edu.umd.cs.piccolox.swt
Class PSWTPath

java.lang.Object
  extended by edu.umd.cs.piccolo.PNode
      extended by edu.umd.cs.piccolox.swt.PSWTPath
All Implemented Interfaces:
java.awt.print.Printable, java.io.Serializable, java.lang.Cloneable
Direct Known Subclasses:
PSWTHandle

public class PSWTPath
extends PNode

PPath is a wrapper around a java.awt.geom.GeneralPath. The setBounds method works by scaling the path to fit into the specified bounds. This normally works well, but if the specified base bounds get too small then it is impossible to expand the path shape again since all its numbers have tended to zero, so application code may need to take this into consideration.

One option that applications have is to call startResizeBounds before starting an interaction that may make the bounds very small, and calling endResizeBounds when this interaction is finished. When this is done PPath will use a copy of the original path to do the resizing so the numbers in the path wont loose resolution.

This class also provides methods for constructing common shapes using a general path.

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 java.lang.String PROPERTY_SHAPE
          The property name that identifies a change of this node's path.
 
Fields inherited from class edu.umd.cs.piccolo.PNode
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
PSWTPath()
           
PSWTPath(java.awt.Shape aShape)
           
 
Method Summary
 java.awt.Shape cloneShape(java.awt.Shape aShape)
           
static PSWTPath createEllipse(float x, float y, float width, float height)
           
static PSWTPath createPolyline(float[] xp, float[] yp)
           
static PSWTPath createPolyline(java.awt.geom.Point2D[] points)
           
static PSWTPath createRectangle(float x, float y, float width, float height)
           
 java.awt.Paint getStrokePaint()
           
protected  void internalUpdateBounds(double x, double y, double width, double height)
          Set the bounds of this path.
 boolean intersects(java.awt.geom.Rectangle2D aBounds)
          Return true if this node intersects the given rectangle specified in local bounds.
protected  void paint(PPaintContext paintContext)
          Paint this node behind any of its children nodes.
protected  java.lang.String paramString()
          Returns a string representing the state of this node.
 void setPathToEllipse(float x, float y, float width, float height)
           
 void setPathToPolyline(float[] xp, float[] yp)
           
 void setPathToPolyline(java.awt.geom.Point2D[] points)
           
 void setPathToRectangle(float x, float y, float width, float height)
           
 void setShape(java.awt.Shape aShape)
           
 void setStrokeColor(java.awt.Paint aPaint)
           
 void updateBoundsFromPath()
           
 void updateShapePoints(java.awt.Shape aShape)
           
 
Methods inherited from class edu.umd.cs.piccolo.PNode
addActivity, addAttribute, addChild, addChild, addChildren, addClientProperty, addInputEventListener, addPropertyChangeListener, addPropertyChangeListener, animateToBounds, animateToColor, animateToPositionScaleRotation, animateToTransform, animateToTransparency, animateTransformToBounds, centerBoundsOnPoint, centerFullBoundsOnPoint, clone, computeFullBounds, 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, getIntegerAttribute, getInverseTransform, getListenerList, getLocalToGlobalTransform, 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, 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, setOccluded, setOffset, setOffset, setPaint, setPaintInvalid, setParent, setPickable, setPropertyChangeParentMask, setRotation, setScale, setTransform, setTransparency, setVisible, setWidth, setX, setY, signalBoundsChanged, startResizeBounds, toImage, toImage, toImage, toString, transformBy, translate, validateFullBounds, validateFullPaint
 
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

PROPERTY_SHAPE

public static final java.lang.String PROPERTY_SHAPE
The property name that identifies a change of this node's path. In any property change event the new value will be a reference to this node's path, but old value will always be null.

See Also:
Constant Field Values
Constructor Detail

PSWTPath

public PSWTPath()

PSWTPath

public PSWTPath(java.awt.Shape aShape)
Method Detail

createRectangle

public static PSWTPath createRectangle(float x,
                                       float y,
                                       float width,
                                       float height)

createEllipse

public static PSWTPath createEllipse(float x,
                                     float y,
                                     float width,
                                     float height)

createPolyline

public static PSWTPath createPolyline(java.awt.geom.Point2D[] points)

createPolyline

public static PSWTPath createPolyline(float[] xp,
                                      float[] yp)

getStrokePaint

public java.awt.Paint getStrokePaint()

setStrokeColor

public void setStrokeColor(java.awt.Paint aPaint)

internalUpdateBounds

protected void internalUpdateBounds(double x,
                                    double y,
                                    double width,
                                    double height)
Set the bounds of this path. This method works by scaling the path to fit into the specified bounds. This normally works well, but if the specified base bounds get too small then it is impossible to expand the path shape again since all its numbers have tended to zero, so application code may need to take this into consideration.

Overrides:
internalUpdateBounds in class PNode

intersects

public boolean intersects(java.awt.geom.Rectangle2D aBounds)
Description copied from class: PNode
Return true if this node intersects the given rectangle specified in local bounds. If the geometry of this node is complex this method can become expensive, it is therefore recommended that fullIntersects is used for quick rejects before calling this method.

Overrides:
intersects in class PNode
Parameters:
aBounds - the bounds to test for intersection against
Returns:
true if the given rectangle intersects this nodes geometry.

updateBoundsFromPath

public void updateBoundsFromPath()

paint

protected void paint(PPaintContext paintContext)
Description copied from class: PNode
Paint this node behind any of its children nodes. Subclasses that define a different appearance should override this method and paint themselves there.

Overrides:
paint in class PNode
Parameters:
paintContext - the paint context to use for painting the node

setShape

public void setShape(java.awt.Shape aShape)

updateShapePoints

public void updateShapePoints(java.awt.Shape aShape)

cloneShape

public java.awt.Shape cloneShape(java.awt.Shape aShape)

setPathToRectangle

public void setPathToRectangle(float x,
                               float y,
                               float width,
                               float height)

setPathToEllipse

public void setPathToEllipse(float x,
                             float y,
                             float width,
                             float height)

setPathToPolyline

public void setPathToPolyline(java.awt.geom.Point2D[] points)

setPathToPolyline

public void setPathToPolyline(float[] xp,
                              float[] yp)

paramString

protected java.lang.String paramString()
Returns a string representing the state of this node. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be null.

Overrides:
paramString in class PNode
Returns:
a string representation of this node's state


Copyright 2005 by University of Maryland, College Park, MD 20742, USA All rights reserved.

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