]> git.sur5r.net Git - i3/i3/blobdiff - i3bar/src/xcb.c
Fix i3bar when using multiple displays (Thanks brimstone)
[i3/i3] / i3bar / src / xcb.c
index e35c435574c69e6406bf964965cfaa9730341b88..afcfaa397420791d68f21928a3f87646ccd4b0ea 100644 (file)
@@ -1,16 +1,21 @@
 /*
- * i3bar - an xcb-based status- and ws-bar for i3
- *
- * © 2010-2011 Axel Wagner and contributors
+ * vim:ts=4:sw=4:expandtab
  *
- * See file LICNSE for license information
+ * i3bar - an xcb-based status- and ws-bar for i3
+ * © 2010-2011 Axel Wagner and contributors (see also: LICENSE)
  *
- * src/xcb.c: Communicating with X
+ * xcb.c: Communicating with X
  *
  */
 #include <xcb/xcb.h>
 #include <xcb/xproto.h>
 #include <xcb/xcb_atom.h>
+#include <xcb/xcb_aux.h>
+
+#ifdef XCB_COMPAT
+#include "xcb_compat.h"
+#endif
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <ev.h>
 #include <errno.h>
 #include <limits.h>
+#include <err.h>
 
 #include <X11/Xlib.h>
 #include <X11/XKBlib.h>
 #include <X11/extensions/XKB.h>
 
 #include "common.h"
-
-#if defined(__APPLE__)
-
-/*
- * Taken from FreeBSD
- * Returns a pointer to a new string which is a duplicate of the
- * string, but only copies at most n characters.
- *
- */
-char *strndup(const char *str, size_t n) {
-    size_t len;
-    char *copy;
-
-    for (len = 0; len < n && str[len]; len++)
-        continue;
-
-    if ((copy = malloc(len + 1)) == NULL)
-        return (NULL);
-    memcpy(copy, str, len);
-    copy[len] = '\0';
-    return (copy);
-}
-
-#endif
+#include "libi3.h"
 
 /* We save the Atoms in an easy to access array, indexed by an enum */
 enum {
@@ -186,21 +169,6 @@ void draw_text(xcb_drawable_t drawable, xcb_gcontext_t ctx, int16_t x, int16_t y
     }
 }
 
-/*
- * Converts a colorstring to a colorpixel as expected from xcb_change_gc.
- * s is assumed to be in the format "rrggbb"
- *
- */
-uint32_t get_colorpixel(const char *s) {
-    char strings[3][3] = { { s[0], s[1], '\0'} ,
-                           { s[2], s[3], '\0'} ,
-                           { s[4], s[5], '\0'} };
-    uint8_t r = strtol(strings[0], NULL, 16);
-    uint8_t g = strtol(strings[1], NULL, 16);
-    uint8_t b = strtol(strings[2], NULL, 16);
-    return (r << 16 | g << 8 | b);
-}
-
 /*
  * Redraws the statusline to the buffer
  *
@@ -213,7 +181,13 @@ void refresh_statusline() {
     }
 
     xcb_char2b_t *text = (xcb_char2b_t*) convert_utf8_to_ucs2(statusline, &glyph_count);
+    uint32_t old_statusline_width = statusline_width;
     statusline_width = predict_text_extents(text, glyph_count);
+    /* If the statusline is bigger than our screen we need to make sure that
+     * the pixmap provides enough space, so re-allocate if the width grew */
+    if (statusline_width > xcb_screen->width_in_pixels &&
+        statusline_width > old_statusline_width)
+        realloc_sl_buffer();
 
