1 /* $OpenBSD: cmd-resize-pane.c,v 1.53 2024/03/21 11:30:42 nicm Exp $ */
2
3 /*
4 * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/types.h>
20
21 #include <stdlib.h>
22 #include <string.h>
23
24 #include "tmux.h"
25
26 /*
27 * Increase or decrease pane size.
28 */
29
30 static enum cmd_retval cmd_resize_pane_exec(struct cmd *, struct cmdq_item *);
31
32 static void cmd_resize_pane_mouse_update(struct client *,
33 struct mouse_event *);
34
35 const struct cmd_entry cmd_resize_pane_entry = {
36 .name = "resize-pane",
37 .alias = "resizep",
38
39 .args = { "DLMRTt:Ux:y:Z", 0, 1, NULL },
40 .usage = "[-DLMRTUZ] [-x width] [-y height] " CMD_TARGET_PANE_USAGE " "
41 "[adjustment]",
42
43 .target = { 't', CMD_FIND_PANE, 0 },
44
45 .flags = CMD_AFTERHOOK,
46 .exec = cmd_resize_pane_exec
47 };
48
49 static enum cmd_retval
cmd_resize_pane_exec(struct cmd * self,struct cmdq_item * item)50 cmd_resize_pane_exec(struct cmd *self, struct cmdq_item *item)
51 {
52 struct args *args = cmd_get_args(self);
53 struct cmd_find_state *target = cmdq_get_target(item);
54 struct key_event *event = cmdq_get_event(item);
55 struct window_pane *wp = target->wp;
56 struct winlink *wl = target->wl;
57 struct window *w = wl->window;
58 struct client *c = cmdq_get_client(item);
59 struct session *s = target->s;
60 const char *errstr;
61 char *cause;
62 u_int adjust;
63 int x, y, status;
64 struct grid *gd = wp->base.grid;
65
66 if (args_has(args, 'T')) {
67 if (!TAILQ_EMPTY(&wp->modes))
68 return (CMD_RETURN_NORMAL);
69 adjust = screen_size_y(&wp->base) - 1 - wp->base.cy;
70 if (adjust > gd->hsize)
71 adjust = gd->hsize;
72 grid_remove_history(gd, adjust);
73 wp->base.cy += adjust;
74 wp->flags |= PANE_REDRAW;
75 return (CMD_RETURN_NORMAL);
76 }
77
78 if (args_has(args, 'M')) {
79 if (!event->m.valid || cmd_mouse_window(&event->m, &s) == NULL)
80 return (CMD_RETURN_NORMAL);
81 if (c == NULL || c->session != s)
82 return (CMD_RETURN_NORMAL);
83 c->tty.mouse_drag_update = cmd_resize_pane_mouse_update;
84 cmd_resize_pane_mouse_update(c, &event->m);
85 return (CMD_RETURN_NORMAL);
86 }
87
88 if (args_has(args, 'Z')) {
89 if (w->flags & WINDOW_ZOOMED)
90 window_unzoom(w, 1);
91 else
92 window_zoom(wp);
93 server_redraw_window(w);
94 return (CMD_RETURN_NORMAL);
95 }
96 server_unzoom_window(w);
97
98 if (args_count(args) == 0)
99 adjust = 1;
100 else {
101 adjust = strtonum(args_string(args, 0), 1, INT_MAX, &errstr);
102 if (errstr != NULL) {
103 cmdq_error(item, "adjustment %s", errstr);
104 return (CMD_RETURN_ERROR);
105 }
106 }
107
108 if (args_has(args, 'x')) {
109 x = args_percentage(args, 'x', 0, INT_MAX, w->sx, &cause);
110 if (cause != NULL) {
111 cmdq_error(item, "width %s", cause);
112 free(cause);
113 return (CMD_RETURN_ERROR);
114 }
115 layout_resize_pane_to(wp, LAYOUT_LEFTRIGHT, x);
