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
  29 bool focus_window_in_container(xcb_connection_t *conn, Container *container, direction_t direction) {
  30         /* If this container is empty, we’re done */
  31         if (container->currently_focused == NULL)
  32                 return false;
  33
  34         /* Get the previous/next client or wrap around */
  35         Client *candidate = NULL;
  36         if (direction == D_UP) {
  37                 if ((candidate = CIRCLEQ_PREV_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL)
  38                         candidate = CIRCLEQ_LAST(&(container->clients));
  39         }
  40         else if (direction == D_DOWN) {
  41                 if ((candidate = CIRCLEQ_NEXT_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL)
  42                         candidate = CIRCLEQ_FIRST(&(container->clients));
  43         } else LOG("Direction not implemented!\n");
  44
  45         /* If we could not switch, the container contains exactly one client. We return false */
  46         if (candidate == container->currently_focused)
  47                 return false;
  48
  49         /* Set focus */
  50         set_focus(conn, candidate, true);
  51
  52         return true;
  53 }
  54
  55 typedef enum { THING_WINDOW, THING_CONTAINER } thing_t;
  56
  57 static void focus_thing(xcb_connection_t *conn, direction_t direction, thing_t thing) {
  58         LOG("focusing direction %d\n", direction);
  59
  60         int new_row = current_row,
  61             new_col = current_col;
  62
  63         Container *container = CUR_CELL;
  64         Workspace *t_ws = c_ws;
  65
  66         /* There always is a container. If not, current_col or current_row is wrong */
  67         assert(container != NULL);
  68
  69         if (container->workspace->fullscreen_client != NULL) {
  70                 LOG("You're in fullscreen mode. Won't switch focus\n");
  71                 return;
  72         }
  73
  74         /* TODO: for horizontal default layout, this has to be expanded to LEFT/RIGHT */
  75         if (direction == D_UP || direction == D_DOWN) {
  76                 if (thing == THING_WINDOW)
  77                         /* Let’s see if we can perform up/down focus in the current container */
  78                         if (focus_window_in_container(conn, container, direction))
  79                                 return;
  80
  81                 if (direction == D_DOWN && cell_exists(current_col, current_row+1))
  82                         new_row = current_row + t_ws->table[current_col][current_row]->rowspan;
  83                 else if (direction == D_UP && cell_exists(current_col, current_row-1)) {
  84                         /* Set new_row as a sane default, but it may get overwritten in a second */
  85                         new_row--;
  86
  87                         /* Search from the top to correctly handle rowspanned containers */
  88                         for (int rows = 0; rows < current_row; rows += t_ws->table[current_col][rows]->rowspan) {
  89                                 if (new_row > (rows + (t_ws->table[current_col][rows]->rowspan - 1)))
  90                                         continue;
  91
  92                                 new_row = rows;
  93                                 break;
  94                         }
  95                 } else {
  96                         /* Let’s see if there is a screen down/up there to which we can switch */
  97                         LOG("container is at %d with height %d\n", container->y, container->height);
  98                         i3Screen *screen;
  99                         int destination_y = (direction == D_UP ? (container->y - 1) : (container->y + container->height + 1));
 100                         if ((screen = get_screen_containing(container->x, destination_y)) == NULL) {
 101                                 LOG("Wrapping screen around vertically\n");
 102                                 /* No screen found? Then wrap */
 103                                 screen = get_screen_most((direction == D_UP ? D_DOWN : D_UP));
 104                         }
 105                         t_ws = &(workspaces[screen->current_workspace]);
 106                         new_row = (direction == D_UP ? (t_ws->rows - 1) : 0);
 107                 }
 108         } else if (direction == D_LEFT || direction == D_RIGHT) {
 109                 if (direction == D_RIGHT && cell_exists(current_col+1, current_row))
 110                         new_col = current_col + t_ws->table[current_col][current_row]->colspan;
 111                 else if (direction == D_LEFT && cell_exists(current_col-1, current_row)) {
 112                         /* Set new_col as a sane default, but it may get overwritten in a second */
 113                         new_col--;
 114
 115                         /* Search from the left to correctly handle colspanned containers */
 116                         for (int cols = 0; cols < current_col; cols += t_ws->table[cols][current_row]->colspan) {
 117                                 if (new_col > (cols + (t_ws->table[cols][current_row]->colspan - 1)))
 118                                         continue;
 119
 120                                 new_col = cols;
 121                                 break;
 122                         }
 123                 } else {
 124                         /* Let’s see if there is a screen left/right here to which we can switch */
 125                         LOG("container is at %d with width %d\n", container->x, container->width);
 126                         i3Screen *screen;
