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 lookup the key symbol and see if there are any bindings
45 * on that. This allows to do things like binding special characters (think of ä) to
46 * functions to get one more modifier while not losing AltGr :-)
47 * TODO: this description needs to be more understandable
50 int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
51 printf("Keypress %d\n", event->detail);
53 /* We need to get the keysym group (There are group 1 to group 4, each holding
54 two keysyms (without shift and with shift) using Xkb because X fails to
55 provide them reliably (it works in Xephyr, it does not in real X) */
57 if (XkbGetState(xkbdpy, XkbUseCoreKbd, &state) == Success && (state.group+1) == 2)
60 printf("state %d\n", event->state);
62 /* Find the binding */
63 /* TODO: event->state durch eine bitmask filtern und dann direkt vergleichen */
64 Binding *bind, *best_match = TAILQ_END(&bindings);
65 TAILQ_FOREACH(bind, &bindings, bindings) {
66 if (bind->keycode == event->detail &&
67 (bind->mods & event->state) == bind->mods) {
68 if (best_match == TAILQ_END(&bindings) ||
69 bind->mods > best_match->mods)
74 /* No match? Then it was an actively grabbed key, that is with Mode_switch, and
75 the user did not press Mode_switch, so just pass it… */
76 if (best_match == TAILQ_END(&bindings)) {
77 xcb_allow_events(conn, ReplayKeyboard, event->time);
82 if (event->state & 0x2) {
83 printf("that's mode_switch\n");
84 parse_command(conn, best_match->command);
85 printf("ok, hiding this event.\n");
86 xcb_allow_events(conn, SyncKeyboard, event->time);
91 parse_command(conn, best_match->command);
97 * When the user moves the mouse pointer onto a window, this callback gets called.
100 int handle_enter_notify(void *ignored, xcb_connection_t *conn, xcb_enter_notify_event_t *event) {
101 printf("enter_notify\n");
103 /* This was either a focus for a client’s parent (= titlebar)… */
104 Client *client = table_get(byParent, event->event);
105 /* …or the client itself */
107 client = table_get(byChild, event->event);
109 /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
110 if (client == NULL) {
111 printf("Getting screen at %d x %d\n", event->root_x, event->root_y);
112 i3Screen *screen = get_screen_containing(event->root_x, event->root_y);
113 if (screen == NULL) {
114 printf("ERROR: No such screen\n");
117 c_ws = &workspaces[screen->current_workspace];
118 printf("We're now on virtual screen number %d\n", screen->num);
122 set_focus(conn, client);
127 int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_event_t *event) {
128 printf("button press!\n");
129 /* This was either a focus for a client’s parent (= titlebar)… */
130 Client *client = table_get(byChild, event->event);
131 bool border_click = false;
132 if (client == NULL) {
133 client = table_get(byParent, event->event);
139 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
140 xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
142 /* Set focus in any case */
143 set_focus(conn, client);
145 /* Let’s see if this was on the borders (= resize). If not, we’re done */
146 printf("press button on x=%d, y=%d\n", event->event_x, event->event_y);
148 Container *con = client->container,
152 printf("event->event_x = %d, client->rect.width = %d\n", event->event_x, client->rect.width);
155 printf("client. done.\n");
159 if (event->event_y < 2) {
160 /* This was a press on the top border */
163 return 0; /* TODO: impl */
164 //neighbor_con = this_con->workspace->table[this_con->col][this_con->row-1];
165 } else if (event->event_y >= (client->rect.height - 2)) {
167 if (con->row == (con->workspace->rows-1))
169 return 0; /* TODO; impl */
170 //neighbor_con = this_con->workspace->table[this_con->col][this_con->row+1];
171 } else if (event->event_x < 2) {
175 first = con->workspace->table[con->col-1][con->row];
177 } else if (event->event_x > 2) {
179 if (con->col == (con->workspace->cols-1))
182 second = con->workspace->table[con->col+1][con->row];
185 /* Open a new window, the resizebar. Grab the pointer and move the window around
186 as the user moves the pointer. */
187 Rect grabrect = {0, 0, root_screen->width_in_pixels, root_screen->height_in_pixels};
188 xcb_window_t grabwin = create_window(conn, grabrect, XCB_WINDOW_CLASS_INPUT_ONLY, 0, NULL);
190 Rect helprect = {event->root_x, 0, 2, root_screen->height_in_pixels /* this has to be the cell’s height */};
191 xcb_window_t helpwin = create_window(conn, helprect, XCB_WINDOW_CLASS_INPUT_OUTPUT, 0, NULL);
193 uint32_t values[1] = {get_colorpixel(conn, helpwin, "#4c7899")};
194 xcb_void_cookie_t cookie = xcb_change_window_attributes_checked(conn, helpwin, XCB_CW_BACK_PIXEL, values);
195 check_error(conn, cookie, "Could not change window attributes (background color)");
197 xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
199 xcb_grab_pointer(conn, false, root, XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION,
