fix constness
[dana/openbox.git] / openbox / screen.c
index 9899cfd..ef98446 100644 (file)
@@ -20,8 +20,6 @@
 #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 "event.h"
 #include "focus.h"
 #include "popup.h"
-#include "extensions.h"
 #include "render/render.h"
 #include "gettext.h"
+#include "obt/display.h"
+#include "obt/prop.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();
+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;
-Size     screen_physical_size;
+guint    screen_last_desktop = 1;
 gboolean screen_showing_desktop;
 ObDesktopLayout screen_desktop_layout;
 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 array of areas per monitor */
 static Rect  *monitor_area = NULL;
 /*! An array of desktops, holding an array of struts */
@@ -77,7 +78,11 @@ static GSList *struts_bottom = NULL;
 
 static ObPagerPopup *desktop_popup;
 
-static gboolean replace_wm()
+/*! 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(void)
 {
     gchar *wm_sn;
     Atom wm_sn_atom;
@@ -85,10 +90,10 @@ 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 +102,23 @@ 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 +131,7 @@ 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 +146,48 @@ 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, RootWindow(obt_display, 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,
+                                       RootWindow(obt_display, 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),
+    obt_display_ignore_errors(TRUE);
+    XSelectInput(obt_display, RootWindow(obt_display, ob_screen),
                  ROOT_EVENTMASK);
-    xerror_set_ignore(FALSE);
-    if (xerror_occured) {
+    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 +195,110 @@ gboolean screen_annex()
 
     /* set the OPENBOX_PID hint */
     pid = getpid();
-    PROP_SET32(RootWindow(ob_display, ob_screen),
-               openbox_pid, cardinal, pid);
+    OBT_PROP_SET32(RootWindow(obt_display, 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(RootWindow(obt_display, 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_CONTROL);
     g_assert(i == num_support);
 
-    PROP_SETA32(RootWindow(ob_display, ob_screen),
-                net_supported, atom, supported, num_support);
+    OBT_PROP_SETA32(RootWindow(obt_display, ob_screen),
+                    NET_SUPPORTED, ATOM, supported, num_support);
     g_free(supported);
 
     screen_tell_ksplash();
@@ -304,7 +306,7 @@ gboolean screen_annex()
     return TRUE;
 }
 
-static void screen_tell_ksplash()
+static void screen_tell_ksplash(void)
 {
     XEvent e;
     char **argv;
@@ -328,13 +330,13 @@ 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 = RootWindow(obt_display, 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),
+    XSendEvent(obt_display, RootWindow(obt_display, ob_screen),
                False, SubstructureNotifyMask, &e );
 }
 
@@ -344,7 +346,7 @@ void screen_startup(gboolean reconfig)
     guint32 d;
     gboolean namesexist = FALSE;
 
-    desktop_popup = pager_popup_new(FALSE);
+    desktop_popup = pager_popup_new();
     pager_popup_height(desktop_popup, POPUP_HEIGHT);
 
     if (reconfig) {
@@ -359,8 +361,8 @@ void screen_startup(gboolean reconfig)
     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(RootWindow(obt_display, ob_screen),
+                       NET_DESKTOP_NAMES, utf8, &names))
     {
         g_strfreev(names);
         namesexist = TRUE;
@@ -382,7 +384,8 @@ 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(RootWindow(obt_display, ob_screen),
+                       NET_DESKTOP_NAMES, utf8, (const gchar**)names);
 
         g_strfreev(names);
     }
@@ -392,8 +395,8 @@ 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(RootWindow(obt_display, ob_screen),
+                       NET_NUMBER_OF_DESKTOPS, CARDINAL, &d))
         screen_set_num_desktops(d);
     /* restore from session if possible */
     else if (session_num_desktops)
@@ -403,8 +406,8 @@ 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(RootWindow(obt_display, ob_screen),
+                       NET_CURRENT_DESKTOP, CARDINAL, &d) &&
         d < screen_num_desktops)
     {
         screen_set_desktop(d, FALSE);
@@ -418,8 +421,8 @@ 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(RootWindow(obt_display, ob_screen),
+                   NET_SHOWING_DESKTOP, CARDINAL, screen_showing_desktop);
 
     if (session_desktop_layout_present &&
         screen_validate_layout(&session_desktop_layout))
@@ -437,31 +440,31 @@ void screen_shutdown(gboolean reconfig)
     if (reconfig)
         return;
 
-    XSelectInput(ob_display, RootWindow(ob_display, ob_screen),
+    XSelectInput(obt_display, RootWindow(obt_display, ob_screen),
                  NoEventMask);
 
