4 * i3 - an improved dynamic tiling window manager
6 * © 2009 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
15 #include <sys/types.h>
23 #include <X11/XKBlib.h>
24 #include <X11/extensions/XKB.h>
26 #include <xcb/xcb_wm.h>
27 #include <xcb/xcb_aux.h>
28 #include <xcb/xcb_event.h>
29 #include <xcb/xcb_property.h>
30 #include <xcb/xcb_keysyms.h>
31 #include <xcb/xcb_icccm.h>
32 #include <xcb/xinerama.h>
45 #define TERMINAL "/usr/pkg/bin/urxvt"
49 TAILQ_HEAD(bindings_head, Binding) bindings = TAILQ_HEAD_INITIALIZER(bindings);
50 xcb_event_handlers_t evenths;
52 xcb_window_t root_win;
56 char *pattern = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso8859-1";
61 * TODO: what exactly does this, what happens if we leave stuff out?
64 void manage_window(xcb_property_handlers_t *prophs, xcb_connection_t *c, xcb_window_t window, window_attributes_t wa)
66 printf("managing window.\n");
67 xcb_drawable_t d = { window };
68 xcb_get_geometry_cookie_t geomc;
69 xcb_get_geometry_reply_t *geom;
70 xcb_get_window_attributes_reply_t *attr = 0;
71 if(wa.tag == TAG_COOKIE)
73 attr = xcb_get_window_attributes_reply(c, wa.u.cookie, 0);
76 if(attr->map_state != XCB_MAP_STATE_VIEWABLE)
78 printf("Window 0x%08x is not mapped. Ignoring.\n", window);
83 wa.u.override_redirect = attr->override_redirect;
85 if(!wa.u.override_redirect && table_get(byChild, window))
87 printf("Window 0x%08x already managed. Ignoring.\n", window);
91 if(wa.u.override_redirect)
93 printf("Window 0x%08x has override-redirect set. Ignoring.\n", window);
97 geomc = xcb_get_geometry(c, d);
101 wa.u.cookie = xcb_get_window_attributes(c, window);
102 attr = xcb_get_window_attributes_reply(c, wa.u.cookie, 0);
104 geom = xcb_get_geometry_reply(c, geomc, 0);
107 reparent_window(c, window, attr->visual, geom->root, geom->depth, geom->x, geom->y, geom->width, geom->height);
108 xcb_property_changed(prophs, XCB_PROPERTY_NEW_VALUE, window, WM_NAME);
115 * reparent_window() gets called when a new window was opened and becomes a child of the root
116 * window, or it gets called by us when we manage the already existing windows at startup.
118 * Essentially, this is the point, where we take over control.
121 void reparent_window(xcb_connection_t *conn, xcb_window_t child,
122 xcb_visualid_t visual, xcb_window_t root, uint8_t depth,
123 int16_t x, int16_t y, uint16_t width, uint16_t height) {
125 Client *new = table_get(byChild, child);
127 /* TODO: When does this happen for existing clients? Is that a bug? */
128 printf("oh, it's new\n");
129 new = calloc(sizeof(Client), 1);
130 /* We initialize x and y with the invalid coordinates -1 so that they will
131 get updated at the next render_layout() at any case */
138 /* Insert into the currently active container */
139 CIRCLEQ_INSERT_TAIL(&(CUR_CELL->clients), new, clients);
141 /* Update the data structures */
142 CUR_CELL->currently_focused = new;
143 new->container = CUR_CELL;
145 new->frame = xcb_generate_id(conn);
147 new->rect.width = width;
148 new->rect.height = height;
150 /* Don’t generate events for our new window, it should *not* be managed */
151 mask |= XCB_CW_OVERRIDE_REDIRECT;
154 /* We want to know when… */
155 mask |= XCB_CW_EVENT_MASK;
156 values[1] = XCB_EVENT_MASK_BUTTON_PRESS | /* …mouse is pressed/released */
157 XCB_EVENT_MASK_BUTTON_RELEASE |
158 XCB_EVENT_MASK_EXPOSURE | /* …our window needs to be redrawn */
159 XCB_EVENT_MASK_ENTER_WINDOW; /* …user moves cursor inside our window */
161 printf("Reparenting 0x%08x under 0x%08x.\n", child, new->frame);
163 i3Font *font = load_font(conn, pattern);
164 width = min(width, c_ws->rect.x + c_ws->rect.width);
165 height = min(height, c_ws->rect.y + c_ws->rect.height);
167 Rect framerect = {x, y,
168 width + 2 + 2, /* 2 px border at each side */
169 height + 2 + 2 + font->height}; /* 2 px border plus font’s height */
171 /* Yo dawg, I heard you like windows, so I create a window around your window… */
