y.layout.hierarchic
Class MedianDrawerWrapper

java.lang.Object
  |
  +--y.layout.hierarchic.MedianDrawerWrapper

All Implemented Interfaces:

Drawer

public class MedianDrawerWrapper

extends Object

implements Drawer

This class can be used to improve the results of different drawers. It is designed as a wrapper to another drawer (especially SimplexDrawer). It will insert additional dummy nodes for each node that has an even number of incoming edges or outgoing edges. Dummy nodes will be inserted in the neighbor layer at the center of the other edges' opposite nodes.

Field Summary

protected Drawer	delegate the delegate
protected NodeMap	dummy the dummyMap

Fields inherited from interface y.layout.hierarchic.Drawer

NODE_BORDER_BOTTOM, NODE_BORDER_LEFT, NODE_BORDER_RIGHT, NODE_BORDER_TOP, NODE_DISTANCE

Constructor Summary

MedianDrawerWrapper(Drawer delegate)
Creates a new instance of MedianDrawerWrapper using the delegate to perform the core work.

Method Summary

void	assignCoordinates(LayoutGraph g, NodeList[] layerLists, DataProvider layerID) This method assigns the coordinates to the nodes.
Drawer	getDelegate() Gets the drawer to which the actual drawing will be delegated.
protected void	postprocess(LayoutGraph g, NodeList[] layerLists, NodeMap layerID) Called as a hook after the actual drawing is performed by the delegate
protected void	preprocess(LayoutGraph g, NodeList[] layerLists, NodeMap layerID) Called as a hook before the actual drawing is performed by the delegate
void	setDelegate(Drawer delegate) Sets the drawer to which the actual drawing will be delegated.
void	setDummyMap(NodeMap dummy) Gives the drawer the opportunity to distinguish between dummy nodes and real ones. dummy stores the original edge for each dummy node or null for real nodes.
void	setMinimalEdgeDistance(double d) Sets the minimal distance between two edges in the same layer.
void	setMinimalLayerDistance(double d) Sets the minimal distance between two layers.
void	setMinimalMultiEdgeDistance(double d) Sets the minimal distance between two edges sharing source/target (aka multiedges) in the same layer.
void	setMinimalNodeDistance(double d) Sets the minimal distance between two nodes in the same layer.

Methods inherited from class java.lang.Object

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

Field Detail

delegate

protected Drawer delegate

the delegate

dummy

protected NodeMap dummy

the dummyMap

Constructor Detail

MedianDrawerWrapper

public MedianDrawerWrapper(Drawer delegate)

Creates a new instance of MedianDrawerWrapper using the delegate to perform the core work.

Method Detail

assignCoordinates

public void assignCoordinates(LayoutGraph g,
                              NodeList[] layerLists,
                              DataProvider layerID)

Description copied from interface: Drawer

This method assigns the coordinates to the nodes.

Specified by:

assignCoordinates in interface Drawer

setDummyMap

public void setDummyMap(NodeMap dummy)

Description copied from interface: Drawer

Gives the drawer the opportunity to distinguish between dummy nodes and real ones. dummy stores the original edge for each dummy node or null for real nodes.

Specified by:

setDummyMap in interface Drawer

setMinimalEdgeDistance

public void setMinimalEdgeDistance(double d)

Description copied from interface: Drawer

Sets the minimal distance between two edges in the same layer.

Specified by:

setMinimalEdgeDistance in interface Drawer

setMinimalLayerDistance

public void setMinimalLayerDistance(double d)

Description copied from interface: Drawer

Sets the minimal distance between two layers.

Specified by:

setMinimalLayerDistance in interface Drawer

setMinimalMultiEdgeDistance

public void setMinimalMultiEdgeDistance(double d)

Description copied from interface: Drawer

Sets the minimal distance between two edges sharing source/target (aka multiedges) in the same layer.

Specified by:

setMinimalMultiEdgeDistance in interface Drawer

setMinimalNodeDistance

public void setMinimalNodeDistance(double d)

Description copied from interface: Drawer

Sets the minimal distance between two nodes in the same layer.

Specified by:

setMinimalNodeDistance in interface Drawer

preprocess

protected void preprocess(LayoutGraph g,
                          NodeList[] layerLists,
                          NodeMap layerID)

Called as a hook before the actual drawing is performed by the delegate

postprocess

protected void postprocess(LayoutGraph g,
                           NodeList[] layerLists,
                           NodeMap layerID)

Called as a hook after the actual drawing is performed by the delegate

getDelegate

public Drawer getDelegate()

Gets the drawer to which the actual drawing will be delegated.

setDelegate

public void setDelegate(Drawer delegate)

Sets the drawer to which the actual drawing will be delegated.