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00001 /* 00002 * vim:ts=4:sw=4:expandtab 00003 * 00004 * i3 - an improved dynamic tiling window manager 00005 * © 2009-2010 Michael Stapelberg and contributors (see also: LICENSE) 00006 * 00007 */ 00008 #include <time.h> 00009 #include <limits.h> 00010 00011 #include <xcb/randr.h> 00012 00013 #include <X11/XKBlib.h> 00014 00015 #include "all.h" 00016 00017 int randr_base = -1; 00018 00019 /* After mapping/unmapping windows, a notify event is generated. However, we don’t want it, 00020 since it’d trigger an infinite loop of switching between the different windows when 00021 changing workspaces */ 00022 static SLIST_HEAD(ignore_head, Ignore_Event) ignore_events; 00023 00024 /* 00025 * Adds the given sequence to the list of events which are ignored. 00026 * If this ignore should only affect a specific response_type, pass 00027 * response_type, otherwise, pass -1. 00028 * 00029 * Every ignored sequence number gets garbage collected after 5 seconds. 00030 * 00031 */ 00032 void add_ignore_event(const int sequence, const int response_type) { 00033 struct Ignore_Event *event = smalloc(sizeof(struct Ignore_Event)); 00034 00035 event->sequence = sequence; 00036 event->response_type = response_type; 00037 event->added = time(NULL); 00038 00039 SLIST_INSERT_HEAD(&ignore_events, event, ignore_events); 00040 } 00041 00042 /* 00043 * Checks if the given sequence is ignored and returns true if so. 00044 * 00045 */ 00046 bool event_is_ignored(const int sequence, const int response_type) { 00047 struct Ignore_Event *event; 00048 time_t now = time(NULL); 00049 for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) { 00050 if ((now - event->added) > 5) { 00051 struct Ignore_Event *save = event; 00052 event = SLIST_NEXT(event, ignore_events); 00053 SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events); 00054 free(save); 00055 } else event = SLIST_NEXT(event, ignore_events); 00056 } 00057 00058 SLIST_FOREACH(event, &ignore_events, ignore_events) { 00059 if (event->sequence != sequence) 00060 continue; 00061 00062 if (event->response_type != -1 && 00063 event->response_type != response_type) 00064 continue; 00065 00066 /* instead of removing a sequence number we better wait until it gets 00067 * garbage collected. it may generate multiple events (there are multiple 00068 * enter_notifies for one configure_request, for example). */ 00069 //SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events); 00070 //free(event); 00071 return true; 00072 } 00073 00074 return false; 00075 } 00076 00077 00078 /* 00079 * There was a key press. We compare this key code with our bindings table and pass 00080 * the bound action to parse_command(). 00081 * 00082 */ 00083 static int handle_key_press(xcb_key_press_event_t *event) { 00084 DLOG("Keypress %d, state raw = %d\n", event->detail, event->state); 00085 00086 /* Remove the numlock bit, all other bits are modifiers we can bind to */ 00087 uint16_t state_filtered = event->state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK); 00088 DLOG("(removed numlock, state = %d)\n", state_filtered); 00089 /* Only use the lower 8 bits of the state (modifier masks) so that mouse 00090 * button masks are filtered out */ 00091 state_filtered &= 0xFF; 00092 DLOG("(removed upper 8 bits, state = %d)\n", state_filtered); 00093 00094 if (xkb_current_group == XkbGroup2Index) 00095 state_filtered |= BIND_MODE_SWITCH; 00096 00097 DLOG("(checked mode_switch, state %d)\n", state_filtered); 00098 00099 /* Find the binding */ 00100 Binding *bind = get_binding(state_filtered, event->detail); 00101 00102 /* No match? Then the user has Mode_switch enabled but does not have a 00103 * specific keybinding. Fall back to the default keybindings (without 00104 * Mode_switch). Makes it much more convenient for users of a hybrid 00105 * layout (like us, ru). */ 00106 if (bind == NULL) { 00107 state_filtered &= ~(BIND_MODE_SWITCH); 00108 DLOG("no match, new state_filtered = %d\n", state_filtered); 00109 if ((bind = get_binding(state_filtered, event->detail)) == NULL) { 00110 ELOG("Could not lookup key binding (modifiers %d, keycode %d)\n", 00111 state_filtered, event->detail); 00112 return 1; 00113 } 00114 } 00115 00116 parse_cmd(bind->command); 00117 return 1; 00118 } 00119 00120 /* 00121 * Called with coordinates of an enter_notify event or motion_notify event 00122 * to check if the user crossed virtual screen boundaries and adjust the 00123 * current workspace, if so. 00124 * 00125 */ 00126 static void