]> git.sur5r.net Git - i3/i3/blobdiff - src/mainx.c
huge change: implement RandR instead of Xinerama
[i3/i3] / src / mainx.c
index 4dbe7794547454bb0594e049f524d82184eba223..8130c0744b2272cbbeaea0ae2eea9c51d0c46e82 100644 (file)
@@ -3,13 +3,12 @@
  *
  * i3 - an improved dynamic tiling window manager
  *
- * © 2009 Michael Stapelberg and contributors
+ * © 2009-2010 Michael Stapelberg and contributors
  *
  * See file LICENSE for license information.
  *
  */
 #include <stdio.h>
-#include <assert.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
 #include <stdbool.h>
 #include <assert.h>
 #include <limits.h>
-
-#include <xcb/xcb.h>
+#include <locale.h>
+#include <fcntl.h>
+#include <getopt.h>
 
 #include <X11/XKBlib.h>
 #include <X11/extensions/XKB.h>
 
-#include <xcb/xcb_wm.h>
+#include <xcb/xcb.h>
+#include <xcb/xcb_atom.h>
 #include <xcb/xcb_aux.h>
 #include <xcb/xcb_event.h>
 #include <xcb/xcb_property.h>
 #include <xcb/xcb_keysyms.h>
 #include <xcb/xcb_icccm.h>
-#include <xcb/xinerama.h>
-#include "data.h"
+
+#include <ev.h>
 
 #include "config.h"
-#include "queue.h"
-#include "table.h"
-#include "font.h"
-#include "layout.h"
+#include "data.h"
 #include "debug.h"
 #include "handlers.h"
+#include "click.h"
+#include "i3.h"
+#include "layout.h"
+#include "queue.h"
+#include "table.h"
 #include "util.h"
 #include "xcb.h"
-#include "xinerama.h"
-#include "i3.h"
+#include "randr.h"
+#include "manage.h"
+#include "ipc.h"
+#include "log.h"
+#include "sighandler.h"
+
+xcb_connection_t *global_conn;
 
 /* This is the path to i3, copied from argv[0] when starting up */
-char *application_path;
+char **start_argv;
 
 /* This is our connection to X11 for use with XKB */
 Display *xkbdpy;
 
+xcb_key_symbols_t *keysyms;
+
 /* The list of key bindings */
-struct bindings_head bindings = TAILQ_HEAD_INITIALIZER(bindings);
+struct bindings_head *bindings;
+
+/* The list of exec-lines */
+struct autostarts_head autostarts = TAILQ_HEAD_INITIALIZER(autostarts);
+
+/* The list of assignments */
+struct assignments_head assignments = TAILQ_HEAD_INITIALIZER(assignments);
 
 /* This is a list of Stack_Windows, global, for easier/faster access on expose events */
 struct stack_wins_head stack_wins = SLIST_HEAD_INITIALIZER(stack_wins);
@@ -61,239 +77,139 @@ struct stack_wins_head stack_wins = SLIST_HEAD_INITIALIZER(stack_wins);
 xcb_event_handlers_t evenths;
 xcb_atom_t atoms[NUM_ATOMS];
 
+xcb_window_t root;
 int num_screens = 0;
 
+/* The depth of the root screen (used e.g. for creating new pixmaps later) */
+uint8_t root_depth;
+
+/* We hope that XKB is supported and set this to false */
+bool xkb_supported = true;
+
 /*
- * Do some sanity checks and then reparent the window.
+ * This callback is only a dummy, see xcb_prepare_cb and xcb_check_cb.
+ * See also man libev(3): "ev_prepare" and "ev_check" - customise your event loop
  *
  */
-void manage_window(xcb_property_handlers_t *prophs, xcb_connection_t *c, xcb_window_t window, window_attributes_t wa) {
-        printf("managing window.\n");
-        xcb_drawable_t d = { window };
-        xcb_get_geometry_cookie_t geomc;
-        xcb_get_geometry_reply_t *geom;
-        xcb_get_window_attributes_reply_t *attr = 0;
-
-        if (wa.tag == TAG_COOKIE) {
-                /* Check if the window is mapped (it could be not mapped when intializing and
-                   calling manage_window() for every window) */
-                if ((attr = xcb_get_window_attributes_reply(c, wa.u.cookie, 0)) == NULL)
-                        return;
-
-                if (attr->map_state != XCB_MAP_STATE_VIEWABLE)
-                        goto out;
-
-                wa.tag = TAG_VALUE;
-                wa.u.override_redirect = attr->override_redirect;
-        }
-
-        /* Don’t manage clients with the override_redirect flag */
-        if (wa.u.override_redirect)
-                goto out;
-
-        /* Check if the window is already managed */
-        if (table_get(byChild, window))
-                goto out;
-
-        /* Get the initial geometry (position, size, …) */
-        geomc = xcb_get_geometry(c, d);
-        if (!attr) {
-                wa.tag = TAG_COOKIE;
-                wa.u.cookie = xcb_get_window_attributes(c, window);
-                attr = xcb_get_window_attributes_reply(c, wa.u.cookie, 0);
-        }
-        geom = xcb_get_geometry_reply(c, geomc, 0);
-        if (attr && geom) {
-                reparent_window(c, window, attr->visual, geom->root, geom->depth,
-                                geom->x, geom->y, geom->width, geom->height);
-                xcb_property_changed(prophs, XCB_PROPERTY_NEW_VALUE, window, WM_NAME);
-        }
-
-        free(geom);
-out:
-        free(attr);
-        return;
+static void xcb_got_event(EV_P_ struct ev_io *w, int revents) {
+        /* empty, because xcb_prepare_cb and xcb_check_cb are used */
 }
 
