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
  32 bool focus_window_in_container(xcb_connection_t *conn, Container *container, direction_t direction) {
  33         /* If this container is empty, we’re done */
  34         if (container->currently_focused == NULL)
  35                 return false;
  36
  37         /* Get the previous/next client or wrap around */
  38         Client *candidate = NULL;
  39         if (direction == D_UP) {
  40                 if ((candidate = CIRCLEQ_PREV_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL)
  41                         candidate = CIRCLEQ_LAST(&(container->clients));
  42         }
  43         else if (direction == D_DOWN) {
  44                 if ((candidate = CIRCLEQ_NEXT_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL)
  45                         candidate = CIRCLEQ_FIRST(&(container->clients));
  46         } else LOG("Direction not implemented!\n");
  47
  48         /* If we could not switch, the container contains exactly one client. We return false */
  49         if (candidate == container->currently_focused)
  50                 return false;
  51
  52         /* Set focus */
  53         set_focus(conn, candidate, true);
  54
  55         return true;
  56 }
  57
  58 typedef enum { THING_WINDOW, THING_CONTAINER } thing_t;
  59
  60 static void focus_thing(xcb_connection_t *conn, direction_t direction, thing_t thing) {
  61         LOG("focusing direction %d\n", direction);
  62
  63         int new_row = current_row,
  64             new_col = current_col;
  65         Container *container = CUR_CELL;
  66         Workspace *t_ws = c_ws;
  67
  68         /* Makes sure new_col and new_row are within bounds of the new workspace */
  69         void check_colrow_boundaries() {
  70                 if (new_col >= t_ws->cols)
  71                         new_col = (t_ws->cols - 1);
  72                 if (new_row >= t_ws->rows)
  73                         new_row = (t_ws->rows - 1);
  74         }
  75
  76         /* There always is a container. If not, current_col or current_row is wrong */
  77         assert(container != NULL);
  78
  79         if (container->workspace->fullscreen_client != NULL) {
  80                 LOG("You're in fullscreen mode. Won't switch focus\n");
  81                 return;
  82         }
  83
  84         /* TODO: for horizontal default layout, this has to be expanded to LEFT/RIGHT */
  85         if (direction == D_UP || direction == D_DOWN) {
  86                 if (thing == THING_WINDOW)
  87                         /* Let’s see if we can perform up/down focus in the current container */
  88                         if (focus_window_in_container(conn, container, direction))
  89                                 return;
  90
  91                 if (direction == D_DOWN && cell_exists(current_col, current_row+1))
  92                         new_row = current_row + t_ws->table[current_col][current_row]->rowspan;
  93                 else if (direction == D_UP && cell_exists(current_col, current_row-1)) {
  94                         /* Set new_row as a sane default, but it may get overwritten in a second */
  95                         new_row--;
  96
  97                         /* Search from the top to correctly handle rowspanned containers */
  98                         for (int rows = 0; rows < current_row; rows += t_ws->table[current_col][rows]->rowspan) {
  99                                 if (new_row > (rows + (t_ws->table[current_col][rows]->rowspan - 1)))
 100                                         continue;
 101
 102                                 new_row = rows;
 103                                 break;
 104                         }
 105                 } else {
 106                         /* Let’s see if there is a screen down/up there to which we can switch */
 107                         LOG("container is at %d with height %d\n", container->y, container->height);
 108                         i3Screen *screen;
 109                         int destination_y = (direction == D_UP ? (container->y - 1) : (container->y + container->height + 1));
 110                         if ((screen = get_screen_containing(container->x, destination_y)) == NULL) {
 111                                 LOG("Wrapping screen around vertically\n");
 112                                 /* No screen found? Then wrap */
 113                                 screen = get_screen_most((direction == D_UP ? D_DOWN : D_UP));
 114                         }
 115                         t_ws = &(workspaces[screen->current_workspace]);
 116                         new_row = (direction == D_UP ? (t_ws->rows - 1) : 0);
 117                 }
 118
 119                 check_colrow_boundaries();
 120
 121                 LOG("new_col = %d, new_row = %d\n", new_col, new_row);
 122                 if (t_ws->table[new_col][new_row]->currently_focused == NULL) {
 123                         LOG("Cell empty, checking for colspanned client above...\n");
 124                         for (int cols = 0; cols < new_col; cols += t_ws->table[cols][new_row]->colspan) {
 125                                 if (new_col > (cols + (t_ws->table[cols][new_row]->colspan - 1)))
 126                                         continue;
 127
 128                                 new_col = cols;
 129                                 break;
 130                         }
 131                         LOG("Fixed it to new col %d\n", new_col);
 132                 }
 133         } else if (direction == D_LEFT || direction == D_RIGHT) {
 134                 if (direction == D_RIGHT && cell_exists(current_col+1, current_row))
 135                         new_col = current_col + t_ws->table[current_col][current_row]->colspan;
 136                 else if (direction == D_LEFT && cell_exists(current_col-1, current_row)) {
 137                         /* Set new_col as a sane default, but it may get overwritten in a second */
 138                         new_col--;
 139
 140                         /* Search from the left to correctly handle colspanned containers */
 141                         for (int cols = 0; cols < current_col; cols += t_ws->table[cols][current_row]->colspan) {
 142                                 if (new_col > (cols + (t_ws->table[cols][current_row]->colspan - 1)))
 143                                         continue;
 144
 145                                 new_col = cols;
