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00001 /* 00002 * vim:ts=8:expandtab 00003 * 00004 * i3 - an improved dynamic tiling window manager 00005 * 00006 * © 2009-2010 Michael Stapelberg and contributors 00007 * 00008 * See file LICENSE for license information. 00009 * 00010 */ 00011 #include <stdio.h> 00012 #include <assert.h> 00013 #include <string.h> 00014 #include <stdlib.h> 00015 #include <time.h> 00016 00017 #include <xcb/xcb.h> 00018 #include <xcb/xcb_atom.h> 00019 #include <xcb/xcb_icccm.h> 00020 #include <xcb/randr.h> 00021 00022 #include <X11/XKBlib.h> 00023 00024 #include "i3.h" 00025 #include "debug.h" 00026 #include "table.h" 00027 #include "layout.h" 00028 #include "commands.h" 00029 #include "data.h" 00030 #include "xcb.h" 00031 #include "util.h" 00032 #include "randr.h" 00033 #include "config.h" 00034 #include "queue.h" 00035 #include "resize.h" 00036 #include "client.h" 00037 #include "manage.h" 00038 #include "floating.h" 00039 #include "workspace.h" 00040 #include "log.h" 00041 #include "container.h" 00042 #include "ipc.h" 00043 00044 /* After mapping/unmapping windows, a notify event is generated. However, we don’t want it, 00045 since it’d trigger an infinite loop of switching between the different windows when 00046 changing workspaces */ 00047 static SLIST_HEAD(ignore_head, Ignore_Event) ignore_events; 00048 00049 static void add_ignore_event(const int sequence) { 00050 struct Ignore_Event *event = smalloc(sizeof(struct Ignore_Event)); 00051 00052 event->sequence = sequence; 00053 event->added = time(NULL); 00054 00055 SLIST_INSERT_HEAD(&ignore_events, event, ignore_events); 00056 } 00057 00058 /* 00059 * Checks if the given sequence is ignored and returns true if so. 00060 * 00061 */ 00062 static bool event_is_ignored(const int sequence) { 00063 struct Ignore_Event *event; 00064 time_t now = time(NULL); 00065 for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) { 00066 if ((now - event->added) > 5) { 00067 struct Ignore_Event *save = event; 00068 event = SLIST_NEXT(event, ignore_events); 00069 SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events); 00070 free(save); 00071 } else event = SLIST_NEXT(event, ignore_events); 00072 } 00073 00074 SLIST_FOREACH(event, &ignore_events, ignore_events) { 00075 if (event->sequence == sequence) { 00076 SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events); 00077 free(event); 00078 return true; 00079 } 00080 } 00081 00082 return false; 00083 } 00084 00085 /* 00086 * There was a key press. We compare this key code with our bindings table and pass 00087 * the bound action to parse_command(). 00088 * 00089 */ 00090 int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) { 00091 DLOG("Keypress %d, state raw = %d\n", event->detail, event->state); 00092 00093 /* Remove the numlock bit, all other bits are modifiers we can bind to */ 00094 uint16_t state_filtered = event->state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK); 00095 DLOG("(removed numlock, state = %d)\n", state_filtered); 00096 /* Only use the lower 8 bits of the state (modifier masks) so that mouse 00097 * button masks are filtered out */ 00098 state_filtered &= 0xFF; 00099 DLOG("(removed upper 8 bits, state = %d)\n", state_filtered); 00100 00101 if (xkb_current_group == XkbGroup2Index) 00102 state_filtered |= BIND_MODE_SWITCH; 00103 00104 DLOG("(checked mode_switch, state %d)\n", state_filtered); 00105 00106 /* Find the binding */ 00107 Binding *bind = get_binding(state_filtered, event->detail); 00108 00109 /* No match? Then the user has Mode_switch enabled but does not have a 00110 * specific keybinding. Fall back to the default keybindings (without 00111 * Mode_switch). Makes it much more convenient for users of a hybrid 00112 * layout (like us, ru). */ 00113 if (bind == NULL) { 00114 state_filtered &= ~(BIND_MODE_SWITCH); 00115 DLOG("no match, new state_filtered = %d\n", state_filtered); 00116 if ((bind = get_binding(state_filtered, event->detail)) == NULL) { 00117 ELOG("Could not lookup key binding (modifiers %d, keycode %d)\n", 00118 state_filtered, event->detail); 00119 return 1; 00120 } 00121 } 00122 00123 parse_command(conn, bind->command); 00124 return 1; 00125 } 00126 00127 /* 00128 * Called with coordinates of an enter_notify event or motion_notify event 00129 * to check if the user crossed virtual screen boundaries and adjust the 00130 * current workspace, if so. 00131 * 00132 */ 00133 static void check_crossing_screen_boundary(uint32_t x, uint32_t y) { 00134 Output *output; 00135 00136 if ((output = get_output_containing(x, y)) == NULL) { 00137 ELOG("ERROR: No such screen\n"); 00138 return; 00139 } 00140 if (output == c_ws->output) 00141 return; 00142 00143 c_ws->current_row = current_row; 00144 c_ws->current_col = current_col; 00145 c_ws = output->current_workspace; 00146 current_row = c_ws->current_row; 00147 current_col = c_ws->current_col; 00148 DLOG("We're now on output %p\n", output); 00149 00150 /* While usually this function is only called when the user switches 00151 * to a different output using his mouse (and thus the output is 00152 * empty), it may be that the following race condition occurs: 00153 * 1) the user actives a new output (say VGA1). 