y.layout.hierarchic
Class TreeDrawer.HierarchicTreePlacer

java.lang.Object
  y.layout.tree.AbstractNodePlacer
      y.layout.hierarchic.TreeDrawer.HierarchicTreePlacer

All Implemented Interfaces:

Cloneable, NodePlacer

Enclosing class:

TreeDrawer

public static class TreeDrawer.HierarchicTreePlacer
extends AbstractNodePlacer

places nodes in their given layers (does not change the y coordinates) for the TREE layout style of a HierarchicLayouter.

Field Summary

Fields inherited from class y.layout.tree.AbstractNodePlacer

graph

Fields inherited from interface y.layout.tree.NodePlacer

DIRECTION_ANY, DIRECTION_EAST, DIRECTION_NONE, DIRECTION_NORTH, DIRECTION_SOUTH, DIRECTION_WEST

Constructor Summary

TreeDrawer.HierarchicTreePlacer(double minimalNodeDistance)
creates a new HierarchicTreePlacer.

Method Summary

protected byte	determineChildConnector(Node child) This method must be implemented by subclasses.
protected GenericTreeLayouter.SubtreeShape	placeSubtree(Node localRoot, byte parentConnectorDirection) The main placeSubtree method that must be implemented by subclasses.

Methods inherited from class y.layout.tree.AbstractNodePlacer

clone, createProcessor, determineChildConnectors, getNodeShape, getSubtreeShape, placeSubtree

Methods inherited from class java.lang.Object

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

Constructor Detail

TreeDrawer.HierarchicTreePlacer

public TreeDrawer.HierarchicTreePlacer(double minimalNodeDistance)

creates a new HierarchicTreePlacer.

Parameters:

minimalNodeDistance - the minimal allowed distance between two nodes in the same layer

Method Detail

determineChildConnector

protected byte determineChildConnector(Node child)

Description copied from class: AbstractNodePlacer

This method must be implemented by subclasses. It assigns a connector shape direction to each child.

Specified by:

determineChildConnector in class AbstractNodePlacer

Parameters:

child - the child node

Returns:

a byte constant as defined in the NodePlacer interface

placeSubtree

protected GenericTreeLayouter.SubtreeShape placeSubtree(Node localRoot,
                                                        byte parentConnectorDirection)

Description copied from class: AbstractNodePlacer

The main placeSubtree method that must be implemented by subclasses.

Specified by:

placeSubtree in class AbstractNodePlacer

Parameters:

localRoot - the local root node

parentConnectorDirection - the direction of the connector shape

Returns:

a SubtreeShape instance that describes the shape of the whole subtree