]> Dogcows Code - chaz/openbox/blobdiff - openbox/screen.c
add the --replace command line option, and support for the WM_Sn selection
[chaz/openbox] / openbox / screen.c
index 4998d97c92a7167e889893aafba1d8630305f659..3e3b9632d50ede9169864fb03a6a251b0c5aa0ef 100644 (file)
                        SubstructureNotifyMask | SubstructureRedirectMask | \
                        ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
 
-guint    screen_num_desktops    = 0;
-guint    screen_num_monitors    = 0;
-guint    screen_desktop         = 0;
+guint    screen_num_desktops;
+guint    screen_num_monitors;
+guint    screen_desktop;
 Size     screen_physical_size;
 gboolean screen_showing_desktop;
 DesktopLayout screen_desktop_layout;
-char   **screen_desktop_names = NULL;
+char   **screen_desktop_names;
+Window   screen_support_win;
 
-static Rect  **area = NULL; /* array of desktop holding array of
-                               xinerama areas */
-static Rect  *monitor_area = NULL;
-static Window support_window = None;
+static Rect  **area; /* array of desktop holding array of xinerama areas */
+static Rect  *monitor_area;
 
 #ifdef USE_LIBSN
 static SnMonitorContext *sn_context;
 static int sn_busy_cnt;
-static Timer *sn_timer = NULL;
+static ObTimer *sn_timer;
 
 static void sn_event_func(SnMonitorEvent *event, void *data);
 #endif
 
 static void set_root_cursor();
 
-static gboolean running;
-static int another_running(Display *d, XErrorEvent *e)
+static gboolean replace_wm()
 {
-    (void)d;(void)e;
-    g_message("A window manager is already running on screen %d",
-             ob_screen);
-    running = TRUE;
-    return -1;
+    char *wm_sn;
+    Atom wm_sn_atom;
+    Window current_wm_sn_owner;
+    Time timestamp;
+
+    wm_sn = g_strdup_printf("WM_S%d", ob_screen);
+    wm_sn_atom = XInternAtom(ob_display, wm_sn, FALSE);
+
+    current_wm_sn_owner = XGetSelectionOwner(ob_display, wm_sn_atom);
+    if (current_wm_sn_owner) {
+        if (!ob_replace_wm) {
+            g_message("A window manager is already running on screen %d",
+                      ob_screen);
+            return FALSE;
+        }
+        xerror_set_ignore(TRUE);
+        xerror_occured = FALSE;
+
+        /* We want to find out when the current selection owner dies */
+        XSelectInput(ob_display, current_wm_sn_owner, StructureNotifyMask);
+        XSync(ob_display, FALSE);
+
+        xerror_set_ignore(FALSE);
+        if (xerror_occured)
+            current_wm_sn_owner = None;
+    }
+
+    {
+        /* Generate a timestamp */
+        XEvent event;
+
+        XSelectInput(ob_display, screen_support_win, PropertyChangeMask);
+
+        XChangeProperty(ob_display, screen_support_win,
+                        prop_atoms.wm_class, prop_atoms.string,
+                        8, PropModeAppend, NULL, 0);
+        XWindowEvent(ob_display, screen_support_win,
+                     PropertyChangeMask, &event);
+
+        XSelectInput(ob_display, screen_support_win, NoEventMask);
+
+        timestamp = event.xproperty.time;
+    }
+
+    XSetSelectionOwner(ob_display, wm_sn_atom, screen_support_win,
+                       timestamp);
+
+    if (XGetSelectionOwner(ob_display, wm_sn_atom) != screen_support_win) {
+        g_message("Could not acquire window manager selection on screen %d",
+                  ob_screen);
+        return FALSE;
+    }
+
+    /* Wait for old window manager to go away */
+    if (current_wm_sn_owner) {
+      XEvent event;
+      gulong wait = 0;
+      const gulong timeout = G_USEC_PER_SEC * 15; /* wait for 15s max */
+
+      while (wait < timeout) {
+          if (XCheckWindowEvent(ob_display, current_wm_sn_owner,
+                                StructureNotifyMask, &event) &&
+              event.type == DestroyNotify)
+              break;
+          g_usleep(G_USEC_PER_SEC / 10);
+          wait += G_USEC_PER_SEC / 10;
+      }
+
+      if (wait >= timeout) {
+          g_message("Timeout expired while waiting for the current WM to die "
+                    "on screen %d", ob_screen);
+          return FALSE;
+      }
+    }
+
+    /* Send client message indicating that we are now the WM */
+    prop_message(RootWindow(ob_display, ob_screen), prop_atoms.manager,
+                 timestamp, wm_sn_atom, 0, 0, SubstructureNotifyMask);
+
+
+    return TRUE;
 }
 
 gboolean screen_annex()
 {
-    XErrorHandler old;
+    XSetWindowAttributes attrib;
     pid_t pid;
-    int i, num_support;
+    gint i, num_support;
     guint32 *supported;
 
