getOffsetForCaret method
Returns the offset at which to paint the caret.
The position
parameter must be relative to the node
's content.
Valid only after layout.
Implementation
@override
Offset getOffsetForCaret(TextPosition position) {
final child = childAtPosition(position);
return child.getOffsetForCaret(TextPosition(
offset: position.offset - child.container.offset,
affinity: position.affinity,
)) +
(child.parentData as BoxParentData).offset;
}