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

   1 /*
   2  * vim:ts=8:expandtab
   3  *
   4  * i3 - an improved dynamic tiling window manager
   5  *
   6  * © 2009-2010 Michael Stapelberg and contributors
   7  *
   8  * See file LICENSE for license information.
   9  *
  10  */
  11 #include <stdbool.h>
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #include <assert.h>
  15 #include <unistd.h>
  16 #include <string.h>
  17
  18 #include <xcb/xcb.h>
  19
  20 #include "util.h"
  21 #include "data.h"
  22 #include "table.h"
  23 #include "layout.h"
  24 #include "i3.h"
  25 #include "randr.h"
  26 #include "client.h"
  27 #include "floating.h"
  28 #include "xcb.h"
  29 #include "config.h"
  30 #include "workspace.h"
  31 #include "commands.h"
  32 #include "resize.h"
  33 #include "log.h"
  34 #include "sighandler.h"
  35 #include "manage.h"
  36 #include "ipc.h"
  37
  38 bool focus_window_in_container(xcb_connection_t *conn, Container *container, direction_t direction) {
  39         /* If this container is empty, we’re done */
  40         if (container->currently_focused == NULL)
  41                 return false;
  42
  43         /* Get the previous/next client or wrap around */
  44         Client *candidate = NULL;
  45         if (direction == D_UP) {
  46                 if ((candidate = CIRCLEQ_PREV_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL)
  47                         candidate = CIRCLEQ_LAST(&(container->clients));
  48         }
  49         else if (direction == D_DOWN) {
  50                 if ((candidate = CIRCLEQ_NEXT_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL)
  51                         candidate = CIRCLEQ_FIRST(&(container->clients));
  52         } else ELOG("Direction not implemented!\n");
  53
  54         /* If we could not switch, the container contains exactly one client. We return false */
  55         if (candidate == container->currently_focused)
  56                 return false;
  57
  58         /* Set focus */
  59         set_focus(conn, candidate, true);
  60
  61         return true;
  62 }
  63
  64 typedef enum { THING_WINDOW, THING_CONTAINER, THING_SCREEN } thing_t;
  65
  66 static void jump_to_mark(xcb_connection_t *conn, const char *mark) {
  67         Client *current;
  68         LOG("Jumping to \"%s\"\n", mark);
  69
  70         Workspace *ws;
  71         TAILQ_FOREACH(ws, workspaces, workspaces)
  72                 SLIST_FOREACH(current, &(ws->focus_stack), focus_clients) {
  73                         if (current->mark == NULL || strcmp(current->mark, mark) != 0)
  74                                 continue;
  75
  76                         workspace_show(conn, current->workspace->num + 1);
  77                         set_focus(conn, current, true);
  78                         return;
  79                 }
  80
  81         ELOG("No window with this mark found\n");
  82 }
  83
  84 static void focus_thing(xcb_connection_t *conn, direction_t direction, thing_t thing) {
  85         DLOG("focusing direction %d\n", direction);
  86
  87         int new_row = current_row,
  88             new_col = current_col;
  89         Container *container = CUR_CELL;
  90         Workspace *t_ws = c_ws;
  91
  92         /* Makes sure new_col and new_row are within bounds of the new workspace */
  93 #define CHECK_COLROW_BOUNDARIES \
  94         do { \
  95                 if (new_col >= t_ws->cols) \
  96                         new_col = (t_ws->cols - 1); \
  97                 if (new_row >= t_ws->rows) \
  98                         new_row = (t_ws->rows - 1); \
  99         } while (0)
 100
 101         /* There always is a container. If not, current_col or current_row is wrong */
 102         assert(container != NULL);
 103
 104         if (container->workspace->fullscreen_client != NULL) {
 105                 LOG("You're in fullscreen mode. Forcing focus to operate on whole screens\n");
 106                 thing = THING_SCREEN;
 107         }
 108
 109         /* For focusing screens, situation is different: we get the rect
 110          * of the current screen, then get the screen which is on its
 111          * right/left/bottom/top and just switch to the workspace on
 112          * the target screen. */
 113         if (thing == THING_SCREEN) {
 114                 Output *cs = c_ws->output;
 115                 assert(cs != NULL);
 116                 Rect bounds = cs->rect;
 117
 118                 if (direction == D_RIGHT)
 119                         bounds.x += bounds.width;
 120                 else if (direction == D_LEFT)
 121                         bounds.x -= bounds.width;
 122                 else if (direction == D_UP)
 123                         bounds.y -= bounds.height;
 124                 else bounds.y += bounds.height;
 125
 126                 Output *target = get_output_containing(bounds.x, bounds.y);
 127                 if (target == NULL) {
 128                         DLOG("Target output NULL\n");
 129                         /* Wrap around if the target screen is out of bounds */
 130                         if (direction == D_RIGHT)
 131                                 target = get_output_most(D_LEFT, cs);
 132                         else if (direction == D_LEFT)
 133                                 target = get_output_most(D_RIGHT, cs);
 134                         else if (direction == D_UP)
 135                                 target = get_output_most(D_DOWN, cs);
 136                         else target = get_output_most(D_UP, cs);
 137                 }
 138
 139                 DLOG("Switching to ws %d\n", target->current_workspace + 1);
 140                 workspace_show(conn, target->current_workspace->num + 1);
 141                 return;
 142         }
 143
 144         /* TODO: for horizontal default layout, this has to be expanded to LEFT/RIGHT */
 145         if (direction == D_UP || direction == D_DOWN) {
 146                 if (thing == THING_WINDOW)
 147                         /* Let’s see if we can perform up/down focus in the current container */
 148                         if (focus_window_in_container(conn, container, direction))
 149                                 return;
 150
 151                 if (direction == D_DOWN && cell_exists(t_ws, current_col, current_row+1))
 152                         new_row = current_row + t_ws->table[current_col][current_row]->rowspan;
 153                 else if (direction == D_UP && cell_exists(c_ws, current_col, current_row-1)) {
 154                         /* Set new_row as a sane default, but it may get overwritten in a second */
 155                         new_row--;
 156
 157                         /* Search from the top to correctly handle rowspanned containers */
 158                         for (int rows = 0; rows < current_row; rows += t_ws->table[current_col][rows]->rowspan) {
 159                                 if (new_row > (rows + (t_ws->table[current_col][rows]->rowspan - 1)))
 160                                         continue;
 161
 162                                 new_row = rows;
 163                                 break;
