CellArea.getCellAllocation

void getCellAllocation(gtk.cell_area_context.CellAreaContext context,  gtk.widget.Widget widget,  gtk.cell_renderer.CellRenderer renderer,  gdk.rectangle.Rectangle cellArea,  out  gdk.rectangle.Rectangle allocation)

Derives the allocation of renderer inside area if area were to be rendered in cell_area.

Parameters

`context`	the [gtk.cell_area.CellArea]Context used to hold sizes for area.
`widget`	the [gtk.widget.Widget] that area is rendering on
`renderer`	the [gtk.cell_renderer.CellRenderer] to get the allocation for
`cellArea`	the whole allocated area for area in widget for this row
`allocation`	where to store the allocation for renderer