check_crossing_screen_boundary(uint32_t x, uint32_t y) { 00127 Output *output; 00128 00129 /* If the user disable focus follows mouse, we have nothing to do here */ 00130 if (config.disable_focus_follows_mouse) 00131 return; 00132 00133 if ((output = get_output_containing(x, y)) == NULL) { 00134 ELOG("ERROR: No such screen\n"); 00135 return; 00136 } 00137 00138 if (output->con == NULL) { 00139 ELOG("ERROR: The screen is not recognized by i3 (no container associated)\n"); 00140 return; 00141 } 00142 00143 /* Focus the output on which the user moved his cursor */ 00144 Con *old_focused = focused; 00145 con_focus(con_descend_focused(output_get_content(output->con))); 00146 00147 /* If the focus changed, we re-render to get updated decorations */ 00148 if (old_focused != focused) 00149 tree_render(); 00150 } 00151 00152 /* 00153 * When the user moves the mouse pointer onto a window, this callback gets called. 00154 * 00155 */ 00156 static int handle_enter_notify(xcb_enter_notify_event_t *event) { 00157 Con *con; 00158 00159 DLOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n", 00160 event->event, event->mode, event->detail, event->sequence); 00161 DLOG("coordinates %d, %d\n", event->event_x, event->event_y); 00162 if (event->mode != XCB_NOTIFY_MODE_NORMAL) { 00163 DLOG("This was not a normal notify, ignoring\n"); 00164 return 1; 00165 } 00166 /* Some events are not interesting, because they were not generated 00167 * actively by the user, but by reconfiguration of windows */ 00168 if (event_is_ignored(event->sequence, XCB_ENTER_NOTIFY)) { 00169 DLOG("Event ignored\n"); 00170 return 1; 00171 } 00172 00173 bool enter_child = false; 00174 /* Get container by frame or by child window */ 00175 if ((con = con_by_frame_id(event->event)) == NULL) { 00176 con = con_by_window_id(event->event); 00177 enter_child = true; 00178 } 00179 00180 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */ 00181 if (con == NULL) { 00182 DLOG("Getting screen at %d x %d\n", event->root_x, event->root_y); 00183 check_crossing_screen_boundary(event->root_x, event->root_y); 00184 return 1; 00185 } 00186 00187 if (con->parent->type == CT_DOCKAREA) { 00188 DLOG("Ignoring, this is a dock client\n"); 00189 return 1; 00190 } 00191 00192 /* see if the user entered the window on a certain window decoration */ 00193 int layout = (enter_child ? con->parent->layout : con->layout); 00194 if (layout == L_DEFAULT) { 00195 Con *child; 00196 TAILQ_FOREACH(child, &(con->nodes_head), nodes) 00197 if (rect_contains(child->deco_rect, event->event_x, event->event_y)) { 00198 LOG("using child %p / %s instead!\n", child, child->name); 00199 con = child; 00200 break; 00201 } 00202 } 00203 00204 #if 0 00205 if (client->workspace != c_ws && client->workspace->output == c_ws->output) { 00206 /* This can happen when a client gets assigned to a different workspace than 00207 * the current one (see src/mainx.c:reparent_window). Shortly after it was created, 00208 * an enter_notify will follow. */ 00209 DLOG("enter_notify for a client on a different workspace but the same screen, ignoring\n"); 00210 return 1; 00211 } 00212 #endif 00213 00214 if (config.disable_focus_follows_mouse) 00215 return 1; 00216 00217 con_focus(con_descend_focused(con)); 00218 tree_render(); 00219 00220 return 1; 00221 } 00222 00223 /* 00224 * When the user moves the mouse but does not change the active window 00225 * (e.g. when having no windows opened but moving mouse on the root screen 00226 * and crossing virtual screen boundaries), this callback gets called. 00227 * 00228 */ 00229 static int handle_motion_notify(xcb_motion_notify_event_t *event) { 00230 /* Skip events where the pointer was over a child window, we are only 00231 * interested in events on the root window. */ 00232 if (event->child != 0) 00233 return 1; 00234 00235 Con *con; 00236 if ((con = con_by_frame_id(event->event)) == NULL) { 00237 check_crossing_screen_boundary(event->root_x, event->root_y); 00238 return 1; 00239 } 00240 00241 if (config.disable_focus_follows_mouse) 00242 return 1; 00243 00244 if (con->layout != L_DEFAULT) 00245 return 1; 00246 00247 /* see over which rect the user is */ 00248 Con *current; 00249 TAILQ_FOREACH(current, &(con->nodes_head), nodes) { 00250 if (!rect_contains(current->deco_rect, event->event_x, event->event_y)) 00251 continue; 00252 00253 /* We found the rect, let’s see if this window is focused */ 00254 if (TAILQ_FIRST(&(con->focus_head)) == current) 00255 return 1; 00256 00257 con_focus(current); 00258 x_push_changes(croot); 00259 return 1; 00260 } 00261 00262 return 1; 00263 } 00264 00265 /* 00266 * Called when the keyboard mapping changes (for example by using Xmodmap), 00267 * we need to update our key bindings then (re-translate symbols). 