 /*
- * reparent_window() gets called when a new window was opened and becomes a child of the root
- * window, or it gets called by us when we manage the already existing windows at startup.
- *
- * Essentially, this is the point where we take over control.
+ * Flush before blocking (and waiting for new events)
  *
  */
-void reparent_window(xcb_connection_t *conn, xcb_window_t child,
-                xcb_visualid_t visual, xcb_window_t root, uint8_t depth,
-                int16_t x, int16_t y, uint16_t width, uint16_t height) {
-
-        xcb_get_property_cookie_t wm_type_cookie, strut_cookie;
-
-        /* Place requests for properties ASAP */
-        wm_type_cookie = xcb_get_any_property_unchecked(conn, false, child, atoms[_NET_WM_WINDOW_TYPE], UINT32_MAX);
-        strut_cookie = xcb_get_any_property_unchecked(conn, false, child, atoms[_NET_WM_STRUT_PARTIAL], UINT32_MAX);
-
-        Client *new = table_get(byChild, child);
-
-        /* Events for already managed windows should already be filtered in manage_window() */
-        assert(new == NULL);
-
-        printf("reparenting new client\n");
-        new = calloc(sizeof(Client), 1);
-        new->force_reconfigure = true;
-        uint32_t mask = 0;
-        uint32_t values[3];
-
-        /* Update the data structures */
-        Client *old_focused = CUR_CELL->currently_focused;
-        CUR_CELL->currently_focused = new;
-        new->container = CUR_CELL;
-
-        new->frame = xcb_generate_id(conn);
-        new->child = child;
-        new->rect.width = width;
-        new->rect.height = height;
-
-        /* Don’t generate events for our new window, it should *not* be managed */
-        mask |= XCB_CW_OVERRIDE_REDIRECT;
-        values[0] = 1;
-
-        /* We want to know when… */
-        mask |= XCB_CW_EVENT_MASK;
-        values[1] =     XCB_EVENT_MASK_BUTTON_PRESS |   /* …mouse is pressed/released */
-                        XCB_EVENT_MASK_BUTTON_RELEASE |
-                        XCB_EVENT_MASK_EXPOSURE |       /* …our window needs to be redrawn */
-                        XCB_EVENT_MASK_ENTER_WINDOW;    /* …user moves cursor inside our window */
-
-        printf("Reparenting 0x%08x under 0x%08x.\n", child, new->frame);
-
-        i3Font *font = load_font(conn, config.font);
-        width = min(width, c_ws->rect.x + c_ws->rect.width);
-        height = min(height, c_ws->rect.y + c_ws->rect.height);
-
-        Rect framerect = {x, y,
-                          width + 2 + 2,                  /* 2 px border at each side */
-                          height + 2 + 2 + font->height}; /* 2 px border plus font’s height */
-
-        /* Yo dawg, I heard you like windows, so I create a window around your window… */
-        new->frame = create_window(conn, framerect, XCB_WINDOW_CLASS_INPUT_OUTPUT, mask, values);
-
-        /* Put the client inside the save set. Upon termination (whether killed or normal exit
-           does not matter) of the window manager, these clients will be correctly reparented
-           to their most closest living ancestor (= cleanup) */
-        xcb_change_save_set(conn, XCB_SET_MODE_INSERT, child);
-
-        /* Generate a graphics context for the titlebar */
-        new->titlegc = xcb_generate_id(conn);
-        xcb_create_gc(conn, new->titlegc, new->frame, 0, 0);
-
-        /* Put our data structure (Client) into the table */
-        table_put(byParent, new->frame, new);
-        table_put(byChild, child, new);
-
-        /* Moves the original window into the new frame we've created for it */
-        new->awaiting_useless_unmap = true;
-        xcb_void_cookie_t cookie = xcb_reparent_window_checked(conn, child, new->frame, 0, font->height);
-        check_error(conn, cookie, "Could not reparent window");
-
-        /* We are interested in property changes */
-        mask = XCB_CW_EVENT_MASK;
-        values[0] =     XCB_EVENT_MASK_PROPERTY_CHANGE |
-                        XCB_EVENT_MASK_STRUCTURE_NOTIFY |
-                        XCB_EVENT_MASK_ENTER_WINDOW;
-        cookie = xcb_change_window_attributes_checked(conn, child, mask, values);
-        check_error(conn, cookie, "Could not change window attributes");
-
-        /* We need to grab the mouse buttons for click to focus */
-        xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
-                        XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
-                        1 /* left mouse button */,
-                        XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
-
-        /* Focus the new window */
-        xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, new->child, XCB_CURRENT_TIME);
-
-        /* Get _NET_WM_WINDOW_TYPE (to see if it’s a dock) */
-        xcb_atom_t *atom;
-        xcb_get_property_reply_t *preply = xcb_get_property_reply(conn, wm_type_cookie, NULL);
-        if (preply != NULL && preply->value_len > 0 && (atom = xcb_get_property_value(preply))) {
-                for (int i = 0; i < xcb_get_property_value_length(preply); i++)
-                        if (atom[i] == atoms[_NET_WM_WINDOW_TYPE_DOCK]) {
-                                printf("Window is a dock.\n");
-                                new->dock = true;
-                                new->titlebar_position = TITLEBAR_OFF;
-                                new->force_reconfigure = true;
-                                new->container = NULL;
-                                SLIST_INSERT_HEAD(&(c_ws->dock_clients), new, dock_clients);
-                        }
-        }
+static void xcb_prepare_cb(EV_P_ ev_prepare *w, int revents) {
+        xcb_flush(evenths.c);
+}
 