 164                         }
 165                 } else {
 166                         /* Let’s see if there is a screen down/up there to which we can switch */
 167                         DLOG("container is at %d with height %d\n", container->y, container->height);
 168                         Output *output;
 169                         int destination_y = (direction == D_UP ? (container->y - 1) : (container->y + container->height + 1));
 170                         if ((output = get_output_containing(container->x, destination_y)) == NULL) {
 171                                 DLOG("Wrapping screen around vertically\n");
 172                                 /* No screen found? Then wrap */
 173                                 output = get_output_most((direction == D_UP ? D_DOWN : D_UP), container->workspace->output);
 174                         }
 175                         t_ws = output->current_workspace;
 176                         new_row = (direction == D_UP ? (t_ws->rows - 1) : 0);
 177                 }
 178
 179                 CHECK_COLROW_BOUNDARIES;
 180
 181                 DLOG("new_col = %d, new_row = %d\n", new_col, new_row);
 182                 if (t_ws->table[new_col][new_row]->currently_focused == NULL) {
 183                         DLOG("Cell empty, checking for colspanned client above...\n");
 184                         for (int cols = 0; cols < new_col; cols += t_ws->table[cols][new_row]->colspan) {
 185                                 if (new_col > (cols + (t_ws->table[cols][new_row]->colspan - 1)))
 186                                         continue;
 187
 188                                 new_col = cols;
 189                                 DLOG("Fixed it to new col %d\n", new_col);
 190                                 break;
 191                         }
 192                 }
 193
 194                 if (t_ws->table[new_col][new_row]->currently_focused == NULL) {
 195                         DLOG("Cell still empty, checking for full cols above spanned width...\n");
 196                         DLOG("new_col = %d\n", new_col);
 197                         DLOG("colspan = %d\n", container->colspan);
 198                         for (int cols = new_col;
 199                              cols < container->col + container->colspan;
 200                              cols += t_ws->table[cols][new_row]->colspan) {
 201                                 DLOG("candidate: new_row = %d, cols = %d\n", new_row, cols);
 202                                 if (t_ws->table[cols][new_row]->currently_focused == NULL)
 203                                         continue;
 204
 205                                 new_col = cols;
 206                                 DLOG("Fixed it to new col %d\n", new_col);
 207                                 break;
 208                         }
 209                 }
 210         } else if (direction == D_LEFT || direction == D_RIGHT) {
 211                 if (direction == D_RIGHT && cell_exists(t_ws, current_col+1, current_row))
 212                         new_col = current_col + t_ws->table[current_col][current_row]->colspan;
 213                 else if (direction == D_LEFT && cell_exists(t_ws, current_col-1, current_row)) {
 214                         /* Set new_col as a sane default, but it may get overwritten in a second */
 215                         new_col--;
 216
 217                         /* Search from the left to correctly handle colspanned containers */
 218                         for (int cols = 0; cols < current_col; cols += t_ws->table[cols][current_row]->colspan) {
 219                                 if (new_col > (cols + (t_ws->table[cols][current_row]->colspan - 1)))
 220                                         continue;
 221
 222                                 new_col = cols;
 223                                 break;
 224                         }
 225                 } else {
 226                         /* Let’s see if there is a screen left/right here to which we can switch */
 227                         DLOG("container is at %d with width %d\n", container->x, container->width);
 228                         Output *output;
 229                         int destination_x = (direction == D_LEFT ? (container->x - 1) : (container->x + container->width + 1));
 230                         if ((output = get_output_containing(destination_x, container->y)) == NULL) {
 231                                 DLOG("Wrapping screen around horizontally\n");
 232                                 output = get_output_most((direction == D_LEFT ? D_RIGHT : D_LEFT), container->workspace->output);
 233                         }
 234                         t_ws = output->current_workspace;
 235                         new_col = (direction == D_LEFT ? (t_ws->cols - 1) : 0);
 236                 }
 237
 238                 CHECK_COLROW_BOUNDARIES;
 239
 240                 DLOG("new_col = %d, new_row = %d\n", new_col, new_row);
 241                 if (t_ws->table[new_col][new_row]->currently_focused == NULL) {
 242                         DLOG("Cell empty, checking for rowspanned client above...\n");
 243                         for (int rows = 0; rows < new_row; rows += t_ws->table[new_col][rows]->rowspan) {
 244                                 if (new_row > (rows + (t_ws->table[new_col][rows]->rowspan - 1)))
 245                                         continue;
 246
 247                                 new_row = rows;
 248                                 DLOG("Fixed it to new row %d\n", new_row);
 249                                 break;
 250                         }
 251                 }
 252
 253                 if (t_ws->table[new_col][new_row]->currently_focused == NULL) {
 254                         DLOG("Cell still empty, checking for full cols near full spanned height...\n");
 255                         DLOG("new_row = %d\n", new_row);
 256                         DLOG("rowspan = %d\n", container->rowspan);
 257                         for (int rows = new_row;
 258                              rows < container->row + container->rowspan;
 259                              rows += t_ws->table[new_col][rows]->rowspan) {
 260                                 DLOG("candidate: new_col = %d, rows = %d\n", new_col, rows);
 261                                 if (t_ws->table[new_col][rows]->currently_focused == NULL)
 262                                         continue;
 263
 264                                 new_row = rows;
 265                                 DLOG("Fixed it to new col %d\n", new_row);
 266                                 break;
 267                         }
 268                 }
 269
 270         } else {
 271                 ELOG("direction unhandled\n");
 272                 return;
 273         }
 274
 275         CHECK_COLROW_BOUNDARIES;
 276
 277         if (t_ws->table[new_col][new_row]->currently_focused != NULL)
 278                 set_focus(conn, t_ws->table[new_col][new_row]->currently_focused, true);
 279 }
 280
 281 /*
 282  * Tries to move the window inside its current container.
 283  *
 284  * Returns true if the window could be moved, false otherwise.
