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

   1 /*
   2  * vim:ts=4:sw=4:expandtab
   3  *
   4  * i3 - an improved dynamic tiling window manager
   5  * © 2009-2010 Michael Stapelberg and contributors (see also: LICENSE)
   6  *
   7  * manage.c: Contains all functions for initially managing new windows
   8  *           (or existing ones on restart).
   9  *
  10  */
  11
  12 #include "all.h"
  13
  14 /*
  15  * Go through all existing windows (if the window manager is restarted) and manage them
  16  *
  17  */
  18 void manage_existing_windows(xcb_window_t root) {
  19     xcb_query_tree_reply_t *reply;
  20     int i, len;
  21     xcb_window_t *children;
  22     xcb_get_window_attributes_cookie_t *cookies;
  23
  24     /* Get the tree of windows whose parent is the root window (= all) */
  25     if ((reply = xcb_query_tree_reply(conn, xcb_query_tree(conn, root), 0)) == NULL)
  26         return;
  27
  28     len = xcb_query_tree_children_length(reply);
  29     cookies = smalloc(len * sizeof(*cookies));
  30
  31     /* Request the window attributes for every window */
  32     children = xcb_query_tree_children(reply);
  33     for (i = 0; i < len; ++i)
  34         cookies[i] = xcb_get_window_attributes(conn, children[i]);
  35
  36     /* Call manage_window with the attributes for every window */
  37     for (i = 0; i < len; ++i)
  38         manage_window(children[i], cookies[i], true);
  39
  40     free(reply);
  41     free(cookies);
  42 }
  43
  44 /*
  45  * Restores the geometry of each window by reparenting it to the root window
  46  * at the position of its frame.
  47  *
  48  * This is to be called *only* before exiting/restarting i3 because of evil
  49  * side-effects which are to be expected when continuing to run i3.
  50  *
  51  */
  52 void restore_geometry() {
  53     LOG("Restoring geometry\n");
  54
  55     Con *con;
  56     TAILQ_FOREACH(con, &all_cons, all_cons)
  57         if (con->window) {
  58             printf("placing window at %d %d\n", con->rect.x, con->rect.y);
  59             xcb_reparent_window(conn, con->window->id, root,
  60                                 con->rect.x, con->rect.y);
  61         }
  62
  63     /* Make sure our changes reach the X server, we restart/exit now */
  64     xcb_flush(conn);
  65 }
  66
  67 /*
  68  * Do some sanity checks and then reparent the window.
  69  *
  70  */
  71 void manage_window(xcb_window_t window, xcb_get_window_attributes_cookie_t cookie,
  72                    bool needs_to_be_mapped) {
  73     xcb_drawable_t d = { window };
  74     xcb_get_geometry_cookie_t geomc;
  75     xcb_get_geometry_reply_t *geom;
  76     xcb_get_window_attributes_reply_t *attr = 0;
  77
  78     printf("---> looking at window 0x%08x\n", window);
  79
  80     xcb_get_property_cookie_t wm_type_cookie, strut_cookie, state_cookie,
  81                               utf8_title_cookie, title_cookie,
  82                               class_cookie, leader_cookie;
  83
  84     wm_type_cookie = xcb_get_any_property_unchecked(conn, false, window, atoms[_NET_WM_WINDOW_TYPE], UINT32_MAX);
  85     strut_cookie = xcb_get_any_property_unchecked(conn, false, window, atoms[_NET_WM_STRUT_PARTIAL], UINT32_MAX);
  86     state_cookie = xcb_get_any_property_unchecked(conn, false, window, atoms[_NET_WM_STATE], UINT32_MAX);
  87     utf8_title_cookie = xcb_get_any_property_unchecked(conn, false, window, atoms[_NET_WM_NAME], 128);
  88     leader_cookie = xcb_get_any_property_unchecked(conn, false, window, atoms[WM_CLIENT_LEADER], UINT32_MAX);
  89     title_cookie = xcb_get_any_property_unchecked(conn, false, window, WM_NAME, 128);
  90     class_cookie = xcb_get_any_property_unchecked(conn, false, window, WM_CLASS, 128);
  91
  92
  93     geomc = xcb_get_geometry(conn, d);
  94
  95     /* Check if the window is mapped (it could be not mapped when intializing and
  96        calling manage_window() for every window) */
