org.geotools.gui.swing.map.map2d.stream.strategy
Class AbstractRenderingStrategy

Object
  AbstractRenderingStrategy

All Implemented Interfaces:

EventListener, StreamingStrategy, MapLayerListListener

Direct Known Subclasses:

MergeBufferedImageStrategy, SingleBufferedImageStrategy, SingleVolatileImageStrategy

public abstract class AbstractRenderingStrategy
extends Object
implements StreamingStrategy, MapLayerListListener

Abstract rendering strategy

Author:

Johann Sorel

Field Summary

protected AffineTransform	affineTransform
protected MapContext	context
protected Envelope	mapArea

Constructor Summary

AbstractRenderingStrategy()
create a default AbstractStrategy

Method Summary

void	addStrategyListener(StrategyListener listener) add a StrategyListener
protected boolean	checkAspect()
abstract BufferedImage	createBufferImage(MapContext context)
abstract BufferedImage	createBufferImage(MapLayer layer)
void	dispose() must be call to remove all reference on the renderingstrategy.
protected void	fireMapAreaChanged(Envelope oldone, Envelope newone)
protected void	fireMapContextChanged(MapContext oldcontext, MapContext newContext)
protected void	fit()
protected Envelope	fixAspectRatio(Rectangle rect, Envelope area)
AffineTransform	getAffineTransform() get the actual affinetransfrom
JComponent	getComponent() get the visual component
MapContext	getContext() get the MapContext
Envelope	getMapArea() get the maparea to look at
abstract BufferedImage	getSnapShot() create a bufferedImage of what is actually visible on the map widget
StrategyListener[]	getStrategyListeners() get an array of StrategyListener
protected abstract JComponent	init()
boolean	isAutoRefresh() to see if the strategy is in auto refresh mode
boolean	isPainting() true if the strategy is currently painting
protected boolean	isValidEnvelope(Envelope env)
abstract void	layerAdded(MapLayerListEvent event) Triggered when a new layer is added to the MapContext
abstract void	layerChanged(MapLayerListEvent event) Triggered when something in a layer changed (data, style, title)
abstract void	layerMoved(MapLayerListEvent event) Triggered when a group of layers chenges position in the layer list
abstract void	layerRemoved(MapLayerListEvent event) Triggered when a layer is removed from the MapContext
abstract void	refresh() use for a complete reset of the strategy
void	removeStrategyListener(StrategyListener listener) remove a StrategyListener
void	setAffineTransform(AffineTransform affineTransform) set affinetransform
void	setAutoRefreshEnabled(boolean ref) to enable automatic refreshing of the map, if not you must call manualy the refresh method
void	setContext(MapContext newContext) set the MapContext
void	setMapArea(Envelope area) set the maparea to look at
protected void	setPainting(boolean b)
protected void	testRefresh()
Point	toComponentCoord(Coordinate coord) transform a JTS Coordinate in an pixel x/y coordinate
Coordinate	toMapCoord(int mx, int my) transform a mouse coordinate in JTS Coordinate using the CRS of the mapcontext

Methods inherited from class Object

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

Field Detail

context

protected MapContext context

mapArea

protected Envelope mapArea

affineTransform

protected AffineTransform affineTransform

Constructor Detail

AbstractRenderingStrategy

public AbstractRenderingStrategy()

create a default AbstractStrategy

Method Detail

init

protected abstract JComponent init()

fixAspectRatio

protected Envelope fixAspectRatio(Rectangle rect,
                                  Envelope area)

fit

protected void fit()

testRefresh

protected void testRefresh()

checkAspect

protected boolean checkAspect()

isValidEnvelope

protected boolean isValidEnvelope(Envelope env)

setPainting

protected void setPainting(boolean b)

fireMapAreaChanged

protected void fireMapAreaChanged(Envelope oldone,
                                  Envelope newone)

fireMapContextChanged

protected void fireMapContextChanged(MapContext oldcontext,
                                     MapContext newContext)

toMapCoord

public Coordinate toMapCoord(int mx,
                             int my)

Description copied from interface: StreamingStrategy

transform a mouse coordinate in JTS Coordinate using the CRS of the mapcontext

Specified by:

toMapCoord in interface StreamingStrategy

Parameters:

mx - : x coordinate of the mouse on the map (in pixel)

my - : y coordinate of the mouse on the map (in pixel)

Returns:

JTS Coordinate

toComponentCoord

public Point toComponentCoord(Coordinate coord)

Description copied from interface: StreamingStrategy

transform a JTS Coordinate in an pixel x/y coordinate

Specified by:

toComponentCoord in interface StreamingStrategy

Returns:

