1 /* $OpenBSD: cmd-resize-pane.c,v 1.39 2019/10/15 08:25:37 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 = { "DLMRt:Ux:y:Z", 0, 1 }, 40 .usage = "[-DLMRUZ] [-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 = self->args; 53 struct cmdq_shared *shared = item->shared; 54 struct window_pane *wp = item->target.wp; 55 struct winlink *wl = item->target.wl; 56 struct window *w = wl->window; 57 struct client *c = item->client; 58 struct session *s = item->target.s; 59 const char *errstr, *p; 60 char *cause, *copy; 61 u_int adjust; 62 int x, y, percentage; 63 size_t plen; 64 65 if (args_has(args, 'M')) { 66 if (cmd_mouse_window(&shared->mouse, &s) == NULL) 67 return (CMD_RETURN_NORMAL); 68 if (c == NULL || c->session != s) 69 return (CMD_RETURN_NORMAL); 70 c->tty.mouse_drag_update = cmd_resize_pane_mouse_update; 71 cmd_resize_pane_mouse_update(c, &shared->mouse); 72 return (CMD_RETURN_NORMAL); 73 } 74 75 if (args_has(args, 'Z')) { 76 if (w->flags & WINDOW_ZOOMED) 77 window_unzoom(w); 78 else 79 window_zoom(wp); 80 server_redraw_window(w); 81 server_status_window(w); 82 return (CMD_RETURN_NORMAL); 83 } 84 server_unzoom_window(w); 85 86 if (args->argc == 0) 87 adjust = 1; 88 else { 89 adjust = strtonum(args->argv[0], 1, INT_MAX, &errstr); 90 if (errstr != NULL) { 91 cmdq_error(item, "adjustment %s", errstr); 92 return (CMD_RETURN_ERROR); 93 } 94 } 95 96 if ((p = args_get(args, 'x')) != NULL) { 97 plen = strlen(p); 98 if (p[plen - 1] == '%') { 99 copy = xstrdup(p); 100 copy[plen - 1] = '\0'; 101 percentage = strtonum(copy, 0, INT_MAX, &errstr); 102 free(copy); 103 if (errstr != NULL) { 104 cmdq_error(item, "width %s", errstr); 105 return (CMD_RETURN_ERROR); 106 } 107 x = (w->sx * percentage) / 100; 108 if (x < PANE_MINIMUM) 109 x = PANE_MINIMUM; 110 if (x > INT_MAX) 111 x = INT_MAX; 112 } else { 113 x = args_strtonum(args, 'x', PANE_MINIMUM, INT_MAX, 114 &cause); 115 if (cause != NULL) { 116 cmdq_error(item, "width %s", cause); 117 free(cause); 118 return (CMD_RETURN_ERROR); 119 } 120 } 121 layout_resize_pane_to(wp, LAYOUT_LEFTRIGHT, x); 122 } 123 if ((p = args_get(args, 'y')) != NULL) { 124 plen = strlen(p); 125 if (p[plen - 1] == '%') { 126 copy = xstrdup(p); 127 copy[plen - 1] = '\0'; 128 percentage = strtonum(copy, 0, INT_MAX, &errstr); 129 free(copy); 130 if (errstr != NULL) { 131 cmdq_error(item, "height %s", errstr); 132 return (CMD_RETURN_ERROR); 133 } 134 y = (w->sy * percentage) / 100; 135 if (y < PANE_MINIMUM) 136 y = PANE_MINIMUM; 137 if (y > INT_MAX) 138 y = INT_MAX; 139 } 140 else { 141 y = args_strtonum(args, 'y', PANE_MINIMUM, INT_MAX, 142 &cause); 143 if (cause != NULL) { 144 cmdq_error(item, "height %s", cause); 145 free(cause); 146 return (CMD_RETURN_ERROR); 147 } 148 } 149 layout_resize_pane_to(wp, LAYOUT_TOPBOTTOM, y); 150 } 151 152 if (args_has(args, 'L')) 153 layout_resize_pane(wp, LAYOUT_LEFTRIGHT, -adjust, 1); 154 else if (args_has(args, 'R')) 155 layout_resize_pane(wp, LAYOUT_LEFTRIGHT, adjust, 1); 156 else if (args_has(args, 'U')) 157 layout_resize_pane(wp, LAYOUT_TOPBOTTOM, -adjust, 1); 158 else if (args_has(args, 'D')) 159 layout_resize_pane(wp, LAYOUT_TOPBOTTOM, adjust, 1); 160 server_redraw_window(wl->window); 161 162 return (CMD_RETURN_NORMAL); 163 } 164 165 static void 166 cmd_resize_pane_mouse_update(struct client *c, struct mouse_event *m) 167 { 168 struct winlink *wl; 169 struct window *w; 170 u_int y, ly, x, lx; 171 static const int offsets[][2] = { 172 { 0, 0 }, { 0, 1 }, { 1, 0 }, { 0, -1 }, { -1, 0 }, 173 }; 174 struct layout_cell *cells[nitems(offsets)], *lc; 175 u_int ncells = 0, i, j, resizes = 0; 176 enum layout_type type; 177 178 wl = cmd_mouse_window(m, NULL); 179 if (wl == NULL) { 180 c->tty.mouse_drag_update = NULL; 181 return; 182 } 183 w = wl->window; 184 185 y = m->y + m->oy; x = m->x + m->ox; 186 if (m->statusat == 0 && y >= m->statuslines) 187 y -= m->statuslines; 188 else if (m->statusat > 0 && y >= (u_int)m->statusat) 189 y = m->statusat - 1; 190 ly = m->ly + m->oy; lx = m->lx + m->ox; 191 if (m->statusat == 0 && ly >= m->statuslines) 192 ly -= m->statuslines; 193 else if (m->statusat > 0 && ly >= (u_int)m->statusat) 194 ly = m->statusat - 1; 195 196 for (i = 0; i < nitems(cells); i++) { 197 lc = layout_search_by_border(w->layout_root, lx + offsets[i][0], 198 ly + offsets[i][1]); 199 if (lc == NULL) 200 continue; 201 202 for (j = 0; j < ncells; j++) { 203 if (cells[j] == lc) { 204 lc = NULL; 205 break; 206 } 207 } 208 if (lc == NULL) 209 continue; 210 211 cells[ncells] = lc; 212 ncells++; 213 } 214 if (ncells == 0) 215 return; 216 217 for (i = 0; i < ncells; i++) { 218 type = cells[i]->parent->type; 219 if (y != ly && type == LAYOUT_TOPBOTTOM) { 220 layout_resize_layout(w, cells[i], type, y - ly, 0); 221 resizes++; 222 } else if (x != lx && type == LAYOUT_LEFTRIGHT) { 223 layout_resize_layout(w, cells[i], type, x - lx, 0); 224 resizes++; 225 } 226 } 227 if (resizes != 0) 228 server_redraw_window(w); 229 } 230