`Holds::through`'s allowance for the two routes to a length was four half steps either side, from a derivation that said each rounding now drops a whole step where it used to drop half of one. That overshot: three is the floor, two fires the `Holds` assertion in `draw_at` on eleven generated cases, and four was never measured as necessary. Tightening both ends did not move one of the rig's twenty-five work counters, so the extra half step was not buying any reuse either. It cannot go to zero. The range has to contain the box a drawing was made in, which the assertion checks, and it must not contain a box the drawing does not hold for, which the warm-against-cold oracle checks -- and those two only coincide where a length reached two ways is the same number. It is not, yet; composing in `i64` and narrowing once is the queued change that would make it so, and shrinking this allowance is how to tell whether that worked. Checked: fmt, clippy, 81 suite tests, 17 core unit tests, the release oracle at 100 seeds and at 1000 seeds of depth 6, all fifteen shrinker cases at 400 seeds of depth 5, and `tabs`, `view`, `minimal`, `text`, `random` and the tab replay byte-identical at 1920x1200 against `2bc6bdf`. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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:
- does what I want it to (text, images, video, animations)
- very easy to use ignoring ergonomic ref counting
- 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