org.apache.batik.gvt
Class CompositeGraphicsNode

java.lang.Object
  org.apache.batik.gvt.AbstractGraphicsNode
      org.apache.batik.gvt.CompositeGraphicsNode

All Implemented Interfaces:

Iterable, Collection, List, GraphicsNode

Direct Known Subclasses:

CanvasGraphicsNode, ImageNode, RootGraphicsNode

public class CompositeGraphicsNode
extends AbstractGraphicsNode
implements List

A CompositeGraphicsNode is a graphics node that can contain graphics nodes.
Note: this class is a 'little bit aware of' other threads, but not really threadsafe.

Version:

$Id: CompositeGraphicsNode.java 1733416 2016-03-03 07:07:13Z gadams $

Author:

Thierry Kormann

Field Summary

protected Rectangle2D	backgroundEnableRgn This flag indicates if this node has BackgroundEnable = 'new'.
protected GraphicsNode[]	children The children of this composite graphics node.
protected int	count The number of children of this composite graphics node.
protected int	modCount The number of times the children list has been structurally modified.
static Rectangle2D	NULL_RECT
static Rectangle2D	VIEWPORT

Fields inherited from class org.apache.batik.gvt.AbstractGraphicsNode

changeCompletedEvent, changeStartedEvent, clip, composite, enableBackgroundGraphicsNodeRable, filter, graphicsNodeRable, hints, inverseTransform, isVisible, listeners, mask, parent, pointerEventType, root, transform, weakRef

Fields inherited from interface org.apache.batik.gvt.GraphicsNode

ALL, FILL, IDENTITY, NONE, PAINTED, STROKE, VISIBLE, VISIBLE_FILL, VISIBLE_PAINTED, VISIBLE_STROKE

Constructor Summary

CompositeGraphicsNode()
Constructs a new empty CompositeGraphicsNode.

Method Summary

void	add(int index, Object o) Inserts the specified graphics node at the specified position in this children list.
boolean	add(Object o) Adds the specified graphics node to this composite graphics node.
boolean	addAll(Collection c) Not supported - Throws UnsupportedOperationException exception.
boolean	addAll(int index, Collection c) Not supported - Throws UnsupportedOperationException exception.
void	clear() Not supported - Throws UnsupportedOperationException exception.
boolean	contains(Object node) Returns true if this composite graphics node contains the specified graphics node, false otherwise.
boolean	contains(Point2D p) Returns true if the specified Point2D is inside the boundary of this node, false otherwise.
boolean	containsAll(Collection c) Returns true if this composite graphics node contains all the graphics node in the specified collection, false otherwise.
void	ensureCapacity(int minCapacity) Increases the capacity of the children list, if necessary, to ensure that it can hold at least the number of graphics nodes specified by the minimum capacity argument.
Object	get(int index) Returns the graphics node at the specified position in the children list.
Rectangle2D	getBackgroundEnable() Returns the region defining the background enable property.
List	getChildren() Returns the list of children.
Rectangle2D	getGeometryBounds() Returns the bounds of the area covered by this node, without taking any of its rendering attributes into account.
Shape	getOutline() Returns the outline of this node.
Rectangle2D	getPrimitiveBounds() Returns the bounds of the area covered by this node's primitive paint.
Rectangle2D	getSensitiveBounds() Returns the bounds of the sensitive area covered by this node, This includes the stroked area but does not include the effects of clipping, masking or filtering.
static Rectangle2D	getTransformedBBox(Rectangle2D r2d, AffineTransform t) Transforms a Rectangle 2D by an affine transform.
Rectangle2D	getTransformedGeometryBounds(AffineTransform txf) Returns the bounds of the area covered by this node, without taking any of its rendering attribute into accoun.
Rectangle2D	getTransformedPrimitiveBounds(AffineTransform txf) Returns the bounds of this node's primitivePaint after applying the input transform (if any), concatenated with this node's transform (if any).
Rectangle2D	getTransformedSensitiveBounds(AffineTransform txf) Returns the bounds of the sensitive area covered by this node, This includes the stroked area but does not include the effects of clipping, masking or filtering.
int	indexOf(Object node) Returns the index in the children list of the specified graphics node or -1 if the children list does not contain this graphics node.
protected void	invalidateGeometryCache() Invalidates the cached geometric bounds.
boolean	isEmpty() Returns true if this composite graphics node does not contain graphics node, false otherwise.
Iterator	iterator() Returns an iterator over the children of this graphics node.
int	lastIndexOf(Object node) Returns the index in this children list of the last occurence of the specified graphics node, or -1 if the list does not contain this graphics node.
ListIterator	listIterator() Returns an iterator over the children of this graphics node.
ListIterator	listIterator(int index) Returns an iterator over the children of this graphics node, starting at the specified position in the children list.
GraphicsNode	nodeHitAt(Point2D p) Returns the GraphicsNode containing point p if this node or one of its children is sensitive to mouse events at p.
void	primitivePaint(Graphics2D g2d) Paints this node without applying Filter, Mask, Composite, and clip.
Object	remove(int index) Removes the graphics node at the specified position in the children list.
boolean	remove(Object o) Removes the first instance of the specified graphics node from the children list.
boolean	removeAll(Collection c) Not supported - Throws UnsupportedOperationException exception.
boolean	retainAll(Collection c) Not supported - Throws UnsupportedOperationException exception.
Object	set(int index, Object o) Replaces the graphics node at the specified position in the children list with the specified graphics node.
void	setBackgroundEnable(Rectangle2D bgRgn) Sets the enable background property to the specified rectangle.
protected void	setRoot(RootGraphicsNode newRoot) Sets the root node of this grahics node and modify all its children.
void	setVisible(boolean isVisible) Sets if this node is visible or not depending on the specified value.
int	size() Returns the number of children of this composite graphics node.
List	subList(int fromIndex, int toIndex) Not supported - Throws UnsupportedOperationException exception.
Object[]	toArray() Returns an array containing all of the graphics node in the children list of this composite graphics node in the correct order.
Object[]	toArray(Object[] a) Returns an array containing all of the graphics node in the children list of this composite graphics node in the correct order.

