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
  34 bool focus_window_in_container(xcb_connection_t *conn, Container *container, direction_t direction) {
  35         /* If this container is empty, we’re done */
  36         if (container->currently_focused == NULL)
  37                 return false;
  38
  39         /* Get the previous/next client or wrap around */
  40         Client *candidate = NULL;
  41         if (direction == D_UP) {
  42                 if ((candidate = CIRCLEQ_PREV_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL)
  43                         candidate = CIRCLEQ_LAST(&(container->clients));
  44         }
  45         else if (direction == D_DOWN) {
  46                 if ((candidate = CIRCLEQ_NEXT_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL)
  47                         candidate = CIRCLEQ_FIRST(&(container->clients));
  48         } else LOG("Direction not implemented!\n");
  49
  50         /* If we could not switch, the container contains exactly one client. We return false */
  51         if (candidate == container->currently_focused)
  52                 return false;
  53
  54         /* Set focus */
  55         set_focus(conn, candidate, true);
  56
  57         return true;
  58 }
  59
  60 typedef enum { THING_WINDOW, THING_CONTAINER, THING_SCREEN } thing_t;
  61
  62 static void jump_to_mark(xcb_connection_t *conn, const char *mark) {
  63         Client *current;
  64         LOG("Jumping to \"%s\"\n", mark);
  65
  66         Workspace *ws;
  67         TAILQ_FOREACH(ws, workspaces, workspaces)
  68                 SLIST_FOREACH(current, &(ws->focus_stack), focus_clients) {
  69                         if (current->mark == NULL || strcmp(current->mark, mark) != 0)
  70                                 continue;
  71
  72                         set_focus(conn, current, true);
  73                         return;
  74                 }
  75
  76         LOG("No window with this mark found\n");
  77 }
  78
  79 static void focus_thing(xcb_connection_t *conn, direction_t direction, thing_t thing) {
  80         LOG("focusing direction %d\n", direction);
  81
  82         int new_row = current_row,
  83             new_col = current_col;
  84         Container *container = CUR_CELL;
  85         Workspace *t_ws = c_ws;
  86
  87         /* Makes sure new_col and new_row are within bounds of the new workspace */
  88         void check_colrow_boundaries() {
  89                 if (new_col >= t_ws->cols)
  90                         new_col = (t_ws->cols - 1);
  91                 if (new_row >= t_ws->rows)
  92                         new_row = (t_ws->rows - 1);
  93         }
  94
  95         /* There always is a container. If not, current_col or current_row is wrong */
  96         assert(container != NULL);
  97
  98         if (container->workspace->fullscreen_client != NULL) {
  99                 LOG("You're in fullscreen mode. Won't switch focus\n");
 100                 return;
 101         }
 102
 103         /* For focusing screens, situation is different: we get the rect
 104          * of the current screen, then get the screen which is on its
 105          * right/left/bottom/top and just switch to the workspace on
 106          * the target screen. */
 107         if (thing == THING_SCREEN) {
 108                 i3Screen *cs = c_ws->screen;
 109                 assert(cs != NULL);
 110                 Rect bounds = cs->rect;
 111
 112                 if (direction == D_RIGHT)
 113                         bounds.x += bounds.width;
 114                 else if (direction == D_LEFT)
 115                         bounds.x -= bounds.width;
 116                 else if (direction == D_UP)
 117                         bounds.y -= bounds.height;
 118                 else bounds.y += bounds.height;
 119
 120                 i3Screen *target = get_screen_containing(bounds.x, bounds.y);
 121                 if (target == NULL) {
 122                         LOG("Target screen NULL\n");
 123                         /* Wrap around if the target screen is out of bounds */
 124                         if (direction == D_RIGHT)
 125                                 target = get_screen_most(D_LEFT, cs);
 126                         else if (direction == D_LEFT)
 127                                 target = get_screen_most(D_RIGHT, cs);
 128                         else if (direction == D_UP)
 129                                 target = get_screen_most(D_DOWN, cs);
 130                         else target = get_screen_most(D_UP, cs);
 131                 }
 132
 133                 LOG("Switching to ws %d\n", target->current_workspace + 1);
 134                 workspace_show(conn, target->current_workspace->num + 1);
 135                 return;
 136         }
 137
 138         /* TODO: for horizontal default layout, this has to be expanded to LEFT/RIGHT */
 139         if (direction == D_UP || direction == D_DOWN) {
 140                 if (thing == THING_WINDOW)
 141                         /* Let’s see if we can perform up/down focus in the current container */
 142                         if (focus_window_in_container(conn, container, direction))
 143                                 return;
 144
 145                 if (direction == D_DOWN && cell_exists(current_col, current_row+1))
 146                         new_row = current_row + t_ws->table[current_col][current_row]->rowspan;
 147                 else if (direction == D_UP && cell_exists(current_col, current_row-1)) {
 148                         /* Set new_row as a sane default, but it may get overwritten in a second */
 149                         new_row--;
 150
 151                         /* Search from the top to correctly handle rowspanned containers */
 152                         for (int rows = 0; rows < current_row; rows += t_ws->table[current_col][rows]->rowspan) {
 153                                 if (new_row > (rows + (t_ws->table[current_col][rows]->rowspan - 1)))
 154                                         continue;
 155
 156                                 new_row = rows;
 157                                 break;
 158                         }
