]> git.sur5r.net Git - i3/i3/blobdiff - src/mainx.c
Fix unaligned memory access on sparc (Thanks David Coppa)
[i3/i3] / src / mainx.c
index 9c38c4acd74b2c9c45f356b518fc9807c171234e..4126fe58be0dac3b0dcb17fd0426a2c35ba279a4 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>
@@ -31,7 +30,6 @@
 #include <xcb/xcb_property.h>
 #include <xcb/xcb_keysyms.h>
 #include <xcb/xcb_icccm.h>
-#include <xcb/xinerama.h>
 
 #include <ev.h>
 
 #include "table.h"
 #include "util.h"
 #include "xcb.h"
+#include "randr.h"
 #include "xinerama.h"
 #include "manage.h"
 #include "ipc.h"
 #include "log.h"
+#include "sighandler.h"
+
+static int xkb_event_base;
+
+int xkb_current_group;
 
 xcb_connection_t *global_conn;
 
@@ -125,14 +129,54 @@ static void xcb_check_cb(EV_P_ ev_check *w, int revents) {
  */
 static void xkb_got_event(EV_P_ struct ev_io *w, int revents) {
         DLOG("Handling XKB event\n");
-        XEvent ev;
+        XkbEvent 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);
+         * mapping_notify once. */
+        bool mapping_changed = false;
+        while (XPending(xkbdpy)) {
+                XNextEvent(xkbdpy, (XEvent*)&ev);
+                /* While we should never receive a non-XKB event,
+                 * better do sanity checking */
+                if (ev.type != xkb_event_base)
+                        continue;
+
+                if (ev.any.xkb_type == XkbMapNotify) {
+                        mapping_changed = true;
+                        continue;
+                }
+
+                if (ev.any.xkb_type != XkbStateNotify) {
+                        ELOG("Unknown XKB event received (type %d)\n", ev.any.xkb_type);
+                        continue;
+                }
+
+                /* See The XKB Extension: Library Specification, section 14.1 */
+                /* We check if the current group (each group contains
+                 * two levels) has been changed. Mode_switch activates
+                 * group XkbGroup2Index */
+                if (xkb_current_group == ev.state.group)
+                        continue;
+
+                xkb_current_group = ev.state.group;
+
+                if (ev.state.group == XkbGroup2Index) {
+                        DLOG("Mode_switch enabled\n");
+                        grab_all_keys(global_conn, true);
+                }
+
+                if (ev.state.group == XkbGroup1Index) {
+                        DLOG("Mode_switch disabled\n");
+                        ungrab_all_keys(global_conn);
+                        grab_all_keys(global_conn, false);
+                }
+        }
+
+        if (!mapping_changed)
+                return;
 
+        DLOG("Keyboard mapping changed, updating keybindings\n");
         xcb_key_symbols_free(keysyms);
         keysyms = xcb_key_symbols_alloc(global_conn);
 
@@ -140,9 +184,9 @@ static void xkb_got_event(EV_P_ struct ev_io *w, int revents) {
 
         ungrab_all_keys(global_conn);
         DLOG("Re-grabbing...\n");
-        grab_all_keys(global_conn);
+        translate_keysyms();
+        grab_all_keys(global_conn, (xkb_current_group == XkbGroup2Index));
         DLOG("Done\n");
-
 }
 
 
@@ -150,6 +194,8 @@ int main(int argc, char *argv[], char *env[]) {
         int i, screens, opt;
         char *override_configpath = NULL;
         bool autostart = true;
+        bool only_check_config = false;
+        bool force_xinerama = false;
         xcb_connection_t *conn;
         xcb_property_handlers_t prophs;
         xcb_intern_atom_cookie_t atom_cookies[NUM_ATOMS];
@@ -158,6 +204,7 @@ int main(int argc, char *argv[], char *env[]) {
                 {"config", required_argument, 0, 'c'},
                 {"version", no_argument, 0, 'v'},
                 {"help", no_argument, 0, 'h'},
+                {"force-xinerama", no_argument, 0, 0},
                 {0, 0, 0, 0}
         };
         int option_index = 0;
@@ -170,7 +217,7 @@ int main(int argc, char *argv[], char *env[]) {
 
         start_argv = argv;
 
