[Interest] [Qml][Item][Node] Determine if Item is rendered

[Liang Jian]

    I have encountered nearly the same problem as yours. I have contact qt
support and finnaly I realized that right now this is not possible.
    The only workaround is to let the Qml item's user to tell you which
part is visible and then your quick item change its nodes dynamically.


On Wed, Jun 8, 2016 at 4:44 AM, Jérôme Godbout <jerome at bodycad.com> wrote:

> Hi,
> I looking for a way to know if an Qml Item is rendered, we are reparenting
> some Item to display or not some Item Tree. Concret we swap between parent
> null and by parent of the rendering scene container. This allow to know
> only the part we are currently displaying, the others parentless Item are
> unknown at this given time and may appears only later on.
>
> I have something that do an action that is only required when the Item is
> displayed, but I cannot based myself on the visible. I was wondering if
> there's a way to know if an Item is rendered (was traversed during the
> Rendering Node of last frame would be good enough).
>
> Anybody have an idea?
> Thanks,
> Jerome
>
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