edu.umd.cs.piccolo.examples
Class DecoratorGroup

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

All Implemented Interfaces:

Printable, Serializable, Cloneable

 class DecoratorGroup
extends PNode

This is the non-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

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

DecoratorGroup()

Method Summary

PBounds	computeFullBounds(PBounds dstBounds) Change the full bounds computation to take into account that we are expanding the children's bounds Do this instead of overriding getBoundsReference() since the node is not volatile
void	paint(PPaintContext ppc) Change the default paint to fill an expanded bounding box based on its children's bounds
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, endResizeBounds, findIntersectingNodes, fireChildPropertyChange, firePropertyChange, fullIntersects, fullPaint, fullPick, getAllNodes, getAllNodes, getAttribute, getAttribute, getBooleanAttribute, getBounds, getBoundsChanged, getBoundsReference, getBoundsVolatile, 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, 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

Constructor Detail

DecoratorGroup

public DecoratorGroup()

Method Detail

paint

public void paint(PPaintContext ppc)

Change the default paint to fill an expanded bounding box based on its children's bounds

Overrides:

paint in class PNode

computeFullBounds

public PBounds computeFullBounds(PBounds dstBounds)

Change the full bounds computation to take into account that we are expanding the children's bounds Do this instead of overriding getBoundsReference() since the node is not volatile

Overrides:

computeFullBounds 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