expo: Implement a box
It is useful to be able to draw a box around elements in the menu. Add
support for an unfilled box with a selectable thickness.
Note that there is no support for selecting the colour for any expo
objects yet.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/doc/develop/expo.rst b/doc/develop/expo.rst
index cc7c361..8f63ccb 100644
--- a/doc/develop/expo.rst
+++ b/doc/develop/expo.rst
@@ -65,6 +65,8 @@
A `textline object` contains a label and an editable string.
+A `box object` is a rectangle with a given line width. It is not filled.
+
All components have a name. This is mostly for debugging, so it is easy to see
what object is referred to, although the name is also used for saving values.
Of course the ID numbers can help as well, but they are less easy to