i3
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00001 /* 00002 * vim:ts=4:sw=4:expandtab 00003 * 00004 * i3 - an improved dynamic tiling window manager 00005 * © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE) 00006 * 00007 * handlers.c: Small handlers for various events (keypresses, focus changes, 00008 * …). 00009 * 00010 */ 00011 #include "all.h" 00012 00013 #include <time.h> 00014 #include <sys/time.h> 00015 #include <xcb/randr.h> 00016 #include <X11/XKBlib.h> 00017 #define SN_API_NOT_YET_FROZEN 1 00018 #include <libsn/sn-monitor.h> 00019 00020 int randr_base = -1; 00021 00022 /* After mapping/unmapping windows, a notify event is generated. However, we don’t want it, 00023 since it’d trigger an infinite loop of switching between the different windows when 00024 changing workspaces */ 00025 static SLIST_HEAD(ignore_head, Ignore_Event) ignore_events; 00026 00027 /* 00028 * Adds the given sequence to the list of events which are ignored. 00029 * If this ignore should only affect a specific response_type, pass 00030 * response_type, otherwise, pass -1. 00031 * 00032 * Every ignored sequence number gets garbage collected after 5 seconds. 00033 * 00034 */ 00035 void add_ignore_event(const int sequence, const int response_type) { 00036 struct Ignore_Event *event = smalloc(sizeof(struct Ignore_Event)); 00037 00038 event->sequence = sequence; 00039 event->response_type = response_type; 00040 event->added = time(NULL); 00041 00042 SLIST_INSERT_HEAD(&ignore_events, event, ignore_events); 00043 } 00044 00045 /* 00046 * Checks if the given sequence is ignored and returns true if so. 00047 * 00048 */ 00049 bool event_is_ignored(const int sequence, const int response_type) { 00050 struct Ignore_Event *event; 00051 time_t now = time(NULL); 00052 for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) { 00053 if ((now - event->added) > 5) { 00054 struct Ignore_Event *save = event; 00055 event = SLIST_NEXT(event, ignore_events); 00056 SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events); 00057 free(save); 00058 } else event = SLIST_NEXT(event, ignore_events); 00059 } 00060 00061 SLIST_FOREACH(event, &ignore_events, ignore_events) { 00062 if (event->sequence != sequence) 00063 continue; 00064 00065 if (event->response_type != -1 && 00066 event->response_type != response_type) 00067 continue; 00068 00069 /* instead of removing a sequence number we better wait until it gets 00070 * garbage collected. it may generate multiple events (there are multiple 00071 * enter_notifies for one configure_request, for example). */ 00072 //SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events); 00073 //free(event); 00074 return true; 00075 } 00076 00077 return false; 00078 } 00079 00080 00081 /* 00082 * There was a key press. We compare this key code with our bindings table and pass 00083 * the bound action to parse_command(). 00084 * 00085 */ 00086 static void handle_key_press(xcb_key_press_event_t *event) { 00087 00088 last_timestamp = event->time; 00089 00090 DLOG("Keypress %d, state raw = %d\n", event->detail, event->state); 00091 00092 /* Remove the numlock bit, all other bits are modifiers we can bind to */ 00093 uint16_t state_filtered = event->state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK); 00094 DLOG("(removed numlock, state = %d)\n", state_filtered); 00095 /* Only use the lower 8 bits of the state (modifier masks) so that mouse 00096 * button masks are filtered out */ 00097 state_filtered &= 0xFF; 00098 DLOG("(removed upper 8 bits, state = %d)\n", state_filtered); 00099 00100 if (xkb_current_group == XkbGroup2Index) 00101 state_filtered |= BIND_MODE_SWITCH; 00102 00103 DLOG("(checked mode_switch, state %d)\n", state_filtered); 00104 00105 /* Find the binding */ 00106 Binding *bind = get_binding(state_filtered, event->detail); 00107 00108 /* No match? Then the user has Mode_switch enabled but does not have a 00109 * specific keybinding. Fall back to the default keybindings (without 00110 * Mode_switch). Makes it much more convenient for users of a hybrid 00111 * layout (like us, ru). */ 00112 if (bind == NULL) { 00113 state_filtered &= ~(BIND_MODE_SWITCH); 00114 DLOG("no match, new state_filtered = %d\n", state_filtered); 00115 if ((bind = get_binding(state_filtered, event->detail)) == NULL) { 00116 ELOG("Could not lookup key binding (modifiers %d, keycode %d)\n", 00117 state_filtered, event->detail); 00118 return; 00119 } 00120 } 00121 00122 struct CommandResult *command_output = parse_command(bind->command); 00123 00124 if (command_output->needs_tree_render) 00125 tree_render(); 00126 00127 free(command_output->json_output); 00128 } 00129 00130 /* 00131 * Called with coordinates of an enter_notify event or motion_notify event 00132 * to check if the user crossed virtual screen boundaries and adjust the 00133 * current workspace, if so. 00134 * 00135 */ 00136 static