Merge branch 'backport' into work
[dana/openbox.git] / openbox / screen.c
index 93ec57f..09d5003 100644 (file)
 #include "debug.h"
 #include "openbox.h"
 #include "dock.h"
-#include "xerror.h"
-#include "prop.h"
 #include "grab.h"
 #include "startupnotify.h"
 #include "moveresize.h"
 #include "config.h"
-#include "mainloop.h"
 #include "screen.h"
 #include "client.h"
 #include "session.h"
 #include "event.h"
 #include "focus.h"
 #include "popup.h"
-#include "extensions.h"
+#include "hooks.h"
 #include "render/render.h"
 #include "gettext.h"
+#include "obt/display.h"
+#include "obt/prop.h"
+#include "obt/mainloop.h"
 
 #include <X11/Xlib.h>
 #ifdef HAVE_UNISTD_H
                         ButtonPressMask | ButtonReleaseMask)
 
 static gboolean screen_validate_layout(ObDesktopLayout *l);
-static gboolean replace_wm();
-static void     screen_tell_ksplash();
-static void     screen_fallback_focus();
-
-guint    screen_num_desktops;
-guint    screen_num_monitors;
-guint    screen_desktop;
-guint    screen_last_desktop;
-Size     screen_physical_size;
-gboolean screen_showing_desktop;
+static gboolean replace_wm(void);
+static void     screen_tell_ksplash(void);
+static void     screen_fallback_focus(void);
+
+guint           screen_num_desktops;
+guint           screen_num_monitors;
+guint           screen_desktop;
+guint           screen_last_desktop;
+gboolean        screen_showing_desktop;
 ObDesktopLayout screen_desktop_layout;
-gchar  **screen_desktop_names;
-Window   screen_support_win;
-Time     screen_desktop_user_time = CurrentTime;
-
-/*! An array of desktops, holding array of areas per monitor */
+gchar         **screen_desktop_names;
+Window          screen_support_win;
+Time            screen_desktop_user_time = CurrentTime;
+
+static Size     screen_physical_size;
+static guint    screen_old_desktop;
+static gboolean screen_desktop_timeout = TRUE;
+/*! An array of desktops, holding an array of areas per monitor */
 static Rect  *monitor_area = NULL;
 /*! An array of desktops, holding an array of struts */
 static GSList *struts_top = NULL;
@@ -75,9 +77,13 @@ static GSList *struts_left = NULL;
 static GSList *struts_right = NULL;
 static GSList *struts_bottom = NULL;
 
-static ObPagerPopup *desktop_popup;
+static ObPagerPopup **desktop_popup;
+
+/*! The number of microseconds that you need to be on a desktop before it will
+  replace the remembered "last desktop" */
+#define REMEMBER_LAST_DESKTOP_TIME 750000
 
-static gboolean replace_wm()
+static gboolean replace_wm(void)
 {
     gchar *wm_sn;
     Atom wm_sn_atom;
@@ -85,10 +91,10 @@ static gboolean replace_wm()
     Time timestamp;
 
     wm_sn = g_strdup_printf("WM_S%d", ob_screen);
-    wm_sn_atom = XInternAtom(ob_display, wm_sn, FALSE);
+    wm_sn_atom = XInternAtom(obt_display, wm_sn, FALSE);
     g_free(wm_sn);
 
-    current_wm_sn_owner = XGetSelectionOwner(ob_display, wm_sn_atom);
+    current_wm_sn_owner = XGetSelectionOwner(obt_display, wm_sn_atom);
     if (current_wm_sn_owner == screen_support_win)
         current_wm_sn_owner = None;
     if (current_wm_sn_owner) {
@@ -97,24 +103,23 @@ static gboolean replace_wm()
                       ob_screen);
             return FALSE;
         }
-        xerror_set_ignore(TRUE);
-        xerror_occured = FALSE;
+        obt_display_ignore_errors(TRUE);
 
         /* We want to find out when the current selection owner dies */
-        XSelectInput(ob_display, current_wm_sn_owner, StructureNotifyMask);
-        XSync(ob_display, FALSE);
+        XSelectInput(obt_display, current_wm_sn_owner, StructureNotifyMask);
+        XSync(obt_display, FALSE);
 
-        xerror_set_ignore(FALSE);
-        if (xerror_occured)
+        obt_display_ignore_errors(FALSE);
+        if (obt_display_error_occured)
             current_wm_sn_owner = None;
     }
 
     timestamp = event_get_server_time();
 
-    XSetSelectionOwner(ob_display, wm_sn_atom, screen_support_win,
+    XSetSelectionOwner(obt_display, wm_sn_atom, screen_support_win,
                        timestamp);
 
-    if (XGetSelectionOwner(ob_display, wm_sn_atom) != screen_support_win) {
+    if (XGetSelectionOwner(obt_display, wm_sn_atom) != screen_support_win) {
         g_message(_("Could not acquire window manager selection on screen %d"),
                   ob_screen);
         return FALSE;
@@ -127,7 +132,7 @@ static gboolean replace_wm()
       const gulong timeout = G_USEC_PER_SEC * 15; /* wait for 15s max */
 
       while (wait < timeout) {
-          if (XCheckWindowEvent(ob_display, current_wm_sn_owner,
+          if (XCheckWindowEvent(obt_display, current_wm_sn_owner,
                                 StructureNotifyMask, &event) &&
               event.type == DestroyNotify)
               break;
@@ -142,49 +147,45 @@ static gboolean replace_wm()
     }
 
     /* Send client message indicating that we are now the WM */
-    prop_message(RootWindow(ob_display, ob_screen), prop_atoms.manager,
-                 timestamp, wm_sn_atom, screen_support_win, 0,
-                 SubstructureNotifyMask);
+    obt_prop_message(ob_screen, obt_root(ob_screen), OBT_PROP_ATOM(MANAGER),
+                     timestamp, wm_sn_atom, screen_support_win, 0, 0,
+                     SubstructureNotifyMask);
 
     return TRUE;
 }
 
-gboolean screen_annex()
+gboolean screen_annex(void)
 {
     XSetWindowAttributes attrib;
     pid_t pid;
     gint i, num_support;
-    Atom *prop_atoms_start, *wm_supported_pos;
     gulong *supported;
 
