Package org.apache.batik.bridge

Class RepaintManager

java.lang.Object

org.apache.batik.bridge.RepaintManager

public class RepaintManager
extends java.lang.Object

This class manages the rendering of a GVT tree.

Field Summary

Fields

Modifier and Type	Field	Description
protected ImageRenderer	renderer	The renderer used to repaint the buffer.

Constructor Summary

Constructors

Constructor	Description
RepaintManager(ImageRenderer r)	Creates a new repaint manager.

Method Summary

Modifier and Type	Method	Description
java.awt.image.BufferedImage	getOffScreen()	Returns the renderer's offscreen, i.e., the current state as rendered by the associated renderer.
void	setupRenderer(java.awt.geom.AffineTransform u2d, boolean dbr, java.awt.Shape aoi, int width, int height)	Sets up the renderer so that it is ready to render for the new 'context' defined by the user to device transform, double buffering state, area of interest and width/height.
java.util.Collection	updateRendering(java.util.Collection areas)	Updates the rendering buffer.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

renderer

protected ImageRenderer renderer

The renderer used to repaint the buffer.

Constructor Detail

RepaintManager

public RepaintManager(ImageRenderer r)

Creates a new repaint manager.

Method Detail

updateRendering

public java.util.Collection updateRendering(java.util.Collection areas)
                                     throws java.lang.InterruptedException

Updates the rendering buffer.

Parameters:

areas - The areas of interest in renderer space units.

Returns:

the list of the rectangles to repaint.

Throws:

java.lang.InterruptedException

setupRenderer

public void setupRenderer(java.awt.geom.AffineTransform u2d,
                          boolean dbr,
                          java.awt.Shape aoi,
                          int width,
                          int height)

Sets up the renderer so that it is ready to render for the new 'context' defined by the user to device transform, double buffering state, area of interest and width/height.

Parameters:

u2d - The user to device transform.

dbr - Whether the double buffering should be used.

aoi - The area of interest in the renderer space units.

width - The offscreen buffer width.

height - The offscreen buffer width.

getOffScreen

public java.awt.image.BufferedImage getOffScreen()

Returns the renderer's offscreen, i.e., the current state as rendered by the associated renderer.