void check_crossing_screen_boundary(uint32_t x, uint32_t y) { 00137 Output *output; 00138 00139 /* If the user disable focus follows mouse, we have nothing to do here */ 00140 if (config.disable_focus_follows_mouse) 00141 return; 00142 00143 if ((output = get_output_containing(x, y)) == NULL) { 00144 ELOG("ERROR: No such screen\n"); 00145 return; 00146 } 00147 00148 if (output->con == NULL) { 00149 ELOG("ERROR: The screen is not recognized by i3 (no container associated)\n"); 00150 return; 00151 } 00152 00153 /* Focus the output on which the user moved his cursor */ 00154 Con *old_focused = focused; 00155 Con *next = con_descend_focused(output_get_content(output->con)); 00156 /* Since we are switching outputs, this *must* be a different workspace, so 00157 * call workspace_show() */ 00158 workspace_show(con_get_workspace(next)); 00159 con_focus(next); 00160 00161 /* If the focus changed, we re-render to get updated decorations */ 00162 if (old_focused != focused) 00163 tree_render(); 00164 } 00165 00166 /* 00167 * When the user moves the mouse pointer onto a window, this callback gets called. 00168 * 00169 */ 00170 static void handle_enter_notify(xcb_enter_notify_event_t *event) { 00171 Con *con; 00172 00173 last_timestamp = event->time; 00174 00175 DLOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n", 00176 event->event, event->mode, event->detail, event->sequence); 00177 DLOG("coordinates %d, %d\n", event->event_x, event->event_y); 00178 if (event->mode != XCB_NOTIFY_MODE_NORMAL) { 00179 DLOG("This was not a normal notify, ignoring\n"); 00180 return; 00181 } 00182 /* Some events are not interesting, because they were not generated 00183 * actively by the user, but by reconfiguration of windows */ 00184 if (event_is_ignored(event->sequence, XCB_ENTER_NOTIFY)) { 00185 DLOG("Event ignored\n"); 00186 return; 00187 } 00188 00189 bool enter_child = false; 00190 /* Get container by frame or by child window */ 00191 if ((con = con_by_frame_id(event->event)) == NULL) { 00192 con = con_by_window_id(event->event); 00193 enter_child = true; 00194 } 00195 00196 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */ 00197 if (con == NULL) { 00198 DLOG("Getting screen at %d x %d\n", event->root_x, event->root_y); 00199 check_crossing_screen_boundary(event->root_x, event->root_y); 00200 return; 00201 } 00202 00203 if (con->parent->type == CT_DOCKAREA) { 00204 DLOG("Ignoring, this is a dock client\n"); 00205 return; 00206 } 00207 00208 /* see if the user entered the window on a certain window decoration */ 00209 int layout = (enter_child ? con->parent->layout : con->layout); 00210 if (layout == L_DEFAULT) { 00211 Con *child; 00212 TAILQ_FOREACH(child, &(con->nodes_head), nodes) 00213 if (rect_contains(child->deco_rect, event->event_x, event->event_y)) { 00214 LOG("using child %p / %s instead!\n", child, child->name); 00215 con = child; 00216 break; 00217 } 00218 } 00219 00220 #if 0 00221 if (client->workspace != c_ws && client->workspace->output == c_ws->output) { 00222 /* This can happen when a client gets assigned to a different workspace than 00223 * the current one (see src/mainx.c:reparent_window). Shortly after it was created, 00224 * an enter_notify will follow. */ 00225 DLOG("enter_notify for a client on a different workspace but the same screen, ignoring\n"); 00226 return 1; 00227 } 00228 #endif 00229 00230 if (config.disable_focus_follows_mouse) 00231 return; 00232 00233 /* Get the currently focused workspace to check if the focus change also 00234 * involves changing workspaces. If so, we need to call workspace_show() to 00235 * correctly update state and send the IPC event. */ 00236 Con *ws = con_get_workspace(con); 00237 if (ws != con_get_workspace(focused)) 00238 workspace_show(ws); 00239 00240 focused_id = XCB_NONE; 00241 con_focus(con_descend_focused(con)); 00242 tree_render(); 00243 00244 return; 00245 } 00246 00247 /* 00248 * When the user moves the mouse but does not change the active window 00249 * (e.g. when having no windows opened but moving mouse on the root screen 00250 * and crossing virtual screen boundaries), this callback gets called. 00251 * 00252 */ 00253 static void handle_motion_notify(xcb_motion_notify_event_t *event) { 00254 00255 last_timestamp = event->time; 00256 00257 /* Skip events where the pointer was over a child window, we are only 00258 * interested in events on the root window. */ 00259 if (event->child != 0) 00260 return; 00261 00262 Con *con; 00263 if ((con = con_by_frame_id(event->event)) == NULL) { 00264 check_crossing_screen_boundary(event->root_x, event->root_y); 00265 return; 00266 } 00267 00268 if (config.disable_focus_follows_mouse) 00269 return; 00270 00271 if (con->layout != L_DEFAULT) 00272 return; 00273 00274 /* see over which rect the user is */ 00275 Con *current; 00276 TAILQ_FOREACH(current, &(con->nodes_head), nodes) { 00277 if (!rect_contains(current->deco_rect, event->event_x, event->event_y)) 00278 continue; 00279 00280 /* We found the rect, let’s see if this window is focused */ 00281 if (TAILQ_FIRST(&(con->focus_head)) == current) 00282 return; 00283 00284 con_focus(current); 00285 x_push_changes(croot); 00286 return; 00287 } 00288 00289 return; 00290 } 00291 00292 /* 00293 * Called when the keyboard mapping changes (for example by using Xmodmap), 00294 * we need to update our key bindings then (re-translate symbols). 