-        /* Get _NET_WM_STRUT_PARTIAL to determine the client’s requested height */
-        uint32_t *strut;
-        preply = xcb_get_property_reply(conn, strut_cookie, NULL);
-        if (preply != NULL && preply->value_len > 0 && (strut = xcb_get_property_value(preply))) {
-                /* We only use a subset of the provided values, namely the reserved space at the top/bottom
-                   of the screen. This is because the only possibility for bars is at to be at the top/bottom
-                   with maximum horizontal size.
-                   TODO: bars at the top */
-                new->desired_height = strut[3];
-                printf("the client wants to be %d pixels height\n", new->desired_height);
-        }
+/*
+ * Instead of polling the X connection socket we leave this to
+ * xcb_poll_for_event() which knows better than we can ever know.
+ *
+ */
+static void xcb_check_cb(EV_P_ ev_check *w, int revents) {
+        xcb_generic_event_t *event;
 
-        /* Insert into the currently active container, if it’s not a dock window */
-        if (!new->dock) {
-                /* Insert after the old active client, if existing. If it does not exist, the
-                   container is empty and it does not matter, where we insert it */
-                if (old_focused != NULL)
-                        CIRCLEQ_INSERT_AFTER(&(CUR_CELL->clients), old_focused, new, clients);
-                else CIRCLEQ_INSERT_TAIL(&(CUR_CELL->clients), new, clients);
+        while ((event = xcb_poll_for_event(evenths.c)) != NULL) {
+                xcb_event_handle(&evenths, event);
+                free(event);
         }
-
-        render_layout(conn);
 }
 
