org.ginsim.gui.graph.canvas

Class GraphCanvasRenderer

java.lang.Object

org.ginsim.gui.graph.canvas.GraphCanvasRenderer

All Implemented Interfaces:

GraphListener, CanvasEventManager, CanvasRenderer

public class GraphCanvasRenderer
extends Object
implements CanvasRenderer, GraphListener

Field Summary

Fields

Modifier and Type	Field and Description
EditActionManager	amanager
Graph	graph
Set	selectionCache Cache all selected items for faster access and memory: allows to detect items needing to be redrawn

Constructor Summary

Constructors

Constructor and Description
GraphCanvasRenderer(Graph<?,?> graph, SimpleCanvas canvas, GraphSelection selection, EditActionManager amanager)

Method Summary

Modifier and Type	Method and Description
void	cancel()
void	click(Point p, boolean alternate)
void	damage(Rectangle bounds)
void	damageItem(Object item) Mark an item as needing redraw.
void	dragged(Point p)
Dimension	getBounds() Get the (virtual) size of the area needed to paint all objects in this renderer.
Rectangle	getDamageBounds(Object item)
Object	getObjectUnderPoint(Point p) Find the object under the provided point.
GraphEventCascade	graphChanged(GraphModel g, GraphChangeType type, Object data)
void	helpOverlay(Graphics2D g, Rectangle area)
void	overlay(Graphics2D g, Rectangle area) Draw temporary information on top of the canvas.
void	pressed(Point p, boolean alternate)
void	released(Point p)
void	render(Graphics2D g, Rectangle area) Draw on the canvas.
void	repaintCanvas()
void	select(Shape s) Select all objects inside the provided shape (usually a simple selection rectangle).
void	updateSelectionCache()

Methods inherited from class java.lang.Object

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

Field Detail

graph

public final Graph graph

amanager

public final EditActionManager amanager

selectionCache

public Set selectionCache

Cache all selected items for faster access and memory: allows to detect items needing to be redrawn

Constructor Detail

GraphCanvasRenderer

public GraphCanvasRenderer(Graph<?,?> graph,
                           SimpleCanvas canvas,
                           GraphSelection selection,
                           EditActionManager amanager)

Method Detail

render

public void render(Graphics2D g,
                   Rectangle area)

Description copied from interface: CanvasRenderer

Draw on the canvas. The provided area can be the full visible part of the canvas or a damaged region. Zooming, clipping... is performed by the canvas before calling this method.

Specified by:

render in interface CanvasRenderer

Parameters:

g - the clipped graphics object

area - the area to redraw

overlay

public void overlay(Graphics2D g,
                    Rectangle area)

Description copied from interface: CanvasRenderer

Draw temporary information on top of the canvas. It can be used to represent moving objects or other temporary information.

Specified by:

overlay in interface CanvasEventManager

Specified by:

overlay in interface CanvasRenderer

Parameters:

g - the clipped graphics object

area - the area to redraw

helpOverlay

public void helpOverlay(Graphics2D g,
                        Rectangle area)

Specified by:

helpOverlay in interface CanvasEventManager

updateSelectionCache

public void updateSelectionCache()

damageItem

public void damageItem(Object item)

Mark an item as needing redraw. This will call damageCanvas according to the item's bounds. Note: It does NOT call repaint() to let several calls happen before the actual redraw.

Parameters:

item -

damage

public void damage(Rectangle bounds)

getDamageBounds

public Rectangle getDamageBounds(Object item)

select

public void select(Shape s)

Description copied from interface: CanvasRenderer

Select all objects inside the provided shape (usually a simple selection rectangle).

Specified by:

select in interface CanvasRenderer

getObjectUnderPoint

public Object getObjectUnderPoint(Point p)

Description copied from interface: CanvasRenderer

Find the object under the provided point.

Specified by:

getObjectUnderPoint in interface CanvasRenderer

Returns:

a found object at this position, or null if none.

graphChanged

public GraphEventCascade graphChanged(GraphModel g,
                                      GraphChangeType type,
                                      Object data)

Specified by:

graphChanged in interface GraphListener

repaintCanvas

public void repaintCanvas()

click

public void click(Point p,
                  boolean alternate)

Specified by:

click in interface CanvasEventManager

pressed

public void pressed(Point p,
                    boolean alternate)

Specified by:

pressed in interface CanvasEventManager

released

public void released(Point p)

Specified by:

released in interface CanvasEventManager

dragged

public void dragged(Point p)

Specified by:

dragged in interface CanvasEventManager

cancel

public void cancel()

Specified by:

cancel in interface CanvasEventManager

getBounds

public Dimension getBounds()

Description copied from interface: CanvasRenderer

Get the (virtual) size of the area needed to paint all objects in this renderer.

Specified by:

getBounds in interface CanvasRenderer

Returns:

the (virtual) size of the rendered canvas.