00295 * 00296 */ 00297 static void handle_mapping_notify(xcb_mapping_notify_event_t *event) { 00298 if (event->request != XCB_MAPPING_KEYBOARD && 00299 event->request != XCB_MAPPING_MODIFIER) 00300 return; 00301 00302 DLOG("Received mapping_notify for keyboard or modifier mapping, re-grabbing keys\n"); 00303 xcb_refresh_keyboard_mapping(keysyms, event); 00304 00305 xcb_numlock_mask = aio_get_mod_mask_for(XCB_NUM_LOCK, keysyms); 00306 00307 ungrab_all_keys(conn); 00308 translate_keysyms(); 00309 grab_all_keys(conn, false); 00310 00311 return; 00312 } 00313 00314 /* 00315 * A new window appeared on the screen (=was mapped), so let’s manage it. 00316 * 00317 */ 00318 static void handle_map_request(xcb_map_request_event_t *event) { 00319 xcb_get_window_attributes_cookie_t cookie; 00320 00321 cookie = xcb_get_window_attributes_unchecked(conn, event->window); 00322 00323 DLOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence); 00324 add_ignore_event(event->sequence, -1); 00325 00326 manage_window(event->window, cookie, false); 00327 x_push_changes(croot); 00328 return; 00329 } 00330 00331 /* 00332 * Configure requests are received when the application wants to resize windows 00333 * on their own. 00334 * 00335 * We generate a synthethic configure notify event to signalize the client its 00336 * "new" position. 00337 * 00338 */ 00339 static void handle_configure_request(xcb_configure_request_event_t *event) { 00340 Con *con; 00341 00342 DLOG("window 0x%08x wants to be at %dx%d with %dx%d\n", 00343 event->window, event->x, event->y, event->width, event->height); 00344 00345 /* For unmanaged windows, we just execute the configure request. As soon as 00346 * it gets mapped, we will take over anyways. */ 00347 if ((con = con_by_window_id(event->window)) == NULL) { 00348 DLOG("Configure request for unmanaged window, can do that.\n"); 00349 00350 uint32_t mask = 0; 00351 uint32_t values[7]; 00352 int c = 0; 00353 #define COPY_MASK_MEMBER(mask_member, event_member) do { \ 00354 if (event->value_mask & mask_member) { \ 00355 mask |= mask_member; \ 00356 values[c++] = event->event_member; \ 00357 } \ 00358 } while (0) 00359 00360 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x); 00361 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y); 00362 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width); 00363 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height); 00364 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width); 00365 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling); 00366 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode); 00367 00368 xcb_configure_window(conn, event->window, mask, values); 00369 xcb_flush(conn); 00370 00371 return; 00372 } 00373 00374 DLOG("Configure request!\n"); 00375 if (con_is_floating(con) && con_is_leaf(con)) { 00376 /* find the height for the decorations */ 00377 int deco_height = config.font.height + 5; 00378 /* we actually need to apply the size/position changes to the *parent* 00379 * container */ 00380 Rect bsr = con_border_style_rect(con); 00381 if (con->border_style == BS_NORMAL) { 00382 bsr.y += deco_height; 00383 bsr.height -= deco_height; 00384 } 00385 Con *floatingcon = con->parent; 00386 00387 Rect newrect = floatingcon->rect; 00388 00389 if (event->value_mask & XCB_CONFIG_WINDOW_X) { 00390 newrect.x = event->x + (-1) * bsr.x; 00391 DLOG("proposed x = %d, new x is %d\n", event->x, newrect.x); 00392 } 00393 if (event->value_mask & XCB_CONFIG_WINDOW_Y) { 00394 newrect.y = event->y + (-1) * bsr.y; 00395 DLOG("proposed y = %d, new y is %d\n", event->y, newrect.y); 00396 } 00397 if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH) { 00398 newrect.width = event->width + (-1) * bsr.width; 00399 newrect.width += con->border_width * 2; 00400 DLOG("proposed width = %d, new width is %d (x11 border %d)\n", 00401 event->width, newrect.width, con->border_width); 00402 } 00403 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) { 00404 newrect.height = event->height + (-1) * bsr.height; 00405 newrect.height += con->border_width * 2; 00406 DLOG("proposed height = %d, new height is %d (x11 border %d)\n", 00407 event->height, newrect.height, con->border_width); 00408 } 00409 00410 DLOG("Container is a floating leaf node, will do that.