00154 * 2) the cursor is sent to the first pixel of the new VGA1, thus 00155 * generating an enter_notify for the screen (the enter_notify 00156 * is not yet received by i3). 00157 * 3) i3 requeries screen configuration and maps a workspace onto the 00158 * new output. 00159 * 4) the enter_notify event arrives and c_ws is set to the new 00160 * workspace but the existing windows on the new workspace are not 00161 * focused. 00162 * 00163 * Therefore, we re-set the focus here to be sure it’s correct. */ 00164 Client *first_client = SLIST_FIRST(&(c_ws->focus_stack)); 00165 if (first_client != NULL) 00166 set_focus(global_conn, first_client, true); 00167 } 00168 00169 /* 00170 * When the user moves the mouse pointer onto a window, this callback gets called. 00171 * 00172 */ 00173 int handle_enter_notify(void *ignored, xcb_connection_t *conn, xcb_enter_notify_event_t *event) { 00174 DLOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n", event->event, event->mode, event->detail, event->sequence); 00175 if (event->mode != XCB_NOTIFY_MODE_NORMAL) { 00176 DLOG("This was not a normal notify, ignoring\n"); 00177 return 1; 00178 } 00179 /* Some events are not interesting, because they were not generated actively by the 00180 user, but by reconfiguration of windows */ 00181 if (event_is_ignored(event->sequence)) 00182 return 1; 00183 00184 /* This was either a focus for a client’s parent (= titlebar)… */ 00185 Client *client = table_get(&by_parent, event->event); 00186 /* …or the client itself */ 00187 if (client == NULL) 00188 client = table_get(&by_child, event->event); 00189 00190 /* Check for stack windows */ 00191 if (client == NULL) { 00192 struct Stack_Window *stack_win; 00193 SLIST_FOREACH(stack_win, &stack_wins, stack_windows) 00194 if (stack_win->window == event->event) { 00195 client = stack_win->container->currently_focused; 00196 break; 00197 } 00198 } 00199 00200 00201 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */ 00202 if (client == NULL) { 00203 DLOG("Getting screen at %d x %d\n", event->root_x, event->root_y); 00204 check_crossing_screen_boundary(event->root_x, event->root_y); 00205 return 1; 00206 } 00207 00208 /* Do plausibility checks: This event may be useless for us if it occurs on a window 00209 which is in a stacked container but not the focused one */ 00210 if (client->container != NULL && 00211 client->container->mode == MODE_STACK && 00212 client->container->currently_focused != client) { 00213 DLOG("Plausibility check says: no\n"); 00214 return 1; 00215 } 00216 00217 if (client->workspace != c_ws && client->workspace->output == c_ws->output) { 00218 /* This can happen when a client gets assigned to a different workspace than 00219 * the current one (see src/mainx.c:reparent_window). Shortly after it was created, 00220 * an enter_notify will follow. */ 00221 DLOG("enter_notify for a client on a different workspace but the same screen, ignoring\n"); 00222 return 1; 00223 } 00224 00225 if (!config.disable_focus_follows_mouse) 00226 set_focus(conn, client, false); 00227 00228 return 1; 00229 } 00230 00231 /* 00232 * When the user moves the mouse but does not change the active window 00233 * (e.g. when having no windows opened but moving mouse on the root screen 00234 * and crossing virtual screen boundaries), this callback gets called. 00235 * 00236 */ 00237 int handle_motion_notify(void *ignored, xcb_connection_t *conn, xcb_motion_notify_event_t *event) { 00238 /* Skip events where the pointer was over a child window, we are only 00239 * interested in events on the root window. */ 00240 if (event->child != 0) 00241 return 1; 00242 00243 check_crossing_screen_boundary(event->root_x, event->root_y); 00244 00245 return 1; 00246 } 00247 00248 /* 00249 * Called when the keyboard mapping changes (for example by using Xmodmap), 00250 * we need to update our key bindings then (re-translate symbols). 00251 * 00252 */ 00253 int handle_mapping_notify(void *ignored, xcb_connection_t *conn, xcb_mapping_notify_event_t *event) { 00254 if (event->request != XCB_MAPPING_KEYBOARD && 00255 event->request != XCB_MAPPING_MODIFIER) 00256 return 0; 00257 00258 DLOG("Received mapping_notify for keyboard or modifier mapping, re-grabbing keys\n"); 00259 xcb_refresh_keyboard_mapping(keysyms, event); 00260 00261 xcb_get_numlock_mask(conn); 00262 00263 ungrab_all_keys(conn); 00264 translate_keysyms(); 00265 grab_all_keys(conn, false); 00266 00267 return 0; 00268 } 00269 00270 /* 00271 * A new window appeared on the screen (=was mapped), so let’s manage it. 00272 * 00273 */ 00274 int handle_map_request(void *prophs, xcb_connection_t *conn, xcb_map_request_event_t *event) { 00275 xcb_get_window_attributes_cookie_t cookie; 00276 00277 cookie = xcb_get_window_attributes_unchecked(conn, event->window); 00278 00279 DLOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence); 00280 add_ignore_event(event->sequence); 00281 00282 manage_window(prophs, conn, event->window, cookie, false); 00283 return 1; 00284 } 00285 00286 /* 00287 * Configure requests are received when the application wants to resize windows on their own. 00288 * 00289 * We generate a synthethic configure notify event to signalize the client its "new" position. 