     xcb_rectangle_t rect = { 0, 0, xcb_screen->width_in_pixels, font_height };
     xcb_poly_fill_rectangle(xcb_connection, statusline_pm, statusline_clear, 1, &rect);
@@ -267,7 +241,9 @@ void unhide_bars() {
                XCB_CONFIG_WINDOW_HEIGHT |
                XCB_CONFIG_WINDOW_STACK_MODE;
         values[0] = walk->rect.x;
-        values[1] = walk->rect.y + walk->rect.h - font_height - 6;
+        if (config.position == POS_TOP)
+            values[1] = walk->rect.y;
+        else values[1] = walk->rect.y + walk->rect.h - font_height - 6;
         values[2] = walk->rect.w;
         values[3] = font_height + 6;
         values[4] = XCB_STACK_MODE_ABOVE;
@@ -293,16 +269,16 @@ void init_colors(const struct xcb_color_strings_t *new_colors) {
     do { \
         colors.name = get_colorpixel(new_colors->name ? new_colors->name : def); \
     } while  (0)
-    PARSE_COLOR(bar_fg, "FFFFFF");
-    PARSE_COLOR(bar_bg, "000000");
-    PARSE_COLOR(active_ws_fg, "FFFFFF");
-    PARSE_COLOR(active_ws_bg, "480000");
-    PARSE_COLOR(inactive_ws_fg, "FFFFFF");
-    PARSE_COLOR(inactive_ws_bg, "240000");
-    PARSE_COLOR(urgent_ws_fg, "FFFFFF");
-    PARSE_COLOR(urgent_ws_bg, "002400");
-    PARSE_COLOR(focus_ws_fg, "FFFFFF");
-    PARSE_COLOR(focus_ws_bg, "480000");
+    PARSE_COLOR(bar_fg, "#FFFFFF");
+    PARSE_COLOR(bar_bg, "#000000");
+    PARSE_COLOR(active_ws_fg, "#FFFFFF");
+    PARSE_COLOR(active_ws_bg, "#333333");
+    PARSE_COLOR(inactive_ws_fg, "#888888");
+    PARSE_COLOR(inactive_ws_bg, "#222222");
+    PARSE_COLOR(urgent_ws_fg, "#FFFFFF");
+    PARSE_COLOR(urgent_ws_bg, "#900000");
+    PARSE_COLOR(focus_ws_fg, "#FFFFFF");
+    PARSE_COLOR(focus_ws_bg, "#285577");
 #undef PARSE_COLOR
 }
 
@@ -398,6 +374,8 @@ static void configure_trayclients() {
 
         int clients = 0;
         TAILQ_FOREACH_REVERSE(trayclient, output->trayclients, tc_head, tailq) {
+            if (!trayclient->mapped)
+                continue;
             clients++;
 
             DLOG("Configuring tray window %08x to x=%d\n",
@@ -471,13 +449,20 @@ static void handle_client_message(xcb_client_message_event_t* event) {
             }
 
             DLOG("X window %08x requested docking\n", client);
-            i3_output *walk, *output;
+            i3_output *walk, *output = NULL;
             SLIST_FOREACH(walk, outputs, slist) {
                 if (!walk->active)
                     continue;
+                if (config.tray_output &&
+                    strcasecmp(walk->name, config.tray_output) != 0)
+                    continue;
                 DLOG("using output %s\n", walk->name);
                 output = walk;
             }
+            if (output == NULL) {
+                ELOG("No output found\n");
+                return;
+            }
             xcb_reparent_window(xcb_connection,
                                 client,
                                 output->bar,
@@ -497,7 +482,7 @@ static void handle_client_message(xcb_client_message_event_t* event) {
                                  values);
 
             /* send the XEMBED_EMBEDDED_NOTIFY message */
-            void *event = calloc(32, 1);
+            void *event = scalloc(32);
             xcb_client_message_event_t *ev = event;
             ev->response_type = XCB_CLIENT_MESSAGE;
             ev->window = client;
@@ -514,13 +499,20 @@ static void handle_client_message(xcb_client_message_event_t* event) {
                            (char*)ev);
             free(event);
 
