xref: /openbsd-src/usr.bin/tmux/cmd-join-pane.c (revision 4b70baf6e17fc8b27fc1f7fa7929335753fa94c3)
1 /* $OpenBSD: cmd-join-pane.c,v 1.34 2019/04/17 14:37:48 nicm Exp $ */
2 
3 /*
4  * Copyright (c) 2011 George Nachman <tmux@georgester.com>
5  * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
6  *
7  * Permission to use, copy, modify, and distribute this software for any
8  * purpose with or without fee is hereby granted, provided that the above
9  * copyright notice and this permission notice appear in all copies.
10  *
11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
16  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
17  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18  */
19 
20 #include <sys/types.h>
21 
22 #include <paths.h>
23 #include <stdlib.h>
24 #include <unistd.h>
25 
26 #include "tmux.h"
27 
28 /*
29  * Join or move a pane into another (like split/swap/kill).
30  */
31 
32 static enum cmd_retval	cmd_join_pane_exec(struct cmd *, struct cmdq_item *);
33 
34 const struct cmd_entry cmd_join_pane_entry = {
35 	.name = "join-pane",
36 	.alias = "joinp",
37 
38 	.args = { "bdhvp:l:s:t:", 0, 0 },
39 	.usage = "[-bdhv] [-p percentage|-l size] " CMD_SRCDST_PANE_USAGE,
40 
41 	.source = { 's', CMD_FIND_PANE, CMD_FIND_DEFAULT_MARKED },
42 	.target = { 't', CMD_FIND_PANE, 0 },
43 
44 	.flags = 0,
45 	.exec = cmd_join_pane_exec
46 };
47 
48 const struct cmd_entry cmd_move_pane_entry = {
49 	.name = "move-pane",
50 	.alias = "movep",
51 
52 	.args = { "bdhvp:l:s:t:", 0, 0 },
53 	.usage = "[-bdhv] [-p percentage|-l size] " CMD_SRCDST_PANE_USAGE,
54 
55 	.source = { 's', CMD_FIND_PANE, 0 },
56 	.target = { 't', CMD_FIND_PANE, 0 },
57 
58 	.flags = 0,
59 	.exec = cmd_join_pane_exec
60 };
61 
62 static enum cmd_retval
63 cmd_join_pane_exec(struct cmd *self, struct cmdq_item *item)
64 {
65 	struct args		*args = self->args;
66 	struct cmd_find_state	*current = &item->shared->current;
67 	struct session		*dst_s;
68 	struct winlink		*src_wl, *dst_wl;
69 	struct window		*src_w, *dst_w;
70 	struct window_pane	*src_wp, *dst_wp;
71 	char			*cause;
72 	int			 size, percentage, dst_idx;
73 	enum layout_type	 type;
74 	struct layout_cell	*lc;
75 	int			 not_same_window, flags;
76 
77 	if (self->entry == &cmd_join_pane_entry)
78 		not_same_window = 1;
79 	else
80 		not_same_window = 0;
81 
82 	dst_s = item->target.s;
83 	dst_wl = item->target.wl;
84 	dst_wp = item->target.wp;
85 	dst_w = dst_wl->window;
86 	dst_idx = dst_wl->idx;
87 	server_unzoom_window(dst_w);
88 
89 	src_wl = item->source.wl;
90 	src_wp = item->source.wp;
91 	src_w = src_wl->window;
92 	server_unzoom_window(src_w);
93 
94 	if (not_same_window && src_w == dst_w) {
95 		cmdq_error(item, "can't join a pane to its own window");
96 		return (CMD_RETURN_ERROR);
97 	}
98 	if (!not_same_window && src_wp == dst_wp) {
99 		cmdq_error(item, "source and target panes must be different");
100 		return (CMD_RETURN_ERROR);
101 	}
102 
103 	type = LAYOUT_TOPBOTTOM;
104 	if (args_has(args, 'h'))
105 		type = LAYOUT_LEFTRIGHT;
106 
107 	size = -1;
108 	if (args_has(args, 'l')) {
109 		size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
110 		if (cause != NULL) {
111 			cmdq_error(item, "size %s", cause);
112 			free(cause);
113 			return (CMD_RETURN_ERROR);
114 		}
115 	} else if (args_has(args, 'p')) {
116 		percentage = args_strtonum(args, 'p', 0, 100, &cause);
117 		if (cause != NULL) {
118 			cmdq_error(item, "percentage %s", cause);
119 			free(cause);
120 			return (CMD_RETURN_ERROR);
121 		}
122 		if (type == LAYOUT_TOPBOTTOM)
123 			size = (dst_wp->sy * percentage) / 100;
124 		else
125 			size = (dst_wp->sx * percentage) / 100;
126 	}
127 	if (args_has(args, 'b'))
128 		flags = SPAWN_BEFORE;
129 	else
130 		flags = 0;
131 	lc = layout_split_pane(dst_wp, type, size, flags);
132 	if (lc == NULL) {
133 		cmdq_error(item, "create pane failed: pane too small");
134 		return (CMD_RETURN_ERROR);
135 	}
136 
137 	layout_close_pane(src_wp);
138 
139 	window_lost_pane(src_w, src_wp);
140 	TAILQ_REMOVE(&src_w->panes, src_wp, entry);
141 
142 	src_wp->window = dst_w;
143 	TAILQ_INSERT_AFTER(&dst_w->panes, dst_wp, src_wp, entry);
144 	layout_assign_pane(lc, src_wp);
145 
146 	recalculate_sizes();
147 
148 	server_redraw_window(src_w);
149 	server_redraw_window(dst_w);
150 
151 	if (!args_has(args, 'd')) {
152 		window_set_active_pane(dst_w, src_wp, 1);
153 		session_select(dst_s, dst_idx);
154 		cmd_find_from_session(current, dst_s, 0);
155 		server_redraw_session(dst_s);
156 	} else
157 		server_status_session(dst_s);
158 
159 	if (window_count_panes(src_w) == 0)
160 		server_kill_window(src_w);
161 	else
162 		notify_window("window-layout-changed", src_w);
163 	notify_window("window-layout-changed", dst_w);
164 
165 	return (CMD_RETURN_NORMAL);
166 }
167