00290 * 00291 */ 00292 int handle_configure_request(void *prophs, xcb_connection_t *conn, xcb_configure_request_event_t *event) { 00293 DLOG("window 0x%08x wants to be at %dx%d with %dx%d\n", 00294 event->window, event->x, event->y, event->width, event->height); 00295 00296 Client *client = table_get(&by_child, event->window); 00297 if (client == NULL) { 00298 uint32_t mask = 0; 00299 uint32_t values[7]; 00300 int c = 0; 00301 #define COPY_MASK_MEMBER(mask_member, event_member) do { \ 00302 if (event->value_mask & mask_member) { \ 00303 mask |= mask_member; \ 00304 values[c++] = event->event_member; \ 00305 } \ 00306 } while (0) 00307 00308 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x); 00309 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y); 00310 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width); 00311 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height); 00312 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width); 00313 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling); 00314 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode); 00315 00316 xcb_configure_window(conn, event->window, mask, values); 00317 xcb_flush(conn); 00318 00319 return 1; 00320 } 00321 00322 if (client->fullscreen) { 00323 DLOG("Client is in fullscreen mode\n"); 00324 00325 Rect child_rect = client->workspace->rect; 00326 child_rect.x = child_rect.y = 0; 00327 fake_configure_notify(conn, child_rect, client->child); 00328 00329 return 1; 00330 } 00331 00332 /* Floating clients can be reconfigured */ 00333 if (client_is_floating(client)) { 00334 i3Font *font = load_font(conn, config.font); 00335 int mode = (client->container != NULL ? client->container->mode : MODE_DEFAULT); 00336 /* TODO: refactor this code. we need a function to translate 00337 * coordinates of child_rect/rect. */ 00338 00339 if (event->value_mask & XCB_CONFIG_WINDOW_X) { 00340 if (mode == MODE_STACK || mode == MODE_TABBED) { 00341 client->rect.x = event->x - 2; 00342 } else { 00343 if (client->titlebar_position == TITLEBAR_OFF && client->borderless) 00344 client->rect.x = event->x; 00345 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) 00346 client->rect.x = event->x - 1; 00347 else client->rect.x = event->x - 2; 00348 } 00349 } 00350 if (event->value_mask & XCB_CONFIG_WINDOW_Y) { 00351 if (mode == MODE_STACK || mode == MODE_TABBED) { 00352 client->rect.y = event->y - 2; 00353 } else { 00354 if (client->titlebar_position == TITLEBAR_OFF && client->borderless) 00355 client->rect.y = event->y; 00356 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) 00357 client->rect.y = event->y - 1; 00358 else client->rect.y = event->y - font->height - 2 - 2; 00359 } 00360 } 00361 if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH) { 00362 if (mode == MODE_STACK || mode == MODE_TABBED) { 00363 client->rect.width = event->width + 2 + 2; 00364 } else { 00365 if (client->titlebar_position == TITLEBAR_OFF && client->borderless) 00366 client->rect.width = event->width; 00367 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) 00368 client->rect.width = event->width + (1 + 1); 00369 else client->rect.width = event->width + (2 + 2); 00370 } 00371 } 00372 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) { 00373 if (mode == MODE_STACK || mode == MODE_TABBED) { 00374 client->rect.height = event->height + 2; 00375 } else { 00376 if (client->titlebar_position == TITLEBAR_OFF && client->borderless) 00377 client->rect.height = event->height; 00378 else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) 00379 client->rect.height = event->height + (1 + 1); 00380 else client->rect.height = event->height + (font->height + 2 + 2) + 2; 00381 } 00382 } 00383 00384 DLOG("Accepted new position/size for floating client: (%d, %d) size %d x %d\n", 00385 client->rect.x, client->rect.y, client->rect.width, client->rect.height); 00386 00387 /* Push the new position/size to X11 */ 00388 reposition_client(conn, client); 00389 resize_client(conn, client); 00390 xcb_flush(conn); 00391 00392 return 1; 00393 } 00394 00395 /* Dock clients can be reconfigured in their height */ 00396 if (client->dock) { 00397 DLOG("Reconfiguring height of this dock client\n"); 00398 00399 if (!