tawasuyu/taffy

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