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                 client_warp_pointer_into(conn, current_client);
 641                 set_focus(conn, current_client, true);
 642         }
 643 }
 644
 645 /*
 646  * Jumps to the given window class / title.
 647  * Title is matched using strstr, that is, matches if it appears anywhere
 648  * in the string. Regular expressions seem to be a bit overkill here. However,
 649  * if we need them for something else somewhen, we may introduce them here, too.
 650  *
 651  */
 652 static void jump_to_window(xcb_connection_t *conn, const char *arguments) {
 653         char *classtitle;
 654         Client *client;
 655
 656         /* The first character is a quote, this was checked before */
 657         classtitle = sstrdup(arguments+1);
 658         /* The last character is a quote, we just set it to NULL */
 659         classtitle[strlen(classtitle)-1] = '\0';
 660
 661         if ((client = get_matching_client(conn, classtitle, NULL)) == NULL) {
 662                 free(classtitle);
 663                 ELOG("No matching client found.\n");
 664                 return;
 665         }
 666
 667         free(classtitle);
 668         set_focus(conn, client, true);
 669 }
 670
 671 /*
 672  * Jump directly to the specified workspace, row and col.
 673  * Great for reaching windows that you always keep in the same spot (hello irssi, I'm looking at you)
 674  *
 675  */
 676 static void jump_to_container(xcb_connection_t *conn, const char *arguments) {
 677         int ws, row, col;
 678         int result;
 679
 680         result = sscanf(arguments, "%d %d %d", &ws, &col, &row);
 681         LOG("Jump called with %d parameters (\"%s\")\n", result, arguments);
 682
 683         /* No match? Either no arguments were specified, or no numbers */
 684         if (result < 1) {
 685                 ELOG("At least one valid argument required\n");
 686                 return;
 687         }
 688
 689         /* Move to the target workspace */
 690         workspace_show(conn, ws);
 691
 692         if (result < 3)
 693                 return;
 694
 695         DLOG("Boundary-checking col %d, row %d... (max cols %d, max rows %d)\n", col, row, c_ws->cols, c_ws->rows);
 696
 697         /* Move to row/col */
 698         if (row >= c_ws->rows)
 699                 row = c_ws->rows - 1;
 700         if (col >= c_ws->cols)
 701                 col = c_ws->cols - 1;
 702
 703         DLOG("Jumping to col %d, row %d\n", col, row);
 704         if (c_ws->table[col][row]->currently_focused != NULL)
 705                 set_focus(conn, c_ws->table[col][row]->currently_focused, true);
 706 }
 707
 708 /*
 709  * Travels the focus stack by the given number of times (or once, if no argument
 710  * was specified). That is, selects the window you were in before you focused
 711  * the current window.
 712  *
 713  * The special values 'floating' (select the next floating window), 'tiling'
 714  * (select the next tiling window), 'ft' (if the current window is floating,
 715  * select the next tiling window and vice-versa) are also valid
 716  *
 717  */
 718 static void travel_focus_stack(xcb_connection_t *conn, const char *arguments) {
 719         /* Start count at -1 to always skip the first element */
 720         int times, count = -1;
 721         Client *current;
 722         bool floating_criteria;
 723
 724         /* Either it’s one of the special values… */
 725         if (strcasecmp(arguments, "floating") == 0) {
 726                 floating_criteria = true;
 727         } else if (strcasecmp(arguments, "tiling") == 0) {
 728                 floating_criteria = false;
 729         } else if (strcasecmp(arguments, "ft") == 0) {
 730                 Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
 731                 if (last_focused == SLIST_END(&(c_ws->focus_stack))) {
 732                         ELOG("Cannot select the next floating/tiling client because there is no client at all\n");
 733                         return;
 734                 }
 735
 736                 floating_criteria = !client_is_floating(last_focused);
 737         } else {
 738                 /* …or a number was specified */
 739                 if (sscanf(arguments, "%u", &times) != 1) {
 740                         ELOG("No or invalid argument given (\"%s\"), using default of 1 times\n", arguments);
 741                         times = 1;
 742                 }
 743
 744                 SLIST_FOREACH(current, &(CUR_CELL->workspace->focus_stack), focus_clients) {
 745                         if (++count < times) {
 746                                 DLOG("Skipping\n");
 747                                 continue;
 748                         }
 749
 750                         DLOG("Focussing\n");
 751                         set_focus(conn, current, true);
 752                         break;
 753                 }
 754                 return;
 755         }
 756
 757         /* Select the next client matching the criteria parsed above */