(event->value_mask & XCB_CONFIG_WINDOW_HEIGHT)) { 00400 DLOG("Ignoring configure request, no height given\n"); 00401 return 1; 00402 } 00403 00404 client->desired_height = event->height; 00405 render_workspace(conn, c_ws->output, c_ws); 00406 xcb_flush(conn); 00407 00408 return 1; 00409 } 00410 00411 if (client->fullscreen) { 00412 DLOG("Client is in fullscreen mode\n"); 00413 00414 Rect child_rect = client->container->workspace->rect; 00415 child_rect.x = child_rect.y = 0; 00416 fake_configure_notify(conn, child_rect, client->child); 00417 00418 return 1; 00419 } 00420 00421 fake_absolute_configure_notify(conn, client); 00422 00423 return 1; 00424 } 00425 00426 /* 00427 * Configuration notifies are only handled because we need to set up ignore for 00428 * the following enter notify events. 00429 * 00430 */ 00431 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) { 00432 /* We ignore this sequence twice because events for child and frame should be ignored */ 00433 add_ignore_event(event->sequence); 00434 add_ignore_event(event->sequence); 00435 00436 return 1; 00437 } 00438 00439 /* 00440 * Gets triggered upon a RandR screen change event, that is when the user 00441 * changes the screen configuration in any way (mode, position, …) 00442 * 00443 */ 00444 int handle_screen_change(void *prophs, xcb_connection_t *conn, 00445 xcb_generic_event_t *e) { 00446 DLOG("RandR screen change\n"); 00447 00448 randr_query_outputs(conn); 00449 00450 ipc_send_event("output", I3_IPC_EVENT_OUTPUT, "{\"change\":\"unspecified\"}"); 00451 00452 return 1; 00453 } 00454 00455 /* 00456 * Our window decorations were unmapped. That means, the window will be killed now, 00457 * so we better clean up before. 00458 * 00459 */ 00460 int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_notify_event_t *event) { 00461 add_ignore_event(event->sequence); 00462 00463 Client *client = table_get(&by_child, event->window); 00464 /* First, we need to check if the client is awaiting an unmap-request which 00465 was generated by us reparenting the window. In that case, we just ignore it. */ 00466 if (client != NULL && client->awaiting_useless_unmap) { 00467 client->awaiting_useless_unmap = false; 00468 return 1; 00469 } 00470 00471 DLOG("event->window = %08x, event->event = %08x\n", event->window, event->event); 00472 DLOG("UnmapNotify for 0x%08x (received from 0x%08x)\n", event->window, event->event); 00473 if (client == NULL) { 00474 DLOG("not a managed window. Ignoring.\n"); 00475 00476 /* This was most likely the destroyed frame of a client which is 00477 * currently being unmapped, so we add this sequence (again!) to 00478 * the ignore list (enter_notify events will get sent for both, 00479 * the child and its frame). */ 00480 add_ignore_event(event->sequence); 00481 00482 return 0; 00483 } 00484 00485 client = table_remove(&by_child, event->window); 00486 00487 /* If this was the fullscreen client, we need to unset it from all 00488 * workspaces it was on (global fullscreen) */ 00489 if (client->fullscreen) { 00490 Workspace *ws; 00491 TAILQ_FOREACH(ws, workspaces, workspaces) 00492 if (ws->fullscreen_client == client) 00493 ws->fullscreen_client = NULL; 00494 } 00495 00496 /* Clients without a container are either floating or dock windows */ 00497 if (client->container != NULL) { 00498 Container *con = client->container; 00499 00500 /* Remove the client from the list of clients */ 00501 client_remove_from_container(conn, client, con, true); 00502 00503 /* Set focus to the last focused client in this container */ 00504 con->currently_focused = get_last_focused_client(conn, con, NULL); 00505 00506 /* Only if this is the active container, we need to really change focus */ 00507 if ((con->currently_focused != NULL) && ((con == CUR_CELL) || client->fullscreen)) 00508 set_focus(conn, con->currently_focused, true); 00509 } else if (client_is_floating(client)) { 00510 DLOG("Removing from floating clients\n"); 00511 TAILQ_REMOVE(&(client->workspace->floating_clients), client, floating_clients); 00512 SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients); 00513 } 00514 00515 if (client->dock) { 00516 DLOG("Removing from dock clients\n"); 00517 SLIST_REMOVE(&(client->workspace->output->dock_clients), client, Client, dock_clients); 00518 } 00519 00520 DLOG("child of 0x%08x.\n", client->frame); 00521 xcb_reparent_window(conn, client->child, root, 0, 0); 00522 00523 client_unmap(conn, client); 00524 00525 xcb_destroy_window(conn, client->frame); 00526 xcb_flush(conn); 00527 table_remove(&by_parent, client->frame); 00528 00529 if (client->container != NULL) { 00530 Workspace *workspace = client->container->workspace; 00531 cleanup_table(conn, workspace); 00532 fix_colrowspan(conn, workspace); 00533 } 00534 00535 /* Let’s see how many clients there are left on the workspace to delete it if it’s empty */ 00536 bool workspace_empty = SLIST_EMPTY(&(client->workspace->focus_stack)); 00537 bool workspace_focused = (c_ws == client->workspace); 00538 Client *to_focus = (!workspace_empty ? SLIST_FIRST(&(client->workspace->focus_stack)) : NULL); 00539 00540 /* If this workspace is currently