y.layout.tree
Class FreePlacer

java.lang.Object
  y.layout.tree.AbstractRotatableNodePlacer
      y.layout.tree.FreePlacer

All Implemented Interfaces:

FromSketchNodePlacer, NodePlacer

public class FreePlacer
extends AbstractRotatableNodePlacer

A FreePlacer is a simple pseudo-placer. The children of local root nodes are not moved. The NodePlacer just merges their rotated shapes and routes the edges.

This NodePlacer may be useful if a local root node does not have any children or you want to place them manually.

Nested Class Summary

Nested classes/interfaces inherited from class y.layout.tree.AbstractRotatableNodePlacer

AbstractRotatableNodePlacer.Matrix, AbstractRotatableNodePlacer.RootAlignment

Field Summary

Fields inherited from class y.layout.tree.AbstractRotatableNodePlacer

createdChildren, graph, modificationMatrix, nodeShapeProvider, spacing, subtreeShapeProvider

Fields inherited from interface y.layout.tree.NodePlacer

DIRECTION_ANY, DIRECTION_EAST, DIRECTION_NONE, DIRECTION_NORTH, DIRECTION_SOUTH, DIRECTION_WEST

Constructor Summary

FreePlacer()
Creates a new instance of FreePlacer with default settings.

Method Summary

Processor	createProcessor(GenericTreeLayouter layouter, LayoutGraph graph, Node currentRoot) Creates a Processor that will change all descending NodePlacers to FreePlacer.
protected byte	determineChildConnector(Node child) Determines a connector direction for the given child node.
protected y.layout.tree.SubtreeShapeRotated	placeSubtree(Node localRoot, byte parentConnectorDirection) Merges the rotated shapes of the given local root and its children and routes the edges between them.

Methods inherited from class y.layout.tree.AbstractRotatableNodePlacer

createComparator, createFromSketchComparator, createRootNodeShape, createSubtreeShape, determineChildConnectors, getModificationMatrix, getPortConstraint, getSourcePointAbs, getSpacing, placeSubtree, setSpacing, translateDirectionToModel, translateDirectionToReal, translatePoint

Methods inherited from class java.lang.Object

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

Constructor Detail

FreePlacer

public FreePlacer()

Creates a new instance of FreePlacer with default settings.

Method Detail

determineChildConnector

protected byte determineChildConnector(Node child)

Determines a connector direction for the given child node.

This implementation returns NodePlacer.DIRECTION_NONE for every node.

Specified by:

determineChildConnector in class AbstractRotatableNodePlacer

Parameters:

child - the child node

Returns:

NodePlacer.DIRECTION_NONE

placeSubtree

protected y.layout.tree.SubtreeShapeRotated placeSubtree(Node localRoot,
                                                         byte parentConnectorDirection)

Merges the rotated shapes of the given local root and its children and routes the edges between them.

Specified by:

placeSubtree in class AbstractRotatableNodePlacer

Parameters:

localRoot - the local root node

parentConnectorDirection - the direction specifier for the connector of the local root node to its parent node

Returns:

the merged subtree shape that contains the local root node and all its children

createProcessor

public Processor createProcessor(GenericTreeLayouter layouter,
                                 LayoutGraph graph,
                                 Node currentRoot)

Creates a Processor that will change all descending NodePlacers to FreePlacer.

Specified by:

createProcessor in interface NodePlacer

Overrides:

createProcessor in class AbstractRotatableNodePlacer

Parameters:

layouter - the current GenericTreeLayouter instance

graph - the input graph

currentRoot - the current root node handled by this NodePlacer

Returns:

the Processor suitable for FreePlacer