-        while ((opt = getopt_long(argc, argv, "c:vahld:V", long_options, &option_index)) != -1) {
+        while ((opt = getopt_long(argc, argv, "c:Cvahld:V", long_options, &option_index)) != -1) {
                 switch (opt) {
                         case 'a':
                                 LOG("Autostart disabled using -a\n");
@@ -179,8 +226,12 @@ int main(int argc, char *argv[], char *env[]) {
                         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");
+                                printf("i3 version " I3_VERSION " © 2009-2010 Michael Stapelberg and contributors\n");
                                 exit(EXIT_SUCCESS);
                         case 'V':
                                 set_verbosity(true);
@@ -192,14 +243,29 @@ int main(int argc, char *argv[], char *env[]) {
                         case 'l':
                                 /* DEPRECATED, ignored for the next 3 versions (3.e, 3.f, 3.g) */
                                 break;
+                        case 0:
+                                if (strcmp(long_options[option_index].name, "force-xinerama") == 0) {
+                                        force_xinerama = true;
+                                        ELOG("Using Xinerama instead of RandR. This option should be "
+                                             "avoided at all cost because it does not refresh the list "
+                                             "of screens, so you cannot configure displays at runtime. "
+                                             "Please check if your driver really does not support RandR "
+                                             "and disable this option as soon as you can.\n");
+                                        break;
+                                }
+                                /* fall-through */
                         default:
-                                fprintf(stderr, "Usage: %s [-c configfile] [-d loglevel] [-a] [-v] [-V]\n", argv[0]);
+                                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");
+                                fprintf(stderr, "--force-xinerama: Use Xinerama instead of RandR. This "
+                                                "option should only be used if you are stuck with the "
+                                                "nvidia closed source driver which does not support RandR.\n");
                                 exit(EXIT_FAILURE);
                 }
         }
@@ -217,7 +283,16 @@ int main(int argc, char *argv[], char *env[]) {
         if (xcb_connection_has_error(conn))
                 die("Cannot open display\n");
 
+        /* Get the root window */
+        xcb_screen_t *root_screen = xcb_aux_get_screen(conn, screens);
+        root = root_screen->root;
+        root_depth = root_screen->root_depth;
+
         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
@@ -248,6 +323,9 @@ int main(int argc, char *argv[], char *env[]) {
         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;
@@ -255,9 +333,9 @@ int main(int argc, char *argv[], char *env[]) {
         major = XkbMajorVersion;
         minor = XkbMinorVersion;
 
-        int evBase, errBase;
+        int errBase;
 
-        if ((xkbdpy = XkbOpenDisplay(getenv("DISPLAY"), &evBase, &errBase, &major, &minor, &error)) == NULL) {
+        if ((xkbdpy = XkbOpenDisplay(getenv("DISPLAY"), &xkb_event_base, &errBase, &major, &minor, &error)) == NULL) {
                 ELOG("ERROR: XkbOpenDisplay() failed, disabling XKB support\n");
                 xkb_supported = false;
         }
@@ -269,20 +347,22 @@ int main(int argc, char *argv[], char *env[]) {
                 }
 
                 int i1;
-                if (!XkbQueryExtension(xkbdpy,&i1,&evBase,&errBase,&major,&minor)) {
+                if (!XkbQueryExtension(xkbdpy,&i1,&xkb_event_base,&errBase,&major,&minor)) {
                         fprintf(stderr, "XKB not supported by X-server\n");
                         return 1;
                 }
                 /* end of ugliness */
 
-                if (!XkbSelectEvents(xkbdpy, XkbUseCoreKbd, XkbMapNotifyMask, XkbMapNotifyMask)) {
+                if (!XkbSelectEvents(xkbdpy, XkbUseCoreKbd,
+                                     XkbMapNotifyMask | XkbStateNotifyMask,
+                                     XkbMapNotifyMask | XkbStateNotifyMask)) {
                         fprintf(stderr, "Could not set XKB event mask\n");
                         return 1;
                 }
         }
 
         /* Initialize event loop using libev */
-        struct ev_loop *loop = ev_default_loop(0);
+        struct ev_loop *loop = ev_loop_new(0);
         if (loop == NULL)
                 die("Could not initialize libev. Bad LIBEV_FLAGS?\n");
 
@@ -323,9 +403,8 @@ int main(int argc, char *argv[], char *env[]) {
         /* Expose = an Application should redraw itself, in this case it’s our titlebars. */
         xcb_event_set_expose_handler(&evenths, handle_expose_event, NULL);
 