  97     if ((attr = xcb_get_window_attributes_reply(conn, cookie, 0)) == NULL) {
  98         LOG("Could not get attributes\n");
  99         return;
 100     }
 101
 102     if (needs_to_be_mapped && attr->map_state != XCB_MAP_STATE_VIEWABLE) {
 103         LOG("map_state unviewable\n");
 104         goto out;
 105     }
 106
 107     /* Don’t manage clients with the override_redirect flag */
 108     LOG("override_redirect is %d\n", attr->override_redirect);
 109     if (attr->override_redirect)
 110         goto out;
 111
 112     /* Check if the window is already managed */
 113     if (con_by_window_id(window) != NULL) {
 114         LOG("already managed\n");
 115         goto out;
 116     }
 117
 118     /* Get the initial geometry (position, size, …) */
 119     if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) == NULL) {
 120         LOG("could not get geometry\n");
 121         goto out;
 122     }
 123
 124     LOG("reparenting!\n");
 125     uint32_t mask = 0;
 126     uint32_t values[1];
 127     mask = XCB_CW_EVENT_MASK;
 128     values[0] = CHILD_EVENT_MASK;
 129     xcb_change_window_attributes(conn, window, mask, values);
 130
 131     i3Window *cwindow = scalloc(sizeof(i3Window));
 132     cwindow->id = window;
 133
 134     /* update as much information as possible so far (some replies may be NULL) */
 135     window_update_class(cwindow, xcb_get_property_reply(conn, class_cookie, NULL));
 136     window_update_name_legacy(cwindow, xcb_get_property_reply(conn, title_cookie, NULL));
 137     window_update_name(cwindow, xcb_get_property_reply(conn, utf8_title_cookie, NULL));
 138
 139     Con *nc;
 140     Match *match;
 141
 142     /* TODO: assignments */
 143     /* TODO: two matches for one container */
 144     /* See if any container swallows this new window */
 145     nc = con_for_window(cwindow, &match);
 146     if (nc == NULL) {
 147         if (focused->type == CT_CON && con_accepts_window(focused)) {
 148             LOG("using current container, focused = %p, focused->name = %s\n",
 149                             focused, focused->name);
 150             nc = focused;
 151         } else nc = tree_open_con(NULL);
 152     } else {
 153         if (match != NULL && match->insert_where == M_ACTIVE) {
 154             /* We need to go down the focus stack starting from nc */
 155             while (TAILQ_FIRST(&(nc->focus_head)) != TAILQ_END(&(nc->focus_head))) {
 156                 printf("walking down one step...\n");
 157                 nc = TAILQ_FIRST(&(nc->focus_head));
 158             }
 159             /* We need to open a new con */
 160             /* TODO: make a difference between match-once containers (directly assign
 161              * cwindow) and match-multiple (tree_open_con first) */
 162             nc = tree_open_con(nc->parent);
 163         }
 164     }
 165     nc->window = cwindow;
 166     x_reinit(nc);
 167
 168     xcb_void_cookie_t rcookie = xcb_reparent_window_checked(conn, window, nc->frame, 0, 0);
 169     if (xcb_request_check(conn, rcookie) != NULL) {
 170         LOG("Could not reparent the window, aborting\n");
 171         goto out;
 172     }
 173
 174     LOG("ignoring sequence %d for reparenting!\n", rcookie.sequence);
 175     add_ignore_event(rcookie.sequence);
 176
 177     xcb_get_property_reply_t *reply = xcb_get_property_reply(conn, state_cookie, NULL);
 178     if (xcb_reply_contains_atom(reply, atoms[_NET_WM_STATE_FULLSCREEN]))
 179         con_toggle_fullscreen(nc);
 180
 181     reply = xcb_get_property_reply(conn, wm_type_cookie, NULL);
 182     if (xcb_reply_contains_atom(reply, atoms[_NET_WM_WINDOW_TYPE_DOCK]))
 183         LOG("this window is a dock\n");
 184
 185     if (xcb_reply_contains_atom(reply, atoms[_NET_WM_WINDOW_TYPE_DIALOG]) ||
 186         xcb_reply_contains_atom(reply, atoms[_NET_WM_WINDOW_TYPE_UTILITY]) ||
 187         xcb_reply_contains_atom(reply, atoms[_NET_WM_WINDOW_TYPE_TOOLBAR]) ||
