git.sur5r.net Git - i3/i3/blob - src/commands.c

   1 /*
   2  * vim:ts=8:expandtab
   3  *
   4  * i3 - an improved dynamic tiling window manager
   5  *
   6  * © 2009-2010 Michael Stapelberg and contributors
   7  *
   8  * See file LICENSE for license information.
   9  *
  10  */
  11 #include <stdbool.h>
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #include <assert.h>
  15 #include <unistd.h>
  16 #include <string.h>
  17
  18 #include <xcb/xcb.h>
  19
  20 #include "util.h"
  21 #include "data.h"
  22 #include "table.h"
  23 #include "layout.h"
  24 #include "i3.h"
  25 #include "randr.h"
  26 #include "client.h"
  27 #include "floating.h"
  28 #include "xcb.h"
  29 #include "config.h"
  30 #include "workspace.h"
  31 #include "commands.h"
  32 #include "resize.h"
  33 #include "log.h"
  34 #include "sighandler.h"
  35 #include "manage.h"
  36
  37 bool focus_window_in_container(xcb_connection_t *conn, Container *container, direction_t direction) {
  38         /* If this container is empty, we’re done */
  39         if (container->currently_focused == NULL)
  40                 return false;
  41
  42         /* Get the previous/next client or wrap around */
  43         Client *candidate = NULL;
  44         if (direction == D_UP) {
  45                 if ((candidate = CIRCLEQ_PREV_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL)
  46                         candidate = CIRCLEQ_LAST(&(container->clients));
  47         }
  48         else if (direction == D_DOWN) {
  49                 if ((candidate = CIRCLEQ_NEXT_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL)
  50                         candidate = CIRCLEQ_FIRST(&(container->clients));
  51         } else ELOG("Direction not implemented!\n");
  52
  53         /* If we could not switch, the container contains exactly one client. We return false */
  54         if (candidate == container->currently_focused)
  55                 return false;
  56
  57         /* Set focus */
  58         set_focus(conn, candidate, true);
  59
  60         return true;
  61 }
  62
  63 typedef enum { THING_WINDOW, THING_CONTAINER, THING_SCREEN } thing_t;
  64
  65 static void jump_to_mark(xcb_connection_t *conn, const char *mark) {
  66         Client *current;
  67         LOG("Jumping to \"%s\"\n", mark);
  68
  69         Workspace *ws;
  70         TAILQ_FOREACH(ws, workspaces, workspaces)
  71                 SLIST_FOREACH(current, &(ws->focus_stack), focus_clients) {
  72                         if (current->mark == NULL || strcmp(current->mark, mark) != 0)
  73                                 continue;
  74
  75                         workspace_show(conn, current->workspace->num + 1);
  76                         set_focus(conn, current, true);
  77                         return;
  78                 }
  79
  80         ELOG("No window with this mark found\n");
  81 }
  82
  83 static void focus_thing(xcb_connection_t *conn, direction_t direction, thing_t thing) {
  84         DLOG("focusing direction %d\n", direction);
  85
  86         int new_row = current_row,
  87             new_col = current_col;
  88         Container *container = CUR_CELL;
  89         Workspace *t_ws = c_ws;
  90
  91         /* Makes sure new_col and new_row are within bounds of the new workspace */
  92         void check_colrow_boundaries() {
  93                 if (new_col >= t_ws->cols)
  94                         new_col = (t_ws->cols - 1);
  95                 if (new_row >= t_ws->rows)
  96                         new_row = (t_ws->rows - 1);
  97         }
  98
  99         /* There always is a container. If not, current_col or current_row is wrong */
 100         assert(container != NULL);
 101
 102         if (container->workspace->fullscreen_client != NULL) {
 103                 LOG("You're in fullscreen mode. Forcing focus to operate on whole screens\n");
 104                 thing = THING_SCREEN;
 105         }
 106
 107         /* For focusing screens, situation is different: we get the rect
 108          * of the current screen, then get the screen which is on its
 109          * right/left/bottom/top and just switch to the workspace on
 110          * the target screen. */
 111         if (thing == THING_SCREEN) {
 112                 Output *cs = c_ws->output;
 113                 assert(cs != NULL);
 114                 Rect bounds = cs->rect;
 115
 116                 if (direction == D_RIGHT)
 117                         bounds.x += bounds.width;
 118                 else if (direction == D_LEFT)
 119                         bounds.x -= bounds.width;
 120                 else if (direction == D_UP)
 121                         bounds.y -= bounds.height;
 122                 else bounds.y += bounds.height;
 123
 124                 Output *target = get_screen_containing(bounds.x, bounds.y);
 125                 if (target == NULL) {
 126                         DLOG("Target output NULL\n");
 127                         /* Wrap around if the target screen is out of bounds */
 128                         if (direction == D_RIGHT)
 129                                 target = get_screen_most(D_LEFT, cs);
 130                         else if (direction == D_LEFT)
 131                                 target = get_screen_most(D_RIGHT, cs);
 132                         else if (direction == D_UP)
 133                                 target = get_screen_most(D_DOWN, cs);
 134                         else target = get_screen_most(D_UP, cs);
 135                 }
 136
 137                 DLOG("Switching to ws %d\n", target->current_workspace + 1);
 138                 workspace_show(conn, target->current_workspace->num + 1);
 139                 return;
 140         }
 141
 142         /* TODO: for horizontal default layout, this has to be expanded to LEFT/RIGHT */
 143         if (direction == D_UP || direction == D_DOWN) {
 144                 if (thing == THING_WINDOW)
 145                         /* Let’s see if we can perform up/down focus in the current container */
 146                         if (focus_window_in_container(conn, container, direction))
 147                                 return;
 148
 149                 if (direction == D_DOWN && cell_exists(t_ws, current_col, current_row+1))
 150                         new_row = current_row + t_ws->table[current_col][current_row]->rowspan;
 151                 else if (direction == D_UP && cell_exists(c_ws, current_col, current_row-1)) {
 152                         /* Set new_row as a sane default, but it may get overwritten in a second */
 153                         new_row--;
 154