 285  *
 286  */
 287 static bool move_current_window_in_container(xcb_connection_t *conn, Client *client,
 288                 direction_t direction) {
 289         assert(client->container != NULL);
 290
 291         Client *other = (direction == D_UP ? CIRCLEQ_PREV(client, clients) :
 292                                              CIRCLEQ_NEXT(client, clients));
 293
 294         if (other == CIRCLEQ_END(&(client->container->clients)))
 295                 return false;
 296
 297         DLOG("i can do that\n");
 298         /* We can move the client inside its current container */
 299         CIRCLEQ_REMOVE(&(client->container->clients), client, clients);
 300         if (direction == D_UP)
 301                 CIRCLEQ_INSERT_BEFORE(&(client->container->clients), other, client, clients);
 302         else CIRCLEQ_INSERT_AFTER(&(client->container->clients), other, client, clients);
 303         render_layout(conn);
 304         return true;
 305 }
 306
 307 /*
 308  * Moves the current window or whole container to the given direction, creating a column/row if
 309  * necessary.
 310  *
 311  */
 312 static void move_current_window(xcb_connection_t *conn, direction_t direction) {
 313         LOG("moving window to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" :
 314                                             (direction == D_LEFT ? "left" : "right"))));
 315         /* Get current window */
 316         Container *container = CUR_CELL,
 317                   *new = NULL;
 318
 319         /* There has to be a container, see focus_window() */
 320         assert(container != NULL);
 321
 322         /* If there is no window or the dock window is focused, we’re done */
 323         if (container->currently_focused == NULL ||
 324             container->currently_focused->dock)
 325                 return;
 326
 327         /* As soon as the client is moved away, the last focused client in the old
 328          * container needs to get focus, if any. Therefore, we save it here. */
 329         Client *current_client = container->currently_focused;
 330         Client *to_focus = get_last_focused_client(conn, container, current_client);
 331
 332         if (to_focus == NULL) {
 333                 to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients);
 334                 if (to_focus == NULL)
 335                         to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients);
 336         }
 337
 338         switch (direction) {
 339                 case D_LEFT:
 340                         /* If we’re at the left-most position, move the rest of the table right */
 341                         if (current_col == 0) {
 342                                 expand_table_cols_at_head(c_ws);
 343                                 new = CUR_CELL;
 344                         } else
 345                                 new = CUR_TABLE[--current_col][current_row];
 346                         break;
 347                 case D_RIGHT:
 348                         if (current_col == (c_ws->cols-1))
 349                                 expand_table_cols(c_ws);
 350
 351                         new = CUR_TABLE[++current_col][current_row];
 352                         break;
 353                 case D_UP:
 354                         if (move_current_window_in_container(conn, current_client, D_UP))
 355                                 return;
 356
 357                         /* if we’re at the up-most position, move the rest of the table down */
 358                         if (current_row == 0) {
 359                                 expand_table_rows_at_head(c_ws);
 360                                 new = CUR_CELL;
 361                         } else
 362                                 new = CUR_TABLE[current_col][--current_row];
 363                         break;
 364                 case D_DOWN:
 365                         if (move_current_window_in_container(conn, current_client, D_DOWN))
 366                                 return;
 367
 368                         if (current_row == (c_ws->rows-1))
 369                                 expand_table_rows(c_ws);
 370
 371                         new = CUR_TABLE[current_col][++current_row];
 372                         break;
 373                 /* To make static analyzers happy: */
 374                 default:
 375                         return;
 376         }
 377
 378         /* Remove it from the old container and put it into the new one */
 379         client_remove_from_container(conn, current_client, container, true);
 380
 381         if (new->currently_focused != NULL)
 382                 CIRCLEQ_INSERT_AFTER(&(new->clients), new->currently_focused, current_client, clients);
 383         else CIRCLEQ_INSERT_TAIL(&(new->clients), current_client, clients);
 384         SLIST_INSERT_HEAD(&(new->workspace->focus_stack), current_client, focus_clients);
 385
 386         /* Update data structures */
 387         current_client->container = new;
 388         current_client->workspace = new->workspace;
 389         container->currently_focused = to_focus;
 390         new->currently_focused = current_client;
 391
 392         Workspace *workspace = container->workspace;
 393
 394         /* delete all empty columns/rows */
 395         cleanup_table(conn, workspace);
 396
 397         /* Fix colspan/rowspan if it’d overlap */
 398         fix_colrowspan(conn, workspace);
 399
 400         render_workspace(conn, workspace->output, workspace);
 401         xcb_flush(conn);
 402
 403         set_focus(conn, current_client, true);
 404 }
 405
 406 static void move_current_container(xcb_connection_t *conn, direction_t direction) {
 407         LOG("moving container to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" :
 408                                             (direction == D_LEFT ? "left" : "right"))));
 409         /* Get current window */
 410         Container *container = CUR_CELL,
 411                   *new = NULL;
 412
 413         Container **old = &CUR_CELL;
 414
 415         /* There has to be a container, see focus_window() */
 416         assert(container != NULL);
 417
 418         switch (direction) {
 419                 case D_LEFT:
 420                         /* If we’re at the left-most position, move the rest of the table right */
 421                         if (current_col == 0) {
 422                                 expand_table_cols_at_head(c_ws);
 423                                 new = CUR_CELL;
 424                                 old = &CUR_TABLE[current_col+1][current_row];
 425                         } else
 426                                 new = CUR_TABLE[--current_col][current_row];
 427                         break;
 428                 case D_RIGHT:
 429                         if (current_col == (c_ws->cols-1))
 430                                 expand_table_cols(c_ws);
 431
 432                         new = CUR_TABLE[++current_col][current_row];
 433                         break;
 434                 case D_UP:
 435                         /* if we’re at the up-most position, move the rest of the table down */
 436                         if (current_row == 0) {
