tca-ratatui 0.6.0

TCA theme support for Ratatui terminal UI framework
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
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
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174

use crate::TcaTheme;
use ratatui::{
    buffer::Buffer,
    layout::{Constraint, Layout, Rect},
    style::{Style, Stylize},
    text::Line,
    widgets::{Block, Borders, Paragraph, Widget, Wrap},
};

/// Displays all color sections of a TCA theme.
///
/// Shows ANSI colors, semantic colors, UI colors, and base24 slots
/// in a three-column layout. Borrows the theme for the widget lifetime.
///
/// # Examples
///
/// ```rust,no_run
/// use tca_ratatui::{TcaTheme, ColorPicker};
/// # use ratatui::Frame;
/// # fn render(frame: &mut Frame, theme: &TcaTheme) {
/// let picker = ColorPicker::new(theme)
///     .title("Theme Preview")
///     .instructions("Press Q to quit");
///
/// frame.render_widget(picker, frame.area());
/// # }
/// ```
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct ColorPicker<'a> {
    theme: &'a TcaTheme,
    title: Option<String>,
    instructions: Option<String>,
}

impl<'a> ColorPicker<'a> {
    /// Create a new color picker for the given theme.
    pub const fn new(theme: &'a TcaTheme) -> Self {
        Self {
            theme,
            title: None,
            instructions: None,
        }
    }

    /// Set the title displayed at the top of the widget.
    pub fn title(mut self, title: impl Into<String>) -> Self {
        self.title = Some(title.into());
        self
    }

    /// Set the instructions displayed at the bottom of the widget.
    pub fn instructions(mut self, instructions: impl Into<String>) -> Self {
        self.instructions = Some(instructions.into());
        self
    }
}

impl Widget for ColorPicker<'_> {
    fn render(self, area: Rect, buf: &mut Buffer) {
        let theme = self.theme;

        let border_color = theme.ui.border_primary;
        let title_color = theme.ui.fg_primary;
        let bg = theme.ui.bg_primary;
        let fg = theme.ui.fg_primary;

        let mut block = Block::bordered()
            .bg(bg)
            .fg(fg)
            .borders(Borders::ALL)
            .border_style(Style::default().fg(border_color))
            .title_style(Style::default().fg(title_color));

        if let Some(title) = self.title {
            block = block.title(Line::from(title).centered());
        }

        if let Some(instructions) = self.instructions {
            block = block.title_bottom(Line::from(instructions).centered());
        }

        let inner = block.inner(area);
        block.render(area, buf);

        let chunks = Layout::horizontal([
            Constraint::Percentage(40),
            Constraint::Percentage(30),
            Constraint::Percentage(30),
        ])
        .split(inner);

        let mut left_lines = vec![Line::from(format!("Theme: {}", theme.meta.name))
            .style(Style::default().fg(title_color))];
        if !theme.meta.author.is_empty() {
            left_lines.push(Line::from(format!("Author: {}", theme.meta.author)));
        }

        left_lines.push(Line::from(""));
        left_lines.push(Line::from("ANSI Colors:"));
        left_lines.extend([
            Line::from("  black").style(Style::default().fg(theme.ansi.black)),
            Line::from("  red").style(Style::default().fg(theme.ansi.red)),
            Line::from("  green").style(Style::default().fg(theme.ansi.green)),
            Line::from("  yellow").style(Style::default().fg(theme.ansi.yellow)),
            Line::from("  blue").style(Style::default().fg(theme.ansi.blue)),
            Line::from("  magenta").style(Style::default().fg(theme.ansi.magenta)),
            Line::from("  cyan").style(Style::default().fg(theme.ansi.cyan)),
            Line::from("  white").style(Style::default().fg(theme.ansi.white)),
            Line::from("  bright_black").style(Style::default().fg(theme.ansi.bright_black)),
            Line::from("  bright_red").style(Style::default().fg(theme.ansi.bright_red)),
            Line::from("  bright_green").style(Style::default().fg(theme.ansi.bright_green)),
            Line::from("  bright_yellow").style(Style::default().fg(theme.ansi.bright_yellow)),
            Line::from("  bright_blue").style(Style::default().fg(theme.ansi.bright_blue)),
            Line::from("  bright_magenta").style(Style::default().fg(theme.ansi.bright_magenta)),
            Line::from("  bright_cyan").style(Style::default().fg(theme.ansi.bright_cyan)),
            Line::from("  bright_white").style(Style::default().fg(theme.ansi.bright_white)),
        ]);

        let mut center_lines = vec![Line::from("Semantic Colors:")];
        center_lines.extend([
            Line::from("  error").style(Style::default().fg(theme.semantic.error)),
            Line::from("  warning").style(Style::default().fg(theme.semantic.warning)),
            Line::from("  success").style(Style::default().fg(theme.semantic.success)),
            Line::from("  info").style(Style::default().fg(theme.semantic.info)),
            Line::from("  highlight").style(Style::default().fg(theme.semantic.highlight)),
            Line::from("  link").style(Style::default().fg(theme.semantic.link)),
        ]);

        center_lines.push(Line::from(""));
        center_lines.push(Line::from("UI Colors:"));
        center_lines.extend([
            Line::from("  bg_primary").style(
                Style::default()
                    .fg(theme.ui.bg_primary)
                    .bg(theme.ui.fg_primary),
            ),
            Line::from("  bg_secondary").style(
                Style::default()
                    .fg(theme.ui.bg_secondary)
                    .bg(theme.ui.fg_primary),
            ),
            Line::from("  fg_primary").style(Style::default().fg(theme.ui.fg_primary)),
            Line::from("  fg_secondary").style(Style::default().fg(theme.ui.fg_secondary)),
            Line::from("  fg_muted").style(Style::default().fg(theme.ui.fg_muted)),
            Line::from("  border_primary").style(Style::default().fg(theme.ui.border_primary)),
            Line::from("  border_muted").style(Style::default().fg(theme.ui.border_muted)),
            Line::from("  cursor_primary").style(Style::default().bg(theme.ui.cursor_primary)),
            Line::from("  cursor_muted").style(Style::default().bg(theme.ui.cursor_muted)),
            Line::from("  selection_bg").style(
                Style::default()
                    .bg(theme.ui.selection_bg)
                    .fg(theme.ui.fg_primary),
            ),
            Line::from("  selection_fg").style(Style::default().fg(theme.ui.selection_fg)),
        ]);

        let mut right_lines = vec![Line::from("Base24 Slots:")];
        let slot_names = [
            "base00", "base01", "base02", "base03", "base04", "base05", "base06", "base07",
            "base08", "base09", "base0a", "base0b", "base0c", "base0d", "base0e", "base0f",
            "base10", "base11", "base12", "base13", "base14", "base15", "base16", "base17",
        ];
        for (i, name) in slot_names.iter().enumerate() {
            right_lines.push(
                Line::from(format!("  {}", name)).style(Style::default().fg(theme.base24[i])),
            );
        }
        Paragraph::new(left_lines)
            .wrap(Wrap { trim: false })
            .render(chunks[0], buf);
        Paragraph::new(center_lines).render(chunks[1], buf);
        Paragraph::new(right_lines).render(chunks[2], buf);
    }
}