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 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 "xinerama.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
  36 bool focus_window_in_container(xcb_connection_t *conn, Container *container, direction_t direction) {
  37         /* If this container is empty, we’re done */
  38         if (container->currently_focused == NULL)
  39                 return false;
  40
  41         /* Get the previous/next client or wrap around */
  42         Client *candidate = NULL;
  43         if (direction == D_UP) {
  44                 if ((candidate = CIRCLEQ_PREV_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL)
  45                         candidate = CIRCLEQ_LAST(&(container->clients));
  46         }
  47         else if (direction == D_DOWN) {
  48                 if ((candidate = CIRCLEQ_NEXT_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL)
  49                         candidate = CIRCLEQ_FIRST(&(container->clients));
  50         } else ELOG("Direction not implemented!\n");
  51
  52         /* If we could not switch, the container contains exactly one client. We return false */
  53         if (candidate == container->currently_focused)
  54                 return false;
  55
  56         /* Set focus */
  57         set_focus(conn, candidate, true);
  58
  59         return true;
  60 }
  61
  62 typedef enum { THING_WINDOW, THING_CONTAINER, THING_SCREEN } thing_t;
  63
  64 static void jump_to_mark(xcb_connection_t *conn, const char *mark) {
  65         Client *current;
  66         LOG("Jumping to \"%s\"\n", mark);
  67
  68         Workspace *ws;
  69         TAILQ_FOREACH(ws, workspaces, workspaces)
  70                 SLIST_FOREACH(current, &(ws->focus_stack), focus_clients) {
  71                         if (current->mark == NULL || strcmp(current->mark, mark) != 0)
  72                                 continue;
  73
  74                         workspace_show(conn, current->workspace->num + 1);
  75                         set_focus(conn, current, true);
  76                         return;
  77                 }
  78
  79         ELOG("No window with this mark found\n");
  80 }
  81
  82 static void focus_thing(xcb_connection_t *conn, direction_t direction, thing_t thing) {
  83         DLOG("focusing direction %d\n", direction);
  84
  85         int new_row = current_row,
  86             new_col = current_col;
  87         Container *container = CUR_CELL;
  88         Workspace *t_ws = c_ws;
  89
  90         /* Makes sure new_col and new_row are within bounds of the new workspace */
  91         void check_colrow_boundaries() {
  92                 if (new_col >= t_ws->cols)
  93                         new_col = (t_ws->cols - 1);
  94                 if (new_row >= t_ws->rows)
  95                         new_row = (t_ws->rows - 1);
  96         }
  97
  98         /* There always is a container. If not, current_col or current_row is wrong */
  99         assert(container != NULL);
 100
 101         if (container->workspace->fullscreen_client != NULL) {
 102                 LOG("You're in fullscreen mode. Won't switch focus\n");
 103                 return;
 104         }
 105
 106         /* For focusing screens, situation is different: we get the rect
 107          * of the current screen, then get the screen which is on its
 108          * right/left/bottom/top and just switch to the workspace on
 109          * the target screen. */
 110         if (thing == THING_SCREEN) {
 111                 i3Screen *cs = c_ws->screen;
 112                 assert(cs != NULL);
 113                 Rect bounds = cs->rect;
 114
 115                 if (direction == D_RIGHT)
 116                         bounds.x += bounds.width;
 117                 else if (direction == D_LEFT)
 118                         bounds.x -= bounds.width;
 119                 else if (direction == D_UP)
 120                         bounds.y -= bounds.height;
 121                 else bounds.y += bounds.height;
 122
 123                 i3Screen *target = get_screen_containing(bounds.x, bounds.y);
 124                 if (target == NULL) {
 125                         DLOG("Target screen NULL\n");
 126                         /* Wrap around if the target screen is out of bounds */
 127                         if (direction == D_RIGHT)
 128                                 target = get_screen_most(D_LEFT, cs);
 129                         else if (direction == D_LEFT)
 130                                 target = get_screen_most(D_RIGHT, cs);
 131                         else if (direction == D_UP)
 132                                 target = get_screen_most(D_DOWN, cs);
 133                         else target = get_screen_most(D_UP, cs);
 134                 }
 135
 136                 DLOG("Switching to ws %d\n", target->current_workspace + 1);
 137                 workspace_show(conn, target->current_workspace->num + 1);
 138                 return;
 139         }
 140
 141         /* TODO: for horizontal default layout, this has to be expanded to LEFT/RIGHT */
 142         if (direction == D_UP || direction == D_DOWN) {
 143                 if (thing == THING_WINDOW)
 144                         /* Let’s see if we can perform up/down focus in the current container */
 145                         if (focus_window_in_container(conn, container, direction))
 146                                 return;
 147
 148                 if (direction == D_DOWN && cell_exists(t_ws, current_col, current_row+1))
 149                         new_row = current_row + t_ws->table[current_col][current_row]->rowspan;
 150                 else if (direction == D_UP && cell_exists(c_ws, current_col, current_row-1)) {
 151                         /* Set new_row as a sane default, but it may get overwritten in a second */
 152                         new_row--;
 153
 154                         /* Search from the top to correctly handle rowspanned containers */
 155                         for (int rows = 0; rows < current_row; rows += t_ws->table[current_col][rows]->rowspan) {
 156                                 if (new_row > (rows + (t_ws->table[current_col][rows]->rowspan - 1)))
 157                                         continue;
 158