 155                         /* Search from the top to correctly handle rowspanned containers */
 156                         for (int rows = 0; rows < current_row; rows += t_ws->table[current_col][rows]->rowspan) {
 157                                 if (new_row > (rows + (t_ws->table[current_col][rows]->rowspan - 1)))
 158                                         continue;
 159
 160                                 new_row = rows;
 161                                 break;
 162                         }
 163                 } else {
 164                         /* Let’s see if there is a screen down/up there to which we can switch */
 165                         DLOG("container is at %d with height %d\n", container->y, container->height);
 166                         Output *output;
 167                         int destination_y = (direction == D_UP ? (container->y - 1) : (container->y + container->height + 1));
 168                         if ((output = get_screen_containing(container->x, destination_y)) == NULL) {
 169                                 DLOG("Wrapping screen around vertically\n");
 170                                 /* No screen found? Then wrap */
 171                                 output = get_screen_most((direction == D_UP ? D_DOWN : D_UP), container->workspace->output);
 172                         }
 173                         t_ws = output->current_workspace;
 174                         new_row = (direction == D_UP ? (t_ws->rows - 1) : 0);
 175                 }
 176
 177                 check_colrow_boundaries();
 178
 179                 DLOG("new_col = %d, new_row = %d\n", new_col, new_row);
 180                 if (t_ws->table[new_col][new_row]->currently_focused == NULL) {
 181                         DLOG("Cell empty, checking for colspanned client above...\n");
 182                         for (int cols = 0; cols < new_col; cols += t_ws->table[cols][new_row]->colspan) {
 183                                 if (new_col > (cols + (t_ws->table[cols][new_row]->colspan - 1)))
 184                                         continue;
 185
 186                                 new_col = cols;
 187                                 break;
 188                         }
 189                         DLOG("Fixed it to new col %d\n", new_col);
 190                 }
 191         } else if (direction == D_LEFT || direction == D_RIGHT) {
 192                 if (direction == D_RIGHT && cell_exists(t_ws, current_col+1, current_row))
 193                         new_col = current_col + t_ws->table[current_col][current_row]->colspan;
 194                 else if (direction == D_LEFT && cell_exists(t_ws, current_col-1, current_row)) {
 195                         /* Set new_col as a sane default, but it may get overwritten in a second */
 196                         new_col--;
 197
 198                         /* Search from the left to correctly handle colspanned containers */
 199                         for (int cols = 0; cols < current_col; cols += t_ws->table[cols][current_row]->colspan) {
 200                                 if (new_col > (cols + (t_ws->table[cols][current_row]->colspan - 1)))
 201                                         continue;
 202
 203                                 new_col = cols;
 204                                 break;
 205                         }
 206                 } else {
 207                         /* Let’s see if there is a screen left/right here to which we can switch */
 208                         DLOG("container is at %d with width %d\n", container->x, container->width);
 209                         Output *output;
 210                         int destination_x = (direction == D_LEFT ? (container->x - 1) : (container->x + container->width + 1));
 211                         if ((output = get_screen_containing(destination_x, container->y)) == NULL) {
 212                                 DLOG("Wrapping screen around horizontally\n");
 213                                 output = get_screen_most((direction == D_LEFT ? D_RIGHT : D_LEFT), container->workspace->output);
 214                         }
 215                         t_ws = output->current_workspace;
 216                         new_col = (direction == D_LEFT ? (t_ws->cols - 1) : 0);
 217                 }
 218
 219                 check_colrow_boundaries();
 220
 221                 DLOG("new_col = %d, new_row = %d\n", new_col, new_row);
 222                 if (t_ws->table[new_col][new_row]->currently_focused == NULL) {
 223                         DLOG("Cell empty, checking for rowspanned client above...\n");
 224                         for (int rows = 0; rows < new_row; rows += t_ws->table[new_col][rows]->rowspan) {
 225                                 if (new_row > (rows + (t_ws->table[new_col][rows]->rowspan - 1)))
 226                                         continue;
 227
 228                                 new_row = rows;
 229                                 break;
 230                         }
 231                         DLOG("Fixed it to new row %d\n", new_row);
 232                 }
 233         } else {
 234                 ELOG("direction unhandled\n");
 235                 return;
 236         }
 237
 238         check_colrow_boundaries();
 239
 240         if (t_ws->table[new_col][new_row]->currently_focused != NULL)
 241                 set_focus(conn, t_ws->table[new_col][new_row]->currently_focused, true);
 242 }
 243
 244 /*
 245  * Tries to move the window inside its current container.
 246  *
 247  * Returns true if the window could be moved, false otherwise.
 248  *
 249  */
 250 static bool move_current_window_in_container(xcb_connection_t *conn, Client *client,
 251                 direction_t direction) {
 252         assert(client->container != NULL);
 253
 254         Client *other = (direction == D_UP ? CIRCLEQ_PREV(client, clients) :
 255                                              CIRCLEQ_NEXT(client, clients));
 256
 257         if (other == CIRCLEQ_END(&(client->container->clients)))
 258                 return false;
 259
 260         DLOG("i can do that\n");
 261         /* We can move the client inside its current container */
 262         CIRCLEQ_REMOVE(&(client->container->clients), client, clients);
 263         if (direction == D_UP)
 264                 CIRCLEQ_INSERT_BEFORE(&(client->container->clients), other, client, clients);
 265         else CIRCLEQ_INSERT_AFTER(&(client->container->clients), other, client, clients);
 266         render_layout(conn);
 267         return true;
 268 }
 269
 270 /*
 271  * Moves the current window or whole container to the given direction, creating a column/row if
 272  * necessary.