 /*
- * Go through all existing windows (if the window manager is restarted) and manage them
+ * When using xmodmap to change the keyboard mapping, this event
+ * is only sent via XKB. Therefore, we need this special handler.
  *
  */
-void manage_existing_windows(xcb_connection_t *c, xcb_property_handlers_t *prophs, xcb_window_t root) {
-        xcb_query_tree_reply_t *reply;
-        int i, len;
-        xcb_window_t *children;
-        xcb_get_window_attributes_cookie_t *cookies;
-
-        /* Get the tree of windows whose parent is the root window (= all) */
-        if ((reply = xcb_query_tree_reply(c, xcb_query_tree(c, root), 0)) == NULL)
-                return;
-
-        len = xcb_query_tree_children_length(reply);
-        cookies = smalloc(len * sizeof(*cookies));
-
-        /* Request the window attributes for every window */
-        children = xcb_query_tree_children(reply);
-        for(i = 0; i < len; ++i)
-                cookies[i] = xcb_get_window_attributes(c, children[i]);
-
-        /* Call manage_window with the attributes for every window */
-        for(i = 0; i < len; ++i) {
-                window_attributes_t wa = { TAG_COOKIE, { cookies[i] } };
-                manage_window(prophs, c, children[i], wa);
-        }
+static void xkb_got_event(EV_P_ struct ev_io *w, int revents) {
+        DLOG("Handling XKB event\n");
+        XEvent ev;
+        /* When using xmodmap, every change (!) gets an own event.
+         * Therefore, we just read all events and only handle the
+         * mapping_notify once (we do not receive any other XKB
+         * events anyway). */
+        while (XPending(xkbdpy))
+                XNextEvent(xkbdpy, &ev);
+
+        xcb_key_symbols_free(keysyms);
+        keysyms = xcb_key_symbols_alloc(global_conn);
+
+        xcb_get_numlock_mask(global_conn);
+
+        ungrab_all_keys(global_conn);
+        DLOG("Re-grabbing...\n");
+        grab_all_keys(global_conn);
+        DLOG("Done\n");
 
-        free(reply);
 }
 
+
 int main(int argc, char *argv[], char *env[]) {
-        int i, screens;
-        xcb_connection_t *c;
+        int i, screens, opt;
+        char *override_configpath = NULL;
+        bool autostart = true;
+        bool only_check_config = false;
+        xcb_connection_t *conn;
         xcb_property_handlers_t prophs;
-        xcb_window_t root;
         xcb_intern_atom_cookie_t atom_cookies[NUM_ATOMS];
+        static struct option long_options[] = {
+                {"no-autostart", no_argument, 0, 'a'},
+                {"config", required_argument, 0, 'c'},
+                {"version", no_argument, 0, 'v'},
+                {"help", no_argument, 0, 'h'},
+                {0, 0, 0, 0}
+        };
+        int option_index = 0;
+
+        setlocale(LC_ALL, "");
 
         /* Disable output buffering to make redirects in .xsession actually useful for debugging */
         if (!isatty(fileno(stdout)))
                 setbuf(stdout, NULL);
 
-        application_path = sstrdup(argv[0]);
+        start_argv = argv;
+
+        while ((opt = getopt_long(argc, argv, "c:Cvahld:V", long_options, &option_index)) != -1) {
+                switch (opt) {
+                        case 'a':
+                                LOG("Autostart disabled using -a\n");
+                                autostart = false;
+                                break;
+                        case 'c':
+                                override_configpath = sstrdup(optarg);
+                                break;
+                        case 'C':
+                                LOG("Checking configuration file only (-C)\n");
+                                only_check_config = true;
+                                break;
+                        case 'v':
+                                printf("i3 version " I3_VERSION " © 2009 Michael Stapelberg and contributors\n");
+                                exit(EXIT_SUCCESS);
+                        case 'V':
+                                set_verbosity(true);
+                                break;
+                        case 'd':
+                                LOG("Enabling debug loglevel %s\n", optarg);
+                                add_loglevel(optarg);
+                                break;
+                        case 'l':
+                                /* DEPRECATED, ignored for the next 3 versions (3.e, 3.f, 3.g) */
+                                break;
+                        default:
+                                fprintf(stderr, "Usage: %s [-c configfile] [-d loglevel] [-a] [-v] [-V] [-C]\n", argv[0]);
+                                fprintf(stderr, "\n");
+                                fprintf(stderr, "-a: disable autostart\n");
+                                fprintf(stderr, "-v: display version and exit\n");
+                                fprintf(stderr, "-V: enable verbose mode\n");
+                                fprintf(stderr, "-d <loglevel>: enable debug loglevel <loglevel>\n");
+                                fprintf(stderr, "-c <configfile>: use the provided configfile instead\n");
+                                fprintf(stderr, "-C: check configuration file and exit\n");
+                                exit(EXIT_FAILURE);
+                }
+        }
+
+        LOG("i3 version " I3_VERSION " starting\n");
 
         /* Initialize the table data structures for each workspace */
         init_table();
@@ -301,15 +217,27 @@ int main(int argc, char *argv[], char *env[]) {
         memset(&evenths, 0, sizeof(xcb_event_handlers_t));
         memset(&prophs, 0, sizeof(xcb_property_handlers_t));
 
-        byChild = alloc_table();
-        byParent = alloc_table();
+        conn = global_conn = xcb_connect(NULL, &screens);
 
-        load_configuration(NULL);
+        if (xcb_connection_has_error(conn))
+                die("Cannot open display\n");
 
