Enumeration for the position of the text hint, includes the following:
screenCenter: Center of the screen
widgetTopCenter: Centered at the top of the target area
widgetTopFit: Top of the target area with adaptive fitting
widgetBottomCenter: Centered at the bottom of the target area
widgetBottomFit: Bottom of the target area with adaptive fitting
auto: Automatically determined based on the position of your component and the dimensions of the text