On 07/01/2014 12:35 PM, Jasper St. Pierre wrote:
"A blink in the highlighting"?
Yes. Say the client wants to highlight the button being pressed and it has popped up a menu, If the mouse is moved from the button to the menu, the client wants to keep the button highlighted.
If in fact the server sends an "exit" event and then an "enter" event for the menu, a naive client will draw the button un-highlighted (since as far as it knows the exit was because the mouse entered a different client's window) and then when it sees the enter it has to draw it again highlighted. If it does a commit, the user will see it blink. This is wrong.
Now obviously the client can wait (I think actually zero time because it should be in the same block of events) and see if there is an enter event, but it would be a lot easier on the logic if it did not get the enter event at all!
This is not a joke, these sort of problems make toolkits annoying and complex to write.
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