 159                 } else {
 160                         /* Let’s see if there is a screen down/up there to which we can switch */
 161                         LOG("container is at %d with height %d\n", container->y, container->height);
 162                         i3Screen *screen;
 163                         int destination_y = (direction == D_UP ? (container->y - 1) : (container->y + container->height + 1));
 164                         if ((screen = get_screen_containing(container->x, destination_y)) == NULL) {
 165                                 LOG("Wrapping screen around vertically\n");
 166                                 /* No screen found? Then wrap */
 167                                 screen = get_screen_most((direction == D_UP ? D_DOWN : D_UP), container->workspace->screen);
 168                         }
 169                         t_ws = screen->current_workspace;
 170                         new_row = (direction == D_UP ? (t_ws->rows - 1) : 0);
 171                 }
 172
 173                 check_colrow_boundaries();
 174
 175                 LOG("new_col = %d, new_row = %d\n", new_col, new_row);
 176                 if (t_ws->table[new_col][new_row]->currently_focused == NULL) {
 177                         LOG("Cell empty, checking for colspanned client above...\n");
 178                         for (int cols = 0; cols < new_col; cols += t_ws->table[cols][new_row]->colspan) {
 179                                 if (new_col > (cols + (t_ws->table[cols][new_row]->colspan - 1)))
 180                                         continue;
 181
 182                                 new_col = cols;
 183                                 break;
 184                         }
 185                         LOG("Fixed it to new col %d\n", new_col);
 186                 }
 187         } else if (direction == D_LEFT || direction == D_RIGHT) {
 188                 if (direction == D_RIGHT && cell_exists(current_col+1, current_row))
 189                         new_col = current_col + t_ws->table[current_col][current_row]->colspan;
 190                 else if (direction == D_LEFT && cell_exists(current_col-1, current_row)) {
 191                         /* Set new_col as a sane default, but it may get overwritten in a second */
 192                         new_col--;
 193
 194                         /* Search from the left to correctly handle colspanned containers */
 195                         for (int cols = 0; cols < current_col; cols += t_ws->table[cols][current_row]->colspan) {
 196                                 if (new_col > (cols + (t_ws->table[cols][current_row]->colspan - 1)))
 197                                         continue;
 198
 199                                 new_col = cols;
 200                                 break;
 201                         }
 202                 } else {
 203                         /* Let’s see if there is a screen left/right here to which we can switch */
 204                         LOG("container is at %d with width %d\n", container->x, container->width);
 205                         i3Screen *screen;
 206                         int destination_x = (direction == D_LEFT ? (container->x - 1) : (container->x + container->width + 1));
 207                         if ((screen = get_screen_containing(destination_x, container->y)) == NULL) {
 208                                 LOG("Wrapping screen around horizontally\n");
 209                                 screen = get_screen_most((direction == D_LEFT ? D_RIGHT : D_LEFT), container->workspace->screen);
 210                         }
 211                         t_ws = screen->current_workspace;
 212                         new_col = (direction == D_LEFT ? (t_ws->cols - 1) : 0);
 213                 }
 214
 215                 check_colrow_boundaries();
 216
 217                 LOG("new_col = %d, new_row = %d\n", new_col, new_row);
 218                 if (t_ws->table[new_col][new_row]->currently_focused == NULL) {
 219                         LOG("Cell empty, checking for rowspanned client above...\n");
 220                         for (int rows = 0; rows < new_row; rows += t_ws->table[new_col][rows]->rowspan) {
 221                                 if (new_row > (rows + (t_ws->table[new_col][rows]->rowspan - 1)))
 222                                         continue;
 223
 224                                 new_row = rows;
 225                                 break;
 226                         }
 227                         LOG("Fixed it to new row %d\n", new_row);
 228                 }
 229         } else {
 230                 LOG("direction unhandled\n");
 231                 return;
 232         }
 233
 234         check_colrow_boundaries();
 235
 236         if (t_ws->table[new_col][new_row]->currently_focused != NULL)
 237                 set_focus(conn, t_ws->table[new_col][new_row]->currently_focused, true);
 238 }
 239
 240 /*
 241  * Tries to move the window inside its current container.
 242  *
 243  * Returns true if the window could be moved, false otherwise.
 244  *
 245  */
 246 static bool move_current_window_in_container(xcb_connection_t *conn, Client *client,
 247                 direction_t direction) {
 248         assert(client->container != NULL);
 249
 250         Client *other = (direction == D_UP ? CIRCLEQ_PREV(client, clients) :
 251                                              CIRCLEQ_NEXT(client, clients));
 252
 253         if (other == CIRCLEQ_END(&(client->container->clients)))
 254                 return false;
 255
 256         LOG("i can do that\n");
 257         /* We can move the client inside its current container */
 258         CIRCLEQ_REMOVE(&(client->container->clients), client, clients);
 259         if (direction == D_UP)
 260                 CIRCLEQ_INSERT_BEFORE(&(client->container->clients), other, client, clients);
 261         else CIRCLEQ_INSERT_AFTER(&(client->container->clients), other, client, clients);
 262         render_layout(conn);
 263         return true;
 264 }
 265
 266 /*
 267  * Moves the current window or whole container to the given direction, creating a column/row if
 268  * necessary.