-        c = xcb_connect(NULL, &screens);
+        load_configuration(conn, override_configpath, false);
+        if (only_check_config) {
+                LOG("Done checking configuration file. Exiting.\n");
+                exit(0);
+        }
+
+        /* Create the initial container on the first workspace. This used to
+         * be part of init_table, but since it possibly requires an X
+         * connection and a loaded configuration (default mode for new
+         * containers may be stacking, which requires a new window to be
+         * created), it had to be delayed. */
+        expand_table_cols(TAILQ_FIRST(workspaces));
+        expand_table_rows(TAILQ_FIRST(workspaces));
 
         /* Place requests for the atoms we need as soon as possible */
-        #define REQUEST_ATOM(name) atom_cookies[name] = xcb_intern_atom(c, 0, strlen(#name), #name);
+        #define REQUEST_ATOM(name) atom_cookies[name] = xcb_intern_atom(conn, 0, strlen(#name), #name);
 
         REQUEST_ATOM(_NET_SUPPORTED);
         REQUEST_ATOM(_NET_WM_STATE_FULLSCREEN);
@@ -319,8 +247,19 @@ int main(int argc, char *argv[], char *env[]) {
         REQUEST_ATOM(_NET_WM_WINDOW_TYPE);
         REQUEST_ATOM(_NET_WM_DESKTOP);
         REQUEST_ATOM(_NET_WM_WINDOW_TYPE_DOCK);
+        REQUEST_ATOM(_NET_WM_WINDOW_TYPE_DIALOG);
+        REQUEST_ATOM(_NET_WM_WINDOW_TYPE_UTILITY);
+        REQUEST_ATOM(_NET_WM_WINDOW_TYPE_TOOLBAR);
+        REQUEST_ATOM(_NET_WM_WINDOW_TYPE_SPLASH);
         REQUEST_ATOM(_NET_WM_STRUT_PARTIAL);
+        REQUEST_ATOM(WM_PROTOCOLS);
+        REQUEST_ATOM(WM_DELETE_WINDOW);
         REQUEST_ATOM(UTF8_STRING);
+        REQUEST_ATOM(WM_STATE);
+        REQUEST_ATOM(WM_CLIENT_LEADER);
+        REQUEST_ATOM(_NET_CURRENT_DESKTOP);
+        REQUEST_ATOM(_NET_ACTIVE_WINDOW);
+        REQUEST_ATOM(_NET_WORKAREA);
 
         /* TODO: this has to be more beautiful somewhen */
         int major, minor, error;
@@ -331,18 +270,60 @@ int main(int argc, char *argv[], char *env[]) {
         int evBase, errBase;
 
         if ((xkbdpy = XkbOpenDisplay(getenv("DISPLAY"), &evBase, &errBase, &major, &minor, &error)) == NULL) {
-                fprintf(stderr, "XkbOpenDisplay() failed\n");
-                return 1;
+                ELOG("ERROR: XkbOpenDisplay() failed, disabling XKB support\n");
+                xkb_supported = false;
         }
 
-        int i1;
-        if (!XkbQueryExtension(xkbdpy,&i1,&evBase,&errBase,&major,&minor)) {
-                fprintf(stderr, "XKB not supported by X-server\n");
-                return 1;
+        if (xkb_supported) {
+                if (fcntl(ConnectionNumber(xkbdpy), F_SETFD, FD_CLOEXEC) == -1) {
+                        fprintf(stderr, "Could not set FD_CLOEXEC on xkbdpy\n");
+                        return 1;
+                }
+
+                int i1;
+                if (!XkbQueryExtension(xkbdpy,&i1,&evBase,&errBase,&major,&minor)) {
+                        fprintf(stderr, "XKB not supported by X-server\n");
+                        return 1;
+                }
+                /* end of ugliness */
+
+                if (!XkbSelectEvents(xkbdpy, XkbUseCoreKbd, XkbMapNotifyMask, XkbMapNotifyMask)) {
+                        fprintf(stderr, "Could not set XKB event mask\n");
+                        return 1;
+                }
         }
-        /* end of ugliness */
 