visible, we don’t delete it */ 00541 if (workspace_is_visible(client->workspace)) 00542 workspace_empty = false; 00543 00544 if (workspace_empty) { 00545 client->workspace->output = NULL; 00546 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"empty\"}"); 00547 } 00548 00549 /* Remove the urgency flag if set */ 00550 client->urgent = false; 00551 workspace_update_urgent_flag(client->workspace); 00552 00553 FREE(client->window_class_instance); 00554 FREE(client->window_class_class); 00555 FREE(client->name); 00556 free(client); 00557 00558 render_layout(conn); 00559 00560 /* Ensure the focus is set to the next client in the focus stack or to 00561 * the screen itself (if we do not focus the screen, it can happen that 00562 * the focus is "nowhere" and thus keypress events will not be received 00563 * by i3, thus the user cannot use any hotkeys). */ 00564 if (workspace_focused) { 00565 if (to_focus != NULL) 00566 set_focus(conn, to_focus, true); 00567 else { 00568 DLOG("Restoring focus to root screen\n"); 00569 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME); 00570 xcb_flush(conn); 00571 } 00572 } 00573 00574 return 1; 00575 } 00576 00577 /* 00578 * A destroy notify event is sent when the window is not unmapped, but 00579 * immediately destroyed (for example when starting a window and immediately 00580 * killing the program which started it). 00581 * 00582 * We just pass on the event to the unmap notify handler (by copying the 00583 * important fields in the event data structure). 00584 * 00585 */ 00586 int handle_destroy_notify_event(void *data, xcb_connection_t *conn, xcb_destroy_notify_event_t *event) { 00587 DLOG("destroy notify for 0x%08x, 0x%08x\n", event->event, event->window); 00588 00589 xcb_unmap_notify_event_t unmap; 00590 unmap.sequence = event->sequence; 00591 unmap.event = event->event; 00592 unmap.window = event->window; 00593 00594 return handle_unmap_notify_event(NULL, conn, &unmap); 00595 } 00596 00597 /* 00598 * Called when a window changes its title 00599 * 00600 */ 00601 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state, 00602 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) { 00603 if (prop == NULL || xcb_get_property_value_length(prop) == 0) { 00604 DLOG("_NET_WM_NAME not specified, not changing\n"); 00605 return 1; 00606 } 00607 Client *client = table_get(&by_child, window); 00608 if (client == NULL) 00609 return 1; 00610 00611 /* Save the old pointer to make the update atomic */ 00612 char *new_name; 00613 int new_len; 00614 if (asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) { 00615 perror("asprintf"); 00616 LOG("Could not format _NET_WM_NAME, ignoring new hint\n"); 00617 return 1; 00618 } 00619 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */ 00620 char *ucs2_name = convert_utf8_to_ucs2(new_name, &new_len); 00621 LOG("_NET_WM_NAME changed to \"%s\"\n", new_name); 00622 free(new_name); 00623 if (ucs2_name == NULL) { 00624 LOG("Could not convert _NET_WM_NAME to UCS-2, ignoring new hint\n"); 00625 return 1; 00626 } 00627 00628 /* Check if they are the same and don’t update if so. 00629 Note the use of new_len * 2 to check all bytes as each glyph takes 2 bytes. 00630 Also note the use of memcmp() instead of strncmp() because the latter stops on nullbytes, 00631 but UCS-2 uses nullbytes to fill up glyphs which only use one byte. */ 00632 if ((new_len == client->name_len) && 00633 (client->name != NULL) && 00634 (memcmp(client->name, ucs2_name, new_len * 2) == 0)) { 00635 free(ucs2_name); 00636 return 1; 00637 } 00638 00639 char *old_name = client->name; 00640 client->name = ucs2_name; 00641 client->name_len = new_len; 00642 client->uses_net_wm_name = true; 00643 00644 FREE(old_name); 00645 00646 /* If the client is a dock window, we don’t need to render anything */ 00647 if (client->dock) 00648 return 1; 00649 00650 if (!workspace_is_visible(client->workspace)) 00651 return 1; 00652 00653 int mode = container_mode(client->container, true); 00654 if (mode == MODE_STACK || mode == MODE_TABBED) 00655 render_container(conn, client->container); 00656 else decorate_window(conn, client, client->frame, client->titlegc, 0, 0); 00657 xcb_flush(conn); 00658 00659 return 1; 00660 } 00661 00662 /* 00663 * We handle legacy window names (titles) which are in COMPOUND_TEXT encoding. However, we 00664 * just pass them along, so when containing non-ASCII characters, those will be rendering 00665 * incorrectly. In order to correctly render unicode window titles in i3, an application 00666 * has to set _NET_WM_NAME, which is in UTF-8 encoding. 00667 * 00668 * On every update, a message is put out to the user, so he may improve the situation and 00669 * update applications which display filenames in their title to correctly use 00670 * _NET_WM_NAME and therefore support unicode. 