\n"); 00411 floating_reposition(floatingcon, newrect); 00412 return; 00413 } 00414 00415 /* Dock windows can be reconfigured in their height */ 00416 if (con->parent && con->parent->type == CT_DOCKAREA) { 00417 DLOG("Dock window, only height reconfiguration allowed\n"); 00418 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) { 00419 DLOG("Height given, changing\n"); 00420 00421 con->geometry.height = event->height; 00422 tree_render(); 00423 } 00424 } 00425 00426 fake_absolute_configure_notify(con); 00427 00428 return; 00429 } 00430 #if 0 00431 00432 /* 00433 * Configuration notifies are only handled because we need to set up ignore for 00434 * the following enter notify events. 00435 * 00436 */ 00437 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) { 00438 DLOG("configure_event, sequence %d\n", event->sequence); 00439 /* We ignore this sequence twice because events for child and frame should be ignored */ 00440 add_ignore_event(event->sequence); 00441 add_ignore_event(event->sequence); 00442 00443 return 1; 00444 } 00445 #endif 00446 00447 /* 00448 * Gets triggered upon a RandR screen change event, that is when the user 00449 * changes the screen configuration in any way (mode, position, …) 00450 * 00451 */ 00452 static void handle_screen_change(xcb_generic_event_t *e) { 00453 DLOG("RandR screen change\n"); 00454 00455 randr_query_outputs(); 00456 00457 ipc_send_event("output", I3_IPC_EVENT_OUTPUT, "{\"change\":\"unspecified\"}"); 00458 00459 return; 00460 } 00461 00462 /* 00463 * Our window decorations were unmapped. That means, the window will be killed 00464 * now, so we better clean up before. 00465 * 00466 */ 00467 static void handle_unmap_notify_event(xcb_unmap_notify_event_t *event) { 00468 DLOG("UnmapNotify for 0x%08x (received from 0x%08x), serial %d\n", event->window, event->event, event->sequence); 00469 xcb_get_input_focus_cookie_t cookie; 00470 Con *con = con_by_window_id(event->window); 00471 if (con == NULL) { 00472 /* This could also be an UnmapNotify for the frame. We need to 00473 * decrement the ignore_unmap counter. */ 00474 con = con_by_frame_id(event->window); 00475 if (con == NULL) { 00476 LOG("Not a managed window, ignoring UnmapNotify event\n"); 00477 return; 00478 } 00479 00480 if (con->ignore_unmap > 0) 00481 con->ignore_unmap--; 00482 /* See the end of this function. */ 00483 cookie = xcb_get_input_focus(conn); 00484 DLOG("ignore_unmap = %d for frame of container %p\n", con->ignore_unmap, con); 00485 goto ignore_end; 00486 } 00487 00488 /* See the end of this function. */ 00489 cookie = xcb_get_input_focus(conn); 00490 00491 if (con->ignore_unmap > 0) { 00492 DLOG("ignore_unmap = %d, dec\n", con->ignore_unmap); 00493 con->ignore_unmap--; 00494 goto ignore_end; 00495 } 00496 00497 tree_close(con, DONT_KILL_WINDOW, false, false); 00498 tree_render(); 00499 x_push_changes(croot); 00500 00501 ignore_end: 00502 /* If the client (as opposed to i3) destroyed or unmapped a window, an 00503 * EnterNotify event will follow (indistinguishable from an EnterNotify 00504 * event caused by moving your mouse), causing i3 to set focus to whichever 00505 * window is now visible. 00506 * 00507 * In a complex stacked or tabbed layout (take two v-split containers in a 00508 * tabbed container), when the bottom window in tab2 is closed, the bottom 00509 * window of tab1 is visible instead. X11 will thus send an EnterNotify 00510 * event for the bottom window of tab1, while the focus should be set to 00511 * the remaining window of tab2. 00512 * 00513 * Therefore, we ignore all EnterNotify events which have the same sequence 00514 * as an UnmapNotify event. */ 00515 add_ignore_event(event->sequence, XCB_ENTER_NOTIFY); 00516 00517 /* Since we just ignored the sequence of this UnmapNotify, we want to make 00518 * sure that following events use a different sequence. When putting xterm 00519 * into fullscreen and moving the pointer to a different window, without 00520 * using GetInputFocus, subsequent (legitimate) EnterNotify events arrived 00521 * with the same sequence and thus were ignored (see ticket #609). */ 00522 free(xcb_get_input_focus_reply(conn, cookie, NULL)); 00523 } 00524 00525 /* 00526 * A destroy notify event is sent when the window is not unmapped, but 00527 * immediately destroyed (for example when starting a window and immediately 00528 * killing the program which started it). 00529 * 00530 * We just pass on the event to the unmap notify handler (by copying the 00531 * important fields in the event data structure). 