A full sweep of #19, and the first review off48e04e. `Display for LayoutLen` leaves out every part that is zero, so `LayoutLen::ZERO` printed as the empty string -- and `Debug` forwards to `Display` since the last commit, so the four `assert_eq!`s in `cases/deferred.rs` print nothing where a request of zero is, and `scenario::describe` prints a `.width(0)` rule as `-`, which is what it prints for a widget that has no rule at all. That file exists so a tree a fuzzer found can be written out by hand; a value it cannot say is a hole in the one thing it is for. `Fixed::ceil_from_f32` took `next_up` of a `from_f32` that had already clamped, and `next_up` wraps, so a measurement past the top of the grid came back as the bottom of it. `from_f32` clamps deliberately because a float has further to come from; the ceiling is the other way in from a float and now holds to the same rule. The check goes beside the one `from_f32` already had. `Moves::depth` walked the move chain a second way, with its own copy of `CHAIN_LIMIT` and without the assertion `walk` makes; it is `walk` now, so the CPU counts the chain in one place and the shader's constant reaches both. `Harness::set_len` said it set a length "the way `.width()` sets one" and wrote the whole rule instead, dropping any bound beside it. A case that set a bound and then a length would have passed with no bound at all. Three rigs each spelled "one seed, or a range of them" by hand -- the class the eleventh sweep closed for reading a parameter and not for this. There is one `rig::seeds` now. `cases/deferred` was last in `suite.rs`'s otherwise alphabetical list. `diag::outside` writes out `AxisHolds::contains`'s four clauses to say which one refused a reuse; a debug assertion now catches a fifth clause added there and not here, which would leave a refusal counted and unexplained. `Sow::bound`'s comment recorded an open hole reached by seeds 4 and 196 at depth 5 -- but `generated.rs` says seeds stopped naming those trees when the leaves grew images, and 600 depth-5 trees over all sixteen cases agree warm against cold with every bound a fraction. The comment says what is true now and why the generator still grows pixels. Format, workspace clippy under -D warnings with and without layout-diagnostics, 208 ordinary and 212 diagnostic tests (207 and 211 before, plus the one this adds), and the cold dump byte-identical tof48e04eacross all 34,986 boxes. The three seed scans were not run: nothing here can move a box, which the dump confirms. 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