From 7d20c9bf38d3d47adc7fb1a70faa370dda1a390c Mon Sep 17 00:00:00 2001 From: Chase Douglas Date: Fri, 9 Dec 2011 13:32:35 -0800 Subject: 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 Signed-off-by: Chase Douglas --- specs/XI2proto.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'specs') 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. -- cgit v1.2.1