The mouse, touch, key events have no timestamp field currently,
meaning that the timestamp passed to QWindowSystemInterface's
handleMouse, Touch, KeyEvent functions will not be stored in the
generated events. The timestamp can be quite valuable in some cases
(e.g. when performing filtering of touch events) so losing this
information is not desirable. The patch adds a timestamp field to
QInputEvent, which is the base for mouse, touch, key, and other
events, and also makes QGuiApplication to store the timestamp in the
generated events.
Change-Id: Icb9de8b238cb341916eac33ce21603f4955baca7
Reviewed-on: http://codereview.qt.nokia.com/4196
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
5e9f410eb6