Obtains the width and height needed to render the column. This is used primarily by the GtkTreeView.
location to return x offset of a cell relative to @cell_area
location to return y offset of a cell relative to @cell_area
location to return width needed to render a cell
location to return height needed to render a cell
See Implementation
Obtains the width and height needed to render the column. This is used primarily by the GtkTreeView.