Package com.luciad.wms.server.viewencoder

Class TLcdGXYViewPNGEncoder

java.lang.Object

com.luciad.wms.server.viewencoder.TLcdGXYViewPNGEncoder

All Implemented Interfaces:

ILcdGXYViewEncoder, ILcdWMSFeatureInfoRequestEncoder

@LcdService(service=ILcdGXYViewEncoder.class,
            priority=5000)
public class TLcdGXYViewPNGEncoder
extends Object
implements ILcdGXYViewEncoder, ILcdWMSFeatureInfoRequestEncoder

Implementation of ILcdGXYViewEncoder and ILcdWMSFeatureInfoRequestEncoder that can encode a ILcdGXYView as PNG, with or without selection.

This encoder uses the ObjectPlanet PNG encoder library.

This view encoder allows to set the compression level (see setCompressionLevel(int), getCompressionLevel()). This make it possible to determine a trade-off between compression and speed. The possible values are [0 - 9], with 0 indicating no compression and 9 indicating best compression. The default value is set to 6.

See Also:

• ILcdGXYViewEncoder
• ILcdWMSFeatureInfoRequestEncoder

Constructor Summary

Constructors

Constructor	Description
TLcdGXYViewPNGEncoder()	Creates a new TLcdGXYViewPNGEncoder object.

Method Summary

Modifier and Type	Method	Description
void	encode(ILcdGXYLayerSubsetList aSubsetList, OutputStream aOutputStream, ILcdGXYView aGXYView)	Encodes the given selection in the TLcdGXYLayerSubsetList from a given ILcdGXYView and sends it to the given OutputStream.
void	encodeGXYView(ILcdGXYView aGXYView, OutputStream aOutputStream)	encodes a given ILcdGXYView to the OutputStream.
int	getCompressionLevel()	Returns the compression level.
String	getContentType()	Returns the content MIME type of the encoder.
void	setCompressionLevel(int aCompressionLevel)	Sets the compression level.

Methods inherited from class java.lang.Object

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

Constructor Details

TLcdGXYViewPNGEncoder

public TLcdGXYViewPNGEncoder()

Creates a new TLcdGXYViewPNGEncoder object.

Method Details

encodeGXYView

public void encodeGXYView(ILcdGXYView aGXYView,
 OutputStream aOutputStream)
                   throws IOException

Description copied from interface: ILcdGXYViewEncoder

encodes a given ILcdGXYView to the OutputStream.

Specified by:

encodeGXYView in interface ILcdGXYViewEncoder

Parameters:

aGXYView - the ILcdGXYView to be encoded.

aOutputStream - the OutputStream to write the encoded view to.

Throws:

IOException - for any I/O Exceptions.

getContentType

public String getContentType()

Description copied from interface: ILcdGXYViewEncoder

Returns the content MIME type of the encoder.

Specified by:

getContentType in interface ILcdGXYViewEncoder

Specified by:

getContentType in interface ILcdWMSFeatureInfoRequestEncoder

Returns:

the MIME-type as String.

setCompressionLevel

public void setCompressionLevel(int aCompressionLevel)

Sets the compression level. The possible values are [0 - 9], with 0 indicating no compression and 9 indicating best compression.

Parameters:

aCompressionLevel - A compression level.

See Also:

• getCompressionLevel()

getCompressionLevel

public int getCompressionLevel()

Returns the compression level. The possible values are [0 - 9], with 0 indicating no compression and 9 indicating best compression.

Returns:

the compression level.

See Also:

• setCompressionLevel(int)

encode

public void encode(ILcdGXYLayerSubsetList aSubsetList,
 OutputStream aOutputStream,
 ILcdGXYView aGXYView)
            throws jakarta.servlet.ServletException

Description copied from interface: ILcdWMSFeatureInfoRequestEncoder

Encodes the given selection in the TLcdGXYLayerSubsetList from a given ILcdGXYView and sends it to the given OutputStream.

Specified by:

encode in interface ILcdWMSFeatureInfoRequestEncoder

Parameters:

aSubsetList - a TLcdGXYLayerSubsetList containing the selection to be encoded.

aOutputStream - the OutputStream to write the output to.

aGXYView - the ILcdGXYView in which the elements are selected .

Throws:

jakarta.servlet.ServletException - for writing and sending exceptions.