 273  *
 274  */
 275 static void move_current_window(xcb_connection_t *conn, direction_t direction) {
 276         LOG("moving window to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" :
 277                                             (direction == D_LEFT ? "left" : "right"))));
 278         /* Get current window */
 279         Container *container = CUR_CELL,
 280                   *new = NULL;
 281
 282         /* There has to be a container, see focus_window() */
 283         assert(container != NULL);
 284
 285         /* If there is no window or the dock window is focused, we’re done */
 286         if (container->currently_focused == NULL ||
 287             container->currently_focused->dock)
 288                 return;
 289
 290         /* As soon as the client is moved away, the last focused client in the old
 291          * container needs to get focus, if any. Therefore, we save it here. */
 292         Client *current_client = container->currently_focused;
 293         Client *to_focus = get_last_focused_client(conn, container, current_client);
 294
 295         if (to_focus == NULL) {
 296                 to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients);
 297                 if (to_focus == NULL)
 298                         to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients);
 299         }
 300
 301         switch (direction) {
 302                 case D_LEFT:
 303                         /* If we’re at the left-most position, move the rest of the table right */
 304                         if (current_col == 0) {
 305                                 expand_table_cols_at_head(c_ws);
 306                                 new = CUR_CELL;
 307                         } else
 308                                 new = CUR_TABLE[--current_col][current_row];
 309                         break;
 310                 case D_RIGHT:
 311                         if (current_col == (c_ws->cols-1))
 312                                 expand_table_cols(c_ws);
 313
 314                         new = CUR_TABLE[++current_col][current_row];
 315                         break;
 316                 case D_UP:
 317                         if (move_current_window_in_container(conn, current_client, D_UP))
 318                                 return;
 319
 320                         /* if we’re at the up-most position, move the rest of the table down */
 321                         if (current_row == 0) {
 322                                 expand_table_rows_at_head(c_ws);
 323                                 new = CUR_CELL;
 324                         } else
 325                                 new = CUR_TABLE[current_col][--current_row];
 326                         break;
 327                 case D_DOWN:
 328                         if (move_current_window_in_container(conn, current_client, D_DOWN))
 329                                 return;
 330
 331                         if (current_row == (c_ws->rows-1))
 332                                 expand_table_rows(c_ws);
 333
 334                         new = CUR_TABLE[current_col][++current_row];
 335                         break;
 336                 /* To make static analyzers happy: */
 337                 default:
 338                         return;
 339         }
 340
 341         /* Remove it from the old container and put it into the new one */
 342         client_remove_from_container(conn, current_client, container, true);
 343
 344         if (new->currently_focused != NULL)
 345                 CIRCLEQ_INSERT_AFTER(&(new->clients), new->currently_focused, current_client, clients);
 346         else CIRCLEQ_INSERT_TAIL(&(new->clients), current_client, clients);
 347         SLIST_INSERT_HEAD(&(new->workspace->focus_stack), current_client, focus_clients);
 348
 349         /* Update data structures */
 350         current_client->container = new;
 351         current_client->workspace = new->workspace;
 352         container->currently_focused = to_focus;
 353         new->currently_focused = current_client;
 354
 355         Workspace *workspace = container->workspace;
 356
 357         /* delete all empty columns/rows */
 358         cleanup_table(conn, workspace);
 359
 360         /* Fix colspan/rowspan if it’d overlap */
 361         fix_colrowspan(conn, workspace);
 362
 363         render_workspace(conn, workspace->output, workspace);
 364         xcb_flush(conn);
 365
 366         set_focus(conn, current_client, true);
 367 }
 368
 369 static void move_current_container(xcb_connection_t *conn, direction_t direction) {
 370         LOG("moving container to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" :
 371                                             (direction == D_LEFT ? "left" : "right"))));
 372         /* Get current window */
 373         Container *container = CUR_CELL,
 374                   *new = NULL;
 375
 376         Container **old = &CUR_CELL;
 377
 378         /* There has to be a container, see focus_window() */
 379         assert(container != NULL);
 380
 381         switch (direction) {
 382                 case D_LEFT:
 383                         /* If we’re at the left-most position, move the rest of the table right */
 384                         if (current_col == 0) {
 385                                 expand_table_cols_at_head(c_ws);
 386                                 new = CUR_CELL;
 387                                 old = &CUR_TABLE[current_col+1][current_row];
 388                         } else
 389                                 new = CUR_TABLE[--current_col][current_row];
 390                         break;
 391                 case D_RIGHT:
 392                         if (current_col == (c_ws->cols-1))
 393                                 expand_table_cols(c_ws);
 394
 395                         new = CUR_TABLE[++current_col][current_row];
 396                         break;
 397                 case D_UP:
 398                         /* if we’re at the up-most position, move the rest of the table down */
 399                         if (current_row == 0) {
 400                                 expand_table_rows_at_head(c_ws);
 401                                 new = CUR_CELL;
 402                                 old = &CUR_TABLE[current_col][current_row+1];
 403                         } else
 404                                 new = CUR_TABLE[current_col][--current_row];
 405                         break;
 406                 case D_DOWN:
 407                         if (current_row == (c_ws->rows-1))
 408                                 expand_table_rows(c_ws);
 409
 410                         new = CUR_TABLE[current_col][++current_row];
 411                         break;
 412                 /* To make static analyzers happy: */
 413                 default:
 414                         return;
 415         }
 416
 417         DLOG("old = %d,%d and new = %d,%d\n", container->col, container->row, new->col, new->row);
 418
 419         /* Swap the containers */
 420         int col = new->col;
 421         int row = new->row;
 422
 423         *old = new;
 424         new->col = container->col;
 425         new->row = container->row;
 426
 427         CUR_CELL = container;
 428         container->col = col;
 429         container->row = row;
 430
 431         Workspace *workspace = container->workspace;
 432
 433         /* delete all empty columns/rows */
 434         cleanup_table(conn, workspace);
 435
 436         /* Fix colspan/rowspan if it’d overlap */
 437         fix_colrowspan(conn, workspace);
 438
 439         render_layout(conn);
 440 }
 441
 442 /*
 443  * "Snaps" the current container (not possible for windows, because it works at table base)
 444  * to the given direction, that is, adjusts cellspan/rowspan
 445  *
 446  */
 447 static void snap_current_container(xcb_connection_t *conn, direction_t direction) {
 448         LOG("snapping container to direction %d\n", direction);
 449
 450         Container *container = CUR_CELL;
 451
 452         assert(container != NULL);
 453
 454         switch (direction) {
 455                 case D_LEFT:
 456                         /* Snap to the left is actually a move to the left and then a snap right */
 457                         if (!cell_exists(container->workspace, container->col - 1, container->row) ||
 458                             CUR_TABLE[container->col-1][container->row]->currently_focused != NULL) {
 459                                 ELOG("cannot snap to left - the cell is already used\n");
 460                                 return;
 461                         }
 462
 463                         move_current_window(conn, D_LEFT);
 464                         snap_current_container(conn, D_RIGHT);
 465                         return;
 466                 case D_RIGHT: {
 467                         /* Check if the cell is used */
 468                         int new_col = container->col + container->colspan;
 469                         for (int i = 0; i < container->rowspan; i++)
 470                                 if (!cell_exists(container->workspace, new_col, container->row + i) ||
 471                                     CUR_TABLE[new_col][container->row + i]->currently_focused != NULL) {
 472                                         ELOG("cannot snap to right - the cell is already used\n");
 473                                         return;
 474                                 }
 475
 476                         /* Check if there are other cells with rowspan, which are in our way.
