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This CL updates the wl_touch interface with a shape and orientation event. The shape/orientation of a touch point is not relevant for most UI applications, but allows a better experience in some cases such as drawing apps. The events are used by the compositor to inform the client about changes in the shape and orientation of a touchpoint, which is approximated by an ellipse and it's angle to the y-axis. The event is optional and only sent when compositor and the touch device support this type of information. The client is responsible for making a reasonable assumption about the touch shape if no shape is reported. Signed-off-by: Dennis Kempin <denniskempin@google.com> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net> Reviewed-by: Yong Bakos <ybakos@humanoriented.com> Reviewed-by: Daniel Stone <daniels@collabora.com> |
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