-    running = FALSE;
-    old = XSetErrorHandler(another_running);
-    XSelectInput(ob_display, ob_root, ROOT_EVENTMASK);
-    XSync(ob_display, FALSE);
-    XSetErrorHandler(old);
-    if (running)
+    /* create the netwm support window */
+    attrib.override_redirect = TRUE;
+    screen_support_win = XCreateWindow(ob_display,
+                                       RootWindow(ob_display, ob_screen),
+                                       -100, -100, 1, 1, 0,
+                                       CopyFromParent, InputOutput,
+                                       CopyFromParent,
+                                       CWOverrideRedirect, &attrib);
+    XMapRaised(ob_display, screen_support_win);
+
+    if (!replace_wm()) {
+        XDestroyWindow(ob_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) {
+        g_message("A window manager is already running on screen %d",
+                  ob_screen);
+
+        XDestroyWindow(ob_display, screen_support_win);
        return FALSE;
+    }
+
 
     g_message("Managing screen %d", ob_screen);
 
@@ -84,17 +179,17 @@ gboolean screen_annex()
 
     /* set the OPENBOX_PID hint */
     pid = getpid();
-    PROP_SET32(ob_root, openbox_pid, cardinal, pid);
-
-    /* create the netwm support window */
-    support_window = XCreateSimpleWindow(ob_display, ob_root, 0,0,1,1,0,0,0);
+    PROP_SET32(RootWindow(ob_display, ob_screen),
+               openbox_pid, cardinal, pid);
 
     /* set supporting window */
-    PROP_SET32(ob_root, net_supporting_wm_check, window, support_window);
+    PROP_SET32(RootWindow(ob_display, ob_screen),
+               net_supporting_wm_check, window, screen_support_win);
 
     /* set properties on the supporting window */
-    PROP_SETS(support_window, net_wm_name, "Openbox");
-    PROP_SET32(support_window, net_supporting_wm_check, window,support_window);
+    PROP_SETS(screen_support_win, net_wm_name, "Openbox");
+    PROP_SET32(screen_support_win, net_supporting_wm_check,
+               window, screen_support_win);
 
     /* set the _NET_SUPPORTED_ATOMS hint */
     num_support = 61;
@@ -166,7 +261,8 @@ gboolean screen_annex()
   supported[] = prop_atoms.net_wm_action_stick;
 */
 
-    PROP_SETA32(ob_root, net_supported, atom, supported, num_support);
+    PROP_SETA32(RootWindow(ob_display, ob_screen),
+                net_supported, atom, supported, num_support);
     g_free(supported);
 
     return TRUE;
@@ -186,7 +282,8 @@ void screen_startup()
     for (i = 0, it = config_desktops_names; it; ++i, it = it->next)
         screen_desktop_names[i] = it->data; /* dont strdup */
     screen_desktop_names[i] = NULL;
-    PROP_SETSS(ob_root, net_desktop_names, screen_desktop_names);
+    PROP_SETSS(RootWindow(ob_display, ob_screen),
+               net_desktop_names, screen_desktop_names);
     g_free(screen_desktop_names); /* dont free the individual strings */
     screen_desktop_names = NULL;
 
@@ -199,7 +296,8 @@ void screen_startup()
 
     /* don't start in showing-desktop mode */
     screen_showing_desktop = FALSE;
-    PROP_SET32(ob_root, net_showing_desktop, cardinal, screen_showing_desktop);
+    PROP_SET32(RootWindow(ob_display, ob_screen),
+               net_showing_desktop, cardinal, screen_showing_desktop);
 
     screen_update_layout();
 
@@ -214,13 +312,16 @@ void screen_shutdown()
 {
     Rect **r;
 
-    XSelectInput(ob_display, ob_root, NoEventMask);
+    XSelectInput(ob_display, RootWindow(ob_display, ob_screen), NoEventMask);
 