 477                          * If so, reduce their rowspan. */
 478                         for (int i = container->row-1; i >= 0; i--) {
 479                                 DLOG("we got cell %d, %d with rowspan %d\n",
 480                                                 new_col, i, CUR_TABLE[new_col][i]->rowspan);
 481                                 while ((CUR_TABLE[new_col][i]->rowspan-1) >= (container->row - i))
 482                                         CUR_TABLE[new_col][i]->rowspan--;
 483                                 DLOG("new rowspan = %d\n", CUR_TABLE[new_col][i]->rowspan);
 484                         }
 485
 486                         container->colspan++;
 487                         break;
 488                 }
 489                 case D_UP:
 490                         if (!cell_exists(container->workspace, container->col, container->row - 1) ||
 491                             CUR_TABLE[container->col][container->row-1]->currently_focused != NULL) {
 492                                 ELOG("cannot snap to top - the cell is already used\n");
 493                                 return;
 494                         }
 495
 496                         move_current_window(conn, D_UP);
 497                         snap_current_container(conn, D_DOWN);
 498                         return;
 499                 case D_DOWN: {
 500                         DLOG("snapping down\n");
 501                         int new_row = container->row + container->rowspan;
 502                         for (int i = 0; i < container->colspan; i++)
 503                                 if (!cell_exists(container->workspace, container->col + i, new_row) ||
 504                                     CUR_TABLE[container->col + i][new_row]->currently_focused != NULL) {
 505                                         ELOG("cannot snap down - the cell is already used\n");
 506                                         return;
 507                                 }
 508
 509                         for (int i = container->col-1; i >= 0; i--) {
 510                                 DLOG("we got cell %d, %d with colspan %d\n",
 511                                                 i, new_row, CUR_TABLE[i][new_row]->colspan);
 512                                 while ((CUR_TABLE[i][new_row]->colspan-1) >= (container->col - i))
 513                                         CUR_TABLE[i][new_row]->colspan--;
 514                                 DLOG("new colspan = %d\n", CUR_TABLE[i][new_row]->colspan);
 515
 516                         }
 517
 518                         container->rowspan++;
 519                         break;
 520                 }
 521                 /* To make static analyzers happy: */
 522                 default:
 523                         return;
 524         }
 525
 526         render_layout(conn);
 527 }
 528
 529 static void move_floating_window_to_workspace(xcb_connection_t *conn, Client *client, int workspace) {
 530         /* t_ws (to workspace) is just a container pointer to the workspace we’re switching to */
 531         Workspace *t_ws = workspace_get(workspace-1),
 532                   *old_ws = client->workspace;
 533
 534         LOG("moving floating\n");
 535
 536         workspace_initialize(t_ws, c_ws->output, false);
 537
 538         /* Check if there is already a fullscreen client on the destination workspace and
 539          * stop moving if so. */
 540         if (client->fullscreen && (t_ws->fullscreen_client != NULL)) {
 541                 ELOG("Not moving: Fullscreen client already existing on destination workspace.\n");
 542                 return;
 543         }
 544
 545         floating_assign_to_workspace(client, t_ws);
 546
 547         /* If we’re moving it to an invisible screen, we need to unmap it */
 548         if (!workspace_is_visible(t_ws)) {
 549                 DLOG("This workspace is not visible, unmapping\n");
 550                 client_unmap(conn, client);
 551         } else {
 552                 /* If this is not the case, we move the window to a workspace
 553                  * which is on another screen, so we also need to adjust its
 554                  * coordinates. */
 555                 DLOG("before x = %d, y = %d\n", client->rect.x, client->rect.y);
 556                 uint32_t relative_x = client->rect.x - old_ws->rect.x,
 557                          relative_y = client->rect.y - old_ws->rect.y;
 558                 DLOG("rel_x = %d, rel_y = %d\n", relative_x, relative_y);
 559                 client->rect.x = t_ws->rect.x + relative_x;
 560                 client->rect.y = t_ws->rect.y + relative_y;
 561                 DLOG("after x = %d, y = %d\n", client->rect.x, client->rect.y);
 562                 reposition_client(conn, client);
 563                 xcb_flush(conn);
 564         }
 565
 566         DLOG("done\n");
 567
 568         render_layout(conn);
 569
 570         if (workspace_is_visible(t_ws))
 571                 set_focus(conn, client, true);
 572 }
 573
 574 /*
 575  * Moves the currently selected window to the given workspace
 576  *
 577  */
 578 static void move_current_window_to_workspace(xcb_connection_t *conn, int workspace) {
 579         LOG("Moving current window to workspace %d\n", workspace);
 580
 581         Container *container = CUR_CELL;
 582
 583         assert(container != NULL);
 584
 585         /* t_ws (to workspace) is just a container pointer to the workspace we’re switching to */