 269  *
 270  */
 271 static void move_current_window(xcb_connection_t *conn, direction_t direction) {
 272         LOG("moving window to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" :
 273                                             (direction == D_LEFT ? "left" : "right"))));
 274         /* Get current window */
 275         Container *container = CUR_CELL,
 276                   *new = NULL;
 277
 278         /* There has to be a container, see focus_window() */
 279         assert(container != NULL);
 280
 281         /* If there is no window or the dock window is focused, we’re done */
 282         if (container->currently_focused == NULL ||
 283             container->currently_focused->dock)
 284                 return;
 285
 286         /* As soon as the client is moved away, the last focused client in the old
 287          * container needs to get focus, if any. Therefore, we save it here. */
 288         Client *current_client = container->currently_focused;
 289         Client *to_focus = get_last_focused_client(conn, container, current_client);
 290
 291         if (to_focus == NULL) {
 292                 to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients);
 293                 if (to_focus == NULL)
 294                         to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients);
 295         }
 296
 297         switch (direction) {
 298                 case D_LEFT:
 299                         /* If we’re at the left-most position, move the rest of the table right */
 300                         if (current_col == 0) {
 301                                 expand_table_cols_at_head(c_ws);
 302                                 new = CUR_CELL;
 303                         } else
 304                                 new = CUR_TABLE[--current_col][current_row];
 305                         break;
 306                 case D_RIGHT:
 307                         if (current_col == (c_ws->cols-1))
 308                                 expand_table_cols(c_ws);
 309
 310                         new = CUR_TABLE[++current_col][current_row];
 311                         break;
 312                 case D_UP:
 313                         if (move_current_window_in_container(conn, current_client, D_UP))
 314                                 return;
 315
 316                         /* if we’re at the up-most position, move the rest of the table down */
 317                         if (current_row == 0) {
 318                                 expand_table_rows_at_head(c_ws);
 319                                 new = CUR_CELL;
 320                         } else
 321                                 new = CUR_TABLE[current_col][--current_row];
 322                         break;
 323                 case D_DOWN:
 324                         if (move_current_window_in_container(conn, current_client, D_DOWN))
 325                                 return;
 326
 327                         if (current_row == (c_ws->rows-1))
 328                                 expand_table_rows(c_ws);
 329
 330                         new = CUR_TABLE[current_col][++current_row];
 331                         break;
 332                 /* To make static analyzers happy: */
 333                 default:
 334                         return;
 335         }
 336
 337         /* Remove it from the old container and put it into the new one */
 338         client_remove_from_container(conn, current_client, container, true);
 339
 340         if (new->currently_focused != NULL)
 341                 CIRCLEQ_INSERT_AFTER(&(new->clients), new->currently_focused, current_client, clients);
 342         else CIRCLEQ_INSERT_TAIL(&(new->clients), current_client, clients);
 343         SLIST_INSERT_HEAD(&(new->workspace->focus_stack), current_client, focus_clients);
 344
 345         /* Update data structures */
 346         current_client->container = new;
 347         current_client->workspace = new->workspace;
 348         container->currently_focused = to_focus;
 349         new->currently_focused = current_client;
 350
 351         Workspace *workspace = container->workspace;
 352
 353         /* delete all empty columns/rows */
 354         cleanup_table(conn, workspace);
 355
 356         /* Fix colspan/rowspan if it’d overlap */
 357         fix_colrowspan(conn, workspace);
 358
 359         render_workspace(conn, workspace->screen, workspace);
 360         xcb_flush(conn);
 361
 362         set_focus(conn, current_client, true);
 363 }
 364
 365 static void move_current_container(xcb_connection_t *conn, direction_t direction) {
 366         LOG("moving container to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" :
 367                                             (direction == D_LEFT ? "left" : "right"))));
 368         /* Get current window */
 369         Container *container = CUR_CELL,
 370                   *new = NULL;
 371
 372         Container **old = &CUR_CELL;
 373
 374         /* There has to be a container, see focus_window() */
 375         assert(container != NULL);
 376
 377         switch (direction) {
 378                 case D_LEFT:
 379                         /* If we’re at the left-most position, move the rest of the table right */
 380                         if (current_col == 0) {
 381                                 expand_table_cols_at_head(c_ws);
 382                                 new = CUR_CELL;
 383                                 old = &CUR_TABLE[current_col+1][current_row];
 384                         } else
 385                                 new = CUR_TABLE[--current_col][current_row];
 386                         break;
 387                 case D_RIGHT:
 388                         if (current_col == (c_ws->cols-1))
 389                                 expand_table_cols(c_ws);
 390
 391                         new = CUR_TABLE[++current_col][current_row];
 392                         break;
 393                 case D_UP:
 394                         /* if we’re at the up-most position, move the rest of the table down */
 395                         if (current_row == 0) {
 396                                 expand_table_rows_at_head(c_ws);
 397                                 new = CUR_CELL;
 398                                 old = &CUR_TABLE[current_col][current_row+1];
 399                         } else
 400                                 new = CUR_TABLE[current_col][--current_row];
 401                         break;
 402                 case D_DOWN:
 403                         if (current_row == (c_ws->rows-1))
 404                                 expand_table_rows(c_ws);
 405
 406                         new = CUR_TABLE[current_col][++current_row];
 407                         break;
 408                 /* To make static analyzers happy: */
 409                 default:
 410                         return;
 411         }
 412
 413         LOG("old = %d,%d and new = %d,%d\n", container->col, container->row, new->col, new->row);
 414
 415         /* Swap the containers */
 416         int col = new->col;
 417         int row = new->row;
 418
 419         *old = new;
 420         new->col = container->col;
 421         new->row = container->row;
 422
 423         CUR_CELL = container;
 424         container->col = col;
 425         container->row = row;
 426
 427         Workspace *workspace = container->workspace;
 428
 429         /* delete all empty columns/rows */
 430         cleanup_table(conn, workspace);
 431
 432         /* Fix colspan/rowspan if it’d overlap */
 433         fix_colrowspan(conn, workspace);
 434
 435         render_layout(conn);
 436 }
 437
 438 /*
 439  * "Snaps" the current container (not possible for windows, because it works at table base)
 440  * to the given direction, that is, adjusts cellspan/rowspan
 441  *
 442  */
 443 static void snap_current_container(xcb_connection_t *conn, direction_t direction) {
 444         LOG("snapping container to direction %d\n", direction);
 445
 446         Container *container = CUR_CELL;
 447
 448         assert(container != NULL);
 449
 450         switch (direction) {
 451                 case D_LEFT:
 452                         /* Snap to the left is actually a move to the left and then a snap right */
 453                         if (!cell_exists(container->col - 1, container->row) ||
 454                             CUR_TABLE[container->col-1][container->row]->currently_focused != NULL) {
 455                                 LOG("cannot snap to left - the cell is already used\n");
 456                                 return;
 457                         }
 458
 459                         move_current_window(conn, D_LEFT);
 460                         snap_current_container(conn, D_RIGHT);
 461                         return;
 462                 case D_RIGHT: {
 463                         /* Check if the cell is used */
 464                         int new_col = container->col + container->colspan;
 465                         for (int i = 0; i < container->rowspan; i++)
 466                                 if (!cell_exists(new_col, container->row + i) ||
 467                                     CUR_TABLE[new_col][container->row + i]->currently_focused != NULL) {
 468                                         LOG("cannot snap to right - the cell is already used\n");
 469                                         return;
 470                                 }
 471
 472                         /* Check if there are other cells with rowspan, which are in our way.
