org.deegree_impl.graphics.displayelements
Class LabelDisplayElement_Impl

java.lang.Object
  org.deegree_impl.graphics.displayelements.DisplayElement_Impl
      org.deegree_impl.graphics.displayelements.GeometryDisplayElement_Impl
          org.deegree_impl.graphics.displayelements.LabelDisplayElement_Impl

All Implemented Interfaces:

DisplayElement, GeometryDisplayElement, LabelDisplayElement, java.io.Serializable

public class LabelDisplayElement_Impl

extends GeometryDisplayElement_Impl

implements LabelDisplayElement, java.io.Serializable

DisplayElement that encapsulates a GM_Object (geometry), a ParameterValueType (caption) and a TextSymbolizer (style).

The graphical (say: screen) representations of this DisplayElement are Label-instances. These are generated either when the paint-method is called or assigned externally using the setLabels- or addLabels-methods.

Version:

$Revision: 1.21 $ $Date: 2004/02/09 07:59:41 $

Author:

Andreas Poth, Markus Schneider

See Also:

Serialized Form

Field Summary

protected Feature	feature
protected GM_Object	geometry
protected Symbolizer	highlightSymbolizer
private ParameterValueType	label
private java.util.ArrayList	labels
protected java.lang.Object	placement
protected Symbolizer	selectedSymbolizer
private static long	serialVersionUID Use serialVersionUID for interoperability.
protected Symbolizer	symbolizer

Constructor Summary

(package private)

LabelDisplayElement_Impl(Feature feature, GM_Object geometry, TextSymbolizer symbolizer) Creates a new LabelDisplayElement_Impl object.

Method Summary

void	addLabel(Label label) Adds a Label representation that is to be considered when the LabelDisplayElement is painted to the view.
void	addLabels(Label[] labels) Adds Label representations that are to be considered when the LabelDisplayElement is painted to the view.
void	clearLabels() Removes all Label representations for this LabelDisplayElement.
boolean	doesScaleConstraintApply(double scale) Returns whether the DisplayElement should be painted at the current scale or not.
java.lang.String	getAssociateFeatureId() returns the id of the feature that's associated with the DisplayElement
Feature	getFeature() Returns the associated Feature.
GM_Object	getGeometry() returns the geometry that determines the position the DisplayElement will be rendered to
Symbolizer	getHighlightSymbolizer() returns the symbolizer that determines how the geometry will be rendered if it's highlighted
ParameterValueType	getLabel() Returns the caption of the label as ParameterValueType.
Symbolizer	getSelectedSymbolizer() returns the symbolizer that determines how the geometry will be rendered if it's selected
Symbolizer	getSymbolizer() Returns the symbolizer that determines how the geometry will be rendered.
boolean	isHighlighted() returns if the DisplayElement is highlighted or not.
boolean	isSelected() returns if the DisplayElement is selected or not
void	paint(java.awt.Graphics g, GeoTransform projection) Renders the DisplayElement to the submitted graphic context.
void	setGeometry(GM_Object geometry) sets the geometry that determines the position the DisplayElement will be rendered to
void	setHighlighted(boolean highlighted) marks the DisplayElement as highlighted or not
void	setHighlightSymbolizer(Symbolizer rule) sets the rule that determines how the geometry will be rendered when it's highlighted
void	setLabel(ParameterValueType label) Sets the caption of the label.
void	setLabels(Label[] labels) Sets the Label representations that are to be considered when the LabelDisplayElement is painted to the view.
void	setPlacement(java.lang.Object o) Overwrites the default placement of the DisplayElement.
void	setSelected(boolean selected) marks a DisplayElement as selected or not
void	setSelectedSymbolizer(Symbolizer rule) sets the rule that determines how the geometry will be rendered when it's selected
void	setSymbolizer(Symbolizer symbolizer) sets the rules that determines how the geometry will be rendered

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.deegree.graphics.displayelements.GeometryDisplayElement

getGeometry, getHighlightSymbolizer, getSelectedSymbolizer, getSymbolizer, setGeometry, setHighlightSymbolizer, setPlacement, setSelectedSymbolizer, setSymbolizer

Methods inherited from interface org.deegree.graphics.displayelements.DisplayElement

getAssociateFeatureId, getFeature, isHighlighted, isSelected, setHighlighted, setSelected

Field Detail

serialVersionUID

private static final long serialVersionUID

Use serialVersionUID for interoperability.

See Also:

Constant Field Values

label

private ParameterValueType label

labels

private java.util.ArrayList labels

geometry

protected GM_Object geometry

symbolizer

protected Symbolizer symbolizer

highlightSymbolizer

protected Symbolizer highlightSymbolizer

selectedSymbolizer

protected Symbolizer selectedSymbolizer

placement

protected java.lang.Object placement

feature

protected Feature feature

Constructor Detail

LabelDisplayElement_Impl

LabelDisplayElement_Impl(Feature feature,
                         GM_Object geometry,
                         TextSymbolizer symbolizer)

Creates a new LabelDisplayElement_Impl object.

