Hacker News: be5invis

New comment by be5invis in "Text Editing Hates You Too"

be5invis — Tue, 29 Oct 2019 07:49:54 +0000

The story about line wrapping is mainly that, you:

  · Break the text into runs.
  · Calculate BiDi at paragraph level.
  · Shape every run to get its length and possible line breaking points.
  · Arrange the runs (now only have length, height, text isnide it and some breaking properties — glyphs and glyph positions are dropped) into lines.

Such process is called “measuring”. And the real text display is delayed until a line become visible: you fetch out the text runs in the line and do the real display.

In most times (like appending text) you do not to do much recalculation.

New comment by be5invis in "Text Editing Hates You Too"

be5invis — Tue, 29 Oct 2019 07:21:27 +0000

Let me count all the features that a proper rich text box should support:

  · Input methods, including...  
    · Composing IME  
    · Speech  
    · Handwriting  
    · Emoji picker  
  · Complex text rendering, including...  
    · Bidi  
    · Shaping  
    · Complex-script-aware editing  
    · Complex-script-aware find, replace, etc.  
  · Accessibility

And what they can choose to support:

  · Advanced typography, including...  
    · About line breaking...  
      · Hyphenation  
      · Optimized line break (Knuth-plass, etc.)  
    · About microtypography  
      · OpenType features (ligatures, etc.)  
      · OpenType variations  
      · Multiple master fonts  
      · Proper font fallback ← It is not a simple lookup-at-each-character process  
    · Advanced Middle East features, including...  
      · Kashida  
    · Advanced Far East features, including...  
      · Kinsoku Shori  
      · Auto space insertion  
      · Kumimoji  
      · Warichu  
      · Ruby  
    · Proper vertical layout, including...  
      · Yoko-in-Tate  
  · Inline objects and paragraph-like objects, including...  
    · Images  
    · Hyperlinks  
    · Math equations ← This is really hard.

New comment by be5invis in "Build Your Own Text Editor"

be5invis — Sun, 04 Aug 2019 11:48:31 +0000

I don't see any references to things like HarfBuzz or DWRITE, which are NECESSARY to properly display any scripts that's not European. All properly implemented text editors are rich text — because you will need to support font fallback and BiDi and all the Unicode complexity

New comment by be5invis in "Microsoft’s HoloLens 2: a $3,500 mixed-reality headset for the factory"

be5invis — Wed, 27 Feb 2019 04:39:01 +0000

DWRITE is very extensible so you can always implement an IDWriteTextRenderer and do all the magic staff in it.

Link: https://docs.microsoft.com/en-us/windows/desktop/directwrite...

New comment by be5invis in "Slate JS – A customizable framework for building rich text editors"

be5invis — Thu, 15 Nov 2018 07:30:27 +0000

Rich text editors' complexity is far beyond ordinary programmer's imagination, especially when complex script (like Arabic) is in it.

It is really good to see they have RTL support.

-- However they messed up when using composing IMEs :(

New comment by be5invis in "Microsoft Has Manually Patched Their Equation Editor Executable"

be5invis — Fri, 17 Nov 2017 12:49:38 +0000

You have to know that the MSFT may not have the source code of Equation Editor, since it is a simplified version of MathType.

New comment by be5invis in "Show HN: Mathcha – Online Mathematics Editor"

be5invis — Mon, 14 Aug 2017 06:36:07 +0000

The website works well in Edge but you claimed that it does not support that. I have to override the user agent in order to access your editor.

New comment by be5invis in "Show HN: Mathcha – Online Mathematics Editor"

be5invis — Sun, 13 Aug 2017 15:12:07 +0000

I guess you (or your company) does not have any Windows PC.

New comment by be5invis in "Luna – Visual and textual functional programming language"

be5invis — Fri, 23 Jun 2017 08:24:51 +0000

You say you have dependent types

OK, could you define this?

    data Eq : {a : Type} -> a -> a -> Type where
        Refl : Eq x x

    sym : {x : a} -> {y : a} -> Eq x y -> Eq y x
    sym Refl = Refl

    replace : {a : Type} -> {x : a} -> {y : a} -> {f : a -> Type} -> Eq x y -> f x -> f y
    replace Refl p = p

Request: Add a UTF-8 Mode for MSVCRT Functions and WINAPI

be5invis — Fri, 09 Jun 2017 09:47:23 +0000

Article URL: https://aka.ms/V1j1z8

Comments URL: https://news.ycombinator.com/item?id=14520281

Points: 1

# Comments: 0

New comment by be5invis in "Forall.js: Idris-like static types and invariant checks for JavaScript"

be5invis — Sat, 22 Apr 2017 10:38:06 +0000

So where is the famous Idris elaborator? Where are the universes? Where’s inductive types? Where are they?

New comment by be5invis in "TypeScript at Slack"

be5invis — Tue, 18 Apr 2017 08:52:35 +0000

Wait, isn’t using TypeScript politically incorrect? It is made by MS!!

LambdaConf Project: DeepDarkFantasy, Conbining FP and Deep Learning

be5invis — Wed, 05 Apr 2017 05:40:03 +0000

Article URL: https://github.com/ThoughtWorksInc/DeepDarkFantasy

Comments URL: https://news.ycombinator.com/item?id=14039946

Points: 1

# Comments: 0

New comment by be5invis in "Iosevka – A Typeface for Code, from Code"

be5invis — Sat, 01 Apr 2017 19:40:33 +0000

Your version is outdated.

New comment by be5invis in "Iosevka – A Typeface for Code, from Code"

be5invis — Sat, 01 Apr 2017 06:04:46 +0000

Leading and width is configurable, actually :)

New comment by be5invis in "Iosevka – A Typeface for Code, from Code"

be5invis — Sat, 01 Apr 2017 05:37:48 +0000

Iosevka does not have `fi` ligature. The "Term" variant is used for some restricted environments, like some Linux would think that Iosevka is not monospace due to it has glyphs wider than one space.

New comment by be5invis in "Iosevka – A Typeface for Code, from Code"

be5invis — Sat, 01 Apr 2017 05:08:13 +0000

To be honest, Iosevka is not suitable for the current VF specification, because that it does not support changing glyph topology while changing parameters.

New comment by be5invis in "Iosevka – A Typeface for Code, from Code"

be5invis — Sat, 01 Apr 2017 04:49:27 +0000

Do you know that all letters in Iosevka are EXACTLY 1/2 em wide?

For ASIAN users, you can use THIS and preserve your perfect alignment.

New comment by be5invis in "Second Chinese Firm in a Week Found Hiding Backdoor in Android Devices"

be5invis — Sun, 20 Nov 2016 21:27:05 +0000

I think Hanlon's Razor can be applied to this example: They just do not think that encryption is important. It is real for Chinese companies.

New comment by be5invis in "Visual Studio 2017 Release Candidate"

be5invis — Wed, 16 Nov 2016 22:40:05 +0000

So, when will cl support two-phase name lookup?