tui_temp_fork/widgets/
tabs.rs

1use unicode_width::UnicodeWidthStr;
2
3use crate::buffer::Buffer;
4use crate::layout::Rect;
5use crate::style::Style;
6use crate::symbols::line;
7use crate::widgets::{Block, Widget};
8
9/// A widget to display available tabs in a multiple panels context.
10///
11/// # Examples
12///
13/// ```
14/// # use tui_temp_fork::widgets::{Block, Borders, Tabs};
15/// # use tui_temp_fork::style::{Style, Color};
16/// # use tui_temp_fork::symbols::{DOT};
17/// # fn main() {
18/// Tabs::default()
19///     .block(Block::default().title("Tabs").borders(Borders::ALL))
20///     .titles(&["Tab1", "Tab2", "Tab3", "Tab4"])
21///     .style(Style::default().fg(Color::White))
22///     .highlight_style(Style::default().fg(Color::Yellow))
23///     .divider(DOT);
24/// # }
25/// ```
26pub struct Tabs<'a, T>
27where
28    T: AsRef<str> + 'a,
29{
30    /// A block to wrap this widget in if necessary
31    block: Option<Block<'a>>,
32    /// One title for each tab
33    titles: &'a [T],
34    /// The index of the selected tabs
35    selected: usize,
36    /// The style used to draw the text
37    style: Style,
38    /// The style used to display the selected item
39    highlight_style: Style,
40    /// Tab divider
41    divider: &'a str,
42}
43
44impl<'a, T> Default for Tabs<'a, T>
45where
46    T: AsRef<str>,
47{
48    fn default() -> Tabs<'a, T> {
49        Tabs {
50            block: None,
51            titles: &[],
52            selected: 0,
53            style: Default::default(),
54            highlight_style: Default::default(),
55            divider: line::VERTICAL,
56        }
57    }
58}
59
60impl<'a, T> Tabs<'a, T>
61where
62    T: AsRef<str>,
63{
64    pub fn block(mut self, block: Block<'a>) -> Tabs<'a, T> {
65        self.block = Some(block);
66        self
67    }
68
69    pub fn titles(mut self, titles: &'a [T]) -> Tabs<'a, T> {
70        self.titles = titles;
71        self
72    }
73
74    pub fn select(mut self, selected: usize) -> Tabs<'a, T> {
75        self.selected = selected;
76        self
77    }
78
79    pub fn style(mut self, style: Style) -> Tabs<'a, T> {
80        self.style = style;
81        self
82    }
83
84    pub fn highlight_style(mut self, style: Style) -> Tabs<'a, T> {
85        self.highlight_style = style;
86        self
87    }
88
89    pub fn divider(mut self, divider: &'a str) -> Tabs<'a, T> {
90        self.divider = divider;
91        self
92    }
93}
94
95impl<'a, T> Widget for Tabs<'a, T>
96where
97    T: AsRef<str>,
98{
99    fn draw(&mut self, area: Rect, buf: &mut Buffer) {
100        let tabs_area = match self.block {
101            Some(ref mut b) => {
102                b.draw(area, buf);
103                b.inner(area)
104            }
105            None => area,
106        };
107
108        if tabs_area.height < 1 {
109            return;
110        }
111
112        self.background(tabs_area, buf, self.style.bg);
113
114        let mut x = tabs_area.left();
115        let titles_length = self.titles.len();
116        let divider_width = self.divider.width() as u16;
117        for (title, style, last_title) in self.titles.iter().enumerate().map(|(i, t)| {
118            let lt = i + 1 == titles_length;
119            if i == self.selected {
120                (t, self.highlight_style, lt)
121            } else {
122                (t, self.style, lt)
123            }
124        }) {
125            x += 1;
126            if x > tabs_area.right() {
127                break;
128            } else {
129                buf.set_string(x, tabs_area.top(), title.as_ref(), style);
130                x += title.as_ref().width() as u16 + 1;
131                if x >= tabs_area.right() || last_title {
132                    break;
133                } else {
134                    buf.set_string(x, tabs_area.top(), self.divider, self.style);
135                    x += divider_width;
136                }
137            }
138        }
139    }
140}
tui_temp_fork/widgets/tabs.rs

tui_temp_fork/widgets/
tabs.rs
