## Package org.opengis.go.display.canvas

Interface Summary
Canvas: `Canvas` defines a common abstraction for implementations that manage the display and user manipulation of `Graphic` instances.
CanvasController: The `CanvasController` interface serves as the token in the `CanvasController <--> Canvas` interaction.
CanvasHandler: The `CanvasHandler` interface provides programmers with a mechanism to change `Canvas` properties.
CanvasListener: The one method in this interface is called by a `Canvas` when its state has changed.
CanvasState: Instances of this interface (and its sub-interfaces) describe the current state of a `Canvas`.

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