+            /* Put the client inside the save set. Upon termination (whether
+             * killed or normal exit does not matter) of i3bar, these clients
+             * will be correctly reparented to their most closest living
+             * ancestor. Without this, tray icons might die when i3bar
+             * exits/crashes. */
+            xcb_change_save_set(xcb_connection, XCB_SET_MODE_INSERT, client);
+
             if (map_it) {
                 DLOG("Mapping dock client\n");
                 xcb_map_window(xcb_connection, client);
             } else {
                 DLOG("Not mapping dock client yet\n");
             }
-            trayclient *tc = malloc(sizeof(trayclient));
+            trayclient *tc = smalloc(sizeof(trayclient));
             tc->win = client;
             tc->mapped = map_it;
             tc->xe_version = xe_version;
@@ -606,8 +598,10 @@ static void handle_property_notify(xcb_property_notify_event_t *event) {
         xcb_get_property_reply_t *xembedr = xcb_get_property_reply(xcb_connection,
                                                                    xembedc,
                                                                    NULL);
-        if (xembedr == NULL || xembedr->length == 0)
+        if (xembedr == NULL || xembedr->length == 0) {
+            DLOG("xembed_info unset\n");
             return;
+        }
 
         DLOG("xembed format = %d, len = %d\n", xembedr->format, xembedr->length);
         uint32_t *xembed = xcb_get_property_value(xembedr);
@@ -619,17 +613,57 @@ static void handle_property_notify(xcb_property_notify_event_t *event) {
             /* need to unmap the window */
             xcb_unmap_window(xcb_connection, trayclient->win);
             trayclient->mapped = map_it;
+            configure_trayclients();
             draw_bars();
         } else if (!trayclient->mapped && map_it) {
             /* need to map the window */
             xcb_map_window(xcb_connection, trayclient->win);
             trayclient->mapped = map_it;
+            configure_trayclients();
             draw_bars();
         }
         free(xembedr);
     }
 }
 
+/*
+ * Handle ConfigureRequests by denying them and sending the client a
+ * ConfigureNotify with its actual size.
+ *
+ */
+static void handle_configure_request(xcb_configure_request_event_t *event) {
+    DLOG("ConfigureRequest for window = %08x\n", event->window);
+
+    trayclient *trayclient;
+    i3_output *output;
+    SLIST_FOREACH(output, outputs, slist) {
+        if (!output->active)
+            continue;
+
+        int clients = 0;
+        TAILQ_FOREACH_REVERSE(trayclient, output->trayclients, tc_head, tailq) {
+            if (!trayclient->mapped)
+                continue;
+            clients++;
+
+            if (trayclient->win != event->window)
+                continue;
+
+            xcb_rectangle_t rect;
+            rect.x = output->rect.w - (clients * (font_height + 2));
+            rect.y = 2;
+            rect.width = font_height;
+            rect.height = font_height;
+
+            DLOG("This is a tray window. x = %d\n", rect.x);
+            fake_configure_notify(xcb_connection, rect, event->window, 0);
+            return;
+        }
+    }
+
+    DLOG("WARNING: Could not find corresponding tray window.\n");
+}
+
 /*
  * This function is called immediately before the main loop locks. We flush xcb
  * then (and only then)
@@ -647,34 +681,43 @@ void xcb_prep_cb(struct ev_loop *loop, ev_prepare *watcher, int revents) {
  */
 void xcb_chk_cb(struct ev_loop *loop, ev_check *watcher, int revents) {
     xcb_generic_event_t *event;
-    while ((event = xcb_poll_for_event(xcb_connection)) == NULL) {
-        return;
+
+    if (xcb_connection_has_error(xcb_connection)) {
+        ELOG("X11 connection was closed unexpectedly - maybe your X server terminated / crashed?\n");
+        exit(1);
     }
 