 127                         int destination_x = (direction == D_LEFT ? (container->x - 1) : (container->x + container->width + 1));
 128                         if ((screen = get_screen_containing(destination_x, container->y)) == NULL) {
 129                                 LOG("Wrapping screen around horizontally\n");
 130                                 screen = get_screen_most((direction == D_LEFT ? D_RIGHT : D_LEFT));
 131                         }
 132                         t_ws = &(workspaces[screen->current_workspace]);
 133                         new_col = (direction == D_LEFT ? (t_ws->cols - 1) : 0);
 134                 }
 135         } else {
 136                 LOG("direction unhandled\n");
 137                 return;
 138         }
 139
 140         /* Bounds checking */
 141         if (new_col >= t_ws->cols)
 142                 new_col = (t_ws->cols - 1);
 143         if (new_row >= t_ws->rows)
 144                 new_row = (t_ws->rows - 1);
 145
 146         if (t_ws->table[new_col][new_row]->currently_focused != NULL)
 147                 set_focus(conn, t_ws->table[new_col][new_row]->currently_focused, true);
 148 }
 149
 150 /*
 151  * Tries to move the window inside its current container.
 152  *
 153  * Returns true if the window could be moved, false otherwise.
 154  *
 155  */
 156 static bool move_current_window_in_container(xcb_connection_t *conn, Client *client,
 157                 direction_t direction) {
 158         assert(client->container != NULL);
 159
 160         Client *other = (direction == D_UP ? CIRCLEQ_PREV(client, clients) :
 161                                              CIRCLEQ_NEXT(client, clients));
 162
 163         if (other == CIRCLEQ_END(&(client->container->clients)))
 164                 return false;
 165
 166         LOG("i can do that\n");
 167         /* We can move the client inside its current container */
 168         CIRCLEQ_REMOVE(&(client->container->clients), client, clients);
 169         if (direction == D_UP)
 170                 CIRCLEQ_INSERT_BEFORE(&(client->container->clients), other, client, clients);
 171         else CIRCLEQ_INSERT_AFTER(&(client->container->clients), other, client, clients);
 172         render_layout(conn);
 173         return true;
 174 }
 175
 176 /*
 177  * Moves the current window or whole container to the given direction, creating a column/row if
 178  * necessary.
 179  *
 180  */
 181 static void move_current_window(xcb_connection_t *conn, direction_t direction) {
 182         LOG("moving window to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" :
 183                                             (direction == D_LEFT ? "left" : "right"))));
 184         /* Get current window */
 185         Container *container = CUR_CELL,
 186                   *new = NULL;
 187
 188         /* There has to be a container, see focus_window() */
 189         assert(container != NULL);
 190
 191         /* If there is no window or the dock window is focused, we’re done */
 192         if (container->currently_focused == NULL ||
 193             container->currently_focused->dock)
 194                 return;
 195
 196         /* As soon as the client is moved away, the last focused client in the old
 197          * container needs to get focus, if any. Therefore, we save it here. */
 198         Client *current_client = container->currently_focused;
 199         Client *to_focus = get_last_focused_client(conn, container, current_client);
 200
 201         if (to_focus == NULL) {
 202                 to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients);
 203                 if (to_focus == NULL)
 204                         to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients);
 205         }
 206
 207         switch (direction) {
 208                 case D_LEFT:
 209                         /* If we’re at the left-most position, move the rest of the table right */
 210                         if (current_col == 0) {
 211                                 expand_table_cols_at_head(c_ws);
 212                                 new = CUR_CELL;
 213                         } else
 214                                 new = CUR_TABLE[--current_col][current_row];
 215                         break;
 216                 case D_RIGHT:
 217                         if (current_col == (c_ws->cols-1))
 218                                 expand_table_cols(c_ws);
 219
 220                         new = CUR_TABLE[++current_col][current_row];
 221                         break;
 222                 case D_UP:
 223                         if (move_current_window_in_container(conn, current_client, D_UP))
 224                                 return;
 225
 226                         /* if we’re at the up-most position, move the rest of the table down */
 227                         if (current_row == 0) {
 228                                 expand_table_rows_at_head(c_ws);
 229                                 new = CUR_CELL;
 230                         } else
 231                                 new = CUR_TABLE[current_col][--current_row];
 232                         break;
 233                 case D_DOWN:
 234                         if (move_current_window_in_container(conn, current_client, D_DOWN))
 235                                 return;
 236
 237                         if (current_row == (c_ws->rows-1))
 238                                 expand_table_rows(c_ws);
 239
 240                         new = CUR_TABLE[current_col][++current_row];
 241                         break;
 242         }
 243
 244         /* Remove it from the old container and put it into the new one */
 245         client_remove_from_container(conn, current_client, container);
