ztmux 0.1.0

A Rust port of tmux — the full terminal multiplexer, server and client
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
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
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235

// Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
// IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
// OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
use crate::compat::queue::tailq_empty;
use crate::*;
use crate::options_::*;

pub static CMD_RESIZE_PANE_ENTRY: cmd_entry = cmd_entry {
    name: "resize-pane",
    alias: Some("resizep"),

    args: args_parse::new("DLMRTt:Ux:y:Z", 0, 1, None),
    usage: "[-DLMRTUZ] [-x width] [-y height] [-t target-pane] [adjustment]",

    target: cmd_entry_flag::new(b't', cmd_find_type::CMD_FIND_PANE, cmd_find_flags::empty()),

    flags: cmd_flag::CMD_AFTERHOOK,
    exec: cmd_resize_pane_exec,
    source: cmd_entry_flag::zeroed(),
};

/// C `vendor/tmux/cmd-resize-pane.c:55`: `static enum cmd_retval cmd_resize_pane_exec(struct cmd *self, struct cmdq_item *item)`
unsafe fn cmd_resize_pane_exec(self_: *mut cmd, item: *mut cmdq_item) -> cmd_retval {
    unsafe {
        let args = cmd_get_args(self_);
        let target = cmdq_get_target(item);
        let event = cmdq_get_event(item);
        let wp = (*target).wp;
        let wl = (*target).wl;
        let w = (*wl).window;
        let c = cmdq_get_client(item);
        let mut s = (*target).s;
        let mut cause: *mut u8 = null_mut();
        let mut adjust;
        let x: i32;
        let mut y: i32;
        let gd = (*wp).base.grid;

        if args_has(args, 'T') {
            if !tailq_empty(&raw mut (*wp).modes) {
                return cmd_retval::CMD_RETURN_NORMAL;
            }
            adjust = screen_size_y(&raw mut (*wp).base) - 1 - (*wp).base.cy;
            if adjust > (*gd).hsize {
                adjust = (*gd).hsize;
            }
            grid_remove_history(gd, adjust);
            (*wp).base.cy += adjust;
            (*wp).flags |= window_pane_flags::PANE_REDRAW;
            return cmd_retval::CMD_RETURN_NORMAL;
        }

        if args_has(args, 'M') {
            if !(*event).m.valid || cmd_mouse_window(&raw mut (*event).m, &raw mut s).is_none() {
                return cmd_retval::CMD_RETURN_NORMAL;
            }
            if c.is_null() || (*c).session != s {
                return cmd_retval::CMD_RETURN_NORMAL;
            }
            (*c).tty.mouse_drag_update = Some(cmd_resize_pane_mouse_update);
            cmd_resize_pane_mouse_update(c, &raw mut (*event).m);
            return cmd_retval::CMD_RETURN_NORMAL;
        }

        if args_has(args, 'Z') {
            if (*w).flags.intersects(window_flag::ZOOMED) {
                window_unzoom(w, 1);
            } else {
                window_zoom(wp);
            }
            server_redraw_window(w);
            return cmd_retval::CMD_RETURN_NORMAL;
        }
        server_unzoom_window(w);

        let adjust = if args_count(args) == 0 {
            1
        } else {
            match strtonum(args_string(args, 0), 1, i32::MAX) {
                Ok(n) => n,
                Err(errstr) => {
                    cmdq_error!(item, "adjustment {}", _s(errstr.as_ptr()));
                    return cmd_retval::CMD_RETURN_ERROR;
                }
            }
        };

        if args_has(args, 'x') {
            x = args_percentage(
                args,
                b'x',
                0,
                i32::MAX as i64,
                (*w).sx as i64,
                &raw mut cause,
            ) as i32;
            if !cause.is_null() {
                cmdq_error!(item, "width {}", _s(cause));
                free_(cause);
                return cmd_retval::CMD_RETURN_ERROR;
            }
            layout_resize_pane_to(wp, layout_type::LAYOUT_LEFTRIGHT, x as u32);
        }
        if args_has(args, 'y') {
            y = args_percentage(
                args,
                b'y',
                0,
                i32::MAX as i64,
                (*w).sy as i64,
                &raw mut cause,
            ) as i32;
            if !cause.is_null() {
                cmdq_error!(item, "height {}", _s(cause));
                free_(cause);
                return cmd_retval::CMD_RETURN_ERROR;
            }