 437                                 expand_table_rows_at_head(c_ws);
 438                                 new = CUR_CELL;
 439                                 old = &CUR_TABLE[current_col][current_row+1];
 440                         } else
 441                                 new = CUR_TABLE[current_col][--current_row];
 442                         break;
 443                 case D_DOWN:
 444                         if (current_row == (c_ws->rows-1))
 445                                 expand_table_rows(c_ws);
 446
 447                         new = CUR_TABLE[current_col][++current_row];
 448                         break;
 449                 /* To make static analyzers happy: */
 450                 default:
 451                         return;
 452         }
 453
 454         DLOG("old = %d,%d and new = %d,%d\n", container->col, container->row, new->col, new->row);
 455
 456         /* Swap the containers */
 457         int col = new->col;
 458         int row = new->row;
 459
 460         *old = new;
 461         new->col = container->col;
 462         new->row = container->row;
 463
 464         CUR_CELL = container;
 465         container->col = col;
 466         container->row = row;
 467
 468         Workspace *workspace = container->workspace;
 469
 470         /* delete all empty columns/rows */
 471         cleanup_table(conn, workspace);
 472
 473         /* Fix colspan/rowspan if it’d overlap */
 474         fix_colrowspan(conn, workspace);
 475
 476         render_layout(conn);
 477 }
 478
 479 /*
 480  * "Snaps" the current container (not possible for windows, because it works at table base)
 481  * to the given direction, that is, adjusts cellspan/rowspan
 482  *
 483  */
 484 static void snap_current_container(xcb_connection_t *conn, direction_t direction) {
 485         LOG("snapping container to direction %d\n", direction);
 486
 487         Container *container = CUR_CELL;
 488
 489         assert(container != NULL);
 490
 491         switch (direction) {
 492                 case D_LEFT:
 493                         /* Snap to the left is actually a move to the left and then a snap right */
 494                         if (!cell_exists(container->workspace, container->col - 1, container->row) ||
 495                             CUR_TABLE[container->col-1][container->row]->currently_focused != NULL) {
 496                                 ELOG("cannot snap to left - the cell is already used\n");
 497                                 return;
 498                         }
 499
 500                         move_current_window(conn, D_LEFT);
 501                         snap_current_container(conn, D_RIGHT);
 502                         return;
 503                 case D_RIGHT: {
 504                         /* Check if the cell is used */
 505                         int new_col = container->col + container->colspan;
 506                         for (int i = 0; i < container->rowspan; i++)
 507                                 if (!cell_exists(container->workspace, new_col, container->row + i) ||
 508                                     CUR_TABLE[new_col][container->row + i]->currently_focused != NULL) {
 509                                         ELOG("cannot snap to right - the cell is already used\n");
 510                                         return;
 511                                 }
 512
 513                         /* Check if there are other cells with rowspan, which are in our way.
 514                          * If so, reduce their rowspan. */
 515                         for (int i = container->row-1; i >= 0; i--) {
 516                                 DLOG("we got cell %d, %d with rowspan %d\n",
 517                                                 new_col, i, CUR_TABLE[new_col][i]->rowspan);
 518                                 while ((CUR_TABLE[new_col][i]->rowspan-1) >= (container->row - i))
 519                                         CUR_TABLE[new_col][i]->rowspan--;
 520                                 DLOG("new rowspan = %d\n", CUR_TABLE[new_col][i]->rowspan);
 521                         }
 522
 523                         container->colspan++;
 524                         break;
 525                 }
 526                 case D_UP:
 527                         if (!cell_exists(container->workspace, container->col, container->row - 1) ||
 528                             CUR_TABLE[container->col][container->row-1]->currently_focused != NULL) {
 529                                 ELOG("cannot snap to top - the cell is already used\n");
 530                                 return;
 531                         }
 532
 533                         move_current_window(conn, D_UP);
 534                         snap_current_container(conn, D_DOWN);
 535                         return;
 536                 case D_DOWN: {
 537                         DLOG("snapping down\n");
 538                         int new_row = container->row + container->rowspan;
 539                         for (int i = 0; i < container->colspan; i++)
 540                                 if (!cell_exists(container->workspace, container->col + i, new_row) ||
 541                                     CUR_TABLE[container->col + i][new_row]->currently_focused != NULL) {
 542                                         ELOG("cannot snap down - the cell is already used\n");
 543                                         return;
 544                                 }
 545
 546                         for (int i = container->col-1; i >= 0; i--) {
 547                                 DLOG("we got cell %d, %d with colspan %d\n",
 548                                                 i, new_row, CUR_TABLE[i][new_row]->colspan);
 549                                 while ((CUR_TABLE[i][new_row]->colspan-1) >= (container->col - i))
 550                                         CUR_TABLE[i][new_row]->colspan--;
 551                                 DLOG("new colspan = %d\n", CUR_TABLE[i][new_row]->colspan);
 552
 553                         }
 554
 555                         container->rowspan++;
 556                         break;
 557                 }
 558                 /* To make static analyzers happy: */
 559                 default:
 560                         return;
 561         }
 562
 563         render_layout(conn);
 564 }
 565
 566 static void move_floating_window_to_workspace(xcb_connection_t *conn, Client *client, int workspace) {
 567         /* t_ws (to workspace) is just a container pointer to the workspace we’re switching to */
 568         Workspace *t_ws = workspace_get(workspace-1),
 569                   *old_ws = client->workspace;
 570
 571         LOG("moving floating\n");
 572
 573         workspace_initialize(t_ws, c_ws->output, false);
 574
 575         /* Check if there is already a fullscreen client on the destination workspace and
 576          * stop moving if so. */
 577         if (client->fullscreen && (t_ws->fullscreen_client != NULL)) {
 578                 ELOG("Not moving: Fullscreen client already existing on destination workspace.\n");
 579                 return;
 580         }
 581
 582         floating_assign_to_workspace(client, t_ws);
 583
