iris-ai
f9423855e1
Reviewed-on: iris/iris#16 Reviewed-by: iris <2+iris@noreply.localhost> Co-authored-by: iris-ai <4+iris-ai@noreply.localhost>
112 lines
3.5 KiB
Rust
112 lines
3.5 KiB
Rust
//! Where a frame puts things, with no window to put them in.
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use iris::harness::{Harness, assert_corners};
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use iris::prelude::*;
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/// A fixed 100 wide, and the rest of the 400 to its neighbour.
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fn two_rects(h: &mut Harness) -> (WidgetId, WidgetId) {
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let left = rect(Color::RED).width(100).add(&mut h.rsc);
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let right = rect(Color::BLUE).add(&mut h.rsc);
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h.set_root((left, right).span(Dir::RIGHT));
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(left.id(), right.id())
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}
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#[test]
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fn a_span_gives_each_child_the_width_it_asked_for() {
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let mut h = Harness::new((400, 200));
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let (left, right) = two_rects(&mut h);
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assert_corners!(h, left, (0, 0), (100, 200));
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assert_corners!(h, right, (100, 0), (400, 200));
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}
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#[test]
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fn resizing_relays_out_against_the_new_output() {
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let mut h = Harness::new((400, 200));
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let (left, right) = two_rects(&mut h);
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h.resize((800, 100));
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assert!(h.needs_redraw());
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h.frame();
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assert_corners!(h, left, (0, 0), (100, 100));
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assert_corners!(h, right, (100, 0), (800, 100));
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}
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#[test]
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fn an_empty_widget_takes_a_share_of_a_span() {
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let mut h = Harness::new((400, 200));
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let gap = ().add(&mut h.rsc);
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let right = rect(Color::BLUE).width(100).add(&mut h.rsc);
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h.set_root((gap, right).span(Dir::RIGHT));
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assert_corners!(h, gap, (0, 0), (300, 200));
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assert_corners!(h, right, (300, 0), (400, 200));
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}
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#[test]
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fn a_child_drawn_twice_moves_once() {
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let mut h = Harness::new((400, 200));
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// `Aligned` draws its child twice; listing it twice would move it twice.
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let inner = rect(Color::BLUE).add(&mut h.rsc);
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let centered = inner.center().width(200).add(&mut h.rsc);
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let left = rect(Color::RED).width(100).add(&mut h.rsc);
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h.set_root((left, centered).span(Dir::RIGHT));
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assert_corners!(h, inner, (100, 0), (300, 200));
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h.rsc[left].x = Some(Len::abs(150));
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h.frame();
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assert_corners!(h, inner, (150, 0), (350, 200));
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}
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#[test]
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fn a_resize_lands_where_a_cold_start_would() {
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let build = |h: &mut Harness| {
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let para = wtext(
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"Wrapping shapes one source into as many lines as its container leaves room \
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for, so the height of a paragraph is an answer rather than a setting.",
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)
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.size(20)
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.wrap(true)
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.pad(16)
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.add(&mut h.rsc);
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let below = rect(Color::RED).add(&mut h.rsc);
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let root = (para, below).span(Dir::DOWN).pad(12);
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h.set_root(root);
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(para, below)
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};
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let mut cold = Harness::new((900, 1200));
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let (cold_para, cold_below) = build(&mut cold);
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let mut resized = Harness::new((1920, 1200));
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let (para, below) = build(&mut resized);
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resized.resize((900, 1200));
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resized.frame();
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assert_eq!(resized.region(¶), cold.region(&cold_para), "paragraph");
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assert_eq!(resized.region(&below), cold.region(&cold_below), "below");
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}
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#[test]
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fn a_fixed_box_is_drawn_again_rather_than_stretched() {
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let mut h = Harness::new((400, 400));
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// The panel fills a stack sized by its sibling, so it is drawn in the
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// whole box and then placed in the shorter one. Reusing it in that fixed
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// box afterwards would leave it whatever height it happened to have.
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let panel = rect(Color::BLUE).add(&mut h.rsc);
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let leaf = rect(Color::RED).height(100).add(&mut h.rsc);
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let stack = (panel, leaf)
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.stack()
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.size(StackSize::Child(1))
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.add(&mut h.rsc);
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h.set_root(stack.align(Align::TOP));
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assert_corners!(h, panel, (0, 0), (400, 100));
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h.rsc[leaf].y = Some(Len::abs(250));
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h.frame();
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assert_corners!(h, panel, (0, 0), (400, 250));
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}
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