 159                                 new_row = rows;
 160                                 break;
 161                         }
 162                 } else {
 163                         /* Let’s see if there is a screen down/up there to which we can switch */
 164                         DLOG("container is at %d with height %d\n", container->y, container->height);
 165                         i3Screen *screen;
 166                         int destination_y = (direction == D_UP ? (container->y - 1) : (container->y + container->height + 1));
 167                         if ((screen = get_screen_containing(container->x, destination_y)) == NULL) {
 168                                 DLOG("Wrapping screen around vertically\n");
 169                                 /* No screen found? Then wrap */
 170                                 screen = get_screen_most((direction == D_UP ? D_DOWN : D_UP), container->workspace->screen);
 171                         }
 172                         t_ws = screen->current_workspace;
 173                         new_row = (direction == D_UP ? (t_ws->rows - 1) : 0);
 174                 }
 175
 176                 check_colrow_boundaries();
 177
 178                 DLOG("new_col = %d, new_row = %d\n", new_col, new_row);
 179                 if (t_ws->table[new_col][new_row]->currently_focused == NULL) {
 180                         DLOG("Cell empty, checking for colspanned client above...\n");
 181                         for (int cols = 0; cols < new_col; cols += t_ws->table[cols][new_row]->colspan) {
 182                                 if (new_col > (cols + (t_ws->table[cols][new_row]->colspan - 1)))
 183                                         continue;
 184
 185                                 new_col = cols;
 186                                 break;
 187                         }
 188                         DLOG("Fixed it to new col %d\n", new_col);
 189                 }
 190         } else if (direction == D_LEFT || direction == D_RIGHT) {
 191                 if (direction == D_RIGHT && cell_exists(t_ws, current_col+1, current_row))
 192                         new_col = current_col + t_ws->table[current_col][current_row]->colspan;
 193                 else if (direction == D_LEFT && cell_exists(t_ws, current_col-1, current_row)) {
 194                         /* Set new_col as a sane default, but it may get overwritten in a second */
 195                         new_col--;
 196
 197                         /* Search from the left to correctly handle colspanned containers */
 198                         for (int cols = 0; cols < current_col; cols += t_ws->table[cols][current_row]->colspan) {
 199                                 if (new_col > (cols + (t_ws->table[cols][current_row]->colspan - 1)))
 200                                         continue;
 201
 202                                 new_col = cols;
 203                                 break;
 204                         }
 205                 } else {
 206                         /* Let’s see if there is a screen left/right here to which we can switch */
 207                         DLOG("container is at %d with width %d\n", container->x, container->width);
 208                         i3Screen *screen;
 209                         int destination_x = (direction == D_LEFT ? (container->x - 1) : (container->x + container->width + 1));
 210                         if ((screen = get_screen_containing(destination_x, container->y)) == NULL) {
 211                                 DLOG("Wrapping screen around horizontally\n");
 212                                 screen = get_screen_most((direction == D_LEFT ? D_RIGHT : D_LEFT), container->workspace->screen);
 213                         }
 214                         t_ws = screen->current_workspace;
 215                         new_col = (direction == D_LEFT ? (t_ws->cols - 1) : 0);
 216                 }
 217
 218                 check_colrow_boundaries();
 219
 220                 DLOG("new_col = %d, new_row = %d\n", new_col, new_row);
 221                 if (t_ws->table[new_col][new_row]->currently_focused == NULL) {
 222                         DLOG("Cell empty, checking for rowspanned client above...\n");
 223                         for (int rows = 0; rows < new_row; rows += t_ws->table[new_col][rows]->rowspan) {
 224                                 if (new_row > (rows + (t_ws->table[new_col][rows]->rowspan - 1)))
 225                                         continue;
 226
 227                                 new_row = rows;
 228                                 break;
 229                         }
 230                         DLOG("Fixed it to new row %d\n", new_row);
 231                 }
 232         } else {
 233                 ELOG("direction unhandled\n");
 234                 return;
 235         }
 236
 237         check_colrow_boundaries();
 238
 239         if (t_ws->table[new_col][new_row]->currently_focused != NULL)
 240                 set_focus(conn, t_ws->table[new_col][new_row]->currently_focused, true);
 241 }
 242
 243 /*
 244  * Tries to move the window inside its current container.
 245  *
 246  * Returns true if the window could be moved, false otherwise.
 247  *
 248  */
 249 static bool move_current_window_in_container(xcb_connection_t *conn, Client *client,
 250                 direction_t direction) {
 251         assert(client->container != NULL);
 252
 253         Client *other = (direction == D_UP ? CIRCLEQ_PREV(client, clients) :
 254                                              CIRCLEQ_NEXT(client, clients));
 255
 256         if (other == CIRCLEQ_END(&(client->container->clients)))
 257                 return false;
 258
 259         DLOG("i can do that\n");
 260         /* We can move the client inside its current container */
 261         CIRCLEQ_REMOVE(&(client->container->clients), client, clients);
 262         if (direction == D_UP)
 263                 CIRCLEQ_INSERT_BEFORE(&(client->container->clients), other, client, clients);
 264         else CIRCLEQ_INSERT_AFTER(&(client->container->clients), other, client, clients);
 265         render_layout(conn);
 266         return true;
 267 }
 268
 269 /*
 270  * Moves the current window or whole container to the given direction, creating a column/row if
 271  * necessary.
