gov.nasa.worldwind.render
Class AbstractAnnotationBalloon

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

All Implemented Interfaces:

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

Direct Known Subclasses:

GlobeAnnotationBalloon, ScreenAnnotationBalloon

public abstract class AbstractAnnotationBalloon
extends AbstractBalloon

Implementation of balloon using Annotation.

Field Summary

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

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

Constructor Summary

AbstractAnnotationBalloon(String text)
Create a new annotation balloon.

Method Summary

protected void	applyAttributesToAnnotation() Apply the balloon attributes to the annotation.
protected void	computeOffsets(DrawContext dc) Compute the position and offsets, and set in them in the annotation.
protected abstract void	computePosition(DrawContext dc) Compute the annotation position, and set it in the annotation.
protected abstract Annotation	createAnnotation() Create an annotation to render the balloon.
protected abstract Annotation	getAnnotation() Get the annotation used to render the balloon.
Rectangle	getBounds(DrawContext dc) Get the balloon bounding Rectangle using OGL coordinates - bottom-left corner x and y relative to the WorldWindow bottom-left corner, and the balloon callout width and height.
void	render(DrawContext dc) Causes this Renderable to render itself using the provided draw context.

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.avlist.AVList

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

Constructor Detail

AbstractAnnotationBalloon

public AbstractAnnotationBalloon(String text)

Create a new annotation balloon.

Parameters:

text - Balloon text. May not be null.

Method Detail

applyAttributesToAnnotation

protected void applyAttributesToAnnotation()

Apply the balloon attributes to the annotation.

computeOffsets

protected void computeOffsets(DrawContext dc)

Compute the position and offsets, and set in them in the annotation.

Parameters:

dc - DrawContext in which the balloon is being rendered.

computePosition

protected abstract void computePosition(DrawContext dc)

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

Parameters:

dc - Draw context.

createAnnotation

protected abstract Annotation createAnnotation()

Create an annotation to render the balloon.

Returns:

The new annotation.

getAnnotation

protected abstract Annotation getAnnotation()

Get the annotation used to render the balloon.

Returns:

The annotation that renders this balloon.

getBounds

public Rectangle getBounds(DrawContext dc)

Get the balloon bounding Rectangle using OGL coordinates - bottom-left corner x and y relative to the WorldWindow bottom-left corner, and the balloon callout width and height.

The balloon offset from it's reference point is factored in such that the callout leader shape and reference point are included in the bounding rectangle.

Parameters:

dc - the current DrawContext.

Returns:

the balloon bounding Rectangle using OGL viewport coordinates.

render

public void render(DrawContext dc)

Causes this Renderable to render itself using the provided draw context.

Parameters:

dc - the DrawContext to be used

See Also:

DrawContext