00532 * 00533 */ 00534 static void handle_destroy_notify_event(xcb_destroy_notify_event_t *event) { 00535 DLOG("destroy notify for 0x%08x, 0x%08x\n", event->event, event->window); 00536 00537 xcb_unmap_notify_event_t unmap; 00538 unmap.sequence = event->sequence; 00539 unmap.event = event->event; 00540 unmap.window = event->window; 00541 00542 handle_unmap_notify_event(&unmap); 00543 } 00544 00545 /* 00546 * Called when a window changes its title 00547 * 00548 */ 00549 static bool handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state, 00550 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) { 00551 Con *con; 00552 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) 00553 return false; 00554 00555 window_update_name(con->window, prop, false); 00556 00557 x_push_changes(croot); 00558 00559 return true; 00560 } 00561 00562 /* 00563 * Handles legacy window name updates (WM_NAME), see also src/window.c, 00564 * window_update_name_legacy(). 00565 * 00566 */ 00567 static bool handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state, 00568 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) { 00569 Con *con; 00570 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) 00571 return false; 00572 00573 window_update_name_legacy(con->window, prop, false); 00574 00575 x_push_changes(croot); 00576 00577 return true; 00578 } 00579 00580 /* 00581 * Called when a window changes its WM_WINDOW_ROLE. 00582 * 00583 */ 00584 static bool handle_windowrole_change(void *data, xcb_connection_t *conn, uint8_t state, 00585 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) { 00586 Con *con; 00587 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) 00588 return false; 00589 00590 window_update_role(con->window, prop, false); 00591 00592 return true; 00593 } 00594 00595 #if 0 00596 /* 00597 * Updates the client’s WM_CLASS property 00598 * 00599 */ 00600 static int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state, 00601 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) { 00602 Con *con; 00603 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) 00604 return 1; 00605 00606 window_update_class(con->window, prop, false); 00607 00608 return 0; 00609 } 00610 #endif 00611 00612 /* 00613 * Expose event means we should redraw our windows (= title bar) 00614 * 00615 */ 00616 static void handle_expose_event(xcb_expose_event_t *event) { 00617 Con *parent; 00618 00619 DLOG("window = %08x\n", event->window); 00620 00621 if ((parent = con_by_frame_id(event->window)) == NULL) { 00622 LOG("expose event for unknown window, ignoring\n"); 00623 return; 00624 } 00625 00626 /* Since we render to our pixmap on every change anyways, expose events 00627 * only tell us that the X server lost (parts of) the window contents. We 00628 * can handle that by copying the appropriate part from our pixmap to the 00629 * window. */ 00630 xcb_copy_area(conn, parent->pixmap, parent->frame, parent->pm_gc, 00631 event->x, event->y, event->x, event->y, 00632 event->width, event->height); 00633 xcb_flush(conn); 00634 00635 return; 00636 } 00637 00638 /* 00639 * Handle client messages (EWMH) 00640 * 00641 */ 00642 static void handle_client_message(xcb_client_message_event_t *event) { 00643 /* If this is a startup notification ClientMessage, the library will handle 00644 * it and call our monitor_event() callback. */ 00645 if (sn_xcb_display_process_event(sndisplay, (xcb_generic_event_t*)event)) 00646 return; 00647 00648 LOG("ClientMessage for window 0x%08x\n", event->window); 00649 if (event->type == A__NET_WM_STATE) { 00650 if (event->format != 32 || event->data.data32[1] != A__NET_WM_STATE_FULLSCREEN) { 00651 DLOG("atom in clientmessage is %d, fullscreen is %d\n", 00652 event->data.data32[1], A__NET_WM_STATE_FULLSCREEN); 00653 DLOG("not about fullscreen atom\n"); 00654 return; 00655 } 00656 00657 Con *con = con_by_window_id(event->window); 00658 if (con == NULL) { 00659 DLOG("Could not get window for client message\n"); 00660 return; 00661 } 00662 00663 /* Check if the fullscreen state should be toggled */ 00664 if ((con->fullscreen_mode != CF_NONE && 00665 (event->data.data32[0] == _NET_WM_STATE_REMOVE || 00666 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) || 00667 (con->fullscreen_mode == CF_NONE && 00668 (event->data.data32[0] == _NET_WM_STATE_ADD || 00669 event->data.data32[0] == _NET_WM_STATE_TOGGLE))) { 00670 DLOG("toggling fullscreen\n"); 00671 con_toggle_fullscreen(con, CF_OUTPUT); 00672 } 00673 00674 tree_render(); 00675 x_push_changes(croot); 00676 } else if (event->type == A_I3_SYNC) { 00677 DLOG("i3 sync, yay\n"); 00678 xcb_window_t window = event->data.data32[0]; 00679 uint32_t rnd = event->data.data32[1]; 00680 DLOG("Sending random value %d back to X11 window 0x%08x\n", rnd, window); 00681 00682 void *reply = scalloc(32); 00683 xcb_client_message_event_t *ev = reply; 00684 00685 ev->response_type = XCB_CLIENT_MESSAGE; 00686 ev->window = window; 00687 ev->type = A_I3_SYNC; 00688 ev->format = 32; 00689 ev->data.data32[0] = window; 00690 ev->data.data32[1] = rnd; 00691 00692 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char*)ev); 00693 xcb_flush(conn); 00694 free(reply); 00695 } else { 00696 DLOG("unhandled clientmessage\n"); 00697 return; 00698 } 00699 } 00700 00701 #if 0 00702 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, 