Package net.targetr.tncaptcha

Class GifSequenceWriter

java.lang.Object

net.targetr.tncaptcha.GifSequenceWriter

public class GifSequenceWriter
extends Object

Utility class for writing a sequence of images as an animated GIF.

Field Summary

Fields

Modifier and Type	Field	Description
protected IIOMetadata	metadata	The metadata associated with the GIF sequence.
protected ImageWriteParam	params	The write parameters for the image writer.
protected ImageWriter	writer	The image writer used to create the GIF sequence.

Constructor Summary

Constructors

Constructor	Description
GifSequenceWriter(ImageOutputStream out, int imageType, int delay, boolean loop)	Constructs a new GifSequenceWriter.

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the GIF sequence writer and finishes writing the sequence.
void	writeToSequence(RenderedImage img)	Writes a new frame to the GIF sequence.

Methods inherited from class java.lang.Object

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

Field Details

writer

protected ImageWriter writer

The image writer used to create the GIF sequence.

params

protected ImageWriteParam params

The write parameters for the image writer.

metadata

protected IIOMetadata metadata

The metadata associated with the GIF sequence.

Constructor Details

GifSequenceWriter

public GifSequenceWriter(ImageOutputStream out,
 int imageType,
 int delay,
 boolean loop)
                  throws IOException

Constructs a new GifSequenceWriter.

Parameters:

out - the output stream

imageType - the type of the image

delay - the delay between frames in milliseconds

loop - whether the sequence should loop continuously

Throws:

IOException - if an I/O error occurs

Method Details

writeToSequence

public void writeToSequence(RenderedImage img)
                     throws IOException

Writes a new frame to the GIF sequence.

Parameters:

img - the image to write

Throws:

IOException - if an I/O error occurs

close

public void close()
           throws IOException

Closes the GIF sequence writer and finishes writing the sequence.

Throws:

IOException - if an I/O error occurs