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 are ignored. Focus will be changed via keyboard only. */
114 if (client->container->mode == MODE_STACK)
117 set_focus(conn, client);
122 int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_event_t *event) {
123 printf("button press!\n");
124 /* This was either a focus for a client’s parent (= titlebar)… */
125 Client *client = table_get(byChild, event->event);
126 bool border_click = false;
127 if (client == NULL) {
128 client = table_get(byParent, event->event);
134 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
135 xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
137 /* Set focus in any case */
138 set_focus(conn, client);
140 /* Let’s see if this was on the borders (= resize). If not, we’re done */
141 printf("press button on x=%d, y=%d\n", event->event_x, event->event_y);
143 Container *con = client->container,
146 enum { O_HORIZONTAL, O_VERTICAL } orientation = O_VERTICAL;
149 printf("dock. done.\n");
153 printf("event->event_x = %d, client->rect.width = %d\n", event->event_x, client->rect.width);
156 printf("client. done.\n");
160 if (event->event_y < 2) {
161 /* This was a press on the top border */
164 first = con->workspace->table[con->col][con->row-1];
166 orientation = O_HORIZONTAL;
167 } else if (event->event_y >= (client->rect.height - 2)) {
169 if (con->row == (con->workspace->rows-1))
172 second = con->workspace->table[con->col][con->row+1];
173 orientation = O_HORIZONTAL;
174 } else if (event->event_x < 2) {
178 first = con->workspace->table[con->col-1][con->row];
180 } else if (event->event_x > 2) {
182 if (con->col == (con->workspace->cols-1))
185 second = con->workspace->table[con->col+1][con->row];
188 /* Open a new window, the resizebar. Grab the pointer and move the window around
189 as the user moves the pointer. */
190 Rect grabrect = {0, 0, root_screen->width_in_pixels, root_screen->height_in_pixels};
191 xcb_window_t grabwin = create_window(conn, grabrect, XCB_WINDOW_CLASS_INPUT_ONLY, 0, NULL);
194 if (orientation == O_VERTICAL) {
195 helprect.x = event->root_x;
198 helprect.height = root_screen->height_in_pixels; /* this has to be the cell’s height */
201 helprect.y = event->root_y;
202 helprect.width = root_screen->width_in_pixels; /* this has to be the cell’s width*/
205 xcb_window_t helpwin = create_window(conn, helprect, XCB_WINDOW_CLASS_INPUT_OUTPUT, 0, NULL);
207 uint32_t values[1] = {get_colorpixel(conn, NULL, helpwin, "#4c7899")};
208 xcb_void_cookie_t cookie = xcb_change_window_attributes_checked(conn, helpwin, XCB_CW_BACK_PIXEL, values);
209 check_error(conn, cookie, "Could not change window attributes (background color)");
211 xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
213 xcb_grab_pointer(conn, false, root, XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION,
214 XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, grabwin, XCB_NONE, XCB_CURRENT_TIME);
218 xcb_generic_event_t *inside_event;
219 /* I’ve always wanted to have my own eventhandler… */
220 while ((inside_event = xcb_wait_for_event(conn))) {
221 /* Same as get_event_handler in xcb */
222 int nr = inside_event->response_type;
224 /* An error occured */
225 handle_event(NULL, conn, inside_event);
230 nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
233 /* Check if we need to escape this loop */
234 if (nr == XCB_BUTTON_RELEASE)
238 case XCB_MOTION_NOTIFY:
239 if (orientation == O_VERTICAL) {
240 values[0] = ((xcb_motion_notify_event_t*)inside_event)->root_x;
241 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_X, values);
243 values[0] = ((xcb_motion_notify_event_t*)inside_event)->root_y;
244 xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_Y, values);
250 /* Use original handler */
251 xcb_event_handle(&evenths, inside_event);
254 printf("Ignoring event of type %d\n", nr);
260 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
261 xcb_destroy_window(conn, helpwin);
262 xcb_destroy_window(conn, grabwin);
265 Workspace *ws = con->workspace;
266 if (orientation == O_VERTICAL) {
267 printf("Resize was from X = %d to X = %d\n", event->root_x, values[0]);
269 /* Convert 0 (for default width_factor) to actual numbers */
270 if (first->width_factor == 0)
271 first->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
272 if (second->width_factor == 0)
273 second->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
275 first->width_factor *= (float)(first->width + (values[0] - event->root_x)) / first->width;
276 second->width_factor *= (float)(second->width - (values[0] - event->root_x)) / second->width;
278 printf("Resize was from Y = %d to Y = %d\n", event->root_y, values[0]);
280 /* Convert 0 (for default height_factor) to actual numbers */
281 if (first->height_factor == 0)
282 first->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
283 if (second->height_factor == 0)
284 second->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
286 first->height_factor *= (float)(first->height + (values[0] - event->root_y)) / first->height;
287 second->height_factor *= (float)(second->height - (values[0] - event->root_y)) / second->height;
296 * A new window appeared on the screen (=was mapped), so let’s manage it.
