[PATCH wayland v2] protocol: Clarify pointer axis event
jadahl at gmail.com
Wed Oct 3 13:50:55 PDT 2012
Pointer axis events are in the same coordinate space as motion events.
Signed-off-by: Jonas Ådahl <jadahl at gmail.com>
protocol/wayland.xml | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/protocol/wayland.xml b/protocol/wayland.xml
index 5e56cb8..31243a5 100644
@@ -864,6 +864,21 @@
<description summary="axis event">
Scroll and other axis notifications.
+ For scroll events (vertical and horizontal scroll axes), the
+ value parameter is the length of a vector along the specified
+ axis in a coordinate space identical to those of motion events,
+ representing a relative movement along the specified axis.
+ For devices that support movements non-parallel to axes multiple
+ axis events will be emitted.
+ When applicable, for example for touch pads, the server can
+ choose to emit scroll events where the motion vector is
+ equivalent to a motion event vector.
+ When applicable, clients can transform its view relative to the
+ scroll distance.
<arg name="time" type="uint"/>
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