00703 xcb_atom_t atom, xcb_get_property_reply_t *property) { 00704 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s 00705 before changing this property. */ 00706 ELOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n"); 00707 return 0; 00708 } 00709 #endif 00710 00711 /* 00712 * Handles the size hints set by a window, but currently only the part necessary for displaying 00713 * clients proportionally inside their frames (mplayer for example) 00714 * 00715 * See ICCCM 4.1.2.3 for more details 00716 * 00717 */ 00718 static bool handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, 00719 xcb_atom_t name, xcb_get_property_reply_t *reply) { 00720 Con *con = con_by_window_id(window); 00721 if (con == NULL) { 00722 DLOG("Received WM_NORMAL_HINTS for unknown client\n"); 00723 return false; 00724 } 00725 00726 xcb_size_hints_t size_hints; 00727 00728 //CLIENT_LOG(client); 00729 00730 /* If the hints were already in this event, use them, if not, request them */ 00731 if (reply != NULL) 00732 xcb_icccm_get_wm_size_hints_from_reply(&size_hints, reply); 00733 else 00734 xcb_icccm_get_wm_normal_hints_reply(conn, xcb_icccm_get_wm_normal_hints_unchecked(conn, con->window->id), &size_hints, NULL); 00735 00736 if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE)) { 00737 // TODO: Minimum size is not yet implemented 00738 DLOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height); 00739 } 00740 00741 bool changed = false; 00742 if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_RESIZE_INC)) { 00743 if (size_hints.width_inc > 0 && size_hints.width_inc < 0xFFFF) 00744 if (con->width_increment != size_hints.width_inc) { 00745 con->width_increment = size_hints.width_inc; 00746 changed = true; 00747 } 00748 if (size_hints.height_inc > 0 && size_hints.height_inc < 0xFFFF) 00749 if (con->height_increment != size_hints.height_inc) { 00750 con->height_increment = size_hints.height_inc; 00751 changed = true; 00752 } 00753 00754 if (changed) 00755 DLOG("resize increments changed\n"); 00756 } 00757 00758 int base_width = 0, base_height = 0; 00759 00760 /* base_width/height are the desired size of the window. 00761 We check if either the program-specified size or the program-specified 00762 min-size is available */ 00763 if (size_hints.flags & XCB_ICCCM_SIZE_HINT_BASE_SIZE) { 00764 base_width = size_hints.base_width; 00765 base_height = size_hints.base_height; 00766 } else if (size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE) { 00767 /* TODO: is this right? icccm says not */ 00768 base_width = size_hints.min_width; 00769 base_height = size_hints.min_height; 00770 } 00771 00772 if (base_width != con->base_width || 00773 base_height != con->base_height) { 00774 con->base_width = base_width; 00775 con->base_height = base_height; 00776 DLOG("client's base_height changed to %d\n", base_height); 00777 DLOG("client's base_width changed to %d\n", base_width); 00778 changed = true; 00779 } 00780 00781 /* If no aspect ratio was set or if it was invalid, we ignore the hints */ 00782 if (!(size_hints.flags & XCB_ICCCM_SIZE_HINT_P_ASPECT) || 00783 (size_hints.min_aspect_num <= 0) || 00784 (size_hints.min_aspect_den <= 0)) { 00785 goto render_and_return; 00786 } 00787 00788 /* XXX: do we really use rect here, not window_rect? */ 00789 double width = con->rect.width - base_width; 00790 double height = con->rect.height - base_height; 00791 /* Convert numerator/denominator to a double */ 00792 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den; 00793 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den; 00794 00795 DLOG("Aspect ratio set: minimum %f, maximum %f\n", min_aspect, max_aspect); 00796 DLOG("width = %f, height = %f\n", width, height); 00797 00798 /* Sanity checks, this is user-input, in a way */ 00799 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0) 00800 goto render_and_return; 00801 00802 /* Check if we need to set proportional_* variables using the correct ratio */ 00803 if ((width / height) < min_aspect) { 00804 if (con->proportional_width != width || 00805 con->proportional_height != (width / min_aspect)) { 00806 con->proportional_width = width; 00807 con->proportional_height = width / min_aspect; 00808 changed = true; 00809 } 00810 } else if ((width / height) > max_aspect) { 00811 if (con->proportional_width != width || 00812 con->proportional_height != (width / max_aspect)) { 00813 con->proportional_width = width; 00814 con->proportional_height = width / max_aspect; 00815 changed = true; 00816 } 00817 } else goto render_and_return; 00818 00819 render_and_return: 00820 if (changed) 00821 tree_render(); 00822 FREE(reply); 00823 return true; 00824 } 00825 00826 /* 00827 * Handles the WM_HINTS property for extracting the urgency state of the window. 