com.luciad.view.gxy.labeling.algorithm.discrete

LuciadLightspeedClass TLcdGXYLabelingPathProvider

java.lang.Object

com.luciad.view.gxy.labeling.algorithm.discrete.TLcdGXYLabelingPathProvider

All Implemented Interfaces:

ILcdGXYLabelingPathProvider

public class TLcdGXYLabelingPathProvider
extends Object
implements ILcdGXYLabelingPathProvider

This path provider can provide paths for most supported shapes. It creates at most one path for the given domain object, by appending all 'sub-paths' to the same path. When a path is found, it is used for every label passed to the getPathsSFCT method.

To get the most performance, the layer should return an ILcdGXYPathPainter for the given domain object. If this is not the case, this path provider uses a fallback method to retrieve the path.

Since:

2013.0

Constructor Summary

Constructors

Constructor and Description
TLcdGXYLabelingPathProvider()

Method Summary

Modifier and Type	Method and Description
boolean	getPathsSFCT(Object aDomainObject, List<TLcdLabelIdentifier> aLabels, ILcdGXYContext aGXYContext, List<ILcdAWTPath> aPathsSFCT) This methods adds ILcdAWTPaths to the given list.

Methods inherited from class java.lang.Object

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

Constructor Detail

TLcdGXYLabelingPathProvider

public TLcdGXYLabelingPathProvider()

Method Detail

getPathsSFCT

public boolean getPathsSFCT(Object aDomainObject,
                            List<TLcdLabelIdentifier> aLabels,
                            ILcdGXYContext aGXYContext,
                            List<ILcdAWTPath> aPathsSFCT)

Description copied from interface: ILcdGXYLabelingPathProvider

This methods adds ILcdAWTPaths to the given list. For each label at index i, a path should be added to aPathsSFCT at index i. The resulting list is used to place the given list of labels. The given domain object is the same object as found in each given label identifier. The layer set in the given ILcdGXYContext is the same layer as found in each given label identifier.

When two labels should be placed using the same path, the list of AWT paths should contain the same path twice, for each of those labels. It is possible to set the AWT path to null for a label. In that case, the label will not be placed using a path.

Specified by:

getPathsSFCT in interface ILcdGXYLabelingPathProvider

Parameters:

aDomainObject - the domain object for which AWT paths are created.

aLabels - a list of labels for which an ILcdAWTPath should be added to aPathsSFCT.

aGXYContext - a gxy context.

aPathsSFCT - the list in which the paths for every label should be stored. This list is initially empty.

Returns:

true if this path provider was able to return paths, or false otherwise.