-        /* Key presses/releases are pretty obvious, I think */
+        /* Key presses are pretty obvious, I think */
         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, NULL);
@@ -340,6 +419,9 @@ int main(int argc, char *argv[], char *env[]) {
            it any longer. Usually, the client destroys the window shortly afterwards. */
         xcb_event_set_unmap_notify_handler(&evenths, handle_unmap_notify_event, NULL);
 
+        /* Destroy notify is handled the same as unmap notify */
+        xcb_event_set_destroy_notify_handler(&evenths, handle_destroy_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, NULL);
@@ -364,11 +446,7 @@ int main(int argc, char *argv[], char *env[]) {
         /* 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 */
-        xcb_screen_t *root_screen = xcb_aux_get_screen(conn, screens);
-        root = root_screen->root;
-        root_depth = root_screen->root_depth;
-
+        /* set event mask */
         uint32_t mask = XCB_CW_EVENT_MASK;
         uint32_t values[] = { XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT |
                               XCB_EVENT_MASK_STRUCTURE_NOTIFY |         /* when the user adds a screen (e.g. video
@@ -410,6 +488,9 @@ int main(int argc, char *argv[], char *env[]) {
         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, handle_window_type, NULL);
         /* TODO: In order to comply with EWMH, we have to watch _NET_WM_STRUT_PARTIAL */
@@ -434,7 +515,7 @@ int main(int argc, char *argv[], char *env[]) {
 
         /* Set up the atoms we support */
         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");
+                       ATOM, 32, 16, atoms), "Could not set _NET_SUPPORTED");
         /* Set up the window manager’s name */
         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");
@@ -443,21 +524,23 @@ int main(int argc, char *argv[], char *env[]) {
 
         xcb_get_numlock_mask(conn);
 
-        grab_all_keys(conn);
-
-        /* Autostarting exec-lines */
-        struct Autostart *exec;
-        if (autostart) {
-                TAILQ_FOREACH(exec, &autostarts, autostarts) {
-                        LOG("auto-starting %s\n", exec->command);
-                        start_application(exec->command);
-                }
+        translate_keysyms();
+        grab_all_keys(conn, false);
+
+        int randr_base = -1;
+        if (force_xinerama) {
+                initialize_xinerama(conn);
+        } else {
+                DLOG("Checking for XRandR...\n");
+                initialize_randr(conn, &randr_base);
+
+                if (randr_base != -1)
+                    xcb_event_set_handler(&evenths,
+                                          randr_base + XCB_RANDR_SCREEN_CHANGE_NOTIFY,
+                                          handle_screen_change,
+                                          NULL);
         }
 
-        /* check for Xinerama */
-        DLOG("Checking for Xinerama...\n");
-        initialize_xinerama(conn);
-
         xcb_flush(conn);
 
         /* Get pointer position to see on which screen we’re starting */
@@ -467,14 +550,14 @@ int main(int argc, char *argv[], char *env[]) {
                 return 1;
         }
 
-        i3Screen *screen = get_screen_containing(reply->root_x, reply->root_y);
+        Output *screen = get_output_containing(reply->root_x, reply->root_y);
         if (screen == NULL) {
                 ELOG("ERROR: No screen at %d x %d, starting on the first screen\n",
                     reply->root_x, reply->root_y);
-                screen = TAILQ_FIRST(virtual_screens);
+                screen = get_first_output();
         }
 
-        DLOG("Starting on %d\n", screen->current_workspace);
+        DLOG("Starting on %p\n", screen->current_workspace);
         c_ws = screen->current_workspace;
 
         manage_existing_windows(conn, &prophs, root);
@@ -494,8 +577,24 @@ int main(int argc, char *argv[], char *env[]) {
         /* Handle the events which arrived until now */
         xcb_check_cb(NULL, NULL, 0);
 
+        setup_signal_handler();
+
+        /* Ignore SIGPIPE to survive errors when an IPC client disconnects
+         * while we are sending him a message */
+        signal(SIGPIPE, SIG_IGN);
+
         /* Ungrab the server to receive events and enter libev’s eventloop */
         xcb_ungrab_server(conn);
+
+        /* Autostarting exec-lines */
+        struct Autostart *exec;
+        if (autostart) {
+                TAILQ_FOREACH(exec, &autostarts, autostarts) {
+                        LOG("auto-starting %s\n", exec->command);
+                        start_application(exec->command);
+                }
+        }
+
         ev_loop(loop, 0);
 
         /* not reached */