 146                                 break;
 147                         }
 148                 } else {
 149                         /* Let’s see if there is a screen left/right here to which we can switch */
 150                         LOG("container is at %d with width %d\n", container->x, container->width);
 151                         i3Screen *screen;
 152                         int destination_x = (direction == D_LEFT ? (container->x - 1) : (container->x + container->width + 1));
 153                         if ((screen = get_screen_containing(destination_x, container->y)) == NULL) {
 154                                 LOG("Wrapping screen around horizontally\n");
 155                                 screen = get_screen_most((direction == D_LEFT ? D_RIGHT : D_LEFT));
 156                         }
 157                         t_ws = &(workspaces[screen->current_workspace]);
 158                         new_col = (direction == D_LEFT ? (t_ws->cols - 1) : 0);
 159                 }
 160
 161                 check_colrow_boundaries();
 162
 163                 LOG("new_col = %d, new_row = %d\n", new_col, new_row);
 164                 if (t_ws->table[new_col][new_row]->currently_focused == NULL) {
 165                         LOG("Cell empty, checking for rowspanned client above...\n");
 166                         for (int rows = 0; rows < new_row; rows += t_ws->table[new_col][rows]->rowspan) {
 167                                 if (new_row > (rows + (t_ws->table[new_col][rows]->rowspan - 1)))
 168                                         continue;
 169
 170                                 new_row = rows;
 171                                 break;
 172                         }
 173                         LOG("Fixed it to new row %d\n", new_row);
 174                 }
 175         } else {
 176                 LOG("direction unhandled\n");
 177                 return;
 178         }
 179
 180         check_colrow_boundaries();
 181
 182         if (t_ws->table[new_col][new_row]->currently_focused != NULL)
 183                 set_focus(conn, t_ws->table[new_col][new_row]->currently_focused, true);
 184 }
 185
 186 /*
 187  * Tries to move the window inside its current container.
 188  *
 189  * Returns true if the window could be moved, false otherwise.
 190  *
 191  */
 192 static bool move_current_window_in_container(xcb_connection_t *conn, Client *client,
 193                 direction_t direction) {
 194         assert(client->container != NULL);
 195
 196         Client *other = (direction == D_UP ? CIRCLEQ_PREV(client, clients) :
 197                                              CIRCLEQ_NEXT(client, clients));
 198
 199         if (other == CIRCLEQ_END(&(client->container->clients)))
 200                 return false;
 201
 202         LOG("i can do that\n");
 203         /* We can move the client inside its current container */
 204         CIRCLEQ_REMOVE(&(client->container->clients), client, clients);
 205         if (direction == D_UP)
 206                 CIRCLEQ_INSERT_BEFORE(&(client->container->clients), other, client, clients);
 207         else CIRCLEQ_INSERT_AFTER(&(client->container->clients), other, client, clients);
 208         render_layout(conn);
 209         return true;
 210 }
 211
 212 /*
 213  * Moves the current window or whole container to the given direction, creating a column/row if
 214  * necessary.
 215  *
 216  */
 217 static void move_current_window(xcb_connection_t *conn, direction_t direction) {
 218         LOG("moving window to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" :
 219                                             (direction == D_LEFT ? "left" : "right"))));
 220         /* Get current window */
 221         Container *container = CUR_CELL,
 222                   *new = NULL;
 223
 224         /* There has to be a container, see focus_window() */
 225         assert(container != NULL);
 226
 227         /* If there is no window or the dock window is focused, we’re done */
 228         if (container->currently_focused == NULL ||
 229             container->currently_focused->dock)
 230                 return;
 231
 232         /* As soon as the client is moved away, the last focused client in the old
 233          * container needs to get focus, if any. Therefore, we save it here. */
 234         Client *current_client = container->currently_focused;
 235         Client *to_focus = get_last_focused_client(conn, container, current_client);
 236
 237         if (to_focus == NULL) {
 238                 to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients);
 239                 if (to_focus == NULL)
 240                         to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients);
 241         }
 242
 243         switch (direction) {
 244                 case D_LEFT:
 245                         /* If we’re at the left-most position, move the rest of the table right */
 246                         if (current_col == 0) {
 247                                 expand_table_cols_at_head(c_ws);
 248                                 new = CUR_CELL;
 249                         } else
 250                                 new = CUR_TABLE[--current_col][current_row];
 251                         break;
 252                 case D_RIGHT:
 253                         if (current_col == (c_ws->cols-1))
 254                                 expand_table_cols(c_ws);
 255
 256                         new = CUR_TABLE[++current_col][current_row];
 257                         break;
 258                 case D_UP:
 259                         if (move_current_window_in_container(conn, current_client, D_UP))
 260                                 return;
 261
 262                         /* if we’re at the up-most position, move the rest of the table down */
 263                         if (current_row == 0) {
 264                                 expand_table_rows_at_head(c_ws);
 265                                 new = CUR_CELL;
 266                         } else
 267                                 new = CUR_TABLE[current_col][--current_row];
 268                         break;
 269                 case D_DOWN:
 270                         if (move_current_window_in_container(conn, current_client, D_DOWN))
 271                                 return;
 272
 273                         if (current_row == (c_ws->rows-1))
 274                                 expand_table_rows(c_ws);
 275