     /* create the netwm support window */
     attrib.override_redirect = TRUE;
     attrib.event_mask = PropertyChangeMask;
-    screen_support_win = XCreateWindow(ob_display,
-                                       RootWindow(ob_display, ob_screen),
+    screen_support_win = XCreateWindow(obt_display, obt_root(ob_screen),
                                        -100, -100, 1, 1, 0,
                                        CopyFromParent, InputOutput,
                                        CopyFromParent,
                                        CWEventMask | CWOverrideRedirect,
                                        &attrib);
-    XMapWindow(ob_display, screen_support_win);
-    XLowerWindow(ob_display, screen_support_win);
+    XMapWindow(obt_display, screen_support_win);
+    XLowerWindow(obt_display, screen_support_win);
 
     if (!replace_wm()) {
-        XDestroyWindow(ob_display, screen_support_win);
+        XDestroyWindow(obt_display, screen_support_win);
         return FALSE;
     }
 
-    xerror_set_ignore(TRUE);
-    xerror_occured = FALSE;
-    XSelectInput(ob_display, RootWindow(ob_display, ob_screen),
-                 ROOT_EVENTMASK);
-    xerror_set_ignore(FALSE);
-    if (xerror_occured) {
+    obt_display_ignore_errors(TRUE);
+    XSelectInput(obt_display, obt_root(ob_screen), ROOT_EVENTMASK);
+    obt_display_ignore_errors(FALSE);
+    if (obt_display_error_occured) {
         g_message(_("A window manager is already running on screen %d"),
                   ob_screen);
 
-        XDestroyWindow(ob_display, screen_support_win);
+        XDestroyWindow(obt_display, screen_support_win);
         return FALSE;
     }
 
@@ -192,111 +193,110 @@ gboolean screen_annex()
 
     /* set the OPENBOX_PID hint */
     pid = getpid();
-    PROP_SET32(RootWindow(ob_display, ob_screen),
-               openbox_pid, cardinal, pid);
+    OBT_PROP_SET32(obt_root(ob_screen), OPENBOX_PID, CARDINAL, pid);
 
     /* set supporting window */
-    PROP_SET32(RootWindow(ob_display, ob_screen),
-               net_supporting_wm_check, window, screen_support_win);
+    OBT_PROP_SET32(obt_root(ob_screen),
+                   NET_SUPPORTING_WM_CHECK, WINDOW, screen_support_win);
 
     /* set properties on the supporting window */
-    PROP_SETS(screen_support_win, net_wm_name, "Openbox");
-    PROP_SET32(screen_support_win, net_supporting_wm_check,
-               window, screen_support_win);
+    OBT_PROP_SETS(screen_support_win, NET_WM_NAME, utf8, "Openbox");
+    OBT_PROP_SET32(screen_support_win, NET_SUPPORTING_WM_CHECK,
+                   WINDOW, screen_support_win);
 
