JunoSlider
JunoSlider is a custom slider for visionOS (probably works with iOS fine, though!) to mimic the style of Apple's expanding sliders in views like AVPlayer in instances where you're unable to use AVPlayer.
It's built in SwiftUI and customizable, with both the collapsed and expanded height being values you can change.
Apple's built-in Slider control may be a better fit for a lot of cases especially those where you don't require the expansion effect. The built-in Slider can animate its controlSize property, but the animation is a little weird on visionOS. Also, the height is not super customizable, even .mini with Slider does not allow you to get as narrow as Apple's AVPlayer slider, for instance.
Big thanks to Matthew Skiles and Ed Sanchez for helping me with the inner and drop shadows on the control. Also thank you to kind Twitter and Mastodon folks for helping me debug an animation issue with this control, it seems like a SwiftUI bug and the idea of just cropping out the animation jump seemed to be the best tradeoff.
