going down the order so look for a lower layer

[chaz/openbox] / openbox / stacking.c

diff --git a/openbox/stacking.c b/openbox/stacking.c
index afad8ad0918a77e6328378580eaa3122dfd3fd50..c4fb06a2b3d81bc4cb67d8b9244803acd7b1c893 100644 (file)
--- a/openbox/stacking.c
+++ b/openbox/stacking.c
@@ -25,6 +25,7 @@
 #include "group.h"
 #include "frame.h"
 #include "window.h"
+#include "debug.h"
 
 GList  *stacking_list = NULL;
 
@@ -460,35 +461,140 @@ void stacking_add_nonintrusive(ObWindow *win)
     }
 }
 
-gboolean stacking_occluded(ObClient *client, ObClient *sibling)
+/*! Returns TRUE if client is occluded by the sibling. If sibling is NULL it
+  tries against all other clients.
+*/
+static gboolean stacking_occluded(ObClient *client, ObClient *sibling)
 {
     GList *it;
-    gboolean obscured = FALSE;
+    gboolean occluded = FALSE;
     gboolean found = FALSE;
 
     /* no need for any looping in this case */
     if (sibling && client->layer != sibling->layer)
-        return obscured;
+        return occluded;
 
-    for (it = stacking_list; it; it = g_list_next(it))
+    for (it = stacking_list; it;
+         it = (found ? g_list_previous(it) :g_list_next(it)))
         if (WINDOW_IS_CLIENT(it->data)) {
             ObClient *c = it->data;
             if (found) {
-                if (sibling != NULL) {
-                    if (c == sibling) {
-                        obscured = TRUE;
+                if (RECT_INTERSECTS_RECT(c->frame->area, client->frame->area))
+                {
+                    if (sibling != NULL) {
+                        if (c == sibling) {
+                            occluded = TRUE;
+                            break;
+                        }
+                    }
+                    else if (c->layer == client->layer) {
+                        occluded = TRUE;
                         break;
                     }
+                    else if (c->layer > client->layer)
+                        break; /* we past its layer */
                 }
-                else if (c->layer == client->layer) {
-                    obscured = TRUE;
-                    break;
+            }
+            else if (c == client)
+                found = TRUE;
+        }
+    return occluded;
+}
+
+/*! Returns TRUE if client is occludes the sibling. If sibling is NULL it tries
+  against all other clients.
+*/
+static gboolean stacking_occludes(ObClient *client, ObClient *sibling)
+{
+    GList *it;
+    gboolean occludes = FALSE;
+    gboolean found = FALSE;
+
+    /* no need for any looping in this case */
+    if (sibling && client->layer != sibling->layer)
+        return occludes;
+
+    for (it = stacking_list; it; it = g_list_next(it))
+        if (WINDOW_IS_CLIENT(it->data)) {
+            ObClient *c = it->data;
+            if (found) {
+                if (RECT_INTERSECTS_RECT(c->frame->area, client->frame->area))
+                {
+                    if (sibling != NULL) {
+                        if (c == sibling) {
+                            occludes = TRUE;
+                            break;
+                        }
+                    }
+                    else if (c->layer == client->layer) {
+                        occludes = TRUE;
+                        break;
+                    }
+                    else if (c->layer < client->layer)
+                        break; /* we past its layer */
                 }
-                else if (c->layer > client->layer)
-                    break; /* we past its layer */
             }
             else if (c == client)
                 found = TRUE;
         }
-    return obscured;
+    return occludes;
+}
+
+void stacking_restack_request(ObClient *client, ObClient *sibling,
+                              gint detail, gboolean activate)
+{
+    switch (detail) {
+    case Below:
+        ob_debug("Restack request Below for client %s sibling %s\n",
+                 client->title, sibling ? sibling->title : "(all)");
+        /* just lower it */
+        stacking_lower(CLIENT_AS_WINDOW(client));
+        break;
+    case BottomIf:
+        ob_debug("Restack request BottomIf for client %s sibling "
+                 "%s\n",
+                 client->title, sibling ? sibling->title : "(all)");
+        /* if this client occludes sibling (or anything if NULL), then
+           lower it to the bottom */
+        if (stacking_occludes(client, sibling))
+            stacking_lower(CLIENT_AS_WINDOW(client));
+        break;
+    case Above:
+        ob_debug("Restack request Above for client %s sibling %s\n",
+                 client->title, sibling ? sibling->title : "(all)");
+        if (activate)
+            /* use user=TRUE because it is impossible to get a timestamp
+               for this */
+            client_activate(client, FALSE, TRUE);
+        else
+            stacking_raise(CLIENT_AS_WINDOW(client));
+        break;
+    case TopIf:
+        ob_debug("Restack request TopIf for client %s sibling %s\n",
+                 client->title, sibling ? sibling->title : "(all)");
+        if (stacking_occluded(client, sibling)) {
+            if (activate)
+                /* use user=TRUE because it is impossible to get a timestamp
+                   for this */
+                client_activate(client, FALSE, TRUE);
+            else
+                stacking_raise(CLIENT_AS_WINDOW(client));
+        }
+        break;
+    case Opposite:
+        ob_debug("Restack request Opposite for client %s sibling "
+                 "%s\n",
+                 client->title, sibling ? sibling->title : "(all)");
+        if (stacking_occluded(client, sibling)) {
+            if (activate)
+                /* use user=TRUE because it is impossible to get a timestamp
+                   for this */
+                client_activate(client, FALSE, TRUE);
+            else
+                stacking_raise(CLIENT_AS_WINDOW(client));
+        }
+        else if (stacking_occludes(client, sibling))
+            stacking_lower(CLIENT_AS_WINDOW(client));
+        break;
+    }
 }