tawasuyu/taffy

1#[test]
2fn wrap_column() {
3    #[allow(unused_imports)]
4    use taffy::{prelude::*, tree::Layout};
5    let mut taffy = taffy::Taffy::new();
6    let node0 = taffy
7        .new_leaf(taffy::style::Style {
8            size: taffy::geometry::Size {
9                width: taffy::style::Dimension::Length(30f32),
10                height: taffy::style::Dimension::Length(31f32),
11            },
12            ..Default::default()
13        })
14        .unwrap();
15    let node1 = taffy
16        .new_leaf(taffy::style::Style {
17            size: taffy::geometry::Size {
18                width: taffy::style::Dimension::Length(30f32),
19                height: taffy::style::Dimension::Length(32f32),
20            },
21            ..Default::default()
22        })
23        .unwrap();
24    let node2 = taffy
25        .new_leaf(taffy::style::Style {
26            size: taffy::geometry::Size {
27                width: taffy::style::Dimension::Length(30f32),
28                height: taffy::style::Dimension::Length(33f32),
29            },
30            ..Default::default()
31        })
32        .unwrap();
33    let node3 = taffy
34        .new_leaf(taffy::style::Style {
35            size: taffy::geometry::Size {
36                width: taffy::style::Dimension::Length(30f32),
37                height: taffy::style::Dimension::Length(34f32),
38            },
39            ..Default::default()
40        })
41        .unwrap();
42    let node = taffy
43        .new_with_children(
44            taffy::style::Style {
45                flex_direction: taffy::style::FlexDirection::Column,
46                flex_wrap: taffy::style::FlexWrap::Wrap,
47                size: taffy::geometry::Size {
48                    width: taffy::style::Dimension::Length(100f32),
49                    height: taffy::style::Dimension::Length(100f32),
50                },
51                ..Default::default()
52            },
53            &[node0, node1, node2, node3],
54        )
55        .unwrap();
56    taffy.compute_layout(node, taffy::geometry::Size::MAX_CONTENT).unwrap();
57    println!("\nComputed tree:");
58    taffy::util::print_tree(&taffy, node);
59    println!();
60    let Layout { size, location, .. } = taffy.layout(node).unwrap();
61    assert_eq!(size.width, 100f32, "width of node {:?}. Expected {}. Actual {}", node, 100f32, size.width);
62    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node, 100f32, size.height);
63    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node, 0f32, location.x);
64    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node, 0f32, location.y);
65    let Layout { size, location, .. } = taffy.layout(node0).unwrap();
66    assert_eq!(size.width, 30f32, "width of node {:?}. Expected {}. Actual {}", node0, 30f32, size.width);
67    assert_eq!(size.height, 31f32, "height of node {:?}. Expected {}. Actual {}", node0, 31f32, size.height);
68    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0, 0f32, location.x);
69    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0, 0f32, location.y);
70    let Layout { size, location, .. } = taffy.layout(node1).unwrap();
71    assert_eq!(size.width, 30f32, "width of node {:?}. Expected {}. Actual {}", node1, 30f32, size.width);
72    assert_eq!(size.height, 32f32, "height of node {:?}. Expected {}. Actual {}", node1, 32f32, size.height);
73    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node1, 0f32, location.x);
74    assert_eq!(location.y, 31f32, "y of node {:?}. Expected {}. Actual {}", node1, 31f32, location.y);
75    let Layout { size, location, .. } = taffy.layout(node2).unwrap();
76    assert_eq!(size.width, 30f32, "width of node {:?}. Expected {}. Actual {}", node2, 30f32, size.width);
77    assert_eq!(size.height, 33f32, "height of node {:?}. Expected {}. Actual {}", node2, 33f32, size.height);
78    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node2, 0f32, location.x);
79    assert_eq!(location.y, 63f32, "y of node {:?}. Expected {}. Actual {}", node2, 63f32, location.y);
80    let Layout { size, location, .. } = taffy.layout(node3).unwrap();
81    assert_eq!(size.width, 30f32, "width of node {:?}. Expected {}. Actual {}", node3, 30f32, size.width);
82    assert_eq!(size.height, 34f32, "height of node {:?}. Expected {}. Actual {}", node3, 34f32, size.height);
83    assert_eq!(location.x, 50f32, "x of node {:?}. Expected {}. Actual {}", node3, 50f32, location.x);
84    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node3, 0f32, location.y);
85}