     /* set the _NET_SUPPORTED_ATOMS hint */
 
-    /* this is all the atoms after net_supported in the prop_atoms struct */
-    prop_atoms_start = (Atom*)&prop_atoms;
-    wm_supported_pos = (Atom*)&(prop_atoms.net_supported);
-    num_support = sizeof(prop_atoms) / sizeof(Atom) -
-        (wm_supported_pos - prop_atoms_start) - 1;
+    /* this is all the atoms after NET_SUPPORTED in the ObtPropAtoms enum */
+    num_support = OBT_PROP_NUM_ATOMS - OBT_PROP_NET_SUPPORTED - 1;
     i = 0;
     supported = g_new(gulong, num_support);
-    supported[i++] = prop_atoms.net_supporting_wm_check;
-    supported[i++] = prop_atoms.net_wm_full_placement;
-    supported[i++] = prop_atoms.net_current_desktop;
-    supported[i++] = prop_atoms.net_number_of_desktops;
-    supported[i++] = prop_atoms.net_desktop_geometry;
-    supported[i++] = prop_atoms.net_desktop_viewport;
-    supported[i++] = prop_atoms.net_active_window;
-    supported[i++] = prop_atoms.net_workarea;
-    supported[i++] = prop_atoms.net_client_list;
-    supported[i++] = prop_atoms.net_client_list_stacking;
-    supported[i++] = prop_atoms.net_desktop_names;
-    supported[i++] = prop_atoms.net_close_window;
-    supported[i++] = prop_atoms.net_desktop_layout;
-    supported[i++] = prop_atoms.net_showing_desktop;
-    supported[i++] = prop_atoms.net_wm_name;
-    supported[i++] = prop_atoms.net_wm_visible_name;
-    supported[i++] = prop_atoms.net_wm_icon_name;
-    supported[i++] = prop_atoms.net_wm_visible_icon_name;
-    supported[i++] = prop_atoms.net_wm_desktop;
-    supported[i++] = prop_atoms.net_wm_strut;
-    supported[i++] = prop_atoms.net_wm_strut_partial;
-    supported[i++] = prop_atoms.net_wm_icon;
-    supported[i++] = prop_atoms.net_wm_icon_geometry;
-    supported[i++] = prop_atoms.net_wm_window_type;
-    supported[i++] = prop_atoms.net_wm_window_type_desktop;
-    supported[i++] = prop_atoms.net_wm_window_type_dock;
-    supported[i++] = prop_atoms.net_wm_window_type_toolbar;
-    supported[i++] = prop_atoms.net_wm_window_type_menu;
-    supported[i++] = prop_atoms.net_wm_window_type_utility;
-    supported[i++] = prop_atoms.net_wm_window_type_splash;
-    supported[i++] = prop_atoms.net_wm_window_type_dialog;
-    supported[i++] = prop_atoms.net_wm_window_type_normal;
-    supported[i++] = prop_atoms.net_wm_allowed_actions;
-    supported[i++] = prop_atoms.net_wm_action_move;
-    supported[i++] = prop_atoms.net_wm_action_resize;
-    supported[i++] = prop_atoms.net_wm_action_minimize;
-    supported[i++] = prop_atoms.net_wm_action_shade;
-    supported[i++] = prop_atoms.net_wm_action_maximize_horz;
-    supported[i++] = prop_atoms.net_wm_action_maximize_vert;
-    supported[i++] = prop_atoms.net_wm_action_fullscreen;
-    supported[i++] = prop_atoms.net_wm_action_change_desktop;
-    supported[i++] = prop_atoms.net_wm_action_close;
-    supported[i++] = prop_atoms.net_wm_action_above;
-    supported[i++] = prop_atoms.net_wm_action_below;
-    supported[i++] = prop_atoms.net_wm_state;
-    supported[i++] = prop_atoms.net_wm_state_modal;
-    supported[i++] = prop_atoms.net_wm_state_maximized_vert;
-    supported[i++] = prop_atoms.net_wm_state_maximized_horz;
-    supported[i++] = prop_atoms.net_wm_state_shaded;
-    supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
-    supported[i++] = prop_atoms.net_wm_state_skip_pager;
-    supported[i++] = prop_atoms.net_wm_state_hidden;
-    supported[i++] = prop_atoms.net_wm_state_fullscreen;
-    supported[i++] = prop_atoms.net_wm_state_above;
-    supported[i++] = prop_atoms.net_wm_state_below;
-    supported[i++] = prop_atoms.net_wm_state_demands_attention;
-    supported[i++] = prop_atoms.net_moveresize_window;
-    supported[i++] = prop_atoms.net_wm_moveresize;
-    supported[i++] = prop_atoms.net_wm_user_time;
+    supported[i++] = OBT_PROP_ATOM(NET_SUPPORTING_WM_CHECK);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_FULL_PLACEMENT);
+    supported[i++] = OBT_PROP_ATOM(NET_CURRENT_DESKTOP);
+    supported[i++] = OBT_PROP_ATOM(NET_NUMBER_OF_DESKTOPS);
+    supported[i++] = OBT_PROP_ATOM(NET_DESKTOP_GEOMETRY);
+    supported[i++] = OBT_PROP_ATOM(NET_DESKTOP_VIEWPORT);
+    supported[i++] = OBT_PROP_ATOM(NET_ACTIVE_WINDOW);
+    supported[i++] = OBT_PROP_ATOM(NET_WORKAREA);
+    supported[i++] = OBT_PROP_ATOM(NET_CLIENT_LIST);
+    supported[i++] = OBT_PROP_ATOM(NET_CLIENT_LIST_STACKING);
+    supported[i++] = OBT_PROP_ATOM(NET_DESKTOP_NAMES);
+    supported[i++] = OBT_PROP_ATOM(NET_CLOSE_WINDOW);
+    supported[i++] = OBT_PROP_ATOM(NET_DESKTOP_LAYOUT);
+    supported[i++] = OBT_PROP_ATOM(NET_SHOWING_DESKTOP);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_NAME);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_VISIBLE_NAME);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_ICON_NAME);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_VISIBLE_ICON_NAME);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_DESKTOP);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_STRUT);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_STRUT_PARTIAL);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_ICON);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_ICON_GEOMETRY);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_WINDOW_TYPE);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_WINDOW_TYPE_DESKTOP);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_WINDOW_TYPE_DOCK);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_WINDOW_TYPE_TOOLBAR);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_WINDOW_TYPE_MENU);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_WINDOW_TYPE_UTILITY);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_WINDOW_TYPE_SPLASH);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_WINDOW_TYPE_DIALOG);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_WINDOW_TYPE_NORMAL);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_ALLOWED_ACTIONS);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_ACTION_MOVE);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_ACTION_RESIZE);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_ACTION_MINIMIZE);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_ACTION_SHADE);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_ACTION_MAXIMIZE_HORZ);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_ACTION_MAXIMIZE_VERT);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_ACTION_FULLSCREEN);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_ACTION_CHANGE_DESKTOP);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_ACTION_CLOSE);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_ACTION_ABOVE);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_ACTION_BELOW);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_STATE);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_STATE_MODAL);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_STATE_MAXIMIZED_VERT);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_STATE_MAXIMIZED_HORZ);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_STATE_SHADED);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_STATE_SKIP_TASKBAR);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_STATE_SKIP_PAGER);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_STATE_HIDDEN);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_STATE_FULLSCREEN);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_STATE_ABOVE);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_STATE_BELOW);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_STATE_DEMANDS_ATTENTION);
+    supported[i++] = OBT_PROP_ATOM(NET_MOVERESIZE_WINDOW);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_MOVERESIZE);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_USER_TIME);
 /*
-    supported[i++] = prop_atoms.net_wm_user_time_window;
+    supported[i++] = OBT_PROP_ATOM(NET_WM_USER_TIME_WINDOW);
 */
-    supported[i++] = prop_atoms.net_frame_extents;
-    supported[i++] = prop_atoms.net_request_frame_extents;
-    supported[i++] = prop_atoms.net_restack_window;
-    supported[i++] = prop_atoms.net_startup_id;
+    supported[i++] = OBT_PROP_ATOM(NET_FRAME_EXTENTS);
+    supported[i++] = OBT_PROP_ATOM(NET_REQUEST_FRAME_EXTENTS);
+    supported[i++] = OBT_PROP_ATOM(NET_RESTACK_WINDOW);
+    supported[i++] = OBT_PROP_ATOM(NET_STARTUP_ID);
 #ifdef SYNC
-    supported[i++] = prop_atoms.net_wm_sync_request;
-    supported[i++] = prop_atoms.net_wm_sync_request_counter;
+    supported[i++] = OBT_PROP_ATOM(NET_WM_SYNC_REQUEST);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_SYNC_REQUEST_COUNTER);
 #endif
-
-    supported[i++] = prop_atoms.kde_wm_change_state;
-    supported[i++] = prop_atoms.kde_net_wm_frame_strut;
-    supported[i++] = prop_atoms.kde_net_wm_window_type_override;
-
-    supported[i++] = prop_atoms.ob_wm_action_undecorate;
-    supported[i++] = prop_atoms.ob_wm_state_undecorated;
-    supported[i++] = prop_atoms.openbox_pid;
-    supported[i++] = prop_atoms.ob_theme;
-    supported[i++] = prop_atoms.ob_control;
+    supported[i++] = OBT_PROP_ATOM(NET_WM_PID);
+    supported[i++] = OBT_PROP_ATOM(NET_WM_PING);
+
+    supported[i++] = OBT_PROP_ATOM(KDE_WM_CHANGE_STATE);
+    supported[i++] = OBT_PROP_ATOM(KDE_NET_WM_FRAME_STRUT);
+    supported[i++] = OBT_PROP_ATOM(KDE_NET_WM_WINDOW_TYPE_OVERRIDE);
+
+    supported[i++] = OBT_PROP_ATOM(OB_WM_ACTION_UNDECORATE);
+    supported[i++] = OBT_PROP_ATOM(OB_WM_STATE_UNDECORATED);
+    supported[i++] = OBT_PROP_ATOM(OPENBOX_PID);
+    supported[i++] = OBT_PROP_ATOM(OB_THEME);
+    supported[i++] = OBT_PROP_ATOM(OB_CONFIG_FILE);
+    supported[i++] = OBT_PROP_ATOM(OB_CONTROL);
     g_assert(i == num_support);
 
-    PROP_SETA32(RootWindow(ob_display, ob_screen),
-                net_supported, atom, supported, num_support);
+    OBT_PROP_SETA32(obt_root(ob_screen),
+                    NET_SUPPORTED, ATOM, supported, num_support);
     g_free(supported);
 
     screen_tell_ksplash();
@@ -304,7 +304,7 @@ gboolean screen_annex()
     return TRUE;
 }
 
