Module org.sejda.core.writer

Package org.sejda.core.writer.imageio

Class PngImageWriter

java.lang.Object

org.sejda.core.writer.imageio.PngImageWriter

All Implemented Interfaces:

Closeable, AutoCloseable, ImageWriter<PdfToPngParameters>

public class PngImageWriter
extends Object

png image writer using ImageIO

Author:

Andrea Vacondio

Field Summary

Fields

Modifier and Type	Field	Description
protected final ImageWriter	writer

Constructor Summary

Constructors

Constructor	Description
PngImageWriter()

Method Summary

Modifier and Type	Method	Description
void	close()
void	closeDestination()	Close the previously opened destination.
IIOMetadata	newImageMetadata(RenderedImage image, PdfToPngParameters params, ImageWriteParam writerParams)
void	openDestination(File file, PdfToPngParameters params)	Open the provided destination where image/s will be written to.
boolean	supportMultiImage()
void	write(RenderedImage image, PdfToPngParameters params)	Writes the given image to the previously opened destination.

Methods inherited from class java.lang.Object

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

Field Details

writer

protected final ImageWriter writer

Constructor Details

PngImageWriter

public PngImageWriter()

Method Details

write

public void write(RenderedImage image,
 PdfToPngParameters params)
           throws TaskIOException

Description copied from interface: ImageWriter

Writes the given image to the previously opened destination.

Parameters:

image - image to write.

params - task parameter instance.

Throws:

TaskIOException

supportMultiImage

public boolean supportMultiImage()

Returns:

true if the writer can write multiple images into the same image file. If a writer supports multiple images the write method ca be called multiple times once the write destination is opened.

newImageMetadata

public IIOMetadata newImageMetadata(RenderedImage image,
 PdfToPngParameters params,
 ImageWriteParam writerParams)

Parameters:

image -

params -

writerParams -

Returns:

metadata for the ImageWriter

openDestination

public void openDestination(File file,
 PdfToPngParameters params)
                     throws TaskIOException

Description copied from interface: ImageWriter

Open the provided destination where image/s will be written to. This method must be called before ImageWriter.write(RenderedImage, PdfToImageParameters) in order to be able to write images.

Specified by:

openDestination in interface ImageWriter<T extends PdfToImageParameters>

Parameters:

file - file where the image/s will be written.

params - task parameter instance.

Throws:

TaskIOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException

closeDestination

public void closeDestination()
                      throws TaskIOException

Description copied from interface: ImageWriter

Close the previously opened destination.

Specified by:

closeDestination in interface ImageWriter<T extends PdfToImageParameters>

Throws:

TaskIOException