tawasuyu

tawasuyu/taffy

A high performance rust-powered UI layout library

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⎇ morphorm tests/generated/grid/grid_absolute_column_start.rs Rust · 50 lines · 2.7 KB History Who touched what raw

Replace per-node measure functions with a single measure function + per-node context (#490) be627e7fa · Nico Burns ·

1#[test]
2fn grid_absolute_column_start() {
3    #[allow(unused_imports)]
4    use taffy::{prelude::*, tree::Layout, Taffy};
5    let mut taffy: Taffy<crate::TextMeasure> = Taffy::new();
6    let node0 = taffy
7        .new_leaf(taffy::style::Style {
8            position: taffy::style::Position::Absolute,
9            grid_column: taffy::geometry::Line { start: line(1i16), end: taffy::style::GridPlacement::Auto },
10            inset: taffy::geometry::Rect {
11                left: taffy::style::LengthPercentageAuto::Length(4f32),
12                right: taffy::style::LengthPercentageAuto::Length(3f32),
13                top: taffy::style::LengthPercentageAuto::Length(1f32),
14                bottom: taffy::style::LengthPercentageAuto::Length(2f32),
15            },
16            ..Default::default()
17        })
18        .unwrap();
19    let node = taffy
20        .new_with_children(
21            taffy::style::Style {
22                display: taffy::style::Display::Grid,
23                grid_template_rows: vec![length(40f32), length(40f32), length(40f32)],
24                grid_template_columns: vec![length(40f32), length(40f32), length(40f32)],
25                padding: taffy::geometry::Rect {
26                    left: taffy::style::LengthPercentage::Length(40f32),
27                    right: taffy::style::LengthPercentage::Length(20f32),
28                    top: taffy::style::LengthPercentage::Length(10f32),
29                    bottom: taffy::style::LengthPercentage::Length(30f32),
30                },
31                ..Default::default()
32            },
33            &[node0],
34        )
35        .unwrap();
36    taffy.compute_layout_with_measure(node, taffy::geometry::Size::MAX_CONTENT, crate::test_measure_function).unwrap();
37    println!("\nComputed tree:");
38    taffy.print_tree(node);
39    println!();
40    let Layout { size, location, .. } = taffy.layout(node).unwrap();
41    assert_eq!(size.width, 180f32, "width of node {:?}. Expected {}. Actual {}", node, 180f32, size.width);
42    assert_eq!(size.height, 160f32, "height of node {:?}. Expected {}. Actual {}", node, 160f32, size.height);
43    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node, 0f32, location.x);
44    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node, 0f32, location.y);
45    let Layout { size, location, .. } = taffy.layout(node0).unwrap();
46    assert_eq!(size.width, 133f32, "width of node {:?}. Expected {}. Actual {}", node0, 133f32, size.width);
47    assert_eq!(size.height, 157f32, "height of node {:?}. Expected {}. Actual {}", node0, 157f32, size.height);
48    assert_eq!(location.x, 44f32, "x of node {:?}. Expected {}. Actual {}", node0, 44f32, location.x);
49    assert_eq!(location.y, 1f32, "y of node {:?}. Expected {}. Actual {}", node0, 1f32, location.y);
50}