egui_demo_lib 0.34.1

Example library for egui
Documentation 
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

#[derive(PartialEq)]
pub struct GridTest {
    num_cols: usize,
    num_rows: usize,
    min_col_width: f32,
    max_col_width: f32,
    text_length: usize,
}

impl Default for GridTest {
    fn default() -> Self {
        Self {
            num_cols: 4,
            num_rows: 4,
            min_col_width: 10.0,
            max_col_width: 200.0,
            text_length: 10,
        }
    }
}

impl crate::Demo for GridTest {
    fn name(&self) -> &'static str {
        "Grid Test"
    }

    fn show(&mut self, ui: &mut egui::Ui, open: &mut bool) {
        egui::Window::new(self.name())
            .open(open)
            .constrain_to(ui.available_rect_before_wrap())
            .show(ui, |ui| {
                use crate::View as _;
                self.ui(ui);
            });
    }
}

impl crate::View for GridTest {
    fn ui(&mut self, ui: &mut egui::Ui) {
        ui.add(
            egui::Slider::new(&mut self.min_col_width, 0.0..=400.0).text("Minimum column width"),
        );
        ui.add(
            egui::Slider::new(&mut self.max_col_width, 0.0..=400.0).text("Maximum column width"),
        );
        ui.add(egui::Slider::new(&mut self.num_cols, 0..=5).text("Columns"));
        ui.add(egui::Slider::new(&mut self.num_rows, 0..=20).text("Rows"));

        ui.separator();

        let words = [
            "random", "words", "in", "a", "random", "order", "that", "just", "keeps", "going",
            "with", "some", "more",
        ];

        egui::Grid::new("my_grid")
            .striped(true)
            .min_col_width(self.min_col_width)
            .max_col_width(self.max_col_width)
            .show(ui, |ui| {
                for row in 0..self.num_rows {
                    for col in 0..self.num_cols {
                        if col == 0 {
                            ui.label(format!("row {row}"));
                        } else {
                            let word_idx = row * 3 + col * 5;
                            let word_count = (row * 5 + col * 75) % 13;
                            let mut string = String::new();
                            for word in words.iter().cycle().skip(word_idx).take(word_count) {
                                string += word;
                                string += " ";
                            }
                            ui.label(string);
                        }
                    }
                    ui.end_row();
                }
            });

        ui.separator();
        ui.add(egui::Slider::new(&mut self.text_length, 1..=40).text("Text length"));
        egui::Grid::new("parent grid").striped(true).show(ui, |ui| {
            ui.vertical(|ui| {
                ui.label("Vertical nest1");
                ui.label("Vertical nest2");
            });
            ui.label("First row, second column");
            ui.end_row();

            ui.horizontal(|ui| {
                ui.label("Horizontal nest1");
                ui.label("Horizontal nest2");
            });
            ui.label("Second row, second column");
            ui.end_row();

            ui.scope(|ui| {
                ui.label("Scope nest 1");
                ui.label("Scope nest 2");
            });
            ui.label("Third row, second column");
            ui.end_row();

            egui::Grid::new("nested grid").show(ui, |ui| {
                ui.label("Grid nest11");
                ui.label("Grid nest12");
                ui.end_row();
                ui.label("Grid nest21");
                ui.label("Grid nest22");
                ui.end_row();
            });
            ui.label("Fourth row, second column");
            ui.end_row();

            let mut dyn_text = String::from("O");
            dyn_text.extend(std::iter::repeat_n('h', self.text_length));
            ui.label(dyn_text);
            ui.label("Fifth row, second column");
            ui.end_row();
        });

        ui.vertical_centered(|ui| {
            egui::reset_button(ui, self, "Reset");
            ui.add(crate::egui_github_link_file!());
        });
    }
}