00268 * 00269 */ 00270 static int handle_mapping_notify(xcb_mapping_notify_event_t *event) { 00271 if (event->request != XCB_MAPPING_KEYBOARD && 00272 event->request != XCB_MAPPING_MODIFIER) 00273 return 0; 00274 00275 DLOG("Received mapping_notify for keyboard or modifier mapping, re-grabbing keys\n"); 00276 xcb_refresh_keyboard_mapping(keysyms, event); 00277 00278 xcb_get_numlock_mask(conn); 00279 00280 ungrab_all_keys(conn); 00281 translate_keysyms(); 00282 grab_all_keys(conn, false); 00283 00284 return 0; 00285 } 00286 00287 /* 00288 * A new window appeared on the screen (=was mapped), so let’s manage it. 00289 * 00290 */ 00291 static int handle_map_request(xcb_map_request_event_t *event) { 00292 xcb_get_window_attributes_cookie_t cookie; 00293 00294 cookie = xcb_get_window_attributes_unchecked(conn, event->window); 00295 00296 DLOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence); 00297 add_ignore_event(event->sequence, -1); 00298 00299 manage_window(event->window, cookie, false); 00300 x_push_changes(croot); 00301 return 1; 00302 } 00303 00304 /* 00305 * Configure requests are received when the application wants to resize windows on their own. 00306 * 00307 * We generate a synthethic configure notify event to signalize the client its "new" position. 00308 * 00309 */ 00310 static int handle_configure_request(xcb_configure_request_event_t *event) { 00311 Con *con; 00312 00313 DLOG("window 0x%08x wants to be at %dx%d with %dx%d\n", 00314 event->window, event->x, event->y, event->width, event->height); 00315 00316 /* For unmanaged windows, we just execute the configure request. As soon as 00317 * it gets mapped, we will take over anyways. */ 00318 if ((con = con_by_window_id(event->window)) == NULL) { 00319 DLOG("Configure request for unmanaged window, can do that.\n"); 00320 00321 uint32_t mask = 0; 00322 uint32_t values[7]; 00323 int c = 0; 00324 #define COPY_MASK_MEMBER(mask_member, event_member) do { \ 00325 if (event->value_mask & mask_member) { \ 00326 mask |= mask_member; \ 00327 values[c++] = event->event_member; \ 00328 } \ 00329 } while (0) 00330 00331 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x); 00332 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y); 00333 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width); 00334 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height); 00335 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width); 00336 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling); 00337 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode); 00338 00339 xcb_configure_window(conn, event->window, mask, values); 00340 xcb_flush(conn); 00341 00342 return 1; 00343 } 00344 00345 DLOG("Configure request!\n"); 00346 if (con_is_floating(con) && con_is_leaf(con)) { 00347 /* find the height for the decorations */ 00348 int deco_height = config.font.height + 5; 00349 /* we actually need to apply the size/position changes to the *parent* 00350 * container */ 00351 Rect bsr = con_border_style_rect(con); 00352 if (con->border_style == BS_NORMAL) { 00353 bsr.y += deco_height; 00354 bsr.height -= deco_height; 00355 } 00356 con = con->parent; 00357 DLOG("Container is a floating leaf node, will do that.\n"); 00358 if (event->value_mask & XCB_CONFIG_WINDOW_X) { 00359 con->rect.x = event->x + (-1) * bsr.x; 00360 DLOG("proposed x = %d, new x is %d\n", event->x, con->rect.x); 00361 } 00362 if (event->value_mask & XCB_CONFIG_WINDOW_Y) { 00363 con->rect.y = event->y + (-1) * bsr.y; 00364 DLOG("proposed y = %d, new y is %d\n", event->y, con->rect.y); 00365 } 00366 if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH) { 00367 con->rect.width = event->width + (-1) * bsr.width; 00368 DLOG("proposed width = %d, new width is %d\n", event->width, con->rect.width); 00369 } 00370 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) { 00371 con->rect.height = event->height + (-1) * bsr.height; 00372 DLOG("proposed height = %d, new height is %d\n", event->height, con->rect.height); 00373 } 00374 tree_render(); 00375 } 00376 00377 fake_absolute_configure_notify(con); 00378 00379 return 1; 00380 #if 0 00381 /* Dock clients can be reconfigured in their height */ 00382 if (client->dock) { 00383 DLOG("Reconfiguring height of this dock client\n"); 00384 00385 if (!