4 * i3 - an improved dynamic tiling window manager
6 * © 2009 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
17 #include <xcb/xcb_wm.h>
18 #include <X11/XKBlib.h>
32 * Due to bindings like Mode_switch + <a>, we need to bind some keys in XCB_GRAB_MODE_SYNC.
33 * Therefore, we just replay all key presses.
36 int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) {
37 printf("got key release, just passing\n");
38 xcb_allow_events(conn, XCB_ALLOW_REPLAY_KEYBOARD, event->time);
44 * There was a key press. We compare this key code with our bindings table and pass
45 * the bound action to parse_command().
48 int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
49 printf("Keypress %d\n", event->detail);
51 /* We need to get the keysym group (There are group 1 to group 4, each holding
52 two keysyms (without shift and with shift) using Xkb because X fails to
53 provide them reliably (it works in Xephyr, it does not in real X) */
55 if (XkbGetState(xkbdpy, XkbUseCoreKbd, &state) == Success && (state.group+1) == 2)
58 printf("state %d\n", event->state);
60 /* Remove the numlock bit, all other bits are modifiers we can bind to */
61 uint16_t state_filtered = event->state & ~XCB_MOD_MASK_LOCK;
63 /* Find the binding */
65 TAILQ_FOREACH(bind, &bindings, bindings)
66 if (bind->keycode == event->detail && bind->mods == state_filtered)
69 /* No match? Then it was an actively grabbed key, that is with Mode_switch, and
70 the user did not press Mode_switch, so just pass it… */
71 if (bind == TAILQ_END(&bindings)) {
72 xcb_allow_events(conn, ReplayKeyboard, event->time);
77 parse_command(conn, bind->command);
78 if (event->state & 0x2) {
79 printf("Mode_switch -> allow_events(SyncKeyboard)\n");
80 xcb_allow_events(conn, SyncKeyboard, event->time);
88 * When the user moves the mouse pointer onto a window, this callback gets called.
91 int handle_enter_notify(void *ignored, xcb_connection_t *conn, xcb_enter_notify_event_t *event) {
92 printf("enter_notify for %08x\n", event->event);
94 /* This was either a focus for a client’s parent (= titlebar)… */
95 Client *client = table_get(byParent, event->event);
96 /* …or the client itself */
98 client = table_get(byChild, event->event);
100 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
101 if (client == NULL) {
102 printf("Getting screen at %d x %d\n", event->root_x, event->root_y);
103 i3Screen *screen = get_screen_containing(event->root_x, event->root_y);
104 if (screen == NULL) {
105 printf("ERROR: No such screen\n");
108 c_ws = &workspaces[screen->current_workspace];
109 printf("We're now on virtual screen number %d\n", screen->num);
113 /* When in stacking, enter notifications on the parent are ignored. Focus will be changed via keyboard only. */
114 if (client->container->mode == MODE_STACK &&
115 client == table_get(byParent, event->event))
118 set_focus(conn, client);
123 int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_event_t *event) {
124 printf("button press!\n");
125 /* This was either a focus for a client’s parent (= titlebar)… */
126 Client *client = table_get(byChild, event->event);
127 bool border_click = false;
128 if (client == NULL) {
129 client = table_get(byParent, event->event);
135 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
136 xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
138 /* Set focus in any case */
139 set_focus(conn, client);
141 /* Let’s see if this was on the borders (= resize). If not, we’re done */
142 printf("press button on x=%d, y=%d\n", event->event_x, event->event_y);
144 Container *con = client->container,
147 enum { O_HORIZONTAL, O_VERTICAL } orientation = O_VERTICAL;
150 printf("dock. done.\n");
151 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
156 printf("event->event_x = %d, client->rect.width = %d\n", event->event_x, client->rect.width);
159 printf("client. done.\n");
160 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
165 if (event->event_y < 2) {
166 /* This was a press on the top border */
