gov.nasa.worldwind.render
Class ScreenAnnotationBalloon

java.lang.Object
  gov.nasa.worldwind.avlist.AVListImpl
      gov.nasa.worldwind.WWObjectImpl
          gov.nasa.worldwind.render.AbstractBalloon
              gov.nasa.worldwind.render.AbstractAnnotationBalloon
                  gov.nasa.worldwind.render.ScreenAnnotationBalloon

All Implemented Interfaces:

AVList, MessageListener, Balloon, Highlightable, Renderable, ScreenBalloon, WWObject, PropertyChangeListener, EventListener

public class ScreenAnnotationBalloon
extends AbstractAnnotationBalloon
implements ScreenBalloon

An AnnotationBalloon that is attached to a point on the screen.

Field Summary

protected ScreenAnnotation	annotation Annotation used to render the balloon.
protected Point	screenPoint

Fields inherited from class gov.nasa.worldwind.render.AbstractBalloon

activeAttributes, alwaysOnTop, attributes, defaultAttributes, delegateOwner, highlightAttributes, highlighted, maxActiveAltitude, minActiveAltitude, pickEnabled, text, textDecoder, visible

Constructor Summary

ScreenAnnotationBalloon(String text, Point point)
Create the balloon.

Method Summary

protected void	computePosition(DrawContext dc) Compute the annotation position, and set it in the annotation.
protected ScreenAnnotation	createAnnotation() Create an annotation to render the balloon.
protected ScreenAnnotation	getAnnotation() Get the annotation used to render the balloon.
Point	getScreenLocation() Get the position of the balloon on the screen.
void	setScreenLocation(Point point) Set the screen position of the balloon.

Methods inherited from class gov.nasa.worldwind.render.AbstractAnnotationBalloon

applyAttributesToAnnotation, computeOffsets, getBounds, render

Methods inherited from class gov.nasa.worldwind.render.AbstractBalloon

determineActiveAttributes, getActiveAttributes, getAttributes, getDecodedText, getDelegateOwner, getHighlightAttributes, getMaxActiveAltitude, getMinActiveAltitude, getText, getTextDecoder, isAlwaysOnTop, isHighlighted, isPickEnabled, isVisible, setAlwaysOnTop, setAttributes, setDelegateOwner, setHighlightAttributes, setHighlighted, setMaxActiveAltitude, setMinActiveAltitude, setPickEnabled, setText, setTextDecoder, setVisible

Methods inherited from class gov.nasa.worldwind.WWObjectImpl

onMessage, propertyChange

Methods inherited from class gov.nasa.worldwind.avlist.AVListImpl

addPropertyChangeListener, addPropertyChangeListener, clearList, copy, firePropertyChange, firePropertyChange, getBooleanValue, getBooleanValue, getChangeSupport, getDoubleValue, getDoubleValue, getEntries, getIntegerValue, getIntegerValue, getLongValue, getLongValue, getRestorableStateForAVPair, getStringValue, getStringValue, getStringValue, getValue, getValues, hasKey, removeKey, removePropertyChangeListener, removePropertyChangeListener, setValue, setValues

Methods inherited from class java.lang.Object

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

Methods inherited from interface gov.nasa.worldwind.render.Balloon

getAttributes, getBounds, getDelegateOwner, getHighlightAttributes, getMaxActiveAltitude, getMinActiveAltitude, getText, getTextDecoder, isAlwaysOnTop, isPickEnabled, isVisible, setAlwaysOnTop, setAttributes, setDelegateOwner, setHighlightAttributes, setMaxActiveAltitude, setMinActiveAltitude, setPickEnabled, setText, setTextDecoder, setVisible

Methods inherited from interface gov.nasa.worldwind.render.Renderable

render

Methods inherited from interface gov.nasa.worldwind.render.Highlightable

isHighlighted, setHighlighted

Methods inherited from interface gov.nasa.worldwind.avlist.AVList

addPropertyChangeListener, addPropertyChangeListener, clearList, copy, firePropertyChange, firePropertyChange, getEntries, getStringValue, getValue, getValues, hasKey, removeKey, removePropertyChangeListener, removePropertyChangeListener, setValue, setValues

Field Detail

annotation

protected ScreenAnnotation annotation

Annotation used to render the balloon.

screenPoint

protected Point screenPoint

Constructor Detail

ScreenAnnotationBalloon

public ScreenAnnotationBalloon(String text,
                               Point point)

Create the balloon.

Parameters:

text - Text to display in the balloon. May not be null.

point - The balloon's screen point. This point is interpreted in a coordinate system with the origin at the upper left corner of the screen.

Method Detail

computePosition

protected void computePosition(DrawContext dc)

Compute the annotation position, and set it in the annotation.

Specified by:

computePosition in class AbstractAnnotationBalloon

Parameters:

dc - Draw context.

createAnnotation

protected ScreenAnnotation createAnnotation()

Create an annotation to render the balloon.

Specified by:

createAnnotation in class AbstractAnnotationBalloon

Returns:

The new annotation.

getAnnotation

protected ScreenAnnotation getAnnotation()

Get the annotation used to render the balloon.

Specified by:

getAnnotation in class AbstractAnnotationBalloon

Returns:

The annotation that renders this balloon.

getScreenLocation

public Point getScreenLocation()

Get the position of the balloon on the screen.

Specified by:

getScreenLocation in interface ScreenBalloon

Returns:

The screen location of the balloon.

setScreenLocation

public void setScreenLocation(Point point)

Set the screen position of the balloon. This point is interpreted in a coordinate system with the origin at the upper left corner of the screen.

Specified by:

setScreenLocation in interface ScreenBalloon

Parameters:

point - Point in screen coordinates, with origin at upper left corner.