 758         SLIST_FOREACH(current, &(CUR_CELL->workspace->focus_stack), focus_clients)
 759                 if (client_is_floating(current) == floating_criteria) {
 760                         set_focus(conn, current, true);
 761                         break;
 762                 }
 763 }
 764
 765 /*
 766  * Switch to next or previous existing workspace
 767  *
 768  */
 769 static void next_previous_workspace(xcb_connection_t *conn, int direction) {
 770         Workspace *ws = c_ws;
 771
 772         if (direction == 'n') {
 773                 while (1) {
 774                         ws = TAILQ_NEXT(ws, workspaces);
 775
 776                         if (ws == TAILQ_END(workspaces))
 777                                 ws = TAILQ_FIRST(workspaces);
 778
 779                         if (ws == c_ws)
 780                                 return;
 781
 782                         if (ws->screen == NULL)
 783                                 continue;
 784
 785                         workspace_show(conn, ws->num + 1);
 786                         return;
 787                 }
 788         } else if (direction == 'p') {
 789                 while (1) {
 790                         ws = TAILQ_PREV(ws, workspaces_head, workspaces);
 791
 792                         if (ws == TAILQ_END(workspaces))
 793                                 ws = TAILQ_LAST(workspaces, workspaces_head);
 794
 795                         if (ws == c_ws)
 796                                 return;
 797
 798                         if (ws->screen == NULL)
 799                                 continue;
 800
 801                         workspace_show(conn, ws->num + 1);
 802                         return;
 803                 }
 804         }
 805 }
 806
 807 static void parse_resize_command(xcb_connection_t *conn, Client *last_focused, const char *command) {
 808         int first, second;
 809         resize_orientation_t orientation = O_VERTICAL;
 810         Container *con = last_focused->container;
 811         Workspace *ws = last_focused->workspace;
 812
 813         if (client_is_floating(last_focused)) {
 814                 DLOG("Resizing a floating client\n");
 815                 if (STARTS_WITH(command, "left")) {
 816                         command += strlen("left");
 817                         last_focused->rect.width += atoi(command);
 818                         last_focused->rect.x -= atoi(command);
 819                 } else if (STARTS_WITH(command, "right")) {
 820                         command += strlen("right");
 821                         last_focused->rect.width += atoi(command);
 822                 } else if (STARTS_WITH(command, "top")) {
 823                         command += strlen("top");
 824                         last_focused->rect.height += atoi(command);
 825                         last_focused->rect.y -= atoi(command);
 826                 } else if (STARTS_WITH(command, "bottom")) {
 827                         command += strlen("bottom");
 828                         last_focused->rect.height += atoi(command);
 829                 } else {
 830                         ELOG("Syntax: resize <left|right|top|bottom> [+|-]<pixels>\n");
 831                         return;
 832                 }
 833
 834                 /* resize_client flushes */
 835                 resize_client(conn, last_focused);
 836
 837                 return;
 838         }
 839
 840         if (STARTS_WITH(command, "left")) {
 841                 if (con->col == 0)
 842                         return;
 843                 first = con->col - 1;
 844                 second = con->col;
 845                 command += strlen("left");
 846         } else if (STARTS_WITH(command, "right")) {
 847                 first = con->col + (con->colspan - 1);
 848                 DLOG("column %d\n", first);
 849
 850                 if (!cell_exists(ws, first, con->row) ||
 851                     (first == (ws->cols-1)))
 852                         return;
 853
 854                 second = first + 1;
 855                 command += strlen("right");
 856         } else if (STARTS_WITH(command, "top")) {
 857                 if (con->row == 0)
 858                         return;
 859                 first = con->row - 1;
 860                 second = con->row;
 861                 orientation = O_HORIZONTAL;
 862                 command += strlen("top");
 863         } else if (STARTS_WITH(command, "bottom")) {
 864                 first = con->row + (con->rowspan - 1);
 865                 if (!cell_exists(ws, con->col, first) ||
 866                     (first == (ws->rows-1)))
 867                         return;
 868
 869                 second = first + 1;
 870                 orientation = O_HORIZONTAL;
 871                 command += strlen("bottom");
 872         } else {
 873                 ELOG("Syntax: resize <left|right|top|bottom> [+|-]<pixels>\n");
 874                 return;
 875         }
 876
 877         int pixels = atoi(command);
 878         if (pixels == 0)
