Bugfix: Correctly check boundaries and reassign floating windows when moving (Thanks xpt)

Fixes: #592

include/floating.h

@@ -137,4 +137,13 @@ void drag_pointer(Con *con, const xcb_button_press_event_t *event,
                   xcb_window_t confine_to, border_t border, callback_t callback,
                   const void *extra);
 
+/**
+ * Repositions the CT_FLOATING_CON to have the coordinates specified by
+ * newrect, but only if the coordinates are not out-of-bounds. Also reassigns
+ * the floating con to a different workspace if this move was across different
+ * outputs.
+ *
+ */
+void floating_reposition(Con *con, Rect newrect);
+
 #endif

src/cmdparse.y

@@ -780,21 +780,22 @@ move:
         printf("moving in direction %d\n", direction);
         if (con_is_floating(focused)) {
             printf("floating move with %d pixels\n", px);
+            Rect newrect = focused->parent->rect;
             if (direction == TOK_LEFT) {
-                focused->parent->rect.x -= px;
+                newrect.x -= px;
             } else if (direction == TOK_RIGHT) {
-                focused->parent->rect.x += px;
+                newrect.x += px;
             } else if (direction == TOK_UP) {
-                focused->parent->rect.y -= px;
+                newrect.y -= px;
             } else if (direction == TOK_DOWN) {
-                focused->parent->rect.y += px;
+                newrect.y += px;
             }
+            floating_reposition(focused->parent, newrect);
         } else {
             tree_move(direction);
-        }
-
             tree_render();
         }
+    }
     | TOK_MOVE TOK_WORKSPACE STR
     {
         owindow *current;

src/floating.c

@@ -514,6 +514,31 @@ void drag_pointer(Con *con, const xcb_button_press_event_t *event, xcb_window_t
     xcb_flush(conn);
 }
 
+/*
+ * Repositions the CT_FLOATING_CON to have the coordinates specified by
+ * newrect, but only if the coordinates are not out-of-bounds. Also reassigns
+ * the floating con to a different workspace if this move was across different
+ * outputs.
+ *
+ */
+void floating_reposition(Con *con, Rect newrect) {
+    /* Sanity check: Are the new coordinates on any output? If not, we
+     * ignore that request. */
+    Output *output = get_output_containing(
+        newrect.x + (newrect.width / 2),
+        newrect.y + (newrect.height / 2));
+
+    if (!output) {
+        ELOG("No output found at destination coordinates. Not repositioning.\n");
+        return;
+    }
+
+    con->rect = newrect;
+
+    floating_maybe_reassign_ws(con);
+    tree_render();
+}
+
 #if 0
 /*
  * Moves the client 10px to the specified direction.

src/handlers.c

@@ -400,23 +400,9 @@ static int handle_configure_request(xcb_configure_request_event_t *event) {
                  event->height, newrect.height, con->border_width);
         }
 
-        /* Sanity check: Are the new coordinates on any output? If not, we
-         * ignore that request. */
-        Output *output = get_output_containing(
-            newrect.x + (newrect.width / 2),
-            newrect.y + (newrect.height / 2));
-
-        if (!output) {
-            ELOG("No output found at destination coordinates. Ignoring this ConfigureRequest.\n");
-            fake_absolute_configure_notify(con);
-            return 0;
-        }
-
         DLOG("Container is a floating leaf node, will do that.\n");
-        floatingcon->rect = newrect;
-
-        floating_maybe_reassign_ws(floatingcon);
-        tree_render();
+        floating_reposition(floatingcon, newrect);
+        return 1;
     }
 
     /* Dock windows can be reconfigured in their height */