 272  *
 273  */
 274 static void move_current_window(xcb_connection_t *conn, direction_t direction) {
 275         LOG("moving window to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" :
 276                                             (direction == D_LEFT ? "left" : "right"))));
 277         /* Get current window */
 278         Container *container = CUR_CELL,
 279                   *new = NULL;
 280
 281         /* There has to be a container, see focus_window() */
 282         assert(container != NULL);
 283
 284         /* If there is no window or the dock window is focused, we’re done */
 285         if (container->currently_focused == NULL ||
 286             container->currently_focused->dock)
 287                 return;
 288
 289         /* As soon as the client is moved away, the last focused client in the old
 290          * container needs to get focus, if any. Therefore, we save it here. */
 291         Client *current_client = container->currently_focused;
 292         Client *to_focus = get_last_focused_client(conn, container, current_client);
 293
 294         if (to_focus == NULL) {
 295                 to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients);
 296                 if (to_focus == NULL)
 297                         to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients);
 298         }
 299
 300         switch (direction) {
 301                 case D_LEFT:
 302                         /* If we’re at the left-most position, move the rest of the table right */
 303                         if (current_col == 0) {
 304                                 expand_table_cols_at_head(c_ws);
 305                                 new = CUR_CELL;
 306                         } else
 307                                 new = CUR_TABLE[--current_col][current_row];
 308                         break;
 309                 case D_RIGHT:
 310                         if (current_col == (c_ws->cols-1))
 311                                 expand_table_cols(c_ws);
 312
 313                         new = CUR_TABLE[++current_col][current_row];
 314                         break;
 315                 case D_UP:
 316                         if (move_current_window_in_container(conn, current_client, D_UP))
 317                                 return;
 318
 319                         /* if we’re at the up-most position, move the rest of the table down */
 320                         if (current_row == 0) {
 321                                 expand_table_rows_at_head(c_ws);
 322                                 new = CUR_CELL;
 323                         } else
 324                                 new = CUR_TABLE[current_col][--current_row];
 325                         break;
 326                 case D_DOWN:
 327                         if (move_current_window_in_container(conn, current_client, D_DOWN))
 328                                 return;
 329
 330                         if (current_row == (c_ws->rows-1))
 331                                 expand_table_rows(c_ws);
 332
 333                         new = CUR_TABLE[current_col][++current_row];
 334                         break;
 335                 /* To make static analyzers happy: */
 336                 default:
 337                         return;
 338         }
 339
 340         /* Remove it from the old container and put it into the new one */
 341         client_remove_from_container(conn, current_client, container, true);
 342
 343         if (new->currently_focused != NULL)
 344                 CIRCLEQ_INSERT_AFTER(&(new->clients), new->currently_focused, current_client, clients);
 345         else CIRCLEQ_INSERT_TAIL(&(new->clients), current_client, clients);
 346         SLIST_INSERT_HEAD(&(new->workspace->focus_stack), current_client, focus_clients);
 347
 348         /* Update data structures */
 349         current_client->container = new;
 350         current_client->workspace = new->workspace;
 351         container->currently_focused = to_focus;
 352         new->currently_focused = current_client;
 353
 354         Workspace *workspace = container->workspace;
 355
 356         /* delete all empty columns/rows */
 357         cleanup_table(conn, workspace);
 358
 359         /* Fix colspan/rowspan if it’d overlap */
 360         fix_colrowspan(conn, workspace);
 361
 362         render_workspace(conn, workspace->screen, workspace);
 363         xcb_flush(conn);
 364
 365         set_focus(conn, current_client, true);
 366 }
 367
 368 static void move_current_container(xcb_connection_t *conn, direction_t direction) {
 369         LOG("moving container to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" :
 370                                             (direction == D_LEFT ? "left" : "right"))));
 371         /* Get current window */
 372         Container *container = CUR_CELL,
 373                   *new = NULL;
 374
 375         Container **old = &CUR_CELL;
 376
 377         /* There has to be a container, see focus_window() */
 378         assert(container != NULL);
 379
 380         switch (direction) {
 381                 case D_LEFT:
 382                         /* If we’re at the left-most position, move the rest of the table right */
 383                         if (current_col == 0) {
 384                                 expand_table_cols_at_head(c_ws);
 385                                 new = CUR_CELL;
 386                                 old = &CUR_TABLE[current_col+1][current_row];
 387                         } else
 388                                 new = CUR_TABLE[--current_col][current_row];
 389                         break;
 390                 case D_RIGHT:
 391                         if (current_col == (c_ws->cols-1))
 392                                 expand_table_cols(c_ws);
 393
 394                         new = CUR_TABLE[++current_col][current_row];
 395                         break;
 396                 case D_UP:
 397                         /* if we’re at the up-most position, move the rest of the table down */
 398                         if (current_row == 0) {
 399                                 expand_table_rows_at_head(c_ws);
 400                                 new = CUR_CELL;
 401                                 old = &CUR_TABLE[current_col][current_row+1];
 402                         } else
 403                                 new = CUR_TABLE[current_col][--current_row];
 404                         break;
 405                 case D_DOWN:
 406                         if (current_row == (c_ws->rows-1))
 407                                 expand_table_rows(c_ws);
 408
 409                         new = CUR_TABLE[current_col][++current_row];
 410                         break;
 411                 /* To make static analyzers happy: */
 412                 default:
 413                         return;
 414         }
 415
 416         DLOG("old = %d,%d and new = %d,%d\n", container->col, container->row, new->col, new->row);
 417
 418         /* Swap the containers */
 419         int col = new->col;
 420         int row = new->row;
 421
 422         *old = new;
 423         new->col = container->col;
 424         new->row = container->row;
 425
 426         CUR_CELL = container;
 427         container->col = col;
 428         container->row = row;
 429
 430         Workspace *workspace = container->workspace;
 431
 432         /* delete all empty columns/rows */
 433         cleanup_table(conn, workspace);
 434
 435         /* Fix colspan/rowspan if it’d overlap */
 436         fix_colrowspan(conn, workspace);
 437
 438         render_layout(conn);
 439 }
 440
 441 /*
 442  * "Snaps" the current container (not possible for windows, because it works at table base)
 443  * to the given direction, that is, adjusts cellspan/rowspan
 444  *
 445  */
 446 static void snap_current_container(xcb_connection_t *conn, direction_t direction) {
 447         LOG("snapping container to direction %d\n", direction);
 448
 449         Container *container = CUR_CELL;
 450
 451         assert(container != NULL);
 452
 453         switch (direction) {
 454                 case D_LEFT:
 455                         /* Snap to the left is actually a move to the left and then a snap right */
 456                         if (!cell_exists(container->workspace, container->col - 1, container->row) ||
 457                             CUR_TABLE[container->col-1][container->row]->currently_focused != NULL) {
 458                                 ELOG("cannot snap to left - the cell is already used\n");
 459                                 return;
 460                         }
 461
 462                         move_current_window(conn, D_LEFT);
 463                         snap_current_container(conn, D_RIGHT);
 464                         return;
 465                 case D_RIGHT: {
 466                         /* Check if the cell is used */
 467                         int new_col = container->col + container->colspan;
 468                         for (int i = 0; i < container->rowspan; i++)
 469                                 if (!cell_exists(container->workspace, new_col, container->row + i) ||
 470                                     CUR_TABLE[new_col][container->row + i]->currently_focused != NULL) {
 471                                         ELOG("cannot snap to right - the cell is already used\n");
 472                                         return;
 473                                 }
 474
 475                         /* Check if there are other cells with rowspan, which are in our way.
