edu.umd.cs.piccolox.handles
Class PHandle

java.lang.Object
  edu.umd.cs.piccolo.PNode
      edu.umd.cs.piccolo.nodes.PPath
          edu.umd.cs.piccolox.handles.PHandle

All Implemented Interfaces:

Printable, Serializable, Cloneable

Direct Known Subclasses:

PBoundsHandle

public class PHandle
extends PPath

PHandle is used to modify some aspect of Piccolo when it is dragged. Each handle has a PLocator that it uses to automatically position itself. See PBoundsHandle for an example of a handle that resizes the bounds of another node.

Version:

1.0

Author:

Jesse Grosjean

See Also:

Serialized Form

Nested Class Summary

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

PNode.PSceneGraphDelegate

Field Summary

static Color	DEFAULT_COLOR Default color to paint handles.
static Shape	DEFAULT_HANDLE_SHAPE Default shape to use when drawing handles.
static float	DEFAULT_HANDLE_SIZE The default size for a handle.

Fields inherited from class edu.umd.cs.piccolo.nodes.PPath

PROPERTY_CODE_PATH, PROPERTY_CODE_STROKE, PROPERTY_CODE_STROKE_PAINT, PROPERTY_PATH, PROPERTY_STROKE, PROPERTY_STROKE_PAINT

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

PHandle(PLocator aLocator)
Construct a new handle that will use the given locator to locate itself on its parent node.

Method Summary

void	dragHandle(PDimension aLocalDimension, PInputEvent aEvent) Override this method to get notified as the handle is dragged.
void	endHandleDrag(Point2D aLocalPoint, PInputEvent aEvent) Override this method to get notified when the handle stops getting dragged.
PDragSequenceEventHandler	getHandleDraggerHandler() Return the event handler that is responsible for the drag handle interaction.
PLocator	getLocator() Get the locator that this handle uses to position itself on its parent node.
protected void	installHandleEventHandlers() Installs the handler that notify its subclasses of handle interaction.
void	parentBoundsChanged() Forces the handles to reposition themselves using their associated locator.
void	relocateHandle() Force this handle to relocate itself using its locator.
void	setLocator(PLocator locator) Set the locator that this handle uses to position itself on its parent node.
void	setParent(PNode newParent) Set's this handle's parent.
void	startHandleDrag(Point2D aLocalPoint, PInputEvent aEvent) Override this method to get notified when the handle starts to get dragged.

Methods inherited from class edu.umd.cs.piccolo.nodes.PPath

append, closePath, createEllipse, createLine, createPolyline, createPolyline, createRectangle, createRoundRectangle, curveTo, endResizeBounds, getPathBoundsWithStroke, getPathReference, getStroke, getStrokePaint, internalUpdateBounds, intersects, lineTo, moveTo, paint, quadTo, reset, setPathTo, setPathToEllipse, setPathToPolyline, setPathToPolyline, setPathToRectangle, setStroke, setStrokePaint, startResizeBounds, updateBoundsFromPath

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, 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, invalidateFullBounds, invalidateLayout, invalidatePaint, isAncestorOf, isDescendentOf, isDescendentOfRoot, isOpaque, layoutChildren, lerp, localToGlobal, localToGlobal, localToGlobal, localToParent, localToParent, localToParent, moveInBackOf, moveInFrontOf, moveToBack, moveToFront, offset, paintAfterChildren, paramString, 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, setPickable, setPropertyChangeParentMask, setRotation, setScale, setTransform, setTransparency, setVisible, setWidth, setX, setY, signalBoundsChanged, toImage, toImage, toImage, toImage, transformBy, translate, validateFullBounds, validateFullPaint

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_HANDLE_SIZE

public static float DEFAULT_HANDLE_SIZE

The default size for a handle.

DEFAULT_HANDLE_SHAPE

public static Shape DEFAULT_HANDLE_SHAPE

Default shape to use when drawing handles.

DEFAULT_COLOR

public static Color DEFAULT_COLOR

Default color to paint handles.

Constructor Detail

PHandle

public PHandle(PLocator aLocator)

Construct a new handle that will use the given locator to locate itself on its parent node.

Parameters:

aLocator - locator to use when laying out the handle

Method Detail

installHandleEventHandlers

protected void installHandleEventHandlers()

Installs the handler that notify its subclasses of handle interaction.

getHandleDraggerHandler

public PDragSequenceEventHandler getHandleDraggerHandler()

Return the event handler that is responsible for the drag handle interaction.

Returns:

current handler for HandleDrag events

getLocator

public PLocator getLocator()

Get the locator that this handle uses to position itself on its parent node.

Returns:

the locator associated with this handle

setLocator

public void setLocator(PLocator locator)

Set the locator that this handle uses to position itself on its parent node.

Parameters:

locator - the locator to assign to this handle

startHandleDrag

public void startHandleDrag(Point2D aLocalPoint,
                            PInputEvent aEvent)

Override this method to get notified when the handle starts to get dragged.

Parameters:

aLocalPoint - point on the handle at which the event occurred

aEvent - the event responsible for starting the dragging

dragHandle

public void dragHandle(PDimension aLocalDimension,
                       PInputEvent aEvent)

Override this method to get notified as the handle is dragged.

Parameters:

aLocalDimension - size of the drag in handle coordinates

aEvent - event representing the drag

endHandleDrag

public void endHandleDrag(Point2D aLocalPoint,
                          PInputEvent aEvent)

Override this method to get notified when the handle stops getting dragged.

Parameters:

aLocalPoint - point in handle coordinate system of the end of the drag

aEvent - event responsible for ending the drag

setParent

public void setParent(PNode newParent)

Set's this handle's parent. Handles respond to changes in their parent's bounds by invalidating themselves.

Overrides:

setParent in class PNode

Parameters:

newParent - the new parent to assign to this handle

parentBoundsChanged

public void parentBoundsChanged()

Forces the handles to reposition themselves using their associated locator.

Overrides:

parentBoundsChanged in class PNode

relocateHandle

public void relocateHandle()

Force this handle to relocate itself using its locator.