 276                         new = CUR_TABLE[current_col][++current_row];
 277                         break;
 278                 /* To make static analyzers happy: */
 279                 default:
 280                         return;
 281         }
 282
 283         /* Remove it from the old container and put it into the new one */
 284         client_remove_from_container(conn, current_client, container, true);
 285
 286         if (new->currently_focused != NULL)
 287                 CIRCLEQ_INSERT_AFTER(&(new->clients), new->currently_focused, current_client, clients);
 288         else CIRCLEQ_INSERT_TAIL(&(new->clients), current_client, clients);
 289         SLIST_INSERT_HEAD(&(new->workspace->focus_stack), current_client, focus_clients);
 290
 291         /* Update data structures */
 292         current_client->container = new;
 293         current_client->workspace = new->workspace;
 294         container->currently_focused = to_focus;
 295         new->currently_focused = current_client;
 296
 297         Workspace *workspace = container->workspace;
 298
 299         /* delete all empty columns/rows */
 300         cleanup_table(conn, workspace);
 301
 302         /* Fix colspan/rowspan if it’d overlap */
 303         fix_colrowspan(conn, workspace);
 304
 305         render_workspace(conn, workspace->screen, workspace);
 306         xcb_flush(conn);
 307
 308         set_focus(conn, current_client, true);
 309 }
 310
 311 static void move_current_container(xcb_connection_t *conn, direction_t direction) {
 312         LOG("moving container to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" :
 313                                             (direction == D_LEFT ? "left" : "right"))));
 314         /* Get current window */
 315         Container *container = CUR_CELL,
 316                   *new = NULL;
 317
 318         Container **old = &CUR_CELL;
 319
 320         /* There has to be a container, see focus_window() */
 321         assert(container != NULL);
 322
 323         switch (direction) {
 324                 case D_LEFT:
 325                         /* If we’re at the left-most position, move the rest of the table right */
 326                         if (current_col == 0) {
 327                                 expand_table_cols_at_head(c_ws);
 328                                 new = CUR_CELL;
 329                                 old = &CUR_TABLE[current_col+1][current_row];
 330                         } else
 331                                 new = CUR_TABLE[--current_col][current_row];
 332                         break;
 333                 case D_RIGHT:
 334                         if (current_col == (c_ws->cols-1))
 335                                 expand_table_cols(c_ws);
 336
 337                         new = CUR_TABLE[++current_col][current_row];
 338                         break;
 339                 case D_UP:
 340                         /* if we’re at the up-most position, move the rest of the table down */
 341                         if (current_row == 0) {
 342                                 expand_table_rows_at_head(c_ws);
 343                                 new = CUR_CELL;
 344                                 old = &CUR_TABLE[current_col][current_row+1];
 345                         } else
 346                                 new = CUR_TABLE[current_col][--current_row];
 347                         break;
 348                 case D_DOWN:
 349                         if (current_row == (c_ws->rows-1))
 350                                 expand_table_rows(c_ws);
 351
 352                         new = CUR_TABLE[current_col][++current_row];
 353                         break;
 354                 /* To make static analyzers happy: */
 355                 default:
 356                         return;
 357         }
 358
 359         LOG("old = %d,%d and new = %d,%d\n", container->col, container->row, new->col, new->row);
 360
 361         /* Swap the containers */
 362         int col = new->col;
 363         int row = new->row;
 364
 365         *old = new;
 366         new->col = container->col;
 367         new->row = container->row;
 368
 369         CUR_CELL = container;
 370         container->col = col;
 371         container->row = row;
 372
 373         Workspace *workspace = container->workspace;
 374
 375         /* delete all empty columns/rows */
 376         cleanup_table(conn, workspace);
 377
 378         /* Fix colspan/rowspan if it’d overlap */
 379         fix_colrowspan(conn, workspace);
 380
 381         render_layout(conn);
 382 }
 383
 384 /*
 385  * "Snaps" the current container (not possible for windows, because it works at table base)
 386  * to the given direction, that is, adjusts cellspan/rowspan
 387  *
 388  */
 389 static void snap_current_container(xcb_connection_t *conn, direction_t direction) {
 390         LOG("snapping container to direction %d\n", direction);
 391
 392         Container *container = CUR_CELL;
 393
 394         assert(container != NULL);
 395
 396         switch (direction) {
 397                 case D_LEFT:
 398                         /* Snap to the left is actually a move to the left and then a snap right */
 399                         if (!cell_exists(container->col - 1, container->row) ||
 400                             CUR_TABLE[container->col-1][container->row]->currently_focused != NULL) {
 401                                 LOG("cannot snap to left - the cell is already used\n");
 402                                 return;
 403                         }
 404
 405                         move_current_window(conn, D_LEFT);
 406                         snap_current_container(conn, D_RIGHT);
 407                         return;
 408                 case D_RIGHT: {
 409                         /* Check if the cell is used */
 410                         int new_col = container->col + container->colspan;
 411                         for (int i = 0; i < container->rowspan; i++)
 412                                 if (!cell_exists(new_col, container->row + i) ||
 413                                     CUR_TABLE[new_col][container->row + i]->currently_focused != NULL) {
 414                                         LOG("cannot snap to right - the cell is already used\n");
 415                                         return;
 416                                 }
 417
 418                         /* Check if there are other cells with rowspan, which are in our way.
