iris-ai
a2cb4f05da
Every child gets the whole of the stack's box rather than `box_of(size)`, and `widget_at` does not resolve a rule into a box already chosen from it. Fixes half a row becoming a quarter, which no oracle can see because warm and cold shrink alike. Pinned by `a_stack_sized_by_a_child_does_not_take_that_childs_fraction_twice`. Not landed. Seed 1091 at depth 4, `shuffle-swap-for-three`, disagrees by three steps of the grid -- warm 1053.9971 against cold 1054 -- where the oracle tolerates two. Not a structural divergence: `box_of` was also making a child's placement exact, by handing it a box of exactly the length it asked for, and giving it the whole box instead puts a rounding back at each nesting level. Two nested stacks is three steps. Widening AGREE_STEPS is not the answer; finding the composition that went from exact to rounded is. Everything else is green: suite, shrinker at 400 seeds of depth 5, oracle at 1000 seeds of depth 6, and the rest of 2000 seeds at depth 4. Also carries examples/text.rs's top panel taking the full width.
69 lines
2.3 KiB
Rust
69 lines
2.3 KiB
Rust
//! Text sizing: wrapped text reads the width it is offered, fixed text does
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//! not, and both report a height their container lays out around.
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use iris::prelude::*;
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fn main() {
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DefaultApp::<State>::run();
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}
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#[derive(DefaultUiState)]
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struct State {
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ui_state: DefaultUiState,
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}
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const SAMPLE: &str = "Wrapping shapes one source into as many lines as its container \
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leaves room for, so the height of a paragraph is an answer rather than a setting, and \
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the same words in a narrower box come back taller. Resize the window and watch the \
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text below reflow into a different number of lines while nothing about it changes.";
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impl DefaultAppState for State {
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fn new(mut ui_state: DefaultUiState, rsc: &mut DefaultRsc<Self>, _: Proxy<Self>) -> Self {
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let panel = || rect(Color::WHITE.darker(0.85));
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let wrapped = wtext(SAMPLE)
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.size(28)
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.wrap(true)
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.text_align(Align::LEFT)
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.pad(16)
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.width(rel(1.0))
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.background(panel());
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// Each one takes the whole width, because `text_align` puts the
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// glyphs somewhere in the box the text is given and a text that
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// reports the width of its own glyphs is given exactly that.
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let label = |text: &str, align| wtext(text).size(24).text_align(align).width(rel(1.0));
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let aligned = (
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label("left", Align::LEFT),
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label("centred", Align::H_CENTER),
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label("right", Align::RIGHT),
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)
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.span(Dir::DOWN)
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.gap(8)
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.pad(16)
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.background(panel());
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// The same words in half the width, which is a different number of
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// lines and so a different height. A declared width only holds along
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// a span's own axis, hence the row.
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let narrow = (
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wtext(SAMPLE)
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.size(20)
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.wrap(true)
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.pad(16)
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.background(panel())
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.align(Align::TOP)
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.width(rel(0.5)),
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rect(Color::WHITE.darker(0.95)),
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)
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.span(Dir::RIGHT);
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(wrapped, aligned, narrow)
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.span(Dir::DOWN)
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.gap(12)
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.pad(12)
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.set_root(rsc, &mut ui_state);
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Self { ui_state }
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}
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}
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