If I have followed this thread:
1) Klaus executes a go to <card> with a visual effect using an effect
rate of X millisecs
2) Klaus need to start a time on how long the user of the app has to
answer a question once the card is displayed
I believe the order is:
1) preOpencard handler (if one) is executed
2) card is rendered in the window using the visual effect but the
openCard handler (if one) is executed starting effectively at the same
time as the visual effect based rendering of the card in the window
takes place.
So starting the timer at the time "openCard" starts + the length of the
effectRate of the visual effect used in the GO would represent when the
user can expect to see the whole card.
So if the user has 5 seconds to answer the question and the effectRate
was set to 500 millisecs then the start time of openCard + 500ms is when
to start the counter for a second reply.
Disclaimers: Depending upon the specific effect chosen and the placement
of the question on the card, the user may be able to read the question a
few millisec before the effect is done or even many millisec before the
effect is done.
I don't think there is any way to have absolutely precise timing.
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