 246
 247         if (new->currently_focused != NULL)
 248                 CIRCLEQ_INSERT_AFTER(&(new->clients), new->currently_focused, current_client, clients);
 249         else CIRCLEQ_INSERT_TAIL(&(new->clients), current_client, clients);
 250         SLIST_INSERT_HEAD(&(new->workspace->focus_stack), current_client, focus_clients);
 251
 252         /* Update data structures */
 253         current_client->container = new;
 254         container->currently_focused = to_focus;
 255         new->currently_focused = current_client;
 256
 257         Workspace *workspace = container->workspace;
 258
 259         /* delete all empty columns/rows */
 260         cleanup_table(conn, workspace);
 261
 262         /* Fix colspan/rowspan if it’d overlap */
 263         fix_colrowspan(conn, workspace);
 264
 265         render_layout(conn);
 266
 267         set_focus(conn, current_client, true);
 268 }
 269
 270 static void move_current_container(xcb_connection_t *conn, direction_t direction) {
 271         LOG("moving container to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" :
 272                                             (direction == D_LEFT ? "left" : "right"))));
 273         /* Get current window */
 274         Container *container = CUR_CELL,
 275                   *new = NULL;
 276
 277         Container **old = &CUR_CELL;
 278
 279         /* There has to be a container, see focus_window() */
 280         assert(container != NULL);
 281
 282         switch (direction) {
 283                 case D_LEFT:
 284                         /* If we’re at the left-most position, move the rest of the table right */
 285                         if (current_col == 0) {
 286                                 expand_table_cols_at_head(c_ws);
 287                                 new = CUR_CELL;
 288                                 old = &CUR_TABLE[current_col+1][current_row];
 289                         } else
 290                                 new = CUR_TABLE[--current_col][current_row];
 291                         break;
 292                 case D_RIGHT:
 293                         if (current_col == (c_ws->cols-1))
 294                                 expand_table_cols(c_ws);
 295
 296                         new = CUR_TABLE[++current_col][current_row];
 297                         break;
 298                 case D_UP:
 299                         /* if we’re at the up-most position, move the rest of the table down */
 300                         if (current_row == 0) {
 301                                 expand_table_rows_at_head(c_ws);
 302                                 new = CUR_CELL;
 303                                 old = &CUR_TABLE[current_col][current_row+1];
 304                         } else
 305                                 new = CUR_TABLE[current_col][--current_row];
 306                         break;
 307                 case D_DOWN:
 308                         if (current_row == (c_ws->rows-1))
 309                                 expand_table_rows(c_ws);
 310
 311                         new = CUR_TABLE[current_col][++current_row];
 312                         break;
 313         }
 314
 315         LOG("old = %d,%d and new = %d,%d\n", container->col, container->row, new->col, new->row);
 316
 317         /* Swap the containers */
 318         int col = new->col;
 319         int row = new->row;
 320
 321         *old = new;
 322         new->col = container->col;
 323         new->row = container->row;
 324
 325         CUR_CELL = container;
 326         container->col = col;
 327         container->row = row;
 328
 329         Workspace *workspace = container->workspace;
 330
 331         /* delete all empty columns/rows */
 332         cleanup_table(conn, workspace);
 333
 334         /* Fix colspan/rowspan if it’d overlap */
 335         fix_colrowspan(conn, workspace);
 336
 337         render_layout(conn);
 338 }
 339
 340 /*
 341  * "Snaps" the current container (not possible for windows, because it works at table base)
 342  * to the given direction, that is, adjusts cellspan/rowspan
 343  *
 344  */
 345 static void snap_current_container(xcb_connection_t *conn, direction_t direction) {
 346         LOG("snapping container to direction %d\n", direction);
 347
 348         Container *container = CUR_CELL;
 349
 350         assert(container != NULL);
 351
 352         switch (direction) {
 353                 case D_LEFT:
 354                         /* Snap to the left is actually a move to the left and then a snap right */
 355                         if (!cell_exists(container->col - 1, container->row) ||
 356                                 CUR_TABLE[container->col-1][container->row]->currently_focused != NULL) {
 357                                 LOG("cannot snap to left - the cell is already used\n");
 358                                 return;
 359                         }
 360
 361                         move_current_window(conn, D_LEFT);
 362                         snap_current_container(conn, D_RIGHT);
 363                         return;
 364                 case D_RIGHT: {
 365                         /* Check if the cell is used */
 366                         int new_col = container->col + container->colspan;
 367                         if (!cell_exists(new_col, container->row) ||
 368                                 CUR_TABLE[new_col][container->row]->currently_focused != NULL) {
 369                                 LOG("cannot snap to right - the cell is already used\n");
 370                                 return;
 371                         }
 372
 373                         /* Check if there are other cells with rowspan, which are in our way.
