java.awt.image.renderable

Class RenderContext

java.lang.Object

java.awt.image.renderable.RenderContext

All Implemented Interfaces:

Cloneable

public class RenderContext
extends Object
implements Cloneable

A RenderContext encapsulates the information needed to produce a specific rendering from a RenderableImage. It contains the area to be rendered specified in rendering-independent terms, the resolution at which the rendering is to be performed, and hints used to control the rendering process.

Users create RenderContexts and pass them to the RenderableImage via the createRendering method. Most of the methods of RenderContexts are not meant to be used directly by applications, but by the RenderableImage and operator classes to which it is passed.

The AffineTransform parameter passed into and out of this class are cloned. The RenderingHints and Shape parameters are not necessarily cloneable and are therefore only reference copied. Altering RenderingHints or Shape instances that are in use by instances of RenderContext may have undesired side effects.

Constructor Summary

Constructors

Constructor	Description
RenderContext(AffineTransform usr2dev)	Constructs a RenderContext with a given transform.
RenderContext(AffineTransform usr2dev, RenderingHints hints)	Constructs a RenderContext with a given transform and rendering hints.
RenderContext(AffineTransform usr2dev, Shape aoi)	Constructs a RenderContext with a given transform and area of interest.
RenderContext(AffineTransform usr2dev, Shape aoi, RenderingHints hints)	Constructs a RenderContext with a given transform.

Method Summary

Modifier and Type	Method	Description
Object	clone()	Makes a copy of a RenderContext.
void	concatenateTransform(AffineTransform modTransform)	Modifies the current user-to-device transform by appending another transform.
void	concetenateTransform(AffineTransform modTransform)	Deprecated. replaced by concatenateTransform(AffineTransform).
Shape	getAreaOfInterest()	Gets the ares of interest currently contained in the RenderContext.
RenderingHints	getRenderingHints()	Gets the rendering hints of this RenderContext.
AffineTransform	getTransform()	Gets the current user-to-device AffineTransform.
void	preConcatenateTransform(AffineTransform modTransform)	Modifies the current user-to-device transform by prepending another transform.
void	preConcetenateTransform(AffineTransform modTransform)	Deprecated. replaced by preConcatenateTransform(AffineTransform).
void	setAreaOfInterest(