tawasuyu/taffy

1#[test]
2fn block_aspect_ratio_fill_max_height() {
3    #[allow(unused_imports)]
4    use taffy::{prelude::*, tree::Layout, TaffyTree};
5    let mut taffy: TaffyTree<crate::TextMeasure> = TaffyTree::new();
6    let node0 = taffy . new_leaf_with_context (taffy :: style :: Style { display : taffy :: style :: Display :: Block , max_size : taffy :: geometry :: Size { width : taffy :: style :: Dimension :: Length (40f32) , height : auto () , } , aspect_ratio : Some (2f32) , .. Default :: default () } , crate :: TextMeasure { text_content : "HH\u{200b}HH\u{200b}HH\u{200b}HH\u{200b}HH\u{200b}HH\u{200b}HH\u{200b}HH\u{200b}HH\u{200b}HH\u{200b}HH" , writing_mode : crate :: WritingMode :: Horizontal , _aspect_ratio : Some (2f32) , } ,) . unwrap () ;
7    let node = taffy
8        .new_with_children(
9            taffy::style::Style {
10                display: taffy::style::Display::Block,
11                size: taffy::geometry::Size {
12                    width: taffy::style::Dimension::Length(100f32),
13                    height: taffy::style::Dimension::Length(100f32),
14                },
15                ..Default::default()
16            },
17            &[node0],
18        )
19        .unwrap();
20    taffy.compute_layout_with_measure(node, taffy::geometry::Size::MAX_CONTENT, crate::test_measure_function).unwrap();
21    println!("\nComputed tree:");
22    taffy.print_tree(node);
23    println!();
24    #[cfg_attr(not(feature = "content_size"), allow(unused_variables))]
25    let layout @ Layout { size, location, .. } = taffy.layout(node).unwrap();
26    assert_eq!(size.width, 100f32, "width of node {:?}. Expected {}. Actual {}", node, 100f32, size.width);
27    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node, 100f32, size.height);
28    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node, 0f32, location.x);
29    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node, 0f32, location.y);
30    #[cfg(feature = "content_size")]
31    assert_eq!(
32        layout.scroll_width(),
33        0f32,
34        "scroll_width of node {:?}. Expected {}. Actual {}",
35        node,
36        0f32,
37        layout.scroll_width()
38    );
39    #[cfg(feature = "content_size")]
40    assert_eq!(
41        layout.scroll_height(),
42        0f32,
43        "scroll_height of node {:?}. Expected {}. Actual {}",
44        node,
45        0f32,
46        layout.scroll_height()
47    );
48    #[cfg_attr(not(feature = "content_size"), allow(unused_variables))]
49    let layout @ Layout { size, location, .. } = taffy.layout(node0).unwrap();
50    assert_eq!(size.width, 40f32, "width of node {:?}. Expected {}. Actual {}", node0, 40f32, size.width);
51    assert_eq!(size.height, 60f32, "height of node {:?}. Expected {}. Actual {}", node0, 60f32, size.height);
52    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0, 0f32, location.x);
53    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0, 0f32, location.y);
54    #[cfg(feature = "content_size")]
55    assert_eq!(
56        layout.scroll_width(),
57        0f32,
58        "scroll_width of node {:?}. Expected {}. Actual {}",
59        node0,
60        0f32,
61        layout.scroll_width()
62    );
63    #[cfg(feature = "content_size")]
64    assert_eq!(
65        layout.scroll_height(),
66        0f32,
67        "scroll_height of node {:?}. Expected {}. Actual {}",
68        node0,
69        0f32,
70        layout.scroll_height()
71    );
72}