 584         /* If we’re moving it to an invisible screen, we need to unmap it */
 585         if (!workspace_is_visible(t_ws)) {
 586                 DLOG("This workspace is not visible, unmapping\n");
 587                 client_unmap(conn, client);
 588         } else {
 589                 /* If this is not the case, we move the window to a workspace
 590                  * which is on another screen, so we also need to adjust its
 591                  * coordinates. */
 592                 DLOG("before x = %d, y = %d\n", client->rect.x, client->rect.y);
 593                 uint32_t relative_x = client->rect.x - old_ws->rect.x,
 594                          relative_y = client->rect.y - old_ws->rect.y;
 595                 DLOG("rel_x = %d, rel_y = %d\n", relative_x, relative_y);
 596                 client->rect.x = t_ws->rect.x + relative_x;
 597                 client->rect.y = t_ws->rect.y + relative_y;
 598                 DLOG("after x = %d, y = %d\n", client->rect.x, client->rect.y);
 599                 reposition_client(conn, client);
 600                 xcb_flush(conn);
 601         }
 602
 603         DLOG("done\n");
 604
 605         render_layout(conn);
 606
 607         if (workspace_is_visible(t_ws))
 608                 set_focus(conn, client, true);
 609 }
 610
 611 /*
 612  * Moves the currently selected window to the given workspace
 613  *
 614  */
 615 static void move_current_window_to_workspace(xcb_connection_t *conn, int workspace) {
 616         LOG("Moving current window to workspace %d\n", workspace);
 617
 618         Container *container = CUR_CELL;
 619
 620         assert(container != NULL);
 621
 622         /* t_ws (to workspace) is just a container pointer to the workspace we’re switching to */
 623         Workspace *t_ws = workspace_get(workspace-1);
 624
 625         Client *current_client = container->currently_focused;
 626         if (current_client == NULL) {
 627                 ELOG("No currently focused client in current container.\n");
 628                 return;
 629         }
 630         Client *to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients);
 631         if (to_focus == NULL)
 632                 to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients);
 633
 634         workspace_initialize(t_ws, container->workspace->output, false);
 635         /* Check if there is already a fullscreen client on the destination workspace and
 636          * stop moving if so. */
 637         if (current_client->fullscreen && (t_ws->fullscreen_client != NULL)) {
 638                 ELOG("Not moving: Fullscreen client already existing on destination workspace.\n");
 639                 return;
 640         }
 641
 642         Container *to_container = t_ws->table[t_ws->current_col][t_ws->current_row];
 643
 644         assert(to_container != NULL);
 645
 646         client_remove_from_container(conn, current_client, container, true);
 647         if (container->workspace->fullscreen_client == current_client)
 648                 container->workspace->fullscreen_client = NULL;
 649
 650         /* TODO: insert it to the correct position */
 651         CIRCLEQ_INSERT_TAIL(&(to_container->clients), current_client, clients);
 652
 653         SLIST_INSERT_HEAD(&(to_container->workspace->focus_stack), current_client, focus_clients);
 654         DLOG("Moved.\n");
 655
 656         current_client->container = to_container;
 657         current_client->workspace = to_container->workspace;
 658         container->currently_focused = to_focus;
 659         to_container->currently_focused = current_client;
 660
 661         /* If we’re moving it to an invisible screen, we need to unmap it */
 662         if (!workspace_is_visible(to_container->workspace)) {
 663                 DLOG("This workspace is not visible, unmapping\n");
 664                 client_unmap(conn, current_client);
 665         } else {
 666                 if (current_client->fullscreen) {
 667                         DLOG("Calling client_enter_fullscreen again\n");
 668                         client_enter_fullscreen(conn, current_client, false);
 669                 }
 670         }
 671
 672         /* delete all empty columns/rows */
 673         cleanup_table(conn, container->workspace);
 674
 675         render_layout(conn);
 676
 677         if (workspace_is_visible(to_container->workspace)) {
 678                 client_warp_pointer_into(conn, current_client);
 679                 set_focus(conn, current_client, true);
 680         }
 681 }
 682
 683 /*
 684  * Jumps to the given window class / title.
 685  * Title is matched using strstr, that is, matches if it appears anywhere
 686  * in the string. Regular expressions seem to be a bit overkill here. However,
 687  * if we need them for something else somewhen, we may introduce them here, too.
 688  *
 689  */
 690 static void jump_to_window(xcb_connection_t *conn, const char *arguments) {
 691         char *classtitle;
 692         Client *client;
 693
 694         /* The first character is a quote, this was checked before */
 695         classtitle = sstrdup(arguments+1);
 696         /* The last character is a quote, we just set it to NULL */
 697         classtitle[strlen(classtitle)-1] = '\0';
 698
 699         if ((client = get_matching_client(conn, classtitle, NULL)) == NULL) {
 700                 free(classtitle);
 701                 ELOG("No matching client found.\n");
 702                 return;
 703         }
 704
 705         free(classtitle);
 706         set_focus(conn, client, true);
 707 }
 708
 709 /*
 710  * Jump directly to the specified workspace, row and col.
 711  * Great for reaching windows that you always keep in the same spot (hello irssi, I'm looking at you)
 712  *
 713  */
 714 static void jump_to_container(xcb_connection_t *conn, const char *arguments) {
 715         int ws, row, col;
 716         int result;
 717
 718         result = sscanf(arguments, "%d %d %d", &ws, &col, &row);
 719         LOG("Jump called with %d parameters (\"%s\")\n", result, arguments);
 720
 721         /* No match? Either no arguments were specified, or no numbers */
 722         if (result < 1) {
 723                 ELOG("At least one valid argument required\n");
 724                 return;
 725         }
 726
 727         /* Move to the target workspace */
 728         workspace_show(conn, ws);
 729
 730         if (result < 3)
 731                 return;
 732
 733         DLOG("Boundary-checking col %d, row %d... (max cols %d, max rows %d)\n", col, row, c_ws->cols, c_ws->rows);
 734
 735         /* Move to row/col */
 736         if (row >= c_ws->rows)
 737                 row = c_ws->rows - 1;
 738         if (col >= c_ws->cols)
 739                 col = c_ws->cols - 1;
 740
 741         DLOG("Jumping to col %d, row %d\n", col, row);
 742         if (c_ws->table[col][row]->currently_focused != NULL)
 743                 set_focus(conn, c_ws->table[col][row]->currently_focused, true);
 744 }
 745
 746 /*
 747  * Travels the focus stack by the given number of times (or once, if no argument
 748  * was specified). That is, selects the window you were in before you focused
 749  * the current window.
