Get whether the renderer is activatable at the location provided. This is called from [class@Gutter] to determine whether a renderer is activatable using the mouse pointer.
a #GtkTextIter at the start of the line to be activated
a #GdkRectangle of the cell area to be activated
%TRUE if the renderer can be activated, %FALSE otherwise
See Implementation
Get whether the renderer is activatable at the location provided. This is called from [class@Gutter] to determine whether a renderer is activatable using the mouse pointer.