rat-widget 3.2.1

ratatui widgets extended edition
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
128
129

use crate::mini_salsa::{MiniSalsaState, mock_init, run_ui, setup_logging};
use rat_event::{HandleEvent, Regular, try_flow};
use rat_focus::{Focus, FocusBuilder};
use rat_theme4::WidgetStyle;
use rat_widget::button::{Button, ButtonState};
use rat_widget::event::{ButtonOutcome, Outcome};
use ratatui_core::buffer::Buffer;
use ratatui_core::layout::{Constraint, Layout, Rect};
use ratatui_core::text::Span;
use ratatui_core::widgets::{StatefulWidget, Widget};
use ratatui_crossterm::crossterm::event::Event;
use ratatui_widgets::block::Block;

mod mini_salsa;

fn main() -> Result<(), anyhow::Error> {
    setup_logging()?;

    let mut state = State {
        button1: Default::default(),
        button2: Default::default(),
        button3: Default::default(),
        p0: 0,
        p1: 0,
        p2: 0,
    };

    run_ui("button1", mock_init, event, render, &mut state)
}

struct State {
    button1: ButtonState,
    button2: ButtonState,
    button3: ButtonState,

    p0: u8,
    p1: u8,
    p2: u8,
}

fn render(
    buf: &mut Buffer,
    area: Rect,
    ctx: &mut MiniSalsaState,
    state: &mut State,
) -> Result<(), anyhow::Error> {
    let l0 = Layout::horizontal([
        Constraint::Fill(1),
        Constraint::Length(15),
        Constraint::Fill(1),
    ])
    .split(area);

    let l1 = Layout::vertical([
        Constraint::Fill(1),
        Constraint::Length(3),
        Constraint::Length(5),
        Constraint::Length(5),
        Constraint::Fill(1),
    ])
    .spacing(1)
    .split(l0[1]);

    Button::new("Button")
        .block(Block::bordered())
        .styles(ctx.theme.style(WidgetStyle::BUTTON)) //
        .render(l1[1], buf, &mut state.button1);

    Button::new("Button\nPress\nButton")
        .styles(ctx.theme.style(WidgetStyle::BUTTON)) //
        .render(l1[2], buf, &mut state.button2);

    Button::new("Button")
        .styles(ctx.theme.style(WidgetStyle::BUTTON)) //
        .render(l1[3], buf, &mut state.button3);

    let l2 = Layout::vertical([
        Constraint::Fill(1),
        Constraint::Length(3),
        Constraint::Length(5),
        Constraint::Length(5),
        Constraint::Fill(1),
    ])
    .split(l0[2]);
    Span::from(format!("  {} | {} | {}", state.p0, state.p1, state.p2)).render(l2[1], buf);

    Ok(())
}

fn focus(state: &mut State) -> Focus {
    let mut fb = FocusBuilder::new(None);
    fb.widget(&state.button1);
    fb.widget(&state.button2);
    fb.widget(&state.button3);
    fb.build()
}

fn event(
    event: &Event,
    ctx: &mut MiniSalsaState,
    state: &mut State,
) -> Result<Outcome, anyhow::Error> {
    let mut focus = focus(state);
    ctx.focus_outcome = focus.handle(event, Regular);

    try_flow!(match state.button1.handle(event, Regular) {
        ButtonOutcome::Pressed => {
            state.p0 += 1;
            Outcome::Changed
        }
        r => r.into(),
    });
    try_flow!(match state.button2.handle(event, Regular) {
        ButtonOutcome::Pressed => {
            state.p1 += 1;
            Outcome::Changed
        }
        r => r.into(),
    });
    try_flow!(match state.button3.handle(event, Regular) {
        ButtonOutcome::Pressed => {
            state.p2 += 1;
            Outcome::Changed
        }
        r => r.into(),
    });

    Ok(Outcome::Continue)
}