-        xcb_event_handlers_init(c, &evenths);
+        /* Initialize event loop using libev */
+        struct ev_loop *loop = ev_loop_new(0);
+        if (loop == NULL)
+                die("Could not initialize libev. Bad LIBEV_FLAGS?\n");
+
+        struct ev_io *xcb_watcher = scalloc(sizeof(struct ev_io));
+        struct ev_io *xkb = scalloc(sizeof(struct ev_io));
+        struct ev_check *xcb_check = scalloc(sizeof(struct ev_check));
+        struct ev_prepare *xcb_prepare = scalloc(sizeof(struct ev_prepare));
+
+        ev_io_init(xcb_watcher, xcb_got_event, xcb_get_file_descriptor(conn), EV_READ);
+        ev_io_start(loop, xcb_watcher);
+
+        if (xkb_supported) {
+                ev_io_init(xkb, xkb_got_event, ConnectionNumber(xkbdpy), EV_READ);
+                ev_io_start(loop, xkb);
+
+                /* Flush the buffer so that libev can properly get new events */
+                XFlush(xkbdpy);
+        }
+
+        ev_check_init(xcb_check, xcb_check_cb);
+        ev_check_start(loop, xcb_check);
+
+        ev_prepare_init(xcb_prepare, xcb_prepare_cb);
+        ev_prepare_start(loop, xcb_prepare);
+
+        /* Grab the server to delay any events until we enter the eventloop */
+        xcb_grab_server(conn);
+
+        xcb_event_handlers_init(conn, &evenths);
 
         /* DEBUG: Trap all events and print them */
         for (i = 2; i < 128; ++i)
@@ -352,56 +333,71 @@ int main(int argc, char *argv[], char *env[]) {
                 xcb_event_set_error_handler(&evenths, i, (xcb_generic_error_handler_t)handle_event, 0);
 
         /* Expose = an Application should redraw itself, in this case it’s our titlebars. */
-        xcb_event_set_expose_handler(&evenths, handle_expose_event, 0);
+        xcb_event_set_expose_handler(&evenths, handle_expose_event, NULL);
 
         /* Key presses/releases are pretty obvious, I think */
-        xcb_event_set_key_press_handler(&evenths, handle_key_press, 0);
-        xcb_event_set_key_release_handler(&evenths, handle_key_release, 0);
+        xcb_event_set_key_press_handler(&evenths, handle_key_press, NULL);
+        xcb_event_set_key_release_handler(&evenths, handle_key_release, NULL);
 
         /* Enter window = user moved his mouse over the window */
-        xcb_event_set_enter_notify_handler(&evenths, handle_enter_notify, 0);
+        xcb_event_set_enter_notify_handler(&evenths, handle_enter_notify, NULL);
 
         /* Button press = user pushed a mouse button over one of our windows */
-        xcb_event_set_button_press_handler(&evenths, handle_button_press, 0);
+        xcb_event_set_button_press_handler(&evenths, handle_button_press, NULL);
 
         /* Map notify = there is a new window */
-        xcb_event_set_map_notify_handler(&evenths, handle_map_notify_event, &prophs);
+        xcb_event_set_map_request_handler(&evenths, handle_map_request, &prophs);
 
         /* Unmap notify = window disappeared. When sent from a client, we don’t manage
            it any longer. Usually, the client destroys the window shortly afterwards. */
-        xcb_event_set_unmap_notify_handler(&evenths, handle_unmap_notify_event, 0);
+        xcb_event_set_unmap_notify_handler(&evenths, handle_unmap_notify_event, NULL);
 
         /* Configure notify = window’s configuration (geometry, stacking, …). We only need
            it to set up ignore the following enter_notify events */
-        xcb_event_set_configure_notify_handler(&evenths, handle_configure_event, 0);
+        xcb_event_set_configure_notify_handler(&evenths, handle_configure_event, NULL);
 
-        /* Client message = client changed its properties (EWMH) */
-        /* TODO: can’t we do this via property handlers? */
-        xcb_event_set_client_message_handler(&evenths, handle_client_message, 0);
+        /* Configure request = window tried to change size on its own */
+        xcb_event_set_configure_request_handler(&evenths, handle_configure_request, NULL);
+
+        /* Motion notify = user moved his cursor (over the root window and may
+         * cross virtual screen boundaries doing that) */
+        xcb_event_set_motion_notify_handler(&evenths, handle_motion_notify, NULL);
+
+        /* Mapping notify = keyboard mapping changed (Xmodmap), re-grab bindings */
+        xcb_event_set_mapping_notify_handler(&evenths, handle_mapping_notify, NULL);
+
+        /* Client message are sent to the root window. The only interesting client message
+           for us is _NET_WM_STATE, we honour _NET_WM_STATE_FULLSCREEN */
+        xcb_event_set_client_message_handler(&evenths, handle_client_message, NULL);
 
         /* Initialize the property handlers */
         xcb_property_handlers_init(&prophs, &evenths);
 
-        /* Watch the WM_NAME (= title of the window) property */
-        xcb_watch_wm_name(&prophs, 128, handle_windowname_change, 0);
+        /* Watch size hints (to obey correct aspect ratio) */
+        xcb_property_set_handler(&prophs, WM_NORMAL_HINTS, UINT_MAX, handle_normal_hints, NULL);
 