200 XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, grabwin, XCB_NONE, XCB_CURRENT_TIME);
204 xcb_generic_event_t *inside_event;
205 /* I’ve always wanted to have my own eventhandler… */
206 while ((inside_event = xcb_wait_for_event(conn))) {
207 /* Same as get_event_handler in xcb */
208 int nr = inside_event->response_type;
210 /* An error occured */
211 handle_event(NULL, conn, inside_event);
216 nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
219 /* Check if we need to escape this loop… */
220 if (nr == XCB_BUTTON_RELEASE)
224 case XCB_MOTION_NOTIFY:
225 values[0] = ((xcb_motion_notify_event_t*)inside_event)->root_x;
226 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_X, values);
230 /* Use original handler */
231 xcb_event_handle(&evenths, inside_event);
234 printf("Ignoring event of type %d\n", nr);
241 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
242 xcb_destroy_window(conn, helpwin);
243 xcb_destroy_window(conn, grabwin);
246 Workspace *ws = con->workspace;
248 printf("Resize was from X = %d to X = %d\n", event->root_x, values[0]);
250 /* Convert 0 (for default width_factor) to actual numbers */
251 if (first->width_factor == 0)
252 first->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
253 if (second->width_factor == 0)
254 second->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
256 first->width_factor *= (float)(first->width + (values[0] - event->root_x)) / first->width;
257 second->width_factor *= (float)(second->width - (values[0] - event->root_x)) / second->width;
264 int handle_map_notify_event(void *prophs, xcb_connection_t *conn, xcb_map_notify_event_t *event) {
265 window_attributes_t wa = { TAG_VALUE };
266 wa.u.override_redirect = event->override_redirect;
267 printf("MapNotify for 0x%08x.\n", event->window);
268 manage_window(prophs, conn, event->window, wa);
273 * Our window decorations were unmapped. That means, the window will be killed now,
274 * so we better clean up before.
277 int handle_unmap_notify_event(void *data, xcb_connection_t *c, xcb_unmap_notify_event_t *e) {
278 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(c)).data->root;
280 Client *client = table_get(byChild, e->window);
281 /* First, we need to check if the client is awaiting an unmap-request which
282 was generated by us reparenting the window. In that case, we just ignore it. */
283 if (client != NULL && client->awaiting_useless_unmap) {
284 printf("Dropping this unmap request, it was generated by reparenting\n");
285 client->awaiting_useless_unmap = false;
288 client = table_remove(byChild, e->window);
290 printf("UnmapNotify for 0x%08x (received from 0x%08x): ", e->window, e->event);
292 printf("not a managed window. Ignoring.\n");
297 if (client->container->currently_focused == client)
298 client->container->currently_focused = NULL;
299 CIRCLEQ_REMOVE(&(client->container->clients), client, clients);
301 printf("child of 0x%08x.\n", client->frame);
302 xcb_reparent_window(c, client->child, root, 0, 0);
303 xcb_destroy_window(c, client->frame);
305 table_remove(byParent, client->frame);
314 * Called when a window changes its title
317 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
318 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
319 printf("window's name changed.\n");
320 Client *client = table_get(byChild, window);
324 client->name_len = xcb_get_property_value_length(prop);
325 client->name = malloc(client->name_len);
326 strncpy(client->name, xcb_get_property_value(prop), client->name_len);
327 printf("rename to \"%.*s\".\n", client->name_len, client->name);
329 decorate_window(conn, client);
336 * Expose event means we should redraw our windows (= title bar)
339 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *e) {
340 Client *client = table_get(byParent, e->window);
341 if(!client || e->count != 0)
343 printf("handle_expose_event()\n");
344 decorate_window(conn, client);
349 * Handle client messages (EWMH)
352 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
353 printf("client_message\n");
355 if (event->type == atoms[_NET_WM_STATE]) {
356 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
359 printf("fullscreen\n");
361 Client *client = table_get(byChild, event->window);
365 /* Check if the fullscreen state should be toggled… */
366 if ((client->fullscreen &&
367 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
368 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
369 (!client->fullscreen &&
370 (event->data.data32[0] == _NET_WM_STATE_ADD ||
371 event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
372 toggle_fullscreen(conn, client);
374 printf("unhandled clientmessage\n");
381 int window_type_handler(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
382 xcb_atom_t atom, xcb_get_property_reply_t *property) {
383 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
384 before changing this property. */
385 printf("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");