1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159

use std::time::Duration;

use dioxus::prelude::*;
use freya_elements as dioxus_elements;
use freya_hooks::{
    use_animation_with_dependencies,
    use_node_signal_with_prev,
    AnimDirection,
    AnimNum,
    Ease,
    Function,
};

#[component]
pub fn AnimatedPosition(
    children: Element,
    width: String,
    height: String,
    #[props(default = Function::default())] function: Function,
    #[props(default = Duration::from_millis(250))] duration: Duration,
    #[props(default = Ease::default())] ease: Ease,
) -> Element {
    let mut render_element = use_signal(|| false);
    let (reference, size, old_size) = use_node_signal_with_prev();

    let animation = use_animation_with_dependencies(
        &(function, duration, ease),
        move |_conf, (function, duration, ease)| {
            let old_size = old_size().unwrap_or_default();
            let size = size().unwrap_or_default();
            (
                AnimNum::new(size.area.origin.x, old_size.area.origin.x)
                    .duration(duration)
                    .ease(ease)
                    .function(function),
                AnimNum::new(size.area.origin.y, old_size.area.origin.y)
                    .duration(duration)
                    .ease(ease)
                    .function(function),
            )
        },
    );

    use_effect(move || {
        if animation.is_running() {
            render_element.set(true);
        }
    });

    use_effect(move || {
        let has_size = size.read().is_some();
        let has_old_size = old_size.read().is_some();
        if has_size && has_old_size {
            animation.run(AnimDirection::Reverse);
        } else if has_size {
            render_element.set(true);
        }
    });

    let (offset_x, offset_y) = &*animation.get().read_unchecked();
    let offset_x = offset_x.read();
    let offset_y = offset_y.read();

    rsx!(
        rect {
            reference,
            width: "{width}",
            height: "{height}",
            rect {
                width: "0",
                height: "0",
                offset_x: "{offset_x}",
                offset_y: "{offset_y}",
                position: "global",
                if render_element() {
                    rect {
                        width: "{size.read().as_ref().unwrap().area.width()}",
                        height: "{size.read().as_ref().unwrap().area.height()}",
                        {children}
                    }
                }
            }
        }
    )
}

#[cfg(test)]
mod test {
    use std::time::Duration;

    use freya::prelude::*;
    use freya_testing::prelude::*;

    #[tokio::test]
    pub async fn animated_position() {
        fn animated_position_app() -> Element {
            let mut padding = use_signal(|| (100., 100.));

            rsx!(
                rect {
                    padding: "{padding().0} {padding().1}",
                    onclick: move |_| {
                        padding.write().0 += 10.;
                        padding.write().1 += 10.;
                    },
                    AnimatedPosition {
                        width: "50",
                        height: "50",
                        function: Function::Linear
                    }
                }
            )
        }

        let mut utils = launch_test(animated_position_app);

        // Disable event loop ticker
        utils.config().event_loop_ticker = false;

        let root = utils.root();
        utils.wait_for_update().await;
        utils.wait_for_update().await;

        let get_positions = || {
            root.get(0)
                .get(0)
                .get(0)
                .get(0)
                .layout()
                .unwrap()
                .area
                .origin
        };

        assert_eq!(get_positions().x, 100.);
        assert_eq!(get_positions().y, 100.);

        utils.click_cursor((5.0, 5.0)).await;
        utils.wait_for_update().await;
        utils.wait_for_update().await;
        tokio::time::sleep(Duration::from_millis(125)).await;
        utils.wait_for_update().await;
        utils.wait_for_update().await;

        assert!(get_positions().x < 106.);
        assert!(get_positions().x > 105.);

        assert!(get_positions().y < 106.);
        assert!(get_positions().y > 105.);

        utils.config().event_loop_ticker = true;

        utils.wait_for_update().await;
        tokio::time::sleep(Duration::from_millis(125)).await;
        utils.wait_for_update().await;

        assert_eq!(get_positions().x, 110.);
    }
}