00671 * 00672 */ 00673 int handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state, 00674 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) { 00675 if (prop == NULL || xcb_get_property_value_length(prop) == 0) { 00676 DLOG("prop == NULL\n"); 00677 return 1; 00678 } 00679 Client *client = table_get(&by_child, window); 00680 if (client == NULL) 00681 return 1; 00682 00683 /* Client capable of _NET_WM_NAME, ignore legacy name changes */ 00684 if (client->uses_net_wm_name) 00685 return 1; 00686 00687 /* Save the old pointer to make the update atomic */ 00688 char *new_name; 00689 if (asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) { 00690 perror("Could not get old name"); 00691 DLOG("Could not get old name\n"); 00692 return 1; 00693 } 00694 /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */ 00695 LOG("WM_NAME changed to \"%s\"\n", new_name); 00696 00697 /* Check if they are the same and don’t update if so. */ 00698 if (client->name != NULL && 00699 strlen(new_name) == strlen(client->name) && 00700 strcmp(client->name, new_name) == 0) { 00701 free(new_name); 00702 return 1; 00703 } 00704 00705 LOG("Using legacy window title. Note that in order to get Unicode window titles in i3, " 00706 "the application has to set _NET_WM_NAME which is in UTF-8 encoding.\n"); 00707 00708 char *old_name = client->name; 00709 client->name = new_name; 00710 client->name_len = -1; 00711 00712 if (old_name != NULL) 00713 free(old_name); 00714 00715 /* If the client is a dock window, we don’t need to render anything */ 00716 if (client->dock) 00717 return 1; 00718 00719 if (!workspace_is_visible(client->workspace)) 00720 return 1; 00721 00722 if (client->container != NULL && 00723 (client->container->mode == MODE_STACK || 00724 client->container->mode == MODE_TABBED)) 00725 render_container(conn, client->container); 00726 else decorate_window(conn, client, client->frame, client->titlegc, 0, 0); 00727 xcb_flush(conn); 00728 00729 return 1; 00730 } 00731 00732 /* 00733 * Updates the client’s WM_CLASS property 00734 * 00735 */ 00736 int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state, 00737 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) { 00738 if (prop == NULL || xcb_get_property_value_length(prop) == 0) { 00739 DLOG("prop == NULL\n"); 00740 return 1; 00741 } 00742 Client *client = table_get(&by_child, window); 00743 if (client == NULL) 00744 return 1; 00745 00746 /* We cannot use asprintf here since this property contains two 00747 * null-terminated strings (for compatibility reasons). Instead, we 00748 * use strdup() on both strings */ 00749 char *new_class = xcb_get_property_value(prop); 00750 00751 FREE(client->window_class_instance); 00752 FREE(client->window_class_class); 00753 00754 client->window_class_instance = strdup(new_class); 00755 if ((strlen(new_class) + 1) < xcb_get_property_value_length(prop)) 00756 client->window_class_class = strdup(new_class + strlen(new_class) + 1); 00757 else client->window_class_class = NULL; 00758 LOG("WM_CLASS changed to %s (instance), %s (class)\n", 00759 client->window_class_instance, client->window_class_class); 00760 00761 return 0; 00762 } 00763 00764 /* 00765 * Expose event means we should redraw our windows (= title bar) 00766 * 00767 */ 00768 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) { 00769 /* event->count is the number of minimum remaining expose events for this window, so we 00770 skip all events but the last one */ 00771 if (event->count != 0) 00772 return 1; 00773 DLOG("window = %08x\n", event->window); 00774 00775 Client *client = table_get(&by_parent, event->window); 00776 if (client == NULL) { 00777 /* There was no client in the table, so this is probably an expose event for 00778 one of our stack_windows. */ 00779 struct Stack_Window *stack_win; 00780 SLIST_FOREACH(stack_win, &stack_wins, stack_windows) 00781 if (stack_win->window == event->window) { 00782 render_container(conn, stack_win->container); 00783 return 1; 00784 } 00785 00786 /* …or one of the bars? */ 00787 Output *output; 00788 TAILQ_FOREACH(output, &outputs, outputs) 00789 if (output->bar == event->window) 00790 render_layout(conn); 00791 return 1; 00792 } 00793 00794 if (client->dock) 00795 return 1; 00796 00797 if (container_mode(client->container, true) == MODE_DEFAULT) 00798 decorate_window(conn, client, client->frame, client->titlegc, 0, 0); 00799 else { 00800 uint32_t background_color; 00801 if (client->urgent) 00802 background_color = config.client.urgent.background; 00803 /* Distinguish if the window is currently focused… */ 00804 else if (CUR_CELL != NULL && CUR_CELL->currently_focused == client) 00805 background_color = config.client.focused.background; 00806 /* …or if it is the focused window in a not focused container */ 00807 else background_color = config.client.focused_inactive.background; 00808 00809 /* Set foreground color to current focused color, line width to 2 */ 00810 uint32_t values[] = {background_color, 2}; 00811 xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values); 00812 00813 /* Draw the border, the ±1 is for