y.layout
Class SelfLoopLayouter

java.lang.Object
  |
  +--y.layout.AbstractLayoutStage
        |
        +--y.layout.SelfLoopLayouter

All Implemented Interfaces:

Layouter, LayoutStage

public class SelfLoopLayouter

extends AbstractLayoutStage

A layout algorithm that routes the selfloops (reflexive edges) of a graph. By default this layouter routes selfloops in an orthogonal fashion. It places the selfloop in the least crowded quadrant around a node.

A core layout algorithm can be specifed for this class. In that case the performed layout process of this class is subdivided into four stages:

1. Remove all selfloops of the input graph
2. Invoke the core layouter on the now selfloops free graph
3. Reinsert all formerly removed selfloops of the graph
4. Layout the selfloops of the input graph

Field Summary

Fields inherited from interface y.layout.Layouter

EDGE_ID_DPKEY, NODE_ID_DPKEY, SELECTED_EDGES, SELECTED_NODES

Constructor Summary

SelfLoopLayouter()
Instantiates a new SelfLoopLayouter.

SelfLoopLayouter(Layouter coreLayouter)
Instantiates a new SelfLoopLayouter. the core layout routine will be delegated to the given layouter.

Method Summary

boolean	canLayout(LayoutGraph graph) Wheter or not this layouter can layout the given graph.
void	doLayout(LayoutGraph graph) Lays out the given graph.
protected void	layoutSelfLoops(LayoutGraph graph) Lays out the selfloops of the given graph.

Methods inherited from class y.layout.AbstractLayoutStage

canLayoutCore, doLayoutCore, getCoreLayouter, setCoreLayouter

Methods inherited from class java.lang.Object

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

Constructor Detail

SelfLoopLayouter

public SelfLoopLayouter()

Instantiates a new SelfLoopLayouter.

SelfLoopLayouter

public SelfLoopLayouter(Layouter coreLayouter)

Instantiates a new SelfLoopLayouter. the core layout routine will be delegated to the given layouter.

Method Detail

doLayout

public void doLayout(LayoutGraph graph)

Lays out the given graph.

canLayout

public boolean canLayout(LayoutGraph graph)

Wheter or not this layouter can layout the given graph. Returns true if the core layouter can handle the given graph after all of its selfloops (reflexive) edges have been hidden.

layoutSelfLoops

protected void layoutSelfLoops(LayoutGraph graph)

Lays out the selfloops of the given graph. This method will be called after the core layouter has layed out the graph and all selfloops have been reinserted in the graph again.