-    PROP_ERASE(ob_root, openbox_pid); /* we're not running here no more! */
-    PROP_ERASE(ob_root, net_supported); /* not without us */
-    PROP_ERASE(ob_root, net_showing_desktop); /* don't keep this mode */
+    /* we're not running here no more! */
+    PROP_ERASE(RootWindow(ob_display, ob_screen), openbox_pid);
+    /* not without us */
+    PROP_ERASE(RootWindow(ob_display, ob_screen), net_supported);
+    /* don't keep this mode */
+    PROP_ERASE(RootWindow(ob_display, ob_screen), net_showing_desktop);
 
-    XDestroyWindow(ob_display, support_window);
+    XDestroyWindow(ob_display, screen_support_win);
 
     g_strfreev(screen_desktop_names);
     for (r = area; *r; ++r)
@@ -245,9 +346,10 @@ 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(ob_root, net_desktop_geometry, cardinal, geometry, 2);
+    PROP_SETA32(RootWindow(ob_display, ob_screen),
+                net_desktop_geometry, cardinal, geometry, 2);
 
-    if (ob_state == OB_STATE_STARTING)
+    if (ob_state() == OB_STATE_STARTING)
        return;
 
     dock_configure();
@@ -267,11 +369,13 @@ void screen_set_num_desktops(guint num)
 
     old = screen_num_desktops;
     screen_num_desktops = num;
-    PROP_SET32(ob_root, net_number_of_desktops, cardinal, num);
+    PROP_SET32(RootWindow(ob_display, ob_screen),
+               net_number_of_desktops, cardinal, num);
 
     /* set the viewport hint */
     viewport = g_new0(guint32, num * 2);
-    PROP_SETA32(ob_root, net_desktop_viewport, cardinal, viewport, num * 2);
+    PROP_SETA32(RootWindow(ob_display, ob_screen),
+                net_desktop_viewport, cardinal, viewport, num * 2);
     g_free(viewport);
 
     /* the number of rows/columns will differ */
@@ -292,7 +396,7 @@ void screen_set_num_desktops(guint num)
 
     /* move windows on desktops that will no longer exist! */
     for (it = client_list; it != NULL; it = it->next) {
-        Client *c = it->data;
+        ObClient *c = it->data;
         if (c->desktop >= num && c->desktop != DESKTOP_ALL)
             client_set_desktop(c, num - 1, FALSE);
     }
@@ -317,7 +421,8 @@ void screen_set_desktop(guint num)
 
     old = screen_desktop;
     screen_desktop = num;
-    PROP_SET32(ob_root, net_current_desktop, cardinal, num);
+    PROP_SET32(RootWindow(ob_display, ob_screen),
+               net_current_desktop, cardinal, num);
 
     if (old == num) return;
 
@@ -328,7 +433,7 @@ void screen_set_desktop(guint num)
     /* show windows from top to bottom */
     for (it = stacking_list; it != NULL; it = it->next) {
         if (WINDOW_IS_CLIENT(it->data)) {
-            Client *c = it->data;
+            ObClient *c = it->data;
             if (!c->frame->visible && client_should_show(c))
                 frame_show(c->frame);
         }
@@ -337,7 +442,7 @@ void screen_set_desktop(guint num)
     /* hide windows from bottom to top */
     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
         if (WINDOW_IS_CLIENT(it->data)) {
-            Client *c = it->data;
+            ObClient *c = it->data;
             if (c->frame->visible && !client_should_show(c))
                 frame_hide(c->frame);
         }
@@ -346,9 +451,13 @@ void screen_set_desktop(guint num)
     /* focus the last focused window on the desktop, and ignore enter events
        from the switch so it doesnt mess with the focus */
     while (XCheckTypedEvent(ob_display, EnterNotify, &e));
+#ifdef DEBUG_FOCUS
     g_message("switch fallback");
-    focus_fallback(Fallback_Desktop);
+#endif
+    focus_fallback(OB_FOCUS_FALLBACK_DESKTOP);
+#ifdef DEBUG_FOCUS
     g_message("/switch fallback");
+#endif
 
     dispatch_ob(Event_Ob_Desktop, num, old);
 }
@@ -363,7 +472,8 @@ void screen_update_layout()
     guint num;
     gboolean valid = FALSE;
 
-    if (PROP_GETA32(ob_root, net_desktop_layout, cardinal, &data, &num)) {
+    if (PROP_GETA32(RootWindow(ob_display, ob_screen),
+                    net_desktop_layout, cardinal, &data, &num)) {
         if (num == 3 || num == 4) {
 
             if (data[0] == prop_atoms.net_wm_orientation_vert)
@@ -441,7 +551,8 @@ void screen_update_desktop_names()
     g_strfreev(screen_desktop_names);
     screen_desktop_names = NULL;
 