line width = 2 */ 00814 xcb_point_t points[] = {{1, 0}, /* left upper edge */ 00815 {1, client->rect.height-1}, /* left bottom edge */ 00816 {client->rect.width-1, client->rect.height-1}, /* right bottom edge */ 00817 {client->rect.width-1, 0}}; /* right upper edge */ 00818 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 4, points); 00819 00820 /* Draw the background */ 00821 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, config.client.background); 00822 if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) { 00823 xcb_rectangle_t crect = {1, 0, client->rect.width - (1 + 1), client->rect.height - 1}; 00824 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect); 00825 } else { 00826 xcb_rectangle_t crect = {2, 0, client->rect.width - (2 + 2), client->rect.height - 2}; 00827 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect); 00828 } 00829 } 00830 xcb_flush(conn); 00831 return 1; 00832 } 00833 00834 /* 00835 * Handle client messages (EWMH) 00836 * 00837 */ 00838 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) { 00839 if (event->type == atoms[_NET_WM_STATE]) { 00840 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN]) 00841 return 0; 00842 00843 Client *client = table_get(&by_child, event->window); 00844 if (client == NULL) 00845 return 0; 00846 00847 /* Check if the fullscreen state should be toggled */ 00848 if ((client->fullscreen && 00849 (event->data.data32[0] == _NET_WM_STATE_REMOVE || 00850 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) || 00851 (!client->fullscreen && 00852 (event->data.data32[0] == _NET_WM_STATE_ADD || 00853 event->data.data32[0] == _NET_WM_STATE_TOGGLE))) 00854 client_toggle_fullscreen(conn, client); 00855 } else { 00856 ELOG("unhandled clientmessage\n"); 00857 return 0; 00858 } 00859 00860 return 1; 00861 } 00862 00863 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, 00864 xcb_atom_t atom, xcb_get_property_reply_t *property) { 00865 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s 00866 before changing this property. */ 00867 ELOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n"); 00868 return 0; 00869 } 00870 00871 /* 00872 * Handles the size hints set by a window, but currently only the part necessary for displaying 00873 * clients proportionally inside their frames (mplayer for example) 00874 * 00875 * See ICCCM 4.1.2.3 for more details 00876 * 00877 */ 00878 int handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, 00879 xcb_atom_t name, xcb_get_property_reply_t *reply) { 00880 Client *client = table_get(&by_child, window); 00881 if (client == NULL) { 00882 DLOG("Received WM_SIZE_HINTS for unknown client\n"); 00883 return 1; 00884 } 00885 xcb_size_hints_t size_hints; 00886 00887 CLIENT_LOG(client); 00888 00889 /* If the hints were already in this event, use them, if not, request them */ 00890 if (reply != NULL) 00891 xcb_get_wm_size_hints_from_reply(&size_hints, reply); 00892 else 00893 xcb_get_wm_normal_hints_reply(conn, xcb_get_wm_normal_hints_unchecked(conn, client->child), &size_hints, NULL); 00894 00895 if ((size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE)) { 00896 // TODO: Minimum size is not yet implemented 00897 DLOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height); 00898 } 00899 00900 bool changed = false; 00901 if ((size_hints.flags & XCB_SIZE_HINT_P_RESIZE_INC)) { 00902 if (size_hints.width_inc > 0 && size_hints.width_inc < 0xFFFF) 00903 if (client->width_increment != size_hints.width_inc) { 00904 client->width_increment = size_hints.width_inc; 00905 changed = true; 00906 } 00907 if (size_hints.height_inc > 0 && size_hints.height_inc < 0xFFFF) 00908 if (client->height_increment != size_hints.height_inc) { 00909 client->height_increment = size_hints.height_inc; 00910 changed = true; 00911 } 00912 00913 if (changed) 00914 DLOG("resize increments changed\n"); 00915 } 00916 00917 int base_width = 0, base_height = 0; 00918 00919 /* base_width/height are the desired size of the window. 00920 We check if either the program-specified size or the program-specified 00921 min-size is available */ 00922 if (size_hints.flags & XCB_SIZE_HINT_BASE_SIZE) { 00923 base_width = size_hints.base_width; 00924 base_height = size_hints.base_height; 00925 } else if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) { 00926 /* TODO: is this right? icccm says not */ 00927 base_width = size_hints.min_width; 00928 base_height = size_hints.min_height; 00929 } 00930 00931 if (base_width != client->base_width || 00932 base_height != client->base_height) { 00933 client->base_width = base_width; 00934 client->base_height = base_height; 00935 DLOG("client's base_height changed to %d\n", base_height); 00936 DLOG("client's base_width changed to %d\n", base_width); 00937 changed = true; 00938 } 00939 00940 if (changed) { 00941 if (client->fullscreen) 00942 DLOG("Not resizing client, it is in fullscreen mode\n"); 00943 else { 00944 resize_client(conn, client); 00945 xcb_flush(conn); 00946 } 00947 } 00948 00949 /* If no aspect ratio was set or if it was invalid, we ignore the hints */ 00950 if (!