I am having an issue with text not wrapping correctly if there is a single quote, or macOS ASCII Extended Character #213 (shift+opt.+]) in a string.
Apple does not escape the media item title string when it is retrieved through the iTunesLibrary framework, which is where I ran into this problem.
As you can see in the example below, the first string is exactly how it comes from the iTunesLibrary using the framework API call. The second string is with the single quote is escaped, the third string is if I use macOS Extended ASCII Character code 213, and the fourth string is if I use a tilde. The tilde is not the right character to use in this situation, but it is the only one that correctly wraps the text in the cell.
I worked on this for 6-8 hours to figure it out before posting this on StackOverflow.
This is the result I get:
Anyone else get the same result running this?
Do I need to report this as a bug?
Here's my code example:
ViewController.swift
import Cocoa
override func viewDidLoad() {
super.viewDidLoad()
self.view.frame.size = NSSize(width: 616, height: 184)
// Strings
let strings: Array<String> = ["I Keep Forgettin' (Every Time You're Near)","I Keep Forgettin\' (Every Time You're Near)","I Keep Forgettin’ (Every Time You're Near)","I Keep Forgettin` (Every Time You're Near)"]
// Formatting
let foreground = NSColor.purple.cgColor
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.alignment = .center
paragraphStyle.lineBreakMode = .byWordWrapping
paragraphStyle.tabStops = .none
paragraphStyle.baseWritingDirection = .leftToRight
guard let font = NSFont(name: "Helvetica", size: 28.0) else { return }
// Labels
var labels: Array<NSTextField> = [NSTextField]()
for i in 0..<strings.count {
let label = NSTextField(frame: NSRect(x: 20+(i*144), y: Int(self.view.frame.minY)+20, width: 144, height: 144))
label.cell = VerticallyCenteredTextFieldCell()
label.wantsLayer = true
label.layer?.borderColor = NSColor.purple.cgColor
label.layer?.borderWidth = 0.5
label.layer?.backgroundColor = NSColor.lightGray.cgColor
label.alphaValue = 1
let fontSize = bestFontSize(attributedString: NSAttributedString(string: strings[i], attributes: [.font: font, .paragraphStyle: paragraphStyle]), size: CGSize(width: 136, height: 136))
label.attributedStringValue = NSAttributedString(string: strings[i], attributes: [.font: font.withSize(fontSize), .foregroundColor: foreground, .paragraphStyle: paragraphStyle])
labels.append(label)
self.view.addSubview(labels[i])
}
}
override var representedObject: Any? {
didSet {
// Update the view, if already loaded.
}
}
func bestFontSize(attributedString: NSAttributedString, size: CGSize) -> CGFloat {
// Create a property to hold the font and size
var font: NSFont?
// Get the font information from the string attibutes
attributedString.enumerateAttribute(.font, in: NSRange(0..<attributedString.length)) { value, range, stop in
if let attrFont = value as? NSFont {
font = attrFont
}
}
if font == nil {
return 0
}
// Get any paragraph styling attributes
var paragraphStyle: NSMutableParagraphStyle?
attributedString.enumerateAttribute(.paragraphStyle, in: NSMakeRange(0, attributedString.length)) { value, range, stop in
if let style = value as? NSMutableParagraphStyle {
paragraphStyle = style
}
}
if paragraphStyle == nil {
return 0
}
// Create a sorted list of words from the string in descending order of length (chars) of the word
let fragment = attributedString.string.split(separator: " ").sorted() { $0.count > $1.count }
// Create a bounding box size that will be used to check the width of the largest word in the string
var width = String(fragment[0]).boundingRect(with: CGSize(width: .greatestFiniteMagnitude, height: size.height), options: [.usesLineFragmentOrigin, .usesFontLeading], attributes: [.font: font!, .paragraphStyle: paragraphStyle!], context: nil).width.rounded(.up)
// Create a bounding box size that will be used to check the height of the string
var height = attributedString.string.boundingRect(with: CGSize(width: size.width, height: .greatestFiniteMagnitude), options: [.usesLineFragmentOrigin, .usesFontLeading], attributes: [.font: font!, .paragraphStyle: paragraphStyle!], context: nil).height.rounded(.up)
while height >= size.height || width >= size.width {
guard let pointSize = font?.pointSize else {
return 0
}
font = font?.withSize(pointSize-0.25)
width = String(fragment[0]).boundingRect(with: CGSize(width: .greatestFiniteMagnitude, height: size.height), options: [.usesLineFragmentOrigin, .usesFontLeading], attributes: [.font: font!, .paragraphStyle: paragraphStyle!], context: nil).width.rounded(.up)
height = attributedString.string.boundingRect(with: CGSize(width: size.width, height: .greatestFiniteMagnitude), options: [.usesLineFragmentOrigin, .usesFontLeading], attributes: [.font: font!, .paragraphStyle: paragraphStyle!], context: nil).height.rounded(.up)
}
return font!.pointSize
}
}
VerticallyCenteredTextFieldCell.swift
import Cocoa
class VerticallyCenteredTextFieldCell: NSTextFieldCell {
// https://stackoverflow.com/questions/11775128/set-text-vertical-center-in-nstextfield/33788973 - Sayanti Mondal
func adjustedFrame(toVerticallyCenterText rect: NSRect) -> NSRect {
// super would normally draw from the top of the cell
var titleRect = super.titleRect(forBounds: rect)
let minimumHeight = self.cellSize(forBounds: rect).height
titleRect.origin.y += (titleRect.height - minimumHeight) / 2
titleRect.size.height = minimumHeight
return titleRect
}
override func drawInterior(withFrame cellFrame: NSRect, in controlView: NSView) {
super.drawInterior(withFrame: adjustedFrame(toVerticallyCenterText: cellFrame), in: controlView)
}
}
southernyankee.