 750  *
 751  * The special values 'floating' (select the next floating window), 'tiling'
 752  * (select the next tiling window), 'ft' (if the current window is floating,
 753  * select the next tiling window and vice-versa) are also valid
 754  *
 755  */
 756 static void travel_focus_stack(xcb_connection_t *conn, const char *arguments) {
 757         /* Start count at -1 to always skip the first element */
 758         int times, count = -1;
 759         Client *current;
 760         bool floating_criteria;
 761
 762         /* Either it’s one of the special values… */
 763         if (strcasecmp(arguments, "floating") == 0) {
 764                 floating_criteria = true;
 765         } else if (strcasecmp(arguments, "tiling") == 0) {
 766                 floating_criteria = false;
 767         } else if (strcasecmp(arguments, "ft") == 0) {
 768                 Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
 769                 if (last_focused == SLIST_END(&(c_ws->focus_stack))) {
 770                         ELOG("Cannot select the next floating/tiling client because there is no client at all\n");
 771                         return;
 772                 }
 773
 774                 floating_criteria = !client_is_floating(last_focused);
 775         } else {
 776                 /* …or a number was specified */
 777                 if (sscanf(arguments, "%u", &times) != 1) {
 778                         ELOG("No or invalid argument given (\"%s\"), using default of 1 times\n", arguments);
 779                         times = 1;
 780                 }
 781
 782                 SLIST_FOREACH(current, &(CUR_CELL->workspace->focus_stack), focus_clients) {
 783                         if (++count < times) {
 784                                 DLOG("Skipping\n");
 785                                 continue;
 786                         }
 787
 788                         DLOG("Focussing\n");
 789                         set_focus(conn, current, true);
 790                         break;
 791                 }
 792                 return;
 793         }
 794
 795         /* Select the next client matching the criteria parsed above */
 796         SLIST_FOREACH(current, &(CUR_CELL->workspace->focus_stack), focus_clients)
 797                 if (client_is_floating(current) == floating_criteria) {
 798                         set_focus(conn, current, true);
 799                         break;
 800                 }
 801 }
 802
 803 /*
 804  * Switch to next or previous existing workspace
 805  *
 806  */
 807 static void next_previous_workspace(xcb_connection_t *conn, int direction) {
 808         Workspace *ws = c_ws;
 809
 810         if (direction == 'n') {
 811                 while (1) {
 812                         ws = TAILQ_NEXT(ws, workspaces);
 813
 814                         if (ws == TAILQ_END(workspaces))
 815                                 ws = TAILQ_FIRST(workspaces);
 816
 817                         if (ws == c_ws)
 818                                 return;
 819
 820                         if (ws->output == NULL)
 821                                 continue;
 822
 823                         workspace_show(conn, ws->num + 1);
 824                         return;
 825                 }
 826         } else if (direction == 'p') {
 827                 while (1) {
 828                         ws = TAILQ_PREV(ws, workspaces_head, workspaces);
 829
 830                         if (ws == TAILQ_END(workspaces))
 831                                 ws = TAILQ_LAST(workspaces, workspaces_head);
 832
 833                         if (ws == c_ws)
 834                                 return;
 835
 836                         if (ws->output == NULL)
 837                                 continue;
 838
 839                         workspace_show(conn, ws->num + 1);
 840                         return;
 841                 }
 842         }
 843 }
 844
 845 static void parse_resize_command(xcb_connection_t *conn, Client *last_focused, const char *command) {
 846         int first, second;
 847         resize_orientation_t orientation = O_VERTICAL;
 848         Container *con = last_focused->container;
 849         Workspace *ws = last_focused->workspace;
 850
 851         if (client_is_floating(last_focused)) {
 852                 DLOG("Resizing a floating client\n");
 853                 if (STARTS_WITH(command, "left")) {
 854                         command += strlen("left");
 855                         last_focused->rect.width += atoi(command);
 856                         last_focused->rect.x -= atoi(command);
 857                 } else if (STARTS_WITH(command, "right")) {
 858                         command += strlen("right");
 859                         last_focused->rect.width += atoi(command);
 860                 } else if (STARTS_WITH(command, "top")) {
 861                         command += strlen("top");
 862                         last_focused->rect.height += atoi(command);
 863                         last_focused->rect.y -= atoi(command);
 864                 } else if (STARTS_WITH(command, "bottom")) {
 865                         command += strlen("bottom");
 866                         last_focused->rect.height += atoi(command);
 867                 } else {
 868                         ELOG("Syntax: resize <left|right|top|bottom> [+|-]<pixels>\n");
 869                         return;
 870                 }
 871
 872                 /* resize_client flushes */
 873                 resize_client(conn, last_focused);
 874
 875                 return;
 876         }
 877
 878         if (STARTS_WITH(command, "left")) {
 879                 if (con->col == 0)
 880                         return;
 881                 first = con->col - 1;
 882                 second = con->col;
 883                 command += strlen("left");
 884         } else if (STARTS_WITH(command, "right")) {
 885                 first = con->col + (con->colspan - 1);
 886                 DLOG("column %d\n", first);
 887
 888                 if (!cell_exists(ws, first, con->row) ||
 889                     (first == (ws->cols-1)))
 890                         return;
 891
 892                 second = first + 1;
 893                 command += strlen("right");
 894         } else if (STARTS_WITH(command, "top")) {
 895                 if (con->row == 0)
 896                         return;
 897                 first = con->row - 1;
 898                 second = con->row;
 899                 orientation = O_HORIZONTAL;
 900                 command += strlen("top");
 901         } else if (STARTS_WITH(command, "bottom")) {
 902                 first = con->row + (con->rowspan - 1);
 903                 if (!cell_exists(ws, con->col, first) ||
 904                     (first == (ws->rows-1)))
 905                         return;
 906
 907                 second = first + 1;
 908                 orientation = O_HORIZONTAL;
 909                 command += strlen("bottom");
 910         } else {
 911                 ELOG("Syntax: resize <left|right|top|bottom> [+|-]<pixels>\n");
 912                 return;
 913         }
 914
 915         int pixels = atoi(command);
 916         if (pixels == 0)
 917                 return;
 918
 919         resize_container(conn, ws, first, second, orientation, pixels);
 920 }
 921
 922 /*
 923  * Parses a command, see file CMDMODE for more information
 924  *
 925  */
 926 void parse_command(xcb_connection_t *conn, const char *command) {
 927         LOG("--- parsing command \"%s\" ---\n", command);