 419                          * If so, reduce their rowspan. */
 420                         for (int i = container->row-1; i >= 0; i--) {
 421                                 LOG("we got cell %d, %d with rowspan %d\n",
 422                                                 new_col, i, CUR_TABLE[new_col][i]->rowspan);
 423                                 while ((CUR_TABLE[new_col][i]->rowspan-1) >= (container->row - i))
 424                                         CUR_TABLE[new_col][i]->rowspan--;
 425                                 LOG("new rowspan = %d\n", CUR_TABLE[new_col][i]->rowspan);
 426                         }
 427
 428                         container->colspan++;
 429                         break;
 430                 }
 431                 case D_UP:
 432                         if (!cell_exists(container->col, container->row - 1) ||
 433                             CUR_TABLE[container->col][container->row-1]->currently_focused != NULL) {
 434                                 LOG("cannot snap to top - the cell is already used\n");
 435                                 return;
 436                         }
 437
 438                         move_current_window(conn, D_UP);
 439                         snap_current_container(conn, D_DOWN);
 440                         return;
 441                 case D_DOWN: {
 442                         LOG("snapping down\n");
 443                         int new_row = container->row + container->rowspan;
 444                         for (int i = 0; i < container->colspan; i++)
 445                                 if (!cell_exists(container->col + i, new_row) ||
 446                                     CUR_TABLE[container->col + i][new_row]->currently_focused != NULL) {
 447                                         LOG("cannot snap down - the cell is already used\n");
 448                                         return;
 449                                 }
 450
 451                         for (int i = container->col-1; i >= 0; i--) {
 452                                 LOG("we got cell %d, %d with colspan %d\n",
 453                                                 i, new_row, CUR_TABLE[i][new_row]->colspan);
 454                                 while ((CUR_TABLE[i][new_row]->colspan-1) >= (container->col - i))
 455                                         CUR_TABLE[i][new_row]->colspan--;
 456                                 LOG("new colspan = %d\n", CUR_TABLE[i][new_row]->colspan);
 457
 458                         }
 459
 460                         container->rowspan++;
 461                         break;
 462                 }
 463                 /* To make static analyzers happy: */
 464                 default:
 465                         return;
 466         }
 467
 468         render_layout(conn);
 469 }
 470
 471 static void move_floating_window_to_workspace(xcb_connection_t *conn, Client *client, int workspace) {
 472         /* t_ws (to workspace) is just a container pointer to the workspace we’re switching to */
 473         Workspace *t_ws = &(workspaces[workspace-1]),
 474                   *old_ws = client->workspace;
 475
 476         LOG("moving floating\n");
 477
 478         if (t_ws->screen == NULL) {
 479                 LOG("initializing new workspace, setting num to %d\n", workspace-1);
 480                 t_ws->screen = c_ws->screen;
 481                 /* Copy the dimensions from the virtual screen */
 482                 memcpy(&(t_ws->rect), &(t_ws->screen->rect), sizeof(Rect));
 483         } else {
 484                 /* Check if there is already a fullscreen client on the destination workspace and
 485                  * stop moving if so. */
 486                 if (client->fullscreen && (t_ws->fullscreen_client != NULL)) {
 487                         LOG("Not moving: Fullscreen client already existing on destination workspace.\n");
 488                         return;
 489                 }
 490         }
 491
 492         floating_assign_to_workspace(client, t_ws);
 493
 494         /* If we’re moving it to an invisible screen, we need to unmap it */
 495         if (!workspace_is_visible(t_ws)) {
 496                 LOG("This workspace is not visible, unmapping\n");
 497                 xcb_unmap_window(conn, client->frame);
 498         } else {
 499                 /* If this is not the case, we move the window to a workspace
 500                  * which is on another screen, so we also need to adjust its
 501                  * coordinates. */
 502                 LOG("before x = %d, y = %d\n", client->rect.x, client->rect.y);
 503                 uint32_t relative_x = client->rect.x - old_ws->rect.x,
 504                          relative_y = client->rect.y - old_ws->rect.y;
 505                 LOG("rel_x = %d, rel_y = %d\n", relative_x, relative_y);
 506                 client->rect.x = t_ws->rect.x + relative_x;
 507                 client->rect.y = t_ws->rect.y + relative_y;
 508                 LOG("after x = %d, y = %d\n", client->rect.x, client->rect.y);
 509                 reposition_client(conn, client);
 510                 xcb_flush(conn);
 511         }
 512
 513         LOG("done\n");
 514
 515         render_layout(conn);
 516
 517         if (workspace_is_visible(t_ws))
 518                 set_focus(conn, client, true);
 519 }
 520
 521 /*
 522  * Moves the currently selected window to the given workspace
 523  *
 524  */
 525 static void move_current_window_to_workspace(xcb_connection_t *conn, int workspace) {
 526         LOG("Moving current window to workspace %d\n", workspace);
 527
 528         Container *container = CUR_CELL;
 529
 530         assert(container != NULL);
 531
 532         /* t_ws (to workspace) is just a container pointer to the workspace we’re switching to */
 533         Workspace *t_ws = &(workspaces[workspace-1]);
 534
 535         Client *current_client = container->currently_focused;
 536         if (current_client == NULL) {
 537                 LOG("No currently focused client in current container.\n");
 538                 return;
 539         }
 540         Client *to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients);
 541         if (to_focus == NULL)
 542                 to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients);
 543
 544         if (t_ws->screen == NULL) {
 545                 LOG("initializing new workspace, setting num to %d\n", workspace-1);
 546                 t_ws->screen = container->workspace->screen;
 547                 /* Copy the dimensions from the virtual screen */
 548                 memcpy(&(t_ws->rect), &(container->workspace->screen->rect), sizeof(Rect));
 549         } else {
 550                 /* Check if there is already a fullscreen client on the destination workspace and
 551                  * stop moving if so. */
