1 /* $OpenBSD: cmd-resize-pane.c,v 1.52 2022/02/03 11:06:11 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 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); 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 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