I’ve got a custom NSLayoutManager subclass I’m using to draw pill-shaped tokens. I draw these tokens for substrings with a custom attribute (TokenAttribute). I can draw no problem. However, I need...

I have a problem that boundingRectForGlyphRange always returns CGRect.zero "0.0, 0.0, 0.0, 0.0". For example, I am coding for touching on a part of text of UILabel feature. My text has fi...

On this thread, Core Text calculate letter frame in iOS, they were able to calculate the frame of each glyph very precisely using Core Text. The final rects hug the actual drawn glyphs perfectly. ...

Following the apple documentation I am trying to set up a simple NSTextView via its two constructor methods. I am placing the below code inside the viewDidAppear method of the view controller of ...

I am working on a rich text editor in a Mac app that uses Markdown syntax. I use NSTextStorage to watch for matches in Markdown syntax, then apply styles to the NSAttributedString in real time like...

NSTextContainer on Mac OS X has a method replaceLayoutManager: to replace the NSLayoutManager of NSTextView with a subclass of NSLayoutManager. Unfortunately iOS doesn't have such a function. I t...

I am trying to create a custom NSTextBlock, much like the one Apple did at WWDC 18 (23 mins in). Full demo project here. Okay, so it works great when I'm editing and marking a paragraph with my ...

The default layout manager fills in the background color (specified via NSAttributedString .backgroundColor attribute) where there's no text (except for the last line). I've managed to achieve t...

Using Swift, I want to get the boundingRect of a glyph, in draw#rect in a UILabel. The UILabel already has a size (say 300x300 in the example) and qualities such as the text being centered. class...

I'm trying to implement a very simple text editor that should work both with NSTextView on macOS and UITextView on iOS. This text editor has a toolbar button "Section Break" that inserts a new sect...

My ultimate goal is to give the user the ability to split a text inside an NSTextView or UITextView into several sections, where two subsequent sections are visually separated by a custom view sepa...

I'd like to get the index for the tapped character on a UILabel. I've subclassed a UILabel. In my awakeFromNib() I have this: layoutManager = NSLayoutManager() textStorage = NSTextStorage(attrib...

I want to be able to save the current text and visible region of an NSTextView and restore it. Using visibleRect and scrollRectToVisible: seems to deliver inconsistent results. If I just do: - (vo...

Looking at the documentation for NSLayoutManager, specifically the drawUnderlineForGlyphRange:underlineType:baselineOffset:lineFragmentRect:lineFragmentGlyphRange:containerOrigin: method, I noticed...

In session 220 (Advanced Text Layouts and Effects with Text Kit) of WWDC 2013 they specifically say NSLayoutManager can be used in conjunction with NSTextStorage and NSTextContainer to create advan...

I'm finishing a nice app with a relatively small text editor. During implementation of the syntax highlight I found myself in need to change foreground colour attribute of recognized tokens. I noti...

Is there a way in AppKit to measure the width of a large number of NSString objects(say a million) really fast? I have tried 3 different ways to do this: [NSString sizeWithAttributes:] [NSAttrib...

I have a UIImage that contains multiple image frames and a duration which was sliced together from an animated GIF file. If I load the image in a UIWebView it will animate as expected, but I want t...

In order to support the UIAccessibilityReadingContent protocol, I need my UITextView to answer me questions about its lines. These are the methods of the protocol that I need to implement: access...

I am building a note editor using the Text Kit in ios7. Earlier I had trouble in rendering of custom size NSTextAttachment's as it was slowing down the rendering to a great extent.I solved the issu...

I'm trying to build a table view cell that has a UITextView. To reuse this table view cell, I set a new text storage to the layout manager. But adding the layout manager to the new text storage doe...

I've been creating UITextViews programatically, using auto layout, in iOS 7. Something like this: _textView = [UITextView new]; _textView.translatesAutoresizingMaskIntoConstraints = NO; _textView....

Even though the iOS doc says: NLayoutManager, NSTextStorage, and NSTextContainer can be accessed from subthreads as long as the app guarantees the access from a single thread. I encountered ...

Since Xcode 6 still has a lots of bugs with Swift, I'm not sure is it one or I'm missing something. My class adopts protocol NSLayoutManagerDelegate. But it seems impossible to override method I ne...

I have a bunch of NSTextViews that I would like to share a single selection. I basically want this to behave like selecting text on a web page, where there are multiple text views but you can drag ...