 374                          * If so, reduce their rowspan. */
 375                         for (int i = container->row-1; i >= 0; i--) {
 376                                 LOG("we got cell %d, %d with rowspan %d\n",
 377                                                 new_col, i, CUR_TABLE[new_col][i]->rowspan);
 378                                 while ((CUR_TABLE[new_col][i]->rowspan-1) >= (container->row - i))
 379                                         CUR_TABLE[new_col][i]->rowspan--;
 380                                 LOG("new rowspan = %d\n", CUR_TABLE[new_col][i]->rowspan);
 381                         }
 382
 383                         container->colspan++;
 384                         break;
 385                 }
 386                 case D_UP:
 387                         if (!cell_exists(container->col, container->row - 1) ||
 388                                 CUR_TABLE[container->col][container->row-1]->currently_focused != NULL) {
 389                                 LOG("cannot snap to top - the cell is already used\n");
 390                                 return;
 391                         }
 392
 393                         move_current_window(conn, D_UP);
 394                         snap_current_container(conn, D_DOWN);
 395                         return;
 396                 case D_DOWN: {
 397                         LOG("snapping down\n");
 398                         int new_row = container->row + container->rowspan;
 399                         if (!cell_exists(container->col, new_row) ||
 400                                 CUR_TABLE[container->col][new_row]->currently_focused != NULL) {
 401                                 LOG("cannot snap down - the cell is already used\n");
 402                                 return;
 403                         }
 404
 405                         for (int i = container->col-1; i >= 0; i--) {
 406                                 LOG("we got cell %d, %d with colspan %d\n",
 407                                                 i, new_row, CUR_TABLE[i][new_row]->colspan);
 408                                 while ((CUR_TABLE[i][new_row]->colspan-1) >= (container->col - i))
 409                                         CUR_TABLE[i][new_row]->colspan--;
 410                                 LOG("new colspan = %d\n", CUR_TABLE[i][new_row]->colspan);
 411
 412                         }
 413
 414                         container->rowspan++;
 415                         break;
 416                 }
 417         }
 418
 419         render_layout(conn);
 420 }
 421
 422 static void move_floating_window_to_workspace(xcb_connection_t *conn, Client *client, int workspace) {
 423         /* t_ws (to workspace) is just a container pointer to the workspace we’re switching to */
 424         Workspace *t_ws = &(workspaces[workspace-1]);
 425
 426         LOG("moving floating\n");
 427
 428         if (t_ws->screen == NULL) {
 429                 LOG("initializing new workspace, setting num to %d\n", workspace-1);
 430                 t_ws->screen = c_ws->screen;
 431                 /* Copy the dimensions from the virtual screen */
 432                 memcpy(&(t_ws->rect), &(t_ws->screen->rect), sizeof(Rect));
 433         } else {
 434                 /* Check if there is already a fullscreen client on the destination workspace and
 435                  * stop moving if so. */
 436                 if (client->fullscreen && (t_ws->fullscreen_client != NULL)) {
 437                         LOG("Not moving: Fullscreen client already existing on destination workspace.\n");
 438                         return;
 439                 }
 440         }
 441
 442         /* Remove from focus stack */
 443         SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients);
 444
 445         if (client->workspace->fullscreen_client == client)
 446                 client->workspace->fullscreen_client = NULL;
 447
 448         /* Insert into destination focus stack */
 449         client->workspace = t_ws;
 450         SLIST_INSERT_HEAD(&(t_ws->focus_stack), client, focus_clients);
 451         if (client->fullscreen)
 452                 t_ws->fullscreen_client = client;
 453
 454         /* If we’re moving it to an invisible screen, we need to unmap it */
 455         if (t_ws->screen->current_workspace != t_ws->num) {
 456                 LOG("This workspace is not visible, unmapping\n");
 457                 xcb_unmap_window(conn, client->frame);
 458         }
 459
 460         LOG("done\n");
 461
 462         render_layout(conn);