169 first = con->workspace->table[con->col][con->row-1];
171 orientation = O_HORIZONTAL;
172 } else if (event->event_y >= (client->rect.height - 2)) {
174 if (con->row == (con->workspace->rows-1))
177 second = con->workspace->table[con->col][con->row+1];
178 orientation = O_HORIZONTAL;
179 } else if (event->event_x < 2) {
183 first = con->workspace->table[con->col-1][con->row];
185 } else if (event->event_x > 2) {
187 if (con->col == (con->workspace->cols-1))
190 second = con->workspace->table[con->col+1][con->row];
193 /* Open a new window, the resizebar. Grab the pointer and move the window around
194 as the user moves the pointer. */
195 Rect grabrect = {0, 0, root_screen->width_in_pixels, root_screen->height_in_pixels};
196 xcb_window_t grabwin = create_window(conn, grabrect, XCB_WINDOW_CLASS_INPUT_ONLY, 0, NULL);
199 if (orientation == O_VERTICAL) {
200 helprect.x = event->root_x;
203 helprect.height = root_screen->height_in_pixels; /* this has to be the cell’s height */
206 helprect.y = event->root_y;
207 helprect.width = root_screen->width_in_pixels; /* this has to be the cell’s width*/
210 xcb_window_t helpwin = create_window(conn, helprect, XCB_WINDOW_CLASS_INPUT_OUTPUT, 0, NULL);
212 uint32_t values[1] = {get_colorpixel(conn, NULL, helpwin, "#4c7899")};
213 xcb_void_cookie_t cookie = xcb_change_window_attributes_checked(conn, helpwin, XCB_CW_BACK_PIXEL, values);
214 check_error(conn, cookie, "Could not change window attributes (background color)");
216 xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
218 xcb_grab_pointer(conn, false, root, XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION,
219 XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, grabwin, XCB_NONE, XCB_CURRENT_TIME);
223 xcb_generic_event_t *inside_event;
224 /* I’ve always wanted to have my own eventhandler… */
225 while ((inside_event = xcb_wait_for_event(conn))) {
226 /* Same as get_event_handler in xcb */
227 int nr = inside_event->response_type;
229 /* An error occured */
230 handle_event(NULL, conn, inside_event);
235 nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
238 /* Check if we need to escape this loop */
239 if (nr == XCB_BUTTON_RELEASE)
243 case XCB_MOTION_NOTIFY:
244 if (orientation == O_VERTICAL) {
245 values[0] = ((xcb_motion_notify_event_t*)inside_event)->root_x;
246 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_X, values);
248 values[0] = ((xcb_motion_notify_event_t*)inside_event)->root_y;
249 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_Y, values);
255 /* Use original handler */
256 xcb_event_handle(&evenths, inside_event);
259 printf("Ignoring event of type %d\n", nr);
265 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
266 xcb_destroy_window(conn, helpwin);
267 xcb_destroy_window(conn, grabwin);
270 Workspace *ws = con->workspace;
271 if (orientation == O_VERTICAL) {
272 printf("Resize was from X = %d to X = %d\n", event->root_x, values[0]);
274 /* Convert 0 (for default width_factor) to actual numbers */
275 if (first->width_factor == 0)
276 first->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
277 if (second->width_factor == 0)
278 second->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
280 first->width_factor *= (float)(first->width + (values[0] - event->root_x)) / first->width;
281 second->width_factor *= (float)(second->width - (values[0] - event->root_x)) / second->width;
283 printf("Resize was from Y = %d to Y = %d\n", event->root_y, values[0]);
285 /* Convert 0 (for default height_factor) to actual numbers */
286 if (first->height_factor == 0)
287 first->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
288 if (second->height_factor == 0)
289 second->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
291 first->height_factor *= (float)(first->height + (values[0] - event->root_y)) / first->height;
292 second->height_factor *= (float)(second->height - (values[0] - event->root_y)) / second->height;
301 * A new window appeared on the screen (=was mapped), so let’s manage it.
