Java 2D API: 2 - - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

Java 2D^TM API

2.5 Defining Custom Composition Rules

You can create an entirely new type of compositing operation by implementing the Composite and CompositeContext interfaces. A Composite object provides a CompositeContext object that actually holds the state and performs the compositing work. Multiple CompositeContext objects can be created from one Composite object to maintain the separate states in a multithreaded environment.

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