 586         Workspace *t_ws = workspace_get(workspace-1);
 587
 588         Client *current_client = container->currently_focused;
 589         if (current_client == NULL) {
 590                 ELOG("No currently focused client in current container.\n");
 591                 return;
 592         }
 593         Client *to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients);
 594         if (to_focus == NULL)
 595                 to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients);
 596
 597         workspace_initialize(t_ws, container->workspace->output, false);
 598         /* Check if there is already a fullscreen client on the destination workspace and
 599          * stop moving if so. */
 600         if (current_client->fullscreen && (t_ws->fullscreen_client != NULL)) {
 601                 ELOG("Not moving: Fullscreen client already existing on destination workspace.\n");
 602                 return;
 603         }
 604
 605         Container *to_container = t_ws->table[t_ws->current_col][t_ws->current_row];
 606
 607         assert(to_container != NULL);
 608
 609         client_remove_from_container(conn, current_client, container, true);
 610         if (container->workspace->fullscreen_client == current_client)
 611                 container->workspace->fullscreen_client = NULL;
 612
 613         /* TODO: insert it to the correct position */
 614         CIRCLEQ_INSERT_TAIL(&(to_container->clients), current_client, clients);
 615
 616         SLIST_INSERT_HEAD(&(to_container->workspace->focus_stack), current_client, focus_clients);
 617         DLOG("Moved.\n");
 618
 619         current_client->container = to_container;
 620         current_client->workspace = to_container->workspace;
 621         container->currently_focused = to_focus;
 622         to_container->currently_focused = current_client;
 623
 624         /* If we’re moving it to an invisible screen, we need to unmap it */
 625         if (!workspace_is_visible(to_container->workspace)) {
 626                 DLOG("This workspace is not visible, unmapping\n");
 627                 client_unmap(conn, current_client);
 628         } else {
 629                 if (current_client->fullscreen) {
 630                         DLOG("Calling client_enter_fullscreen again\n");
 631                         client_enter_fullscreen(conn, current_client);
 632                 }
 633         }
 634
 635         /* delete all empty columns/rows */
 636         cleanup_table(conn, container->workspace);
 637
 638         render_layout(conn);
 639
 640         if (workspace_is_visible(to_container->workspace)) {
 641                 client_warp_pointer_into(conn, current_client);
 642                 set_focus(conn, current_client, true);
 643         }
 644 }
 645
 646 /*
 647  * Jumps to the given window class / title.
 648  * Title is matched using strstr, that is, matches if it appears anywhere
 649  * in the string. Regular expressions seem to be a bit overkill here. However,
 650  * if we need them for something else somewhen, we may introduce them here, too.
 651  *
 652  */
 653 static void jump_to_window(xcb_connection_t *conn, const char *arguments) {
 654         char *classtitle;
 655         Client *client;
 656
 657         /* The first character is a quote, this was checked before */
 658         classtitle = sstrdup(arguments+1);
 659         /* The last character is a quote, we just set it to NULL */
 660         classtitle[strlen(classtitle)-1] = '\0';
 661
 662         if ((client = get_matching_client(conn, classtitle, NULL)) == NULL) {
 663                 free(classtitle);
 664                 ELOG("No matching client found.\n");
 665                 return;
 666         }
 667
 668         free(classtitle);
 669         set_focus(conn, client, true);
 670 }
 671
 672 /*
 673  * Jump directly to the specified workspace, row and col.
 674  * Great for reaching windows that you always keep in the same spot (hello irssi, I'm looking at you)
 675  *
 676  */
 677 static void jump_to_container(xcb_connection_t *conn, const char *arguments) {
 678         int ws, row, col;
 679         int result;
 680
 681         result = sscanf(arguments, "%d %d %d", &ws, &col, &row);
 682         LOG("Jump called with %d parameters (\"%s\")\n", result, arguments);
 683
 684         /* No match? Either no arguments were specified, or no numbers */
 685         if (result < 1) {
 686                 ELOG("At least one valid argument required\n");
 687                 return;
 688         }
 689
 690         /* Move to the target workspace */
 691         workspace_show(conn, ws);
 692
 693         if (result < 3)
 694                 return;
 695
 696         DLOG("Boundary-checking col %d, row %d... (max cols %d, max rows %d)\n", col, row, c_ws->cols, c_ws->rows);
 697
 698         /* Move to row/col */
 699         if (row >= c_ws->rows)
 700                 row = c_ws->rows - 1;
 701         if (col >= c_ws->cols)
 702                 col = c_ws->cols - 1;
 703
 704         DLOG("Jumping to col %d, row %d\n", col, row);
 705         if (c_ws->table[col][row]->currently_focused != NULL)
 706                 set_focus(conn, c_ws->table[col][row]->currently_focused, true);
 707 }
 708
 709 /*
 710  * Travels the focus stack by the given number of times (or once, if no argument
 711  * was specified). That is, selects the window you were in before you focused
 712  * the current window.