-    switch (event->response_type & ~0x80) {
-        case XCB_EXPOSE:
-            /* Expose-events happen, when the window needs to be redrawn */
-            redraw_bars();
-            break;
-        case XCB_BUTTON_PRESS:
-            /* Button-press-events are mouse-buttons clicked on one of our bars */
-            handle_button((xcb_button_press_event_t*) event);
-            break;
-        case XCB_CLIENT_MESSAGE:
-            /* Client messages are used for client-to-client communication, for
-             * example system tray widgets talk to us directly via client messages. */
-            handle_client_message((xcb_client_message_event_t*) event);
-            break;
-        case XCB_UNMAP_NOTIFY:
-            /* UnmapNotifies are received when a tray window unmaps itself */
-            handle_unmap_notify((xcb_unmap_notify_event_t*) event);
-            break;
-        case XCB_PROPERTY_NOTIFY:
-            /* PropertyNotify */
-            handle_property_notify((xcb_property_notify_event_t*) event);
-            break;
+    while ((event = xcb_poll_for_event(xcb_connection)) != NULL) {
+        switch (event->response_type & ~0x80) {
+            case XCB_EXPOSE:
+                /* Expose-events happen, when the window needs to be redrawn */
+                redraw_bars();
+                break;
+            case XCB_BUTTON_PRESS:
+                /* Button-press-events are mouse-buttons clicked on one of our bars */
+                handle_button((xcb_button_press_event_t*) event);
+                break;
+            case XCB_CLIENT_MESSAGE:
+                /* Client messages are used for client-to-client communication, for
+                 * example system tray widgets talk to us directly via client messages. */
+                handle_client_message((xcb_client_message_event_t*) event);
+                break;
+            case XCB_UNMAP_NOTIFY:
+            case XCB_DESTROY_NOTIFY:
+                /* UnmapNotifies are received when a tray window unmaps itself */
+                handle_unmap_notify((xcb_unmap_notify_event_t*) event);
+                break;
+            case XCB_PROPERTY_NOTIFY:
+                /* PropertyNotify */
+                handle_property_notify((xcb_property_notify_event_t*) event);
+                break;
+            case XCB_CONFIGURE_REQUEST:
+                /* ConfigureRequest, sent by a tray child */
+                handle_configure_request((xcb_configure_request_event_t*) event);
+                break;
+        }
+        free(event);
     }
-    FREE(event);
 }
 
 /*
@@ -725,10 +768,11 @@ void xkb_io_cb(struct ev_loop *loop, ev_io *watcher, int revents) {
 }
 
 /*
- * Initialize xcb and use the specified fontname for text-rendering
+ * Early initialization of the connection to X11: Everything which does not
+ * depend on 'config'.
  *
  */
-char *init_xcb(char *fontname) {
+char *init_xcb_early() {
     /* FIXME: xcb_connect leaks Memory */
     xcb_connection = xcb_connect(NULL, &screen);
     if (xcb_connection_has_error(xcb_connection)) {
@@ -741,69 +785,13 @@ char *init_xcb(char *fontname) {
     #define ATOM_DO(name) atom_cookies[name] = xcb_intern_atom(xcb_connection, 0, strlen(#name), #name);
     #include "xcb_atoms.def"
 
-    xcb_screen = xcb_setup_roots_iterator(xcb_get_setup(xcb_connection)).data;
+    xcb_screen = xcb_aux_get_screen(xcb_connection, screen);
     xcb_root = xcb_screen->root;
 
