# HG changeset patch
# Parent 27319399f7f11ae9f63cb670cb040ce873cbc095
-Add: ToggleTextDirection() changes the current text direction and ReInit all opened windows if the 'gui.developer' setting is set.

diff --git a/src/toolbar_gui.cpp b/src/toolbar_gui.cpp
--- a/src/toolbar_gui.cpp
+++ b/src/toolbar_gui.cpp
@@ -1126,6 +1126,23 @@ void ToggleDirtyBlocks()
 }
 
 /**
+ * Toggle the text direction.
+ * @note has only effect when \c developer setting is set.
+ *
+ * \c ReInit() is called for all windows to redraw them in the new text direction.
+ */
+void ToggleTextDirection()
+{
+	if (_settings_client.gui.developer) {
+		_current_text_dir = (_current_text_dir == TD_LTR) ? TD_RTL : TD_LTR;
+		Window *w;
+		FOR_ALL_WINDOWS_FROM_BACK(w) {
+			w->ReInit();
+		}
+	}
+}
+
+/**
  * Choose the proper callback function for the main toolbar's help menu.
  * @param index The menu index which was selected.
  * @return CBF_NONE
diff --git a/src/toolbar_gui.h b/src/toolbar_gui.h
--- a/src/toolbar_gui.h
+++ b/src/toolbar_gui.h
@@ -15,5 +15,6 @@
 void AllocateToolbar();
 void ToggleBoundingBoxes();
 void ToggleDirtyBlocks();
+void ToggleTextDirection();
 
 #endif /* TOOLBAR_GUI_H */