 552                 if (current_client->fullscreen && (t_ws->fullscreen_client != NULL)) {
 553                         LOG("Not moving: Fullscreen client already existing on destination workspace.\n");
 554                         return;
 555                 }
 556         }
 557
 558         Container *to_container = t_ws->table[t_ws->current_col][t_ws->current_row];
 559
 560         assert(to_container != NULL);
 561
 562         client_remove_from_container(conn, current_client, container, true);
 563         if (container->workspace->fullscreen_client == current_client)
 564                 container->workspace->fullscreen_client = NULL;
 565
 566         /* TODO: insert it to the correct position */
 567         CIRCLEQ_INSERT_TAIL(&(to_container->clients), current_client, clients);
 568
 569         SLIST_INSERT_HEAD(&(to_container->workspace->focus_stack), current_client, focus_clients);
 570         LOG("Moved.\n");
 571
 572         current_client->container = to_container;
 573         current_client->workspace = to_container->workspace;
 574         container->currently_focused = to_focus;
 575         to_container->currently_focused = current_client;
 576
 577         /* If we’re moving it to an invisible screen, we need to unmap it */
 578         if (!workspace_is_visible(to_container->workspace)) {
 579                 LOG("This workspace is not visible, unmapping\n");
 580                 xcb_unmap_window(conn, current_client->frame);
 581         } else {
 582                 if (current_client->fullscreen) {
 583                         LOG("Calling client_enter_fullscreen again\n");
 584                         client_enter_fullscreen(conn, current_client);
 585                 }
 586         }
 587
 588         /* delete all empty columns/rows */
 589         cleanup_table(conn, container->workspace);
 590
 591         render_layout(conn);
 592
 593         if (workspace_is_visible(to_container->workspace))
 594                 set_focus(conn, current_client, true);
 595 }
 596
 597 /*
 598  * Switches to the given workspace
 599  *
 600  */
 601 void show_workspace(xcb_connection_t *conn, int workspace) {
 602         Client *client;
 603         bool need_warp = false;
 604         xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
 605         /* t_ws (to workspace) is just a convenience pointer to the workspace we’re switching to */
 606         Workspace *t_ws = &(workspaces[workspace-1]);
 607
 608         LOG("show_workspace(%d)\n", workspace);
 609
 610         /* Store current_row/current_col */
 611         c_ws->current_row = current_row;
 612         c_ws->current_col = current_col;
 613
 614         /* Check if the workspace has not been used yet */
 615         if (t_ws->screen == NULL) {
 616                 LOG("initializing new workspace, setting num to %d\n", workspace);
 617                 t_ws->screen = c_ws->screen;
 618                 /* Copy the dimensions from the virtual screen */
 619                 memcpy(&(t_ws->rect), &(t_ws->screen->rect), sizeof(Rect));
 620         }
 621
 622         if (c_ws->screen != t_ws->screen) {
 623                 /* We need to switch to the other screen first */
 624                 LOG("moving over to other screen.\n");
 625
 626                 /* Store the old client */
 627                 Client *old_client = CUR_CELL->currently_focused;
 628
 629                 c_ws = &(workspaces[t_ws->screen->current_workspace]);
 630                 current_col = c_ws->current_col;
 631                 current_row = c_ws->current_row;
 632                 if (CUR_CELL->currently_focused != NULL)
 633                         need_warp = true;
 634                 else {
 635                         Rect *dims = &(c_ws->screen->rect);
 636                         xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0,
 637                                          dims->x + (dims->width / 2), dims->y + (dims->height / 2));
 638                 }
 639
 640                 /* Re-decorate the old client, it’s not focused anymore */
 641                 if ((old_client != NULL) && !old_client->dock)
 642                         redecorate_window(conn, old_client);
 643                 else xcb_flush(conn);
 644         }
 645
 646         /* Check if we need to change something or if we’re already there */
 647         if (c_ws->screen->current_workspace == (workspace-1)) {
 648                 Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
 649                 if (last_focused != SLIST_END(&(c_ws->focus_stack))) {
 650                         set_focus(conn, last_focused, true);
 651                         if (need_warp) {
 652                                 client_warp_pointer_into(conn, last_focused);
 653                                 xcb_flush(conn);
 654                         }
 655                 }
 656
 657                 return;
 658         }
 659
 660         t_ws->screen->current_workspace = workspace-1;
 661         Workspace *old_workspace = c_ws;
 662         c_ws = &workspaces[workspace-1];
 663
 664         /* Unmap all clients of the old workspace */
 665         unmap_workspace(conn, old_workspace);
 666
 667         current_row = c_ws->current_row;
 668         current_col = c_ws->current_col;
 669         LOG("new current row = %d, current col = %d\n", current_row, current_col);
 670
 671         ignore_enter_notify_forall(conn, c_ws, true);
 672
 673         /* Map all clients on the new workspace */
 674         FOR_TABLE(c_ws)
 675                 CIRCLEQ_FOREACH(client, &(c_ws->table[cols][rows]->clients), clients)
 676                         xcb_map_window(conn, client->frame);
 677
 678         /* Map all floating clients */
 679         if (!c_ws->floating_hidden)
 680                 TAILQ_FOREACH(client, &(c_ws->floating_clients), floating_clients)
 681                         xcb_map_window(conn, client->frame);
 682
 683         /* Map all stack windows, if any */
 684         struct Stack_Window *stack_win;
 685         SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
 686                 if (stack_win->container->workspace == c_ws)
 687                         xcb_map_window(conn, stack_win->window);
 688
 689         ignore_enter_notify_forall(conn, c_ws, false);
 690
 691         /* Restore focus on the new workspace */
 692         Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
 693         if (last_focused != SLIST_END(&(c_ws->focus_stack))) {
 694                 set_focus(conn, last_focused, true);
 695                 if (need_warp) {
 696                         client_warp_pointer_into(conn, last_focused);
 697                         xcb_flush(conn);
 698                 }
 699         } else xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
 700
 701         render_layout(conn);
 702 }
 703
 704 /*
 705  * Jumps to the given window class / title.