 188         xcb_reply_contains_atom(reply, atoms[_NET_WM_WINDOW_TYPE_SPLASH]))
 189         LOG("This window is a dialog window\n");
 190
 191
 192     /* Put the client inside the save set. Upon termination (whether killed or
 193      * normal exit does not matter) of the window manager, these clients will
 194      * be correctly reparented to their most closest living ancestor (=
 195      * cleanup) */
 196     xcb_change_save_set(conn, XCB_SET_MODE_INSERT, window);
 197
 198     tree_render();
 199
 200     free(geom);
 201 out:
 202     free(attr);
 203     return;
 204 }
 205
 206 #if 0
 207 void reparent_window(xcb_connection_t *conn, xcb_window_t child,
 208                      xcb_visualid_t visual, xcb_window_t root, uint8_t depth,
 209                      int16_t x, int16_t y, uint16_t width, uint16_t height,
 210                      uint32_t border_width) {
 211
 212        /* Minimum useful size for managed windows is 75x50 (primarily affects floating) */
 213         width = max(width, 75);
 214         height = max(height, 50);
 215
 216         if (config.default_border != NULL)
 217                 client_init_border(conn, new, config.default_border[1]);
 218
 219         /* We need to grab the mouse buttons for click to focus */
 220         xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
 221                         XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
 222                         1 /* left mouse button */,
 223                         XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
 224
 225         xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
 226                         XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
 227                         3 /* right mouse button */,
 228                         XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
 229
 230         if (dock) {
 231             DLOG("Window is a dock.\n");
 232             Output *t_out = get_output_containing(x, y);
 233             if (t_out != c_ws->output) {
 234                     DLOG("Dock client requested to be on output %s by geometry (%d, %d)\n",
 235                                     t_out->name, x, y);
 236                     new->workspace = t_out->current_workspace;
 237             }
 238             new->dock = true;
 239             new->borderless = true;
 240             new->titlebar_position = TITLEBAR_OFF;
 241             new->force_reconfigure = true;
 242             new->container = NULL;
 243             SLIST_INSERT_HEAD(&(t_out->dock_clients), new, dock_clients);
 244             /* If it’s a dock we can’t make it float, so we break */
 245             new->floating = FLOATING_AUTO_OFF;
 246         }
 247
 248         /* All clients which have a leader should be floating */
 249         if (!new->dock && !client_is_floating(new) && new->leader != 0) {
 250                 DLOG("Client has WM_CLIENT_LEADER hint set, setting floating\n");
 251                 new->floating = FLOATING_AUTO_ON;
 252         }
 253
 254         if (new->workspace->auto_float) {
 255                 new->floating = FLOATING_AUTO_ON;
 256                 DLOG("workspace is in autofloat mode, setting floating\n");
 257         }
 258
 259         if (new->dock) {
 260                 /* Get _NET_WM_STRUT_PARTIAL to determine the client’s requested height */
 261                 uint32_t *strut;
 262                 preply = xcb_get_property_reply(conn, strut_cookie, NULL);
 263                 if (preply != NULL && preply->value_len > 0 && (strut = xcb_get_property_value(preply))) {
 264                         /* We only use a subset of the provided values, namely the reserved space at the top/bottom
 265                            of the screen. This is because the only possibility for bars is at to be at the top/bottom
 266                            with maximum horizontal size.