         /* Get the root window and set the event mask */
-        root = xcb_aux_get_screen(c, screens)->root;
+        xcb_screen_t *root_screen = xcb_aux_get_screen(conn, screens);
+        root = root_screen->root;
+        root_depth = root_screen->root_depth;
 
         uint32_t mask = XCB_CW_EVENT_MASK;
-        uint32_t values[] = { XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY |
+        uint32_t values[] = { XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT |
                               XCB_EVENT_MASK_STRUCTURE_NOTIFY |         /* when the user adds a screen (e.g. video
                                                                            projector), the root window gets a
                                                                            ConfigureNotify */
+                              XCB_EVENT_MASK_POINTER_MOTION |
                               XCB_EVENT_MASK_PROPERTY_CHANGE |
                               XCB_EVENT_MASK_ENTER_WINDOW };
-        xcb_change_window_attributes(c, root, mask, values);
+        xcb_void_cookie_t cookie;
+        cookie = xcb_change_window_attributes_checked(conn, root, mask, values);
+        check_error(conn, cookie, "Another window manager seems to be running");
 
         /* Setup NetWM atoms */
         #define GET_ATOM(name) { \
-                xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(c, atom_cookies[name], NULL); \
+                xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(conn, atom_cookies[name], NULL); \
                 if (!reply) { \
-                        printf("Could not get atom " #name "\n"); \
+                        ELOG("Could not get atom " #name "\n"); \
                         exit(-1); \
                 } \
                 atoms[name] = reply->atom; \
@@ -416,59 +412,112 @@ int main(int argc, char *argv[], char *env[]) {
         GET_ATOM(_NET_WM_WINDOW_TYPE);
         GET_ATOM(_NET_WM_DESKTOP);
         GET_ATOM(_NET_WM_WINDOW_TYPE_DOCK);
+        GET_ATOM(_NET_WM_WINDOW_TYPE_DIALOG);
+        GET_ATOM(_NET_WM_WINDOW_TYPE_UTILITY);
+        GET_ATOM(_NET_WM_WINDOW_TYPE_TOOLBAR);
+        GET_ATOM(_NET_WM_WINDOW_TYPE_SPLASH);
         GET_ATOM(_NET_WM_STRUT_PARTIAL);
+        GET_ATOM(WM_PROTOCOLS);
+        GET_ATOM(WM_DELETE_WINDOW);
         GET_ATOM(UTF8_STRING);
+        GET_ATOM(WM_STATE);
+        GET_ATOM(WM_CLIENT_LEADER);
+        GET_ATOM(_NET_CURRENT_DESKTOP);
+        GET_ATOM(_NET_ACTIVE_WINDOW);
+        GET_ATOM(_NET_WORKAREA);
 
-        xcb_property_set_handler(&prophs, atoms[_NET_WM_WINDOW_TYPE], UINT_MAX, window_type_handler, NULL);
+        xcb_property_set_handler(&prophs, atoms[_NET_WM_WINDOW_TYPE], UINT_MAX, handle_window_type, NULL);
         /* TODO: In order to comply with EWMH, we have to watch _NET_WM_STRUT_PARTIAL */
 
+        /* Watch _NET_WM_NAME (= title of the window in UTF-8) property */
+        xcb_property_set_handler(&prophs, atoms[_NET_WM_NAME], 128, handle_windowname_change, NULL);
+
+        /* Watch WM_TRANSIENT_FOR property (to which client this popup window belongs) */
+        xcb_property_set_handler(&prophs, WM_TRANSIENT_FOR, UINT_MAX, handle_transient_for, NULL);
+
+        /* Watch WM_NAME (= title of the window in compound text) property for legacy applications */
+        xcb_watch_wm_name(&prophs, 128, handle_windowname_change_legacy, NULL);
+
+        /* Watch WM_CLASS (= class of the window) */
+        xcb_property_set_handler(&prophs, WM_CLASS, 128, handle_windowclass_change, NULL);
+
+        /* Watch WM_CLIENT_LEADER (= logical parent window for toolbars etc.) */
+        xcb_property_set_handler(&prophs, atoms[WM_CLIENT_LEADER], UINT_MAX, handle_clientleader_change, NULL);
+
+        /* Watch WM_HINTS (contains the urgent property) */
+        xcb_property_set_handler(&prophs, WM_HINTS, UINT_MAX, handle_hints, NULL);
+
         /* Set up the atoms we support */
-        check_error(c, xcb_change_property_checked(c, XCB_PROP_MODE_REPLACE, root, atoms[_NET_SUPPORTED],
+        check_error(conn, xcb_change_property_checked(conn, XCB_PROP_MODE_REPLACE, root, atoms[_NET_SUPPORTED],
                        ATOM, 32, 7, atoms), "Could not set _NET_SUPPORTED");
-
         /* Set up the window manager’s name */
-        xcb_change_property(c, XCB_PROP_MODE_REPLACE, root, atoms[_NET_SUPPORTING_WM_CHECK], WINDOW, 32, 1, &root);
-        xcb_change_property(c, XCB_PROP_MODE_REPLACE, root, atoms[_NET_WM_NAME], atoms[UTF8_STRING], 8, strlen("i3"), "i3");
-
-        /* Grab the bound keys */
-        Binding *bind;
-        TAILQ_FOREACH(bind, &bindings, bindings) {
-                printf("Grabbing %d\n", bind->keycode);
-                if (bind->mods & BIND_MODE_SWITCH)
-                        xcb_grab_key(c, 0, root, 0, bind->keycode, XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_SYNC);
-                else xcb_grab_key(c, 0, root, bind->mods, bind->keycode, XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC);
-        }
+        xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, atoms[_NET_SUPPORTING_WM_CHECK], WINDOW, 32, 1, &root);
+        xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, atoms[_NET_WM_NAME], atoms[UTF8_STRING], 8, strlen("i3"), "i3");
+
+        keysyms = xcb_key_symbols_alloc(conn);
+
+        xcb_get_numlock_mask(conn);
 