00828 * 00829 */ 00830 static bool handle_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, 00831 xcb_atom_t name, xcb_get_property_reply_t *reply) { 00832 Con *con = con_by_window_id(window); 00833 if (con == NULL) { 00834 DLOG("Received WM_HINTS for unknown client\n"); 00835 return false; 00836 } 00837 00838 xcb_icccm_wm_hints_t hints; 00839 00840 if (reply == NULL) 00841 if (!(reply = xcb_get_property_reply(conn, xcb_icccm_get_wm_hints(conn, window), NULL))) 00842 return false; 00843 00844 if (!xcb_icccm_get_wm_hints_from_reply(&hints, reply)) 00845 return false; 00846 00847 if (!con->urgent && focused == con) { 00848 DLOG("Ignoring urgency flag for current client\n"); 00849 con->window->urgent.tv_sec = 0; 00850 con->window->urgent.tv_usec = 0; 00851 goto end; 00852 } 00853 00854 /* Update the flag on the client directly */ 00855 con->urgent = (xcb_icccm_wm_hints_get_urgency(&hints) != 0); 00856 //CLIENT_LOG(con); 00857 if (con->window) { 00858 if (con->urgent) { 00859 gettimeofday(&con->window->urgent, NULL); 00860 } else { 00861 con->window->urgent.tv_sec = 0; 00862 con->window->urgent.tv_usec = 0; 00863 } 00864 } 00865 LOG("Urgency flag changed to %d\n", con->urgent); 00866 00867 Con *ws; 00868 /* Set the urgency flag on the workspace, if a workspace could be found 00869 * (for dock clients, that is not the case). */ 00870 if ((ws = con_get_workspace(con)) != NULL) 00871 workspace_update_urgent_flag(ws); 00872 00873 tree_render(); 00874 00875 end: 00876 if (con->window) 00877 window_update_hints(con->window, reply); 00878 else free(reply); 00879 return true; 00880 } 00881 00882 /* 00883 * Handles the transient for hints set by a window, signalizing that this window is a popup window 00884 * for some other window. 00885 * 00886 * See ICCCM 4.1.2.6 for more details 00887 * 00888 */ 00889 static bool handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, 00890 xcb_atom_t name, xcb_get_property_reply_t *prop) { 00891 Con *con; 00892 00893 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) { 00894 DLOG("No such window\n"); 00895 return false; 00896 } 00897 00898 if (prop == NULL) { 00899 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn, 00900 false, window, XCB_ATOM_WM_TRANSIENT_FOR, XCB_ATOM_WINDOW, 0, 32), NULL); 00901 if (prop == NULL) 00902 return false; 00903 } 00904 00905 window_update_transient_for(con->window, prop); 00906 00907 return true; 00908 } 00909 00910 /* 00911 * Handles changes of the WM_CLIENT_LEADER atom which specifies if this is a 00912 * toolwindow (or similar) and to which window it belongs (logical parent). 00913 * 00914 */ 00915 static bool handle_clientleader_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, 00916 xcb_atom_t name, xcb_get_property_reply_t *prop) { 00917 Con *con; 00918 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) 00919 return false; 00920 00921 if (prop == NULL) { 00922 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn, 00923 false, window, A_WM_CLIENT_LEADER, XCB_ATOM_WINDOW, 0, 32), NULL); 00924 if (prop == NULL) 00925 return false; 00926 } 00927 00928 window_update_leader(con->window, prop); 00929 00930 return true; 00931 } 00932 00933 /* 00934 * Handles FocusIn events which are generated by clients (i3’s focus changes 00935 * don’t generate FocusIn events due to a different EventMask) and updates the 00936 * decorations accordingly. 00937 * 00938 */ 00939 static void handle_focus_in(xcb_focus_in_event_t *event) { 00940 DLOG("focus change in, for window 0x%08x\n", event->event); 00941 Con *con; 00942 if ((con = con_by_window_id(event->event)) == NULL || con->window == NULL) 00943 return; 00944 DLOG("That is con %p / %s\n", con, con->name); 00945 00946 if (event->mode == XCB_NOTIFY_MODE_GRAB || 00947 event->mode == XCB_NOTIFY_MODE_UNGRAB) { 00948 DLOG("FocusIn event for grab/ungrab, ignoring\n"); 00949 return; 00950 } 00951 00952 if (event->detail == XCB_NOTIFY_DETAIL_POINTER) { 00953 DLOG("notify detail is pointer, ignoring this event\n"); 00954 return; 00955 } 00956 00957 if (focused_id == event->event) { 00958 DLOG("focus matches the currently focused window, not doing anything\n"); 00959 return; 00960 } 00961 00962 /* Skip dock clients, they cannot get the i3 focus. */ 00963 if (con->parent->type == CT_DOCKAREA) { 00964 DLOG("This is a dock client, not focusing.