cmd-resize-pane.c

   1 /* $OpenBSD$ */
   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, 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
 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 }