Improving mouse event response

[pnayak <na...@yahoo.com>]

Hi All,

I have a custom container component let me call it UIPanel that has several
child components. In some cases there are many within several Group
containers/Viewstacks etc. which I have to use to  attain complex layout and
visuals. Some UIPanels are simple  without much content in them.

There are several instances of the UIPanel on the screen and whenever the
user clicks on anyone of them it has to be the top most one. I achieve this
by using the setElementIndex to numElements - 1 for the owner of the
component which is a Group. (IVisualElementContainer.setElementIndex(this,
numElements - 1)).

I've noticed that whenever a UIPanel is complex with several children like I
mentioned above, clicking on it brings it to the  top but there is a delay
of > 1 second. Where as in other cases it is instantaneous.

I assume this is because the mouse event has to traverse all the children
before it gets to the UIPanel. I'm thinking there has to be a way to improve
this. The only components interested in the event is the UIPanel and the top
most child inside the UIPanel which is a DataGrid.

Is there any other way to improve the response? Is there a container that is
more lightweight that Group that will be faster but provides layout
functionality? If anyone can provide some inputs will be greatly helpful.

Thanks,
PN



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Re: Improving mouse event response

[Alex Harui <ah...@adobe.com>]

Use the profiler to see what is taking all of that time.  My guess is that
setElementIndex causes the UIPanel to be removed and re-added to the
display list which then forces a re-layout of all of the child widgets.

In general, if there are display objects you can't see, you'll get better
performance if they are not on the display list.

-Alex

On 8/12/14 8:31 PM, "pnayak" <na...@yahoo.com> wrote:

>Hi All,
>
>I have a custom container component let me call it UIPanel that has
>several
>child components. In some cases there are many within several Group
>containers/Viewstacks etc. which I have to use to  attain complex layout
>and
>visuals. Some UIPanels are simple  without much content in them.
>
>There are several instances of the UIPanel on the screen and whenever the
>user clicks on anyone of them it has to be the top most one. I achieve
>this
>by using the setElementIndex to numElements - 1 for the owner of the
>component which is a Group. (IVisualElementContainer.setElementIndex(this,
>numElements - 1)).
>
>I've noticed that whenever a UIPanel is complex with several children
>like I
>mentioned above, clicking on it brings it to the  top but there is a delay
>of > 1 second. Where as in other cases it is instantaneous.
>
>I assume this is because the mouse event has to traverse all the children
>before it gets to the UIPanel. I'm thinking there has to be a way to
>improve
>this. The only components interested in the event is the UIPanel and the
>top
>most child inside the UIPanel which is a DataGrid.
>
>Is there any other way to improve the response? Is there a container that
>is
>more lightweight that Group that will be faster but provides layout
>functionality? If anyone can provide some inputs will be greatly helpful.
>
>Thanks,
>PN
>
>
>
>--
>View this message in context:
>http://apache-flex-users.2333346.n4.nabble.com/Improving-mouse-event-respo
>nse-tp7638.html
>Sent from the Apache Flex Users mailing list archive at Nabble.com.