Methods inherited from class org.apache.batik.gvt.AbstractGraphicsNode

fireGraphicsNodeChangeCompleted, fireGraphicsNodeChangeStarted, fireGraphicsNodeChangeStarted, fireGraphicsNodeChangeStarted, getBounds, getClip, getComposite, getEnableBackgroundGraphicsNodeRable, getFilter, getGlobalTransform, getGraphicsNodeRable, getInverseTransform, getMask, getParent, getPointerEventType, getRenderingHints, getRoot, getTransform, getTransformedBounds, getWeakReference, intersects, isAntialiasedClip, isOffscreenBufferNeeded, isVisible, normalizeRectangle, paint, setClip, setComposite, setFilter, setMask, setParent, setPointerEventType, setRenderingHint, setRenderingHints, setRenderingHints, setTransform

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.List

equals, hashCode

Field Detail

VIEWPORT

public static final Rectangle2D VIEWPORT

NULL_RECT

public static final Rectangle2D NULL_RECT

children

protected GraphicsNode[] children

The children of this composite graphics node.

count

protected volatile int count

The number of children of this composite graphics node.

modCount

protected volatile int modCount

The number of times the children list has been structurally modified.

backgroundEnableRgn

protected Rectangle2D backgroundEnableRgn

This flag indicates if this node has BackgroundEnable = 'new'. If so traversal of the gvt tree can halt here.

Constructor Detail

CompositeGraphicsNode

public CompositeGraphicsNode()

Constructs a new empty CompositeGraphicsNode.

Method Detail

getChildren

public List getChildren()

Returns the list of children.

setBackgroundEnable

public void setBackgroundEnable(Rectangle2D bgRgn)

Sets the enable background property to the specified rectangle.

Parameters:

bgRgn - the region that defines the background enable property

getBackgroundEnable

public Rectangle2D getBackgroundEnable()

Returns the region defining the background enable property.

setVisible

public void setVisible(boolean isVisible)

Sets if this node is visible or not depending on the specified value. Don't fire a graphicsNodeChange event because this doesn't really effect us (it effects our children through CSS inheritence).

Specified by:

setVisible in interface GraphicsNode

Overrides:

setVisible in class AbstractGraphicsNode

Parameters:

isVisible - If true this node is visible

primitivePaint

public void primitivePaint(Graphics2D g2d)

Paints this node without applying Filter, Mask, Composite, and clip.

Specified by:

primitivePaint in interface GraphicsNode

Parameters:

g2d - the Graphics2D to use

invalidateGeometryCache

protected void invalidateGeometryCache()

Invalidates the cached geometric bounds. This method is called each time an attribute that affects the bounds of this node changed.

Overrides:

invalidateGeometryCache in class AbstractGraphicsNode

getPrimitiveBounds

public Rectangle2D getPrimitiveBounds()

Returns the bounds of the area covered by this node's primitive paint.

