EvTransitionEffect: support duration in decimal value
Property duration
of EvTransitionEffect was of
int
type, so when passing a 0.5
value it would
cast to zero.
So let's add a new duration-real
property to hold
the duration in decimal format, and use it for the
effect's duration.
Fixes part of #637 (closed) see comment: #637 (comment 1088208)
PS. Included is also a commit about fixing a g_critical message when trying to double remove a timer. I found that while working on this issue.