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I ran into an issue where I needed to animate translating a label vertically the same distance of a textField's text height. In most cases just textField.bounds.heigt but if the textField's height is bigger than the text height it will not be any good for me. So I need to know:
How to calculate the line height of the string text from its UIFont?
Regarding the duplicate: There's a little bit different of what I need. that answer(which I've referenced in my answer) get the total height depending on 1) the string 2) the width 3) the font. What I needed is one line height dpending only on the font.
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Multiply the drawing scale factor by the desired text output height to determine the height of the text objects in the drawing. Using the drawing scale factor of 48 and a desired text height of 3/16” for the output, you would take 48 x 0.1875 to get a final text height of 9.
The line-height CSS property sets the height of a line box. It's commonly used to set the distance between lines of text. On block-level elements, it specifies the minimum height of line boxes within the element. On non-replaced inline elements, it specifies the height that is used to calculate line box height.
SwiftUI text does not provide a lineHeight property (line spacing is a different beast). You could try to align the 'firstTextBaseLine' to get the desired behaviour. Alternatively, use a 'UILabel' (via 'UIViewRepresentable') with an attributed string (specify line height in the paragraph style).
UIFont has a property lineHeight:
if let font = _textView.font {
let height = font.lineHeight
}
where font is your font
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