\n"); 00965 return; 00966 } 00967 00968 DLOG("focus is different, updating decorations\n"); 00969 00970 /* Get the currently focused workspace to check if the focus change also 00971 * involves changing workspaces. If so, we need to call workspace_show() to 00972 * correctly update state and send the IPC event. */ 00973 Con *ws = con_get_workspace(con); 00974 if (ws != con_get_workspace(focused)) 00975 workspace_show(ws); 00976 00977 con_focus(con); 00978 /* We update focused_id because we don’t need to set focus again */ 00979 focused_id = event->event; 00980 x_push_changes(croot); 00981 return; 00982 } 00983 00984 /* Returns false if the event could not be processed (e.g. the window could not 00985 * be found), true otherwise */ 00986 typedef bool (*cb_property_handler_t)(void *data, xcb_connection_t *c, uint8_t state, xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *property); 00987 00988 struct property_handler_t { 00989 xcb_atom_t atom; 00990 uint32_t long_len; 00991 cb_property_handler_t cb; 00992 }; 00993 00994 static struct property_handler_t property_handlers[] = { 00995 { 0, 128, handle_windowname_change }, 00996 { 0, UINT_MAX, handle_hints }, 00997 { 0, 128, handle_windowname_change_legacy }, 00998 { 0, UINT_MAX, handle_normal_hints }, 00999 { 0, UINT_MAX, handle_clientleader_change }, 01000 { 0, UINT_MAX, handle_transient_for }, 01001 { 0, 128, handle_windowrole_change } 01002 }; 01003 #define NUM_HANDLERS (sizeof(property_handlers) / sizeof(struct property_handler_t)) 01004 01005 /* 01006 * Sets the appropriate atoms for the property handlers after the atoms were 01007 * received from X11 01008 * 01009 */ 01010 void property_handlers_init(void) { 01011 01012 sn_monitor_context_new(sndisplay, conn_screen, startup_monitor_event, NULL, NULL); 01013 01014 property_handlers[0].atom = A__NET_WM_NAME; 01015 property_handlers[1].atom = XCB_ATOM_WM_HINTS; 01016 property_handlers[2].atom = XCB_ATOM_WM_NAME; 01017 property_handlers[3].atom = XCB_ATOM_WM_NORMAL_HINTS; 01018 property_handlers[4].atom = A_WM_CLIENT_LEADER; 01019 property_handlers[5].atom = XCB_ATOM_WM_TRANSIENT_FOR; 01020 property_handlers[6].atom = A_WM_WINDOW_ROLE; 01021 } 01022 01023 static void property_notify(uint8_t state, xcb_window_t window, xcb_atom_t atom) { 01024 struct property_handler_t *handler = NULL; 01025 xcb_get_property_reply_t *propr = NULL; 01026 01027 for (int c = 0; c < sizeof(property_handlers) / sizeof(struct property_handler_t); c++) { 01028 if (property_handlers[c].atom != atom) 01029 continue; 01030 01031 handler = &property_handlers[c]; 01032 break; 01033 } 01034 01035 if (handler == NULL) { 01036 //DLOG("Unhandled property notify for atom %d (0x%08x)\n", atom, atom); 01037 return; 01038 } 01039 01040 if (state != XCB_PROPERTY_DELETE) { 01041 xcb_get_property_cookie_t cookie = xcb_get_property(conn, 0, window, atom, XCB_GET_PROPERTY_TYPE_ANY, 0, handler->long_len); 01042 propr = xcb_get_property_reply(conn, cookie, 0); 01043 } 01044 01045 /* the handler will free() the reply unless it returns false */ 01046 if (!handler->cb(NULL, conn, state, window, atom, propr)) 01047 FREE(propr); 01048 } 01049 01050 /* 01051 * Takes an xcb_generic_event_t and calls the appropriate handler, based on the 01052 * event type. 01053 * 01054 */ 01055 void handle_event(int type, xcb_generic_event_t *event) { 01056 if (randr_base > -1 && 01057 type == randr_base + XCB_RANDR_SCREEN_CHANGE_NOTIFY) { 01058 handle_screen_change(event); 01059 return; 01060 } 01061 01062 switch (type) { 01063 case XCB_KEY_PRESS: 01064 handle_key_press((xcb_key_press_event_t*)event); 01065 break; 01066 01067 case XCB_BUTTON_PRESS: 01068 handle_button_press((xcb_button_press_event_t*)event); 01069 break; 01070 01071 case XCB_MAP_REQUEST: 01072 handle_map_request((xcb_map_request_event_t*)event); 01073 break; 01074 01075 case XCB_UNMAP_NOTIFY: 01076 handle_unmap_notify_event((xcb_unmap_notify_event_t*)event); 01077 break; 01078 01079 case XCB_DESTROY_NOTIFY: 01080 handle_destroy_notify_event((xcb_destroy_notify_event_t*)event); 01081 break; 01082 01083 case XCB_EXPOSE: 01084 handle_expose_event((xcb_expose_event_t*)event); 01085 break; 01086 01087 case XCB_MOTION_NOTIFY: 01088 handle_motion_notify((xcb_motion_notify_event_t*)event); 01089 break; 01090 01091 /* Enter window = user moved his mouse over the window */ 01092 case XCB_ENTER_NOTIFY: 01093 handle_enter_notify((xcb_enter_notify_event_t*)event); 01094 break; 01095 01096 /* Client message are sent to the root window. The only interesting 01097 * client message for us is _NET_WM_STATE, we honour 01098 * _NET_WM_STATE_FULLSCREEN */ 01099 case XCB_CLIENT_MESSAGE: 01100 handle_client_message((xcb_client_message_event_t*)event); 01101 break; 01102 01103 /* Configure request = window tried to change size on its own */ 01104 case XCB_CONFIGURE_REQUEST: 01105 handle_configure_request((xcb_configure_request_event_t*)event); 01106 break; 01107 01108 /* Mapping notify = keyboard mapping changed (Xmodmap), re-grab bindings */ 01109 case XCB_MAPPING_NOTIFY: 01110 handle_mapping_notify((xcb_mapping_notify_event_t*)event); 01111 break; 01112 01113 case XCB_FOCUS_IN: 01114 handle_focus_in((xcb_focus_in_event_t*)event); 01115 break; 01116 01117 case XCB_PROPERTY_NOTIFY: { 01118 xcb_property_notify_event_t *e = (xcb_property_notify_event_t*)event; 01119 last_timestamp = e->time; 01120 property_notify(e->state, e->window, e->atom); 01121 break; 01122 } 01123 01124 default: 01125 //DLOG("Unhandled event of type %d\n", type); 01126 break; 01127 } 01128 }