Package net.miginfocom.layout

Class LayoutCallback

  • public abstract class LayoutCallback
extends Object
    A class to extend if you want to provide more control over where a component is placed or the size of it.

    Note! Returned arrays from this class will never be altered. This means that caching of arrays in these methods is OK.

    • Constructor Detail

      • LayoutCallback

        public LayoutCallback()

    • Method Detail

      • getPosition

        public UnitValue[] getPosition​(ComponentWrapper comp)
        Returns a position similar to the "pos" the component constraint.
        Parameters:
        comp - The component wrapper that holds the actual component (JComponent is Swing and Control in SWT). Should not be altered.
        Returns:
        The [x, y, x2, y2] as explained in the documentation for "pos". If null is returned nothing is done and this is the default.
        See Also:
        UnitValue, ConstraintParser.parseUnitValue(String, boolean)

      • getSize

        public BoundSize[] getSize​(ComponentWrapper comp)
        Returns a size similar to the "width" and "height" in the component constraint.
        Parameters:
        comp - The component wrapper that holds the actual component (JComponent is Swing and Control in SWT). Should not be altered.
        Returns:
        The [width, height] as explained in the documentation for "width" and "height". If null is returned nothing is done and this is the default.
        See Also:
        BoundSize, ConstraintParser.parseBoundSize(String, boolean, boolean)

      • correctBounds

        public void correctBounds​(ComponentWrapper comp)
        A last minute change of the bounds. The bound for the layout cycle has been set and you can correct there after any set of rules you like.
        Parameters:
        comp - The component wrapper that holds the actual component (JComponent is Swing and Control in SWT).