tawasuyu/taffy

1#[test]
2fn absolute_layout_child_order() {
3    use slotmap::Key;
4    #[allow(unused_imports)]
5    use taffy::{layout::Layout, prelude::*};
6    let mut taffy = taffy::Taffy::new();
7    let node0 = taffy
8        .new_leaf(taffy::style::Style {
9            size: taffy::geometry::Size {
10                width: taffy::style::Dimension::Points(60f32),
11                height: taffy::style::Dimension::Points(40f32),
12            },
13            ..Default::default()
14        })
15        .unwrap();
16    let node1 = taffy
17        .new_leaf(taffy::style::Style {
18            position: taffy::style::Position::Absolute,
19            size: taffy::geometry::Size {
20                width: taffy::style::Dimension::Points(60f32),
21                height: taffy::style::Dimension::Points(40f32),
22            },
23            ..Default::default()
24        })
25        .unwrap();
26    let node2 = taffy
27        .new_leaf(taffy::style::Style {
28            size: taffy::geometry::Size {
29                width: taffy::style::Dimension::Points(60f32),
30                height: taffy::style::Dimension::Points(40f32),
31            },
32            ..Default::default()
33        })
34        .unwrap();
35    let node = taffy
36        .new_with_children(
37            taffy::style::Style {
38                align_items: Some(taffy::style::AlignItems::Center),
39                justify_content: Some(taffy::style::JustifyContent::Center),
40                size: taffy::geometry::Size {
41                    width: taffy::style::Dimension::Points(110f32),
42                    height: taffy::style::Dimension::Points(100f32),
43                },
44                ..Default::default()
45            },
46            &[node0, node1, node2],
47        )
48        .unwrap();
49    taffy.compute_layout(node, taffy::geometry::Size::MAX_CONTENT).unwrap();
50    println!("\nComputed tree:");
51    taffy::debug::print_tree(&taffy, node);
52    println!();
53    let Layout { size, location, .. } = taffy.layout(node).unwrap();
54    assert_eq!(size.width, 110f32, "width of node {:?}. Expected {}. Actual {}", node.data(), 110f32, size.width);
55    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node.data(), 100f32, size.height);
56    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.x);
57    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.y);
58    let Layout { size, location, .. } = taffy.layout(node0).unwrap();
59    assert_eq!(size.width, 55f32, "width of node {:?}. Expected {}. Actual {}", node0.data(), 55f32, size.width);
60    assert_eq!(size.height, 40f32, "height of node {:?}. Expected {}. Actual {}", node0.data(), 40f32, size.height);
61    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.x);
62    assert_eq!(location.y, 30f32, "y of node {:?}. Expected {}. Actual {}", node0.data(), 30f32, location.y);
63    let Layout { size, location, .. } = taffy.layout(node1).unwrap();
64    assert_eq!(size.width, 60f32, "width of node {:?}. Expected {}. Actual {}", node1.data(), 60f32, size.width);
65    assert_eq!(size.height, 40f32, "height of node {:?}. Expected {}. Actual {}", node1.data(), 40f32, size.height);
66    assert_eq!(location.x, 25f32, "x of node {:?}. Expected {}. Actual {}", node1.data(), 25f32, location.x);
67    assert_eq!(location.y, 30f32, "y of node {:?}. Expected {}. Actual {}", node1.data(), 30f32, location.y);
68    let Layout { size, location, .. } = taffy.layout(node2).unwrap();
69    assert_eq!(size.width, 55f32, "width of node {:?}. Expected {}. Actual {}", node2.data(), 55f32, size.width);
70    assert_eq!(size.height, 40f32, "height of node {:?}. Expected {}. Actual {}", node2.data(), 40f32, size.height);
71    assert_eq!(location.x, 55f32, "x of node {:?}. Expected {}. Actual {}", node2.data(), 55f32, location.x);
72    assert_eq!(location.y, 30f32, "y of node {:?}. Expected {}. Actual {}", node2.data(), 30f32, location.y);
73}