-static void screen_tell_ksplash()
+static void screen_tell_ksplash(void)
 {
     XEvent e;
     char **argv;
@@ -328,14 +328,14 @@ static void screen_tell_ksplash()
        hear it anyways. perhaps it is for old ksplash. or new ksplash. or
        something. oh well. */
     e.xclient.type = ClientMessage;
-    e.xclient.display = ob_display;
-    e.xclient.window = RootWindow(ob_display, ob_screen);
+    e.xclient.display = obt_display;
+    e.xclient.window = obt_root(ob_screen);
     e.xclient.message_type =
-        XInternAtom(ob_display, "_KDE_SPLASH_PROGRESS", False );
+        XInternAtom(obt_display, "_KDE_SPLASH_PROGRESS", False);
     e.xclient.format = 8;
     strcpy(e.xclient.data.b, "wm started");
-    XSendEvent(ob_display, RootWindow(ob_display, ob_screen),
-               False, SubstructureNotifyMask, &e );
+    XSendEvent(obt_display, obt_root(ob_screen),
+               False, SubstructureNotifyMask, &e);
 }
 
 void screen_startup(gboolean reconfig)
@@ -344,24 +344,29 @@ void screen_startup(gboolean reconfig)
     guint32 d;
     gboolean namesexist = FALSE;
 
-    desktop_popup = pager_popup_new(FALSE);
-    pager_popup_height(desktop_popup, POPUP_HEIGHT);
-
     if (reconfig) {
-        /* update the pager popup's width */
-        pager_popup_text_width_to_strings(desktop_popup,
-                                          screen_desktop_names,
-                                          screen_num_desktops);
+        guint i;
+        desktop_popup = g_new(ObPagerPopup*, screen_num_monitors);
+        for (i = 0; i < screen_num_monitors; i++) {
+            desktop_popup[i] = pager_popup_new();
+            pager_popup_height(desktop_popup[i], POPUP_HEIGHT);
+
+            /* update the pager popup's width */
+            pager_popup_text_width_to_strings(desktop_popup[i],
+                                              screen_desktop_names,
+                                              screen_num_desktops);
+        }
+
         return;
+    } else {
+        desktop_popup = NULL;
     }
 
     /* get the initial size */
     screen_resize();
 
     /* have names already been set for the desktops? */
-    if (PROP_GETSS(RootWindow(ob_display, ob_screen),
-                   net_desktop_names, utf8, &names))
-    {
+    if (OBT_PROP_GETSS(obt_root(ob_screen), NET_DESKTOP_NAMES, utf8, &names)) {
         g_strfreev(names);
         namesexist = TRUE;
     }
@@ -382,7 +387,8 @@ void screen_startup(gboolean reconfig)
             names[i] = g_strdup(it->data);
 
         /* set the root window property */
-        PROP_SETSS(RootWindow(ob_display, ob_screen), net_desktop_names,names);
+        OBT_PROP_SETSS(obt_root(ob_screen),
+                       NET_DESKTOP_NAMES, utf8, (const gchar**)names);
 
         g_strfreev(names);
     }
@@ -392,9 +398,19 @@ void screen_startup(gboolean reconfig)
        this will also set the default names from the config file up for
        desktops that don't have names yet */
     screen_num_desktops = 0;
-    if (PROP_GET32(RootWindow(ob_display, ob_screen),
-                   net_number_of_desktops, cardinal, &d))
+    if (OBT_PROP_GET32(obt_root(ob_screen),
+                       NET_NUMBER_OF_DESKTOPS, CARDINAL, &d))
+    {
+        if (d != config_desktops_num) {
+            /* TRANSLATORS: If you need to specify a different order of the
+               arguments, you can use %1$d for the first one and %2$d for the
+               second one. For example,
+               "The current session has %2$d desktops, but Openbox is configured for %1$d ..." */
+            g_warning(ngettext("Openbox is configured for %d desktop, but the current session has %d.  Overriding the Openbox configuration.", "Openbox is configured for %d desktops, but the current session has %d.  Overriding the Openbox configuration.", config_desktops_num),
+                      config_desktops_num, d);
+        }
         screen_set_num_desktops(d);
+    }
     /* restore from session if possible */
     else if (session_num_desktops)
         screen_set_num_desktops(session_num_desktops);
@@ -403,8 +419,8 @@ void screen_startup(gboolean reconfig)
 
     screen_desktop = screen_num_desktops;  /* something invalid */
     /* start on the current desktop when a wm was already running */
-    if (PROP_GET32(RootWindow(ob_display, ob_screen),
-                   net_current_desktop, cardinal, &d) &&
+    if (OBT_PROP_GET32(obt_root(ob_screen),
+                       NET_CURRENT_DESKTOP, CARDINAL, &d) &&
         d < screen_num_desktops)
     {
         screen_set_desktop(d, FALSE);
@@ -418,8 +434,8 @@ void screen_startup(gboolean reconfig)
 
     /* don't start in showing-desktop mode */
     screen_showing_desktop = FALSE;
-    PROP_SET32(RootWindow(ob_display, ob_screen),
-               net_showing_desktop, cardinal, screen_showing_desktop);
+    OBT_PROP_SET32(obt_root(ob_screen),
+                   NET_SHOWING_DESKTOP, CARDINAL, screen_showing_desktop);
 
     if (session_desktop_layout_present &&
         screen_validate_layout(&session_desktop_layout))
@@ -432,36 +448,40 @@ void screen_startup(gboolean reconfig)
 
 void screen_shutdown(gboolean reconfig)
 {
-    pager_popup_free(desktop_popup);
+    guint i;
+
+    for (i = 0; i < screen_num_monitors; i++) {
+        pager_popup_free(desktop_popup[i]);
+    }
+    g_free(desktop_popup);
 
     if (reconfig)
         return;
 
-    XSelectInput(ob_display, RootWindow(ob_display, ob_screen),
-                 NoEventMask);
+    XSelectInput(obt_display, obt_root(ob_screen), NoEventMask);
 
     /* we're not running here no more! */
-    PROP_ERASE(RootWindow(ob_display, ob_screen), openbox_pid);
+    OBT_PROP_ERASE(obt_root(ob_screen), OPENBOX_PID);
     /* not without us */
-    PROP_ERASE(RootWindow(ob_display, ob_screen), net_supported);
+    OBT_PROP_ERASE(obt_root(ob_screen), NET_SUPPORTED);
     /* don't keep this mode */
-    PROP_ERASE(RootWindow(ob_display, ob_screen), net_showing_desktop);
+    OBT_PROP_ERASE(obt_root(ob_screen), NET_SHOWING_DESKTOP);
 
