Bugfix: Check if a floating window’s coordinates are within a different workspace when managing (Thanks Merovius)

Fixes: #297

include/floating.h

@@ -59,6 +59,13 @@ void toggle_floating_mode(Con *con, bool automatic);
  */
 void floating_raise_con(Con *con);
 
+/**
+ * Checks if con’s coordinates are within its workspace and re-assigns it to
+ * the actual workspace if not.
+ *
+ */
+bool floating_maybe_reassign_ws(Con *con);
+
 #if 0
 /**
  * Removes the floating client from its workspace and attaches it to the new

src/floating.c

@@ -156,6 +156,8 @@ void floating_enable(Con *con, bool automatic) {
     // TODO: don’t influence focus handling when Con was not focused before.
     if (set_focus)
         con_focus(con);
+
+    floating_maybe_reassign_ws(nc);
 }
 
 void floating_disable(Con *con, bool automatic) {
@@ -225,6 +227,36 @@ void floating_raise_con(Con *con) {
     TAILQ_INSERT_TAIL(&(con->parent->floating_head), con, floating_windows);
 }
 
+/*
+ * Checks if con’s coordinates are within its workspace and re-assigns it to
+ * the actual workspace if not.
+ *
+ */
+bool floating_maybe_reassign_ws(Con *con) {
+    Output *output = get_output_containing(
+        con->rect.x + (con->rect.width / 2),
+        con->rect.y + (con->rect.height / 2));
+
+    if (!output) {
+        ELOG("No output found at destination coordinates?\n");
+        return false;
+    }
+
+    if (con_get_output(con) == output->con) {
+        DLOG("still the same ws\n");
+        return false;
+    }
+
+    DLOG("Need to re-assign!\n");
+
+    Con *content = output_get_content(output->con);
+    Con *ws = TAILQ_FIRST(&(content->nodes_head));
+    DLOG("Moving con %p / %s to workspace %p / %s\n", con, con->name, ws, ws->name);
+    con_move_to_workspace(con, ws);
+    con_focus(con_descend_focused(con));
+    return true;
+}
+
 DRAGGING_CB(drag_window_callback) {
     struct xcb_button_press_event_t *event = extra;
 
@@ -237,27 +269,8 @@ DRAGGING_CB(drag_window_callback) {
     xcb_flush(conn);
 
     /* Check if we cross workspace boundaries while moving */
-    Output *output = get_output_containing(
+    if (!floating_maybe_reassign_ws(con))
-        con->rect.x + (con->rect.width / 2),
-        con->rect.y + (con->rect.height / 2));
-
-    if (!output) {
-        ELOG("No output found at destination coordinates?\n");
         return;
-    }
-
-    if (con_get_output(con) == output->con) {
-        DLOG("still the same ws\n");
-        return;
-    }
-
-    DLOG("Need to re-assign!\n");
-
-    Con *content = output_get_content(output->con);
-    Con *ws = TAILQ_FIRST(&(content->nodes_head));
-    DLOG("Moving con %p / %s to workspace %p / %s\n", con, con->name, ws, ws->name);
-    con_move_to_workspace(con, ws);
-    con_focus(con_descend_focused(con));
     tree_render();
 }