(event->value_mask & XCB_CONFIG_WINDOW_HEIGHT)) { 00386 DLOG("Ignoring configure request, no height given\n"); 00387 return 1; 00388 } 00389 00390 client->desired_height = event->height; 00391 render_workspace(conn, c_ws->output, c_ws); 00392 xcb_flush(conn); 00393 00394 return 1; 00395 } 00396 00397 if (client->fullscreen) { 00398 DLOG("Client is in fullscreen mode\n"); 00399 00400 Rect child_rect = client->container->workspace->rect; 00401 child_rect.x = child_rect.y = 0; 00402 fake_configure_notify(conn, child_rect, client->child); 00403 00404 return 1; 00405 } 00406 00407 fake_absolute_configure_notify(conn, client); 00408 00409 return 1; 00410 #endif 00411 } 00412 #if 0 00413 00414 /* 00415 * Configuration notifies are only handled because we need to set up ignore for 00416 * the following enter notify events. 00417 * 00418 */ 00419 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) { 00420 DLOG("configure_event, sequence %d\n", event->sequence); 00421 /* We ignore this sequence twice because events for child and frame should be ignored */ 00422 add_ignore_event(event->sequence); 00423 add_ignore_event(event->sequence); 00424 00425 return 1; 00426 } 00427 #endif 00428 00429 /* 00430 * Gets triggered upon a RandR screen change event, that is when the user 00431 * changes the screen configuration in any way (mode, position, …) 00432 * 00433 */ 00434 static int handle_screen_change(xcb_generic_event_t *e) { 00435 DLOG("RandR screen change\n"); 00436 00437 randr_query_outputs(); 00438 00439 ipc_send_event("output", I3_IPC_EVENT_OUTPUT, "{\"change\":\"unspecified\"}"); 00440 00441 return 1; 00442 } 00443 00444 /* 00445 * Our window decorations were unmapped. That means, the window will be killed 00446 * now, so we better clean up before. 00447 * 00448 */ 00449 static int handle_unmap_notify_event(xcb_unmap_notify_event_t *event) { 00450 // XXX: this is commented out because in src/x.c we disable EnterNotify events 00451 /* we need to ignore EnterNotify events which will be generated because a 00452 * different window is visible now */ 00453 //add_ignore_event(event->sequence, XCB_ENTER_NOTIFY); 00454 00455 DLOG("UnmapNotify for 0x%08x (received from 0x%08x), serial %d\n", event->window, event->event, event->sequence); 00456 Con *con = con_by_window_id(event->window); 00457 if (con == NULL) { 00458 /* This could also be an UnmapNotify for the frame. We need to 00459 * decrement the ignore_unmap counter. */ 00460 con = con_by_frame_id(event->window); 00461 if (con == NULL) { 00462 LOG("Not a managed window, ignoring UnmapNotify event\n"); 00463 return 1; 00464 } 00465 if (con->ignore_unmap > 0) 00466 con->ignore_unmap--; 00467 DLOG("ignore_unmap = %d for frame of container %p\n", con->ignore_unmap, con); 00468 return 1; 00469 } 00470 00471 if (con->ignore_unmap > 0) { 00472 DLOG("ignore_unmap = %d, dec\n", con->ignore_unmap); 00473 con->ignore_unmap--; 00474 return 1; 00475 } 00476 00477 tree_close(con, DONT_KILL_WINDOW, false); 00478 tree_render(); 00479 x_push_changes(croot); 00480 return 1; 00481 00482 #if 0 00483 if (client == NULL) { 00484 DLOG("not a managed window. Ignoring.\n"); 00485 00486 /* This was most likely the destroyed frame of a client which is 00487 * currently being unmapped, so we add this sequence (again!) to 00488 * the ignore list (enter_notify events will get sent for both, 00489 * the child and its frame). */ 00490 add_ignore_event(event->sequence); 00491 00492 return 0; 00493 } 00494 #endif 00495 00496 00497 #if 0 00498 /* Let’s see how many clients there are left on the workspace to delete it if it’s empty */ 00499 bool workspace_empty = SLIST_EMPTY(&(client->workspace->focus_stack)); 00500 bool workspace_focused = (c_ws == client->workspace); 00501 Client *to_focus = (!workspace_empty ? SLIST_FIRST(&(client->workspace->focus_stack)) : NULL); 00502 00503 /* If this workspace is currently visible, we don’t delete it */ 00504 if (workspace_is_visible(client->workspace)) 00505 workspace_empty = false; 00506 00507 if (workspace_empty) { 00508 client->workspace->output = NULL; 00509 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"empty\"}"); 00510 } 00511 00512 /* Remove the urgency flag if set */ 00513 client->urgent = false; 00514 workspace_update_urgent_flag(client->workspace); 00515 00516 render_layout(conn); 00517 #endif 00518 00519 return 1; 00520 } 00521 00522 /* 00523 * A destroy notify event is sent when the window is not unmapped, but 00524 * immediately destroyed (for example when starting a window and immediately 00525 * killing the program which started it). 