-    /* We load and allocate the font */
-    xcb_font = xcb_generate_id(xcb_connection);
-    xcb_void_cookie_t open_font_cookie;
-    open_font_cookie = xcb_open_font_checked(xcb_connection,
-                                             xcb_font,
-                                             strlen(fontname),
-                                             fontname);
-
-    /* We need to save info about the font, because we need the font's height and
-     * information about the width of characters */
-    xcb_query_font_cookie_t query_font_cookie;
-    query_font_cookie = xcb_query_font(xcb_connection,
-                                       xcb_font);
-
-    /* To grab modifiers without blocking other applications from receiving key-events
-     * involving that modifier, we sadly have to use xkb which is not yet fully supported
-     * in xcb */
-    if (config.hide_on_modifier) {
-        int xkb_major, xkb_minor, xkb_errbase, xkb_err;
-        xkb_major = XkbMajorVersion;
-        xkb_minor = XkbMinorVersion;
-
-        xkb_dpy = XkbOpenDisplay(NULL,
-                                 &xkb_event_base,
-                                 &xkb_errbase,
-                                 &xkb_major,
-                                 &xkb_minor,
-                                 &xkb_err);
-
-        if (xkb_dpy == NULL) {
-            ELOG("No XKB!\n");
-            exit(EXIT_FAILURE);
-        }
-
-        if (fcntl(ConnectionNumber(xkb_dpy), F_SETFD, FD_CLOEXEC) == -1) {
-            ELOG("Could not set FD_CLOEXEC on xkbdpy: %s\n", strerror(errno));
-            exit(EXIT_FAILURE);
-        }
-
-        int i1;
-        if (!XkbQueryExtension(xkb_dpy, &i1, &xkb_event_base, &xkb_errbase, &xkb_major, &xkb_minor)) {
-            ELOG("XKB not supported by X-server!\n");
-            exit(EXIT_FAILURE);
-        }
-
-        if (!XkbSelectEvents(xkb_dpy, XkbUseCoreKbd, XkbStateNotifyMask, XkbStateNotifyMask)) {
-            ELOG("Could not grab Key!\n");
-            exit(EXIT_FAILURE);
-        }
-
-        xkb_io = malloc(sizeof(ev_io));
-        ev_io_init(xkb_io, &xkb_io_cb, ConnectionNumber(xkb_dpy), EV_READ);
-        ev_io_start(main_loop, xkb_io);
-        XFlush(xkb_dpy);
-    }
-
     /* We draw the statusline to a seperate pixmap, because it looks the same on all bars and
      * this way, we can choose to crop it */
     uint32_t mask = XCB_GC_FOREGROUND;
-    uint32_t vals[3] = { colors.bar_bg, colors.bar_bg, xcb_font };
+    uint32_t vals[] = { colors.bar_bg, colors.bar_bg };
 
     statusline_clear = xcb_generate_id(xcb_connection);
     xcb_void_cookie_t clear_ctx_cookie = xcb_create_gc_checked(xcb_connection,
@@ -812,7 +800,7 @@ char *init_xcb(char *fontname) {
                                                                mask,
                                                                vals);
 
-    mask |= XCB_GC_BACKGROUND | XCB_GC_FONT;
+    mask |= XCB_GC_BACKGROUND;
     vals[0] = colors.bar_fg;
     statusline_ctx = xcb_generate_id(xcb_connection);
     xcb_void_cookie_t sl_ctx_cookie = xcb_create_gc_checked(xcb_connection,
@@ -831,9 +819,9 @@ char *init_xcb(char *fontname) {
 
 
     /* The various Watchers to communicate with xcb */
-    xcb_io = malloc(sizeof(ev_io));
-    xcb_prep = malloc(sizeof(ev_prepare));
-    xcb_chk = malloc(sizeof(ev_check));
+    xcb_io = smalloc(sizeof(ev_io));
+    xcb_prep = smalloc(sizeof(ev_prepare));
+    xcb_chk = smalloc(sizeof(ev_check));
 
     ev_io_init(xcb_io, &xcb_io_cb, xcb_get_file_descriptor(xcb_connection), EV_READ);
     ev_prepare_init(xcb_prep, &xcb_prep_cb);
@@ -866,6 +854,90 @@ char *init_xcb(char *fontname) {
         }
     }
 