Java2D Point

createBufferImage

public abstract BufferedImage createBufferImage(MapLayer layer)

createBufferImage

public abstract BufferedImage createBufferImage(MapContext context)

getSnapShot

public abstract BufferedImage getSnapShot()

Description copied from interface: StreamingStrategy

create a bufferedImage of what is actually visible on the map widget

Specified by:

getSnapShot in interface StreamingStrategy

Returns:

BufferedImage

refresh

public abstract void refresh()

Description copied from interface: StreamingStrategy

use for a complete reset of the strategy

Specified by:

refresh in interface StreamingStrategy

getComponent

public final JComponent getComponent()

Description copied from interface: StreamingStrategy

get the visual component

Specified by:

getComponent in interface StreamingStrategy

Returns:

Component

setContext

public final void setContext(MapContext newContext)

Description copied from interface: StreamingStrategy

set the MapContext

Specified by:

setContext in interface StreamingStrategy

Parameters:

newContext - : can not be null

getContext

public final MapContext getContext()

Description copied from interface: StreamingStrategy

get the MapContext

Specified by:

getContext in interface StreamingStrategy

Returns:

MapContext or null if no mapContext

setMapArea

public final void setMapArea(Envelope area)

Description copied from interface: StreamingStrategy

set the maparea to look at

Specified by:

setMapArea in interface StreamingStrategy

Parameters:

area - : can not be null

getMapArea

public final Envelope getMapArea()

Description copied from interface: StreamingStrategy

get the maparea to look at

Specified by:

getMapArea in interface StreamingStrategy

Returns:

Envelope or null if no MapArea

addStrategyListener

public final void addStrategyListener(StrategyListener listener)

Description copied from interface: StreamingStrategy

add a StrategyListener

Specified by:

addStrategyListener in interface StreamingStrategy

Parameters:

listener - : StrategyListener to add

removeStrategyListener

public final void removeStrategyListener(StrategyListener listener)

Description copied from interface: StreamingStrategy

remove a StrategyListener

Specified by:

removeStrategyListener in interface StreamingStrategy

Parameters:

listener - : StrategyListener to remove

getStrategyListeners

public final StrategyListener[] getStrategyListeners()

Description copied from interface: StreamingStrategy

get an array of StrategyListener

Specified by:

getStrategyListeners in interface StreamingStrategy

Returns:

array of StrategyListener

setAutoRefreshEnabled

public final void setAutoRefreshEnabled(boolean ref)

Description copied from interface: StreamingStrategy

to enable automatic refreshing of the map, if not you must call manualy the refresh method

Specified by:

setAutoRefreshEnabled in interface StreamingStrategy

isAutoRefresh

public final boolean isAutoRefresh()

Description copied from interface: StreamingStrategy

to see if the strategy is in auto refresh mode

Specified by:

isAutoRefresh in interface StreamingStrategy

Returns:

boolean

isPainting

public final boolean isPainting()

Description copied from interface: StreamingStrategy

true if the strategy is currently painting

Specified by:

isPainting in interface StreamingStrategy

Returns:

boolean

dispose

public void dispose()

Description copied from interface: StreamingStrategy

must be call to remove all reference on the renderingstrategy. to avoid memory leack.

Specified by:

dispose in interface StreamingStrategy

layerAdded

public abstract void layerAdded(MapLayerListEvent event)

Description copied from interface: MapLayerListListener

Triggered when a new layer is added to the MapContext

Specified by:

layerAdded in interface MapLayerListListener

Parameters:

event - encapsulating the event information

layerRemoved

public abstract void layerRemoved(MapLayerListEvent event)

Description copied from interface: MapLayerListListener

Triggered when a layer is removed from the MapContext

Specified by:

layerRemoved in interface MapLayerListListener

Parameters:

event - encapsulating the event information

layerChanged

public abstract void layerChanged(MapLayerListEvent event)

Description copied from interface: MapLayerListListener

Triggered when something in a layer changed (data, style, title)

Specified by:

layerChanged in interface MapLayerListListener

Parameters:

event - encapsulating the event information

layerMoved

public abstract void layerMoved(MapLayerListEvent event)

Description copied from interface: MapLayerListListener

Triggered when a group of layers chenges position in the layer list

Specified by:

layerMoved in interface MapLayerListListener

Parameters:

event - encapsulating the event information

getAffineTransform

public AffineTransform getAffineTransform()

Description copied from interface: StreamingStrategy

get the actual affinetransfrom

Specified by:

getAffineTransform in interface StreamingStrategy

Returns:

AffineTransform

setAffineTransform

public void setAffineTransform(AffineTransform affineTransform)

Description copied from interface: StreamingStrategy

set affinetransform

Specified by:

setAffineTransform in interface StreamingStrategy