00526 * 00527 * We just pass on the event to the unmap notify handler (by copying the 00528 * important fields in the event data structure). 00529 * 00530 */ 00531 static int handle_destroy_notify_event(xcb_destroy_notify_event_t *event) { 00532 DLOG("destroy notify for 0x%08x, 0x%08x\n", event->event, event->window); 00533 00534 xcb_unmap_notify_event_t unmap; 00535 unmap.sequence = event->sequence; 00536 unmap.event = event->event; 00537 unmap.window = event->window; 00538 00539 return handle_unmap_notify_event(&unmap); 00540 } 00541 00542 /* 00543 * Called when a window changes its title 00544 * 00545 */ 00546 static bool handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state, 00547 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) { 00548 Con *con; 00549 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) 00550 return false; 00551 00552 window_update_name(con->window, prop, false); 00553 00554 x_push_changes(croot); 00555 00556 return true; 00557 } 00558 00559 /* 00560 * Handles legacy window name updates (WM_NAME), see also src/window.c, 00561 * window_update_name_legacy(). 00562 * 00563 */ 00564 static bool handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state, 00565 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) { 00566 Con *con; 00567 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) 00568 return false; 00569 00570 window_update_name_legacy(con->window, prop, false); 00571 00572 x_push_changes(croot); 00573 00574 return true; 00575 } 00576 00577 #if 0 00578 /* 00579 * Updates the client’s WM_CLASS property 00580 * 00581 */ 00582 static int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state, 00583 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) { 00584 Con *con; 00585 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) 00586 return 1; 00587 00588 window_update_class(con->window, prop, false); 00589 00590 return 0; 00591 } 00592 #endif 00593 00594 /* 00595 * Expose event means we should redraw our windows (= title bar) 00596 * 00597 */ 00598 static int handle_expose_event(xcb_expose_event_t *event) { 00599 Con *parent; 00600 00601 /* event->count is the number of minimum remaining expose events for this 00602 * window, so we skip all events but the last one */ 00603 if (event->count != 0) 00604 return 1; 00605 00606 DLOG("window = %08x\n", event->window); 00607 00608 if ((parent = con_by_frame_id(event->window)) == NULL) { 00609 LOG("expose event for unknown window, ignoring\n"); 00610 return 1; 00611 } 00612 00613 /* re-render the parent (recursively, if it’s a split con) */ 00614 x_deco_recurse(parent); 00615 xcb_flush(conn); 00616 00617 return 1; 00618 } 00619 00620 /* 00621 * Handle client messages (EWMH) 00622 * 00623 */ 00624 static int handle_client_message(xcb_client_message_event_t *event) { 00625 LOG("ClientMessage for window 0x%08x\n", event->window); 00626 if (event->type == A__NET_WM_STATE) { 00627 if (event->format != 32 || event->data.data32[1] != A__NET_WM_STATE_FULLSCREEN) { 00628 DLOG("atom in clientmessage is %d, fullscreen is %d\n", 00629 event->data.data32[1], A__NET_WM_STATE_FULLSCREEN); 00630 DLOG("not about fullscreen atom\n"); 00631 return 0; 00632 } 00633 00634 Con *con = con_by_window_id(event->window); 00635 if (con == NULL) { 00636 DLOG("Could not get window for client message\n"); 00637 return 0; 00638 } 00639 00640 /* Check if the fullscreen state should be toggled */ 00641 if ((con->fullscreen_mode != CF_NONE && 00642 (event->data.data32[0] == _NET_WM_STATE_REMOVE || 00643 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) || 00644 (con->fullscreen_mode == CF_NONE && 00645 (event->data.data32[0] == _NET_WM_STATE_ADD || 00646 event->data.data32[0] == _NET_WM_STATE_TOGGLE))) { 00647 DLOG("toggling fullscreen\n"); 00648 con_toggle_fullscreen(con, CF_OUTPUT); 00649 } 00650 00651 tree_render(); 00652 x_push_changes(croot); 00653 } else { 00654 ELOG("unhandled clientmessage\n"); 00655 return 0; 00656 } 00657 00658 return 1; 00659 } 00660 00661 #if 0 00662 int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, 00663 xcb_atom_t atom, xcb_get_property_reply_t *property) { 00664 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s 00665 before changing this property. */ 00666 ELOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n"); 00667 return 0; 00668 } 00669 #endif 00670 00671 /* 00672 * Handles the size hints set by a window, but currently only the part necessary for displaying 00673 * clients proportionally inside their frames (mplayer for example) 