Here is a brief description of my implementation.
For me, Focus means Hovered. same thing. So I edited SWidget.h to do that.
was a very simple change.
/** @return True if this widget hovered */
virtual bool IsHovered() const
{
return bIsHovered || HasKeyboardFocus();
}
Keyboard focus is the same for gamepad as well so this works. My buttons then get the Hovered Style through navigation provided I set the User Focus to a button. I made my own subclass of UUserWidget to manage focus, at well as addition and removal from the screen. This class keeps the last focused element. It’s important in large UMGs to call focus when you show and hide panels, but otherwise nagivation works well.
in the Player controller I created an array of Widgets in a sort of stack (it’s not really lifo because you could remove something that’s not at index 0). and this is called by MyUserWidget. This allows me to automatically set the user focus back to the last focussed objects if I close a popup, or if I click outside the area with the mouse. We assume the player doesn’t want to see focus at this point and focus is lost so everything works for them.
in MyGameViewportClient (subclass of GameViewportClient) I override InputAxis and InputKey which allows me to check if I pushed a gamepad or keyboard. This sends a message to my player controller which will refocus on the last element based on the Widget on top of my stack.
Hope that helps and I’m always ready to talk about it if you have questions or share some code.