getRectForPosition abstract method
Returns the bounding box around the given position, within the associated
component, or null if no corresponding component can be found, or
the corresponding component has not yet been laid out.
For example, given a document layout that contains a text component that
says "Hello, world", calling getRectForPosition() for the third character
in that text component would return a bounding box for the character "l".
Implementation
Rect? getRectForPosition(DocumentPosition position);