-    XDestroyWindow(ob_display, screen_support_win);
+    XDestroyWindow(obt_display, screen_support_win);
 
     g_strfreev(screen_desktop_names);
     screen_desktop_names = NULL;
 }
 
-void screen_resize()
+void screen_resize(void)
 {
     static gint oldw = 0, oldh = 0;
     gint w, h;
     GList *it;
     gulong geometry[2];
 
-    w = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
-    h = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
+    w = WidthOfScreen(ScreenOfDisplay(obt_display, ob_screen));
+    h = HeightOfScreen(ScreenOfDisplay(obt_display, ob_screen));
 
     if (w == oldw && h == oldh) return;
 
@@ -470,10 +490,10 @@ void screen_resize()
     /* Set the _NET_DESKTOP_GEOMETRY hint */
     screen_physical_size.width = geometry[0] = w;
     screen_physical_size.height = geometry[1] = h;
-    PROP_SETA32(RootWindow(ob_display, ob_screen),
-                net_desktop_geometry, cardinal, geometry, 2);
+    OBT_PROP_SETA32(obt_root(ob_screen),
+                    NET_DESKTOP_GEOMETRY, CARDINAL, geometry, 2);
 
-    if (ob_state() == OB_STATE_STARTING)
+    if (ob_state() != OB_STATE_RUNNING)
         return;
 
     screen_update_areas();
@@ -495,13 +515,12 @@ void screen_set_num_desktops(guint num)
 
     old = screen_num_desktops;
     screen_num_desktops = num;
-    PROP_SET32(RootWindow(ob_display, ob_screen),
-               net_number_of_desktops, cardinal, num);
+    OBT_PROP_SET32(obt_root(ob_screen), NET_NUMBER_OF_DESKTOPS, CARDINAL, num);
 
     /* set the viewport hint */
     viewport = g_new0(gulong, num * 2);
-    PROP_SETA32(RootWindow(ob_display, ob_screen),
-                net_desktop_viewport, cardinal, viewport, num * 2);
+    OBT_PROP_SETA32(obt_root(ob_screen),
+                    NET_DESKTOP_VIEWPORT, CARDINAL, viewport, num * 2);
     g_free(viewport);
 
     /* the number of rows/columns will differ */
@@ -523,12 +542,13 @@ void screen_set_num_desktops(guint num)
                 stacking_raise(CLIENT_AS_WINDOW(c));
         }
     }
+    g_list_free(stacking_copy);
 
     /* change our struts/area to match (after moving windows) */
     screen_update_areas();
 
     /* may be some unnamed desktops that we need to fill in with names
-     (after updating the areas so the popup can resize) */
+       (after updating the areas so the popup can resize) */
     screen_update_desktop_names();
 
     /* change our desktop if we're on one that no longer exists! */
@@ -536,7 +556,7 @@ void screen_set_num_desktops(guint num)
         screen_set_desktop(num - 1, TRUE);
 }
 
-static void screen_fallback_focus()
+static void screen_fallback_focus(void)
 {
     ObClient *c;
     gboolean allow_omni;
@@ -577,25 +597,99 @@ static void screen_fallback_focus()
     }
 }
 
+static gboolean last_desktop_func(gpointer data)
+{
+    screen_desktop_timeout = TRUE;
+    return FALSE;
+}
+
 void screen_set_desktop(guint num, gboolean dofocus)
 {
     GList *it;
-    guint old;
+    guint previous;
     gulong ignore_start;
 
     g_assert(num < screen_num_desktops);
 
-    old = screen_desktop;
+    previous = screen_desktop;
     screen_desktop = num;
 
-    if (old == num) return;
+    if (previous == num) return;
+
+    OBT_PROP_SET32(obt_root(ob_screen), NET_CURRENT_DESKTOP, CARDINAL, num);
+
+    /* This whole thing decides when/how to save the screen_last_desktop so
+       that it can be restored later if you want */
+    if (screen_desktop_timeout) {
+        /* If screen_desktop_timeout is true, then we've been on this desktop
+           long enough and we can save it as the last desktop. */
 
-    PROP_SET32(RootWindow(ob_display, ob_screen),
-               net_current_desktop, cardinal, num);
+        if (screen_last_desktop == previous)
+            /* this is the startup state only */
+            screen_old_desktop = screen_desktop;
+        else {
+            /* save the "last desktop" as the "old desktop" */
+            screen_old_desktop = screen_last_desktop;
+            /* save the desktop we're coming from as the "last desktop" */
+            screen_last_desktop = previous;
+        }
+    }
+    else {
+        /* If screen_desktop_timeout is false, then we just got to this desktop
+           and we are moving away again. */
+
+        if (screen_desktop == screen_last_desktop) {
+            /* If we are moving to the "last desktop" .. */
+            if (previous == screen_old_desktop) {
+                /* .. from the "old desktop", change the last desktop to
+                   be where we are coming from */
+                screen_last_desktop = screen_old_desktop;
+            }
+            else if (screen_last_desktop == screen_old_desktop) {
+                /* .. and also to the "old desktop", change the "last
+                   desktop" to be where we are coming from */
+                screen_last_desktop = previous;
+            }
+            else {
+                /* .. from some other desktop, then set the "last desktop" to
+                   be the saved "old desktop", i.e. where we were before the
+                   "last desktop" */
+                screen_last_desktop = screen_old_desktop;
+            }
+        }
+        else {
+            /* If we are moving to any desktop besides the "last desktop"..
+               (this is the normal case) */
+            if (screen_desktop == screen_old_desktop) {
+                /* If moving to the "old desktop", which is not the
+                   "last desktop", don't save anything */
+            }
+            else if (previous == screen_old_desktop) {
+                /* If moving from the "old desktop", and not to the
+                   "last desktop", don't save anything */
+            }
+            else if (screen_last_desktop == screen_old_desktop) {
+                /* If the "last desktop" is the same as "old desktop" and
+                   you're not moving to the "last desktop" then save where
+                   we're coming from as the "last desktop" */
+                screen_last_desktop = previous;
+            }
+            else {
+                /* If the "last desktop" is different from the "old desktop"
+                   and you're not moving to the "last desktop", then don't save
+                   anything */
+            }
+        }
+    }
+    screen_desktop_timeout = FALSE;
+    obt_main_loop_timeout_remove(ob_main_loop, last_desktop_func);
+    obt_main_loop_timeout_add(ob_main_loop, REMEMBER_LAST_DESKTOP_TIME,
+                              last_desktop_func, NULL, NULL, NULL);
 
-    screen_last_desktop = old;
+    ob_debug("Moving to desktop %d", num+1);
 
