Re: [E-devel] Evas Objects and their actual visibility

[Christopher M. <cpm...@co...>]

On 09/16/2010 02:59 PM, Iván Briano (Sachiel) wrote:
> Hello people,
>
> As you know, evas_object_show() and evas_object_hide() control visibility
> for Evas_Object's, and when these are called on one, the respective callbacks
> (EVAS_CALLBACK_SHOW/HIDE) are triggered.
>
> Now, this works fine if we want to know when an object is supposed to be shown
> or not, but not when something else controls its visibility, like
> clippers do. In this
> case, we need to do all kinds of checks of who clips whom, when alpha is 0, etc,
> just to know if a certain object is actually visible on screen or not.
>
> Since Evas does all this things internally and it can notify users of
> this kind of
> changes, doesn't it make sense to have EVAS_CALLBACK_REALIZED and
> EVAS_CALLBACK_UNREALIZED to track them?
>
> Regards,
> me

Indeed. I second this motion :)

dh