299 int handle_map_notify_event(void *prophs, xcb_connection_t *conn, xcb_map_notify_event_t *event) {
300 window_attributes_t wa = { TAG_VALUE };
301 wa.u.override_redirect = event->override_redirect;
302 printf("MapNotify for 0x%08x.\n", event->window);
303 manage_window(prophs, conn, event->window, wa);
308 * Our window decorations were unmapped. That means, the window will be killed now,
309 * so we better clean up before.
312 int handle_unmap_notify_event(void *data, xcb_connection_t *c, xcb_unmap_notify_event_t *e) {
313 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(c)).data->root;
315 Client *client = table_get(byChild, e->window);
316 /* First, we need to check if the client is awaiting an unmap-request which
317 was generated by us reparenting the window. In that case, we just ignore it. */
318 if (client != NULL && client->awaiting_useless_unmap) {
319 printf("Dropping this unmap request, it was generated by reparenting\n");
320 client->awaiting_useless_unmap = false;
323 client = table_remove(byChild, e->window);
325 printf("UnmapNotify for 0x%08x (received from 0x%08x): ", e->window, e->event);
326 if (client == NULL) {
327 printf("not a managed window. Ignoring.\n");
331 if (client->container != NULL) {
332 if (client->container->currently_focused == client)
333 client->container->currently_focused = NULL;
334 CIRCLEQ_REMOVE(&(client->container->clients), client, clients);
337 printf("child of 0x%08x.\n", client->frame);
338 xcb_reparent_window(c, client->child, root, 0, 0);
339 xcb_destroy_window(c, client->frame);
341 table_remove(byParent, client->frame);
350 * Called when a window changes its title
353 int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
354 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
355 printf("window's name changed.\n");
356 Client *client = table_get(byChild, window);
360 client->name_len = xcb_get_property_value_length(prop);
361 client->name = malloc(client->name_len);
362 strncpy(client->name, xcb_get_property_value(prop), client->name_len);
363 printf("rename to \"%.*s\".\n", client->name_len, client->name);
365 decorate_window(conn, client, client->frame, client->titlegc, 0);
372 * Expose event means we should redraw our windows (= title bar)
375 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *e) {
376 printf("got expose_event\n");
377 /* e->count is the number of minimum remaining expose events for this window, so we
378 skip all events but the last one */
382 Client *client = table_get(byParent, e->window);
383 if (client == NULL) {
384 /* There was no client in the table, so this is probably an expose event for
385 one of our stack_windows. */
386 struct Stack_Window *stack_win;
387 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
388 if (stack_win->window == e->window) {
389 render_container(conn, stack_win->container);
395 printf("handle_expose_event()\n");
396 if (client->container->mode != MODE_STACK)
397 decorate_window(conn, client, client->frame, client->titlegc, 0);
402 * Handle client messages (EWMH)
405 int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
406 printf("client_message\n");
408 if (event->type == atoms[_NET_WM_STATE]) {
409 if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
412 printf("fullscreen\n");
414 Client *client = table_get(byChild, event->window);
418 /* Check if the fullscreen state should be toggled */
419 if ((client->fullscreen &&
420 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
421 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
422 (!client->fullscreen &&
423 (event->data.data32[0] == _NET_WM_STATE_ADD ||
424 event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
425 toggle_fullscreen(conn, client);
427 printf("unhandled clientmessage\n");
434 int window_type_handler(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
435 xcb_atom_t atom, xcb_get_property_reply_t *property) {
436 /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
437 before changing this property. */
438 printf("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");