 463 }
 464
 465 /*
 466  * Moves the currently selected window to the given workspace
 467  *
 468  */
 469 static void move_current_window_to_workspace(xcb_connection_t *conn, int workspace) {
 470         LOG("Moving current window to workspace %d\n", workspace);
 471
 472         Container *container = CUR_CELL;
 473
 474         assert(container != NULL);
 475
 476         /* t_ws (to workspace) is just a container pointer to the workspace we’re switching to */
 477         Workspace *t_ws = &(workspaces[workspace-1]);
 478
 479         Client *current_client = container->currently_focused;
 480         if (current_client == NULL) {
 481                 LOG("No currently focused client in current container.\n");
 482                 return;
 483         }
 484         Client *to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients);
 485         if (to_focus == NULL)
 486                 to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients);
 487
 488         if (t_ws->screen == NULL) {
 489                 LOG("initializing new workspace, setting num to %d\n", workspace-1);
 490                 t_ws->screen = container->workspace->screen;
 491                 /* Copy the dimensions from the virtual screen */
 492                 memcpy(&(t_ws->rect), &(container->workspace->screen->rect), sizeof(Rect));
 493         } else {
 494                 /* Check if there is already a fullscreen client on the destination workspace and
 495                  * stop moving if so. */
 496                 if (current_client->fullscreen && (t_ws->fullscreen_client != NULL)) {
 497                         LOG("Not moving: Fullscreen client already existing on destination workspace.\n");
 498                         return;
 499                 }
 500         }
 501
 502         Container *to_container = t_ws->table[t_ws->current_col][t_ws->current_row];
 503
 504         assert(to_container != NULL);
 505
 506         client_remove_from_container(conn, current_client, container);
 507         if (container->workspace->fullscreen_client == current_client)
 508                 container->workspace->fullscreen_client = NULL;
 509
 510         /* TODO: insert it to the correct position */
 511         CIRCLEQ_INSERT_TAIL(&(to_container->clients), current_client, clients);
 512
 513         SLIST_INSERT_HEAD(&(to_container->workspace->focus_stack), current_client, focus_clients);
 514         if (current_client->fullscreen)
 515                 t_ws->fullscreen_client = current_client;
 516         LOG("Moved.\n");
 517
 518         current_client->container = to_container;
 519         container->currently_focused = to_focus;
 520         to_container->currently_focused = current_client;
 521
 522         /* If we’re moving it to an invisible screen, we need to unmap it */
 523         if (to_container->workspace->screen->current_workspace != to_container->workspace->num) {
 524                 LOG("This workspace is not visible, unmapping\n");
 525                 xcb_unmap_window(conn, current_client->frame);
 526         }
 527
 528         /* delete all empty columns/rows */
 529         cleanup_table(conn, container->workspace);
 530
 531         render_layout(conn);
 532 }
 533
 534 /*
 535  * Switches to the given workspace
 536  *
 537  */
 538 void show_workspace(xcb_connection_t *conn, int workspace) {
 539         Client *client;
 540         bool need_warp = false;
 541         xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
 542         /* t_ws (to workspace) is just a convenience pointer to the workspace we’re switching to */
 543         Workspace *t_ws = &(workspaces[workspace-1]);
 544
 545         LOG("show_workspace(%d)\n", workspace);
 546
 547         /* Store current_row/current_col */
 548         c_ws->current_row = current_row;
 549         c_ws->current_col = current_col;
 550
 551         /* Check if the workspace has not been used yet */
 552         if (t_ws->screen == NULL) {
 553                 LOG("initializing new workspace, setting num to %d\n", workspace);
 554                 t_ws->screen = c_ws->screen;
 555                 /* Copy the dimensions from the virtual screen */
 556                 memcpy(&(t_ws->rect), &(t_ws->screen->rect), sizeof(Rect));
 557         }
 558
 559         if (c_ws->screen != t_ws->screen) {
 560                 /* We need to switch to the other screen first */
 561                 LOG("moving over to other screen.\n");
 562
 563                 /* Store the old client */