 713  *
 714  * The special values 'floating' (select the next floating window), 'tiling'
 715  * (select the next tiling window), 'ft' (if the current window is floating,
 716  * select the next tiling window and vice-versa) are also valid
 717  *
 718  */
 719 static void travel_focus_stack(xcb_connection_t *conn, const char *arguments) {
 720         /* Start count at -1 to always skip the first element */
 721         int times, count = -1;
 722         Client *current;
 723         bool floating_criteria;
 724
 725         /* Either it’s one of the special values… */
 726         if (strcasecmp(arguments, "floating") == 0) {
 727                 floating_criteria = true;
 728         } else if (strcasecmp(arguments, "tiling") == 0) {
 729                 floating_criteria = false;
 730         } else if (strcasecmp(arguments, "ft") == 0) {
 731                 Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
 732                 if (last_focused == SLIST_END(&(c_ws->focus_stack))) {
 733                         ELOG("Cannot select the next floating/tiling client because there is no client at all\n");
 734                         return;
 735                 }
 736
 737                 floating_criteria = !client_is_floating(last_focused);
 738         } else {
 739                 /* …or a number was specified */
 740                 if (sscanf(arguments, "%u", &times) != 1) {
 741                         ELOG("No or invalid argument given (\"%s\"), using default of 1 times\n", arguments);
 742                         times = 1;
 743                 }
 744
 745                 SLIST_FOREACH(current, &(CUR_CELL->workspace->focus_stack), focus_clients) {
 746                         if (++count < times) {
 747                                 DLOG("Skipping\n");
 748                                 continue;
 749                         }
 750
 751                         DLOG("Focussing\n");
 752                         set_focus(conn, current, true);
 753                         break;
 754                 }
 755                 return;
 756         }
 757
 758         /* Select the next client matching the criteria parsed above */
 759         SLIST_FOREACH(current, &(CUR_CELL->workspace->focus_stack), focus_clients)
 760                 if (client_is_floating(current) == floating_criteria) {
 761                         set_focus(conn, current, true);
 762                         break;
 763                 }
 764 }
 765
 766 /*
 767  * Switch to next or previous existing workspace
 768  *
 769  */
 770 static void next_previous_workspace(xcb_connection_t *conn, int direction) {
 771         Workspace *ws = c_ws;
 772
 773         if (direction == 'n') {
 774                 while (1) {
 775                         ws = TAILQ_NEXT(ws, workspaces);
 776
 777                         if (ws == TAILQ_END(workspaces))
 778                                 ws = TAILQ_FIRST(workspaces);
 779
 780                         if (ws == c_ws)
 781                                 return;
 782
 783                         if (ws->output == NULL)
 784                                 continue;
 785
 786                         workspace_show(conn, ws->num + 1);
 787                         return;
 788                 }
 789         } else if (direction == 'p') {
 790                 while (1) {
 791                         ws = TAILQ_PREV(ws, workspaces_head, workspaces);
 792
 793                         if (ws == TAILQ_END(workspaces))
 794                                 ws = TAILQ_LAST(workspaces, workspaces_head);
 795
 796                         if (ws == c_ws)
 797                                 return;
 798
 799                         if (ws->output == NULL)
 800                                 continue;
 801
 802                         workspace_show(conn, ws->num + 1);
 803                         return;
 804                 }
 805         }
 806 }
 807
 808 static void parse_resize_command(xcb_connection_t *conn, Client *last_focused, const char *command) {
 809         int first, second;
 810         resize_orientation_t orientation = O_VERTICAL;
 811         Container *con = last_focused->container;
 812         Workspace *ws = last_focused->workspace;
 813
 814         if (client_is_floating(last_focused)) {
 815                 DLOG("Resizing a floating client\n");
 816                 if (STARTS_WITH(command, "left")) {
 817                         command += strlen("left");
 818                         last_focused->rect.width += atoi(command);
 819                         last_focused->rect.x -= atoi(command);
 820                 } else if (STARTS_WITH(command, "right")) {
 821                         command += strlen("right");
 822                         last_focused->rect.width += atoi(command);
 823                 } else if (STARTS_WITH(command, "top")) {
 824                         command += strlen("top");
 825                         last_focused->rect.height += atoi(command);
 826                         last_focused->rect.y -= atoi(command);
 827                 } else if (STARTS_WITH(command, "bottom")) {
 828                         command += strlen("bottom");
 829                         last_focused->rect.height += atoi(command);
 830                 } else {
 831                         ELOG("Syntax: resize <left|right|top|bottom> [+|-]<pixels>\n");
 832                         return;
 833                 }
 834
 835                 /* resize_client flushes */
 836                 resize_client(conn, last_focused);
 837
 838                 return;
 839         }
 840
 841         if (STARTS_WITH(command, "left")) {
 842                 if (con->col == 0)
 843                         return;
 844                 first = con->col - 1;
 845                 second = con->col;
 846                 command += strlen("left");
 847         } else if (STARTS_WITH(command, "right")) {
 848                 first = con->col + (con->colspan - 1);
 849                 DLOG("column %d\n", first);
 850
 851                 if (!cell_exists(ws, first, con->row) ||
 852                     (first == (ws->cols-1)))
 853                         return;
 854
 855                 second = first + 1;
 856                 command += strlen("right");
 857         } else if (STARTS_WITH(command, "top")) {
 858                 if (con->row == 0)
 859                         return;
 860                 first = con->row - 1;
 861                 second = con->row;
 862                 orientation = O_HORIZONTAL;
 863                 command += strlen("top");
 864         } else if (STARTS_WITH(command, "bottom")) {
 865                 first = con->row + (con->rowspan - 1);
 866                 if (!cell_exists(ws, con->col, first) ||
 867                     (first == (ws->rows-1)))
 868                         return;
 869
 870                 second = first + 1;
 871                 orientation = O_HORIZONTAL;
 872                 command += strlen("bottom");
 873         } else {
 874                 ELOG("Syntax: resize <left|right|top|bottom> [+|-]<pixels>\n");
 875                 return;
 876         }
 877
 878         int pixels = atoi(command);
 879         if (pixels == 0)
 880                 return;
 881
 882         resize_container(conn, ws, first, second, orientation, pixels);
 883 }
 884
 885 /*
 886  * Parses a command, see file CMDMODE for more information
 887  *
 888  */
