expo: Support simple themes
It is a pain to manually set the fonts of all objects to be consistent.
Some spacing settings are also better set globally than by manually
positioning each object.
Add a 'theme' to the expo, to hold this information. For now it includes
only the font size.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/doc/develop/expo.rst b/doc/develop/expo.rst
index 54861b9..2f48828 100644
--- a/doc/develop/expo.rst
+++ b/doc/develop/expo.rst
@@ -155,8 +155,13 @@
Themes
------
-Expo does not itself support themes. The bootflow_menu implement supposed a
-basic theme, applying font sizes to the various text objects in the expo.
+Expo supports simple themes, for setting the font size, for example. Use the
+expo_apply_theme() function to load a theme, passing a node with the required
+properties:
+
+font-size
+ Font size to use for all text (type: u32)
+
API documentation
-----------------