 706  * Title is matched using strstr, that is, matches if it appears anywhere
 707  * in the string. Regular expressions seem to be a bit overkill here. However,
 708  * if we need them for something else somewhen, we may introduce them here, too.
 709  *
 710  */
 711 static void jump_to_window(xcb_connection_t *conn, const char *arguments) {
 712         char *classtitle;
 713         Client *client;
 714
 715         /* The first character is a quote, this was checked before */
 716         classtitle = sstrdup(arguments+1);
 717         /* The last character is a quote, we just set it to NULL */
 718         classtitle[strlen(classtitle)-1] = '\0';
 719
 720         if ((client = get_matching_client(conn, classtitle, NULL)) == NULL) {
 721                 free(classtitle);
 722                 LOG("No matching client found.\n");
 723                 return;
 724         }
 725
 726         free(classtitle);
 727         set_focus(conn, client, true);
 728 }
 729
 730 /*
 731  * Jump directly to the specified workspace, row and col.
 732  * Great for reaching windows that you always keep in the same spot (hello irssi, I'm looking at you)
 733  *
 734  */
 735 static void jump_to_container(xcb_connection_t *conn, const char *arguments) {
 736         int ws, row, col;
 737         int result;
 738
 739         result = sscanf(arguments, "%d %d %d", &ws, &col, &row);
 740         LOG("Jump called with %d parameters (\"%s\")\n", result, arguments);
 741
 742         /* No match? Either no arguments were specified, or no numbers */
 743         if (result < 1) {
 744                 LOG("At least one valid argument required\n");
 745                 return;
 746         }
 747
 748         /* Move to the target workspace */
 749         show_workspace(conn, ws);
 750
 751         if (result < 3)
 752                 return;
 753
 754         LOG("Boundary-checking col %d, row %d... (max cols %d, max rows %d)\n", col, row, c_ws->cols, c_ws->rows);
 755
 756         /* Move to row/col */
 757         if (row >= c_ws->rows)
 758                 row = c_ws->rows - 1;
 759         if (col >= c_ws->cols)
 760                 col = c_ws->cols - 1;
 761
 762         LOG("Jumping to col %d, row %d\n", col, row);
 763         if (c_ws->table[col][row]->currently_focused != NULL)
 764                 set_focus(conn, c_ws->table[col][row]->currently_focused, true);
 765 }
 766
 767 /*
 768  * Travels the focus stack by the given number of times (or once, if no argument
 769  * was specified). That is, selects the window you were in before you focused
 770  * the current window.
 771  *
 772  * The special values 'floating' (select the next floating window), 'tiling'
 773  * (select the next tiling window), 'ft' (if the current window is floating,
 774  * select the next tiling window and vice-versa) are also valid
 775  *
 776  */
 777 static void travel_focus_stack(xcb_connection_t *conn, const char *arguments) {
 778         /* Start count at -1 to always skip the first element */
 779         int times, count = -1;
 780         Client *current;
 781         bool floating_criteria;
 782
 783         /* Either it’s one of the special values… */
 784         if (strcasecmp(arguments, "floating") == 0) {
 785                 floating_criteria = true;
 786         } else if (strcasecmp(arguments, "tiling") == 0) {
 787                 floating_criteria = false;
 788         } else if (strcasecmp(arguments, "ft") == 0) {
 789                 Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
 790                 if (last_focused == SLIST_END(&(c_ws->focus_stack))) {
 791                         LOG("Cannot select the next floating/tiling client because there is no client at all\n");
 792                         return;
 793                 }
 794
 795                 floating_criteria = !client_is_floating(last_focused);
 796         } else {
 797                 /* …or a number was specified */
 798                 if (sscanf(arguments, "%u", &times) != 1) {
 799                         LOG("No or invalid argument given (\"%s\"), using default of 1 times\n", arguments);
 800                         times = 1;
 801                 }
 802
 803                 SLIST_FOREACH(current, &(CUR_CELL->workspace->focus_stack), focus_clients) {
 804                         if (++count < times) {
 805                                 LOG("Skipping\n");
 806                                 continue;
 807                         }
 808
 809                         LOG("Focussing\n");
 810                         set_focus(conn, current, true);
 811                         break;
 812                 }
 813                 return;
 814         }
 815
 816         /* Select the next client matching the criteria parsed above */
 817         SLIST_FOREACH(current, &(CUR_CELL->workspace->focus_stack), focus_clients)
 818                 if (client_is_floating(current) == floating_criteria) {
 819                         set_focus(conn, current, true);
 820                         break;
 821                 }
 822 }
 823
 824 /*
 825  * Goes through the list of arguments (for exec()) and checks if the given argument
 826  * is present. If not, it copies the arguments (because we cannot realloc it) and
 827  * appends the given argument.