 889 void parse_command(xcb_connection_t *conn, const char *command) {
 890         LOG("--- parsing command \"%s\" ---\n", command);
 891         /* Get the first client from focus stack because floating clients are not
 892          * in any container, therefore CUR_CELL is not appropriate. */
 893         Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
 894         if (last_focused == SLIST_END(&(c_ws->focus_stack)))
 895                 last_focused = NULL;
 896
 897         /* Hmm, just to be sure */
 898         if (command[0] == '\0')
 899                 return;
 900
 901         /* Is it an <exec>? Then execute the given command. */
 902         if (STARTS_WITH(command, "exec ")) {
 903                 LOG("starting \"%s\"\n", command + strlen("exec "));
 904                 start_application(command+strlen("exec "));
 905                 return;
 906         }
 907
 908         if (STARTS_WITH(command, "mark")) {
 909                 if (last_focused == NULL) {
 910                         ELOG("There is no window to mark\n");
 911                         return;
 912                 }
 913                 const char *rest = command + strlen("mark");
 914                 while (*rest == ' ')
 915                         rest++;
 916                 if (*rest == '\0') {
 917                         DLOG("interactive mark starting\n");
 918                         start_application("i3-input -p 'mark ' -l 1 -P 'Mark: '");
 919                 } else {
 920                         LOG("mark with \"%s\"\n", rest);
 921                         client_mark(conn, last_focused, rest);
 922                 }
 923                 return;
 924         }
 925
 926         if (STARTS_WITH(command, "goto")) {
 927                 const char *rest = command + strlen("goto");
 928                 while (*rest == ' ')
 929                         rest++;
 930                 if (*rest == '\0') {
 931                         DLOG("interactive go to mark starting\n");
 932                         start_application("i3-input -p 'goto ' -l 1 -P 'Goto: '");
 933                 } else {
 934                         LOG("go to \"%s\"\n", rest);
 935                         jump_to_mark(conn, rest);
 936                 }
 937                 return;
 938         }
 939
 940         if (STARTS_WITH(command, "stack-limit ")) {
 941                 if (last_focused == NULL || client_is_floating(last_focused)) {
 942                         ELOG("No container focused\n");
 943                         return;
 944                 }
 945                 const char *rest = command + strlen("stack-limit ");
 946                 if (strncmp(rest, "rows ", strlen("rows ")) == 0) {
 947                         last_focused->container->stack_limit = STACK_LIMIT_ROWS;
 948                         rest += strlen("rows ");
 949                 } else if (strncmp(rest, "cols ", strlen("cols ")) == 0) {
 950                         last_focused->container->stack_limit = STACK_LIMIT_COLS;
 951                         rest += strlen("cols ");
 952                 } else {
 953                         ELOG("Syntax: stack-limit <cols|rows> <limit>\n");
 954                         return;
 955                 }
 956
 957                 last_focused->container->stack_limit_value = atoi(rest);
 958                 if (last_focused->container->stack_limit_value == 0)
 959                         last_focused->container->stack_limit = STACK_LIMIT_NONE;
 960
 961                 return;
 962         }
 963
 964         if (STARTS_WITH(command, "resize ")) {
 965                 if (last_focused == NULL)
 966                         return;
 967                 const char *rest = command + strlen("resize ");
 968                 parse_resize_command(conn, last_focused, rest);
 969                 return;
 970         }
 971
 972         if (STARTS_WITH(command, "mode ")) {
 973                 const char *rest = command + strlen("mode ");
 974                 switch_mode(conn, rest);
 975                 return;
 976         }
 977
 978         /* Is it an <exit>? */
 979         if (STARTS_WITH(command, "exit")) {
 980                 LOG("User issued exit-command, exiting without error.\n");
 981                 restore_geometry(global_conn);
 982                 exit(EXIT_SUCCESS);
 983         }
 984
 985         /* Is it a <reload>? */
 986         if (STARTS_WITH(command, "reload")) {
 987                 load_configuration(conn, NULL, true);
 988                 return;
 989         }
 990
 991         /* Is it <restart>? Then restart in place. */
 992         if (STARTS_WITH(command, "restart")) {
 993                 i3_restart();
 994         }
 995
 996         if (STARTS_WITH(command, "kill")) {
 997                 if (last_focused == NULL) {
 998                         ELOG("There is no window to kill\n");
 999                         return;
1000                 }
1001
1002                 LOG("Killing current window\n");
1003                 client_kill(conn, last_focused);
1004                 return;
1005         }
1006
1007         /* Is it a jump to a specified workspace, row, col? */
1008         if (STARTS_WITH(command, "jump ")) {
1009                 const char *arguments = command + strlen("jump ");
1010                 if (arguments[0] == '"')
1011                         jump_to_window(conn, arguments);
1012                 else jump_to_container(conn, arguments);
1013                 return;
1014         }
1015
1016         /* Should we travel the focus stack? */
1017         if (STARTS_WITH(command, "focus")) {
1018                 const char *arguments = command + strlen("focus ");
1019                 travel_focus_stack(conn, arguments);
1020                 return;
1021         }
1022
1023         /* Is it 'f' for fullscreen? */
1024         if (command[0] == 'f') {
1025                 if (last_focused == NULL)
1026                         return;
1027                 client_toggle_fullscreen(conn, last_focused);
1028                 return;
1029         }
1030
1031         /* Is it just 's' for stacking or 'd' for default? */
1032         if ((command[0] == 's' || command[0] == 'd' || command[0] == 'T') && (command[1] == '\0')) {
1033                 if (last_focused != NULL && client_is_floating(last_focused)) {
1034                         ELOG("not switching, this is a floating client\n");
1035                         return;
1036                 }
1037                 LOG("Switching mode for current container\n");
1038                 int new_mode = MODE_DEFAULT;
1039                 if (command[0] == 's')
1040                         new_mode = MODE_STACK;
1041                 if (command[0] == 'T')
1042                         new_mode = MODE_TABBED;
1043                 switch_layout_mode(conn, CUR_CELL, new_mode);
1044                 return;
1045         }
1046
1047         /* Is it 'bn' (border normal), 'bp' (border 1pixel) or 'bb' (border borderless)? */
1048         /* or even 'bt' (toggle border: 'bp' -> 'bb' -> 'bn' ) */
1049         if (command[0] == 'b') {
1050                 if (last_focused == NULL) {
1051                         ELOG("No window focused, cannot change border type\n");
1052                         return;
1053                 }
1054
1055                 char com = command[1];
1056                 if (command[1] == 't') {
1057                         if (last_focused->titlebar_position == TITLEBAR_TOP &&
1058                             !last_focused->borderless)