Specified by:

getPrimitiveBounds in interface GraphicsNode

getTransformedBBox

public static Rectangle2D getTransformedBBox(Rectangle2D r2d,
                                             AffineTransform t)

Transforms a Rectangle 2D by an affine transform. It assumes the transform is only scale/translate so there is no loss of precision over transforming the source geometry.

getTransformedPrimitiveBounds

public Rectangle2D getTransformedPrimitiveBounds(AffineTransform txf)

Returns the bounds of this node's primitivePaint after applying the input transform (if any), concatenated with this node's transform (if any).

Specified by:

getTransformedPrimitiveBounds in interface GraphicsNode

Overrides:

getTransformedPrimitiveBounds in class AbstractGraphicsNode

Parameters:

txf - the affine transform with which this node's transform should be concatenated. Should not be null.

getGeometryBounds

public Rectangle2D getGeometryBounds()

Returns the bounds of the area covered by this node, without taking any of its rendering attributes into account. That is, exclusive of any clipping, masking, filtering or stroking, for example.

Specified by:

getGeometryBounds in interface GraphicsNode

getTransformedGeometryBounds

public Rectangle2D getTransformedGeometryBounds(AffineTransform txf)

Returns the bounds of the area covered by this node, without taking any of its rendering attribute into accoun. That is, exclusive of any clipping, masking, filtering or stroking, for example. The returned value is transformed by the concatenation of the input transform and this node's transform.

Specified by:

getTransformedGeometryBounds in interface GraphicsNode

Overrides:

getTransformedGeometryBounds in class AbstractGraphicsNode

Parameters:

txf - the affine transform with which this node's transform should be concatenated. Should not be null.

getSensitiveBounds

public Rectangle2D getSensitiveBounds()

Returns the bounds of the sensitive area covered by this node, This includes the stroked area but does not include the effects of clipping, masking or filtering.

Specified by:

getSensitiveBounds in interface GraphicsNode

getTransformedSensitiveBounds

public Rectangle2D getTransformedSensitiveBounds(AffineTransform txf)

Returns the bounds of the sensitive area covered by this node, This includes the stroked area but does not include the effects of clipping, masking or filtering. The returned value is transformed by the concatenation of the input transform and this node's transform.

Specified by:

getTransformedSensitiveBounds in interface GraphicsNode

Overrides:

getTransformedSensitiveBounds in class AbstractGraphicsNode

Parameters:

txf - the affine transform with which this node's transform should be concatenated. Should not be null.

contains

public boolean contains(Point2D p)

Returns true if the specified Point2D is inside the boundary of this node, false otherwise.

Specified by:

contains in interface GraphicsNode

Overrides:

contains in class AbstractGraphicsNode

Parameters:

p - the specified Point2D in the user space

nodeHitAt

public GraphicsNode nodeHitAt(Point2D p)

Returns the GraphicsNode containing point p if this node or one of its children is sensitive to mouse events at p.

Specified by:

nodeHitAt in interface GraphicsNode

Overrides:

nodeHitAt in class AbstractGraphicsNode

Parameters:

p - the specified Point2D in the user space

getOutline

public Shape getOutline()

Returns the outline of this node.

Specified by:

getOutline in interface GraphicsNode

setRoot

protected void setRoot(RootGraphicsNode newRoot)

Sets the root node of this grahics node and modify all its children.

Overrides:

setRoot in class AbstractGraphicsNode

Parameters:

newRoot - the new root node of this node

size

public int size()

Returns the number of children of this composite graphics node.

Specified by:

size in interface Collection

Specified by:

size in interface List

isEmpty

public boolean isEmpty()

Returns true if this composite graphics node does not contain graphics node, false otherwise.

Specified by:

isEmpty in interface Collection

Specified by:

isEmpty in interface List

contains

public boolean contains(Object node)

Returns true if this composite graphics node contains the specified graphics node, false otherwise.

Specified by:

contains in interface Collection

Specified by:

contains in interface List

Parameters:

node - the node to check

iterator

public Iterator iterator()

Returns an iterator over the children of this graphics node.

Specified by:

iterator in interface Iterable

Specified by:

iterator in interface Collection

Specified by:

iterator in interface List

toArray

public Object[] toArray()

Returns an array containing all of the graphics node in the children list of this composite graphics node in the correct order.

Specified by:

toArray in interface Collection

Specified by:

toArray in interface List

toArray

public Object[] toArray(Object[] a)

Returns an array containing all of the graphics node in the children list of this composite graphics node in the correct order. If the children list fits in the specified array, it is returned therein. Otherwise, a new array is allocated.

