org.deegree.graphics.displayelements
Interface DisplayElement

All Known Implementing Classes:

AbstractDisplayElement, GeometryDisplayElement, LabelDisplayElement, LineStringDisplayElement, LocalizedDisplayElement, PointDisplayElement, PolygonDisplayElement, RasterDisplayElement

public interface DisplayElement

Basic interface for all display elements. A DisplayElement is associated to one Feature instance that may have a geometry property or not (which is the common case).

Version:

$Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Thu, 18 Jun 2009) $

Author:

Andreas Poth, Markus Schneider, last edited by: $Author: mschneider $

Method Summary

boolean	doesScaleConstraintApply(double scale) Returns whether the DisplayElement should be painted at the given scale.
String	getAssociateFeatureId() Returns the id of the associated feature.
Feature	getFeature() Returns the associated Feature.
boolean	isHighlighted() Returns whether the DisplayElement is highlighted.
boolean	isSelected() Returns whether the DisplayElement is selected.
void	paint(Graphics g, GeoTransform projection, double scale) Renders the DisplayElement to the submitted graphic context.
void	setFeature(Feature feature) Sets the associated Feature.
void	setHighlighted(boolean highlighted) Sets the highlighting state of the DisplayElement.
void	setSelected(boolean selected) Sets the selection state of the DisplayElement.

Method Detail

getFeature

Feature getFeature()

Returns the associated Feature.

Returns:

the associated feature

setFeature

void setFeature(Feature feature)

Sets the associated Feature.

Parameters:

feature -

getAssociateFeatureId

String getAssociateFeatureId()

Returns the id of the associated feature.

Returns:

the associated feature's id

paint

void paint(Graphics g,
           GeoTransform projection,
           double scale)

Renders the DisplayElement to the submitted graphic context.

Parameters:

g - graphics context to render to

projection -

scale -

setSelected

void setSelected(boolean selected)

Sets the selection state of the DisplayElement.

Parameters:

selected - true, if the DisplayElement is selected, false otherwise

isSelected

boolean isSelected()

Returns whether the DisplayElement is selected.

Returns:

true, if the DisplayElement is selected, false otherwise

setHighlighted

void setHighlighted(boolean highlighted)

Sets the highlighting state of the DisplayElement.

Parameters:

highlighted - true, if the DisplayElement is highlighted, false otherwise

isHighlighted

boolean isHighlighted()

Returns whether the DisplayElement is highlighted.

Returns:

true, if the DisplayElement is highlighted, false otherwise

doesScaleConstraintApply

boolean doesScaleConstraintApply(double scale)

Returns whether the DisplayElement should be painted at the given scale.

Parameters:

scale - scale to check

Returns:

true, if the DisplayElement has to be painted, false otherwise