172 new->frame = create_window(conn, framerect, XCB_WINDOW_CLASS_INPUT_OUTPUT, mask, values);
175 xcb_change_save_set(conn, XCB_SET_MODE_INSERT, child);
177 /* Generate a graphics context for the titlebar */
178 new->titlegc = xcb_generate_id(conn);
179 xcb_create_gc(conn, new->titlegc, new->frame, 0, 0);
181 /* Put our data structure (Client) into the table */
182 table_put(byParent, new->frame, new);
183 table_put(byChild, child, new);
185 /* Moves the original window into the new frame we've created for it */
186 new->awaiting_useless_unmap = true;
187 xcb_void_cookie_t cookie = xcb_reparent_window_checked(conn, child, new->frame, 0, font->height);
188 check_error(conn, cookie, "Could not reparent window");
190 /* We are interested in property changes */
191 mask = XCB_CW_EVENT_MASK;
192 values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE |
193 XCB_EVENT_MASK_STRUCTURE_NOTIFY |
194 XCB_EVENT_MASK_ENTER_WINDOW;
195 cookie = xcb_change_window_attributes_checked(conn, child, mask, values);
196 check_error(conn, cookie, "Could not change window attributes");
198 /* We need to grab the mouse buttons for click to focus */
199 xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
200 XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
201 1 /* left mouse button */,
202 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
204 /* Focus the new window */
205 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, new->child, XCB_CURRENT_TIME);
210 void manage_existing_windows(xcb_connection_t *c, xcb_property_handlers_t *prophs, xcb_window_t root) {
211 xcb_query_tree_cookie_t wintree;
212 xcb_query_tree_reply_t *rep;
214 xcb_window_t *children;
215 xcb_get_window_attributes_cookie_t *cookies;
217 wintree = xcb_query_tree(c, root);
218 rep = xcb_query_tree_reply(c, wintree, 0);
221 len = xcb_query_tree_children_length(rep);
222 cookies = malloc(len * sizeof(*cookies));
228 children = xcb_query_tree_children(rep);
229 for(i = 0; i < len; ++i)
230 cookies[i] = xcb_get_window_attributes(c, children[i]);
231 for(i = 0; i < len; ++i)
233 window_attributes_t wa = { TAG_COOKIE, { cookies[i] } };
234 manage_window(prophs, c, children[i], wa);
239 int main(int argc, char *argv[], char *env[]) {
242 xcb_property_handlers_t prophs;
245 /* Initialize the table data structures for each workspace */
248 memset(&evenths, 0, sizeof(xcb_event_handlers_t));
249 memset(&prophs, 0, sizeof(xcb_property_handlers_t));
251 byChild = alloc_table();
252 byParent = alloc_table();
254 c = xcb_connect(NULL, &screens);
256 /* TODO: this has to be more beautiful somewhen */
257 int major, minor, error;
259 major = XkbMajorVersion;
260 minor = XkbMinorVersion;
264 if ((xkbdpy = XkbOpenDisplay(getenv("DISPLAY"), &evBase, &errBase, &major, &minor, &error)) == NULL) {
265 fprintf(stderr, "XkbOpenDisplay() failed\n");
270 if (!XkbQueryExtension(xkbdpy,&i1,&evBase,&errBase,&major,&minor)) {
271 fprintf(stderr, "XKB not supported by X-server\n");
274 /* end of ugliness */
276 xcb_event_handlers_init(c, &evenths);
277 for(i = 2; i < 128; ++i)
278 xcb_event_set_handler(&evenths, i, handle_event, 0);
280 for(i = 0; i < 256; ++i)
281 xcb_event_set_error_handler(&evenths, i, (xcb_generic_error_handler_t)handle_event, 0);
283 /* Expose = an Application should redraw itself. That is, we have to redraw our
284 * contents (= top/bottom bar, titlebars for each window) */
285 xcb_event_set_expose_handler(&evenths, handle_expose_event, 0);
287 /* Key presses/releases are pretty obvious, I think */
288 xcb_event_set_key_press_handler(&evenths, handle_key_press, 0);
289 xcb_event_set_key_release_handler(&evenths, handle_key_release, 0);
291 /* Enter window = user moved his mouse over the window */
292 xcb_event_set_enter_notify_handler(&evenths, handle_enter_notify, 0);
294 /* Button press = user pushed a mouse button over one of our windows */