            let status: i32 = options_get_number___(&*(*w).options, "pane-border-status");
            match pane_status::try_from(status) {
                Ok(pane_status::PANE_STATUS_TOP) => {
                    if y != i32::MAX && (*wp).yoff == 1 {
                        y += 1;
                    }
                }
                Ok(pane_status::PANE_STATUS_BOTTOM) => {
                    if y != i32::MAX && (*wp).yoff + (*wp).sy == (*w).sy - 1 {
                        y += 1;
                    }
                }
                Ok(pane_status::PANE_STATUS_OFF) | Err(_) => (),
            }
            layout_resize_pane_to(wp, layout_type::LAYOUT_TOPBOTTOM, y as u32);
        }

        if args_has(args, 'L') {
            layout_resize_pane(wp, layout_type::LAYOUT_LEFTRIGHT, -adjust, 1);
        } else if args_has(args, 'R') {
            layout_resize_pane(wp, layout_type::LAYOUT_LEFTRIGHT, adjust, 1);
        } else if args_has(args, 'U') {
            layout_resize_pane(wp, layout_type::LAYOUT_TOPBOTTOM, -adjust, 1);
        } else if args_has(args, 'D') {
            layout_resize_pane(wp, layout_type::LAYOUT_TOPBOTTOM, adjust, 1);
        }
        server_redraw_window((*wl).window);
    }

    cmd_retval::CMD_RETURN_NORMAL
}

/// C `vendor/tmux/cmd-resize-pane.c:192`: `static enum cmd_retval cmd_resize_pane_mouse_update(__unused struct cmd *self, struct cmdq_item *item)`
unsafe fn cmd_resize_pane_mouse_update(c: *mut client, m: *mut mouse_event) {
    unsafe {
        let mut y: u32;
        let mut ly: u32;

        const OFFSETS: [[c_int; 2]; 5] = [[0, 0], [0, 1], [1, 0], [0, -1], [-1, 0]];
        let mut ncells: u32 = 0;
        let mut cells: [*mut layout_cell; OFFSETS.len()] = zeroed();
        let mut resizes: u32 = 0;

        let wl: *mut winlink = transmute_ptr(cmd_mouse_window(m, null_mut()));
        if wl.is_null() {
            (*c).tty.mouse_drag_update = None;
            return;
        }
        let w: *mut window = (*wl).window;

        y = (*m).y + (*m).oy;
        let x: u32 = (*m).x + (*m).ox;
        if (*m).statusat == 0 && y >= (*m).statuslines {
            y -= (*m).statuslines;
        } else if (*m).statusat > 0 && y >= (*m).statusat as u32 {
            y = ((*m).statusat - 1) as u32;
        }
        ly = (*m).ly + (*m).oy;
        let lx: u32 = (*m).lx + (*m).ox;
        if (*m).statusat == 0 && ly >= (*m).statuslines {
            ly -= (*m).statuslines;
        } else if (*m).statusat > 0 && ly >= (*m).statusat as u32 {
            ly = ((*m).statusat - 1) as u32;
        }

        for offset in OFFSETS {
            let mut lc = layout_search_by_border(
                (*w).layout_root,
                (lx as i32 + offset[0]).max(0) as u32,
                (ly as i32 + offset[1]).max(0) as u32,
            );
            if lc.is_null() {
                continue;
            }

            for j in 0..ncells {
                if cells[j as usize] == lc {
                    lc = null_mut();
                    break;
                }
            }
            if lc.is_null() {
                continue;
            }

            cells[ncells as usize] = lc;
            ncells += 1;
        }
        if ncells == 0 {
            return;
        }

        for i in 0..ncells {
            let type_ = (*(*cells[i as usize]).parent).type_;
            if y != ly && type_ == layout_type::LAYOUT_TOPBOTTOM {
                layout_resize_layout(w, cells[i as usize], type_, y as i32 - ly as i32, 0);
                resizes += 1;
            } else if x != lx && type_ == layout_type::LAYOUT_LEFTRIGHT {
                layout_resize_layout(w, cells[i as usize], type_, x as i32 - lx as i32, 0);
                resizes += 1;
            }
        }
        if resizes != 0 {
            server_redraw_window(w);
        }
    }
}