 879                 return;
 880
 881         resize_container(conn, ws, first, second, orientation, pixels);
 882 }
 883
 884 /*
 885  * Parses a command, see file CMDMODE for more information
 886  *
 887  */
 888 void parse_command(xcb_connection_t *conn, const char *command) {
 889         LOG("--- parsing command \"%s\" ---\n", command);
 890         /* Get the first client from focus stack because floating clients are not
 891          * in any container, therefore CUR_CELL is not appropriate. */
 892         Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
 893         if (last_focused == SLIST_END(&(c_ws->focus_stack)))
 894                 last_focused = NULL;
 895
 896         /* Hmm, just to be sure */
 897         if (command[0] == '\0')
 898                 return;
 899
 900         /* Is it an <exec>? Then execute the given command. */
 901         if (STARTS_WITH(command, "exec ")) {
 902                 LOG("starting \"%s\"\n", command + strlen("exec "));
 903                 start_application(command+strlen("exec "));
 904                 return;
 905         }
 906
 907         if (STARTS_WITH(command, "mark")) {
 908                 if (last_focused == NULL) {
 909                         ELOG("There is no window to mark\n");
 910                         return;
 911                 }
 912                 const char *rest = command + strlen("mark");
 913                 while (*rest == ' ')
 914                         rest++;
 915                 if (*rest == '\0') {
 916                         DLOG("interactive mark starting\n");
 917                         start_application("i3-input -p 'mark ' -l 1 -P 'Mark: '");
 918                 } else {
 919                         LOG("mark with \"%s\"\n", rest);
 920                         client_mark(conn, last_focused, rest);
 921                 }
 922                 return;
 923         }
 924
 925         if (STARTS_WITH(command, "goto")) {
 926                 const char *rest = command + strlen("goto");
 927                 while (*rest == ' ')
 928                         rest++;
 929                 if (*rest == '\0') {
 930                         DLOG("interactive go to mark starting\n");
 931                         start_application("i3-input -p 'goto ' -l 1 -P 'Goto: '");
 932                 } else {
 933                         LOG("go to \"%s\"\n", rest);
 934                         jump_to_mark(conn, rest);
 935                 }
 936                 return;
 937         }
 938
 939         if (STARTS_WITH(command, "stack-limit ")) {
 940                 if (last_focused == NULL || client_is_floating(last_focused)) {
 941                         ELOG("No container focused\n");
 942                         return;
 943                 }
 944                 const char *rest = command + strlen("stack-limit ");
 945                 if (strncmp(rest, "rows ", strlen("rows ")) == 0) {
 946                         last_focused->container->stack_limit = STACK_LIMIT_ROWS;
 947                         rest += strlen("rows ");
 948                 } else if (strncmp(rest, "cols ", strlen("cols ")) == 0) {
 949                         last_focused->container->stack_limit = STACK_LIMIT_COLS;
 950                         rest += strlen("cols ");
 951                 } else {
 952                         ELOG("Syntax: stack-limit <cols|rows> <limit>\n");
 953                         return;
 954                 }
 955
 956                 last_focused->container->stack_limit_value = atoi(rest);
 957                 if (last_focused->container->stack_limit_value == 0)
 958                         last_focused->container->stack_limit = STACK_LIMIT_NONE;
 959
 960                 return;
 961         }
 962
 963         if (STARTS_WITH(command, "resize ")) {
 964                 if (last_focused == NULL)
 965                         return;
 966                 const char *rest = command + strlen("resize ");
 967                 parse_resize_command(conn, last_focused, rest);
 968                 return;
 969         }
 970
 971         if (STARTS_WITH(command, "mode ")) {
 972                 const char *rest = command + strlen("mode ");
 973                 switch_mode(conn, rest);
 974                 return;
 975         }
 976
 977         /* Is it an <exit>? */
 978         if (STARTS_WITH(command, "exit")) {
 979                 LOG("User issued exit-command, exiting without error.\n");
 980                 exit(EXIT_SUCCESS);
 981         }
 982
 983         /* Is it a <reload>? */
 984         if (STARTS_WITH(command, "reload")) {
 985                 load_configuration(conn, NULL, true);
 986                 return;
 987         }
 988
 989         /* Is it <restart>? Then restart in place. */
 990         if (STARTS_WITH(command, "restart")) {
 991                 i3_restart();
 992         }
 993
 994         if (STARTS_WITH(command, "kill")) {
 995                 if (last_focused == NULL) {
 996                         ELOG("There is no window to kill\n");
