net.sourceforge.jeuclid.elements
Class AbstractElementWithDelegates

java.lang.Object
  net.sourceforge.jeuclid.dom.AbstractPartialNodeImpl
      net.sourceforge.jeuclid.dom.AbstractPartialElementImpl
          net.sourceforge.jeuclid.dom.AbstractChangeTrackingElement
              net.sourceforge.jeuclid.elements.AbstractJEuclidElement
                  net.sourceforge.jeuclid.elements.presentation.AbstractContainer
                      net.sourceforge.jeuclid.elements.AbstractElementWithDelegates

All Implemented Interfaces:

ChangeTrackingInterface, DisplayableNode, JEuclidElement, JEuclidNode, Element, MathMLContainer, MathMLElement, Node

Direct Known Subclasses:

Maction, Menclose, Mfenced

public abstract class AbstractElementWithDelegates
extends AbstractContainer

Generic class for all mathobjects that can be represented using other Math objects. These math objects use a delegates for the actual display and calculations.

To use this class, overwrite createDelegates() to create the delegate objects.

Version:

$Revision: 310 $

Author:

Max Berger

Nested Class Summary

Nested classes/interfaces inherited from class net.sourceforge.jeuclid.dom.AbstractPartialElementImpl

AbstractPartialElementImpl.AttributeNodeMap, AbstractPartialElementImpl.AttrImpl

Nested classes/interfaces inherited from class net.sourceforge.jeuclid.dom.AbstractPartialNodeImpl

AbstractPartialNodeImpl.NodeList

Field Summary

Fields inherited from class net.sourceforge.jeuclid.elements.AbstractJEuclidElement

ALIGN_AXIS, ALIGN_BASELINE, ALIGN_BOTTOM, ALIGN_CENTER, ALIGN_LEFT, ALIGN_RIGHT, ALIGN_TOP, ATTR_CLASS, ATTR_DEPRECATED_BACKGROUND, ATTR_DEPRECATED_COLOR, ATTR_DEPRECATED_FONTFAMILY, ATTR_DEPRECATED_FONTSIZE, ATTR_DEPRECATED_FONTSTYLE, ATTR_DEPRECATED_FONTWEIGHT, ATTR_HREF, ATTR_ID, ATTR_MATHBACKGROUND, ATTR_MATHCOLOR, ATTR_MATHSIZE, ATTR_MATHVARIANT, ATTR_STYLE, ATTR_XREF, TRIVIAL_SPACE_MAX, URI

Fields inherited from interface org.w3c.dom.Node

ATTRIBUTE_NODE, CDATA_SECTION_NODE, COMMENT_NODE, DOCUMENT_FRAGMENT_NODE, DOCUMENT_NODE, DOCUMENT_POSITION_CONTAINED_BY, DOCUMENT_POSITION_CONTAINS, DOCUMENT_POSITION_DISCONNECTED, DOCUMENT_POSITION_FOLLOWING, DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC, DOCUMENT_POSITION_PRECEDING, DOCUMENT_TYPE_NODE, ELEMENT_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, NOTATION_NODE, PROCESSING_INSTRUCTION_NODE, TEXT_NODE

Constructor Summary

AbstractElementWithDelegates(MathBase base)
default constructor.

Method Summary

float	calculateAscentHeight(Graphics2D g) Returns the current height of the upper part (over the base line).
float	calculateDescentHeight(Graphics2D g) Calculates descent height (under the base line) of the element.
float	calculateWidth(Graphics2D g) Caculates width of the element.
protected void	changeHook() Called on any change.
protected abstract List<JEuclidElement>	createDelegates() Overwrite this function in your implementation.
void	paint(Graphics2D g, float posX, float posY) Paints this element.

Methods inherited from class net.sourceforge.jeuclid.elements.presentation.AbstractContainer

deleteArgument, deleteDeclaration, getArgument, getArguments, getDeclaration, getDeclarations, getNArguments, insertArgument, insertDeclaration, removeArgument, removeDeclaration, setArgument, setDeclaration

Methods inherited from class net.sourceforge.jeuclid.elements.AbstractJEuclidElement

addMathElement, addText, calculateHeight, debug, getAbsoluteScriptLevel, getAscentHeight, getBackgroundColor, getClassName, getContents, getDescentHeight, getFont, getFontMetrics, getFontsizeInPoint, getForegroundColor, getGlobalLineCorrector, getHeight, getHref, getId, getIndexOfMathElement, getInheritedScriptlevel, getMathAttribute, getMathbackground, getMathBase, getMathcolor, getMathElement, getMathElementCount, getMathElementStyle, getMathsize, getMathsizeInPoint, getMathvariant, getMathvariantAsVariant, getMiddleShift, getOwnerMathElement, getPaintedPosX, getPaintedPosY, getParent, getScriptlevelForChild, getScriptSizeMultiplier, getText, getWidth, getXCenter, getXref, hasChildPostscripts, hasChildPrescripts, isCalculatingSize, isChildBlock, recalculateSize, setCalculatingSize, setClassName, setDefaultMathAttribute, setFakeParent, setGlobalLineCorrector, setHref, setId, setMathAttributes, setMathbackground, setMathBase, setMathcolor, setMathElement, setMathElementStyle, setMathsize, setMathvariant, setScriptSizeMultiplier, setXref

