Marcin Krzyzanowski

@krzyzanowskim
4.3K Followers
2K Following
2.5K Posts

ο£Ώ unrelated. I'm here for bugs.
☈ https://cryptoswift.io ⌨️ TextKit certified expert @ https://goodnotes.com by day

Get https://notepadexe.com - developer playground.

Text editor implementer by night https://github.com/krzyzanowskim/STTextView

githubhttps://github.com/krzyzanowskim
Blueskyhttps://bsky.app/profile/krzyzanowskim.com
Notepad.exehttps://NotepadExe.com
Commanderhttps://TheCommander.app
Marcin Krzyzanowski4d ago

you can just make up things

16 year!

Marcin KrzyzanowskiApr 16
Another UITextView + TextKit2 bug reported FB22523964. This one is not new, and my best advice is to not use UITextView 🀷 https://github.com/krzyzanowskim/STTextView has it sorted
Show threadMarcin KrzyzanowskiApr 12
the sky is the limit
Marcin KrzyzanowskiApr 11
πŸ‘€ I created a monster. I'm hideous 🫟 #iosdev #macdev
Marcin KrzyzanowskiApr 6
SwiftPM is such diva. TIL "target names need to be unique across the package graph", meaning two DIFFERENT packages can't provide a target with the same name.
Marcin KrzyzanowskiApr 6

Work with SwiftPM without #Xcode and run on Mac and Linux with https://notepadexe.com #swift #swiftlang #macdev #iosdev

https://youtu.be/7eGPTWPFEX4

Marcin KrzyzanowskiApr 5
Igor KulmanApr 5
Years ago I wrote a Pascal interpreter in #swiftlang so I thought, why not try making it an iOS app. Pascal is still taught at some school as the first programming language and the retro theme is just so nostalgic. #iosdev
Marcin KrzyzanowskiApr 4
Show threadElizabeth AyerApr 4

The fact that we are *not* seeing wildly improving software all around us tells us everything we need to know.

There is no flourishing of value delivery, new product categories, more needs being satisfied better. It’s the opposite.

All we are seeing is decreases in quality, because πŸ‘ code πŸ‘ creation πŸ‘ is not πŸ‘ the problem.

Show threadMarcin KrzyzanowskiApr 4

one may naively think: font provide all the metrics needed to correctly calculate the size. WRONG. It provides some of information, the other part is either deducted, hardcoded or yoyo. Example, Helvetica at one point ha

lineHeight = ascent + ((ascent + descent) * 0.15) + descent, then there's language aware adjustment on top of that.

I can't make this shit up.

Marcin KrzyzanowskiApr 4

The text "Line Height" calculation on iOS/Mac is THE rocket science πŸ”¬

There is literally one public method that can calculate it right: `NSLayoutManager.defaultLineHeight(for:)`. The logic behind it does not consistently match CoreText
CTLine, CTFramesetter, or a plain (ascent + descent + leading) calculation 🍿

Literal rocket science build on top of years of assumptions, mistakes, historic use. why? becasue reasons. magic delta values depends on the font name/style/size.