===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/layout.c,v
retrieving revision 1.35
retrieving revision 1.36
diff -u -r1.35 -r1.36
--- src/usr.bin/tmux/layout.c	2018/03/23 07:44:44	1.35
+++ src/usr.bin/tmux/layout.c	2018/06/08 20:54:22	1.36
@@ -1,4 +1,4 @@
-/* $OpenBSD: layout.c,v 1.35 2018/03/23 07:44:44 nicm Exp $ */
+/* $OpenBSD: layout.c,v 1.36 2018/06/08 20:54:22 nicm Exp $ */
 
 /*
  * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -127,6 +127,42 @@
 	}
 }
 
+struct layout_cell *
+layout_search_by_border(struct layout_cell *lc, u_int x, u_int y)
+{
+	struct layout_cell	*lcchild, *last = NULL;
+
+	TAILQ_FOREACH(lcchild, &lc->cells, entry) {
+		if (x >= lcchild->xoff && x < lcchild->xoff + lcchild->sx &&
+		    y >= lcchild->yoff && y < lcchild->yoff + lcchild->sy) {
+			/* Inside the cell - recurse. */
+			return (layout_search_by_border(lcchild, x, y));
+		}
+
+		if (last == NULL) {
+			last = lcchild;
+			continue;
+		}
+
+		switch (lc->type) {
+		case LAYOUT_LEFTRIGHT:
+			if (x < lcchild->xoff && x >= last->xoff + last->sx)
+				return (last);
+			break;
+		case LAYOUT_TOPBOTTOM:
+			if (y < lcchild->yoff && y >= last->yoff + last->sy)
+				return (last);
+			break;
+		case LAYOUT_WINDOWPANE:
+			break;
+		}
+
+		last = lcchild;
+	}
+
+	return (NULL);
+}
+
 void
 layout_set_size(struct layout_cell *lc, u_int sx, u_int sy, u_int xoff,
     u_int yoff)
@@ -550,14 +586,40 @@
 	layout_resize_pane(wp, type, change, 1);
 }
 
+void
+layout_resize_layout(struct window *w, struct layout_cell *lc,
+    enum layout_type type, int change, int opposite)
+{
+	int	needed, size;
+
+	/* Grow or shrink the cell. */
+	needed = change;
+	while (needed != 0) {
+		if (change > 0) {
+			size = layout_resize_pane_grow(w, lc, type, needed,
+			    opposite);
+			needed -= size;
+		} else {
+			size = layout_resize_pane_shrink(w, lc, type, needed);
+			needed += size;
+		}
+
+		if (size == 0)	/* no more change possible */
+			break;
+	}
+
+	/* Fix cell offsets. */
+	layout_fix_offsets(w->layout_root);
+	layout_fix_panes(w, w->sx, w->sy);
+	notify_window("window-layout-changed", w);
+}
+
 /* Resize a single pane within the layout. */
 void
 layout_resize_pane(struct window_pane *wp, enum layout_type type, int change,
     int opposite)
 {
-	struct window		*w = wp->window;
 	struct layout_cell	*lc, *lcparent;
-	int			 needed, size;
 
 	lc = wp->layout_cell;
 
@@ -574,26 +636,7 @@
 	if (lc == TAILQ_LAST(&lcparent->cells, layout_cells))
 		lc = TAILQ_PREV(lc, layout_cells, entry);
 
-	/* Grow or shrink the cell. */
-	needed = change;
-	while (needed != 0) {
-		if (change > 0) {
-			size = layout_resize_pane_grow(w, lc, type, needed,
-			    opposite);
-			needed -= size;
-		} else {
-			size = layout_resize_pane_shrink(w, lc, type, needed);
-			needed += size;
-		}
-
-		if (size == 0)	/* no more change possible */
-			break;
-	}
-
-	/* Fix cell offsets. */
-	layout_fix_offsets(wp->window->layout_root);
-	layout_fix_panes(wp->window, wp->window->sx, wp->window->sy);
-	notify_window("window-layout-changed", wp->window);
+	layout_resize_layout(wp->window, lc, type, change, opposite);
 }
 
 /* Helper function to grow pane. */