+
+    if (xcb_request_failed(sl_pm_cookie, "Could not allocate statusline-buffer") ||
+        xcb_request_failed(clear_ctx_cookie, "Could not allocate statusline-buffer-clearcontext") ||
+        xcb_request_failed(sl_ctx_cookie, "Could not allocate statusline-buffer-context")) {
+        exit(EXIT_FAILURE);
+    }
+
+    return path;
+}
+
+/*
+ * Initialization which depends on 'config' being usable. Called after the
+ * configuration has arrived.
+ *
+ */
+void init_xcb_late(char *fontname) {
+    if (fontname == NULL) {
+        /* XXX: font fallback to 'misc' like i3 does it would be good. */
+        fontname = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1";
+    }
+
+    /* We load and allocate the font */
+    xcb_font = xcb_generate_id(xcb_connection);
+    xcb_void_cookie_t open_font_cookie;
+    open_font_cookie = xcb_open_font_checked(xcb_connection,
+                                             xcb_font,
+                                             strlen(fontname),
+                                             fontname);
+
+    /* We need to save info about the font, because we need the font's height and
+     * information about the width of characters */
+    xcb_query_font_cookie_t query_font_cookie;
+    query_font_cookie = xcb_query_font(xcb_connection,
+                                       xcb_font);
+
+    xcb_change_gc(xcb_connection,
+                  statusline_ctx,
+                  XCB_GC_FONT,
+                  (uint32_t[]){ xcb_font });
+
+    xcb_flush(xcb_connection);
+
+    /* To grab modifiers without blocking other applications from receiving key-events
+     * involving that modifier, we sadly have to use xkb which is not yet fully supported
+     * in xcb */
+    if (config.hide_on_modifier) {
+        int xkb_major, xkb_minor, xkb_errbase, xkb_err;
+        xkb_major = XkbMajorVersion;
+        xkb_minor = XkbMinorVersion;
+
+        xkb_dpy = XkbOpenDisplay(NULL,
+                                 &xkb_event_base,
+                                 &xkb_errbase,
+                                 &xkb_major,
+                                 &xkb_minor,
+                                 &xkb_err);
+
+        if (xkb_dpy == NULL) {
+            ELOG("No XKB!\n");
+            exit(EXIT_FAILURE);
+        }
+
+        if (fcntl(ConnectionNumber(xkb_dpy), F_SETFD, FD_CLOEXEC) == -1) {
+            ELOG("Could not set FD_CLOEXEC on xkbdpy: %s\n", strerror(errno));
+            exit(EXIT_FAILURE);
+        }
+
+        int i1;
+        if (!XkbQueryExtension(xkb_dpy, &i1, &xkb_event_base, &xkb_errbase, &xkb_major, &xkb_minor)) {
+            ELOG("XKB not supported by X-server!\n");
+            exit(EXIT_FAILURE);
+        }
+
+        if (!XkbSelectEvents(xkb_dpy, XkbUseCoreKbd, XkbStateNotifyMask, XkbStateNotifyMask)) {
+            ELOG("Could not grab Key!\n");
+            exit(EXIT_FAILURE);
+        }
+
+        xkb_io = smalloc(sizeof(ev_io));
+        ev_io_init(xkb_io, &xkb_io_cb, ConnectionNumber(xkb_dpy), EV_READ);
+        ev_io_start(main_loop, xkb_io);
+        XFlush(xkb_dpy);
+    }
+
     /* Now we save the font-infos */
     font_info = xcb_query_font_reply(xcb_connection,
                                      query_font_cookie,
@@ -884,14 +956,6 @@ char *init_xcb(char *fontname) {
     }
 
     DLOG("Calculated Font-height: %d\n", font_height);
-
-    if (xcb_request_failed(sl_pm_cookie, "Could not allocate statusline-buffer") ||
-        xcb_request_failed(clear_ctx_cookie, "Could not allocate statusline-buffer-clearcontext") ||
-        xcb_request_failed(sl_ctx_cookie, "Could not allocate statusline-buffer-context")) {
-        exit(EXIT_FAILURE);
-    }
-
-    return path;
 }
 
 /*
@@ -901,6 +965,7 @@ char *init_xcb(char *fontname) {
  *
  */
 void init_tray() {
+    DLOG("Initializing system tray functionality\n");
     /* request the tray manager atom for the X11 display we are running on */
     char atomname[strlen("_NET_SYSTEM_TRAY_S") + 11];
     snprintf(atomname, strlen("_NET_SYSTEM_TRAY_S") + 11, "_NET_SYSTEM_TRAY_S%d", screen);
@@ -930,7 +995,7 @@ void init_tray() {
                         XCB_PROP_MODE_REPLACE,
                         selwin,
                         atoms[_NET_SYSTEM_TRAY_ORIENTATION],
-                        atoms[CARDINAL],
+                        XCB_ATOM_CARDINAL,
                         32,
                         1,
                         &orientation);
@@ -965,7 +1030,7 @@ void init_tray() {
     }
 