 564                 Client *old_client = CUR_CELL->currently_focused;
 565
 566                 c_ws = &(workspaces[t_ws->screen->current_workspace]);
 567                 current_col = c_ws->current_col;
 568                 current_row = c_ws->current_row;
 569                 if (CUR_CELL->currently_focused != NULL)
 570                         need_warp = true;
 571                 else {
 572                         Rect *dims = &(c_ws->screen->rect);
 573                         xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0,
 574                                          dims->x + (dims->width / 2), dims->y + (dims->height / 2));
 575                 }
 576
 577                 /* Re-decorate the old client, it’s not focused anymore */
 578                 if ((old_client != NULL) && !old_client->dock)
 579                         redecorate_window(conn, old_client);
 580                 else xcb_flush(conn);
 581         }
 582
 583         /* Check if we need to change something or if we’re already there */
 584         if (c_ws->screen->current_workspace == (workspace-1)) {
 585                 if (CUR_CELL->currently_focused != NULL) {
 586                         set_focus(conn, CUR_CELL->currently_focused, true);
 587                         if (need_warp) {
 588                                 client_warp_pointer_into(conn, CUR_CELL->currently_focused);
 589                                 xcb_flush(conn);
 590                         }
 591                 }
 592                 return;
 593         }
 594
 595         t_ws->screen->current_workspace = workspace-1;
 596         Workspace *old_workspace = c_ws;
 597         c_ws = &workspaces[workspace-1];
 598
 599         /* Unmap all clients of the old workspace */
 600         unmap_workspace(conn, old_workspace);
 601
 602         current_row = c_ws->current_row;
 603         current_col = c_ws->current_col;
 604         LOG("new current row = %d, current col = %d\n", current_row, current_col);
 605
 606         ignore_enter_notify_forall(conn, c_ws, true);
 607
 608         /* Map all clients on the new workspace */
 609         FOR_TABLE(c_ws)
 610                 CIRCLEQ_FOREACH(client, &(c_ws->table[cols][rows]->clients), clients)
 611                         xcb_map_window(conn, client->frame);
 612
 613         /* Map all floating clients */
 614         SLIST_FOREACH(client, &(c_ws->focus_stack), focus_clients) {
 615                 if (!client->floating)
 616                         continue;
 617
 618                 xcb_map_window(conn, client->frame);
 619         }
 620
 621         /* Map all stack windows, if any */
 622         struct Stack_Window *stack_win;
 623         SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
 624                 if (stack_win->container->workspace == c_ws)
 625                         xcb_map_window(conn, stack_win->window);
 626
 627         ignore_enter_notify_forall(conn, c_ws, false);
 628
 629         /* Restore focus on the new workspace */
 630         if (CUR_CELL->currently_focused != NULL) {
 631                 set_focus(conn, CUR_CELL->currently_focused, true);
 632                 if (need_warp) {
 633                         client_warp_pointer_into(conn, CUR_CELL->currently_focused);
 634                         xcb_flush(conn);
 635                 }
 636         } else xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
 637
 638         render_layout(conn);
 639 }
 640
 641 /*
 642  * Jumps to the given window class / title.
 643  * Title is matched using strstr, that is, matches if it appears anywhere
 644  * in the string. Regular expressions seem to be a bit overkill here. However,
 645  * if we need them for something else somewhen, we may introduce them here, too.
 646  *
 647  */
 648 static void jump_to_window(xcb_connection_t *conn, const char *arguments) {
 649         char *classtitle;
 650         Client *client;
 651
 652         /* The first character is a quote, this was checked before */
 653         classtitle = sstrdup(arguments+1);
 654         /* The last character is a quote, we just set it to NULL */
 655         classtitle[strlen(classtitle)-1] = '\0';
 656
 657         if ((client = get_matching_client(conn, classtitle, NULL)) == NULL) {
 658                 free(classtitle);
 659                 LOG("No matching client found.\n");
 660                 return;
 661         }
 662
 663         free(classtitle);
 664         set_focus(conn, client, true);
 665 }
 666
 667 /*
 668  * Jump directly to the specified workspace, row and col.