00674 * 00675 * See ICCCM 4.1.2.3 for more details 00676 * 00677 */ 00678 static bool handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, 00679 xcb_atom_t name, xcb_get_property_reply_t *reply) { 00680 Con *con = con_by_window_id(window); 00681 if (con == NULL) { 00682 DLOG("Received WM_NORMAL_HINTS for unknown client\n"); 00683 return false; 00684 } 00685 00686 xcb_size_hints_t size_hints; 00687 00688 //CLIENT_LOG(client); 00689 00690 /* If the hints were already in this event, use them, if not, request them */ 00691 if (reply != NULL) 00692 xcb_icccm_get_wm_size_hints_from_reply(&size_hints, reply); 00693 else 00694 xcb_icccm_get_wm_normal_hints_reply(conn, xcb_icccm_get_wm_normal_hints_unchecked(conn, con->window->id), &size_hints, NULL); 00695 00696 if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE)) { 00697 // TODO: Minimum size is not yet implemented 00698 DLOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height); 00699 } 00700 00701 bool changed = false; 00702 if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_RESIZE_INC)) { 00703 if (size_hints.width_inc > 0 && size_hints.width_inc < 0xFFFF) 00704 if (con->width_increment != size_hints.width_inc) { 00705 con->width_increment = size_hints.width_inc; 00706 changed = true; 00707 } 00708 if (size_hints.height_inc > 0 && size_hints.height_inc < 0xFFFF) 00709 if (con->height_increment != size_hints.height_inc) { 00710 con->height_increment = size_hints.height_inc; 00711 changed = true; 00712 } 00713 00714 if (changed) 00715 DLOG("resize increments changed\n"); 00716 } 00717 00718 int base_width = 0, base_height = 0; 00719 00720 /* base_width/height are the desired size of the window. 00721 We check if either the program-specified size or the program-specified 00722 min-size is available */ 00723 if (size_hints.flags & XCB_ICCCM_SIZE_HINT_BASE_SIZE) { 00724 base_width = size_hints.base_width; 00725 base_height = size_hints.base_height; 00726 } else if (size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE) { 00727 /* TODO: is this right? icccm says not */ 00728 base_width = size_hints.min_width; 00729 base_height = size_hints.min_height; 00730 } 00731 00732 if (base_width != con->base_width || 00733 base_height != con->base_height) { 00734 con->base_width = base_width; 00735 con->base_height = base_height; 00736 DLOG("client's base_height changed to %d\n", base_height); 00737 DLOG("client's base_width changed to %d\n", base_width); 00738 changed = true; 00739 } 00740 00741 /* If no aspect ratio was set or if it was invalid, we ignore the hints */ 00742 if (!(size_hints.flags & XCB_ICCCM_SIZE_HINT_P_ASPECT) || 00743 (size_hints.min_aspect_num <= 0) || 00744 (size_hints.min_aspect_den <= 0)) { 00745 goto render_and_return; 00746 } 00747 00748 /* XXX: do we really use rect here, not window_rect? */ 00749 double width = con->rect.width - base_width; 00750 double height = con->rect.height - base_height; 00751 /* Convert numerator/denominator to a double */ 00752 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den; 00753 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den; 00754 00755 DLOG("Aspect ratio set: minimum %f, maximum %f\n", min_aspect, max_aspect); 00756 DLOG("width = %f, height = %f\n", width, height); 00757 00758 /* Sanity checks, this is user-input, in a way */ 00759 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0) 00760 goto render_and_return; 00761 00762 /* Check if we need to set proportional_* variables using the correct ratio */ 00763 if ((width / height) < min_aspect) { 00764 if (con->proportional_width != width || 00765 con->proportional_height != (width / min_aspect)) { 00766 con->proportional_width = width; 00767 con->proportional_height = width / min_aspect; 00768 changed = true; 00769 } 00770 } else if ((width / height) > max_aspect) { 00771 if (con->proportional_width != width || 00772 con->proportional_height != (width / max_aspect)) { 00773 con->proportional_width = width; 00774 con->proportional_height = width / max_aspect; 00775 changed = true; 00776 } 00777 } else goto render_and_return; 00778 00779 render_and_return: 00780 if (changed) 00781 tree_render(); 00782 FREE(reply); 00783 return true; 00784 } 00785 00786 /* 00787 * Handles the WM_HINTS property for extracting the urgency state of the window. 