-    ob_debug("Moving to desktop %d\n", num+1);
+    if (ob_state() == OB_STATE_RUNNING)
+        screen_show_desktop_popup(screen_desktop);
 
     /* ignore enter events caused by the move */
     ignore_start = event_start_ignore_all_enters();
@@ -628,8 +722,7 @@ void screen_set_desktop(guint num, gboolean dofocus)
     if (event_curtime != CurrentTime)
         screen_desktop_user_time = event_curtime;
 
-    if (ob_state() == OB_STATE_RUNNING)
-        screen_show_desktop_popup(screen_desktop);
+    hooks_queue(OB_HOOK_SCREEN_DESK_CHANGE, NULL);
 }
 
 void screen_add_desktop(gboolean current)
@@ -652,7 +745,7 @@ void screen_add_desktop(gboolean current)
                    parent - which will have to be on the same desktop */
                 !client_direct_parent(c))
             {
-                ob_debug("moving window %s\n", c->title);
+                ob_debug("moving window %s", c->title);
                 client_set_desktop(c, c->desktop+1, FALSE, TRUE);
             }
         }
@@ -693,7 +786,7 @@ void screen_remove_desktop(gboolean current)
                    parent - which will have to be on the same desktop */
                 !client_direct_parent(c))
             {
-                ob_debug("moving window %s\n", c->title);
+                ob_debug("moving window %s", c->title);
                 client_set_desktop(c, c->desktop - 1, TRUE, TRUE);
             }
             /* raise all the windows that are on the current desktop which
@@ -703,15 +796,16 @@ void screen_remove_desktop(gboolean current)
                 (d == DESKTOP_ALL || d == screen_desktop))
             {
                 stacking_raise(CLIENT_AS_WINDOW(c));
-                ob_debug("raising window %s\n", c->title);
+                ob_debug("raising window %s", c->title);
             }
         }
     }
+    g_list_free(stacking_copy);
 
     /* fallback focus like we're changing desktops */
     if (screen_desktop < screen_num_desktops - 1) {
         screen_fallback_focus();
-        ob_debug("fake desktop change\n");
+        ob_debug("fake desktop change");
     }
 
     screen_set_num_desktops(screen_num_desktops-1);
@@ -829,32 +923,52 @@ static guint translate_row_col(guint r, guint c)
 
 static gboolean hide_desktop_popup_func(gpointer data)
 {
-    pager_popup_hide(desktop_popup);
+    guint i;
+
+    for (i = 0; i < screen_num_monitors; i++) {
+        pager_popup_hide(desktop_popup[i]);
+    }
     return FALSE; /* don't repeat */
 }
 
 void screen_show_desktop_popup(guint d)
 {
     Rect *a;
+    guint i;
 
     /* 0 means don't show the popup */
     if (!config_desktop_popup_time) return;
 
-    a = screen_physical_area_active();
-    pager_popup_position(desktop_popup, CenterGravity,
-                         a->x + a->width / 2, a->y + a->height / 2);
-    pager_popup_icon_size_multiplier(desktop_popup,
-                                     (screen_desktop_layout.columns /
-                                      screen_desktop_layout.rows) / 2,
-                                     (screen_desktop_layout.rows/
-                                      screen_desktop_layout.columns) / 2);
-    pager_popup_max_width(desktop_popup,
-                          MAX(a->width/3, POPUP_WIDTH));
-    pager_popup_show(desktop_popup, screen_desktop_names[d], d);
-
-    ob_main_loop_timeout_remove(ob_main_loop, hide_desktop_popup_func);
-    ob_main_loop_timeout_add(ob_main_loop, config_desktop_popup_time * 1000,
-                             hide_desktop_popup_func, NULL, NULL, NULL);
+    for (i = 0; i < screen_num_monitors; i++) {
+        a = screen_physical_area_monitor(i);
+        pager_popup_position(desktop_popup[i], CenterGravity,
+                             a->x + a->width / 2, a->y + a->height / 2);
+        pager_popup_icon_size_multiplier(desktop_popup[i],
+                                         (screen_desktop_layout.columns /
+                                          screen_desktop_layout.rows) / 2,
+                                         (screen_desktop_layout.rows/
+                                          screen_desktop_layout.columns) / 2);
+        pager_popup_max_width(desktop_popup[i],
+                              MAX(a->width/3, POPUP_WIDTH));
+        pager_popup_show(desktop_popup[i], screen_desktop_names[d], d);
+
+        obt_main_loop_timeout_remove(ob_main_loop, hide_desktop_popup_func);
+        obt_main_loop_timeout_add(ob_main_loop, config_desktop_popup_time * 1000,
+                                  hide_desktop_popup_func, desktop_popup[i],
+                                  g_direct_equal, NULL);
+        g_free(a);
+    }
+}
+
+void screen_hide_desktop_popup(void)
+{
+    guint i;
+
+    for (i = 0; i < screen_num_monitors; i++) {
+        obt_main_loop_timeout_remove_data(ob_main_loop, hide_desktop_popup_func,
+                                          desktop_popup[i], FALSE);
+        pager_popup_hide(desktop_popup[i]);
+    }
 }
 
 guint screen_find_desktop(guint from, ObDirection dir,
@@ -1000,7 +1114,7 @@ static gboolean screen_validate_layout(ObDesktopLayout *l)
     return TRUE;
 }
 
-void screen_update_layout()
+void screen_update_layout(void)
 
 {
     ObDesktopLayout l;
@@ -1012,13 +1126,13 @@ void screen_update_layout()
     screen_desktop_layout.rows = 1;
     screen_desktop_layout.columns = screen_num_desktops;
 
-    if (PROP_GETA32(RootWindow(ob_display, ob_screen),
-                    net_desktop_layout, cardinal, &data, &num)) {
+    if (OBT_PROP_GETA32(obt_root(ob_screen),
+                        NET_DESKTOP_LAYOUT, CARDINAL, &data, &num)) {
         if (num == 3 || num == 4) {
 