 669  * Great for reaching windows that you always keep in the same spot (hello irssi, I'm looking at you)
 670  *
 671  */
 672 static void jump_to_container(xcb_connection_t *conn, const char *arguments) {
 673         int ws, row, col;
 674         int result;
 675
 676         result = sscanf(arguments, "%d %d %d", &ws, &col, &row);
 677         LOG("Jump called with %d parameters (\"%s\")\n", result, arguments);
 678
 679         /* No match? Either no arguments were specified, or no numbers */
 680         if (result < 1) {
 681                 LOG("At least one valid argument required\n");
 682                 return;
 683         }
 684
 685         /* Move to the target workspace */
 686         show_workspace(conn, ws);
 687
 688         if (result < 3)
 689                 return;
 690
 691         LOG("Boundary-checking col %d, row %d... (max cols %d, max rows %d)\n", col, row, c_ws->cols, c_ws->rows);
 692
 693         /* Move to row/col */
 694         if (row >= c_ws->rows)
 695                 row = c_ws->rows - 1;
 696         if (col >= c_ws->cols)
 697                 col = c_ws->cols - 1;
 698
 699         LOG("Jumping to col %d, row %d\n", col, row);
 700         if (c_ws->table[col][row]->currently_focused != NULL)
 701                 set_focus(conn, c_ws->table[col][row]->currently_focused, true);
 702 }
 703
 704 /*
 705  * Travels the focus stack by the given number of times (or once, if no argument
 706  * was specified). That is, selects the window you were in before you focused
 707  * the current window.
 708  *
 709  */
 710 static void travel_focus_stack(xcb_connection_t *conn, const char *arguments) {
 711         /* Start count at -1 to always skip the first element */
 712         int times, count = -1;
 713         Client *current;
 714
 715         if (sscanf(arguments, "%u", &times) != 1) {
 716                 LOG("No or invalid argument given (\"%s\"), using default of 1 times\n", arguments);
 717                 times = 1;
 718         }
 719
 720         Workspace *ws = CUR_CELL->workspace;
 721
 722         SLIST_FOREACH(current, &(ws->focus_stack), focus_clients) {
 723                 if (++count < times) {
 724                         LOG("Skipping\n");
 725                         continue;
 726                 }
 727
 728                 LOG("Focussing\n");
 729                 set_focus(conn, current, true);
 730                 break;
 731         }
 732 }
 733
 734 /*
 735  * Parses a command, see file CMDMODE for more information
 736  *
 737  */
 738 void parse_command(xcb_connection_t *conn, const char *command) {
 739         LOG("--- parsing command \"%s\" ---\n", command);
 740         /* Get the first client from focus stack because floating clients are not
 741          * in any container, therefore CUR_CELL is not appropriate. */
 742         Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
 743         if (last_focused == SLIST_END(&(c_ws->focus_stack)))
 744                 last_focused = NULL;
 745
 746         /* Hmm, just to be sure */
 747         if (command[0] == '\0')
 748                 return;
 749
 750         /* Is it an <exec>? Then execute the given command. */
 751         if (STARTS_WITH(command, "exec ")) {
 752                 LOG("starting \"%s\"\n", command + strlen("exec "));
 753                 start_application(command+strlen("exec "));
 754                 return;
 755         }
 756
 757         /* Is it an <exit>? */
 758         if (STARTS_WITH(command, "exit")) {
 759                 LOG("User issued exit-command, exiting without error.\n");
 760                 exit(EXIT_SUCCESS);
 761         }
 762
 763         /* Is it <restart>? Then restart in place. */
 764         if (STARTS_WITH(command, "restart")) {
 765                 LOG("restarting \"%s\"...\n", start_argv[0]);
 766                 execvp(start_argv[0], start_argv);
 767                 /* not reached */
 768         }
 769
 770         if (STARTS_WITH(command, "kill")) {
 771                 if (last_focused == NULL) {
 772                         LOG("There is no window to kill\n");
 773                         return;
 774                 }
 775
 776                 LOG("Killing current window\n");
 777                 client_kill(conn, last_focused);
 778                 return;
 779         }
 780
 781         /* Is it a jump to a specified workspace, row, col? */
 782         if (STARTS_WITH(command, "jump ")) {
 783                 const char *arguments = command + strlen("jump ");
 784                 if (arguments[0] == '"')
 785                         jump_to_window(conn, arguments);
 786                 else jump_to_container(conn, arguments);
 787                 return;
 788         }
 789
 790         /* Should we travel the focus stack? */
