tawasuyu/taffy

1#[test]
2fn content_size() {
3    #[allow(unused_imports)]
4    use taffy::{prelude::*, tree::Layout, TaffyTree};
5    let mut taffy: TaffyTree<crate::TextMeasure> = TaffyTree::new();
6    let node00 = taffy
7        .new_leaf_with_context(
8            taffy::style::Style {
9                position: taffy::style::Position::Absolute,
10                flex_shrink: 0f32,
11                size: taffy::geometry::Size {
12                    width: taffy::style::Dimension::Percent(1f32),
13                    height: taffy::style::Dimension::Length(20f32),
14                },
15                inset: taffy::geometry::Rect {
16                    left: auto(),
17                    right: auto(),
18                    top: taffy::style::LengthPercentageAuto::Length(-10f32),
19                    bottom: auto(),
20                },
21                ..Default::default()
22            },
23            crate::TextMeasure {
24                text_content: "HHHH\u{200b}HHHH",
25                writing_mode: crate::WritingMode::Horizontal,
26                _aspect_ratio: None,
27            },
28        )
29        .unwrap();
30    let node0 = taffy
31        .new_with_children(
32            taffy::style::Style {
33                size: taffy::geometry::Size { width: auto(), height: taffy::style::Dimension::Length(30f32) },
34                ..Default::default()
35            },
36            &[node00],
37        )
38        .unwrap();
39    let node = taffy
40        .new_with_children(
41            taffy::style::Style {
42                display: taffy::style::Display::Flex,
43                flex_direction: taffy::style::FlexDirection::Column,
44                overflow: taffy::geometry::Point {
45                    x: taffy::style::Overflow::Visible,
46                    y: taffy::style::Overflow::Scroll,
47                },
48                scrollbar_width: 15f32,
49                size: taffy::geometry::Size {
50                    width: taffy::style::Dimension::Length(100f32),
51                    height: taffy::style::Dimension::Length(100f32),
52                },
53                ..Default::default()
54            },
55            &[node0],
56        )
57        .unwrap();
58    taffy.compute_layout_with_measure(node, taffy::geometry::Size::MAX_CONTENT, crate::test_measure_function).unwrap();
59    println!("\nComputed tree:");
60    taffy.print_tree(node);
61    println!();
62    #[cfg_attr(not(feature = "content_size"), allow(unused_variables))]
63    let layout @ Layout { size, location, .. } = taffy.layout(node).unwrap();
64    assert_eq!(size.width, 100f32, "width of node {:?}. Expected {}. Actual {}", node, 100f32, size.width);
65    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node, 100f32, size.height);
66    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node, 0f32, location.x);
67    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node, 0f32, location.y);
68    #[cfg(feature = "content_size")]
69    assert_eq!(
70        layout.scroll_width(),
71        0f32,
72        "scroll_width of node {:?}. Expected {}. Actual {}",
73        node,
74        0f32,
75        layout.scroll_width()
76    );
77    #[cfg(feature = "content_size")]
78    assert_eq!(
79        layout.scroll_height(),
80        0f32,
81        "scroll_height of node {:?}. Expected {}. Actual {}",
82        node,
83        0f32,
84        layout.scroll_height()
85    );
86    #[cfg_attr(not(feature = "content_size"), allow(unused_variables))]
87    let layout @ Layout { size, location, .. } = taffy.layout(node0).unwrap();
88    assert_eq!(size.width, 85f32, "width of node {:?}. Expected {}. Actual {}", node0, 85f32, size.width);
89    assert_eq!(size.height, 30f32, "height of node {:?}. Expected {}. Actual {}", node0, 30f32, size.height);
90    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0, 0f32, location.x);
91    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0, 0f32, location.y);
92    #[cfg(feature = "content_size")]
93    assert_eq!(
94        layout.scroll_width(),
95        0f32,
96        "scroll_width of node {:?}. Expected {}. Actual {}",
97        node0,
98        0f32,
99        layout.scroll_width()
100    );
101    #[cfg(feature = "content_size")]
102    assert_eq!(
103        layout.scroll_height(),
104        0f32,
105        "scroll_height of node {:?}. Expected {}. Actual {}",
106        node0,
107        0f32,
108        layout.scroll_height()
109    );
110    #[cfg_attr(not(feature = "content_size"), allow(unused_variables))]
111    let layout @ Layout { size, location, .. } = taffy.layout(node00).unwrap();
112    assert_eq!(size.width, 85f32, "width of node {:?}. Expected {}. Actual {}", node00, 85f32, size.width);
113    assert_eq!(size.height, 20f32, "height of node {:?}. Expected {}. Actual {}", node00, 20f32, size.height);
114    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node00, 0f32, location.x);
115    assert_eq!(location.y, -10f32, "y of node {:?}. Expected {}. Actual {}", node00, -10f32, location.y);
116    #[cfg(feature = "content_size")]
117    assert_eq!(
118        layout.scroll_width(),
119        0f32,
120        "scroll_width of node {:?}. Expected {}. Actual {}",
121        node00,
122        0f32,
123        layout.scroll_width()
124    );
125    #[cfg(feature = "content_size")]
126    assert_eq!(
127        layout.scroll_height(),
128        0f32,
129        "scroll_height of node {:?}. Expected {}. Actual {}",
130        node00,
131        0f32,
132        layout.scroll_height()
133    );
134}