     /* Inform clients waiting for a new _NET_SYSTEM_TRAY that we are here */
-    void *event = calloc(32, 1);
+    void *event = scalloc(32);
     xcb_client_message_event_t *ev = event;
     ev->response_type = XCB_CLIENT_MESSAGE;
     ev->window = xcb_root;
@@ -990,15 +1055,27 @@ void init_tray() {
  */
 void clean_xcb() {
     i3_output *o_walk;
+    trayclient *trayclient;
     free_workspaces();
     SLIST_FOREACH(o_walk, outputs, slist) {
+        TAILQ_FOREACH(trayclient, o_walk->trayclients, tailq) {
+            /* Unmap, then reparent (to root) the tray client windows */
+            xcb_unmap_window(xcb_connection, trayclient->win);
+            xcb_reparent_window(xcb_connection,
+                                trayclient->win,
+                                xcb_root,
+                                0,
+                                0);
+        }
         destroy_window(o_walk);
+        FREE(o_walk->trayclients);
         FREE(o_walk->workspaces);
         FREE(o_walk->name);
     }
     FREE_SLIST(outputs, i3_output);
     FREE(outputs);
 
+    xcb_flush(xcb_connection);
     xcb_disconnect(xcb_connection);
 
     ev_check_stop(main_loop, xcb_chk);
@@ -1049,13 +1126,15 @@ void destroy_window(i3_output *output) {
  *
  */
 void realloc_sl_buffer() {
+    DLOG("Re-allocating statusline-buffer, statusline_width = %d, xcb_screen->width_in_pixels = %d\n",
+         statusline_width, xcb_screen->width_in_pixels);
     xcb_free_pixmap(xcb_connection, statusline_pm);
     statusline_pm = xcb_generate_id(xcb_connection);
     xcb_void_cookie_t sl_pm_cookie = xcb_create_pixmap_checked(xcb_connection,
                                                                xcb_screen->root_depth,
                                                                statusline_pm,
                                                                xcb_root,
-                                                               xcb_screen->width_in_pixels,
+                                                               MAX(xcb_screen->width_in_pixels, statusline_width),
                                                                xcb_screen->height_in_pixels);
 
     uint32_t mask = XCB_GC_FOREGROUND;
@@ -1093,6 +1172,7 @@ void realloc_sl_buffer() {
 void reconfig_windows() {
     uint32_t mask;
     uint32_t values[5];
+    static bool tray_configured = false;
 
     i3_output *walk;
     SLIST_FOREACH(walk, outputs, slist) {
@@ -1106,9 +1186,6 @@ void reconfig_windows() {
         if (walk->bar == XCB_NONE) {
             DLOG("Creating Window for output %s\n", walk->name);
 
-            /* TODO: only call init_tray() if the tray is configured for this output */
-            init_tray();
-
             walk->bar = xcb_generate_id(xcb_connection);
             walk->buffer = xcb_generate_id(xcb_connection);
             mask = XCB_CW_BACK_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK;
@@ -1116,8 +1193,14 @@ void reconfig_windows() {
             values[0] = colors.bar_bg;
             /* If hide_on_modifier is set, i3 is not supposed to manage our bar-windows */
             values[1] = config.hide_on_modifier;
-            /* The events we want to receive */
-            values[2] = XCB_EVENT_MASK_EXPOSURE;
+            /* We enable the following EventMask fields:
+             * EXPOSURE, to get expose events (we have to re-draw then)
+             * SUBSTRUCTURE_REDIRECT, to get ConfigureRequests when the tray
+             *                        child windows use ConfigureWindow
+             * BUTTON_PRESS, to handle clicks on the workspace buttons
+             * */
+            values[2] = XCB_EVENT_MASK_EXPOSURE |
+                        XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT;
             if (!config.disable_ws) {
                 values[2] |= XCB_EVENT_MASK_BUTTON_PRESS;
             }
@@ -1141,6 +1224,31 @@ void reconfig_windows() {
                                                                     walk->rect.w,
                                                                     walk->rect.h);
 