 928         /* Get the first client from focus stack because floating clients are not
 929          * in any container, therefore CUR_CELL is not appropriate. */
 930         Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
 931         if (last_focused == SLIST_END(&(c_ws->focus_stack)))
 932                 last_focused = NULL;
 933
 934         /* Hmm, just to be sure */
 935         if (command[0] == '\0')
 936                 return;
 937
 938         /* Is it an <exec>? Then execute the given command. */
 939         if (STARTS_WITH(command, "exec ")) {
 940                 LOG("starting \"%s\"\n", command + strlen("exec "));
 941                 start_application(command+strlen("exec "));
 942                 return;
 943         }
 944
 945         if (STARTS_WITH(command, "mark")) {
 946                 if (last_focused == NULL) {
 947                         ELOG("There is no window to mark\n");
 948                         return;
 949                 }
 950                 const char *rest = command + strlen("mark");
 951                 while (*rest == ' ')
 952                         rest++;
 953                 if (*rest == '\0') {
 954                         DLOG("interactive mark starting\n");
 955                         start_application("i3-input -p 'mark ' -l 1 -P 'Mark: '");
 956                 } else {
 957                         LOG("mark with \"%s\"\n", rest);
 958                         client_mark(conn, last_focused, rest);
 959                 }
 960                 return;
 961         }
 962
 963         if (STARTS_WITH(command, "goto")) {
 964                 const char *rest = command + strlen("goto");
 965                 while (*rest == ' ')
 966                         rest++;
 967                 if (*rest == '\0') {
 968                         DLOG("interactive go to mark starting\n");
 969                         start_application("i3-input -p 'goto ' -l 1 -P 'Goto: '");
 970                 } else {
 971                         LOG("go to \"%s\"\n", rest);
 972                         jump_to_mark(conn, rest);
 973                 }
 974                 return;
 975         }
 976
 977         if (STARTS_WITH(command, "stack-limit ")) {
 978                 if (last_focused == NULL || client_is_floating(last_focused)) {
 979                         ELOG("No container focused\n");
 980                         return;
 981                 }
 982                 const char *rest = command + strlen("stack-limit ");
 983                 if (strncmp(rest, "rows ", strlen("rows ")) == 0) {
 984                         last_focused->container->stack_limit = STACK_LIMIT_ROWS;
 985                         rest += strlen("rows ");
 986                 } else if (strncmp(rest, "cols ", strlen("cols ")) == 0) {
 987                         last_focused->container->stack_limit = STACK_LIMIT_COLS;
 988                         rest += strlen("cols ");
 989                 } else {
 990                         ELOG("Syntax: stack-limit <cols|rows> <limit>\n");
 991                         return;
 992                 }
 993
 994                 last_focused->container->stack_limit_value = atoi(rest);
 995                 if (last_focused->container->stack_limit_value == 0)
 996                         last_focused->container->stack_limit = STACK_LIMIT_NONE;
 997
 998                 return;
 999         }
1000
1001         if (STARTS_WITH(command, "resize ")) {
1002                 if (last_focused == NULL)
1003                         return;
1004                 const char *rest = command + strlen("resize ");
1005                 parse_resize_command(conn, last_focused, rest);
1006                 return;
1007         }
1008
1009         if (STARTS_WITH(command, "mode ")) {
1010                 const char *rest = command + strlen("mode ");
1011                 switch_mode(conn, rest);
1012                 return;
1013         }
1014
1015         /* Is it an <exit>? */
1016         if (STARTS_WITH(command, "exit")) {
1017                 LOG("User issued exit-command, exiting without error.\n");
1018                 restore_geometry(global_conn);
1019                 ipc_shutdown();
1020                 exit(EXIT_SUCCESS);
1021         }
1022
1023         /* Is it a <reload>? */
1024         if (STARTS_WITH(command, "reload")) {
1025                 load_configuration(conn, NULL, true);
1026                 return;
1027         }
1028
1029         /* Is it <restart>? Then restart in place. */
1030         if (STARTS_WITH(command, "restart")) {
1031                 i3_restart();
1032         }
1033
1034         if (STARTS_WITH(command, "kill")) {
1035                 if (last_focused == NULL) {
1036                         ELOG("There is no window to kill\n");
1037                         return;
1038                 }
1039
1040                 LOG("Killing current window\n");
1041                 client_kill(conn, last_focused);
1042                 return;
1043         }
1044
1045         /* Is it a jump to a specified workspace, row, col? */
1046         if (STARTS_WITH(command, "jump ")) {
1047                 const char *arguments = command + strlen("jump ");
1048                 if (arguments[0] == '"')
1049                         jump_to_window(conn, arguments);
1050                 else jump_to_container(conn, arguments);
1051                 return;
1052         }
1053
1054         /* Should we travel the focus stack? */
1055         if (STARTS_WITH(command, "focus")) {
1056                 const char *arguments = command + strlen("focus ");
1057                 travel_focus_stack(conn, arguments);
1058                 return;
1059         }
1060
1061         /* Is it 'f' for fullscreen, or 'fg' for fullscreen_global? */
1062         if (command[0] == 'f') {
1063                 if (last_focused == NULL)
1064                         return;
1065                 if (command[1] == 'g')
1066                         client_toggle_fullscreen_global(conn, last_focused);
1067                 else
1068                         client_toggle_fullscreen(conn, last_focused);
1069                 return;
1070         }
1071
1072         /* Is it just 's' for stacking or 'd' for default? */
1073         if ((command[0] == 's' || command[0] == 'd' || command[0] == 'T') && (command[1] == '\0')) {
1074                 if (last_focused != NULL && client_is_floating(last_focused)) {
1075                         ELOG("not switching, this is a floating client\n");
1076                         return;
1077                 }
1078                 LOG("Switching mode for current container\n");
1079                 int new_mode = MODE_DEFAULT;
1080                 if (command[0] == 's' && CUR_CELL->mode != MODE_STACK)
1081                         new_mode = MODE_STACK;
1082                 if (command[0] == 'T' && CUR_CELL->mode != MODE_TABBED)
1083                         new_mode = MODE_TABBED;
1084                 switch_layout_mode(conn, CUR_CELL, new_mode);
1085                 return;
1086         }
1087
1088         /* Is it 'bn' (border normal), 'bp' (border 1pixel) or 'bb' (border borderless)? */
1089         /* or even 'bt' (toggle border: 'bp' -> 'bb' -> 'bn' ) */
1090         if (command[0] == 'b') {
1091                 if (last_focused == NULL) {
1092                         ELOG("No window focused, cannot change border type\n");
1093                         return;
1094                 }
1095
1096                 char com = command[1];
1097                 if (command[1] == 't') {