 267                            TODO: bars at the top */
 268                         new->desired_height = strut[3];
 269                         if (new->desired_height == 0) {
 270                                 DLOG("Client wanted to be 0 pixels high, using the window's height (%d)\n", original_height);
 271                                 new->desired_height = original_height;
 272                         }
 273                         DLOG("the client wants to be %d pixels high\n", new->desired_height);
 274                 } else {
 275                         DLOG("The client didn't specify space to reserve at the screen edge, using its height (%d)\n", original_height);
 276                         new->desired_height = original_height;
 277                 }
 278         } else {
 279                 /* If it’s not a dock, we can check on which workspace we should put it. */
 280
 281                 /* Firstly, we need to get the window’s class / title. We asked for the properties at the
 282                  * top of this function, get them now and pass them to our callback function for window class / title
 283                  * changes. It is important that the client was already inserted into the by_child table,
 284                  * because the callbacks won’t work otherwise. */
 285                 preply = xcb_get_property_reply(conn, utf8_title_cookie, NULL);
 286                 handle_windowname_change(NULL, conn, 0, new->child, atoms[_NET_WM_NAME], preply);
 287
 288                 preply = xcb_get_property_reply(conn, title_cookie, NULL);
 289                 handle_windowname_change_legacy(NULL, conn, 0, new->child, WM_NAME, preply);
 290
 291                 preply = xcb_get_property_reply(conn, class_cookie, NULL);
 292                 handle_windowclass_change(NULL, conn, 0, new->child, WM_CLASS, preply);
 293
 294                 preply = xcb_get_property_reply(conn, leader_cookie, NULL);
 295                 handle_clientleader_change(NULL, conn, 0, new->child, atoms[WM_CLIENT_LEADER], preply);
 296
 297                 /* if WM_CLIENT_LEADER is set, we put the new window on the
 298                  * same window as its leader. This might be overwritten by
 299                  * assignments afterwards. */
 300                 if (new->leader != XCB_NONE) {
 301                         DLOG("client->leader is set (to 0x%08x)\n", new->leader);
 302                         Client *parent = table_get(&by_child, new->leader);
 303                         if (parent != NULL && parent->container != NULL) {
 304                                 Workspace *t_ws = parent->workspace;
 305                                 new->container = t_ws->table[parent->container->col][parent->container->row];
 306                                 new->workspace = t_ws;
 307                                 old_focused = new->container->currently_focused;
 308                                 map_frame = workspace_is_visible(t_ws);
 309                                 new->urgent = true;
 310                                 /* This is a little tricky: we cannot use
 311                                  * workspace_update_urgent_flag() because the
 312                                  * new window was not yet inserted into the
 313                                  * focus stack on t_ws. */
 314                                 t_ws->urgent = true;
 315                         } else {
 316                                 DLOG("parent is not usable\n");
 317                         }
 318                 }
 319
 320                 struct Assignment *assign;
 321                 TAILQ_FOREACH(assign, &assignments, assignments) {
 322                         if (get_matching_client(conn, assign->windowclass_title, new) == NULL)
 323                                 continue;
 324
 325                         if (assign->floating == ASSIGN_FLOATING_ONLY ||
 326                             assign->floating == ASSIGN_FLOATING) {
 327                                 new->floating = FLOATING_AUTO_ON;
 328                                 LOG("Assignment matches, putting client into floating mode\n");
 329                                 if (assign->floating == ASSIGN_FLOATING_ONLY)
 330                                         break;
 331                         }
 332
 333                         LOG("Assignment \"%s\" matches, so putting it on workspace %d\n",
 334                             assign->windowclass_title, assign->workspace);
 335
 336                         if (c_ws->output->current_workspace->num == (assign->workspace-1)) {
 337                                 DLOG("We are already there, no need to do anything\n");