 476                          * If so, reduce their rowspan. */
 477                         for (int i = container->row-1; i >= 0; i--) {
 478                                 DLOG("we got cell %d, %d with rowspan %d\n",
 479                                                 new_col, i, CUR_TABLE[new_col][i]->rowspan);
 480                                 while ((CUR_TABLE[new_col][i]->rowspan-1) >= (container->row - i))
 481                                         CUR_TABLE[new_col][i]->rowspan--;
 482                                 DLOG("new rowspan = %d\n", CUR_TABLE[new_col][i]->rowspan);
 483                         }
 484
 485                         container->colspan++;
 486                         break;
 487                 }
 488                 case D_UP:
 489                         if (!cell_exists(container->workspace, container->col, container->row - 1) ||
 490                             CUR_TABLE[container->col][container->row-1]->currently_focused != NULL) {
 491                                 ELOG("cannot snap to top - the cell is already used\n");
 492                                 return;
 493                         }
 494
 495                         move_current_window(conn, D_UP);
 496                         snap_current_container(conn, D_DOWN);
 497                         return;
 498                 case D_DOWN: {
 499                         DLOG("snapping down\n");
 500                         int new_row = container->row + container->rowspan;
 501                         for (int i = 0; i < container->colspan; i++)
 502                                 if (!cell_exists(container->workspace, container->col + i, new_row) ||
 503                                     CUR_TABLE[container->col + i][new_row]->currently_focused != NULL) {
 504                                         ELOG("cannot snap down - the cell is already used\n");
 505                                         return;
 506                                 }
 507
 508                         for (int i = container->col-1; i >= 0; i--) {
 509                                 DLOG("we got cell %d, %d with colspan %d\n",
 510                                                 i, new_row, CUR_TABLE[i][new_row]->colspan);
 511                                 while ((CUR_TABLE[i][new_row]->colspan-1) >= (container->col - i))
 512                                         CUR_TABLE[i][new_row]->colspan--;
 513                                 DLOG("new colspan = %d\n", CUR_TABLE[i][new_row]->colspan);
 514
 515                         }
 516
 517                         container->rowspan++;
 518                         break;
 519                 }
 520                 /* To make static analyzers happy: */
 521                 default:
 522                         return;
 523         }
 524
 525         render_layout(conn);
 526 }
 527
 528 static void move_floating_window_to_workspace(xcb_connection_t *conn, Client *client, int workspace) {
 529         /* t_ws (to workspace) is just a container pointer to the workspace we’re switching to */
 530         Workspace *t_ws = workspace_get(workspace-1),
 531                   *old_ws = client->workspace;
 532
 533         LOG("moving floating\n");
 534
 535         workspace_initialize(t_ws, c_ws->screen, false);
 536
 537         /* Check if there is already a fullscreen client on the destination workspace and
 538          * stop moving if so. */
 539         if (client->fullscreen && (t_ws->fullscreen_client != NULL)) {
 540                 ELOG("Not moving: Fullscreen client already existing on destination workspace.\n");
 541                 return;
 542         }
 543
 544         floating_assign_to_workspace(client, t_ws);
 545
 546         /* If we’re moving it to an invisible screen, we need to unmap it */
 547         if (!workspace_is_visible(t_ws)) {
 548                 DLOG("This workspace is not visible, unmapping\n");
 549                 client_unmap(conn, client);
 550         } else {
 551                 /* If this is not the case, we move the window to a workspace
 552                  * which is on another screen, so we also need to adjust its
 553                  * coordinates. */
 554                 DLOG("before x = %d, y = %d\n", client->rect.x, client->rect.y);
 555                 uint32_t relative_x = client->rect.x - old_ws->rect.x,
 556                          relative_y = client->rect.y - old_ws->rect.y;
 557                 DLOG("rel_x = %d, rel_y = %d\n", relative_x, relative_y);
 558                 client->rect.x = t_ws->rect.x + relative_x;
 559                 client->rect.y = t_ws->rect.y + relative_y;
 560                 DLOG("after x = %d, y = %d\n", client->rect.x, client->rect.y);
 561                 reposition_client(conn, client);
 562                 xcb_flush(conn);
 563         }
 564
 565         DLOG("done\n");
 566
 567         render_layout(conn);
 568
 569         if (workspace_is_visible(t_ws))
 570                 set_focus(conn, client, true);
 571 }
 572
 573 /*
 574  * Moves the currently selected window to the given workspace
 575  *
 576  */
 577 static void move_current_window_to_workspace(xcb_connection_t *conn, int workspace) {
 578         LOG("Moving current window to workspace %d\n", workspace);
 579
 580         Container *container = CUR_CELL;
 581
 582         assert(container != NULL);
 583
