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Question Events to notify when a slider is dragging

Discussion in 'UI Toolkit' started by Aaron-Meyers, Jan 21, 2023.

  1. Aaron-Meyers

    Aaron-Meyers

    Joined:
    Dec 8, 2009
    Posts:
    305
    I need to know the state of a slider, when it begins dragging and when it stops dragging. Are there events for that? I tried using DragEnterEvent and DragLeaveEvent with RegisterCallback, but I never got anything. What's the correct way?
     
    Aaron-Meyers, Jan 21, 2023
    #1

  2. griendeau_unity

    griendeau_unity

    Unity Technologies

    Joined:
    Aug 25, 2020
    Posts:
    230
    Sliders internally use MouseEvents/PointerEvents to detect drag, you could register to these pointer down/pointer up events on TrickleDown, on the drag element (className: Slider.draggerUssClassName).
     
    griendeau_unity, Jan 23, 2023
    #2

  3. LarsLundh

    LarsLundh

    Joined:
    Sep 6, 2022
    Posts:
    20
    Anyone else visiting here in the future.

    This worked for me:

    Code (CSharp):
    1. Slider.RegisterCallback<MouseCaptureOutEvent>(OnScrubberSliderReleased);
    2. // dont forget to unregister in the detachFromPanelEvent handler
    3. Slider.UnregisterCallback<MouseCaptureOutEvent>(OnScrubberSliderReleased);
     
    Last edited: Jul 18, 2023
    LarsLundh, May 29, 2023
    #3
    gzeeebra and DMGrizz like this.