+            /* Set the WM_CLASS and WM_NAME (we don't need UTF-8) atoms */
+            xcb_void_cookie_t class_cookie;
+            class_cookie = xcb_change_property(xcb_connection,
+                                               XCB_PROP_MODE_REPLACE,
+                                               walk->bar,
+                                               XCB_ATOM_WM_CLASS,
+                                               XCB_ATOM_STRING,
+                                               8,
+                                               (strlen("i3bar") + 1) * 2,
+                                               "i3bar\0i3bar\0");
+
+            char *name;
+            if (asprintf(&name, "i3bar for output %s", walk->name) == -1)
+                err(EXIT_FAILURE, "asprintf()");
+            xcb_void_cookie_t name_cookie;
+            name_cookie = xcb_change_property(xcb_connection,
+                                              XCB_PROP_MODE_REPLACE,
+                                              walk->bar,
+                                              XCB_ATOM_WM_NAME,
+                                              XCB_ATOM_STRING,
+                                              8,
+                                              strlen(name),
+                                              name);
+            free(name);
+
             /* We want dock-windows (for now). When override_redirect is set, i3 is ignoring
              * this one */
             xcb_void_cookie_t dock_cookie = xcb_change_property(xcb_connection,
@@ -1171,15 +1279,15 @@ void reconfig_windows() {
                 uint32_t bottom_start_x;
                 uint32_t bottom_end_x;
             } __attribute__((__packed__)) strut_partial = {0,};
-            switch (config.dockpos) {
-                case DOCKPOS_NONE:
+            switch (config.position) {
+                case POS_NONE:
                     break;
-                case DOCKPOS_TOP:
+                case POS_TOP:
                     strut_partial.top = font_height + 6;
                     strut_partial.top_start_x = walk->rect.x;
                     strut_partial.top_end_x = walk->rect.x + walk->rect.w;
                     break;
-                case DOCKPOS_BOT:
+                case POS_BOT:
                     strut_partial.bottom = font_height + 6;
                     strut_partial.bottom_start_x = walk->rect.x;
                     strut_partial.bottom_end_x = walk->rect.x + walk->rect.w;
@@ -1214,11 +1322,20 @@ void reconfig_windows() {
             if (xcb_request_failed(win_cookie,   "Could not create window") ||
                 xcb_request_failed(pm_cookie,    "Could not create pixmap") ||
                 xcb_request_failed(dock_cookie,  "Could not set dock mode") ||
+                xcb_request_failed(class_cookie, "Could not set WM_CLASS")  ||
+                xcb_request_failed(name_cookie,  "Could not set WM_NAME")   ||
                 xcb_request_failed(strut_cookie, "Could not set strut")     ||
                 xcb_request_failed(gc_cookie,    "Could not create graphical context") ||
                 (!config.hide_on_modifier && xcb_request_failed(map_cookie, "Could not map window"))) {
                 exit(EXIT_FAILURE);
             }
+
+            if (!tray_configured &&
+                (!config.tray_output ||
+                 strcasecmp("none", config.tray_output) != 0)) {
+                init_tray();
+                tray_configured = true;
+            }
         } else {
             /* We already have a bar, so we just reconfigure it */
             mask = XCB_CONFIG_WINDOW_X |
@@ -1306,7 +1423,7 @@ void draw_bars() {
                 /* We assume the tray icons are quadratic (we use the font
                  * *height* as *width* of the icons) because we configured them
                  * like this. */
-                traypx += font_height;
+                traypx += font_height + 2;
             }
             /* Add 2px of padding if there are any tray icons */
             if (traypx > 0)