-    if (PROP_GETSS(ob_root, net_desktop_names, utf8, &screen_desktop_names))
+    if (PROP_GETSS(RootWindow(ob_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;
@@ -466,7 +577,7 @@ void screen_show_desktop(gboolean show)
        /* bottom to top */
        for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
             if (WINDOW_IS_CLIENT(it->data)) {
-                Client *client = it->data;
+                ObClient *client = it->data;
                 if (client->frame->visible && !client_should_show(client))
                     frame_hide(client->frame);
             }
@@ -475,7 +586,7 @@ void screen_show_desktop(gboolean show)
         /* top to bottom */
        for (it = stacking_list; it != NULL; it = it->next) {
             if (WINDOW_IS_CLIENT(it->data)) {
-                Client *client = it->data;
+                ObClient *client = it->data;
                 if (!client->frame->visible && client_should_show(client))
                     frame_show(client->frame);
             }
@@ -485,20 +596,21 @@ void screen_show_desktop(gboolean show)
     if (show) {
         /* focus desktop */
         for (it = focus_order[screen_desktop]; it; it = it->next)
-            if (((Client*)it->data)->type == Type_Desktop &&
+            if (((ObClient*)it->data)->type == OB_CLIENT_TYPE_DESKTOP &&
                 client_focus(it->data))
                 break;
     } else {
-        focus_fallback(Fallback_NoFocus);
+        focus_fallback(OB_FOCUS_FALLBACK_NOFOCUS);
     }
 
     show = !!show; /* make it boolean */
-    PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
+    PROP_SET32(RootWindow(ob_display, ob_screen),
+               net_showing_desktop, cardinal, show);
 
     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
 }
 
-void screen_install_colormap(Client *client, gboolean install)
+void screen_install_colormap(ObClient *client, gboolean install)
 {
     XWindowAttributes wa;
 
@@ -569,7 +681,7 @@ void screen_update_areas()
         /* apply struts */
         STRUT_SET(s, 0, 0, 0, 0);
         for (it = client_list; it; it = it->next)
-            STRUT_ADD(s, ((Client*)it->data)->strut);
+            STRUT_ADD(s, ((ObClient*)it->data)->strut);
         STRUT_ADD(s, dock_strut);
 
         if (s.left) {
@@ -658,7 +770,7 @@ void screen_update_areas()
                 XXX if gunna test this shit, then gotta worry about when
                 the client moves between xinerama heads..
 
-                if (RECT_CONTAINS_RECT(((Client*)it->data)->frame->area,
+                if (RECT_CONTAINS_RECT(((ObClient*)it->data)->frame->area,
                                        area[i][x])) {
 
                 }            
@@ -671,7 +783,7 @@ void screen_update_areas()
         /* the area has changed, adjust all the maximized 
            windows */
         for (it = client_list; it; it = it->next) {
-            Client *c = it->data; 
+            ObClient *c = it->data; 
             if (i < screen_num_desktops) {
                 if (c->desktop == i)
                     client_reconfigure(c);
@@ -686,7 +798,7 @@ void screen_update_areas()
             dims[(i * 4) + 3] = area[i][screen_num_monitors].height;
         }
     }
-    PROP_SETA32(ob_root, net_workarea, cardinal,
+    PROP_SETA32(RootWindow(ob_display, ob_screen), net_workarea, cardinal,
                dims, 4 * screen_num_desktops);
 
     g_free(dims);
@@ -725,10 +837,12 @@ static void set_root_cursor()
 {
 #ifdef USE_LIBSN
         if (sn_busy_cnt)
-            XDefineCursor(ob_display, ob_root, ob_cursor(OB_CURSOR_BUSY));
+            XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
+                          ob_cursor(OB_CURSOR_BUSY));
         else
 #endif
-            XDefineCursor(ob_display, ob_root, ob_cursor(OB_CURSOR_POINTER));
+            XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
+                          ob_cursor(OB_CURSOR_POINTER));
 }
 
 #ifdef USE_LIBSN
@@ -785,3 +899,13 @@ static void sn_event_func(SnMonitorEvent *ev, void *data)
         set_root_cursor();
 }
 #endif
+
+gboolean screen_pointer_pos(int *x, int *y)
+{
+    Window w;
+    int i;
+    guint u;
+
+    return !!XQueryPointer(ob_display, RootWindow(ob_display, ob_screen),
+                           &w, &w, x, y, &i, &i, &u);
+}
This page took 0.030991 seconds and 4 git commands to generate.