Class PolyLineLink<T>

java.lang.Object

com.dlsc.gemsfx.treeview.link.AbstractLinkStrategy<T>

com.dlsc.gemsfx.treeview.link.PolyLineLink<T>

Type Parameters:

T - the type of the data value stored in each tree node

All Implemented Interfaces:

LinkStrategy<T>

public class PolyLineLink<T>
extends AbstractLinkStrategy<T>

A LinkStrategy that draws a right-angle polyline connector between a parent and a child node.

The link consists of three line segments forming an elbow shape: one segment travels halfway along the gap axis, a second crosses the perpendicular axis to align with the child, and a third completes the connection. The bend point is placed at the midpoint of the gap between parent and child. A directional arrow is added at the child end.

Field Summary

Fields inherited from class AbstractLinkStrategy

endX, endY, startX, startY

Constructor Summary

Constructors

Constructor	Description
PolyLineLink()

Method Summary

Modifier and Type	Method	Description
protected ArrayList<javafx.scene.Node>	drawLink(TreeNodeView.LayoutDirection direction, double maxDimensionInLine, double startX, double startY, double endX, double endY, double vgap, double hgap)	Draws the link for the given start and end coordinates.

Methods inherited from class AbstractLinkStrategy

calculateAngle, calculateAngle, calculateAngle, calculateAngle, calculateEndPoints, createSimpleArrow, drawNodeLink, getTangentAngle, getTangentAngle, getTangentAngle

Methods inherited from class Object

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

Constructor Details

PolyLineLink

public PolyLineLink()

Method Details

drawLink

protected ArrayList<javafx.scene.Node> drawLink(TreeNodeView.LayoutDirection direction,
 double maxDimensionInLine,
 double startX,
 double startY,
 double endX,
 double endY,
 double vgap,
 double hgap)

Draws the link for the given start and end coordinates.

Specified by:

drawLink in class AbstractLinkStrategy<T>

Parameters:

direction - the layout direction

maxDimensionInLine - the maximum node dimension in the active line

startX - the x-coordinate of the link start

startY - the y-coordinate of the link start

endX - the x-coordinate of the link end

endY - the y-coordinate of the link end

vgap - the vertical gap between levels

hgap - the horizontal gap between levels

Returns:

the nodes used to render the link