto.txt @@ -2151,7 +2151,7 @@ Touch tracking IDs are provided in the detail field of touch events. Its value is always provided in every touch event. Tracking IDs are represented as unsigned 32-bit values and increase in value for each new touch, wrapping back to 0 upon reaching the numerical limit of IDs. IDs are -unique per each slave touch device. +globally unique. Touch events do not generate enter/leave events. |