1059                             com = 'p';
1060                         else if (last_focused->titlebar_position == TITLEBAR_OFF &&
1061                                  !last_focused->borderless)
1062                             com = 'b';
1063                         else com = 'n';
1064                 }
1065
1066                 client_change_border(conn, last_focused, com);
1067                 return;
1068         }
1069
1070         if (command[0] == 'H') {
1071                 LOG("Hiding all floating windows\n");
1072                 floating_toggle_hide(conn, c_ws);
1073                 return;
1074         }
1075
1076         enum { WITH_WINDOW, WITH_CONTAINER, WITH_WORKSPACE, WITH_SCREEN } with = WITH_WINDOW;
1077
1078         /* Is it a <with>? */
1079         if (command[0] == 'w') {
1080                 command++;
1081                 /* TODO: implement */
1082                 if (command[0] == 'c') {
1083                         with = WITH_CONTAINER;
1084                         command++;
1085                 } else if (command[0] == 'w') {
1086                         with = WITH_WORKSPACE;
1087                         command++;
1088                 } else if (command[0] == 's') {
1089                         with = WITH_SCREEN;
1090                         command++;
1091                 } else {
1092                         ELOG("not yet implemented.\n");
1093                         return;
1094                 }
1095         }
1096
1097         /* Is it 't' for toggle tiling/floating? */
1098         if (command[0] == 't') {
1099                 if (with == WITH_WORKSPACE) {
1100                         c_ws->auto_float = !c_ws->auto_float;
1101                         LOG("autofloat is now %d\n", c_ws->auto_float);
1102                         return;
1103                 }
1104                 if (last_focused == NULL) {
1105                         ELOG("Cannot toggle tiling/floating: workspace empty\n");
1106                         return;
1107                 }
1108
1109                 Workspace *ws = last_focused->workspace;
1110
1111                 toggle_floating_mode(conn, last_focused, false);
1112                 /* delete all empty columns/rows */
1113                 cleanup_table(conn, ws);
1114
1115                 /* Fix colspan/rowspan if it’d overlap */
1116                 fix_colrowspan(conn, ws);
1117
1118                 render_workspace(conn, ws->output, ws);
1119
1120                 /* Re-focus the client because cleanup_table sets the focus to the last
1121                  * focused client inside a container only. */
1122                 set_focus(conn, last_focused, true);
1123
1124                 return;
1125         }
1126
1127         /* Is it 'n' or 'p' for next/previous workspace? (nw) */
1128         if ((command[0] == 'n' || command[0] == 'p') && command[1] == 'w') {
1129                next_previous_workspace(conn, command[0]);
1130                return;
1131         }
1132
1133         /* It’s a normal <cmd> */
1134         char *rest = NULL;
1135         enum { ACTION_FOCUS, ACTION_MOVE, ACTION_SNAP } action = ACTION_FOCUS;
1136         direction_t direction;
1137         int times = strtol(command, &rest, 10);
1138         if (rest == NULL) {
1139                 ELOG("Invalid command (\"%s\")\n", command);
1140                 return;
1141         }
1142
1143         if (*rest == '\0') {
1144                 /* No rest? This was a workspace number, not a times specification */
1145                 workspace_show(conn, times);
1146                 return;
1147         }
1148
1149         if (*rest == 'm' || *rest == 's') {
1150                 action = (*rest == 'm' ? ACTION_MOVE : ACTION_SNAP);
1151                 rest++;
1152         }
1153
1154         int workspace = strtol(rest, &rest, 10);
1155
1156         if (rest == NULL) {
1157                 ELOG("Invalid command (\"%s\")\n", command);
1158                 return;
1159         }
1160
1161         if (*rest == '\0') {
1162                 if (last_focused != NULL && client_is_floating(last_focused))
1163                         move_floating_window_to_workspace(conn, last_focused, workspace);
1164                 else move_current_window_to_workspace(conn, workspace);
1165                 return;
1166         }
1167
1168         if (last_focused == NULL) {
1169                 ELOG("Not performing (no window found)\n");
1170                 return;
1171         }
1172
1173         if (client_is_floating(last_focused) &&
1174             (action != ACTION_FOCUS && action != ACTION_MOVE)) {
1175                 ELOG("Not performing (floating)\n");
1176                 return;
1177         }
1178
1179         /* Now perform action to <where> */
1180         while (*rest != '\0') {
1181                 if (*rest == 'h')
1182                         direction = D_LEFT;
1183                 else if (*rest == 'j')
1184                         direction = D_DOWN;
1185                 else if (*rest == 'k')
1186                         direction = D_UP;
1187                 else if (*rest == 'l')
1188                         direction = D_RIGHT;
1189                 else {
1190                         ELOG("unknown direction: %c\n", *rest);
1191                         return;
1192                 }
1193                 rest++;
1194
1195                 if (action == ACTION_FOCUS) {
1196                         if (with == WITH_SCREEN) {
1197                                 focus_thing(conn, direction, THING_SCREEN);
1198                                 continue;
1199                         }
1200                         if (client_is_floating(last_focused)) {
1201                                 floating_focus_direction(conn, last_focused, direction);
1202                                 continue;
1203                         }
1204                         focus_thing(conn, direction, (with == WITH_WINDOW ? THING_WINDOW : THING_CONTAINER));
1205                         continue;
1206                 }
1207
1208                 if (action == ACTION_MOVE) {
1209                         if (with == WITH_SCREEN) {
1210                                 /* TODO: this should swap the screen’s contents
1211                                  * (e.g. all workspaces) with the next/previous/…
1212                                  * screen */
1213                                 ELOG("Not yet implemented\n");
1214                                 continue;
1215                         }
1216                         if (client_is_floating(last_focused)) {
1217                                 floating_move(conn, last_focused, direction);
1218                                 continue;
1219                         }
1220                         if (with == WITH_WINDOW)
1221                                 move_current_window(conn, direction);
1222                         else move_current_container(conn, direction);
1223                         continue;
1224                 }
1225
1226                 if (action == ACTION_SNAP) {
1227                         if (with == WITH_SCREEN) {
1228                                 ELOG("You cannot snap a screen (it makes no sense).\n");
1229                                 continue;
1230                         }
1231                         snap_current_container(conn, direction);
1232                         continue;
1233                 }
1234         }
1235 }