 828  *
 829  */
 830 static char **append_argument(char **original, char *argument) {
 831         int num_args;
 832         for (num_args = 0; original[num_args] != NULL; num_args++) {
 833                 LOG("original argument: \"%s\"\n", original[num_args]);
 834                 /* If the argument is already present we return the original pointer */
 835                 if (strcmp(original[num_args], argument) == 0)
 836                         return original;
 837         }
 838         /* Copy the original array */
 839         char **result = smalloc((num_args+2) * sizeof(char*));
 840         memcpy(result, original, num_args * sizeof(char*));
 841         result[num_args] = argument;
 842         result[num_args+1] = NULL;
 843
 844         return result;
 845 }
 846
 847 /*
 848  * Switch to next or previous existing workspace
 849  *
 850  */
 851 static void next_previous_workspace(xcb_connection_t *conn, int direction) {
 852         Workspace *t_ws;
 853         int i;
 854
 855         if (direction == 'n') {
 856                 /* If we are on the last workspace, we cannot go any further */
 857                 if (c_ws->num == 9)
 858                         return;
 859
 860                 for (i = c_ws->num + 1; i <= 9; i++) {
 861                         t_ws = &(workspaces[i]);
 862                         if (t_ws->screen != NULL)
 863                                 break;
 864                 }
 865         } else if (direction == 'p') {
 866                 if (c_ws->num == 0)
 867                         return;
 868                 for (i = c_ws->num - 1; i >= 0 ; i--) {
 869                         t_ws = &(workspaces[i]);
 870                         if (t_ws->screen != NULL)
 871                                 break;
 872                 }
 873         }
 874
 875         if (t_ws->screen != NULL)
 876                 show_workspace(conn, i+1);
 877 }
 878
 879 /*
 880  * Parses a command, see file CMDMODE for more information
 881  *
 882  */
 883 void parse_command(xcb_connection_t *conn, const char *command) {
 884         LOG("--- parsing command \"%s\" ---\n", command);
 885         /* Get the first client from focus stack because floating clients are not
 886          * in any container, therefore CUR_CELL is not appropriate. */
 887         Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
 888         if (last_focused == SLIST_END(&(c_ws->focus_stack)))
 889                 last_focused = NULL;
 890
 891         /* Hmm, just to be sure */
 892         if (command[0] == '\0')
 893                 return;
 894
 895         /* Is it an <exec>? Then execute the given command. */
 896         if (STARTS_WITH(command, "exec ")) {
 897                 LOG("starting \"%s\"\n", command + strlen("exec "));
 898                 start_application(command+strlen("exec "));
 899                 return;
 900         }
 901
 902         /* Is it an <exit>? */
 903         if (STARTS_WITH(command, "exit")) {
 904                 LOG("User issued exit-command, exiting without error.\n");
 905                 exit(EXIT_SUCCESS);
 906         }
 907
 908         /* Is it a <reload>? */
 909         if (STARTS_WITH(command, "reload")) {
 910                 load_configuration(conn, NULL, true);
 911                 return;
 912         }
 913
 914         /* Is it <restart>? Then restart in place. */
 915         if (STARTS_WITH(command, "restart")) {
 916                 LOG("restarting \"%s\"...\n", start_argv[0]);
 917                 /* make sure -a is in the argument list or append it */
 918                 start_argv = append_argument(start_argv, "-a");
 919
 920                 execvp(start_argv[0], start_argv);
 921                 /* not reached */
 922         }
 923
 924         if (STARTS_WITH(command, "kill")) {
 925                 if (last_focused == NULL) {
 926                         LOG("There is no window to kill\n");
 927                         return;
 928                 }
 929
 930                 LOG("Killing current window\n");
 931                 client_kill(conn, last_focused);
 932                 return;
 933         }
 934
 935         /* Is it a jump to a specified workspace, row, col? */
 936         if (STARTS_WITH(command, "jump ")) {
 937                 const char *arguments = command + strlen("jump ");
 938                 if (arguments[0] == '"')
 939                         jump_to_window(conn, arguments);
 940                 else jump_to_container(conn, arguments);
 941                 return;
 942         }
 943
 944         /* Should we travel the focus stack? */
 945         if (STARTS_WITH(command, "focus")) {
 946                 const char *arguments = command + strlen("focus ");
 947                 travel_focus_stack(conn, arguments);
 948                 return;
 949         }
 950
 951         /* Is it 'f' for fullscreen? */
 952         if (command[0] == 'f') {
 953                 if (last_focused == NULL)
 954                         return;
 955                 client_toggle_fullscreen(conn, last_focused);
 956                 return;
 957         }
 958
 959         /* Is it just 's' for stacking or 'd' for default? */
 960         if ((command[0] == 's' || command[0] == 'd') && (command[1] == '\0')) {
 961                 if (last_focused == NULL || client_is_floating(last_focused)) {
 962                         LOG("not switching, this is a floating client\n");
 963                         return;
 964                 }
 965                 LOG("Switching mode for current container\n");
 966                 switch_layout_mode(conn, CUR_CELL, (command[0] == 's' ? MODE_STACK : MODE_DEFAULT));
 967                 return;
 968         }
 969
 970         /* Is it 'bn' (border normal), 'bp' (border 1pixel) or 'bb' (border borderless)? */
 971         if (command[0] == 'b') {
 972                 if (last_focused == NULL) {
 973                         LOG("No window focused, cannot change border type\n");
 974                         return;
 975                 }
 976                 client_change_border(conn, last_focused, command[1]);
 977                 return;
 978         }
 979