116 }
117 if (args_has(args, 'y')) {
118 y = args_percentage(args, 'y', 0, INT_MAX, w->sy, &cause);
119 if (cause != NULL) {
120 cmdq_error(item, "height %s", cause);
121 free(cause);
122 return (CMD_RETURN_ERROR);
123 }
124 status = options_get_number(w->options, "pane-border-status");
125 switch (status) {
126 case PANE_STATUS_TOP:
127 if (y != INT_MAX && wp->yoff == 1)
128 y++;
129 break;
130 case PANE_STATUS_BOTTOM:
131 if (y != INT_MAX && wp->yoff + wp->sy == w->sy - 1)
132 y++;
133 break;
134 }
135 layout_resize_pane_to(wp, LAYOUT_TOPBOTTOM, y);
136 }
137
138 if (args_has(args, 'L'))
139 layout_resize_pane(wp, LAYOUT_LEFTRIGHT, -adjust, 1);
140 else if (args_has(args, 'R'))
141 layout_resize_pane(wp, LAYOUT_LEFTRIGHT, adjust, 1);
142 else if (args_has(args, 'U'))
143 layout_resize_pane(wp, LAYOUT_TOPBOTTOM, -adjust, 1);
144 else if (args_has(args, 'D'))
145 layout_resize_pane(wp, LAYOUT_TOPBOTTOM, adjust, 1);
146 server_redraw_window(wl->window);
147
148 return (CMD_RETURN_NORMAL);
149 }
150
151 static void
cmd_resize_pane_mouse_update(struct client * c,struct mouse_event * m)152 cmd_resize_pane_mouse_update(struct client *c, struct mouse_event *m)
153 {
154 struct winlink *wl;
155 struct window *w;
156 u_int y, ly, x, lx;
157 static const int offsets[][2] = {
158 { 0, 0 }, { 0, 1 }, { 1, 0 }, { 0, -1 }, { -1, 0 },
159 };
160 struct layout_cell *cells[nitems(offsets)], *lc;
161 u_int ncells = 0, i, j, resizes = 0;
162 enum layout_type type;
163
164 wl = cmd_mouse_window(m, NULL);
165 if (wl == NULL) {
166 c->tty.mouse_drag_update = NULL;
167 return;
168 }
169 w = wl->window;
170
171 y = m->y + m->oy; x = m->x + m->ox;
172 if (m->statusat == 0 && y >= m->statuslines)
173 y -= m->statuslines;
174 else if (m->statusat > 0 && y >= (u_int)m->statusat)
175 y = m->statusat - 1;
176 ly = m->ly + m->oy; lx = m->lx + m->ox;
177 if (m->statusat == 0 && ly >= m->statuslines)
178 ly -= m->statuslines;
179 else if (m->statusat > 0 && ly >= (u_int)m->statusat)
180 ly = m->statusat - 1;
181
182 for (i = 0; i < nitems(cells); i++) {
183 lc = layout_search_by_border(w->layout_root, lx + offsets[i][0],
184 ly + offsets[i][1]);
185 if (lc == NULL)
186 continue;
187
188 for (j = 0; j < ncells; j++) {
189 if (cells[j] == lc) {
190 lc = NULL;
191 break;
192 }
193 }
194 if (lc == NULL)
195 continue;
196
197 cells[ncells] = lc;
198 ncells++;
199 }
200 if (ncells == 0)
201 return;
202
203 for (i = 0; i < ncells; i++) {
204 type = cells[i]->parent->type;
205 if (y != ly && type == LAYOUT_TOPBOTTOM) {
206 layout_resize_layout(w, cells[i], type, y - ly, 0);
207 resizes++;
208 } else if (x != lx && type == LAYOUT_LEFTRIGHT) {
209 layout_resize_layout(w, cells[i], type, x - lx, 0);
210 resizes++;
211 }
212 }
213 if (resizes != 0)
214 server_redraw_window(w);
215 }
216