term39 1.5.1

A modern, retro-styled terminal multiplexer with a classic MS-DOS aesthetic
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
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218

//! Window number overlay for Alt+1-9 quick selection
//! Shows window numbers when Alt/Cmd is held for 500ms+

use super::manager::WindowManager;
use crate::rendering::{Cell, Theme, VideoBuffer};

/// ASCII art digits using block characters (9 wide x 6 tall)
/// Index 0 is unused (for 1-based indexing convenience)
const ASCII_DIGITS: [&[&str]; 10] = [
    // 0 - placeholder (not used)
    &[
        "         ",
        "         ",
        "         ",
        "         ",
        "         ",
        "         ",
    ],
    // 1
    &[
        " \u{2588}\u{2588}      ",
        "\u{2588}\u{2588}\u{2588}      ",
        " \u{2588}\u{2588}      ",
        " \u{2588}\u{2588}      ",
        " \u{2588}\u{2588}      ",
        "         ",
    ],
    // 2
    &[
        "\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}   ",
        "     \u{2588}\u{2588}  ",
        " \u{2588}\u{2588}\u{2588}\u{2588}\u{2588}   ",
        "\u{2588}\u{2588}       ",
        "\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}  ",
        "         ",
    ],
    // 3
    &[
        "\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}   ",
        "     \u{2588}\u{2588}  ",
        " \u{2588}\u{2588}\u{2588}\u{2588}\u{2588}   ",
        "     \u{2588}\u{2588}  ",
        "\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}   ",
        "         ",
    ],
    // 4
    &[
        "\u{2588}\u{2588}   \u{2588}\u{2588}  ",
        "\u{2588}\u{2588}   \u{2588}\u{2588}  ",
        "\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}  ",
        "     \u{2588}\u{2588}  ",
        "     \u{2588}\u{2588}  ",
        "         ",
    ],
    // 5
    &[
        "\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}  ",
        "\u{2588}\u{2588}       ",
        "\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}  ",
        "     \u{2588}\u{2588}  ",
        "\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}  ",
        "         ",
    ],
    // 6
    &[
        " \u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}  ",
        "\u{2588}\u{2588}       ",
        "\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}  ",
        "\u{2588}\u{2588}    \u{2588}\u{2588} ",
        " \u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}  ",
        "         ",
    ],
    // 7
    &[
        "\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}  ",
        "     \u{2588}\u{2588}  ",
        "    \u{2588}\u{2588}   ",
        "   \u{2588}\u{2588}    ",
        "   \u{2588}\u{2588}    ",
        "         ",
    ],
    // 8
    &[
        " \u{2588}\u{2588}\u{2588}\u{2588}\u{2588}   ",
        "\u{2588}\u{2588}   \u{2588}\u{2588}  ",
        " \u{2588}\u{2588}\u{2588}\u{2588}\u{2588}   ",
        "\u{2588}\u{2588}   \u{2588}\u{2588}  ",
        " \u{2588}\u{2588}\u{2588}\u{2588}\u{2588}   ",
        "         ",
    ],
    // 9
    &[
        " \u{2588}\u{2588}\u{2588}\u{2588}\u{2588}   ",
        "\u{2588}\u{2588}   \u{2588}\u{2588}  ",
        " \u{2588}\u{2588}\u{2588}\u{2588}\u{2588}\u{2588}  ",
        "     \u{2588}\u{2588}  ",
        " \u{2588}\u{2588}\u{2588}\u{2588}\u{2588}   ",
        "         ",
    ],
];

/// Minimum window content area size to show ASCII art
const MIN_WIDTH_FOR_ASCII: u16 = 12;
const MIN_HEIGHT_FOR_ASCII: u16 = 10;

/// Extract number from window title (e.g., "Terminal 3" -> Some(3))
fn extract_number_from_title(title: &str) -> Option<usize> {
    // Look for "Terminal N" pattern - extract the number after "Terminal "
    if let Some(rest) = title.strip_prefix("Terminal ") {
        // Take only digits before any other content (e.g., "3 [ > bash ]" -> "3")
        let num_str: String = rest.chars().take_while(|c| c.is_ascii_digit()).collect();
        num_str.parse().ok()
    } else {
        None
    }
}

/// Render window numbers on all visible windows
pub fn render_window_numbers(
    buffer: &mut VideoBuffer,
    window_manager: &WindowManager,
    theme: &Theme,
) {
    // Get window positions with titles
    let positions = window_manager.get_window_positions();

    // Render overlay for each window using the number from its title
    for (_, x, y, width, height, is_minimized, title) in &positions {
        // Skip minimized windows
        if *is_minimized {
            continue;
        }

        // Extract number from window title (e.g., "Terminal 3" -> 3)
        let number = match extract_number_from_title(title) {
            Some(n) if (1..=9).contains(&n) => n,
            _ => continue, // Skip windows without valid 1-9 number in title
        };

        // Choose rendering style based on window size
        if *width >= MIN_WIDTH_FOR_ASCII && *height >= MIN_HEIGHT_FOR_ASCII {
            render_ascii_number(buffer, *x, *y, *width, *height, number, theme);
        } else {
            render_single_digit(buffer, *x, *y, *width, *height, number, theme);
        }
    }
}

/// Render ASCII art number centered in window content area
fn render_ascii_number(
    buffer: &mut VideoBuffer,
    win_x: u16,
    win_y: u16,
    win_width: u16,
    win_height: u16,
    number: usize,
    theme: &Theme,
) {
    let digit = &ASCII_DIGITS[number];
    let digit_width = 9u16;
    let digit_height = 6u16;

    // Calculate content area (inside borders: +1 for left border, title bar at top)
    let content_x = win_x + 1;
    let content_y = win_y + 1; // +1 for title bar
    let content_width = win_width.saturating_sub(2); // -2 for left/right borders
    let content_height = win_height.saturating_sub(2); // -1 title, -1 bottom border

    // Center the digit in content area
    let start_x = content_x + content_width.saturating_sub(digit_width) / 2;
    let start_y = content_y + content_height.saturating_sub(digit_height) / 2;

    let fg = theme.overlay_number_fg;
    let bg = theme.overlay_number_bg;

    for (row_idx, row) in digit.iter().enumerate() {
        for (col_idx, ch) in row.chars().enumerate() {
            let x = start_x + col_idx as u16;
            let y = start_y + row_idx as u16;

            // Only render if within window bounds
            if x >= content_x
                && x < content_x + content_width
                && y >= content_y
                && y < content_y + content_height
            {
                buffer.set(x, y, Cell::new_unchecked(ch, fg, bg));
            }
        }
    }
}

/// Render single digit centered in window (fallback for small windows)
fn render_single_digit(
    buffer: &mut VideoBuffer,
    win_x: u16,
    win_y: u16,
    win_width: u16,
    win_height: u16,
    number: usize,
    theme: &Theme,
) {
    // Calculate content area center
    let content_x = win_x + 1;
    let content_y = win_y + 1;
    let content_width = win_width.saturating_sub(2);
    let content_height = win_height.saturating_sub(2);

    let center_x = content_x + content_width / 2;
    let center_y = content_y + content_height / 2;

    let fg = theme.overlay_number_fg;
    let bg = theme.overlay_number_bg;

    // Render the digit character
    let digit_char = char::from_digit(number as u32, 10).unwrap_or('?');
    buffer.set(center_x, center_y, Cell::new_unchecked(digit_char, fg, bg));
}