 584         /* t_ws (to workspace) is just a container pointer to the workspace we’re switching to */
 585         Workspace *t_ws = workspace_get(workspace-1);
 586
 587         Client *current_client = container->currently_focused;
 588         if (current_client == NULL) {
 589                 ELOG("No currently focused client in current container.\n");
 590                 return;
 591         }
 592         Client *to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients);
 593         if (to_focus == NULL)
 594                 to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients);
 595
 596         workspace_initialize(t_ws, container->workspace->screen, false);
 597         /* Check if there is already a fullscreen client on the destination workspace and
 598          * stop moving if so. */
 599         if (current_client->fullscreen && (t_ws->fullscreen_client != NULL)) {
 600                 ELOG("Not moving: Fullscreen client already existing on destination workspace.\n");
 601                 return;
 602         }
 603
 604         Container *to_container = t_ws->table[t_ws->current_col][t_ws->current_row];
 605
 606         assert(to_container != NULL);
 607
 608         client_remove_from_container(conn, current_client, container, true);
 609         if (container->workspace->fullscreen_client == current_client)
 610                 container->workspace->fullscreen_client = NULL;
 611
 612         /* TODO: insert it to the correct position */
 613         CIRCLEQ_INSERT_TAIL(&(to_container->clients), current_client, clients);
 614
 615         SLIST_INSERT_HEAD(&(to_container->workspace->focus_stack), current_client, focus_clients);
 616         DLOG("Moved.\n");
 617
 618         current_client->container = to_container;
 619         current_client->workspace = to_container->workspace;
 620         container->currently_focused = to_focus;
 621         to_container->currently_focused = current_client;
 622
 623         /* If we’re moving it to an invisible screen, we need to unmap it */
 624         if (!workspace_is_visible(to_container->workspace)) {
 625                 DLOG("This workspace is not visible, unmapping\n");
 626                 client_unmap(conn, current_client);
 627         } else {
 628                 if (current_client->fullscreen) {
 629                         DLOG("Calling client_enter_fullscreen again\n");
 630                         client_enter_fullscreen(conn, current_client);
 631                 }
 632         }
 633
 634         /* delete all empty columns/rows */
 635         cleanup_table(conn, container->workspace);
 636
 637         render_layout(conn);
 638
 639         if (workspace_is_visible(to_container->workspace))
 640                 set_focus(conn, current_client, true);
 641 }
 642
 643 /*
 644  * Jumps to the given window class / title.
 645  * Title is matched using strstr, that is, matches if it appears anywhere
 646  * in the string. Regular expressions seem to be a bit overkill here. However,
 647  * if we need them for something else somewhen, we may introduce them here, too.
 648  *
 649  */
 650 static void jump_to_window(xcb_connection_t *conn, const char *arguments) {
 651         char *classtitle;
 652         Client *client;
 653
 654         /* The first character is a quote, this was checked before */
 655         classtitle = sstrdup(arguments+1);
 656         /* The last character is a quote, we just set it to NULL */
 657         classtitle[strlen(classtitle)-1] = '\0';
 658
 659         if ((client = get_matching_client(conn, classtitle, NULL)) == NULL) {
 660                 free(classtitle);
 661                 ELOG("No matching client found.\n");
 662                 return;
 663         }
 664
 665         free(classtitle);
 666         set_focus(conn, client, true);
 667 }
 668
 669 /*
 670  * Jump directly to the specified workspace, row and col.
 671  * Great for reaching windows that you always keep in the same spot (hello irssi, I'm looking at you)
 672  *
 673  */
 674 static void jump_to_container(xcb_connection_t *conn, const char *arguments) {
 675         int ws, row, col;
 676         int result;
 677
 678         result = sscanf(arguments, "%d %d %d", &ws, &col, &row);
 679         LOG("Jump called with %d parameters (\"%s\")\n", result, arguments);
 680
 681         /* No match? Either no arguments were specified, or no numbers */
 682         if (result < 1) {
 683                 ELOG("At least one valid argument required\n");
 684                 return;
 685         }
 686
 687         /* Move to the target workspace */
 688         workspace_show(conn, ws);
 689
 690         if (result < 3)
 691                 return;
 692
 693         DLOG("Boundary-checking col %d, row %d... (max cols %d, max rows %d)\n", col, row, c_ws->cols, c_ws->rows);
 694
 695         /* Move to row/col */
 696         if (row >= c_ws->rows)
 697                 row = c_ws->rows - 1;
 698         if (col >= c_ws->cols)
 699                 col = c_ws->cols - 1;
 700
 701         DLOG("Jumping to col %d, row %d\n", col, row);
 702         if (c_ws->table[col][row]->currently_focused != NULL)
 703                 set_focus(conn, c_ws->table[col][row]->currently_focused, true);
 704 }
 705
 706 /*
 707  * Travels the focus stack by the given number of times (or once, if no argument
 708  * was specified). That is, selects the window you were in before you focused
 709  * the current window.