     /* we're not running here no more! */
-    PROP_ERASE(RootWindow(ob_display, ob_screen), openbox_pid);
+    OBT_PROP_ERASE(RootWindow(obt_display, ob_screen), OPENBOX_PID);
     /* not without us */
-    PROP_ERASE(RootWindow(ob_display, ob_screen), net_supported);
+    OBT_PROP_ERASE(RootWindow(obt_display, ob_screen), NET_SUPPORTED);
     /* don't keep this mode */
-    PROP_ERASE(RootWindow(ob_display, ob_screen), net_showing_desktop);
+    OBT_PROP_ERASE(RootWindow(obt_display, 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;
 
@@ -470,8 +473,8 @@ 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(RootWindow(obt_display, ob_screen),
+                    NET_DESKTOP_GEOMETRY, CARDINAL, geometry, 2);
 
     if (ob_state() == OB_STATE_STARTING)
         return;
@@ -495,13 +498,13 @@ 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(RootWindow(obt_display, 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(RootWindow(obt_display, ob_screen),
+                    NET_DESKTOP_VIEWPORT, CARDINAL, viewport, num * 2);
     g_free(viewport);
 
     /* the number of rows/columns will differ */
@@ -536,7 +539,7 @@ 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;
@@ -577,23 +580,90 @@ 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(RootWindow(obt_display, ob_screen),
+                   NET_CURRENT_DESKTOP, CARDINAL, num);
 
-    PROP_SET32(RootWindow(ob_display, 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. */
 
-    screen_last_desktop = old;
+        /* 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;
+    ob_main_loop_timeout_remove(ob_main_loop, last_desktop_func);
+    ob_main_loop_timeout_add(ob_main_loop, REMEMBER_LAST_DESKTOP_TIME,
+                             last_desktop_func, NULL, NULL, NULL);
 
     ob_debug("Moving to desktop %d\n", num+1);
 
@@ -858,6 +928,12 @@ void screen_show_desktop_popup(guint d)
     g_free(a);
 }
 
+void screen_hide_desktop_popup(void)
+{
+    ob_main_loop_timeout_remove(ob_main_loop, hide_desktop_popup_func);
+    pager_popup_hide(desktop_popup);
+}
+
 guint screen_find_desktop(guint from, ObDirection dir,
                           gboolean wrap, gboolean linear)
 {
@@ -1001,7 +1077,7 @@ static gboolean screen_validate_layout(ObDesktopLayout *l)
     return TRUE;
 }
 
-void screen_update_layout()
+void screen_update_layout(void)
 
 {
     ObDesktopLayout l;
@@ -1013,13 +1089,13 @@ 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(RootWindow(obt_display, 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;
@@ -1027,13 +1103,13 @@ 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;
@@ -1050,7 +1126,7 @@ void screen_update_layout()
     }
 }
 
-void screen_update_desktop_names()
+void screen_update_desktop_names(void)
 {
     guint i;
 
@@ -1058,8 +1134,8 @@ 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(RootWindow(obt_display, ob_screen),
+                       NET_DESKTOP_NAMES, utf8, &screen_desktop_names))
         for (i = 0; screen_desktop_names[i] && i < screen_num_desktops; ++i);
     else
         i = 0;
@@ -1085,8 +1161,8 @@ 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(RootWindow(obt_display, ob_screen), NET_DESKTOP_NAMES,
+                       utf8, (const gchar**)screen_desktop_names);
     }
 
     /* resize the pager for these names */
@@ -1153,24 +1229,24 @@ 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(RootWindow(obt_display, 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);
     }
 }
 
@@ -1212,7 +1288,56 @@ typedef struct {
     } \
 }
 
-void screen_update_areas()
+static void get_xinerama_screens(Rect **xin_areas, guint *nxin)
+{
+    guint i;
+    gint l, r, t, b;
+
+    if (ob_debug_xinerama) {
+        g_print("Using fake xinerama !\n");
+        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) {
+        guint i;
+        gint n;
+        XineramaScreenInfo *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;
@@ -1220,7 +1345,7 @@ 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);
 
     /* set up the user-specified margins */
     config_margins.top_start = RECT_LEFT(monitor_area[screen_num_monitors]);
@@ -1329,8 +1454,8 @@ 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(RootWindow(obt_display, 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))
@@ -1504,7 +1629,7 @@ 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) {
@@ -1526,7 +1651,7 @@ 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);
 }
@@ -1548,7 +1673,7 @@ 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;
@@ -1568,13 +1693,13 @@ 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, RootWindow(obt_display, ob_screen),
                       ob_cursor(OB_CURSOR_BUSYPOINTER));
     else
-        XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
+        XDefineCursor(obt_display, RootWindow(obt_display, ob_screen),
                       ob_cursor(OB_CURSOR_POINTER));
 }
 
@@ -1585,12 +1710,12 @@ 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, RootWindow(obt_display, 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, RootWindow(obt_display, i),
                                   &w, &w, x, y, &i, &i, &u))
                     break;
     }