-            if (data[0] == prop_atoms.net_wm_orientation_vert)
+            if (data[0] == OBT_PROP_ATOM(NET_WM_ORIENTATION_VERT))
                 l.orientation = OB_ORIENTATION_VERT;
-            else if (data[0] == prop_atoms.net_wm_orientation_horz)
+            else if (data[0] == OBT_PROP_ATOM(NET_WM_ORIENTATION_HORZ))
                 l.orientation = OB_ORIENTATION_HORZ;
             else
                 return;
@@ -1026,13 +1140,13 @@ void screen_update_layout()
             if (num < 4)
                 l.start_corner = OB_CORNER_TOPLEFT;
             else {
-                if (data[3] == prop_atoms.net_wm_topleft)
+                if (data[3] == OBT_PROP_ATOM(NET_WM_TOPLEFT))
                     l.start_corner = OB_CORNER_TOPLEFT;
-                else if (data[3] == prop_atoms.net_wm_topright)
+                else if (data[3] == OBT_PROP_ATOM(NET_WM_TOPRIGHT))
                     l.start_corner = OB_CORNER_TOPRIGHT;
-                else if (data[3] == prop_atoms.net_wm_bottomright)
+                else if (data[3] == OBT_PROP_ATOM(NET_WM_BOTTOMRIGHT))
                     l.start_corner = OB_CORNER_BOTTOMRIGHT;
-                else if (data[3] == prop_atoms.net_wm_bottomleft)
+                else if (data[3] == OBT_PROP_ATOM(NET_WM_BOTTOMLEFT))
                     l.start_corner = OB_CORNER_BOTTOMLEFT;
                 else
                     return;
@@ -1049,7 +1163,7 @@ void screen_update_layout()
     }
 }
 
-void screen_update_desktop_names()
+void screen_update_desktop_names(void)
 {
     guint i;
 
@@ -1057,8 +1171,8 @@ void screen_update_desktop_names()
     g_strfreev(screen_desktop_names);
     screen_desktop_names = NULL;
 
-    if (PROP_GETSS(RootWindow(ob_display, ob_screen),
-                   net_desktop_names, utf8, &screen_desktop_names))
+    if (OBT_PROP_GETSS(obt_root(ob_screen),
+                       NET_DESKTOP_NAMES, utf8, &screen_desktop_names))
         for (i = 0; screen_desktop_names[i] && i < screen_num_desktops; ++i);
     else
         i = 0;
@@ -1084,14 +1198,16 @@ void screen_update_desktop_names()
 
         /* if we changed any names, then set the root property so we can
            all agree on the names */
-        PROP_SETSS(RootWindow(ob_display, ob_screen), net_desktop_names,
-                   screen_desktop_names);
+        OBT_PROP_SETSS(obt_root(ob_screen), NET_DESKTOP_NAMES,
+                       utf8, (const gchar**)screen_desktop_names);
     }
 
     /* resize the pager for these names */
-    pager_popup_text_width_to_strings(desktop_popup,
-                                      screen_desktop_names,
-                                      screen_num_desktops);
+    for (i = 0; i < screen_num_monitors; i++) {
+        pager_popup_text_width_to_strings(desktop_popup[i],
+                                          screen_desktop_names,
+                                          screen_num_desktops);
+    }
 }
 
 void screen_show_desktop(gboolean show, ObClient *show_only)
@@ -1152,24 +1268,23 @@ void screen_show_desktop(gboolean show, ObClient *show_only)
     }
 
     show = !!show; /* make it boolean */
-    PROP_SET32(RootWindow(ob_display, ob_screen),
-               net_showing_desktop, cardinal, show);
+    OBT_PROP_SET32(obt_root(ob_screen), NET_SHOWING_DESKTOP, CARDINAL, show);
 }
 
 void screen_install_colormap(ObClient *client, gboolean install)
 {
     if (client == NULL || client->colormap == None) {
         if (install)
-            XInstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
+            XInstallColormap(obt_display, RrColormap(ob_rr_inst));
         else
-            XUninstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
+            XUninstallColormap(obt_display, RrColormap(ob_rr_inst));
     } else {
-        xerror_set_ignore(TRUE);
+        obt_display_ignore_errors(TRUE);
         if (install)
-            XInstallColormap(RrDisplay(ob_rr_inst), client->colormap);
+            XInstallColormap(obt_display, client->colormap);
         else
-            XUninstallColormap(RrDisplay(ob_rr_inst), client->colormap);
-        xerror_set_ignore(FALSE);
+            XUninstallColormap(obt_display, client->colormap);
+        obt_display_ignore_errors(FALSE);
     }
 }
 
@@ -1211,7 +1326,56 @@ typedef struct {
     } \
 }
 
-void screen_update_areas()
+static void get_xinerama_screens(Rect **xin_areas, guint *nxin)
+{
+    guint i;
+    gint n, l, r, t, b;
+#ifdef XINERAMA
+    XineramaScreenInfo *info;
+#endif
+
+    if (ob_debug_xinerama) {
+        gint w = WidthOfScreen(ScreenOfDisplay(obt_display, ob_screen));
+        gint h = HeightOfScreen(ScreenOfDisplay(obt_display, ob_screen));
+        *nxin = 2;
+        *xin_areas = g_new(Rect, *nxin + 1);
+        RECT_SET((*xin_areas)[0], 0, 0, w/2, h);
+        RECT_SET((*xin_areas)[1], w/2, 0, w-(w/2), h);
+    }
+#ifdef XINERAMA
+    else if (obt_display_extension_xinerama &&
+             (info = XineramaQueryScreens(obt_display, &n))) {
+        *nxin = n;
+        *xin_areas = g_new(Rect, *nxin + 1);
+        for (i = 0; i < *nxin; ++i)
+            RECT_SET((*xin_areas)[i], info[i].x_org, info[i].y_org,
+                     info[i].width, info[i].height);
+        XFree(info);
+    }
+#endif
+    else {
+        *nxin = 1;
+        *xin_areas = g_new(Rect, *nxin + 1);
+        RECT_SET((*xin_areas)[0], 0, 0,
+                 WidthOfScreen(ScreenOfDisplay(obt_display, ob_screen)),
+                 HeightOfScreen(ScreenOfDisplay(obt_display, ob_screen)));
+    }
+
+    /* returns one extra with the total area in it */
+    l = (*xin_areas)[0].x;
+    t = (*xin_areas)[0].y;
+    r = (*xin_areas)[0].x + (*xin_areas)[0].width - 1;
+    b = (*xin_areas)[0].y + (*xin_areas)[0].height - 1;
+    for (i = 1; i < *nxin; ++i) {
+        l = MIN(l, (*xin_areas)[i].x);
+        t = MIN(l, (*xin_areas)[i].y);
+        r = MAX(r, (*xin_areas)[i].x + (*xin_areas)[i].width - 1);
+        b = MAX(b, (*xin_areas)[i].y + (*xin_areas)[i].height - 1);
+    }
+    RECT_SET((*xin_areas)[*nxin], l, t, r - l + 1, b - t + 1);
+}
+
+void screen_update_areas(void)
 {
     guint i, j;
     gulong *dims;
@@ -1219,7 +1383,21 @@ void screen_update_areas()
     GSList *sit;
 
     g_free(monitor_area);
-    extensions_xinerama_screens(&monitor_area, &screen_num_monitors);
+    get_xinerama_screens(&monitor_area, &screen_num_monitors);
+
+    if (!desktop_popup) {
+        desktop_popup = g_new(ObPagerPopup*, screen_num_monitors);
+        for (i = 0; i < screen_num_monitors; i++) {
+            desktop_popup[i] = pager_popup_new();
+            pager_popup_height(desktop_popup[i], POPUP_HEIGHT);
+
+            if (screen_desktop_names)
+                /* update the pager popup's width */
+                pager_popup_text_width_to_strings(desktop_popup[i],
+                                                  screen_desktop_names,
+                                                  screen_num_desktops);
+        }
+    }
 