 710  *
 711  * The special values 'floating' (select the next floating window), 'tiling'
 712  * (select the next tiling window), 'ft' (if the current window is floating,
 713  * select the next tiling window and vice-versa) are also valid
 714  *
 715  */
 716 static void travel_focus_stack(xcb_connection_t *conn, const char *arguments) {
 717         /* Start count at -1 to always skip the first element */
 718         int times, count = -1;
 719         Client *current;
 720         bool floating_criteria;
 721
 722         /* Either it’s one of the special values… */
 723         if (strcasecmp(arguments, "floating") == 0) {
 724                 floating_criteria = true;
 725         } else if (strcasecmp(arguments, "tiling") == 0) {
 726                 floating_criteria = false;
 727         } else if (strcasecmp(arguments, "ft") == 0) {
 728                 Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
 729                 if (last_focused == SLIST_END(&(c_ws->focus_stack))) {
 730                         ELOG("Cannot select the next floating/tiling client because there is no client at all\n");
 731                         return;
 732                 }
 733
 734                 floating_criteria = !client_is_floating(last_focused);
 735         } else {
 736                 /* …or a number was specified */
 737                 if (sscanf(arguments, "%u", &times) != 1) {
 738                         ELOG("No or invalid argument given (\"%s\"), using default of 1 times\n", arguments);
 739                         times = 1;
 740                 }
 741
 742                 SLIST_FOREACH(current, &(CUR_CELL->workspace->focus_stack), focus_clients) {
 743                         if (++count < times) {
 744                                 DLOG("Skipping\n");
 745                                 continue;
 746                         }
 747
 748                         DLOG("Focussing\n");
 749                         set_focus(conn, current, true);
 750                         break;
 751                 }
 752                 return;
 753         }
 754
 755         /* Select the next client matching the criteria parsed above */
 756         SLIST_FOREACH(current, &(CUR_CELL->workspace->focus_stack), focus_clients)
 757                 if (client_is_floating(current) == floating_criteria) {
 758                         set_focus(conn, current, true);
 759                         break;
 760                 }
 761 }
 762
 763 /*
 764  * Switch to next or previous existing workspace
 765  *
 766  */
 767 static void next_previous_workspace(xcb_connection_t *conn, int direction) {
 768         Workspace *ws = c_ws;
 769
 770         if (direction == 'n') {
 771                 while ((ws = TAILQ_NEXT(ws, workspaces)) != TAILQ_END(workspaces_head)) {
 772                         if (ws->screen == NULL)
 773                                 continue;
 774
 775                         workspace_show(conn, ws->num + 1);
 776                         return;
 777                 }
 778         } else if (direction == 'p') {
 779                 while ((ws = TAILQ_PREV(ws, workspaces_head, workspaces)) != TAILQ_END(workspaces)) {
 780                         if (ws->screen == NULL)
 781                                 continue;
 782
 783                         workspace_show(conn, ws->num + 1);
 784                         return;
 785                 }
 786         }
 787 }
 788
 789 static void parse_resize_command(xcb_connection_t *conn, Client *last_focused, const char *command) {
 790         int first, second;
 791         resize_orientation_t orientation = O_VERTICAL;
 792         Container *con = last_focused->container;
 793         Workspace *ws = con->workspace;
 794
 795         if (STARTS_WITH(command, "left")) {
 796                 if (con->col == 0)
 797                         return;
 798                 first = con->col - 1;
 799                 second = con->col;
 800                 command += strlen("left");
 801         } else if (STARTS_WITH(command, "right")) {
 802                 first = con->col + (con->colspan - 1);
 803                 DLOG("column %d\n", first);
 804
 805                 if (!cell_exists(ws, first, con->row) ||
 806                     (first == (ws->cols-1)))
 807                         return;
 808
 809                 second = first + 1;
 810                 command += strlen("right");
 811         } else if (STARTS_WITH(command, "top")) {
 812                 if (con->row == 0)
 813                         return;
 814                 first = con->row - 1;
 815                 second = con->row;
 816                 orientation = O_HORIZONTAL;
 817                 command += strlen("top");
 818         } else if (STARTS_WITH(command, "bottom")) {
 819                 first = con->row + (con->rowspan - 1);
 820                 if (!cell_exists(ws, con->col, first) ||
 821                     (first == (ws->rows-1)))
 822                         return;
 823
 824                 second = first + 1;
 825                 orientation = O_HORIZONTAL;
 826                 command += strlen("bottom");
 827         } else {
 828                 ELOG("Syntax: resize <left|right|top|bottom> [+|-]<pixels>\n");
 829                 return;
 830         }
 831
 832         int pixels = atoi(command);
 833         if (pixels == 0)
 834                 return;
 835
 836         resize_container(conn, ws, first, second, orientation, pixels);
 837 }
 838
 839 /*
 840  * Parses a command, see file CMDMODE for more information
 841  *
 842  */
 843 void parse_command(xcb_connection_t *conn, const char *command) {
 844         LOG("--- parsing command \"%s\" ---\n", command);
 845         /* Get the first client from focus stack because floating clients are not
 846          * in any container, therefore CUR_CELL is not appropriate. */
 847         Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
 848         if (last_focused == SLIST_END(&(c_ws->focus_stack)))
 849                 last_focused = NULL;
 850
 851         /* Hmm, just to be sure */
 852         if (command[0] == '\0')
 853                 return;
 854
 855         /* Is it an <exec>? Then execute the given command. */
 856         if (STARTS_WITH(command, "exec ")) {
 857                 LOG("starting \"%s\"\n", command + strlen("exec "));
 858                 start_application(command+strlen("exec "));
 859                 return;
 860         }
 861
 862         if (STARTS_WITH(command, "mark")) {
 863                 if (last_focused == NULL) {
 864                         ELOG("There is no window to mark\n");
 865                         return;
 866                 }
 867                 const char *rest = command + strlen("mark");
 868                 while (*rest == ' ')
 869                         rest++;
