salvo.jesus.graph.visual.layout

Class OrthogonalLineLayout

java.lang.Object

salvo.jesus.graph.visual.layout.AbstractGridLayout

salvo.jesus.graph.visual.layout.OrthogonalLineLayout

All Implemented Interfaces:

Serializable, Runnable, GraphGridLayoutManager, GraphLayoutManager

Direct Known Subclasses:

StraightLineLayout

public class OrthogonalLineLayout
extends AbstractGridLayout

A concrete implementation of GraphLayoutManager, extending AbstractGraphLayout, used to layout the vertices of a graph with horizontal and vertices line edges.

Author:

Jesus M. Salvo Jr.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
OrthogonalLineLayout(GraphEditor gedit) Creates a OrthogonalLineLayout object used to layout the VisualGraph object specified by vgraph.
OrthogonalLineLayout(GraphScrollPane gpane) Creates a OrthogonalLineLayout object used to layout the VisualGraph object specified by vgraph.
OrthogonalLineLayout(VisualGraph vgraph) Creates a OrthogonalLineLayout object used to layout the VisualGraph object specified by vgraph.

Method Summary

Modifier and Type	Method and Description
void	addEdge(VisualEdge vedge) Automatically called by the VisualGraph's edgeAdded() method whenever an edge has been added to the graph and consequently when a VisualEdge has been added to the VisualGraph object.
void	addVertex(VisualVertex vvertex) Automatically called by the VisualGraph's vertexAdded() method whenever a vertex has been added to the graph and consequently when the VisualVertex has been added to the VisualGraph object.
protected void	initGraphLayout() Initializes the internal List objects
void	layout() Lays out the graph.
void	removeEdge(VisualEdge vedge) Automatically called by the VisualGraph's edgeRemoved() method whenever an edge is about to be removed from the graph and consequently when a VisualEdge is about to be removed from the VisualGraph object.
void	removeVertex(VisualVertex vvertex) Automatically called by the VisualGraph's vertexRemoved() method whenever a vertex is about to be removed from the graph and consequently when a VisualVertex is about to be removed from the VisualGraph object.
void	routeEdge(Graphics2D g2d, VisualEdge vedge) Automatically called when a VisualEdge object needs to be drawn.
protected void	routeEdge(VisualEdge vedge)
protected void	routeEdges() Routes all the edges

Methods inherited from class salvo.jesus.graph.visual.layout.AbstractGridLayout

drawLayout, generalPosition, getDrawgrid, getGrid, getStartAt, getXGridDistance, getYGridDistance, isInitialized, medianPlacement, run, setDrawGrid, setGraphLayoutListener, setStartAt, setXGridDistance, setYGridDistance

Methods inherited from class java.lang.Object

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

Constructor Detail

OrthogonalLineLayout

public OrthogonalLineLayout(VisualGraph vgraph)

Creates a OrthogonalLineLayout object used to layout the VisualGraph object specified by vgraph. Because no translation parameters are specified, position 0,0 of the internal Grid object will be drawn on 0,0 of the Container; and the distance between grid lines is 100.

Parameters:

vgraph - The VisualGraph object to be laid out.

OrthogonalLineLayout

public OrthogonalLineLayout(GraphScrollPane gpane)

Creates a OrthogonalLineLayout object used to layout the VisualGraph object specified by vgraph. Because no translation parameters are specified, position 0,0 of the internal Grid object will be drawn on 0,0 of the Container; and the distance between grid lines is 100.

Parameters:

gpane - A GraphScrollPane object encapsulating the VisualGraph object to be laid out.

OrthogonalLineLayout

public OrthogonalLineLayout(GraphEditor gedit)

Creates a OrthogonalLineLayout object used to layout the VisualGraph object specified by vgraph. Because no translation parameters are specified, position 0,0 of the internal Grid object will be drawn on 0,0 of the Container; and the distance between grid lines is 100.

Parameters:

gedit - A GraphEditor object encapsulating a GraphScrollPane object which in turn encapsulates the VisualGraph object to be laid out.

Method Detail

initGraphLayout

protected void initGraphLayout()

Initializes the internal List objects

addVertex

public void addVertex(VisualVertex vvertex)

Automatically called by the VisualGraph's vertexAdded() method whenever a vertex has been added to the graph and consequently when the VisualVertex has been added to the VisualGraph object.

Parameters:

vvertex - The newly added VisualVertex object.

removeVertex

public void removeVertex(VisualVertex vvertex)

Automatically called by the VisualGraph's vertexRemoved() method whenever a vertex is about to be removed from the graph and consequently when a VisualVertex is about to be removed from the VisualGraph object.

Parameters:

vvertex - The VisualVertex object about to be removed.

addEdge

public void addEdge(VisualEdge vedge)

Automatically called by the VisualGraph's edgeAdded() method whenever an edge has been added to the graph and consequently when a VisualEdge has been added to the VisualGraph object. This method currently does not do anything as VisualEdges are not assigned their port assignments until during layout.

Parameters:

vedge - The newly added VisualEdge object

removeEdge

public void removeEdge(VisualEdge vedge)

Automatically called by the VisualGraph's edgeRemoved() method whenever an edge is about to be removed from the graph and consequently when a VisualEdge is about to be removed from the VisualGraph object. This method will remove all top, left, right, and bottom side assignments of a VisualEdge from all vertices.

Parameters:

vedge - The VisualEdge object about to be removed.

routeEdge

public void routeEdge(Graphics2D g2d,
                      VisualEdge vedge)

Description copied from interface: GraphLayoutManager

Automatically called when a VisualEdge object needs to be drawn. This method is typically called from VisualEdgePainterImpl when the VisualGraph encapsulating the VisualEdge has a GraphLayoutManager set. Prior to calling this method, the GeneralPath of the VisualEdge is reset.

Implementations of this method should set the segments of the VisualEdge's GeneralPath by calling the methods moveTo(), lineTo(), curveTo(), and quadTo().

Parameters:

g2d - The Graphics2D object used for painting

routeEdges

protected void routeEdges()

Routes all the edges

routeEdge

protected void routeEdge(VisualEdge vedge)

layout

public void layout()

Lays out the graph. The layout is performed in the following steps: generalPosition() and the medianPlacement().

Specified by:

layout in interface GraphLayoutManager

Overrides:

layout in class AbstractGridLayout

See Also:

AbstractGridLayout.drawLayout()