     /* set up the user-specified margins */
     config_margins.top_start = RECT_LEFT(monitor_area[screen_num_monitors]);
@@ -1318,6 +1496,15 @@ void screen_update_areas()
                     b = MAX(b, s->strut->bottom);
             }
 
+            if (l) l += RECT_LEFT  (monitor_area[screen_num_monitors])
+                        - RECT_LEFT  (monitor_area[i]);
+            if (t) t += RECT_TOP   (monitor_area[screen_num_monitors])
+                        - RECT_TOP   (monitor_area[i]);
+            if (r) r -= RECT_RIGHT (monitor_area[screen_num_monitors])
+                        - RECT_RIGHT (monitor_area[i]);
+            if (b) b -= RECT_BOTTOM(monitor_area[screen_num_monitors])
+                        - RECT_BOTTOM(monitor_area[i]);
+
             /* based on these margins, set the work area for the
                monitor/desktop */
             dims[(i * screen_num_desktops + j) * 4 + 0] += l;
@@ -1328,8 +1515,8 @@ void screen_update_areas()
 
     /* all the work areas are not used here, only the ones for the first
        monitor are */
-    PROP_SETA32(RootWindow(ob_display, ob_screen), net_workarea, cardinal,
-                dims, 4 * screen_num_desktops);
+    OBT_PROP_SETA32(obt_root(ob_screen), NET_WORKAREA, CARDINAL,
+                    dims, 4 * screen_num_desktops);
 
     /* the area has changed, adjust all the windows if they need it */
     for (it = client_list; it; it = g_list_next(it))
@@ -1458,28 +1645,32 @@ Rect* screen_area(guint desktop, guint head, Rect *search)
                 if ((s->desktop == d || s->desktop == DESKTOP_ALL) &&
                     STRUT_LEFT_IN_SEARCH(s->strut, search) &&
                     !STRUT_LEFT_IGNORE(s->strut, us, search))
-                    l = MAX(l, al + s->strut->left);
+                    l = MAX(l, RECT_LEFT(monitor_area[screen_num_monitors])
+                               + s->strut->left);
             }
             for (it = struts_top; it; it = g_slist_next(it)) {
                 ObScreenStrut *s = it->data;
                 if ((s->desktop == d || s->desktop == DESKTOP_ALL) &&
                     STRUT_TOP_IN_SEARCH(s->strut, search) &&
                     !STRUT_TOP_IGNORE(s->strut, us, search))
-                    t = MAX(t, at + s->strut->top);
+                    t = MAX(t, RECT_TOP(monitor_area[screen_num_monitors])
+                               + s->strut->top);
             }
             for (it = struts_right; it; it = g_slist_next(it)) {
                 ObScreenStrut *s = it->data;
                 if ((s->desktop == d || s->desktop == DESKTOP_ALL) &&
                     STRUT_RIGHT_IN_SEARCH(s->strut, search) &&
                     !STRUT_RIGHT_IGNORE(s->strut, us, search))
-                    r = MIN(r, ar - s->strut->right);
+                    r = MIN(r, RECT_RIGHT(monitor_area[screen_num_monitors])
+                               - s->strut->right);
             }
             for (it = struts_bottom; it; it = g_slist_next(it)) {
                 ObScreenStrut *s = it->data;
                 if ((s->desktop == d || s->desktop == DESKTOP_ALL) &&
                     STRUT_BOTTOM_IN_SEARCH(s->strut, search) &&
                     !STRUT_BOTTOM_IGNORE(s->strut, us, search))
-                    b = MIN(b, ab - s->strut->bottom);
+                    b = MIN(b, RECT_BOTTOM(monitor_area[screen_num_monitors])
+                               - s->strut->bottom);
             }
 
             /* limit to this monitor */
@@ -1503,7 +1694,7 @@ Rect* screen_area(guint desktop, guint head, Rect *search)
 guint screen_find_monitor(Rect *search)
 {
     guint i;
-    guint most = 0;
+    guint most = screen_num_monitors;
     guint mostv = 0;
 
     for (i = 0; i < screen_num_monitors; ++i) {
@@ -1525,7 +1716,7 @@ guint screen_find_monitor(Rect *search)
     return most;
 }
 
-Rect* screen_physical_area_all_monitors()
+Rect* screen_physical_area_all_monitors(void)
 {
     return screen_physical_area_monitor(screen_num_monitors);
 }
@@ -1547,7 +1738,7 @@ gboolean screen_physical_area_monitor_contains(guint head, Rect *search)
     return RECT_INTERSECTS_RECT(monitor_area[head], *search);
 }
 
-Rect* screen_physical_area_active()
+Rect* screen_physical_area_active(void)
 {
     Rect *a;
     gint x, y;
@@ -1567,13 +1758,13 @@ Rect* screen_physical_area_active()
     return a;
 }
 
-void screen_set_root_cursor()
+void screen_set_root_cursor(void)
 {
     if (sn_app_starting())
-        XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
+        XDefineCursor(obt_display, obt_root(ob_screen),
                       ob_cursor(OB_CURSOR_BUSYPOINTER));
     else
-        XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
+        XDefineCursor(obt_display, obt_root(ob_screen),
                       ob_cursor(OB_CURSOR_POINTER));
 }
 
@@ -1584,12 +1775,12 @@ gboolean screen_pointer_pos(gint *x, gint *y)
     guint u;
     gboolean ret;
 
-    ret = !!XQueryPointer(ob_display, RootWindow(ob_display, ob_screen),
+    ret = !!XQueryPointer(obt_display, obt_root(ob_screen),
                           &w, &w, x, y, &i, &i, &u);
     if (!ret) {
-        for (i = 0; i < ScreenCount(ob_display); ++i)
+        for (i = 0; i < ScreenCount(obt_display); ++i)
             if (i != ob_screen)
-                if (XQueryPointer(ob_display, RootWindow(ob_display, i),
+                if (XQueryPointer(obt_display, obt_root(i),
                                   &w, &w, x, y, &i, &i, &u))
                     break;
     }