Composite interface, along with {@link CompositeContext}, defines the methods to compose a draw primitive with the underlying graphics area. After the Composite is set in the {@link Graphics2D} context, it combines a shape, text, or an imagebeing rendered with the colors that have already been rendered according to pre-defined rules. The classes implementing this interface provide the rules and a method to create the context for a particular operation. CompositeContext is an environment used by the compositing operation, which is created by the Graphics2D prior to the start of the operation. CompositeContext contains private information and resources needed for a compositing operation. When the CompositeContext is no longer needed, the Graphics2D object disposes of it in order to reclaim resources allocated for the operation. Instances of classes implementing Composite must be immutable because the Graphics2D does not clone these objects when they are set as an attribute with the setComposite method or when the Graphics2D object is cloned. This is to avoid undefined rendering behavior of Graphics2D, resulting from the modification of the Composite object after it has been set in the Graphics2D context.
Since this interface must expose the contents of pixels on the target device or image to potentially arbitrary code, the use of custom objects which implement this interface when rendering directly to a screen device is governed by the readDisplayPixels {@link AWTPermission}. The permission check will occur when such a custom object is passed to the setComposite method of a Graphics2D retrieved from a {@link Component}.
@see AlphaComposite
@see CompositeContext
@see Graphics2D#setComposite
Represents the category of HL7 data types that contain more than one component (e.g. CE). Implementing classes (i.e. composite data types) should initialize their components either when they are initialized or when they are first accessed. Only leaf values (values of primitives) should ever be returned as null.
@author Bryan Tripp (bryan_tripp@sourceforge.net)The composite is useful for creating a single widget out of an aggregate of multiple other widgets contained in a single panel.
Composite interface, along with {@link CompositeContext}, defines the methods to compose a draw primitive with the underlying graphics area. After the Composite is set in the {@link Graphics2D} context, it combines a shape, text, or an imagebeing rendered with the colors that have already been rendered according to pre-defined rules. The classes implementing this interface provide the rules and a method to create the context for a particular operation. CompositeContext is an environment used by the compositing operation, which is created by the Graphics2D prior to the start of the operation. CompositeContext contains private information and resources needed for a compositing operation. When the CompositeContext is no longer needed, the Graphics2D object disposes of it in order to reclaim resources allocated for the operation. Instances of classes implementing Composite must be immutable because the Graphics2D does not clone these objects when they are set as an attribute with the setComposite method or when the Graphics2D object is cloned. This is to avoid undefined rendering behavior of Graphics2D, resulting from the modification of the Composite object after it has been set in the Graphics2D context.
Since this interface must expose the contents of pixels on the target device or image to potentially arbitrary code, the use of custom objects which implement this interface when rendering directly to a screen device is governed by the readDisplayPixels {@link AWTPermission}. The permission check will occur when such a custom object is passed to the setComposite method of a Graphics2D retrieved from a {@link Component}.
@see AlphaComposite
@see CompositeContext
@see Graphics2D#setComposite
@version 10 Feb 1997
See the Panel component for a default implementation of a single-child container component.
This class provides no benefit if you are providing a custom client/server synchronization peer. If you wish to create a component with a custom client/server synchronization peer, Component itself should be derived instead of this class.
Paintable that contains other Paintables, allowing you to create complex Paintables (composite like pattern). Children are visited (painted) in the order they were added.
Paintables are not aware of parents, so all positioning is absolute.
@author Kristof Heirwegh
This class is can be used a either an abstract or concrete holder of other HTML elements. Used directly, it allow multiple HTML Elements to be added which are produced sequentially. Derived used of Composite may wrap each contain Element in special purpose HTML tags (e.g. list).
Notes
Elements are added to the Composite either as HTML Elements or as Strings. Other objects added to the Composite are converted to Strings
@see Element
@version $Id: Composite.java,v 1.6 2004/05/09 20:31:28 gregwilkins Exp $
@author Greg Wilkins
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