widthTracksTextView, heightTracksTextView does not shrink to fit width/height

[sebjvidal]

STTextView's widthTracksTextView and heightTracksTextView works nicely when the size of textView needs to increase to fit its content. However, when deleting content, the size of the textView does not shrink to fit the content. See attached video.

Screen.Recording.2023-10-05.at.12.13.08.mov

This can be reproduced with the following code on macOS 13.5.2 using Xcode 15.0 and STTextView 0.8.15:

import AppKit
import STTextView

class ViewController: NSViewController, STTextViewDelegate {

    override func viewDidLoad() {
        super.viewDidLoad()

        let textView = STTextView()
        textView.string = "Snippet"
        textView.backgroundColor = .systemTeal
        textView.font = .monospacedSystemFont(ofSize: 15, weight: .regular)
        
        view.addSubview(textView)
    }
}

[krzyzanowskim]

I've made major changes to that area. I'm happy to discuss if that's still an issue

[davbeck]

I was able to get a STTextView (inside a scroll view) working as a growing text field, but I ran into 1 main issue:

When you delete the last line, the size doesn't shrink back down. If you delete the last line again, it will shrink down, but still have the extra line height. This seems to be an issue with textLayoutManager.usageBoundsForTextContainer.size. I saw the exact same behavior with NSTextView. I'm not sure if this is a bug or a feature, but for this use case it gets in the way. Here's how I fixed it: https://github.com/davbeck/UntitledTerminalApp/blob/d40a2eddf50217a1ff2c1a23bbf99c7d0dc63298/Terminal/Views/Prompt/PromptTextView.swift#L23. I used enumerateTextLayoutFragments instead of usageBoundsForTextContainer.

[krzyzanowskim]

try 0.9.2, and in addition check values isVerticallyResizable, isHorizontallyResizable that configure shrinking behavior