 980         if (command[0] == 'H') {
 981                 LOG("Hiding all floating windows\n");
 982                 floating_toggle_hide(conn, c_ws);
 983                 return;
 984         }
 985
 986         enum { WITH_WINDOW, WITH_CONTAINER, WITH_WORKSPACE } with = WITH_WINDOW;
 987
 988         /* Is it a <with>? */
 989         if (command[0] == 'w') {
 990                 command++;
 991                 /* TODO: implement */
 992                 if (command[0] == 'c') {
 993                         with = WITH_CONTAINER;
 994                         command++;
 995                 } else if (command[0] == 'w') {
 996                         with = WITH_WORKSPACE;
 997                         command++;
 998                 } else {
 999                         LOG("not yet implemented.\n");
1000                         return;
1001                 }
1002         }
1003
1004         /* Is it 't' for toggle tiling/floating? */
1005         if (command[0] == 't') {
1006                 if (with == WITH_WORKSPACE) {
1007                         c_ws->auto_float = !c_ws->auto_float;
1008                         LOG("autofloat is now %d\n", c_ws->auto_float);
1009                         return;
1010                 }
1011                 if (last_focused == NULL) {
1012                         LOG("Cannot toggle tiling/floating: workspace empty\n");
1013                         return;
1014                 }
1015
1016                 toggle_floating_mode(conn, last_focused, false);
1017                 /* delete all empty columns/rows */
1018                 cleanup_table(conn, last_focused->workspace);
1019
1020                 /* Fix colspan/rowspan if it’d overlap */
1021                 fix_colrowspan(conn, last_focused->workspace);
1022
1023                 render_workspace(conn, last_focused->workspace->screen, last_focused->workspace);
1024
1025                 /* Re-focus the client because cleanup_table sets the focus to the last
1026                  * focused client inside a container only. */
1027                 set_focus(conn, last_focused, true);
1028
1029                 return;
1030         }
1031
1032         /* Is it 'n' or 'p' for next/previous workspace? (nw) */
1033         if (command[0] == 'n' && command[1] == 'w') {
1034                next_previous_workspace(conn, command[0]);
1035                return;
1036         }
1037
1038         if (command[0] == 'p' && command[1] == 'w') {
1039                next_previous_workspace(conn, command[0]);
1040                return;
1041         }
1042
1043         /* It’s a normal <cmd> */
1044         char *rest = NULL;
1045         enum { ACTION_FOCUS, ACTION_MOVE, ACTION_SNAP } action = ACTION_FOCUS;
1046         direction_t direction;
1047         int times = strtol(command, &rest, 10);
1048         if (rest == NULL) {
1049                 LOG("Invalid command (\"%s\")\n", command);
1050                 return;
1051         }
1052
1053         if (*rest == '\0') {
1054                 /* No rest? This was a workspace number, not a times specification */
1055                 show_workspace(conn, times);
1056                 return;
1057         }
1058
1059         if (*rest == 'm' || *rest == 's') {
1060                 action = (*rest == 'm' ? ACTION_MOVE : ACTION_SNAP);
1061                 rest++;
1062         }
1063
1064         int workspace = strtol(rest, &rest, 10);
1065
1066         if (rest == NULL) {
1067                 LOG("Invalid command (\"%s\")\n", command);
1068                 return;
1069         }
1070
1071         if (*rest == '\0') {
1072                 if (last_focused != NULL && client_is_floating(last_focused))
1073                         move_floating_window_to_workspace(conn, last_focused, workspace);
1074                 else move_current_window_to_workspace(conn, workspace);
1075                 return;
1076         }
1077
1078         if (last_focused == NULL) {
1079                 LOG("Not performing (no window found)\n");
1080                 return;
1081         }
1082
1083         if (client_is_floating(last_focused) &&
1084             (action != ACTION_FOCUS && action != ACTION_MOVE)) {
1085                 LOG("Not performing (floating)\n");
1086                 return;
1087         }
1088
1089         /* Now perform action to <where> */
1090         while (*rest != '\0') {
1091                 if (*rest == 'h')
1092                         direction = D_LEFT;
1093                 else if (*rest == 'j')
1094                         direction = D_DOWN;
1095                 else if (*rest == 'k')
1096                         direction = D_UP;
1097                 else if (*rest == 'l')
1098                         direction = D_RIGHT;
1099                 else {
1100                         LOG("unknown direction: %c\n", *rest);
1101                         return;
1102                 }
1103                 rest++;
1104
1105                 if (action == ACTION_FOCUS) {
1106                         if (client_is_floating(last_focused)) {
1107                                 floating_focus_direction(conn, last_focused, direction);
1108                                 continue;
1109                         }
1110                         focus_thing(conn, direction, (with == WITH_WINDOW ? THING_WINDOW : THING_CONTAINER));
1111                         continue;
1112                 }
1113
1114                 if (action == ACTION_MOVE) {
1115                         if (client_is_floating(last_focused)) {
1116                                 floating_move(conn, last_focused, direction);
1117                                 continue;
1118                         }
1119                         if (with == WITH_WINDOW)
1120                                 move_current_window(conn, direction);
1121                         else move_current_container(conn, direction);
1122                         continue;
1123                 }
1124
1125                 if (action == ACTION_SNAP) {
1126                         snap_current_container(conn, direction);
1127                         continue;
1128                 }
1129         }
1130
1131         LOG("--- done ---\n");
1132 }