add code to fallback focus

[chaz/openbox] / openbox / focus.c

diff --git a/openbox/focus.c b/openbox/focus.c
index db78183d8046b62d7b22eb43bc186255883e7e18..a462915740c4e60df713021e5c2f38603eb43fe1 100644 (file)
--- a/openbox/focus.c
+++ b/openbox/focus.c
@@ -1,17 +1,22 @@
+#include "event.h"
+#include "config.h"
 #include "openbox.h"
 #include "client.h"
+#include "frame.h"
 #include "screen.h"
 #include "prop.h"
 #include "dispatch.h"
+#include "focus.h"
 
 #include <X11/Xlib.h>
+#include <glib.h>
 
 Client *focus_client = NULL;
+GList **focus_order = NULL; /* these lists are created when screen_startup
+                               sets the number of desktops */
 
 Window focus_backup = None;
 
-void focus_set_client(Client *client);
-
 void focus_startup()
 {
     /* create the window which gets focus when no clients get it. Have to
@@ -19,6 +24,8 @@ void focus_startup()
        mapped. */
     XSetWindowAttributes attrib;
 
+    focus_client = NULL;
+
     attrib.override_redirect = TRUE;
     focus_backup = XCreateWindow(ob_display, ob_root,
                                 -100, -100, 1, 1, 0, 0, InputOnly,
@@ -29,33 +36,106 @@ void focus_startup()
     focus_set_client(NULL);
 }
 
+void focus_shutdown()
+{
+    guint i;
+
+    for (i = 0; i < screen_num_desktops; ++i)
+        g_list_free(focus_order[i]);
+    g_free(focus_order);
+    focus_order = NULL;
+
+    XDestroyWindow(ob_display, focus_backup);
+
+    /* reset focus to root */
+    XSetInputFocus(ob_display, PointerRoot, RevertToPointerRoot,
+                   event_lasttime);
+}
+
 void focus_set_client(Client *client)
 {
     Window active;
-     
-    /* sometimes this is called with the already-focused window, this is
-       important for the python scripts to work (eg, c = 0 twice). don't just
-       return if _focused_client == c */
+    Client *old;
+    guint desktop;
+
+    if (client == focus_client) return;
 
     /* uninstall the old colormap, and install the new one */
     screen_install_colormap(focus_client, FALSE);
     screen_install_colormap(client, TRUE);
 
-
     if (client == NULL) {
        /* when nothing will be focused, send focus to the backup target */
-       XSetInputFocus(ob_display, focus_backup, RevertToNone, CurrentTime);
+       XSetInputFocus(ob_display, focus_backup, RevertToPointerRoot,
+                       event_lasttime);
     }
 
-    if (focus_client != NULL)
-        dispatch_client(Event_Client_Unfocus, focus_client);
-
+    old = focus_client;
     focus_client = client;
 
+    /* move to the top of the list */
+    if (client != NULL) {
+        desktop = client->desktop;
+        if (desktop == DESKTOP_ALL) desktop = screen_desktop;
+        focus_order[desktop] = g_list_remove(focus_order[desktop], client);
+        focus_order[desktop] = g_list_prepend(focus_order[desktop], client);
+    }
+
     /* set the NET_ACTIVE_WINDOW hint */
     active = client ? client->window : None;
     PROP_SET32(ob_root, net_active_window, window, active);
 
     if (focus_client != NULL)
-        dispatch_client(Event_Client_Focus, focus_client);
+        dispatch_client(Event_Client_Focus, focus_client, 0, 0);
+    if (old != NULL)
+        dispatch_client(Event_Client_Unfocus, old, 0, 0);
+}
+
+static gboolean focus_under_pointer()
+{
+    Window w;
+    int i, x, y;
+    guint u;
+    GList *it;
+
+    if (XQueryPointer(ob_display, ob_root, &w, &w, &x, &y, &i, &i, &u))
+    {
+        for (it = stacking_list; it != NULL; it = it->next) {
+            Client *c = it->data;
+            if (c->desktop == screen_desktop &&
+                RECT_CONTAINS(c->frame->area, x, y))
+                break;
+        }
+        if (it != NULL) {
+            g_message("fallback (pointer) trying %lx", ((Client*)it->data)->window);
+            return client_normal(it->data) && client_focus(it->data);
+        }
+    }
+    return FALSE;
+}
+
+void focus_fallback(gboolean switching_desks)
+{
+    ConfigValue focus_follow;
+    GList *it;
+    gboolean fallback = TRUE;
+
+    if (!switching_desks) {
+        if (!config_get("focusFollowsMouse", Config_Bool, &focus_follow))
+            g_assert_not_reached();
+        if (focus_follow.bool)
+            fallback = !focus_under_pointer();
+    }
+
+    if (fallback) {
+        for (it = focus_order[screen_desktop]; it != NULL; it = it->next)
+            if (it->data != focus_client && client_normal(it->data)) {
+                g_message("fallback trying %lx", ((Client*)it->data)->window);
+                if (client_focus(it->data))
+                    break;
+            }
+    }
+
+    if (it == NULL) /* nothing to focus */
+        focus_set_client(NULL);
 }