Package ch.bailu.gtk.gtk

Interface Overlay.OnGetChildPosition

Enclosing class:
Overlay
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface public static interface Overlay.OnGetChildPosition

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    onGetChildPosition(Widget widget, Rectangle allocation)
    Emitted to determine the position and size of any overlay
    child widgets.

  • Method Details

    • onGetChildPosition

      boolean onGetChildPosition(@Nonnull Widget widget, @Nonnull Rectangle allocation)
      Emitted to determine the position and size of any overlay
      child widgets.

      A handler for this signal should fill @allocation with
      the desired position and size for @widget, relative to
      the 'main' child of @overlay.

      The default handler for this signal uses the @widget's
      halign and valign properties to determine the position
      and gives the widget its natural size (except that an
      alignment of %GTK_ALIGN_FILL will cause the overlay to
      be full-width/height). If the main child is a
      `GtkScrolledWindow`, the overlays are placed relative
      to its contents.
      Parameters:
      widget - the child widget to position
      allocation - return location for the allocation
      Returns:
      %TRUE if the @allocation has been filled