 473                          * If so, reduce their rowspan. */
 474                         for (int i = container->row-1; i >= 0; i--) {
 475                                 LOG("we got cell %d, %d with rowspan %d\n",
 476                                                 new_col, i, CUR_TABLE[new_col][i]->rowspan);
 477                                 while ((CUR_TABLE[new_col][i]->rowspan-1) >= (container->row - i))
 478                                         CUR_TABLE[new_col][i]->rowspan--;
 479                                 LOG("new rowspan = %d\n", CUR_TABLE[new_col][i]->rowspan);
 480                         }
 481
 482                         container->colspan++;
 483                         break;
 484                 }
 485                 case D_UP:
 486                         if (!cell_exists(container->col, container->row - 1) ||
 487                             CUR_TABLE[container->col][container->row-1]->currently_focused != NULL) {
 488                                 LOG("cannot snap to top - the cell is already used\n");
 489                                 return;
 490                         }
 491
 492                         move_current_window(conn, D_UP);
 493                         snap_current_container(conn, D_DOWN);
 494                         return;
 495                 case D_DOWN: {
 496                         LOG("snapping down\n");
 497                         int new_row = container->row + container->rowspan;
 498                         for (int i = 0; i < container->colspan; i++)
 499                                 if (!cell_exists(container->col + i, new_row) ||
 500                                     CUR_TABLE[container->col + i][new_row]->currently_focused != NULL) {
 501                                         LOG("cannot snap down - the cell is already used\n");
 502                                         return;
 503                                 }
 504
 505                         for (int i = container->col-1; i >= 0; i--) {
 506                                 LOG("we got cell %d, %d with colspan %d\n",
 507                                                 i, new_row, CUR_TABLE[i][new_row]->colspan);
 508                                 while ((CUR_TABLE[i][new_row]->colspan-1) >= (container->col - i))
 509                                         CUR_TABLE[i][new_row]->colspan--;
 510                                 LOG("new colspan = %d\n", CUR_TABLE[i][new_row]->colspan);
 511
 512                         }
 513
 514                         container->rowspan++;
 515                         break;
 516                 }
 517                 /* To make static analyzers happy: */
 518                 default:
 519                         return;
 520         }
 521
 522         render_layout(conn);
 523 }
 524
 525 static void move_floating_window_to_workspace(xcb_connection_t *conn, Client *client, int workspace) {
 526         /* t_ws (to workspace) is just a container pointer to the workspace we’re switching to */
 527         Workspace *t_ws = workspace_get(workspace-1),
 528                   *old_ws = client->workspace;
 529
 530         LOG("moving floating\n");
 531
 532         workspace_initialize(t_ws, c_ws->screen);
 533
 534         /* Check if there is already a fullscreen client on the destination workspace and
 535          * stop moving if so. */
 536         if (client->fullscreen && (t_ws->fullscreen_client != NULL)) {
 537                 LOG("Not moving: Fullscreen client already existing on destination workspace.\n");
 538                 return;
 539         }
 540
 541         floating_assign_to_workspace(client, t_ws);
 542
 543         /* If we’re moving it to an invisible screen, we need to unmap it */
 544         if (!workspace_is_visible(t_ws)) {
 545                 LOG("This workspace is not visible, unmapping\n");
 546                 client_unmap(conn, client);
 547         } else {
 548                 /* If this is not the case, we move the window to a workspace
 549                  * which is on another screen, so we also need to adjust its
 550                  * coordinates. */
 551                 LOG("before x = %d, y = %d\n", client->rect.x, client->rect.y);
 552                 uint32_t relative_x = client->rect.x - old_ws->rect.x,
 553                          relative_y = client->rect.y - old_ws->rect.y;
 554                 LOG("rel_x = %d, rel_y = %d\n", relative_x, relative_y);
 555                 client->rect.x = t_ws->rect.x + relative_x;
 556                 client->rect.y = t_ws->rect.y + relative_y;
 557                 LOG("after x = %d, y = %d\n", client->rect.x, client->rect.y);
 558                 reposition_client(conn, client);
 559                 xcb_flush(conn);
 560         }
 561
 562         LOG("done\n");
 563
 564         render_layout(conn);
 565
 566         if (workspace_is_visible(t_ws))
 567                 set_focus(conn, client, true);
 568 }
 569
 570 /*
 571  * Moves the currently selected window to the given workspace
 572  *
 573  */
 574 static void move_current_window_to_workspace(xcb_connection_t *conn, int workspace) {
 575         LOG("Moving current window to workspace %d\n", workspace);
 576
 577         Container *container = CUR_CELL;
 578
 579         assert(container != NULL);
 580
 581         /* t_ws (to workspace) is just a container pointer to the workspace we’re switching to */
 582         Workspace *t_ws = workspace_get(workspace-1);
 583
 584         Client *current_client = container->currently_focused;
 585         if (current_client == NULL) {
 586                 LOG("No currently focused client in current container.\n");
 587                 return;
 588         }
 589         Client *to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients);
 590         if (to_focus == NULL)
 591                 to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients);
 592
 593         workspace_initialize(t_ws, container->workspace->screen);
 594         /* Check if there is already a fullscreen client on the destination workspace and
 595          * stop moving if so. */
 596         if (current_client->fullscreen && (t_ws->fullscreen_client != NULL)) {
 597                 LOG("Not moving: Fullscreen client already existing on destination workspace.\n");
 598                 return;
 599         }
 600
 601         Container *to_container = t_ws->table[t_ws->current_col][t_ws->current_row];
 602
 603         assert(to_container != NULL);
 604
 605         client_remove_from_container(conn, current_client, container, true);
 606         if (container->workspace->fullscreen_client == current_client)
 607                 container->workspace->fullscreen_client = NULL;