295 xcb_event_set_button_press_handler(&evenths, handle_button_press, 0);
297 xcb_event_set_unmap_notify_handler(&evenths, handle_unmap_notify_event, 0);
299 xcb_property_handlers_init(&prophs, &evenths);
300 xcb_event_set_map_notify_handler(&evenths, handle_map_notify_event, &prophs);
302 xcb_event_set_client_message_handler(&evenths, handle_client_message, 0);
304 xcb_watch_wm_name(&prophs, 128, handle_windowname_change, 0);
306 root = xcb_aux_get_screen(c, screens)->root;
309 uint32_t mask = XCB_CW_EVENT_MASK;
310 uint32_t values[] = { XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_PROPERTY_CHANGE | XCB_EVENT_MASK_ENTER_WINDOW};
311 xcb_change_window_attributes(c, root, mask, values);
313 /* Setup NetWM atoms */
314 /* TODO: needs cleanup, needs more xcb (asynchronous), needs more error checking */
315 #define GET_ATOM(name) { \
316 xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(c, xcb_intern_atom(c, 0, strlen(#name), #name), NULL); \
318 printf("Could not get atom " #name "\n"); \
321 atoms[name] = reply->atom; \
325 GET_ATOM(_NET_SUPPORTED);
326 GET_ATOM(_NET_WM_STATE_FULLSCREEN);
327 GET_ATOM(_NET_SUPPORTING_WM_CHECK);
328 GET_ATOM(_NET_WM_NAME);
329 GET_ATOM(UTF8_STRING);
330 GET_ATOM(_NET_WM_STATE);
332 check_error(c, xcb_change_property_checked(c, XCB_PROP_MODE_REPLACE, root, atoms[_NET_SUPPORTED], ATOM, 32, 5, atoms), "Could not set _NET_SUPPORTED");
334 xcb_change_property(c, XCB_PROP_MODE_REPLACE, root, atoms[_NET_SUPPORTING_WM_CHECK], WINDOW, 32, 1, &root);
336 xcb_change_property(c, XCB_PROP_MODE_REPLACE, root, atoms[_NET_WM_NAME] , atoms[UTF8_STRING], 8, strlen("i3"), "i3");
338 #define BIND(key, modifier, cmd) { \
339 Binding *new = malloc(sizeof(Binding)); \
340 new->keycode = key; \
341 new->mods = modifier; \
342 new->command = cmd; \
343 TAILQ_INSERT_TAIL(&bindings, new, bindings); \
347 BIND(38, BIND_MODE_SWITCH, "foo");
349 BIND(30, 0, "exec /usr/pkg/bin/urxvt");
351 BIND(41, BIND_MOD_1, "f");
353 BIND(44, BIND_MOD_1, "h");
354 BIND(45, BIND_MOD_1, "j");
355 BIND(46, BIND_MOD_1, "k");
356 BIND(47, BIND_MOD_1, "l");
358 BIND(44, BIND_MOD_1 | BIND_CONTROL, "sh");
359 BIND(45, BIND_MOD_1 | BIND_CONTROL, "sj");
360 BIND(46, BIND_MOD_1 | BIND_CONTROL, "sk");
361 BIND(47, BIND_MOD_1 | BIND_CONTROL, "sl");
363 BIND(44, BIND_MOD_1 | BIND_SHIFT, "mh");
364 BIND(45, BIND_MOD_1 | BIND_SHIFT, "mj");
365 BIND(46, BIND_MOD_1 | BIND_SHIFT, "mk");
366 BIND(47, BIND_MOD_1 | BIND_SHIFT, "ml");
368 BIND(10, BIND_MOD_1 , "1");
369 BIND(11, BIND_MOD_1 , "2");
370 BIND(12, BIND_MOD_1 , "3");
371 BIND(13, BIND_MOD_1 , "4");
372 BIND(14, BIND_MOD_1 , "5");
373 BIND(15, BIND_MOD_1 , "6");
374 BIND(16, BIND_MOD_1 , "7");
375 BIND(17, BIND_MOD_1 , "8");
376 BIND(18, BIND_MOD_1 , "9");
377 BIND(19, BIND_MOD_1 , "0");
380 TAILQ_FOREACH(bind, &bindings, bindings) {
381 printf("Grabbing %d\n", bind->keycode);
382 if (bind->mods & BIND_MODE_SWITCH)
383 xcb_grab_key(c, 0, root, 0, bind->keycode, XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_SYNC);
384 else xcb_grab_key(c, 0, root, bind->mods, bind->keycode, XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC);
387 /* check for Xinerama */
388 printf("Checking for Xinerama...\n");
389 initialize_xinerama(c);
391 start_application(TERMINAL);
395 manage_existing_windows(c, &prophs, root);
397 /* Get pointer position to see on which screen we’re starting */
398 xcb_query_pointer_cookie_t pointer_cookie = xcb_query_pointer(c, root);
399 xcb_query_pointer_reply_t *reply = xcb_query_pointer_reply(c, pointer_cookie, NULL);
401 printf("Could not get pointer position\n");
405 i3Screen *screen = get_screen_containing(reply->root_x, reply->root_y);
406 if (screen == NULL) {
407 printf("ERROR: No such screen\n");
410 if (screen->current_workspace != 0) {
411 printf("Ok, I need to go to the other workspace\n");
412 c_ws = &workspaces[screen->current_workspace];
415 xcb_event_wait_for_event_loop(&evenths);