Parameters:

feature - associated Feature

geometry - associated GM_Object

symbolizer - associated TextSymbolizer

Method Detail

setLabel

public void setLabel(ParameterValueType label)

Sets the caption of the label.

Specified by:

setLabel in interface LabelDisplayElement

getLabel

public ParameterValueType getLabel()

Returns the caption of the label as ParameterValueType.

Specified by:

getLabel in interface LabelDisplayElement

paint

public void paint(java.awt.Graphics g,
                  GeoTransform projection)

Renders the DisplayElement to the submitted graphic context. If the Label-represenations have been assigned externally, these labels are used, else Label-instances are created automatically using the LabelFactory.

Specified by:

paint in interface DisplayElement

Specified by:

paint in class DisplayElement_Impl

Parameters:

g - Graphics context to be used

projection - GeoTransform to be used

doesScaleConstraintApply

public boolean doesScaleConstraintApply(double scale)

Returns whether the DisplayElement should be painted at the current scale or not.

Specified by:

doesScaleConstraintApply in interface DisplayElement

Overrides:

doesScaleConstraintApply in class GeometryDisplayElement_Impl

clearLabels

public void clearLabels()

Removes all Label representations for this LabelDisplayElement.

Specified by:

clearLabels in interface LabelDisplayElement

addLabel

public void addLabel(Label label)

Adds a Label representation that is to be considered when the LabelDisplayElement is painted to the view.

Specified by:

addLabel in interface LabelDisplayElement

addLabels

public void addLabels(Label[] labels)

Adds Label representations that are to be considered when the LabelDisplayElement is painted to the view.

Specified by:

addLabels in interface LabelDisplayElement

setLabels

public void setLabels(Label[] labels)

Sets the Label representations that are to be considered when the LabelDisplayElement is painted to the view.

Specified by:

setLabels in interface LabelDisplayElement

setPlacement

public void setPlacement(java.lang.Object o)

Overwrites the default placement of the DisplayElement. This method is used by the PlacementOptimizer to minimize the overlapping of labels, for example.

Specified by:

setPlacement in interface GeometryDisplayElement

Parameters:

o - the placement to be used

setGeometry

public void setGeometry(GM_Object geometry)

sets the geometry that determines the position the DisplayElement will be rendered to

Specified by:

setGeometry in interface GeometryDisplayElement

getGeometry

public GM_Object getGeometry()

returns the geometry that determines the position the DisplayElement will be rendered to

Specified by:

getGeometry in interface GeometryDisplayElement

setSymbolizer

public void setSymbolizer(Symbolizer symbolizer)

sets the rules that determines how the geometry will be rendered

Specified by:

setSymbolizer in interface GeometryDisplayElement

Parameters:

symbolizer - symbolizer defining rendering style

getSymbolizer

public Symbolizer getSymbolizer()

Returns the symbolizer that determines how the geometry will be rendered.

Specified by:

getSymbolizer in interface GeometryDisplayElement

setHighlightSymbolizer

public void setHighlightSymbolizer(Symbolizer rule)

sets the rule that determines how the geometry will be rendered when it's highlighted

Specified by:

setHighlightSymbolizer in interface GeometryDisplayElement

Parameters:

rule - symbolizer defining rendering style

getHighlightSymbolizer

public Symbolizer getHighlightSymbolizer()

returns the symbolizer that determines how the geometry will be rendered if it's highlighted

Specified by:

getHighlightSymbolizer in interface GeometryDisplayElement

setSelectedSymbolizer

public void setSelectedSymbolizer(Symbolizer rule)

sets the rule that determines how the geometry will be rendered when it's selected

Specified by:

setSelectedSymbolizer in interface GeometryDisplayElement

Parameters:

rule - symbolizer defining rendering style

getSelectedSymbolizer

public Symbolizer getSelectedSymbolizer()

returns the symbolizer that determines how the geometry will be rendered if it's selected

Specified by:

getSelectedSymbolizer in interface GeometryDisplayElement

getFeature

public Feature getFeature()

Returns the associated Feature.

Specified by:

getFeature in interface DisplayElement

getAssociateFeatureId

public java.lang.String getAssociateFeatureId()

returns the id of the feature that's associated with the DisplayElement

Specified by:

getAssociateFeatureId in interface DisplayElement

setSelected

public void setSelected(boolean selected)

marks a DisplayElement as selected or not

Specified by:

setSelected in interface DisplayElement

isSelected

public boolean isSelected()

returns if the DisplayElement is selected or not

Specified by:

isSelected in interface DisplayElement

setHighlighted

public void setHighlighted(boolean highlighted)

marks the DisplayElement as highlighted or not

Specified by:

setHighlighted in interface DisplayElement

isHighlighted

public boolean isHighlighted()

returns if the DisplayElement is highlighted or not.

Specified by:

isHighlighted in interface DisplayElement