 870                 if (*rest == '\0') {
 871                         DLOG("interactive mark starting\n");
 872                         start_application("i3-input -p 'mark ' -l 1 -P 'Mark: '");
 873                 } else {
 874                         LOG("mark with \"%s\"\n", rest);
 875                         client_mark(conn, last_focused, rest);
 876                 }
 877                 return;
 878         }
 879
 880         if (STARTS_WITH(command, "goto")) {
 881                 const char *rest = command + strlen("goto");
 882                 while (*rest == ' ')
 883                         rest++;
 884                 if (*rest == '\0') {
 885                         DLOG("interactive go to mark starting\n");
 886                         start_application("i3-input -p 'goto ' -l 1 -P 'Goto: '");
 887                 } else {
 888                         LOG("go to \"%s\"\n", rest);
 889                         jump_to_mark(conn, rest);
 890                 }
 891                 return;
 892         }
 893
 894         if (STARTS_WITH(command, "stack-limit ")) {
 895                 if (last_focused == NULL || client_is_floating(last_focused)) {
 896                         ELOG("No container focused\n");
 897                         return;
 898                 }
 899                 const char *rest = command + strlen("stack-limit ");
 900                 if (strncmp(rest, "rows ", strlen("rows ")) == 0) {
 901                         last_focused->container->stack_limit = STACK_LIMIT_ROWS;
 902                         rest += strlen("rows ");
 903                 } else if (strncmp(rest, "cols ", strlen("cols ")) == 0) {
 904                         last_focused->container->stack_limit = STACK_LIMIT_COLS;
 905                         rest += strlen("cols ");
 906                 } else {
 907                         ELOG("Syntax: stack-limit <cols|rows> <limit>\n");
 908                         return;
 909                 }
 910
 911                 last_focused->container->stack_limit_value = atoi(rest);
 912                 if (last_focused->container->stack_limit_value == 0)
 913                         last_focused->container->stack_limit = STACK_LIMIT_NONE;
 914
 915                 return;
 916         }
 917
 918         if (STARTS_WITH(command, "resize ")) {
 919                 if (last_focused == NULL)
 920                         return;
 921                 const char *rest = command + strlen("resize ");
 922                 parse_resize_command(conn, last_focused, rest);
 923                 return;
 924         }
 925
 926         if (STARTS_WITH(command, "mode ")) {
 927                 const char *rest = command + strlen("mode ");
 928                 switch_mode(conn, rest);
 929                 return;
 930         }
 931
 932         /* Is it an <exit>? */
 933         if (STARTS_WITH(command, "exit")) {
 934                 LOG("User issued exit-command, exiting without error.\n");
 935                 exit(EXIT_SUCCESS);
 936         }
 937
 938         /* Is it a <reload>? */
 939         if (STARTS_WITH(command, "reload")) {
 940                 load_configuration(conn, NULL, true);
 941                 return;
 942         }
 943
 944         /* Is it <restart>? Then restart in place. */
 945         if (STARTS_WITH(command, "restart")) {
 946                 i3_restart();
 947         }
 948
 949         if (STARTS_WITH(command, "kill")) {
 950                 if (last_focused == NULL) {
 951                         ELOG("There is no window to kill\n");
 952                         return;
 953                 }
 954
 955                 LOG("Killing current window\n");
 956                 client_kill(conn, last_focused);
 957                 return;
 958         }
 959
 960         /* Is it a jump to a specified workspace, row, col? */
 961         if (STARTS_WITH(command, "jump ")) {
 962                 const char *arguments = command + strlen("jump ");
 963                 if (arguments[0] == '"')
 964                         jump_to_window(conn, arguments);
 965                 else jump_to_container(conn, arguments);
 966                 return;
 967         }
 968
 969         /* Should we travel the focus stack? */
 970         if (STARTS_WITH(command, "focus")) {
 971                 const char *arguments = command + strlen("focus ");
 972                 travel_focus_stack(conn, arguments);
 973                 return;
 974         }
 975
 976         /* Is it 'f' for fullscreen? */
 977         if (command[0] == 'f') {
 978                 if (last_focused == NULL)
 979                         return;
 980                 client_toggle_fullscreen(conn, last_focused);
 981                 return;
 982         }
 983
 984         /* Is it just 's' for stacking or 'd' for default? */
 985         if ((command[0] == 's' || command[0] == 'd' || command[0] == 'T') && (command[1] == '\0')) {
 986                 if (last_focused != NULL && client_is_floating(last_focused)) {
 987                         ELOG("not switching, this is a floating client\n");
 988                         return;
 989                 }
 990                 LOG("Switching mode for current container\n");
 991                 int new_mode = MODE_DEFAULT;
 992                 if (command[0] == 's')
 993                         new_mode = MODE_STACK;
 994                 if (command[0] == 'T')
 995                         new_mode = MODE_TABBED;
 996                 switch_layout_mode(conn, CUR_CELL, new_mode);
 997                 return;
 998         }
 999
1000         /* Is it 'bn' (border normal), 'bp' (border 1pixel) or 'bb' (border borderless)? */
1001         /* or even 'bt' (toggle border: 'bp' -> 'bb' -> 'bn' ) */
1002         if (command[0] == 'b') {
1003                 if (last_focused == NULL) {
1004                         ELOG("No window focused, cannot change border type\n");
1005                         return;
1006                 }
1007
1008                 char com = command[1];
1009                 if (command[1] == 't') {
1010                         if (last_focused->titlebar_position == TITLEBAR_TOP &&
1011                             !last_focused->borderless)
1012                             com = 'p';
1013                         else if (last_focused->titlebar_position == TITLEBAR_OFF &&
1014                                  !last_focused->borderless)
1015                             com = 'b';
1016                         else com = 'n';
1017                 }
1018
1019                 client_change_border(conn, last_focused, com);
1020                 return;
1021         }
1022
1023         if (command[0] == 'H') {
1024                 LOG("Hiding all floating windows\n");
1025                 floating_toggle_hide(conn, c_ws);
1026                 return;