 608
 609         /* TODO: insert it to the correct position */
 610         CIRCLEQ_INSERT_TAIL(&(to_container->clients), current_client, clients);
 611
 612         SLIST_INSERT_HEAD(&(to_container->workspace->focus_stack), current_client, focus_clients);
 613         LOG("Moved.\n");
 614
 615         current_client->container = to_container;
 616         current_client->workspace = to_container->workspace;
 617         container->currently_focused = to_focus;
 618         to_container->currently_focused = current_client;
 619
 620         /* If we’re moving it to an invisible screen, we need to unmap it */
 621         if (!workspace_is_visible(to_container->workspace)) {
 622                 LOG("This workspace is not visible, unmapping\n");
 623                 client_unmap(conn, current_client);
 624         } else {
 625                 if (current_client->fullscreen) {
 626                         LOG("Calling client_enter_fullscreen again\n");
 627                         client_enter_fullscreen(conn, current_client);
 628                 }
 629         }
 630
 631         /* delete all empty columns/rows */
 632         cleanup_table(conn, container->workspace);
 633
 634         render_layout(conn);
 635
 636         if (workspace_is_visible(to_container->workspace))
 637                 set_focus(conn, current_client, true);
 638 }
 639
 640 /*
 641  * Jumps to the given window class / title.
 642  * Title is matched using strstr, that is, matches if it appears anywhere
 643  * in the string. Regular expressions seem to be a bit overkill here. However,
 644  * if we need them for something else somewhen, we may introduce them here, too.
 645  *
 646  */
 647 static void jump_to_window(xcb_connection_t *conn, const char *arguments) {
 648         char *classtitle;
 649         Client *client;
 650
 651         /* The first character is a quote, this was checked before */
 652         classtitle = sstrdup(arguments+1);
 653         /* The last character is a quote, we just set it to NULL */
 654         classtitle[strlen(classtitle)-1] = '\0';
 655
 656         if ((client = get_matching_client(conn, classtitle, NULL)) == NULL) {
 657                 free(classtitle);
 658                 LOG("No matching client found.\n");
 659                 return;
 660         }
 661
 662         free(classtitle);
 663         set_focus(conn, client, true);
 664 }
 665
 666 /*
 667  * Jump directly to the specified workspace, row and col.
 668  * Great for reaching windows that you always keep in the same spot (hello irssi, I'm looking at you)
 669  *
 670  */
 671 static void jump_to_container(xcb_connection_t *conn, const char *arguments) {
 672         int ws, row, col;
 673         int result;
 674
 675         result = sscanf(arguments, "%d %d %d", &ws, &col, &row);
 676         LOG("Jump called with %d parameters (\"%s\")\n", result, arguments);
 677
 678         /* No match? Either no arguments were specified, or no numbers */
 679         if (result < 1) {
 680                 LOG("At least one valid argument required\n");
 681                 return;
 682         }
 683
 684         /* Move to the target workspace */
 685         workspace_show(conn, ws);
 686
 687         if (result < 3)
 688                 return;
 689
 690         LOG("Boundary-checking col %d, row %d... (max cols %d, max rows %d)\n", col, row, c_ws->cols, c_ws->rows);
 691
 692         /* Move to row/col */
 693         if (row >= c_ws->rows)
 694                 row = c_ws->rows - 1;
 695         if (col >= c_ws->cols)
 696                 col = c_ws->cols - 1;
 697
 698         LOG("Jumping to col %d, row %d\n", col, row);
 699         if (c_ws->table[col][row]->currently_focused != NULL)
 700                 set_focus(conn, c_ws->table[col][row]->currently_focused, true);
 701 }
 702
 703 /*
 704  * Travels the focus stack by the given number of times (or once, if no argument
 705  * was specified). That is, selects the window you were in before you focused
 706  * the current window.
 707  *
 708  * The special values 'floating' (select the next floating window), 'tiling'
 709  * (select the next tiling window), 'ft' (if the current window is floating,
 710  * select the next tiling window and vice-versa) are also valid
 711  *
 712  */
 713 static void travel_focus_stack(xcb_connection_t *conn, const char *arguments) {
 714         /* Start count at -1 to always skip the first element */
 715         int times, count = -1;
 716         Client *current;
 717         bool floating_criteria;
 718
 719         /* Either it’s one of the special values… */
 720         if (strcasecmp(arguments, "floating") == 0) {
 721                 floating_criteria = true;
 722         } else if (strcasecmp(arguments, "tiling") == 0) {
 723                 floating_criteria = false;
 724         } else if (strcasecmp(arguments, "ft") == 0) {
 725                 Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
 726                 if (last_focused == SLIST_END(&(c_ws->focus_stack))) {
 727                         LOG("Cannot select the next floating/tiling client because there is no client at all\n");
 728                         return;
 729                 }
 730
 731                 floating_criteria = !client_is_floating(last_focused);
 732         } else {
 733                 /* …or a number was specified */
 734                 if (sscanf(arguments, "%u", &times) != 1) {
 735                         LOG("No or invalid argument given (\"%s\"), using default of 1 times\n", arguments);
 736                         times = 1;
 737                 }
 738
 739                 SLIST_FOREACH(current, &(CUR_CELL->workspace->focus_stack), focus_clients) {
 740                         if (++count < times) {
 741                                 LOG("Skipping\n");
 742                                 continue;
 743                         }
 744
 745                         LOG("Focussing\n");
 746                         set_focus(conn, current, true);
 747                         break;
 748                 }
 749                 return;
 750         }
 751
 752         /* Select the next client matching the criteria parsed above */
 753         SLIST_FOREACH(current, &(CUR_CELL->workspace->focus_stack), focus_clients)
 754                 if (client_is_floating(current) == floating_criteria) {
 755                         set_focus(conn, current, true);
 756                         break;
 757                 }
 758 }
 759
 760 /*
 761  * Goes through the list of arguments (for exec()) and checks if the given argument
 762  * is present. If not, it copies the arguments (because we cannot realloc it) and
 763  * appends the given argument.