 997                         return;
 998                 }
 999
1000                 LOG("Killing current window\n");
1001                 client_kill(conn, last_focused);
1002                 return;
1003         }
1004
1005         /* Is it a jump to a specified workspace, row, col? */
1006         if (STARTS_WITH(command, "jump ")) {
1007                 const char *arguments = command + strlen("jump ");
1008                 if (arguments[0] == '"')
1009                         jump_to_window(conn, arguments);
1010                 else jump_to_container(conn, arguments);
1011                 return;
1012         }
1013
1014         /* Should we travel the focus stack? */
1015         if (STARTS_WITH(command, "focus")) {
1016                 const char *arguments = command + strlen("focus ");
1017                 travel_focus_stack(conn, arguments);
1018                 return;
1019         }
1020
1021         /* Is it 'f' for fullscreen? */
1022         if (command[0] == 'f') {
1023                 if (last_focused == NULL)
1024                         return;
1025                 client_toggle_fullscreen(conn, last_focused);
1026                 return;
1027         }
1028
1029         /* Is it just 's' for stacking or 'd' for default? */
1030         if ((command[0] == 's' || command[0] == 'd' || command[0] == 'T') && (command[1] == '\0')) {
1031                 if (last_focused != NULL && client_is_floating(last_focused)) {
1032                         ELOG("not switching, this is a floating client\n");
1033                         return;
1034                 }
1035                 LOG("Switching mode for current container\n");
1036                 int new_mode = MODE_DEFAULT;
1037                 if (command[0] == 's')
1038                         new_mode = MODE_STACK;
1039                 if (command[0] == 'T')
1040                         new_mode = MODE_TABBED;
1041                 switch_layout_mode(conn, CUR_CELL, new_mode);
1042                 return;
1043         }
1044
1045         /* Is it 'bn' (border normal), 'bp' (border 1pixel) or 'bb' (border borderless)? */
1046         /* or even 'bt' (toggle border: 'bp' -> 'bb' -> 'bn' ) */
1047         if (command[0] == 'b') {
1048                 if (last_focused == NULL) {
1049                         ELOG("No window focused, cannot change border type\n");
1050                         return;
1051                 }
1052
1053                 char com = command[1];
1054                 if (command[1] == 't') {
1055                         if (last_focused->titlebar_position == TITLEBAR_TOP &&
1056                             !last_focused->borderless)
1057                             com = 'p';
1058                         else if (last_focused->titlebar_position == TITLEBAR_OFF &&
1059                                  !last_focused->borderless)
1060                             com = 'b';
1061                         else com = 'n';
1062                 }
1063
1064                 client_change_border(conn, last_focused, com);
1065                 return;
1066         }
1067
1068         if (command[0] == 'H') {
1069                 LOG("Hiding all floating windows\n");
1070                 floating_toggle_hide(conn, c_ws);
1071                 return;
1072         }
1073
1074         enum { WITH_WINDOW, WITH_CONTAINER, WITH_WORKSPACE, WITH_SCREEN } with = WITH_WINDOW;
1075
1076         /* Is it a <with>? */
1077         if (command[0] == 'w') {
1078                 command++;
1079                 /* TODO: implement */
1080                 if (command[0] == 'c') {
1081                         with = WITH_CONTAINER;
1082                         command++;
1083                 } else if (command[0] == 'w') {
1084                         with = WITH_WORKSPACE;
1085                         command++;
1086                 } else if (command[0] == 's') {
1087                         with = WITH_SCREEN;
1088                         command++;
1089                 } else {
1090                         ELOG("not yet implemented.\n");
1091                         return;
1092                 }
1093         }
1094
1095         /* Is it 't' for toggle tiling/floating? */
1096         if (command[0] == 't') {
1097                 if (with == WITH_WORKSPACE) {
1098                         c_ws->auto_float = !c_ws->auto_float;
1099                         LOG("autofloat is now %d\n", c_ws->auto_float);
1100                         return;
1101                 }
1102                 if (last_focused == NULL) {
1103                         ELOG("Cannot toggle tiling/floating: workspace empty\n");
1104                         return;
1105                 }
1106
1107                 Workspace *ws = last_focused->workspace;
1108
1109                 toggle_floating_mode(conn, last_focused, false);
1110                 /* delete all empty columns/rows */
1111                 cleanup_table(conn, ws);
1112
1113                 /* Fix colspan/rowspan if it’d overlap */
1114                 fix_colrowspan(conn, ws);
1115
