tawasuyu/taffy

1#[test]
2fn percent_absolute_position() {
3    use slotmap::Key;
4    #[allow(unused_imports)]
5    use taffy::{layout::Layout, prelude::*};
6    let mut taffy = taffy::Taffy::new();
7    let node00 = taffy
8        .new_leaf(taffy::style::Style {
9            size: taffy::geometry::Size { width: taffy::style::Dimension::Percent(1f32), height: auto() },
10            ..Default::default()
11        })
12        .unwrap();
13    let node01 = taffy
14        .new_leaf(taffy::style::Style {
15            size: taffy::geometry::Size { width: taffy::style::Dimension::Percent(1f32), height: auto() },
16            ..Default::default()
17        })
18        .unwrap();
19    let node0 = taffy
20        .new_with_children(
21            taffy::style::Style {
22                position: taffy::style::Position::Absolute,
23                size: taffy::geometry::Size {
24                    width: taffy::style::Dimension::Percent(1f32),
25                    height: taffy::style::Dimension::Points(50f32),
26                },
27                inset: taffy::geometry::Rect {
28                    left: taffy::style::LengthPercentageAuto::Percent(0.5f32),
29                    right: auto(),
30                    top: auto(),
31                    bottom: auto(),
32                },
33                ..Default::default()
34            },
35            &[node00, node01],
36        )
37        .unwrap();
38    let node = taffy
39        .new_with_children(
40            taffy::style::Style {
41                flex_direction: taffy::style::FlexDirection::Column,
42                size: taffy::geometry::Size {
43                    width: taffy::style::Dimension::Points(60f32),
44                    height: taffy::style::Dimension::Points(50f32),
45                },
46                ..Default::default()
47            },
48            &[node0],
49        )
50        .unwrap();
51    taffy.compute_layout(node, taffy::geometry::Size::MAX_CONTENT).unwrap();
52    println!("\nComputed tree:");
53    taffy::debug::print_tree(&taffy, node);
54    println!();
55    let Layout { size, location, .. } = taffy.layout(node).unwrap();
56    assert_eq!(size.width, 60f32, "width of node {:?}. Expected {}. Actual {}", node.data(), 60f32, size.width);
57    assert_eq!(size.height, 50f32, "height of node {:?}. Expected {}. Actual {}", node.data(), 50f32, size.height);
58    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.x);
59    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.y);
60    let Layout { size, location, .. } = taffy.layout(node0).unwrap();
61    assert_eq!(size.width, 60f32, "width of node {:?}. Expected {}. Actual {}", node0.data(), 60f32, size.width);
62    assert_eq!(size.height, 50f32, "height of node {:?}. Expected {}. Actual {}", node0.data(), 50f32, size.height);
63    assert_eq!(location.x, 30f32, "x of node {:?}. Expected {}. Actual {}", node0.data(), 30f32, location.x);
64    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.y);
65    let Layout { size, location, .. } = taffy.layout(node00).unwrap();
66    assert_eq!(size.width, 30f32, "width of node {:?}. Expected {}. Actual {}", node00.data(), 30f32, size.width);
67    assert_eq!(size.height, 50f32, "height of node {:?}. Expected {}. Actual {}", node00.data(), 50f32, size.height);
68    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node00.data(), 0f32, location.x);
69    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node00.data(), 0f32, location.y);
70    let Layout { size, location, .. } = taffy.layout(node01).unwrap();
71    assert_eq!(size.width, 30f32, "width of node {:?}. Expected {}. Actual {}", node01.data(), 30f32, size.width);
72    assert_eq!(size.height, 50f32, "height of node {:?}. Expected {}. Actual {}", node01.data(), 50f32, size.height);
73    assert_eq!(location.x, 30f32, "x of node {:?}. Expected {}. Actual {}", node01.data(), 30f32, location.x);
74    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node01.data(), 0f32, location.y);
75}