 764  *
 765  */
 766 static char **append_argument(char **original, char *argument) {
 767         int num_args;
 768         for (num_args = 0; original[num_args] != NULL; num_args++) {
 769                 LOG("original argument: \"%s\"\n", original[num_args]);
 770                 /* If the argument is already present we return the original pointer */
 771                 if (strcmp(original[num_args], argument) == 0)
 772                         return original;
 773         }
 774         /* Copy the original array */
 775         char **result = smalloc((num_args+2) * sizeof(char*));
 776         memcpy(result, original, num_args * sizeof(char*));
 777         result[num_args] = argument;
 778         result[num_args+1] = NULL;
 779
 780         return result;
 781 }
 782
 783 /*
 784  * Switch to next or previous existing workspace
 785  *
 786  */
 787 static void next_previous_workspace(xcb_connection_t *conn, int direction) {
 788         Workspace *ws = c_ws;
 789
 790         if (direction == 'n') {
 791                 while ((ws = TAILQ_NEXT(ws, workspaces)) != TAILQ_END(workspaces_head)) {
 792                         if (ws->screen == NULL)
 793                                 continue;
 794
 795                         workspace_show(conn, ws->num + 1);
 796                         return;
 797                 }
 798         } else if (direction == 'p') {
 799                 while ((ws = TAILQ_PREV(ws, workspaces_head, workspaces)) != TAILQ_END(workspaces)) {
 800                         if (ws->screen == NULL)
 801                                 continue;
 802
 803                         workspace_show(conn, ws->num + 1);
 804                         return;
 805                 }
 806         }
 807 }
 808
 809 static void parse_resize_command(xcb_connection_t *conn, Client *last_focused, const char *command) {
 810         int first, second;
 811         resize_orientation_t orientation = O_VERTICAL;
 812         Container *con = last_focused->container;
 813         Workspace *ws = con->workspace;
 814
 815         if (STARTS_WITH(command, "left")) {
 816                 if (con->col == 0)
 817                         return;
 818                 first = con->col - 1;
 819                 second = con->col;
 820                 command += strlen("left");
 821         } else if (STARTS_WITH(command, "right")) {
 822                 first = con->col + (con->colspan - 1);
 823                 LOG("column %d\n", first);
 824
 825                 if (!cell_exists(first, con->row) ||
 826                     (first == (ws->cols-1)))
 827                         return;
 828
 829                 second = first + 1;
 830                 command += strlen("right");
 831         } else if (STARTS_WITH(command, "top")) {
 832                 if (con->row == 0)
 833                         return;
 834                 first = con->row - 1;
 835                 second = con->row;
 836                 orientation = O_HORIZONTAL;
 837                 command += strlen("top");
 838         } else if (STARTS_WITH(command, "bottom")) {
 839                 first = con->row + (con->rowspan - 1);
 840                 if (!cell_exists(con->col, first) ||
 841                     (first == (ws->rows-1)))
 842                         return;
 843
 844                 second = first + 1;
 845                 orientation = O_HORIZONTAL;
 846                 command += strlen("bottom");
 847         } else {
 848                 LOG("Syntax: resize <left|right|top|bottom> [+|-]<pixels>\n");
 849                 return;
 850         }
 851
 852         int pixels = atoi(command);
 853         if (pixels == 0)
 854                 return;
 855
 856         resize_container(conn, ws, first, second, orientation, pixels);
 857 }
 858
 859 /*
 860  * Parses a command, see file CMDMODE for more information
 861  *
 862  */
 863 void parse_command(xcb_connection_t *conn, const char *command) {
 864         LOG("--- parsing command \"%s\" ---\n", command);
 865         /* Get the first client from focus stack because floating clients are not
 866          * in any container, therefore CUR_CELL is not appropriate. */
 867         Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
 868         if (last_focused == SLIST_END(&(c_ws->focus_stack)))
 869                 last_focused = NULL;
 870
 871         /* Hmm, just to be sure */
 872         if (command[0] == '\0')
 873                 return;
 874
 875         /* Is it an <exec>? Then execute the given command. */
 876         if (STARTS_WITH(command, "exec ")) {
 877                 LOG("starting \"%s\"\n", command + strlen("exec "));
 878                 start_application(command+strlen("exec "));
 879                 return;
 880         }
 881
 882         if (STARTS_WITH(command, "mark")) {
 883                 if (last_focused == NULL) {
 884                         LOG("There is no window to mark\n");
 885                         return;
 886                 }
 887                 const char *rest = command + strlen("mark");
 888                 while (*rest == ' ')
 889                         rest++;
 890                 if (*rest == '\0') {
 891                         LOG("interactive mark starting\n");
 892                         start_application("i3-input -p 'mark ' -l 1 -P 'Mark: '");
 893                 } else {
 894                         LOG("mark with \"%s\"\n", rest);
 895                         client_mark(conn, last_focused, rest);
 896                 }
 897                 return;
 898         }
 899
 900         if (STARTS_WITH(command, "goto")) {
 901                 const char *rest = command + strlen("goto");
 902                 while (*rest == ' ')
 903                         rest++;
 904                 if (*rest == '\0') {
 905                         LOG("interactive go to mark starting\n");
 906                         start_application("i3-input -p 'goto ' -l 1 -P 'Goto: '");
 907                 } else {
 908                         LOG("go to \"%s\"\n", rest);
 909                         jump_to_mark(conn, rest);
 910                 }
 911                 return;
 912         }
 913
 914         if (STARTS_WITH(command, "stack-limit ")) {
 915                 if (last_focused == NULL || client_is_floating(last_focused)) {
 916                         LOG("No container focused\n");