1116                 render_workspace(conn, ws->screen, ws);
1117
1118                 /* Re-focus the client because cleanup_table sets the focus to the last
1119                  * focused client inside a container only. */
1120                 set_focus(conn, last_focused, true);
1121
1122                 return;
1123         }
1124
1125         /* Is it 'n' or 'p' for next/previous workspace? (nw) */
1126         if ((command[0] == 'n' || command[0] == 'p') && command[1] == 'w') {
1127                next_previous_workspace(conn, command[0]);
1128                return;
1129         }
1130
1131         /* It’s a normal <cmd> */
1132         char *rest = NULL;
1133         enum { ACTION_FOCUS, ACTION_MOVE, ACTION_SNAP } action = ACTION_FOCUS;
1134         direction_t direction;
1135         int times = strtol(command, &rest, 10);
1136         if (rest == NULL) {
1137                 ELOG("Invalid command (\"%s\")\n", command);
1138                 return;
1139         }
1140
1141         if (*rest == '\0') {
1142                 /* No rest? This was a workspace number, not a times specification */
1143                 workspace_show(conn, times);
1144                 return;
1145         }
1146
1147         if (*rest == 'm' || *rest == 's') {
1148                 action = (*rest == 'm' ? ACTION_MOVE : ACTION_SNAP);
1149                 rest++;
1150         }
1151
1152         int workspace = strtol(rest, &rest, 10);
1153
1154         if (rest == NULL) {
1155                 ELOG("Invalid command (\"%s\")\n", command);
1156                 return;
1157         }
1158
1159         if (*rest == '\0') {
1160                 if (last_focused != NULL && client_is_floating(last_focused))
1161                         move_floating_window_to_workspace(conn, last_focused, workspace);
1162                 else move_current_window_to_workspace(conn, workspace);
1163                 return;
1164         }
1165
1166         if (last_focused == NULL) {
1167                 ELOG("Not performing (no window found)\n");
1168                 return;
1169         }
1170
1171         if (client_is_floating(last_focused) &&
1172             (action != ACTION_FOCUS && action != ACTION_MOVE)) {
1173                 ELOG("Not performing (floating)\n");
1174                 return;
1175         }
1176
1177         /* Now perform action to <where> */
1178         while (*rest != '\0') {
1179                 if (*rest == 'h')
1180                         direction = D_LEFT;
1181                 else if (*rest == 'j')
1182                         direction = D_DOWN;
1183                 else if (*rest == 'k')
1184                         direction = D_UP;
1185                 else if (*rest == 'l')
1186                         direction = D_RIGHT;
1187                 else {
1188                         ELOG("unknown direction: %c\n", *rest);
1189                         return;
1190                 }
1191                 rest++;
1192
1193                 if (action == ACTION_FOCUS) {
1194                         if (with == WITH_SCREEN) {
1195                                 focus_thing(conn, direction, THING_SCREEN);
1196                                 continue;
1197                         }
1198                         if (client_is_floating(last_focused)) {
1199                                 floating_focus_direction(conn, last_focused, direction);
1200                                 continue;
1201                         }
1202                         focus_thing(conn, direction, (with == WITH_WINDOW ? THING_WINDOW : THING_CONTAINER));
1203                         continue;
1204                 }
1205
1206                 if (action == ACTION_MOVE) {
1207                         if (with == WITH_SCREEN) {
1208                                 /* TODO: this should swap the screen’s contents
1209                                  * (e.g. all workspaces) with the next/previous/…
1210                                  * screen */
1211                                 ELOG("Not yet implemented\n");
1212                                 continue;
1213                         }
1214                         if (client_is_floating(last_focused)) {
1215                                 floating_move(conn, last_focused, direction);
1216                                 continue;
1217                         }
1218                         if (with == WITH_WINDOW)
1219                                 move_current_window(conn, direction);
1220                         else move_current_container(conn, direction);
1221                         continue;
1222                 }
1223
1224                 if (action == ACTION_SNAP) {
1225                         if (with == WITH_SCREEN) {
1226                                 ELOG("You cannot snap a screen (it makes no sense).\n");
1227                                 continue;
1228                         }
1229                         snap_current_container(conn, direction);
1230                         continue;
1231                 }
1232         }
1233 }