(size_hints.flags & XCB_SIZE_HINT_P_ASPECT) || 00951 (size_hints.min_aspect_num <= 0) || 00952 (size_hints.min_aspect_den <= 0)) { 00953 return 1; 00954 } 00955 00956 double width = client->rect.width - base_width; 00957 double height = client->rect.height - base_height; 00958 /* Convert numerator/denominator to a double */ 00959 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den; 00960 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den; 00961 00962 DLOG("Aspect ratio set: minimum %f, maximum %f\n", min_aspect, max_aspect); 00963 DLOG("width = %f, height = %f\n", width, height); 00964 00965 /* Sanity checks, this is user-input, in a way */ 00966 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0) 00967 return 1; 00968 00969 /* Check if we need to set proportional_* variables using the correct ratio */ 00970 if ((width / height) < min_aspect) { 00971 client->proportional_width = width; 00972 client->proportional_height = width / min_aspect; 00973 } else if ((width / height) > max_aspect) { 00974 client->proportional_width = width; 00975 client->proportional_height = width / max_aspect; 00976 } else return 1; 00977 00978 client->force_reconfigure = true; 00979 00980 if (client->container != NULL && workspace_is_visible(client->workspace)) { 00981 render_container(conn, client->container); 00982 xcb_flush(conn); 00983 } 00984 00985 return 1; 00986 } 00987 00988 /* 00989 * Handles the WM_HINTS property for extracting the urgency state of the window. 00990 * 00991 */ 00992 int handle_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, 00993 xcb_atom_t name, xcb_get_property_reply_t *reply) { 00994 Client *client = table_get(&by_child, window); 00995 if (client == NULL) { 00996 DLOG("Received WM_HINTS for unknown client\n"); 00997 return 1; 00998 } 00999 xcb_wm_hints_t hints; 01000 01001 if (reply != NULL) { 01002 if (!xcb_get_wm_hints_from_reply(&hints, reply)) 01003 return 1; 01004 } else { 01005 if (!xcb_get_wm_hints_reply(conn, xcb_get_wm_hints_unchecked(conn, client->child), &hints, NULL)) 01006 return 1; 01007 } 01008 01009 Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack)); 01010 if (!client->urgent && client == last_focused) { 01011 DLOG("Ignoring urgency flag for current client\n"); 01012 return 1; 01013 } 01014 01015 /* Update the flag on the client directly */ 01016 client->urgent = (xcb_wm_hints_get_urgency(&hints) != 0); 01017 CLIENT_LOG(client); 01018 LOG("Urgency flag changed to %d\n", client->urgent); 01019 01020 workspace_update_urgent_flag(client->workspace); 01021 01022 /* If the workspace this client is on is not visible, we need to redraw 01023 * the workspace bar */ 01024 if (!workspace_is_visible(client->workspace)) { 01025 Output *output = client->workspace->output; 01026 render_workspace(conn, output, output->current_workspace); 01027 xcb_flush(conn); 01028 } else { 01029 redecorate_window(conn, client); 01030 } 01031 01032 return 1; 01033 } 01034 01035 /* 01036 * Handles the transient for hints set by a window, signalizing that this window is a popup window 01037 * for some other window. 01038 * 01039 * See ICCCM 4.1.2.6 for more details 01040 * 01041 */ 01042 int handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, 01043 xcb_atom_t name, xcb_get_property_reply_t *reply) { 01044 Client *client = table_get(&by_child, window); 01045 if (client == NULL) { 01046 DLOG("No such client\n"); 01047 return 1; 01048 } 01049 01050 xcb_window_t transient_for; 01051 01052 if (reply != NULL) { 01053 if (!xcb_get_wm_transient_for_from_reply(&transient_for, reply)) 01054 return 1; 01055 } else { 01056 if (!xcb_get_wm_transient_for_reply(conn, xcb_get_wm_transient_for_unchecked(conn, window), 01057 &transient_for, NULL)) 01058 return 1; 01059 } 01060 01061 if (client->floating == FLOATING_AUTO_OFF) { 01062 DLOG("This is a popup window, putting into floating\n"); 01063 toggle_floating_mode(conn, client, true); 01064 } 01065 01066 return 1; 01067 } 01068 01069 /* 01070 * Handles changes of the WM_CLIENT_LEADER atom which specifies if this is a 01071 * toolwindow (or similar) and to which window it belongs (logical parent). 01072 * 01073 */ 01074 int handle_clientleader_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, 01075 xcb_atom_t name, xcb_get_property_reply_t *prop) { 01076 if (prop == NULL) { 01077 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn, 01078 false, window, WM_CLIENT_LEADER, WINDOW, 0, 32), NULL); 01079 if (prop == NULL) 01080 return 1; 01081 } 01082 01083 Client *client = table_get(&by_child, window); 01084 if (client == NULL) 01085 return 1; 01086 01087 xcb_window_t *leader = xcb_get_property_value(prop); 01088 if (leader == NULL) 01089 return 1; 01090 01091 DLOG("Client leader changed to %08x\n", *leader); 01092 01093 client->leader = *leader; 01094 01095 return 1; 01096 }