Methods inherited from class net.sourceforge.jeuclid.dom.AbstractChangeTrackingElement

addListener, appendChild, fireChanged, fireChangeForSubTree, replaceChild, setAttribute, setTextContent

Methods inherited from class net.sourceforge.jeuclid.dom.AbstractPartialElementImpl

getAttribute, getAttributeNode, getAttributeNodeNS, getAttributeNS, getAttributes, getElementsByTagName, getElementsByTagNameNS, getLocalName, getNodeName, getNodeType, getSchemaTypeInfo, hasAttribute, hasAttributeNS, removeAttribute, removeAttributeNode, removeAttributeNS, setAttributeNode, setAttributeNodeNS, setAttributeNS, setIdAttribute, setIdAttributeNode, setIdAttributeNS, toString

Methods inherited from class net.sourceforge.jeuclid.dom.AbstractPartialNodeImpl

cloneNode, compareDocumentPosition, getBaseURI, getChildNodes, getFeature, getFirstChild, getLastChild, getNamespaceURI, getNextSibling, getNodeValue, getOwnerDocument, getParentNode, getPrefix, getPreviousSibling, getTextContent, getUserData, hasAttributes, hasChildNodes, insertBefore, isDefaultNamespace, isEqualNode, isSameNode, isSupported, lookupNamespaceURI, lookupPrefix, normalize, removeChild, setNodeValue, setPrefix, setUserData

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.w3c.dom.Element

getAttribute, getAttributeNode, getAttributeNodeNS, getAttributeNS, getElementsByTagName, getElementsByTagNameNS, getSchemaTypeInfo, getTagName, hasAttribute, hasAttributeNS, removeAttribute, removeAttributeNode, removeAttributeNS, setAttribute, setAttributeNode, setAttributeNodeNS, setAttributeNS, setIdAttribute, setIdAttributeNode, setIdAttributeNS

Methods inherited from interface org.w3c.dom.Node

appendChild, cloneNode, compareDocumentPosition, getAttributes, getBaseURI, getChildNodes, getFeature, getFirstChild, getLastChild, getLocalName, getNamespaceURI, getNextSibling, getNodeName, getNodeType, getNodeValue, getOwnerDocument, getParentNode, getPrefix, getPreviousSibling, getTextContent, getUserData, hasAttributes, hasChildNodes, insertBefore, isDefaultNamespace, isEqualNode, isSameNode, isSupported, lookupNamespaceURI, lookupPrefix, normalize, removeChild, replaceChild, setNodeValue, setPrefix, setTextContent, setUserData

Methods inherited from interface net.sourceforge.jeuclid.dom.ChangeTrackingInterface

addListener, fireChanged, fireChangeForSubTree

Constructor Detail

AbstractElementWithDelegates

public AbstractElementWithDelegates(MathBase base)

default constructor.

Parameters:

base - the MathBase to use.

Method Detail

createDelegates

protected abstract List<JEuclidElement> createDelegates()

Overwrite this function in your implementation.

Returns:

a MathObject representing the real contents.

calculateAscentHeight

public float calculateAscentHeight(Graphics2D g)

Returns the current height of the upper part (over the base line).

Specified by:

calculateAscentHeight in interface JEuclidElement

Specified by:

calculateAscentHeight in class AbstractJEuclidElement

Parameters:

g - Graphics2D context to use.

Returns:

Height of the upper part.

calculateDescentHeight

public float calculateDescentHeight(Graphics2D g)

Calculates descent height (under the base line) of the element.

Specified by:

calculateDescentHeight in interface JEuclidElement

Specified by:

calculateDescentHeight in class AbstractJEuclidElement

Parameters:

g - Graphics2D context to use.

Returns:

Descent height value.

calculateWidth

public float calculateWidth(Graphics2D g)

Caculates width of the element.

Specified by:

calculateWidth in class AbstractJEuclidElement

Parameters:

g - Graphics2D context to use.

Returns:

Width of the element.

paint

public void paint(Graphics2D g,
                  float posX,
                  float posY)

Paints this element.

Specified by:

paint in interface DisplayableNode

Overrides:

paint in class AbstractJEuclidElement

Parameters:

g - The graphics context to use for painting

posX - The first left position for painting

posY - The position of the baseline

changeHook

protected void changeHook()

Called on any change. Please override!

Overrides:

changeHook in class AbstractJEuclidElement