tawasuyu/taffy

1#[test]
2fn overflow_scrollbars_overridden_by_available_space() {
3    #[allow(unused_imports)]
4    use taffy::{prelude::*, tree::Layout, TaffyTree};
5    let mut taffy: TaffyTree<crate::TextMeasure> = TaffyTree::new();
6    let node00 = taffy.new_leaf(taffy::style::Style { flex_grow: 1f32, ..Default::default() }).unwrap();
7    let node0 = taffy
8        .new_with_children(
9            taffy::style::Style {
10                overflow: taffy::geometry::Point {
11                    x: taffy::style::Overflow::Scroll,
12                    y: taffy::style::Overflow::Scroll,
13                },
14                scrollbar_width: 15f32,
15                flex_grow: 1f32,
16                ..Default::default()
17            },
18            &[node00],
19        )
20        .unwrap();
21    let node = taffy
22        .new_with_children(
23            taffy::style::Style {
24                size: taffy::geometry::Size {
25                    width: taffy::style::Dimension::Length(2f32),
26                    height: taffy::style::Dimension::Length(4f32),
27                },
28                ..Default::default()
29            },
30            &[node0],
31        )
32        .unwrap();
33    taffy.compute_layout_with_measure(node, taffy::geometry::Size::MAX_CONTENT, crate::test_measure_function).unwrap();
34    println!("\nComputed tree:");
35    taffy.print_tree(node);
36    println!();
37    #[cfg_attr(not(feature = "content_size"), allow(unused_variables))]
38    let layout @ Layout { size, location, .. } = taffy.layout(node).unwrap();
39    assert_eq!(size.width, 2f32, "width of node {:?}. Expected {}. Actual {}", node, 2f32, size.width);
40    assert_eq!(size.height, 4f32, "height of node {:?}. Expected {}. Actual {}", node, 4f32, size.height);
41    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node, 0f32, location.x);
42    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node, 0f32, location.y);
43    #[cfg(feature = "content_size")]
44    assert_eq!(
45        layout.scroll_width(),
46        0f32,
47        "scroll_width of node {:?}. Expected {}. Actual {}",
48        node,
49        0f32,
50        layout.scroll_width()
51    );
52    #[cfg(feature = "content_size")]
53    assert_eq!(
54        layout.scroll_height(),
55        0f32,
56        "scroll_height of node {:?}. Expected {}. Actual {}",
57        node,
58        0f32,
59        layout.scroll_height()
60    );
61    #[cfg_attr(not(feature = "content_size"), allow(unused_variables))]
62    let layout @ Layout { size, location, .. } = taffy.layout(node0).unwrap();
63    assert_eq!(size.width, 2f32, "width of node {:?}. Expected {}. Actual {}", node0, 2f32, size.width);
64    assert_eq!(size.height, 4f32, "height of node {:?}. Expected {}. Actual {}", node0, 4f32, size.height);
65    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0, 0f32, location.x);
66    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0, 0f32, location.y);
67    #[cfg(feature = "content_size")]
68    assert_eq!(
69        layout.scroll_width(),
70        0f32,
71        "scroll_width of node {:?}. Expected {}. Actual {}",
72        node0,
73        0f32,
74        layout.scroll_width()
75    );
76    #[cfg(feature = "content_size")]
77    assert_eq!(
78        layout.scroll_height(),
79        0f32,
80        "scroll_height of node {:?}. Expected {}. Actual {}",
81        node0,
82        0f32,
83        layout.scroll_height()
84    );
85    #[cfg_attr(not(feature = "content_size"), allow(unused_variables))]
86    let layout @ Layout { size, location, .. } = taffy.layout(node00).unwrap();
87    assert_eq!(size.width, 0f32, "width of node {:?}. Expected {}. Actual {}", node00, 0f32, size.width);
88    assert_eq!(size.height, 0f32, "height of node {:?}. Expected {}. Actual {}", node00, 0f32, size.height);
89    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node00, 0f32, location.x);
90    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node00, 0f32, location.y);
91    #[cfg(feature = "content_size")]
92    assert_eq!(
93        layout.scroll_width(),
94        0f32,
95        "scroll_width of node {:?}. Expected {}. Actual {}",
96        node00,
97        0f32,
98        layout.scroll_width()
99    );
100    #[cfg(feature = "content_size")]
101    assert_eq!(
102        layout.scroll_height(),
103        0f32,
104        "scroll_height of node {:?}. Expected {}. Actual {}",
105        node00,
106        0f32,
107        layout.scroll_height()
108    );
109}