iris-ai 49cec82c1b Say which box a pin reaches the parent through, and derive the offer
The review pass over the two commits before it:

- `LayoutHolds`'s comment said a pin does not compose into the parent. It
  does, where the box it pinned is the parent's own box, which is the one
  case where the parent's own length is what was pinned.
- `DrawInfo::offer` was stored beside the two fields it is computed from.
  It is a method now, with the open question written where it is asked
  rather than only in the handoff.
- `Painter::own` is `frame_own` beside `extent_own`, since a widget's own
  box is the extent and the frame is what it is a part of.
- One expression for the length a rule gives a frame (`narrowed_by`) and
  one for what a widget answered (`ActiveData::measured`), each of which
  had two.
- The counter said "the placement it was pinned to" for what is now a
  length; the deferral in `redraw` named the seeds that made it necessary
  before the last commit rather than the ones that do now; three comments
  claimed an inset that does not exist yet.

No behaviour change: 108 suite tests, 20 core, the 11 generated cases, the
same two shrinker seeds failing at 400/5, and `view` and `tabs` byte-identical
to the renders taken before it.
2026-09-18 01:21:03 -04:00
2026-01-05 17:01:09 -05:00
2025-11-17 16:08:29 -05:00
2026-01-29 16:39:19 -05:00
2026-09-13 00:24:29 -04:00

iris

My experimental attempt at a rust ui library (also my first ui library).

It's currently designed around using retained data structures (widgets), rather than diffing generated trees from data like xilem or iced. This is an experiment and I'm not sure if it's a good idea or not.

Examples are in examples, eg. cargo run --example tabs.

Goals, in general order:

  1. does what I want it to (text, images, video, animations)
  2. very easy to use ignoring ergonomic ref counting
  3. reasonably fast / efficient (a lot faster than electron, save battery life, try to beat iced and xilem)

dev details

not targeting web rn cause wanna use actual nice gpu features & entire point of this is to make desktop apps / not need a web browser

general ideas trynna use rn / experiment with:

  • retained mode
  • specifically designed around wgpu so there's no translation
  • postfix functions for most things to prevent unreadable indentation (going very well)
  • events can be done directly where you draw the widgets
  • almost no macros in user code & actual LSP typechecking (variadic generics if you can hear me please save us)
  • relative anchor + absolute offset coord system (+ "rest" / leftover during widget layout)
  • single threaded ui & pass context around to make non async usage straightforward (pretty unsure about this)
  • widgets store outside of the actual rendering so they can be moved around and swapped easily (unsure about this but seems to work good for now)

under heavy initial development so not gonna try to explain status, maybe check TODO for that; sizable chance it gets a rewrite once I know everything I need and what seems to work best

it's called iris because it's the structure around what you actually want to display and colorful

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