-        /* check for Xinerama */
-        printf("Checking for Xinerama...\n");
-        initialize_xinerama(c);
+        grab_all_keys(conn);
 
-        /* DEBUG: Start a terminal */
-        start_application(config.terminal);
+        /* Autostarting exec-lines */
+        struct Autostart *exec;
+        if (autostart) {
+                TAILQ_FOREACH(exec, &autostarts, autostarts) {
+                        LOG("auto-starting %s\n", exec->command);
+                        start_application(exec->command);
+                }
+        }
+
+        DLOG("Checking for XRandR...\n");
+        int randr_base;
+        initialize_randr(conn, &randr_base);
 
-        xcb_flush(c);
+        xcb_event_set_handler(&evenths,
+                              randr_base + XCB_RANDR_SCREEN_CHANGE_NOTIFY,
+                              handle_screen_change,
+                              NULL);
 
-        manage_existing_windows(c, &prophs, root);
+        xcb_flush(conn);
 
         /* Get pointer position to see on which screen we’re starting */
         xcb_query_pointer_reply_t *reply;
-        if ((reply = xcb_query_pointer_reply(c, xcb_query_pointer(c, root), NULL)) == NULL) {
-                printf("Could not get pointer position\n");
+        if ((reply = xcb_query_pointer_reply(conn, xcb_query_pointer(conn, root), NULL)) == NULL) {
+                ELOG("Could not get pointer position\n");
                 return 1;
         }
 
-        i3Screen *screen = get_screen_containing(reply->root_x, reply->root_y);
+        Output *screen = get_screen_containing(reply->root_x, reply->root_y);
         if (screen == NULL) {
-                printf("ERROR: No screen at %d x %d\n", reply->root_x, reply->root_y);
-                return 0;
+                ELOG("ERROR: No screen at %d x %d, starting on the first screen\n",
+                    reply->root_x, reply->root_y);
+                screen = get_first_output();
         }
-        if (screen->current_workspace != 0) {
-                printf("Ok, I need to go to the other workspace\n");
-                c_ws = &workspaces[screen->current_workspace];
+
+        DLOG("Starting on %p\n", screen->current_workspace);
+        c_ws = screen->current_workspace;
+
+        manage_existing_windows(conn, &prophs, root);
+
+        /* Create the UNIX domain socket for IPC */
+        if (config.ipc_socket_path != NULL) {
+                int ipc_socket = ipc_create_socket(config.ipc_socket_path);
+                if (ipc_socket == -1) {
+                        ELOG("Could not create the IPC socket, IPC disabled\n");
+                } else {
+                        struct ev_io *ipc_io = scalloc(sizeof(struct ev_io));
+                        ev_io_init(ipc_io, ipc_new_client, ipc_socket, EV_READ);
+                        ev_io_start(loop, ipc_io);
+                }
         }
 
-        /* Enter xcb’s event handler */
-        xcb_event_wait_for_event_loop(&evenths);
+        /* Handle the events which arrived until now */
+        xcb_check_cb(NULL, NULL, 0);
+
+        setup_signal_handler();
+        /* Ungrab the server to receive events and enter libev’s eventloop */
+        xcb_ungrab_server(conn);
+        ev_loop(loop, 0);
 
         /* not reached */
         return 0;