On Fri, Apr 8, 2011 at 04:21, Jake Knickerbocker <[email protected]> wrote:
> Emmanuele Bassi さんは書きました:
>>
>> there are hints on how to implement actors that can potentially display
>> large collections:
>>
>>
>>  * do not try to paint actors for items that are offscreen;
>>
>
>
> Would setting clipping on a parent group accomplish this?  If I say clipped
> to the size of the stage?

Sorry if what comes next is inexact or plain wrong, hope somebody will
correct if so. But just in case it helps:

My understanding is that clipping won't avoid executing the paint
code. I believe that you need to implement your own container which,
through knowledge of the specific scene you are building, can tell to
allocate and paint only those children it knows are strictly needed.

The recent addition of ClutterPaintVolume may be used by Clutter to
avoid having to implement your own container.

Regards,

Tomeu

>>  * try to minimize the text computations by avoiding measuring
>>    text multiple times;
>>
>
>
> Could you elaborate on this one a little?  What do you mean by "measuring
> text"?  I'm specifically having issues with text.
>
>
>> ciao,
>>  Emmanuele.
>>
>>
>
> Thanks,
> Jake
>
>
>
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