 338                                 break;
 339                         }
 340
 341                         DLOG("Changing container/workspace and unmapping the client\n");
 342                         Workspace *t_ws = workspace_get(assign->workspace-1);
 343                         workspace_initialize(t_ws, c_ws->output, false);
 344
 345                         new->container = t_ws->table[t_ws->current_col][t_ws->current_row];
 346                         new->workspace = t_ws;
 347                         old_focused = new->container->currently_focused;
 348
 349                         map_frame = workspace_is_visible(t_ws);
 350                         break;
 351                 }
 352         }
 353
 354
 355         if (client_is_floating(new)) {
 356                 SLIST_INSERT_HEAD(&(new->workspace->focus_stack), new, focus_clients);
 357
 358                 /* Add the client to the list of floating clients for its workspace */
 359                 TAILQ_INSERT_TAIL(&(new->workspace->floating_clients), new, floating_clients);
 360
 361                 new->container = NULL;
 362
 363                 new->rect.width = new->floating_rect.width + 2 + 2;
 364                 new->rect.height = new->floating_rect.height + (font->height + 2 + 2) + 2;
 365
 366                 /* Some clients (like GIMP’s color picker window) get mapped
 367                  * to (0, 0), so we push them to a reasonable position
 368                  * (centered over their leader) */
 369                 if (new->leader != 0 && x == 0 && y == 0) {
 370                         DLOG("Floating client wants to (0x0), moving it over its leader instead\n");
 371                         Client *leader = table_get(&by_child, new->leader);
 372                         if (leader == NULL) {
 373                                 DLOG("leader is NULL, centering it over current workspace\n");
 374
 375                                 x = c_ws->rect.x + (c_ws->rect.width / 2) - (new->rect.width / 2);
 376                                 y = c_ws->rect.y + (c_ws->rect.height / 2) - (new->rect.height / 2);
 377                         } else {
 378                                 x = leader->rect.x + (leader->rect.width / 2) - (new->rect.width / 2);
 379                                 y = leader->rect.y + (leader->rect.height / 2) - (new->rect.height / 2);
 380                         }
 381                 }
 382                 new->floating_rect.x = new->rect.x = x;
 383                 new->floating_rect.y = new->rect.y = y;
 384                 DLOG("copying floating_rect from tiling (%d, %d) size (%d, %d)\n",
 385                                 new->floating_rect.x, new->floating_rect.y,
 386                                 new->floating_rect.width, new->floating_rect.height);
 387                 DLOG("outer rect (%d, %d) size (%d, %d)\n",
 388                                 new->rect.x, new->rect.y, new->rect.width, new->rect.height);
 389
 390                 /* Make sure it is on top of the other windows */
 391                 xcb_raise_window(conn, new->frame);
 392                 reposition_client(conn, new);
 393                 resize_client(conn, new);
 394                 /* redecorate_window flushes */
 395                 redecorate_window(conn, new);
 396         }
 397
 398         new->initialized = true;
 399
 400
 401         render_layout(conn);
 402
 403 map:
 404         /* Map the window first to avoid flickering */
 405         xcb_map_window(conn, child);
 406         if (map_frame)
 407                 client_map(conn, new);
 408
 409         if ((CUR_CELL->workspace->fullscreen_client == NULL || new->fullscreen) && !new->dock) {
 410                 /* Focus the new window if we’re not in fullscreen mode and if it is not a dock window */
 411                 if ((new->workspace->fullscreen_client == NULL) || new->fullscreen) {
 412                         if (!client_is_floating(new)) {
 413                                 new->container->currently_focused = new;
 414                                 if (map_frame)
 415                                         render_container(conn, new->container);
 416                         }
 417                         if (new->container == CUR_CELL || client_is_floating(new)) {
 418                                 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, new->child, XCB_CURRENT_TIME);
 419                                 ewmh_update_active_window(new->child);
 420                         }
 421                 }
 422         }
 423
 424         xcb_flush(conn);
 425 }
 426 #endif