 791         if (STARTS_WITH(command, "focus")) {
 792                 const char *arguments = command + strlen("focus");
 793                 travel_focus_stack(conn, arguments);
 794                 return;
 795         }
 796
 797         /* Is it 'f' for fullscreen? */
 798         if (command[0] == 'f') {
 799                 if (last_focused == NULL)
 800                         return;
 801                 client_toggle_fullscreen(conn, last_focused);
 802                 return;
 803         }
 804
 805         /* Is it just 's' for stacking or 'd' for default? */
 806         if ((command[0] == 's' || command[0] == 'd') && (command[1] == '\0')) {
 807                 if (last_focused->floating) {
 808                         LOG("not switching, this is a floating client\n");
 809                         return;
 810                 }
 811                 LOG("Switching mode for current container\n");
 812                 switch_layout_mode(conn, CUR_CELL, (command[0] == 's' ? MODE_STACK : MODE_DEFAULT));
 813                 return;
 814         }
 815
 816         /* Is it 't' for toggle tiling/floating? */
 817         if (command[0] == 't') {
 818                 if (last_focused == NULL) {
 819                         LOG("Cannot toggle tiling/floating: workspace empty\n");
 820                         return;
 821                 }
 822
 823                 toggle_floating_mode(conn, last_focused);
 824                 return;
 825         }
 826
 827         enum { WITH_WINDOW, WITH_CONTAINER } with = WITH_WINDOW;
 828
 829         /* Is it a <with>? */
 830         if (command[0] == 'w') {
 831                 command++;
 832                 /* TODO: implement */
 833                 if (command[0] == 'c') {
 834                         with = WITH_CONTAINER;
 835                         command++;
 836                 } else {
 837                         LOG("not yet implemented.\n");
 838                         return;
 839                 }
 840         }
 841
 842         /* It’s a normal <cmd> */
 843         char *rest = NULL;
 844         enum { ACTION_FOCUS, ACTION_MOVE, ACTION_SNAP } action = ACTION_FOCUS;
 845         direction_t direction;
 846         int times = strtol(command, &rest, 10);
 847         if (rest == NULL) {
 848                 LOG("Invalid command (\"%s\")\n", command);
 849                 return;
 850         }
 851
 852         if (*rest == '\0') {
 853                 /* No rest? This was a tag number, not a times specification */
 854                 show_workspace(conn, times);
 855                 return;
 856         }
 857
 858         if (*rest == 'm' || *rest == 's') {
 859                 action = (*rest == 'm' ? ACTION_MOVE : ACTION_SNAP);
 860                 rest++;
 861         }
 862
 863         int workspace = strtol(rest, &rest, 10);
 864
 865         if (rest == NULL) {
 866                 LOG("Invalid command (\"%s\")\n", command);
 867                 return;
 868         }
 869
 870         if (*rest == '\0') {
 871                 if (last_focused->floating)
 872                         move_floating_window_to_workspace(conn, last_focused, workspace);
 873                 else move_current_window_to_workspace(conn, workspace);
 874                 return;
 875         }
 876
 877         if (last_focused->floating) {
 878                 LOG("Not performing because this is a floating window\n");
 879                 return;
 880         }
 881
 882         /* Now perform action to <where> */
 883         while (*rest != '\0') {
 884                 if (*rest == 'h')
 885                         direction = D_LEFT;
 886                 else if (*rest == 'j')
 887                         direction = D_DOWN;
 888                 else if (*rest == 'k')
 889                         direction = D_UP;
 890                 else if (*rest == 'l')
 891                         direction = D_RIGHT;
 892                 else {
 893                         LOG("unknown direction: %c\n", *rest);
 894                         return;
 895                 }
 896
 897                 if (action == ACTION_FOCUS)
 898                         focus_thing(conn, direction, (with == WITH_WINDOW ? THING_WINDOW : THING_CONTAINER));
 899                 else if (action == ACTION_MOVE) {
 900                         if (with == WITH_WINDOW)
 901                                 move_current_window(conn, direction);
 902                         else move_current_container(conn, direction);
 903                 }
 904                 else if (action == ACTION_SNAP)
 905                         snap_current_container(conn, direction);
 906
 907                 rest++;
 908         }
 909
 910         LOG("--- done ---\n");
 911 }