edu.umd.cs.piccolo.examples
Class VolatileDecoratorGroup

java.lang.Object
  edu.umd.cs.piccolo.PNode
      edu.umd.cs.piccolo.examples.VolatileDecoratorGroup

All Implemented Interfaces:

Printable, Serializable, Cloneable

 class VolatileDecoratorGroup
extends PNode

This is the volatile implementation of a decorator group that paints a background rectangle based on the bounds of its children.

Nested Class Summary

Nested classes/interfaces inherited from class edu.umd.cs.piccolo.PNode

PNode.PSceneGraphDelegate

Field Summary

(package private) PBounds	cachedChildBounds
(package private) PBounds	comparisonBounds
(package private) int	INDENT
(package private) PCamera	renderCamera

Fields inherited from class edu.umd.cs.piccolo.PNode

FILL_STRATEGY_ASPECT_COVER, FILL_STRATEGY_ASPECT_FIT, FILL_STRATEGY_EXACT_FIT, PROPERTY_BOUNDS, PROPERTY_CHILDREN, PROPERTY_CHILDREN_PICKABLE, PROPERTY_CLIENT_PROPERTIES, PROPERTY_CODE_BOUNDS, PROPERTY_CODE_CHILDREN, PROPERTY_CODE_CHILDREN_PICKABLE, PROPERTY_CODE_CLIENT_PROPERTIES, PROPERTY_CODE_FULL_BOUNDS, PROPERTY_CODE_PAINT, PROPERTY_CODE_PARENT, PROPERTY_CODE_PICKABLE, PROPERTY_CODE_TRANSFORM, PROPERTY_CODE_TRANSPARENCY, PROPERTY_CODE_VISIBLE, PROPERTY_FULL_BOUNDS, PROPERTY_PAINT, PROPERTY_PARENT, PROPERTY_PICKABLE, PROPERTY_TRANSFORM, PROPERTY_TRANSPARENCY, PROPERTY_VISIBLE, SCENE_GRAPH_DELEGATE

Fields inherited from interface java.awt.print.Printable

NO_SUCH_PAGE, PAGE_EXISTS

Constructor Summary

VolatileDecoratorGroup(PCamera camera)

Method Summary

PBounds	getBoundsReference() Since our bounds are volatile, we can override this method to indicate that we are expanding our bounds beyond our children
boolean	getBoundsVolatile() Indicate that the bounds are volatile for this group
boolean	validateFullBounds() This is a crucial step.

Methods inherited from class edu.umd.cs.piccolo.PNode

addActivity, addAttribute, addChild, addChild, addChildren, addClientProperty, addInputEventListener, addPropertyChangeListener, addPropertyChangeListener, animateToBounds, animateToColor, animateToPositionScaleRotation, animateToRelativePosition, animateToTransform, animateToTransparency, animateTransformToBounds, centerBoundsOnPoint, centerFullBoundsOnPoint, clone, computeFullBounds, endResizeBounds, findIntersectingNodes, fireChildPropertyChange, firePropertyChange, fullIntersects, fullPaint, fullPick, getAllNodes, getAllNodes, getAttribute, getAttribute, getBooleanAttribute, getBounds, getBoundsChanged, getChild, getChildBoundsInvalid, getChildBoundsVolatile, getChildPaintInvalid, getChildrenCount, getChildrenIterator, getChildrenPickable, getChildrenReference, getClientProperties, getClientProperty, getClientPropertyKeysEnumeration, getClientPropertyKeysIterator, getDoubleAttribute, getFullBounds, getFullBoundsInvalid, getFullBoundsReference, getGlobalBounds, getGlobalFullBounds, getGlobalRotation, getGlobalScale, getGlobalToLocalTransform, getGlobalTranslation, getHeight, getInputEventListeners, getIntegerAttribute, getInverseTransform, getListenerList, getLocalToGlobalTransform, getName, getOccluded, getOffset, getPaint, getPaintInvalid, getParent, getPickable, getPropertyChangeParentMask, getRoot, getRotation, getScale, getTransform, getTransformReference, getTransparency, getUnionOfChildrenBounds, getVisible, getWidth, getX, getXOffset, getY, getYOffset, globalToLocal, globalToLocal, globalToLocal, indexOfChild, internalUpdateBounds, intersects, invalidateFullBounds, invalidateLayout, invalidatePaint, isAncestorOf, isDescendentOf, isDescendentOfRoot, isOpaque, layoutChildren, lerp, localToGlobal, localToGlobal, localToGlobal, localToParent, localToParent, localToParent, moveInBackOf, moveInFrontOf, moveToBack, moveToFront, offset, paint, paintAfterChildren, paramString, parentBoundsChanged, parentToLocal, parentToLocal, parentToLocal, pick, pickAfterChildren, position, print, print, removeAllChildren, removeChild, removeChild, removeChildren, removeFromParent, removeInputEventListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaintFrom, reparent, replaceWith, resetBounds, rotate, rotateAboutPoint, rotateAboutPoint, rotateInPlace, scale, scaleAboutPoint, scaleAboutPoint, setBounds, setBounds, setBoundsChanged, setChildBoundsInvalid, setChildBoundsVolatile, setChildPaintInvalid, setChildrenPickable, setFullBoundsInvalid, setGlobalRotation, setGlobalScale, setGlobalTranslation, setHeight, setName, setOccluded, setOffset, setOffset, setPaint, setPaintInvalid, setParent, setPickable, setPropertyChangeParentMask, setRotation, setScale, setTransform, setTransparency, setVisible, setWidth, setX, setY, signalBoundsChanged, startResizeBounds, toImage, toImage, toImage, toImage, transformBy, translate, validateFullPaint

Methods inherited from class java.lang.Object

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

Field Detail

INDENT

int INDENT

cachedChildBounds

PBounds cachedChildBounds

comparisonBounds

PBounds comparisonBounds

renderCamera

PCamera renderCamera

Constructor Detail

VolatileDecoratorGroup

public VolatileDecoratorGroup(PCamera camera)

Method Detail

getBoundsVolatile

public boolean getBoundsVolatile()

Indicate that the bounds are volatile for this group

Overrides:

getBoundsVolatile in class PNode

getBoundsReference

public PBounds getBoundsReference()

Since our bounds are volatile, we can override this method to indicate that we are expanding our bounds beyond our children

Overrides:

getBoundsReference in class PNode

validateFullBounds

public boolean validateFullBounds()

This is a crucial step. We have to override this method to invalidate the paint each time the bounds are changed so we repaint the correct region

Overrides:

validateFullBounds in class PNode