1098                         if (last_focused->titlebar_position == TITLEBAR_TOP &&
1099                             !last_focused->borderless)
1100                             com = 'p';
1101                         else if (last_focused->titlebar_position == TITLEBAR_OFF &&
1102                                  !last_focused->borderless)
1103                             com = 'b';
1104                         else com = 'n';
1105                 }
1106
1107                 client_change_border(conn, last_focused, com);
1108                 return;
1109         }
1110
1111         if (command[0] == 'H') {
1112                 LOG("Hiding all floating windows\n");
1113                 floating_toggle_hide(conn, c_ws);
1114                 return;
1115         }
1116
1117         enum { WITH_WINDOW, WITH_CONTAINER, WITH_WORKSPACE, WITH_SCREEN } with = WITH_WINDOW;
1118
1119         /* Is it a <with>? */
1120         if (command[0] == 'w') {
1121                 command++;
1122                 /* TODO: implement */
1123                 if (command[0] == 'c') {
1124                         with = WITH_CONTAINER;
1125                         command++;
1126                 } else if (command[0] == 'w') {
1127                         with = WITH_WORKSPACE;
1128                         command++;
1129                 } else if (command[0] == 's') {
1130                         with = WITH_SCREEN;
1131                         command++;
1132                 } else {
1133                         ELOG("not yet implemented.\n");
1134                         return;
1135                 }
1136         }
1137
1138         /* Is it 't' for toggle tiling/floating? */
1139         if (command[0] == 't') {
1140                 if (with == WITH_WORKSPACE) {
1141                         c_ws->auto_float = !c_ws->auto_float;
1142                         LOG("autofloat is now %d\n", c_ws->auto_float);
1143                         return;
1144                 }
1145                 if (last_focused == NULL) {
1146                         ELOG("Cannot toggle tiling/floating: workspace empty\n");
1147                         return;
1148                 }
1149
1150                 Workspace *ws = last_focused->workspace;
1151
1152                 toggle_floating_mode(conn, last_focused, false);
1153                 /* delete all empty columns/rows */
1154                 cleanup_table(conn, ws);
1155
1156                 /* Fix colspan/rowspan if it’d overlap */
1157                 fix_colrowspan(conn, ws);
1158
1159                 render_workspace(conn, ws->output, ws);
1160
1161                 /* Re-focus the client because cleanup_table sets the focus to the last
1162                  * focused client inside a container only. */
1163                 set_focus(conn, last_focused, true);
1164
1165                 return;
1166         }
1167
1168         /* Is it 'n' or 'p' for next/previous workspace? (nw) */
1169         if ((command[0] == 'n' || command[0] == 'p') && command[1] == 'w') {
1170                next_previous_workspace(conn, command[0]);
1171                return;
1172         }
1173
1174         /* It’s a normal <cmd> */
1175         char *rest = NULL;
1176         enum { ACTION_FOCUS, ACTION_MOVE, ACTION_SNAP } action = ACTION_FOCUS;
1177         direction_t direction;
1178         int times = strtol(command, &rest, 10);
1179         if (rest == NULL) {
1180                 ELOG("Invalid command (\"%s\")\n", command);
1181                 return;
1182         }
1183
1184         if (*rest == '\0') {
1185                 /* No rest? This was a workspace number, not a times specification */
1186                 workspace_show(conn, times);
1187                 return;
1188         }
1189
1190         if (*rest == 'm' || *rest == 's') {
1191                 action = (*rest == 'm' ? ACTION_MOVE : ACTION_SNAP);
1192                 rest++;
1193         }
1194
1195         int workspace = strtol(rest, &rest, 10);
1196
1197         if (rest == NULL) {
1198                 ELOG("Invalid command (\"%s\")\n", command);
1199                 return;
1200         }
1201
1202         if (*rest == '\0') {
1203                 if (last_focused != NULL && client_is_floating(last_focused))
1204                         move_floating_window_to_workspace(conn, last_focused, workspace);
1205                 else move_current_window_to_workspace(conn, workspace);
1206                 return;
1207         }
1208
1209         if (last_focused == NULL) {
1210                 ELOG("Not performing (no window found)\n");
1211                 return;
1212         }
1213
1214         if (client_is_floating(last_focused) &&
1215             (action != ACTION_FOCUS && action != ACTION_MOVE)) {
1216                 ELOG("Not performing (floating)\n");
1217                 return;
1218         }
1219
1220         /* Now perform action to <where> */
1221         while (*rest != '\0') {
1222                 if (*rest == 'h')
1223                         direction = D_LEFT;
1224                 else if (*rest == 'j')
1225                         direction = D_DOWN;
1226                 else if (*rest == 'k')
1227                         direction = D_UP;
1228                 else if (*rest == 'l')
1229                         direction = D_RIGHT;
1230                 else {
1231                         ELOG("unknown direction: %c\n", *rest);
1232                         return;
1233                 }
1234                 rest++;
1235
1236                 if (action == ACTION_FOCUS) {
1237                         if (with == WITH_SCREEN) {
1238                                 focus_thing(conn, direction, THING_SCREEN);
1239                                 continue;
1240                         }
1241                         if (client_is_floating(last_focused)) {
1242                                 floating_focus_direction(conn, last_focused, direction);
1243                                 continue;
1244                         }
1245                         focus_thing(conn, direction, (with == WITH_WINDOW ? THING_WINDOW : THING_CONTAINER));
1246                         continue;
1247                 }
1248
1249                 if (action == ACTION_MOVE) {
1250                         if (with == WITH_SCREEN) {
1251                                 /* TODO: this should swap the screen’s contents
1252                                  * (e.g. all workspaces) with the next/previous/…
1253                                  * screen */
1254                                 ELOG("Not yet implemented\n");
1255                                 continue;
1256                         }
1257                         if (client_is_floating(last_focused)) {
1258                                 floating_move(conn, last_focused, direction);
1259                                 continue;
1260                         }
1261                         if (with == WITH_WINDOW)
1262                                 move_current_window(conn, direction);
1263                         else move_current_container(conn, direction);
1264                         continue;
1265                 }
1266
1267                 if (action == ACTION_SNAP) {
1268                         if (with == WITH_SCREEN) {
1269                                 ELOG("You cannot snap a screen (it makes no sense).\n");
1270                                 continue;
1271                         }
1272                         snap_current_container(conn, direction);
1273                         continue;
1274                 }
1275         }
1276 }