00788 * 00789 */ 00790 static bool handle_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, 00791 xcb_atom_t name, xcb_get_property_reply_t *reply) { 00792 Con *con = con_by_window_id(window); 00793 if (con == NULL) { 00794 DLOG("Received WM_HINTS for unknown client\n"); 00795 return false; 00796 } 00797 00798 xcb_icccm_wm_hints_t hints; 00799 00800 if (reply != NULL) { 00801 if (!xcb_icccm_get_wm_hints_from_reply(&hints, reply)) 00802 return false; 00803 } else { 00804 if (!xcb_icccm_get_wm_hints_reply(conn, xcb_icccm_get_wm_hints_unchecked(conn, con->window->id), &hints, NULL)) 00805 return false; 00806 } 00807 00808 if (!con->urgent && focused == con) { 00809 DLOG("Ignoring urgency flag for current client\n"); 00810 FREE(reply); 00811 return true; 00812 } 00813 00814 /* Update the flag on the client directly */ 00815 con->urgent = (xcb_icccm_wm_hints_get_urgency(&hints) != 0); 00816 //CLIENT_LOG(con); 00817 LOG("Urgency flag changed to %d\n", con->urgent); 00818 00819 Con *ws; 00820 /* Set the urgency flag on the workspace, if a workspace could be found 00821 * (for dock clients, that is not the case). */ 00822 if ((ws = con_get_workspace(con)) != NULL) 00823 workspace_update_urgent_flag(ws); 00824 00825 tree_render(); 00826 00827 #if 0 00828 /* If the workspace this client is on is not visible, we need to redraw 00829 * the workspace bar */ 00830 if (!workspace_is_visible(client->workspace)) { 00831 Output *output = client->workspace->output; 00832 render_workspace(conn, output, output->current_workspace); 00833 xcb_flush(conn); 00834 } 00835 #endif 00836 00837 FREE(reply); 00838 return true; 00839 } 00840 00841 /* 00842 * Handles the transient for hints set by a window, signalizing that this window is a popup window 00843 * for some other window. 00844 * 00845 * See ICCCM 4.1.2.6 for more details 00846 * 00847 */ 00848 static bool handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, 00849 xcb_atom_t name, xcb_get_property_reply_t *prop) { 00850 Con *con; 00851 00852 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) { 00853 DLOG("No such window\n"); 00854 return false; 00855 } 00856 00857 if (prop == NULL) { 00858 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn, 00859 false, window, A_WM_TRANSIENT_FOR, A_WINDOW, 0, 32), NULL); 00860 if (prop == NULL) 00861 return false; 00862 } 00863 00864 window_update_transient_for(con->window, prop); 00865 00866 // TODO: put window in floating mode if con->window->transient_for != XCB_NONE: 00867 #if 0 00868 if (client->floating == FLOATING_AUTO_OFF) { 00869 DLOG("This is a popup window, putting into floating\n"); 00870 toggle_floating_mode(conn, client, true); 00871 } 00872 #endif 00873 00874 return true; 00875 } 00876 00877 /* 00878 * Handles changes of the WM_CLIENT_LEADER atom which specifies if this is a 00879 * toolwindow (or similar) and to which window it belongs (logical parent). 00880 * 00881 */ 00882 static bool handle_clientleader_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, 00883 xcb_atom_t name, xcb_get_property_reply_t *prop) { 00884 Con *con; 00885 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) 00886 return false; 00887 00888 if (prop == NULL) { 00889 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn, 00890 false, window, A_WM_CLIENT_LEADER, A_WINDOW, 0, 32), NULL); 00891 if (prop == NULL) 00892 return false; 00893 } 00894 00895 window_update_leader(con->window, prop); 00896 00897 return true; 00898 } 00899 00900 /* 00901 * Handles FocusIn events which are generated by clients (i3’s focus changes 00902 * don’t generate FocusIn events due to a different EventMask) and updates the 00903 * decorations accordingly. 00904 * 00905 */ 00906 static int handle_focus_in(xcb_focus_in_event_t *event) { 00907 DLOG("focus change in, for window 0x%08x\n", event->event); 00908 Con *con; 00909 if ((con = con_by_window_id(event->event)) == NULL || con->window == NULL) 00910 return 1; 00911 DLOG("That is con %p / %s\n", con, con->name); 00912 00913 if (event->mode == XCB_NOTIFY_MODE_GRAB || 00914 event->mode == XCB_NOTIFY_MODE_UNGRAB) { 00915 DLOG("FocusIn event for grab/ungrab, ignoring\n"); 00916 return 1; 00917 } 00918 00919 if (event->detail == XCB_NOTIFY_DETAIL_POINTER) { 00920 DLOG("notify detail is pointer, ignoring this event\n"); 00921 return 1; 00922 } 00923 00924 if (focused_id == event->event) { 00925 DLOG("focus matches the currently focused window, not doing anything\n"); 00926 return 1; 00927 } 00928 00929 DLOG("focus is different, updating decorations\n"); 00930 con_focus(con); 00931 /* We update focused_id because we don’t need to set focus again */ 00932 focused_id = event->event; 00933 x_push_changes(croot); 00934 return 1; 00935 } 00936 00937 /* Returns false if the event could not be