Class SimpleRenderer

java.lang.Object

com.vividsolutions.jump.workbench.ui.renderer.SimpleRenderer

All Implemented Interfaces:

Renderer

Direct Known Subclasses:

GridRenderer, NorthArrowRenderer, ScaleBarRenderer, ShowScaleRenderer, ShowViewCenterRenderer, SimpleFeatureCollectionRenderer

public abstract class SimpleRenderer
extends Object
implements Renderer

Advantage over ImageCachingRenderer: no cached image (typically 1 MB each). Disadvantage: must redraw image each time (slower). Classic tradeoff between space and time.

Nested Class Summary

Nested classes/interfaces inherited from interface Renderer

Renderer.ContentDependendFactory, Renderer.Factory

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	cancelled
protected LayerViewPanel	panel

Constructor Summary

Constructors

Constructor	Description
SimpleRenderer(Object contentID, LayerViewPanel panel)

Method Summary

Modifier and Type	Method	Description
void	cancel()
void	clearImageCache()
void	copyTo(Graphics2D graphics)
Runnable	createRunnable()
Object	getContentID()
boolean	isRendering()
protected abstract void	paint(Graphics2D g)

Methods inherited from class Object

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

Field Details

cancelled

protected volatile boolean cancelled

panel

protected LayerViewPanel panel

Constructor Details

SimpleRenderer

public SimpleRenderer(Object contentID,
 LayerViewPanel panel)

Method Details

paint

protected abstract void paint(Graphics2D g)
                       throws Exception

Throws:

Exception

clearImageCache

public void clearImageCache()

Specified by:

clearImageCache in interface Renderer

isRendering

public boolean isRendering()

Specified by:

isRendering in interface Renderer

getContentID

public Object getContentID()

Specified by:

getContentID in interface Renderer

Returns:

contentID which identifies this Renderer by what it draws

copyTo

public void copyTo(Graphics2D graphics)

Specified by:

copyTo in interface Renderer

createRunnable

public Runnable createRunnable()

Specified by:

createRunnable in interface Renderer

Returns:

null if no rendering work needs to be done

cancel

public void cancel()

Specified by:

cancel in interface Renderer