1027         }
1028
1029         enum { WITH_WINDOW, WITH_CONTAINER, WITH_WORKSPACE, WITH_SCREEN } with = WITH_WINDOW;
1030
1031         /* Is it a <with>? */
1032         if (command[0] == 'w') {
1033                 command++;
1034                 /* TODO: implement */
1035                 if (command[0] == 'c') {
1036                         with = WITH_CONTAINER;
1037                         command++;
1038                 } else if (command[0] == 'w') {
1039                         with = WITH_WORKSPACE;
1040                         command++;
1041                 } else if (command[0] == 's') {
1042                         with = WITH_SCREEN;
1043                         command++;
1044                 } else {
1045                         ELOG("not yet implemented.\n");
1046                         return;
1047                 }
1048         }
1049
1050         /* Is it 't' for toggle tiling/floating? */
1051         if (command[0] == 't') {
1052                 if (with == WITH_WORKSPACE) {
1053                         c_ws->auto_float = !c_ws->auto_float;
1054                         LOG("autofloat is now %d\n", c_ws->auto_float);
1055                         return;
1056                 }
1057                 if (last_focused == NULL) {
1058                         ELOG("Cannot toggle tiling/floating: workspace empty\n");
1059                         return;
1060                 }
1061
1062                 Workspace *ws = last_focused->workspace;
1063
1064                 toggle_floating_mode(conn, last_focused, false);
1065                 /* delete all empty columns/rows */
1066                 cleanup_table(conn, ws);
1067
1068                 /* Fix colspan/rowspan if it’d overlap */
1069                 fix_colrowspan(conn, ws);
1070
1071                 render_workspace(conn, ws->screen, ws);
1072
1073                 /* Re-focus the client because cleanup_table sets the focus to the last
1074                  * focused client inside a container only. */
1075                 set_focus(conn, last_focused, true);
1076
1077                 return;
1078         }
1079
1080         /* Is it 'n' or 'p' for next/previous workspace? (nw) */
1081         if ((command[0] == 'n' || command[0] == 'p') && command[1] == 'w') {
1082                next_previous_workspace(conn, command[0]);
1083                return;
1084         }
1085
1086         /* It’s a normal <cmd> */
1087         char *rest = NULL;
1088         enum { ACTION_FOCUS, ACTION_MOVE, ACTION_SNAP } action = ACTION_FOCUS;
1089         direction_t direction;
1090         int times = strtol(command, &rest, 10);
1091         if (rest == NULL) {
1092                 ELOG("Invalid command (\"%s\")\n", command);
1093                 return;
1094         }
1095
1096         if (*rest == '\0') {
1097                 /* No rest? This was a workspace number, not a times specification */
1098                 workspace_show(conn, times);
1099                 return;
1100         }
1101
1102         if (*rest == 'm' || *rest == 's') {
1103                 action = (*rest == 'm' ? ACTION_MOVE : ACTION_SNAP);
1104                 rest++;
1105         }
1106
1107         int workspace = strtol(rest, &rest, 10);
1108
1109         if (rest == NULL) {
1110                 ELOG("Invalid command (\"%s\")\n", command);
1111                 return;
1112         }
1113
1114         if (*rest == '\0') {
1115                 if (last_focused != NULL && client_is_floating(last_focused))
1116                         move_floating_window_to_workspace(conn, last_focused, workspace);
1117                 else move_current_window_to_workspace(conn, workspace);
1118                 return;
1119         }
1120
1121         if (last_focused == NULL) {
1122                 ELOG("Not performing (no window found)\n");
1123                 return;
1124         }
1125
1126         if (client_is_floating(last_focused) &&
1127             (action != ACTION_FOCUS && action != ACTION_MOVE)) {
1128                 ELOG("Not performing (floating)\n");
1129                 return;
1130         }
1131
1132         /* Now perform action to <where> */
1133         while (*rest != '\0') {
1134                 if (*rest == 'h')
1135                         direction = D_LEFT;
1136                 else if (*rest == 'j')
1137                         direction = D_DOWN;
1138                 else if (*rest == 'k')
1139                         direction = D_UP;
1140                 else if (*rest == 'l')
1141                         direction = D_RIGHT;
1142                 else {
1143                         ELOG("unknown direction: %c\n", *rest);
1144                         return;
1145                 }
1146                 rest++;
1147
1148                 if (action == ACTION_FOCUS) {
1149                         if (with == WITH_SCREEN) {
1150                                 focus_thing(conn, direction, THING_SCREEN);
1151                                 continue;
1152                         }
1153                         if (client_is_floating(last_focused)) {
1154                                 floating_focus_direction(conn, last_focused, direction);
1155                                 continue;
1156                         }
1157                         focus_thing(conn, direction, (with == WITH_WINDOW ? THING_WINDOW : THING_CONTAINER));
1158                         continue;
1159                 }
1160
1161                 if (action == ACTION_MOVE) {
1162                         if (with == WITH_SCREEN) {
1163                                 /* TODO: this should swap the screen’s contents
1164                                  * (e.g. all workspaces) with the next/previous/…
1165                                  * screen */
1166                                 ELOG("Not yet implemented\n");
1167                                 continue;
1168                         }
1169                         if (client_is_floating(last_focused)) {
1170                                 floating_move(conn, last_focused, direction);
1171                                 continue;
1172                         }
1173                         if (with == WITH_WINDOW)
1174                                 move_current_window(conn, direction);
1175                         else move_current_container(conn, direction);
1176                         continue;
1177                 }
1178
1179                 if (action == ACTION_SNAP) {
1180                         if (with == WITH_SCREEN) {
1181                                 ELOG("You cannot snap a screen (it makes no sense).\n");
1182                                 continue;
1183                         }
1184                         snap_current_container(conn, direction);
1185                         continue;
1186                 }
1187         }
1188 }