Specified by:

toArray in interface Collection

Specified by:

toArray in interface List

Parameters:

a - the array to fit if possible

get

public Object get(int index)

Returns the graphics node at the specified position in the children list.

Specified by:

get in interface List

Parameters:

index - the index of the graphics node to return

Throws:

IndexOutOfBoundsException - if the index is out of range

set

public Object set(int index,
                  Object o)

Replaces the graphics node at the specified position in the children list with the specified graphics node.

Specified by:

set in interface List

Parameters:

index - the index of the graphics node to replace

o - the graphics node to be stored at the specified position

Returns:

the graphics node previously at the specified position

Throws:

IndexOutOfBoundsException - if the index is out of range

IllegalArgumentException - if the node is not an instance of GraphicsNode

add

public boolean add(Object o)

Adds the specified graphics node to this composite graphics node.

Specified by:

add in interface Collection

Specified by:

add in interface List

Parameters:

o - the graphics node to add

Returns:

true (as per the general contract of Collection.add)

Throws:

IllegalArgumentException - if the node is not an instance of GraphicsNode

add

public void add(int index,
                Object o)

Inserts the specified graphics node at the specified position in this children list. Shifts the graphics node currently at that position (if any) and any subsequent graphics nodes to the right (adds one to their indices).

Specified by:

add in interface List

Parameters:

index - the position at which the specified graphics node is to be inserted.

o - the graphics node to be inserted.

Throws:

IndexOutOfBoundsException - if the index is out of range

IllegalArgumentException - if the node is not an instance of GraphicsNode

addAll

public boolean addAll(Collection c)

Not supported - Throws UnsupportedOperationException exception.

Specified by:

addAll in interface Collection

Specified by:

addAll in interface List

addAll

public boolean addAll(int index,
                      Collection c)

Not supported - Throws UnsupportedOperationException exception.

Specified by:

addAll in interface List

remove

public boolean remove(Object o)

Removes the first instance of the specified graphics node from the children list.

Specified by:

remove in interface Collection

Specified by:

remove in interface List

Parameters:

o - the node the remove

Returns:

true if the children list contains the specified graphics node

Throws:

IllegalArgumentException - if the node is not an instance of GraphicsNode

IndexOutOfBoundsException - when o is not in children list

remove

public Object remove(int index)

Removes the graphics node at the specified position in the children list. Shifts any subsequent graphics nodes to the left (subtracts one from their indices).

Specified by:

remove in interface List

Parameters:

index - the position of the graphics node to remove

Returns:

the graphics node that was removed

Throws:

IndexOutOfBoundsException - if index out of range

removeAll

public boolean removeAll(Collection c)

Not supported - Throws UnsupportedOperationException exception.

Specified by:

removeAll in interface Collection

Specified by:

removeAll in interface List

retainAll

public boolean retainAll(Collection c)

Not supported - Throws UnsupportedOperationException exception.

Specified by:

retainAll in interface Collection

Specified by:

retainAll in interface List

clear

public void clear()

Not supported - Throws UnsupportedOperationException exception.

Specified by:

clear in interface Collection

Specified by:

clear in interface List

containsAll

public boolean containsAll(Collection c)

Returns true if this composite graphics node contains all the graphics node in the specified collection, false otherwise.

Specified by:

containsAll in interface Collection

Specified by:

containsAll in interface List

Parameters:

c - the collection to be checked for containment

indexOf

public int indexOf(Object node)

Returns the index in the children list of the specified graphics node or -1 if the children list does not contain this graphics node.

Specified by:

indexOf in interface List

Parameters:

node - the graphics node to search for

lastIndexOf

public int lastIndexOf(Object node)

Returns the index in this children list of the last occurence of the specified graphics node, or -1 if the list does not contain this graphics node.

Specified by:

lastIndexOf in interface List

Parameters:

node - the graphics node to search for

listIterator

public ListIterator listIterator()

Returns an iterator over the children of this graphics node.

Specified by:

listIterator in interface List

listIterator

public ListIterator listIterator(int index)

Returns an iterator over the children of this graphics node, starting at the specified position in the children list.

Specified by:

listIterator in interface List

Parameters:

index - the index of the first graphics node to return from the children list

subList

public List subList(int fromIndex,
                    int toIndex)

Not supported - Throws UnsupportedOperationException exception.

Specified by:

subList in interface List

ensureCapacity

public void ensureCapacity(int minCapacity)

Increases the capacity of the children list, if necessary, to ensure that it can hold at least the number of graphics nodes specified by the minimum capacity argument.

Parameters:

minCapacity - the desired minimum capacity.