Package com.luciad.view.gxy.labeling

package com.luciad.view.gxy.labeling

Handles GXY view label placers and GXY labeling algorithms.

ILcdGXYViewLabelPlacer

The main interface of this package is ILcdGXYViewLabelPlacer. This interface takes a gxy view or a list of layers from a gxy view as input, and places their labels. Label placements are stored using the layers ALcdLabelLocations. The painting of these labels can then be done later by the layer.

This package provides three ILcdGXYViewLabelPlacer implementations :

• TLcdGXYLabelPlacer : This label placer uses a gxy labeling algorithm to compute label placements synchronously (on the AWT thread).
• TLcdGXYAsynchronousLabelPlacer : This label placer uses a gxy labeling algorithm to compute label placements asynchronously, i.e. it uses the paint threads to collect labeling info, and it uses a background thread to compute the label placements.
• TLcdGXYCompositeViewLabelPlacer : This label placer can be used to place labels of groups of layers independently, or to mix synchronous and asynchronous label placing.

Labeling algorithms

This package contains three sub-packages, each handling a different aspect of GXY labeling algorithms.

• com.luciad.view.gxy.labeling.algorithm
• com.luciad.view.gxy.labeling.util

Since:

10.1

Related Packages

Package	Description
com.luciad.view.gxy	Provides two-dimensional views and components supporting the visualization of the former's representation.
com.luciad.view.gxy.labeling.algorithm	Handles GXY labeling algorithms.
com.luciad.view.gxy.labeling.util	This package contains utility classes that can be used to implement ILcdGXYLabelingAlgorithms.
com.luciad.view.gxy.asynchronous	Provides layer-specific asynchronous painting.
com.luciad.view.gxy.controller	Controllers for 2D views.
com.luciad.view.gxy.measure	This package contains classes for working with measurement values in a GXY context.
com.luciad.view.gxy.painter	Painter and editor classes for rendering and visually editing objects in an ILcdGXYView.
com.luciad.view.gxy.swing	This package provides specializations of TLcdLayerTree and related classes for GXY views and GXY layers.

Class	Description
ILcdGXYViewLabelPlacer	This interface defines methods for placing labels in an ILcdGXYView.
ILcdGXYViewLabelPlacer.ViewLabelPlacerCallback	A callback interface used by ILcdGXYViewLabelPlacer.
TLcdGXYAsynchronousLabelPlacer	This view label placer can be used to perform asynchronous labeling.
TLcdGXYCompositeViewLabelPlacer	This composite view label placer creates a number of delegate view label placers based on a group ID.
TLcdGXYLabelPlacer	This ILcdGXYViewLabelPlacer places the labels using a given algorithm.