304 int handle_map_notify_event(void *prophs, xcb_connection_t *conn, xcb_map_notify_event_t *event) {
305 window_attributes_t wa = { TAG_VALUE };
306 wa.u.override_redirect = event->override_redirect;
307 printf("MapNotify for 0x%08x.\n", event->window);
308 manage_window(prophs, conn, event->window, wa);
313 * Our window decorations were unmapped. That means, the window will be killed now,
314 * so we better clean up before.
317 int handle_unmap_notify_event(void *data, xcb_connection_t *c, xcb_unmap_notify_event_t *e) {
318 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(c)).data->root;
320 Client *client = table_get(byChild, e->window);
321 /* First, we need to check if the client is awaiting an unmap-request which
322 was generated by us reparenting the window. In that case, we just ignore it. */
323 if (client != NULL && client->awaiting_useless_unmap) {
324 printf("Dropping this unmap request, it was generated by reparenting\n");
325 client->awaiting_useless_unmap = false;
328 client = table_remove(byChild, e->window);
330 printf("UnmapNotify for 0x%08x (received from 0x%08x): ", e->window, e->event);
331 if (client == NULL) {
332 printf("not a managed window. Ignoring.\n");
336 if (client->container != NULL) {
337 Client *to_focus = CIRCLEQ_NEXT_OR_NULL(&(client->container->clients), client, clients);
338 if (to_focus == NULL)
339 to_focus = CIRCLEQ_PREV_OR_NULL(&(client->container->clients), client, clients);
341 /* Set focus in data structure to the next/previous window, if any (else NULL) */
342 if (client->container->currently_focused == client)
343 client->container->currently_focused = to_focus;
345 /* If this was the fullscreen client, we need to unset it */
346 if (client->container->workspace->fullscreen_client == client)
347 client->container->workspace->fullscreen_client = NULL;
349 /* Remove the client from the list of clients */
350 CIRCLEQ_REMOVE(&(client->container->clients), client, clients);
352 /* Actually set focus, if there is a window which should get it */
353 if (to_focus != NULL)
354 set_focus(c, to_focus);
357 printf("child of 0x%08x.\n", client->frame);
358 xcb_reparent_window(c, client->child, root, 0, 0);
359 xcb_destroy_window(c, client->frame);
361 table_remove(byParent, client->frame);
363 cleanup_table(c, client->container->workspace);
373 * Called when a window changes its title
376 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
377 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
378 printf("window's name changed.\n");
379 Client *client = table_get(byChild, window);
383 client->name_len = xcb_get_property_value_length(prop);
384 client->name = malloc(client->name_len);
385 strncpy(client->name, xcb_get_property_value(prop), client->name_len);
386 printf("rename to \"%.*s\".\n", client->name_len, client->name);
388 decorate_window(conn, client, client->frame, client->titlegc, 0);
395 * Expose event means we should redraw our windows (= title bar)
398 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *e) {
399 printf("got expose_event\n");
400 /* e->count is the number of minimum remaining expose events for this window, so we
401 skip all events but the last one */
405 Client *client = table_get(byParent, e->window);
406 if (client == NULL) {
407 /* There was no client in the table, so this is probably an expose event for
408 one of our stack_windows. */
409 struct Stack_Window *stack_win;
410 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
411 if (stack_win->window == e->window) {
412 render_container(conn, stack_win->container);
418 printf("handle_expose_event()\n");
419 if (client->container->mode != MODE_STACK)
420 decorate_window(conn, client, client->frame, client->titlegc, 0);
425 * Handle client messages (EWMH)
428 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
429 printf("client_message\n");
431 if (event->type == atoms[_NET_WM_STATE]) {
432 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
435 printf("fullscreen\n");
437 Client *client = table_get(byChild, event->window);
441 /* Check if the fullscreen state should be toggled */
442 if ((client->fullscreen &&
443 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
444 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
445 (!client->fullscreen &&
446 (event->data.data32[0] == _NET_WM_STATE_ADD ||
447 event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
448 toggle_fullscreen(conn, client);
450 printf("unhandled clientmessage\n");
457 int window_type_handler(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
458 xcb_atom_t atom, xcb_get_property_reply_t *property) {
459 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
460 before changing this property. */
461 printf("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");