processed (e.g. the window could not 00938 * be found), true otherwise */ 00939 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); 00940 00941 struct property_handler_t { 00942 xcb_atom_t atom; 00943 uint32_t long_len; 00944 cb_property_handler_t cb; 00945 }; 00946 00947 static struct property_handler_t property_handlers[] = { 00948 { 0, 128, handle_windowname_change }, 00949 { 0, UINT_MAX, handle_hints }, 00950 { 0, 128, handle_windowname_change_legacy }, 00951 { 0, UINT_MAX, handle_normal_hints }, 00952 { 0, UINT_MAX, handle_clientleader_change }, 00953 { 0, UINT_MAX, handle_transient_for } 00954 }; 00955 #define NUM_HANDLERS (sizeof(property_handlers) / sizeof(struct property_handler_t)) 00956 00957 /* 00958 * Sets the appropriate atoms for the property handlers after the atoms were 00959 * received from X11 00960 * 00961 */ 00962 void property_handlers_init() { 00963 property_handlers[0].atom = A__NET_WM_NAME; 00964 property_handlers[1].atom = A_WM_HINTS; 00965 property_handlers[2].atom = A_WM_NAME; 00966 property_handlers[3].atom = A_WM_NORMAL_HINTS; 00967 property_handlers[4].atom = A_WM_CLIENT_LEADER; 00968 property_handlers[5].atom = A_WM_TRANSIENT_FOR; 00969 } 00970 00971 static void property_notify(uint8_t state, xcb_window_t window, xcb_atom_t atom) { 00972 struct property_handler_t *handler = NULL; 00973 xcb_get_property_reply_t *propr = NULL; 00974 00975 for (int c = 0; c < sizeof(property_handlers) / sizeof(struct property_handler_t); c++) { 00976 if (property_handlers[c].atom != atom) 00977 continue; 00978 00979 handler = &property_handlers[c]; 00980 break; 00981 } 00982 00983 if (handler == NULL) { 00984 DLOG("Unhandled property notify for atom %d (0x%08x)\n", atom, atom); 00985 return; 00986 } 00987 00988 if (state != XCB_PROPERTY_DELETE) { 00989 xcb_get_property_cookie_t cookie = xcb_get_property(conn, 0, window, atom, XCB_GET_PROPERTY_TYPE_ANY, 0, handler->long_len); 00990 propr = xcb_get_property_reply(conn, cookie, 0); 00991 } 00992 00993 /* the handler will free() the reply unless it returns false */ 00994 if (!handler->cb(NULL, conn, state, window, atom, propr)) 00995 FREE(propr); 00996 } 00997 00998 /* 00999 * Takes an xcb_generic_event_t and calls the appropriate handler, based on the 01000 * event type. 01001 * 01002 */ 01003 void handle_event(int type, xcb_generic_event_t *event) { 01004 if (randr_base > -1 && 01005 type == randr_base + XCB_RANDR_SCREEN_CHANGE_NOTIFY) { 01006 handle_screen_change(event); 01007 return; 01008 } 01009 01010 switch (type) { 01011 case XCB_KEY_PRESS: 01012 handle_key_press((xcb_key_press_event_t*)event); 01013 break; 01014 01015 case XCB_BUTTON_PRESS: 01016 handle_button_press((xcb_button_press_event_t*)event); 01017 break; 01018 01019 case XCB_MAP_REQUEST: 01020 handle_map_request((xcb_map_request_event_t*)event); 01021 break; 01022 01023 case XCB_UNMAP_NOTIFY: 01024 handle_unmap_notify_event((xcb_unmap_notify_event_t*)event); 01025 break; 01026 01027 case XCB_DESTROY_NOTIFY: 01028 handle_destroy_notify_event((xcb_destroy_notify_event_t*)event); 01029 break; 01030 01031 case XCB_EXPOSE: 01032 handle_expose_event((xcb_expose_event_t*)event); 01033 break; 01034 01035 case XCB_MOTION_NOTIFY: 01036 handle_motion_notify((xcb_motion_notify_event_t*)event); 01037 break; 01038 01039 /* Enter window = user moved his mouse over the window */ 01040 case XCB_ENTER_NOTIFY: 01041 handle_enter_notify((xcb_enter_notify_event_t*)event); 01042 break; 01043 01044 /* Client message are sent to the root window. The only interesting 01045 * client message for us is _NET_WM_STATE, we honour 01046 * _NET_WM_STATE_FULLSCREEN */ 01047 case XCB_CLIENT_MESSAGE: 01048 handle_client_message((xcb_client_message_event_t*)event); 01049 break; 01050 01051 /* Configure request = window tried to change size on its own */ 01052 case XCB_CONFIGURE_REQUEST: 01053 handle_configure_request((xcb_configure_request_event_t*)event); 01054 break; 01055 01056 /* Mapping notify = keyboard mapping changed (Xmodmap), re-grab bindings */ 01057 case XCB_MAPPING_NOTIFY: 01058 handle_mapping_notify((xcb_mapping_notify_event_t*)event); 01059 break; 01060 01061 case XCB_FOCUS_IN: 01062 handle_focus_in((xcb_focus_in_event_t*)event); 01063 break; 01064 01065 case XCB_PROPERTY_NOTIFY: 01066 DLOG("Property notify\n"); 01067 xcb_property_notify_event_t *e = (xcb_property_notify_event_t*)event; 01068 property_notify(e->state, e->window, e->atom); 01069 break; 01070 01071 default: 01072 DLOG("Unhandled event of type %d\n", type); 01073 break; 01074 } 01075 }