tawasuyu/taffy

1#[test]
2fn gap_column_gap_determines_parent_width() {
3    #[allow(unused_imports)]
4    use taffy::{prelude::*, tree::Layout, TaffyTree};
5    let mut taffy: TaffyTree<crate::TextMeasure> = TaffyTree::new();
6    let node0 = taffy
7        .new_leaf(taffy::style::Style {
8            size: taffy::geometry::Size { width: taffy::style::Dimension::Length(10f32), height: auto() },
9            ..Default::default()
10        })
11        .unwrap();
12    let node1 = taffy
13        .new_leaf(taffy::style::Style {
14            size: taffy::geometry::Size { width: taffy::style::Dimension::Length(20f32), height: auto() },
15            ..Default::default()
16        })
17        .unwrap();
18    let node2 = taffy
19        .new_leaf(taffy::style::Style {
20            size: taffy::geometry::Size { width: taffy::style::Dimension::Length(30f32), height: auto() },
21            ..Default::default()
22        })
23        .unwrap();
24    let node = taffy
25        .new_with_children(
26            taffy::style::Style {
27                align_items: Some(taffy::style::AlignItems::Stretch),
28                gap: taffy::geometry::Size { width: taffy::style::LengthPercentage::Length(10f32), height: zero() },
29                size: taffy::geometry::Size { width: auto(), height: taffy::style::Dimension::Length(100f32) },
30                ..Default::default()
31            },
32            &[node0, node1, node2],
33        )
34        .unwrap();
35    taffy.compute_layout_with_measure(node, taffy::geometry::Size::MAX_CONTENT, crate::test_measure_function).unwrap();
36    println!("\nComputed tree:");
37    taffy.print_tree(node);
38    println!();
39    #[cfg_attr(not(feature = "content_size"), allow(unused_variables))]
40    let layout @ Layout { size, location, .. } = taffy.layout(node).unwrap();
41    assert_eq!(size.width, 80f32, "width of node {:?}. Expected {}. Actual {}", node, 80f32, size.width);
42    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node, 100f32, size.height);
43    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node, 0f32, location.x);
44    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node, 0f32, location.y);
45    #[cfg(feature = "content_size")]
46    assert_eq!(
47        layout.scroll_width(),
48        0f32,
49        "scroll_width of node {:?}. Expected {}. Actual {}",
50        node,
51        0f32,
52        layout.scroll_width()
53    );
54    #[cfg(feature = "content_size")]
55    assert_eq!(
56        layout.scroll_height(),
57        0f32,
58        "scroll_height of node {:?}. Expected {}. Actual {}",
59        node,
60        0f32,
61        layout.scroll_height()
62    );
63    #[cfg_attr(not(feature = "content_size"), allow(unused_variables))]
64    let layout @ Layout { size, location, .. } = taffy.layout(node0).unwrap();
65    assert_eq!(size.width, 10f32, "width of node {:?}. Expected {}. Actual {}", node0, 10f32, size.width);
66    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node0, 100f32, size.height);
67    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0, 0f32, location.x);
68    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0, 0f32, location.y);
69    #[cfg(feature = "content_size")]
70    assert_eq!(
71        layout.scroll_width(),
72        0f32,
73        "scroll_width of node {:?}. Expected {}. Actual {}",
74        node0,
75        0f32,
76        layout.scroll_width()
77    );
78    #[cfg(feature = "content_size")]
79    assert_eq!(
80        layout.scroll_height(),
81        0f32,
82        "scroll_height of node {:?}. Expected {}. Actual {}",
83        node0,
84        0f32,
85        layout.scroll_height()
86    );
87    #[cfg_attr(not(feature = "content_size"), allow(unused_variables))]
88    let layout @ Layout { size, location, .. } = taffy.layout(node1).unwrap();
89    assert_eq!(size.width, 20f32, "width of node {:?}. Expected {}. Actual {}", node1, 20f32, size.width);
90    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node1, 100f32, size.height);
91    assert_eq!(location.x, 20f32, "x of node {:?}. Expected {}. Actual {}", node1, 20f32, location.x);
92    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node1, 0f32, location.y);
93    #[cfg(feature = "content_size")]
94    assert_eq!(
95        layout.scroll_width(),
96        0f32,
97        "scroll_width of node {:?}. Expected {}. Actual {}",
98        node1,
99        0f32,
100        layout.scroll_width()
101    );
102    #[cfg(feature = "content_size")]
103    assert_eq!(
104        layout.scroll_height(),
105        0f32,
106        "scroll_height of node {:?}. Expected {}. Actual {}",
107        node1,
108        0f32,
109        layout.scroll_height()
110    );
111    #[cfg_attr(not(feature = "content_size"), allow(unused_variables))]
112    let layout @ Layout { size, location, .. } = taffy.layout(node2).unwrap();
113    assert_eq!(size.width, 30f32, "width of node {:?}. Expected {}. Actual {}", node2, 30f32, size.width);
114    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node2, 100f32, size.height);
115    assert_eq!(location.x, 50f32, "x of node {:?}. Expected {}. Actual {}", node2, 50f32, location.x);
116    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node2, 0f32, location.y);
117    #[cfg(feature = "content_size")]
118    assert_eq!(
119        layout.scroll_width(),
120        0f32,
121        "scroll_width of node {:?}. Expected {}. Actual {}",
122        node2,
123        0f32,
124        layout.scroll_width()
125    );
126    #[cfg(feature = "content_size")]
127    assert_eq!(
128        layout.scroll_height(),
129        0f32,
130        "scroll_height of node {:?}. Expected {}. Actual {}",
131        node2,
132        0f32,
133        layout.scroll_height()
134    );
135}