4 * i3 - an improved dynamic tiling window manager
6 * (c) 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);
132 client = table_get(byParent, event->event);
136 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
137 xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
139 /* Set focus in any case */
140 set_focus(conn, client);
142 /* Let’s see if this was on the borders (= resize). If not, we’re done */
143 i3Font *font = load_font(conn, pattern);
144 printf("press button on x=%d, y=%d\n", event->event_x, event->event_y);
145 if (event->event_y <= (font->height + 2))
148 printf("that was resize\n");
150 /* Open a new window, the resizebar. Grab the pointer and move the window around
151 as the user moves the pointer. */
154 /* TODO: the whole logic is missing. this is just a proof of concept */
155 xcb_window_t grabwin = xcb_generate_id(conn);
160 xcb_create_window(conn,
166 root_screen->width_in_pixels, /* width */
167 root_screen->height_in_pixels, /* height */
168 /* border_width */ 0,
169 XCB_WINDOW_CLASS_INPUT_ONLY,
170 root_screen->root_visual,
174 /* Map the window on the screen (= make it visible) */
175 xcb_map_window(conn, grabwin);
177 xcb_window_t helpwin = xcb_generate_id(conn);
179 mask = XCB_CW_BACK_PIXEL;
180 values[0] = root_screen->white_pixel;
181 xcb_create_window(conn, root_screen->root_depth, helpwin, root,
185 root_screen->height_in_pixels,
187 XCB_WINDOW_CLASS_INPUT_OUTPUT,
188 root_screen->root_visual,
192 xcb_map_window(conn, helpwin);
193 xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
195 xcb_grab_pointer(conn, false, root, XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION,
196 XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, grabwin, XCB_NONE, XCB_CURRENT_TIME);
200 xcb_generic_event_t *inside_event;
201 /* I’ve always wanted to have my own eventhandler… */
202 while ((inside_event = xcb_wait_for_event(conn))) {
203 /* Same as get_event_handler in xcb */
204 int nr = inside_event->response_type;
206 handle_event(NULL, conn, inside_event);
210 nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
213 /* Check if we need to escape this loop… */
214 if (nr == XCB_BUTTON_RELEASE)
218 case XCB_MOTION_NOTIFY:
219 values[0] = ((xcb_motion_notify_event_t*)inside_event)->root_x;
220 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_X, values);
224 /* Use original handler */
225 xcb_event_handle(&evenths, inside_event);
228 printf("Ignoring event of type %d\n", nr);
235 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
236 xcb_destroy_window(conn, helpwin);
237 xcb_destroy_window(conn, grabwin);
243 int handle_map_notify_event(void *prophs, xcb_connection_t *conn, xcb_map_notify_event_t *event) {
244 window_attributes_t wa = { TAG_VALUE };
245 wa.u.override_redirect = event->override_redirect;
246 printf("MapNotify for 0x%08x.\n", event->window);
247 manage_window(prophs, conn, event->window, wa);
252 * Our window decorations were unmapped. That means, the window will be killed now,
253 * so we better clean up before.
256 int handle_unmap_notify_event(void *data, xcb_connection_t *c, xcb_unmap_notify_event_t *e) {
257 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(c)).data->root;
259 Client *client = table_get(byChild, e->window);
260 /* First, we need to check if the client is awaiting an unmap-request which
261 was generated by us reparenting the window. In that case, we just ignore it. */
262 if (client != NULL && client->awaiting_useless_unmap) {
263 printf("Dropping this unmap request, it was generated by reparenting\n");
264 client->awaiting_useless_unmap = false;
267 client = table_remove(byChild, e->window);
269 printf("UnmapNotify for 0x%08x (received from 0x%08x): ", e->window, e->event);
271 printf("not a managed window. Ignoring.\n");
276 if (client->container->currently_focused == client)
277 client->container->currently_focused = NULL;
278 CIRCLEQ_REMOVE(&(client->container->clients), client, clients);
280 printf("child of 0x%08x.\n", client->frame);
281 xcb_reparent_window(c, client->child, root, 0, 0);
282 xcb_destroy_window(c, client->frame);
284 table_remove(byParent, client->frame);
293 * Called when a window changes its title
296 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
297 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
298 printf("window's name changed.\n");
299 Client *client = table_get(byChild, window);
303 client->name_len = xcb_get_property_value_length(prop);
304 client->name = malloc(client->name_len);
305 strncpy(client->name, xcb_get_property_value(prop), client->name_len);
306 printf("rename to \"%.*s\".\n", client->name_len, client->name);
308 decorate_window(conn, client);
315 * Expose event means we should redraw our windows (= title bar)
318 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *e) {
319 printf("handle_expose_event()\n");
320 Client *client = table_get(byParent, e->window);
321 if(!client || e->count != 0)
323 decorate_window(conn, client);
328 * Handle client messages (EWMH)
331 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
332 printf("client_message\n");
334 if (event->type == atoms[_NET_WM_STATE]) {
335 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
338 printf("fullscreen\n");
340 Client *client = table_get(byChild, event->window);
344 /* Check if the fullscreen state should be toggled… */
345 if ((client->fullscreen &&
346 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
347 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
348 (!client->fullscreen &&
349 (event->data.data32[0] == _NET_WM_STATE_ADD ||
350 event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
351 toggle_fullscreen(conn, client);
353 printf("unhandled clientmessage\n");