com.luciad.wms.server.viewencoder

OGC ServerClass TLcdGXYViewGIFEncoder

java.lang.Object

com.luciad.wms.server.viewencoder.TLcdGXYViewGIFEncoder

All Implemented Interfaces:

ILcdGXYViewEncoder, ILcdWMSFeatureInfoRequestEncoder

@LcdService(service=ILcdGXYViewEncoder.class,
            priority=20000)
public class TLcdGXYViewGIFEncoder
extends Object
implements ILcdGXYViewEncoder, 
ILcdWMSFeatureInfoRequestEncoder

This class implements ILcdGXYViewEncoder and ILcdWMSFeatureInfoRequestEncoder. This encoder encodes an ILcdGXYView to a GIF image.

The maximum number of colors for GIF images is 256. When there are more colors in the image to be encoded, the number of colors is automatically reduced before the GIF is generated.

The encoding process and color reduction step is done with the ImageIO library.

See Also:

ILcdGXYViewEncoder, ILcdWMSFeatureInfoRequestEncoder

Constructor Summary

Constructors

Constructor and Description
TLcdGXYViewGIFEncoder()

Method Summary

Modifier and Type	Method and Description
void	encode(ILcdGXYLayerSubsetList aSelectionSublist, OutputStream aOutputStream, ILcdGXYView aGXYView) Encodes the ILcdGXYView to a GIF and writes in to the given OutputStrean.
void	encodeGXYView(ILcdGXYView aGXYView, OutputStream aOutputStream) Encodes the given ILcdGXYView as a GIF and sends it to the outputStream.
String	getContentType() Returns the content MIME type of the encoder.
static void	setClassTraceOn(boolean aClassTraceOn) Deprecated. This method has been deprecated. It is recommended to use the standard Java logging framework directly.

Methods inherited from class java.lang.Object

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

Constructor Detail

TLcdGXYViewGIFEncoder

public TLcdGXYViewGIFEncoder()

Method Detail

setClassTraceOn

public static void setClassTraceOn(boolean aClassTraceOn)

Deprecated. This method has been deprecated. It is recommended to use the standard Java logging framework directly.

Enables tracing for all instances of this class. If the argument is true then all log messages are recorded, otherwise only the informative, warning and error messages are recorded.

Parameters:

aClassTraceOn - if true then all log messages are recorded, otherwise only the informative, warning and error messages are recorded.

encodeGXYView

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

Encodes the given ILcdGXYView as a GIF and sends it to the outputStream.

Specified by:

encodeGXYView in interface ILcdGXYViewEncoder

Parameters:

aGXYView - the view to decide.

aOutputStream - the outputstream to send the result to.

Throws:

IOException - for I/O errors.

See Also:

ILcdGXYViewEncoder

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.

encode

public void encode(ILcdGXYLayerSubsetList aSelectionSublist,
                   OutputStream aOutputStream,
                   ILcdGXYView aGXYView)
            throws javax.servlet.ServletException

Encodes the ILcdGXYView to a GIF and writes in to the given OutputStrean. The elements of the given TLcdGXYLayerSubsetList are painted in the ILcdGXYView in the selection color.

Specified by:

encode in interface ILcdWMSFeatureInfoRequestEncoder

Parameters:

aSelectionSublist - 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:

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

See Also:

ILcdWMSFeatureInfoRequestEncoder.