 917                         return;
 918                 }
 919                 const char *rest = command + strlen("stack-limit ");
 920                 if (strncmp(rest, "rows ", strlen("rows ")) == 0) {
 921                         last_focused->container->stack_limit = STACK_LIMIT_ROWS;
 922                         rest += strlen("rows ");
 923                 } else if (strncmp(rest, "cols ", strlen("cols ")) == 0) {
 924                         last_focused->container->stack_limit = STACK_LIMIT_COLS;
 925                         rest += strlen("cols ");
 926                 } else {
 927                         LOG("Syntax: stack-limit <cols|rows> <limit>\n");
 928                         return;
 929                 }
 930
 931                 last_focused->container->stack_limit_value = atoi(rest);
 932                 if (last_focused->container->stack_limit_value == 0)
 933                         last_focused->container->stack_limit = STACK_LIMIT_NONE;
 934
 935                 return;
 936         }
 937
 938         if (STARTS_WITH(command, "resize ")) {
 939                 if (last_focused == NULL)
 940                         return;
 941                 const char *rest = command + strlen("resize ");
 942                 parse_resize_command(conn, last_focused, rest);
 943                 return;
 944         }
 945
 946         if (STARTS_WITH(command, "mode ")) {
 947                 const char *rest = command + strlen("mode ");
 948                 switch_mode(conn, rest);
 949                 return;
 950         }
 951
 952         /* Is it an <exit>? */
 953         if (STARTS_WITH(command, "exit")) {
 954                 LOG("User issued exit-command, exiting without error.\n");
 955                 exit(EXIT_SUCCESS);
 956         }
 957
 958         /* Is it a <reload>? */
 959         if (STARTS_WITH(command, "reload")) {
 960                 load_configuration(conn, NULL, true);
 961                 return;
 962         }
 963
 964         /* Is it <restart>? Then restart in place. */
 965         if (STARTS_WITH(command, "restart")) {
 966                 LOG("restarting \"%s\"...\n", start_argv[0]);
 967                 /* make sure -a is in the argument list or append it */
 968                 start_argv = append_argument(start_argv, "-a");
 969
 970                 execvp(start_argv[0], start_argv);
 971                 /* not reached */
 972         }
 973
 974         if (STARTS_WITH(command, "kill")) {
 975                 if (last_focused == NULL) {
 976                         LOG("There is no window to kill\n");
 977                         return;
 978                 }
 979
 980                 LOG("Killing current window\n");
 981                 client_kill(conn, last_focused);
 982                 return;
 983         }
 984
 985         /* Is it a jump to a specified workspace, row, col? */
 986         if (STARTS_WITH(command, "jump ")) {
 987                 const char *arguments = command + strlen("jump ");
 988                 if (arguments[0] == '"')
 989                         jump_to_window(conn, arguments);
 990                 else jump_to_container(conn, arguments);
 991                 return;
 992         }
 993
 994         /* Should we travel the focus stack? */
 995         if (STARTS_WITH(command, "focus")) {
 996                 const char *arguments = command + strlen("focus ");
 997                 travel_focus_stack(conn, arguments);
 998                 return;
 999         }
1000
1001         /* Is it 'f' for fullscreen? */
1002         if (command[0] == 'f') {
1003                 if (last_focused == NULL)
1004                         return;
1005                 client_toggle_fullscreen(conn, last_focused);
1006                 return;
1007         }
1008
1009         /* Is it just 's' for stacking or 'd' for default? */
1010         if ((command[0] == 's' || command[0] == 'd' || command[0] == 'T') && (command[1] == '\0')) {
1011                 if (last_focused != NULL && client_is_floating(last_focused)) {
1012                         LOG("not switching, this is a floating client\n");
1013                         return;
1014                 }
1015                 LOG("Switching mode for current container\n");
1016                 int new_mode = MODE_DEFAULT;
1017                 if (command[0] == 's')
1018                         new_mode = MODE_STACK;
1019                 if (command[0] == 'T')
1020                         new_mode = MODE_TABBED;
1021                 switch_layout_mode(conn, CUR_CELL, new_mode);
1022                 return;
1023         }
1024
1025         /* Is it 'bn' (border normal), 'bp' (border 1pixel) or 'bb' (border borderless)? */
1026         /* or even 'bt' (toggle border: 'bp' -> 'bb' -> 'bn' ) */
1027         if (command[0] == 'b') {
1028                 if (last_focused == NULL) {
1029                         LOG("No window focused, cannot change border type\n");
1030                         return;
1031                 }
1032
1033                 char com = command[1];
1034                 if (command[1] == 't') {
1035                         if (last_focused->titlebar_position == TITLEBAR_TOP &&
1036                             !last_focused->borderless)
1037                             com = 'p';
1038                         else if (last_focused->titlebar_position == TITLEBAR_OFF &&
1039                                  !last_focused->borderless)
1040                             com = 'b';
1041                         else com = 'n';
1042                 }
1043
1044                 client_change_border(conn, last_focused, com);
1045                 return;
1046         }
1047
1048         if (command[0] == 'H') {
1049                 LOG("Hiding all floating windows\n");
1050                 floating_toggle_hide(conn, c_ws);
1051                 return;
1052         }
1053
1054         enum { WITH_WINDOW, WITH_CONTAINER, WITH_WORKSPACE, WITH_SCREEN } with = WITH_WINDOW;
1055
1056         /* Is it a <with>? */
1057         if (command[0] == 'w') {
1058                 command++;
1059                 /* TODO: implement */
1060                 if (command[0] == 'c') {
1061                         with = WITH_CONTAINER;
1062                         command++;
1063                 } else if (command[0] == 'w') {
