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Visibility: Inline vs inherited (ListView)

Discussion in 'UI Toolkit' started by Lance-Grooms, Apr 8, 2020.

  1. Lance-Grooms

    Lance-Grooms

    Joined:
    Mar 24, 2016
    Posts:
    26
    Intuitively, if a parent VisualElement is hidden, I would expect children to be hidden as well. This turns out to be the case when elements use "inherited" but NOT "inline" visibility. This is particularly nasty with something like a ListView where there tons of nested elements.

    Here is an example using a tabbed panel system. Panels are hidden if not the selected tab.

    Fig 1: ListView on a visible panel (all good)
    Fig1.png

    Fig 2: List view "inline" elements still visible when parent panel is hidden
    Fig2.png

    Is there a solution for this issue? I'm hoping there is something basic I'm missing. If not, are there any plans to implement a more robust system? (VisibleInHierarchy etc)

    Thanks!
     
    Lance-Grooms, Apr 8, 2020
    #1

  2. uMathieu

    uMathieu

    Unity Technologies

    Joined:
    Jun 6, 2017
    Posts:
    398
    use `style.display = Display.None` from c# or `display : none` from uss
     
    uMathieu, Apr 8, 2020
    #2

  3. Lance-Grooms

    Lance-Grooms

    Joined:
    Mar 24, 2016
    Posts:
    26
    Well that was an easy 2-minute fix. Thank you for the quick response. If I may pose a quick follow-up:

    From this I assume that:
    1) an element is included in the layout regardless of its visibility status
    2) Display.None completely excludes the entire hierarchy branch from the layout engine

    Is this correct? (And thanks again.)
     
    Lance-Grooms, Apr 8, 2020
    #3

  4. antoine-unity

    antoine-unity

    Unity Technologies

    Joined:
    Sep 10, 2015
    Posts:
    780
    You are correct for both 1) and 2).
     
    antoine-unity, Apr 8, 2020
    #4