uk.co.javagear
Class FastImage

java.lang.Object
  uk.co.javagear.FastImage

All Implemented Interfaces:

java.awt.image.ImageProducer

public class FastImage
extends java.lang.Object
implements java.awt.image.ImageProducer

FastImage implements ImageProducer and is used to reconstruct the image whenever it is needed.

Version:

18th January 2003

Author:

Copyright (C) 2003 Chris White

Field Summary

private java.awt.image.ImageConsumer	consumer Image consumer.
private int	height Image height.
private java.awt.Image	image Image data.
private java.awt.image.DirectColorModel	model Direct color model (32 bits).
private int	width Image width.

Constructor Summary

FastImage(int w, int h)
Construct a FastImage.

Method Summary

void	addConsumer(java.awt.image.ImageConsumer ic) Registers an ImageConsumer with the ImageProducer for access to the image data during a later reconstruction of the Image.
boolean	isConsumer(java.awt.image.ImageConsumer ic) Check if consumer is already registered.
void	paint(java.awt.Graphics g, int xOffset, int yOffset, int xScale, int yScale) Paint the FastImage.
void	paint(java.awt.Graphics g, int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4) Paint the FastImage.
void	removeConsumer(java.awt.image.ImageConsumer ic) Does nothing.
void	requestTopDownLeftRightResend(java.awt.image.ImageConsumer ic) Does nothing.
void	startProduction(java.awt.image.ImageConsumer ic) Registers the specified ImageConsumer object as a consumer and starts an immediate reconstruction of the image data which will then be delivered to this consumer and any other consumer which might have already been registered with the producer.
void	update(int[] pixels, int offset) Update the FastImage with new pixel data.

Methods inherited from class java.lang.Object

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

Field Detail

width

private int width

Image width.

height

private int height

Image height.

image

private java.awt.Image image

Image data.

consumer

private java.awt.image.ImageConsumer consumer

Image consumer.

model

private java.awt.image.DirectColorModel model

Direct color model (32 bits).

Constructor Detail

FastImage

public FastImage(int w,
                 int h)

Construct a FastImage.

Parameters:

w - Width of Image

h - Height of Image

Method Detail

update

public void update(int[] pixels,
                   int offset)

Update the FastImage with new pixel data.

Parameters:

pixels - pixel array.

offset - offset into pixel array.

paint

public void paint(java.awt.Graphics g,
                  int xOffset,
                  int yOffset,
                  int xScale,
                  int yScale)

Paint the FastImage.

Parameters:

g - graphics context

xOffset - X Offset at which to paint image at

yOffset - Y Offset at which to paint image at

xScale - X Scale Factor

yScale - Y Scale Factor

paint

public void paint(java.awt.Graphics g,
                  int x1,
                  int y1,
                  int x2,
                  int y2,
                  int x3,
                  int y3,
                  int x4,
                  int y4)

Paint the FastImage.

Parameters:

g - Graphics context

x1 - Destination top left corner

y1 - Destination top left corner

x2 - Destination bottom right corner

y2 - Destination bottom right corner

x3 - Source top left corner

y3 - Source top left corner

x4 - Source bottom right corner

y4 - Source bottom right corner

addConsumer

public void addConsumer(java.awt.image.ImageConsumer ic)

Registers an ImageConsumer with the ImageProducer for access to the image data during a later reconstruction of the Image.

Specified by:

addConsumer in interface java.awt.image.ImageProducer

Parameters:

ic - the specified ImageConsumer

isConsumer

public boolean isConsumer(java.awt.image.ImageConsumer ic)

Check if consumer is already registered.

Specified by:

isConsumer in interface java.awt.image.ImageProducer

Parameters:

ic - an instance of ImageConsumer.

Returns:

always returns true

startProduction

public void startProduction(java.awt.image.ImageConsumer ic)

Registers the specified ImageConsumer object as a consumer and starts an immediate reconstruction of the image data which will then be delivered to this consumer and any other consumer which might have already been registered with the producer.

Specified by:

startProduction in interface java.awt.image.ImageProducer

Parameters:

ic - the specified ImageConsumer

removeConsumer

public void removeConsumer(java.awt.image.ImageConsumer ic)

Does nothing.

Specified by:

removeConsumer in interface java.awt.image.ImageProducer

Parameters:

ic - an instance of ImageConsumer.

requestTopDownLeftRightResend

public void requestTopDownLeftRightResend(java.awt.image.ImageConsumer ic)

Does nothing.

Specified by:

requestTopDownLeftRightResend in interface java.awt.image.ImageProducer

Parameters:

ic - an instance of ImageConsumer.