1064                         with = WITH_WORKSPACE;
1065                         command++;
1066                 } else if (command[0] == 's') {
1067                         with = WITH_SCREEN;
1068                         command++;
1069                 } else {
1070                         LOG("not yet implemented.\n");
1071                         return;
1072                 }
1073         }
1074
1075         /* Is it 't' for toggle tiling/floating? */
1076         if (command[0] == 't') {
1077                 if (with == WITH_WORKSPACE) {
1078                         c_ws->auto_float = !c_ws->auto_float;
1079                         LOG("autofloat is now %d\n", c_ws->auto_float);
1080                         return;
1081                 }
1082                 if (last_focused == NULL) {
1083                         LOG("Cannot toggle tiling/floating: workspace empty\n");
1084                         return;
1085                 }
1086
1087                 Workspace *ws = last_focused->workspace;
1088
1089                 toggle_floating_mode(conn, last_focused, false);
1090                 /* delete all empty columns/rows */
1091                 cleanup_table(conn, ws);
1092
1093                 /* Fix colspan/rowspan if it’d overlap */
1094                 fix_colrowspan(conn, ws);
1095
1096                 render_workspace(conn, ws->screen, ws);
1097
1098                 /* Re-focus the client because cleanup_table sets the focus to the last
1099                  * focused client inside a container only. */
1100                 set_focus(conn, last_focused, true);
1101
1102                 return;
1103         }
1104
1105         /* Is it 'n' or 'p' for next/previous workspace? (nw) */
1106         if ((command[0] == 'n' || command[0] == 'p') && command[1] == 'w') {
1107                next_previous_workspace(conn, command[0]);
1108                return;
1109         }
1110
1111         /* It’s a normal <cmd> */
1112         char *rest = NULL;
1113         enum { ACTION_FOCUS, ACTION_MOVE, ACTION_SNAP } action = ACTION_FOCUS;
1114         direction_t direction;
1115         int times = strtol(command, &rest, 10);
1116         if (rest == NULL) {
1117                 LOG("Invalid command (\"%s\")\n", command);
1118                 return;
1119         }
1120
1121         if (*rest == '\0') {
1122                 /* No rest? This was a workspace number, not a times specification */
1123                 workspace_show(conn, times);
1124                 return;
1125         }
1126
1127         if (*rest == 'm' || *rest == 's') {
1128                 action = (*rest == 'm' ? ACTION_MOVE : ACTION_SNAP);
1129                 rest++;
1130         }
1131
1132         int workspace = strtol(rest, &rest, 10);
1133
1134         if (rest == NULL) {
1135                 LOG("Invalid command (\"%s\")\n", command);
1136                 return;
1137         }
1138
1139         if (*rest == '\0') {
1140                 if (last_focused != NULL && client_is_floating(last_focused))
1141                         move_floating_window_to_workspace(conn, last_focused, workspace);
1142                 else move_current_window_to_workspace(conn, workspace);
1143                 return;
1144         }
1145
1146         if (last_focused == NULL) {
1147                 LOG("Not performing (no window found)\n");
1148                 return;
1149         }
1150
1151         if (client_is_floating(last_focused) &&
1152             (action != ACTION_FOCUS && action != ACTION_MOVE)) {
1153                 LOG("Not performing (floating)\n");
1154                 return;
1155         }
1156
1157         /* Now perform action to <where> */
1158         while (*rest != '\0') {
1159                 if (*rest == 'h')
1160                         direction = D_LEFT;
1161                 else if (*rest == 'j')
1162                         direction = D_DOWN;
1163                 else if (*rest == 'k')
1164                         direction = D_UP;
1165                 else if (*rest == 'l')
1166                         direction = D_RIGHT;
1167                 else {
1168                         LOG("unknown direction: %c\n", *rest);
1169                         return;
1170                 }
1171                 rest++;
1172
1173                 if (action == ACTION_FOCUS) {
1174                         if (with == WITH_SCREEN) {
1175                                 focus_thing(conn, direction, THING_SCREEN);
1176                                 continue;
1177                         }
1178                         if (client_is_floating(last_focused)) {
1179                                 floating_focus_direction(conn, last_focused, direction);
1180                                 continue;
1181                         }
1182                         focus_thing(conn, direction, (with == WITH_WINDOW ? THING_WINDOW : THING_CONTAINER));
1183                         continue;
1184                 }
1185
1186                 if (action == ACTION_MOVE) {
1187                         if (with == WITH_SCREEN) {
1188                                 /* TODO: this should swap the screen’s contents
1189                                  * (e.g. all workspaces) with the next/previous/…
1190                                  * screen */
1191                                 LOG("Not yet implemented\n");
1192                                 continue;
1193                         }
1194                         if (client_is_floating(last_focused)) {
1195                                 floating_move(conn, last_focused, direction);
1196                                 continue;
1197                         }
1198                         if (with == WITH_WINDOW)
1199                                 move_current_window(conn, direction);
1200                         else move_current_container(conn, direction);
1201                         continue;
1202                 }
1203
1204                 if (action == ACTION_SNAP) {
1205                         if (with == WITH_SCREEN) {
1206                                 LOG("You cannot snap a screen (it makes no sense).\n");
1207                                 continue;
1208                         }
1209                         snap_current_container(conn, direction);
1210                         continue;
1211                 }
1212         }
1213 }